From cd5a9721819c7dc09e5989d837ed47c6c496b5ff Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Mon, 28 Sep 2026 23:33:12 -0700
Subject: [PATCH 1/8] Add Flash Web docs and fix bugs

---
 flash/system_prompt.txt |    2 +-
 flash/theme.py          |   14 +
 flash/tools.py          |  229 +++++++-
 flash/voice.py          |   51 +-
 flash/web.py            |  120 +++-
 flash/web/index.html    | 1242 +++++++++++++++++++++++++++++++++++++--
 flash/workspace.py      |   63 +-
 tests/test_voice.py     |   62 +-
 tests/test_web.py       |  249 +++++++-
 9 files changed, 1928 insertions(+), 104 deletions(-)

diff --git a/flash/system_prompt.txt b/flash/system_prompt.txt
index a541b5d..7f20172 100644
--- a/flash/system_prompt.txt
+++ b/flash/system_prompt.txt
@@ -42,7 +42,7 @@ A new file too long for one call is written in pieces: the first with no `append
 == Sending what you make ==
 The user sees only what you send. `view_image` and `screenshot` show a file to you, never to them, and an image in a tool result is one you looked at, not one the user gave you.
 
-When you make an image, a PDF, or a web page for the user, send it the moment it is finished, without being asked: `send_image` for a picture, `send_pdf` for a PDF, `send_html` for a page. Every revision is a new version: send it again each time, and never just view it and describe the change.
+When you make an image, a PDF, a web page, or a document for the user, send it the moment it is finished, without being asked: `send_image` for a picture, `send_pdf` for a PDF, `send_html` for a page, `send_document` for Markdown or text. The user can edit a document you send and comment on it; when they do, read the file again before you change it, and answer each comment. When a document you send has unfinished parts, gaps, or open questions, say so in comments on those passages rather than leaving them to be found. Every revision is a new version: send it again each time, and never just view it and describe the change.
 
 Check before you send, and check for the exact problem the user reported (overlapping lines, a wrong arrow, cut-off text). If you can still see it, or cannot tell, say so plainly. Never tell the user a problem is fixed because you changed the code meant to fix it: it is fixed when you looked and it was gone.
 
diff --git a/flash/theme.py b/flash/theme.py
index f5d8a1b..7d9d0fe 100644
--- a/flash/theme.py
+++ b/flash/theme.py
@@ -329,6 +329,20 @@ def tool_file(path: str) -> bool:
     return True
 
 
+def tool_document(path: str, comments: list[dict]) -> bool:
+    """Hand a document to whoever is drawing, with the agent's comments
+    on it: each a quote from the document and a note about it.
+
+    True when something took it, as with `tool_file`.
+    """
+
+    sink = _sink()
+    if sink is None:
+        return False
+    sink("document", json.dumps({"path": path, "comments": comments}), "")
+    return True
+
+
 def tool_plan(steps: list[dict]) -> bool:
     """Hand the plan's checklist to whoever is drawing, as its steps.
 
diff --git a/flash/tools.py b/flash/tools.py
index f87eddb..90c7ecd 100644
--- a/flash/tools.py
+++ b/flash/tools.py
@@ -61,6 +61,7 @@
     plural,
     remote_answer,
     tool_diff,
+    tool_document,
     tool_file,
     tool_line,
     tool_result,
@@ -120,9 +121,15 @@
 To hand the user a finished web page, use the send_html tool with its
   path. It opens in their browser, or beside the chat in the web UI.
   Screenshot it first and send it once it looks right.
-When you make an image, PDF, or web page for the user, send it with the
-  matching tool as soon as it is finished, without being asked: that is
-  how they see it.
+To hand the user a Markdown or text document (a report, plan, README,
+  notes), use the send_document tool with its path. In the web UI it
+  opens beside the chat, where they can edit it and comment on it; their
+  comments reach you as a message that quotes each passage. To flag
+  unfinished work, a gap, or a question in it, pass comments, each
+  quoting the words it is about.
+When you make an image, PDF, web page, or document for the user, send it
+  with the matching tool as soon as it is finished, without being asked:
+  that is how they see it.
 To see how a web page actually renders, use the screenshot tool on the
   .html file you wrote or on a URL. It runs a headless browser and
   attaches the picture, so it is the only way to check a page you built;
@@ -2407,6 +2414,163 @@ def send_html(path: str, caption: str = "") -> str:
     )
 
 
+DOCUMENT_SUFFIXES = (".md", ".markdown", ".txt")
+MAX_DOCUMENT_BYTES = 2 * 1024 * 1024
+MAX_DOC_COMMENTS = 20
+MAX_QUOTE_CHARS = 300
+MAX_NOTE_CHARS = 1000
+
+_MD_LINK = re.compile(r"!?\[([^\]]*)\]\([^)]*\)")
+_MD_LINE_MARK = re.compile(
+    r"^[ \t]*(?:#{1,6}[ \t]+|>[ \t]?|[-*+][ \t]+|\d+[.)][ \t]+)", re.M
+)
+_MD_INLINE_MARK = re.compile(r"</?u>|\*\*|__|~~|`|(?<!\w)[*_]|[*_](?!\w)")
+_MD_ESCAPE = re.compile(r"\\([\\`*_~\[\]#>|.+-])")
+
+
+def _plain(text: str) -> str:
+    """Text as the page shows it: Markdown's marks gone, spaces single.
+
+    A comment quotes words as they read, and the model may copy them
+    from the file with their marks or without, so both are compared
+    this way."""
+
+    text = _MD_LINK.sub(r"\1", text)
+    text = _MD_LINE_MARK.sub("", text)
+    text = _MD_INLINE_MARK.sub("", text)
+    text = _MD_ESCAPE.sub(r"\1", text)
+    return " ".join(text.split())
+
+
+def _doc_comments(
+    raw: Any, text: str,
+) -> tuple[list[dict], list[str]]:
+    """The comments the model left on a document, cleaned, and a line
+    for each one whose quote is not in the document.
+
+    A quote that is not found still goes: the page shows it as a note
+    on the whole document."""
+
+    if isinstance(raw, str):
+        try:
+            raw = json.loads(raw) if raw.strip() else []
+        except json.JSONDecodeError:
+            return [], ["comments was not a list; none were added"]
+    if isinstance(raw, dict):
+        raw = [raw]
+    if not isinstance(raw, list):
+        return [], ["comments was not a list; none were added"]
+
+    plain_text = _plain(text)
+    flat_text = " ".join(text.split())
+    comments: list[dict] = []
+    missing: list[str] = []
+    for item in raw[:MAX_DOC_COMMENTS]:
+        if not isinstance(item, dict):
+            continue
+        quote = str(item.get("quote") or "").strip()[:MAX_QUOTE_CHARS]
+        note = str(
+            item.get("note") or item.get("comment") or item.get("text") or ""
+        ).strip()[:MAX_NOTE_CHARS]
+        if not note:
+            continue
+        comments.append({"quote": quote, "note": note})
+        if quote and " ".join(quote.split()) not in flat_text and (
+            _plain(quote) not in plain_text
+        ):
+            missing.append(
+                f'comment {len(comments)} quotes "{quote[:60]}", which is '
+                "not in the document word for word, so it shows without "
+                "a place"
+            )
+    return comments, missing
+
+
+def send_document(
+    path: str, caption: str = "", comments: Any = None,
+) -> str:
+    """Put a Markdown or text document in front of the user, with any
+    comments the model left on its passages."""
+
+    tool_line(f"SendDocument({path})")
+
+    doc = Path(path).expanduser()
+    problem = ""
+    size = 0
+    if not doc.is_file():
+        problem = f"no file at {doc}"
+    elif doc.suffix.lower() not in DOCUMENT_SUFFIXES:
+        problem = f"{doc.name} is not a .md or .txt file"
+    else:
+        try:
+            size = doc.stat().st_size
+            doc.read_bytes().decode("utf-8")
+        except OSError as exc:
+            problem = f"could not read {doc}: {exc}"
+        except UnicodeDecodeError:
+            problem = f"{doc.name} is not UTF-8 text"
+        else:
+            if size > MAX_DOCUMENT_BYTES:
+                problem = (
+                    f"{doc.name} is {size // 1024} KB; the limit is "
+                    f"{MAX_DOCUMENT_BYTES // (1024 * 1024)} MB"
+                )
+
+    if problem:
+        result = f"Error: {problem}."
+        tool_result(result, style=ERROR)
+        return result
+
+    kilobytes = max(1, round(size / 1024))
+    note = caption.strip()
+    label = f"{doc.name} ({kilobytes} KB)" + (f": {note}" if note else "")
+    left, missing = _doc_comments(
+        comments, doc.read_text(encoding="utf-8")
+    )
+    count = len(left)
+    if count:
+        label += f", {count} comment{'' if count == 1 else 's'}"
+    unplaced = f" To fix: {'; '.join(missing)}." if missing else ""
+    pinned = (
+        f" Your {count} comment{'' if count == 1 else 's'} show"
+        f"{'s' if count == 1 else ''} on the passages quoted."
+        if count else ""
+    )
+
+    shown = tool_document(str(doc), left) if left else tool_file(str(doc))
+    if shown:
+        tool_result(label)
+        return (
+            f"Sent {doc.name} ({kilobytes} KB) to the user's screen, "
+            f"beside the chat.{pinned} They can edit it there, and "
+            "saving writes the file. Their comments come to you as a "
+            f"message quoting each passage.{unplaced}"
+        )
+
+    problem = _open_with_spinner(doc)
+    tool_result(label + (f" ({problem})" if problem else ""))
+    console.print(
+        Text(f"{' ' * RESULT_INDENT}{_display_path(doc)}", style=DIM)
+    )
+    # The app it opens in has no place for them: they print under it.
+    for item in left:
+        where = f'"{item["quote"]}": ' if item["quote"] else ""
+        console.print(
+            Text(f"{' ' * RESULT_INDENT}{where}{item['note']}", style=DIM)
+        )
+
+    if problem:
+        return (
+            f"Could not open {doc.name}: {problem}. Its path is on "
+            "screen; tell the user where the file is."
+        )
+    return (
+        f"Sent {doc.name} ({kilobytes} KB). It opened in the user's "
+        "default app for it, with its path on screen"
+        + (", and your comments printed under it." if left else ".")
+    )
+
+
 DEFAULT_SCREENSHOT_WIDTH = 1280
 DEFAULT_SCREENSHOT_HEIGHT = 800
 MIN_SCREENSHOT_SIDE = 200
@@ -3089,6 +3253,64 @@ def interact(
             },
         },
     },
+    {
+        "type": "function",
+        "function": {
+            "name": "send_document",
+            "description": (
+                "Show a Markdown or text document (.md, .markdown, .txt) "
+                "to the user: a report, plan, README, or notes you wrote. "
+                "In the web UI it opens beside the chat, rendered, where "
+                "they can edit it and comment on passages; their comments "
+                "reach you as a message quoting each one. Write the file "
+                "first; this only shows it. To flag something for them in "
+                "it (unfinished work, a gap to fill, an open question, an "
+                "assumption to check), add comments pinned to passages."
+            ),
+            "parameters": {
+                "type": "object",
+                "properties": {
+                    "path": {
+                        "type": "string",
+                        "description": "Path to the document.",
+                    },
+                    "caption": {
+                        "type": "string",
+                        "description": (
+                            "Optional single line shown with it."
+                        ),
+                    },
+                    "comments": {
+                        "type": "array",
+                        "description": (
+                            "Optional notes for the user, each pinned to "
+                            "a passage: what is unfinished, missing, or "
+                            "needs their decision there."
+                        ),
+                        "items": {
+                            "type": "object",
+                            "properties": {
+                                "quote": {
+                                    "type": "string",
+                                    "description": (
+                                        "A few words from the document, "
+                                        "exactly as they read, marking "
+                                        "the passage."
+                                    ),
+                                },
+                                "note": {
+                                    "type": "string",
+                                    "description": "What to tell them.",
+                                },
+                            },
+                            "required": ["quote", "note"],
+                        },
+                    },
+                },
+                "required": ["path"],
+            },
+        },
+    },
     {
         "type": "function",
         "function": {
@@ -3693,6 +3915,7 @@ def interact(
     "send_image": send_image,
     "send_pdf": send_pdf,
     "send_html": send_html,
+    "send_document": send_document,
     "screenshot": screenshot,
     "open_page": open_page,
     "interact": interact,
diff --git a/flash/voice.py b/flash/voice.py
index 7842ff5..4bb678b 100644
--- a/flash/voice.py
+++ b/flash/voice.py
@@ -22,6 +22,7 @@
 from collections.abc import Callable
 from dataclasses import dataclass
 from pathlib import Path
+from typing import Optional
 from urllib.error import URLError
 from urllib.request import Request, urlopen
 
@@ -258,8 +259,23 @@ def web_missing() -> list[str]:
     return [p for p in missing_packages() if p != "sounddevice"]
 
 
-def _download(url: str, out: Path, label: str, on_progress: Progress) -> str:
-    """Stream `url` to `out`, reporting percent complete as it goes."""
+# What a download returns when it was called off: not a failure to
+# report, and nothing of it is left on disk.
+CANCELLED = "cancelled"
+
+
+class _Stopped(Exception):
+    """The download was called off between chunks."""
+
+
+def _download(
+    url: str, out: Path, label: str, on_progress: Progress,
+    stop: Optional[threading.Event] = None,
+) -> str:
+    """Stream `url` to `out`, reporting percent complete as it goes.
+
+    Setting `stop` calls it off at the next chunk, a moment at most, and
+    it returns CANCELLED with the part it had deleted."""
 
     out.parent.mkdir(parents=True, exist_ok=True)
     part = out.with_suffix(out.suffix + ".part")
@@ -274,6 +290,8 @@ def _download(url: str, out: Path, label: str, on_progress: Progress) -> str:
 
             with part.open("wb") as handle:
                 while True:
+                    if stop is not None and stop.is_set():
+                        raise _Stopped
                     chunk = response.read(DOWNLOAD_CHUNK)
                     if not chunk:
                         break
@@ -284,6 +302,9 @@ def _download(url: str, out: Path, label: str, on_progress: Progress) -> str:
                     on_progress(label, percent)
 
         part.replace(out)
+    except _Stopped:
+        part.unlink(missing_ok=True)
+        return CANCELLED
     except (URLError, OSError, ValueError) as exc:
         part.unlink(missing_ok=True)
         return f"could not download {label}: {exc}"
@@ -310,7 +331,9 @@ def _unpack(archive: Path, into: Path) -> str:
     return ""
 
 
-def ensure_models(on_progress: Progress) -> str:
+def ensure_models(
+    on_progress: Progress, stop: Optional[threading.Event] = None,
+) -> str:
     """Download whatever voice mode is missing. Returns "" when ready.
 
     Both models are large enough that the download is worth showing, so
@@ -321,11 +344,13 @@ def ensure_models(on_progress: Progress) -> str:
     if models_present():
         return ""
 
-    return (download_listening(vosk_model(), on_progress)
-            or download_voice(piper_voice(), on_progress))
+    return (download_listening(vosk_model(), on_progress, stop)
+            or download_voice(piper_voice(), on_progress, stop))
 
 
-def download_listening(name: str, on_progress: Progress) -> str:
+def download_listening(
+    name: str, on_progress: Progress, stop: Optional[threading.Event] = None,
+) -> str:
     """Fetch and unpack the Vosk model NAME. Returns "" once it is in."""
 
     if listening_installed(name):
@@ -335,6 +360,7 @@ def download_listening(name: str, on_progress: Progress) -> str:
     archive = MODELS_DIR / f"{name}.zip"
     why = _download(
         f"{VOSK_BASE}/{name}.zip", archive, "listening model", on_progress,
+        stop,
     )
     if why:
         return why
@@ -351,7 +377,9 @@ def download_listening(name: str, on_progress: Progress) -> str:
     return ""
 
 
-def download_voice(name: str, on_progress: Progress) -> str:
+def download_voice(
+    name: str, on_progress: Progress, stop: Optional[threading.Event] = None,
+) -> str:
     """Fetch the Piper voice NAME, network and settings. Returns "" once
     it is in."""
 
@@ -368,8 +396,13 @@ def download_voice(name: str, on_progress: Progress) -> str:
 
     onnx, config = piper_paths(name)
     MODELS_DIR.mkdir(parents=True, exist_ok=True)
-    return (_download(onnx_url, onnx, "voice", on_progress)
-            or _download(config_url, config, "voice settings", on_progress))
+    why = (_download(onnx_url, onnx, "voice", on_progress, stop)
+           or _download(config_url, config, "voice settings", on_progress,
+                        stop))
+    # Called off between its two files: no voice without its settings.
+    if why == CANCELLED:
+        onnx.unlink(missing_ok=True)
+    return why
 
 
 def remove_listening(name: str) -> None:
diff --git a/flash/web.py b/flash/web.py
index 7aba5f6..f8c07f8 100644
--- a/flash/web.py
+++ b/flash/web.py
@@ -442,6 +442,13 @@ def sign_out_others(self, keep: str) -> list[str]:
             self.token = secrets.token_urlsafe(24)
         return keys
 
+    def new_token(self) -> str:
+        """End the link and make another. Signed-in browsers stay."""
+
+        with self._lock:
+            self.token = secrets.token_urlsafe(24)
+            return self.token
+
     def listing(self, current: str, watching: set) -> list[dict]:
         """The signed-in browsers, as the page shows them, newest first."""
 
@@ -630,10 +637,16 @@ class Session:
     def __init__(self, hub: Optional[Hub] = None) -> None:
         self.hub = hub or Hub()
         self.lan = False
+        # Documents the user edited in the page since each chat's last
+        # turn: chat id -> the paths, told to the model with its next
+        # message so it reads them again rather than writing over them.
+        self.edited: dict[str, list[str]] = {}
         # The voice models are being downloaded for the page: the first
         # use's pair, or one model picked in Settings, (kind, name).
         self.voice_setup = False
         self.voice_job: Optional[tuple[str, str]] = None
+        # Set to call off whichever of those is running.
+        self.voice_stop = threading.Event()
         # The link's token and the browsers signed in with it. A server
         # restarted after an update takes over the old one's (Server).
         self.access = Access()
@@ -647,7 +660,7 @@ def __init__(self, hub: Optional[Hub] = None) -> None:
         # Starts this same `flash --web` again, as whatever version is
         # installed now. Only a server that owns its process can: one
         # beside a terminal session would take the session down with it.
-        self.restart: Optional[Callable[[], None]] = None
+        self.restart: Optional[Callable[..., None]] = None
         # Opens the server again listening on the network, or not. Set
         # by whatever runs the server (see _attach).
         self.switch_lan: Optional[Callable[[bool], None]] = None
@@ -755,6 +768,7 @@ def set_up_voice(self) -> None:
             if self.voice_setup or self.voice_job:
                 return
             self.voice_setup = True
+            self.voice_stop.clear()
 
         def run() -> None:
             said: dict[str, int] = {}
@@ -769,13 +783,15 @@ def progress(label: str, percent: int) -> None:
 
             why = ""
             try:
-                why = voice.ensure_models(progress)
+                why = voice.ensure_models(progress, self.voice_stop)
             finally:
                 with self._lock:
                     self.voice_setup = False
-                self.hub.publish(
-                    {"type": "voice-setup", "done": True, "error": why}
-                )
+                cancelled = why == voice.CANCELLED
+                self.hub.publish({
+                    "type": "voice-setup", "done": True,
+                    "error": "" if cancelled else why, "cancelled": cancelled,
+                })
 
         threading.Thread(target=run, daemon=True).start()
 
@@ -790,6 +806,7 @@ def fetch_voice_model(self, kind: str, name: str) -> None:
             if self.voice_setup or self.voice_job:
                 raise ValueError("A voice model is already downloading.")
             self.voice_job = (kind, name)
+            self.voice_stop.clear()
 
         def run() -> None:
             said: list[int] = [-1]
@@ -806,7 +823,7 @@ def progress(label: str, percent: int) -> None:
             try:
                 fetch = (voice.download_listening if kind == "listening"
                          else voice.download_voice)
-                why = fetch(name, progress)
+                why = fetch(name, progress, self.voice_stop)
                 if not why:
                     ai.set_config_var(VOICE_SETTINGS[kind], name)
             except Exception as exc:  # noqa: BLE001
@@ -814,13 +831,25 @@ def progress(label: str, percent: int) -> None:
             finally:
                 with self._lock:
                     self.voice_job = None
+                cancelled = why == voice.CANCELLED
                 self.hub.publish({
                     "type": "voice-model", "kind": kind, "name": name,
-                    "done": True, "error": why,
+                    "done": True, "error": "" if cancelled else why,
+                    "cancelled": cancelled,
                 })
 
         threading.Thread(target=run, daemon=True).start()
 
+    def cancel_voice_download(self) -> bool:
+        """Call off the voice download running, if one is. True when one
+        was: it stops at its next chunk and says so to every page."""
+
+        with self._lock:
+            running = self.voice_setup or self.voice_job is not None
+        if running:
+            self.voice_stop.set()
+        return running
+
     # Sub-agents ----------------------------------------------------
 
     def adopt(self, chat: Chat, agent_ids: set) -> None:
@@ -1245,9 +1274,12 @@ def sink(kind: str, text: str, style: str) -> None:
             session.emit(chat, {"type": "diff", "text": text})
         elif kind == "plan":
             session.emit(chat, {"type": "plan", "steps": json.loads(text)})
-        elif kind == "file":
+        elif kind in ("file", "document"):
+            shown = json.loads(text) if kind == "document" else {"path": text}
             try:
-                kept = workspace.keep_file(text)
+                kept = workspace.keep_file(shown["path"])
+                if shown.get("comments"):
+                    kept["comments"] = shown["comments"]
                 session.emit(chat, {"type": "file", **kept})
             except (workspace.WorkspaceError, OSError) as exc:
                 session.emit(chat, {
@@ -1325,6 +1357,17 @@ def project_prompt(found: "workspace.Project") -> str:
     return "\n".join(lines)
 
 
+def edited_note(paths: list[str]) -> str:
+    """What the model is told about documents the user edited by hand."""
+
+    names = ", ".join(paths)
+    return (
+        f"[The user edited {names} in the side panel and saved it. Read "
+        "it again before you change it: their version is the one that "
+        "counts.]"
+    )
+
+
 def attachments(files: Optional[list]) -> list[dict]:
     """The files a message carries, as the page shows them: those that
     are really there, and no more than MAX_ATTACHMENTS."""
@@ -1392,6 +1435,11 @@ def run_turn(
     # its own sub-agents and never another chat's.
     owned = session.owned(chat.id)
     news, delivered = subagents.notices(owned) if owned else ("", [])
+    edited = session.edited.pop(chat.id, [])
+    if edited:
+        news = "\n\n".join(
+            part for part in (news, edited_note(edited)) if part
+        )
     said, images = outgoing(ai, text, files)
     if images and not model_sees_images(ai.Config.host, ai.Config.model):
         session.emit(chat, {"type": "note", "text": (
@@ -1918,6 +1966,23 @@ def command(session: Session, body: dict, browser: str = "") -> dict:
         threading.Timer(RESTART_DELAY, session.restart).start()
         return session.updates.snapshot()
 
+    if name == "server-restart":
+        # From the page's shortcut: Flash started again, with a new link.
+        # The page is handed the new token to come back in with.
+        if session.restart is None:
+            raise ValueError(
+                "This Flash runs beside a terminal session. Quit it there "
+                "and start it again."
+            )
+        if any(c.busy or c.queued for c in session.chats.values()):
+            raise ValueError("Wait for the reply to finish first.")
+        token = session.access.new_token()
+        threading.Timer(
+            RESTART_DELAY, session.restart,
+            ("Restarting, as asked from the page. The new link follows.",),
+        ).start()
+        return {"token": token}
+
     if name == "skills":
         return {"skills": [
             {
@@ -2013,6 +2078,9 @@ def command(session: Session, body: dict, browser: str = "") -> dict:
     if name == "voice-models":
         return voice_models(session)
 
+    if name == "voice-cancel":
+        return {"cancelling": session.cancel_voice_download()}
+
     if name in ("voice-model", "voice-model-remove"):
         kind = str(body.get("kind") or "")
         if kind not in VOICE_KINDS:
@@ -2138,6 +2206,16 @@ def command(session: Session, body: dict, browser: str = "") -> dict:
     if name == "dirs":
         return {"dirs": workspace.folder_suggestions(arg)}
 
+    if name == "document-save":
+        saved = workspace.save_document(arg, str(body.get("text") or ""))
+        # Told to the model with the chat's next message.
+        where = saved["path"] or arg
+        if chat_id in session.chats:
+            listed = session.edited.setdefault(chat_id, [])
+            if where not in listed:
+                listed.append(where)
+        return saved
+
     if name == "undo":
         message = checkpoint.undo()
         if chat_id in session.chats:
@@ -2575,8 +2653,10 @@ def __init__(
         lan: bool = False,
     ):
         # Set before binding: a port already in use makes the base class
-        # call server_close() from inside its own __init__.
+        # call server_close() from inside its own __init__, before any of
+        # the rest is set up.
         self.closing = threading.Event()
+        self.keep_session = False
         super().__init__((LAN_HOST if lan else HOST, port), Handler)
         # Cookies ignore the port, so two servers on one machine each
         # need a name of their own.
@@ -2596,7 +2676,6 @@ def __init__(
         self.swapping = False
         self.swapped = threading.Event()
         self.replacement: Optional[Server] = None
-        self.keep_session = False
 
     @property
     def port(self) -> int:
@@ -2637,9 +2716,14 @@ def network_url(self) -> Optional[str]:
 
     def server_close(self) -> None:
         self.closing.set()
-        self.session.hub.close()
-        if not self.keep_session:
-            self.session.close()
+        # No session yet when the port could not be had: there is nothing
+        # to close but the socket, and the OSError that says why has to
+        # get out.
+        session = getattr(self, "session", None)
+        if session is not None:
+            session.hub.close()
+            if not self.keep_session:
+                session.close()
         super().server_close()
 
 
@@ -2743,7 +2827,9 @@ def _listen(
 RESTART_DELAY = 0.4
 
 
-def _restart(server: "Server") -> None:
+def _restart(
+    server: "Server", why: str = "Restarting to finish the update.",
+) -> None:
     """Start this `flash --web` again as the version now installed.
 
     exec replaces the process in place: the same port, the same
@@ -2759,7 +2845,7 @@ def _restart(server: "Server") -> None:
         args.append("--lan")
     if "--no-open" not in args:
         args.append("--no-open")
-    console.print(Text("Restarting to finish the update.", style=DIM))
+    console.print(Text(why, style=DIM))
     os.execv(  # nosec B606 -- this same interpreter, running Flash again
         sys.executable, [sys.executable, "-m", "flash", *args]
     )
@@ -2814,7 +2900,7 @@ def _attach(server: "Server", standalone: bool) -> None:
             # Windows cannot replace a running Flash at all: its update
             # finishes after this one quits, so there is nothing to
             # restart.
-            session.restart = lambda: _restart(server)
+            session.restart = lambda *why: _restart(server, *why)
             session.updates.can_restart = True
     else:
         _background = server
diff --git a/flash/web/index.html b/flash/web/index.html
index a7250b5..ea2f311 100644
--- a/flash/web/index.html
+++ b/flash/web/index.html
@@ -6,6 +6,9 @@
 <meta name="referrer" content="no-referrer">
 <meta name="theme-color" content="#262624">
 <title>Flash</title>
+<!-- The Flash cursor is on before the first paint, or the system arrow
+     shows until the page's script runs. -->
+<script>try { if (localStorage.getItem("flash-cursor") === "flash") document.documentElement.classList.add("flash-cursor"); } catch (_) { /* per viewer only */ }</script>
 <link rel="icon" type="image/svg+xml" href="/static/logo-icon.svg">
 <style>
 @font-face {
@@ -83,7 +86,17 @@
   -moz-osx-font-smoothing: grayscale;
   text-rendering: optimizeLegibility;
 }
-button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
+button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: var(--pointer, pointer); }
+/* The Flash cursor, from Settings: the arrow at the heart of the Cursor
+   logo, turned to point up and left, in Flash orange. Over something to
+   click it deepens a shade; text fields keep their I-beam. */
+html.flash-cursor {
+  --arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 32 32'%3E%3Cfilter id='s' x='-0.2' y='-0.2' width='1.4' height='1.4'%3E%3CfeDropShadow dx='0' dy='1' stdDeviation='0.9' flood-opacity='0.35'/%3E%3C/filter%3E%3Cpath filter='url(%23s)' d='M4 3 23.7 18.2 13.2 20.4 6.1 28.4Z' fill='%23d97757' stroke='white' stroke-width='1.8' stroke-linejoin='round' paint-order='stroke'/%3E%3C/svg%3E") 3 2, default;
+  --pointer: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 32 32'%3E%3Cfilter id='s' x='-0.2' y='-0.2' width='1.4' height='1.4'%3E%3CfeDropShadow dx='0' dy='1' stdDeviation='0.9' flood-opacity='0.35'/%3E%3C/filter%3E%3Cpath filter='url(%23s)' d='M4 3 23.7 18.2 13.2 20.4 6.1 28.4Z' fill='%23b9532f' stroke='white' stroke-width='1.8' stroke-linejoin='round' paint-order='stroke'/%3E%3C/svg%3E") 3 2, pointer;
+  cursor: var(--arrow);
+}
+html.flash-cursor a[href], html.flash-cursor label, html.flash-cursor summary, html.flash-cursor select { cursor: var(--pointer); }
+html.flash-cursor :is(input:not([type="checkbox"]):not([type="radio"]):not([type="range"]), textarea, [contenteditable="true"], [contenteditable="plaintext-only"]) { cursor: text; }
 svg.i { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
 :focus { outline: none; }
 :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }
@@ -317,6 +330,23 @@
   padding: 10px 16px; border-radius: 20px 20px 6px 20px;
   white-space: pre-wrap; word-wrap: break-word;
 }
+.sent-comments { width: min(460px, 88%); border: 1px solid var(--border); border-radius: 18px 18px 6px 18px; background: var(--surface); overflow: hidden; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04); }
+.sent-comments .head { width: 100%; display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; color: var(--text); }
+.sent-comments button.head { transition: background 0.12s; }
+.sent-comments button.head:hover { background: var(--hover); }
+.sent-comments .badge { width: 32px; height: 32px; flex: none; border-radius: 9px; display: grid; place-items: center; background: color-mix(in srgb, var(--warn) 14%, transparent); color: var(--warn); }
+.sent-comments .badge svg { width: 16px; height: 16px; }
+.sent-comments .words { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
+.sent-comments .name { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.sent-comments .meta { font-size: 12.5px; color: var(--text-3); }
+.sent-comments .chev svg { width: 16px; height: 16px; color: var(--text-3); }
+.sent-comments .items { list-style: none; margin: 0; padding: 4px 14px; }
+.sent-comments .items li { padding: 10px 0; }
+.sent-comments .items li + li { border-top: 1px solid var(--border); }
+.sent-comments .where { display: block; margin-bottom: 4px; font: 600 11px/1.3 var(--mono); color: var(--text-3); }
+.sent-comments .where:empty { display: none; }
+.sent-comments q { display: block; padding-left: 9px; border-left: 3px solid var(--warn); font-size: 13px; line-height: 1.45; color: var(--text-3); quotes: none; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
+.sent-comments p { margin: 6px 0 0; font-size: 14.5px; line-height: 1.5; white-space: pre-wrap; word-wrap: break-word; }
 .assistant { font-size: 16px; line-height: 1.72; color: var(--text); word-wrap: break-word; }
 .assistant > :first-child { margin-top: 0; }
 .assistant > :last-child { margin-bottom: 0; }
@@ -446,7 +476,7 @@
 body.voice-on .shell, body.voice-on #suggestions, body.voice-on #pending { display: none !important; }
 #voice { display: flex; align-items: center; gap: 16px; padding: 14px 14px 14px 16px; border: 1px solid var(--border-strong); border-radius: 22px; background: var(--surface); box-shadow: var(--composer-shadow); animation: pop 0.2s var(--ease); }
 #voice[hidden] { display: none; }
-.voice-orb { --lvl: 0; position: relative; flex: none; width: 58px; height: 58px; border-radius: 50%; cursor: pointer;
+.voice-orb { --lvl: 0; position: relative; flex: none; width: 58px; height: 58px; border-radius: 50%; cursor: var(--pointer, pointer);
   background: radial-gradient(circle at 34% 30%, #ffe1bd 0%, #f0a36f 30%, var(--accent) 62%, color-mix(in srgb, var(--accent) 55%, #000) 100%);
   box-shadow: 0 0 calc(8px + var(--lvl) * 44px) color-mix(in srgb, var(--accent) 55%, transparent);
   transform: scale(calc(1 + var(--lvl) * 0.22)); transition: transform 0.08s linear, box-shadow 0.08s linear, filter 0.3s; }
@@ -480,7 +510,7 @@
 .vm-what small { font: 12px var(--mono); color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .vm-act { flex: none; display: flex; align-items: center; gap: 6px; }
 .vm-act .btn.small { padding: 5px 12px; font-size: 13px; }
-.vm-act .btn:disabled { opacity: 0.5; cursor: default; }
+.vm-act .btn:disabled { opacity: 0.5; cursor: var(--arrow, default); }
 .vm-tag { font-size: 12px; font-weight: 500; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 3px 9px; border-radius: 999px; }
 .vm-progress { font: 12.5px var(--mono); color: var(--text-2); }
 .vm-row.current .vm-what b { color: var(--text); }
@@ -538,7 +568,7 @@
 /* What goes with the next message, above the box. */
 #tray { display: flex; flex-wrap: wrap; gap: 8px; margin: -2px 0 12px; }
 #tray[hidden] { display: none; }
-.tray-item { position: relative; height: 64px; border-radius: 12px; border: 1px solid var(--border); background: var(--hover); animation: bubble 0.3s var(--spring) both; cursor: default; }
+.tray-item { position: relative; height: 64px; border-radius: 12px; border: 1px solid var(--border); background: var(--hover); animation: bubble 0.3s var(--spring) both; cursor: var(--arrow, default); }
 .tray-item.shot { width: 64px; overflow: hidden; }
 .tray-item.shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
 .tray-item.doc { display: flex; align-items: center; gap: 10px; max-width: 240px; padding: 0 30px 0 10px; }
@@ -579,7 +609,10 @@
 .user-files .doc .name { font-size: 13.5px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .user-files .doc .meta { font-size: 12px; color: var(--text-3); }
 button.doc:hover { border-color: var(--border-strong); }
-#model-btn { margin-left: auto; border-color: transparent; max-width: 55%; }
+#model-btn { margin-left: auto; border-color: transparent; max-width: 55%; min-width: 0; flex: 0 1 auto; overflow: hidden; }
+/* Short of room, the model's name gives way; nothing else in the row
+   does, so the send button stays inside the box. */
+.composer-row > :not(#model-btn):not(#context) { flex-shrink: 0; }
 #model-btn span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 #model-btn svg { width: 14px; height: 14px; margin-right: -2px; }
 #context { font-size: 12px; color: var(--text-3); padding: 0 4px; }
@@ -591,11 +624,8 @@
 }
 #send svg { width: 17px; height: 17px; stroke-width: 2.2; }
 #send:active { transform: scale(0.94); }
-#send:disabled { opacity: 0.35; cursor: default; }
+#send:disabled { opacity: 0.35; cursor: var(--arrow, default); }
 #send.stop { background: var(--invert-bg); color: var(--invert-text); }
-.shock { position: fixed; z-index: 60; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 11px; border: 2px solid var(--accent); pointer-events: none; animation: shock 0.6s cubic-bezier(0.2, 0, 0, 1) forwards; }
-.shock.second { animation-delay: 0.08s; opacity: 0; border-width: 1px; }
-@keyframes shock { 0% { opacity: 0.9; transform: scale(0.8); } 100% { opacity: 0; transform: scale(2.8); border-radius: 22px; } }
 #send.stop svg { width: 13px; height: 13px; }
 .fine { text-align: center; font-size: 12px; color: var(--text-3); margin-top: 10px; }
 body.empty .fine { display: none; }
@@ -865,7 +895,15 @@
 .browser-empty { padding: 18px 16px; color: var(--text-3); font-size: 14px; }
 .btn.danger { color: var(--del); border-color: color-mix(in srgb, var(--del) 40%, transparent); white-space: nowrap; }
 .btn.danger:hover { background: color-mix(in srgb, var(--del) 10%, transparent); }
-.btn.danger.arm { background: var(--del); color: #fff; border-color: transparent; }
+.btn.danger.solid { background: var(--del); color: #fff; border-color: transparent; }
+.btn.danger.solid:hover { background: color-mix(in srgb, var(--del) 88%, #000); }
+/* Asking before something that cannot be undone: a small card by the
+   button that asked, until it is answered. */
+.confirm-pop { position: fixed; z-index: 80; width: min(300px, calc(100vw - 24px)); padding: 14px 14px 12px; border-radius: 14px; border: 1px solid var(--border-strong); background: var(--surface); box-shadow: var(--shadow); animation: pop 0.14s var(--ease); transform-origin: var(--from, top right); }
+.confirm-pop b { display: block; font-size: 14.5px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
+.confirm-pop p { margin: 0; font-size: 13.5px; line-height: 1.45; color: var(--text-2); }
+.confirm-pop .row { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
+.confirm-pop .btn { padding: 6px 13px; font-size: 13px; }
 .setting-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 620px; padding: 14px 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); text-align: left; width: 100%; }
 .setting-row .what b { display: block; font-size: 14.5px; font-weight: 500; color: var(--text); margin-bottom: 3px; }
 .setting-row .what span { font-size: 13px; color: var(--text-3); line-height: 1.45; }
@@ -873,8 +911,8 @@
 .switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); transition: transform 0.28s var(--spring); }
 .setting-row[aria-checked="true"] .switch { background: var(--accent); }
 .setting-row[aria-checked="true"] .switch::after { transform: translateX(16px); }
-.setting-row.static { cursor: default; }
-.setting-row[disabled] { opacity: 0.6; cursor: default; }
+.setting-row.static { cursor: var(--arrow, default); }
+.setting-row[disabled] { opacity: 0.6; cursor: var(--arrow, default); }
 .lan-warn { font-size: 13px !important; color: var(--text-3); margin-top: 10px !important; }
 #phone .dialog-buttons { justify-content: center; margin-top: 16px; }
 .setting-row .side { flex: none; display: flex; align-items: center; }
@@ -882,7 +920,7 @@
 @keyframes spin { to { transform: rotate(360deg); } }
 .update-extra { max-width: 620px; margin-top: 10px; }
 .update-extra .note { font: 12.5px/1.55 var(--mono); color: var(--del); white-space: pre-wrap; margin: 0 0 8px; }
-.update-log summary { cursor: pointer; font-size: 12.5px; color: var(--text-3); padding: 4px 2px; }
+.update-log summary { cursor: var(--pointer, pointer); font-size: 12.5px; color: var(--text-3); padding: 4px 2px; }
 .update-log pre { margin: 6px 0 0; max-height: 220px; overflow: auto; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--code-bg); font: 11.5px/1.5 var(--mono); color: var(--text-2); white-space: pre-wrap; }
 #settings-btn { position: relative; }
 #settings-btn.has-update::after { content: ""; position: absolute; left: 25px; top: 7px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 2px var(--side-bg, var(--bg)); animation: pop 0.3s var(--spring) both; }
@@ -1004,7 +1042,7 @@
 /* Folder suggestions, hanging under the field that asked for them. */
 .suggest { position: fixed; z-index: 50; max-height: 248px; overflow-y: auto; padding: 5px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 12px; box-shadow: var(--shadow); animation: pop 0.14s cubic-bezier(0.2, 0, 0, 1); }
 .suggest[hidden] { display: none; }
-.suggest-row { display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: 8px; font: 13.5px var(--mono); color: var(--text-3); cursor: pointer; white-space: nowrap; overflow: hidden; }
+.suggest-row { display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: 8px; font: 13.5px var(--mono); color: var(--text-3); cursor: var(--pointer, pointer); white-space: nowrap; overflow: hidden; }
 .suggest-row svg { width: 15px; height: 15px; flex: none; }
 .suggest-row .path { display: flex; min-width: 0; }
 .suggest-row .where { flex: none; }
@@ -1056,14 +1094,21 @@
   border-left: 1px solid transparent;
   transition: width 0.46s var(--apple), border-color 0.46s var(--apple);
 }
-#viewer.open { width: min(46vw, 780px); border-left-color: var(--border); }
+#viewer.open { width: var(--viewer-w, min(46vw, 780px)); border-left-color: var(--border); }
 #viewer .pane {
-  position: absolute; top: 0; right: 0; bottom: 0; width: min(46vw, 780px);
+  position: absolute; top: 0; right: 0; bottom: 0; width: var(--viewer-w, min(46vw, 780px));
   display: flex; flex-direction: column; background: var(--bg);
   transform: translateX(48px); opacity: 0;
   transition: transform 0.46s var(--apple), opacity 0.3s var(--ease);
 }
 #viewer.open .pane { transform: none; opacity: 1; }
+/* The panel's left edge drags to make it wider or narrower. */
+.viewer-resize { position: absolute; top: 0; bottom: 0; left: 0; z-index: 5; width: 10px; cursor: col-resize; touch-action: none; outline: 0; }
+.viewer-resize::after { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 2px; background: var(--accent); opacity: 0; transition: opacity 0.15s var(--ease); }
+.viewer-resize:hover::after, .viewer-resize:focus-visible::after, #viewer.resizing .viewer-resize::after { opacity: 1; transition-delay: 0.08s; }
+#viewer.resizing, #viewer.resizing .pane { transition: none; }
+body.resizing-viewer { cursor: col-resize; user-select: none; }
+body.resizing-viewer iframe { pointer-events: none; }
 .viewer-bar {
   height: 56px; flex: none; display: flex; align-items: center; gap: 10px;
   padding: 0 10px 0 16px; border-bottom: 1px solid var(--border);
@@ -1074,12 +1119,99 @@
 #viewer-title { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 #viewer-size { font-size: 12px; color: var(--text-3); }
 .viewer-bar a.icon-btn { text-decoration: none; }
+.viewer-editing { display: flex; gap: 6px; margin-right: 6px; flex: none; }
+.viewer-editing[hidden] { display: none; }
 #viewer-body { flex: 1; min-height: 0; position: relative; background: var(--code-bg); }
 #viewer-body iframe { width: 100%; height: 100%; border: 0; display: block; background: var(--code-bg); }
 #viewer-body iframe.page { background: #fff; }
 #viewer-body .image { position: absolute; inset: 0; overflow: auto; display: grid; place-items: center; padding: 20px; cursor: zoom-in; }
 #viewer-body .image img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 8px; box-shadow: var(--shadow); animation: rise-far 0.45s var(--apple) both; }
 #viewer-body .image.actual { place-items: start; cursor: zoom-out; }
+
+/* A document, set like a page: a readable column, generous margins. */
+#viewer-body .doc-scroll { position: absolute; inset: 0; overflow: auto; background: var(--bg); display: flex; flex-direction: column; }
+#viewer-body:has(.doc-foot:not([hidden])) .doc-scroll { bottom: var(--foot, 220px); }
+.doc { width: 100%; max-width: 720px; margin: 0 auto; padding: 36px 40px 72px; font-size: 16px; line-height: 1.75; color: var(--text); animation: rise 0.3s var(--ease) both; }
+.doc.assistant h1 { font-size: 1.85em; letter-spacing: -0.02em; margin: 0 0 0.6em; line-height: 1.2; }
+.doc.assistant h2 { font-size: 1.35em; margin: 1.8em 0 0.6em; padding-bottom: 0.3em; border-bottom: 1px solid var(--border); }
+.doc.assistant h3 { font-size: 1.12em; margin: 1.5em 0 0.5em; }
+.doc.assistant > :first-child { margin-top: 0; }
+.doc.assistant table { margin: 0 0 1em; }
+.doc.assistant img { max-width: 100%; }
+.doc-plain { white-space: pre-wrap; font: 14px/1.65 var(--mono); }
+.doc-error { color: var(--del); }
+::highlight(doc-comment) { background-color: color-mix(in srgb, var(--warn) 30%, transparent); }
+/* Flash's comments: its own colour, and a line under, so they read as
+   notes from it and not the user's. */
+::highlight(doc-note) { background-color: color-mix(in srgb, var(--accent) 16%, transparent); text-decoration: underline 2px color-mix(in srgb, var(--accent) 75%, transparent); text-underline-offset: 4px; }
+.note-pop .who { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; font-size: 12px; font-weight: 600; color: var(--accent); }
+.note-pop .who .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
+.note-pop p { margin: 0 0 4px; font-size: 14px; line-height: 1.5; white-space: pre-wrap; }
+.doc-thumb { display: grid; place-items: center; color: var(--accent); }
+.doc-thumb svg { width: 22px; height: 22px; }
+
+/* Commenting: a button by the selection, then a small box to write in. */
+.doc-comment-btn { position: fixed; z-index: 60; display: inline-flex; align-items: center; gap: 6px; padding: 6px 11px; border-radius: 9px; font-size: 13px; font-weight: 500; color: var(--invert-text); background: var(--invert-bg); box-shadow: var(--shadow); animation: pop 0.14s var(--ease); }
+.doc-comment-btn svg { width: 14px; height: 14px; }
+.doc-comment-box { position: fixed; z-index: 60; width: 280px; padding: 12px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--surface); box-shadow: var(--shadow); animation: pop 0.16s var(--ease); }
+.doc-comment-box blockquote { margin: 0 0 8px; padding-left: 10px; border-left: 3px solid var(--warn); font-size: 12.5px; color: var(--text-3); max-height: 60px; overflow: hidden; }
+.doc-comment-box textarea { width: 100%; resize: vertical; min-height: 64px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: 14px/1.45 var(--sans); outline: 0; }
+.doc-comment-box textarea:focus { border-color: var(--border-strong); }
+.doc-comment-box .row { display: flex; align-items: center; gap: 6px; margin-top: 8px; }
+.doc-comment-box .hint { flex: 1; font-size: 11.5px; color: var(--text-3); }
+
+/* The comments waiting to go, at the foot of the panel. */
+.doc-foot { position: absolute; left: 0; right: 0; bottom: 0; height: var(--foot, 220px); display: flex; flex-direction: column; border-top: 1px solid var(--border); background: var(--surface); }
+.doc-foot[hidden] { display: none; }
+.doc-foot-head { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--border); }
+.doc-foot-head b { font-size: 13.5px; }
+.doc-foot-head .spacer, .doc-editbar .spacer { flex: 1; }
+/* The footer reads as a chat: Flash on the left, the user in bubbles
+   on the right, each under the passage it is about. */
+.doc-comments { list-style: none; margin: 0; padding: 12px 14px 16px; overflow: auto; flex: 1; display: flex; flex-direction: column; gap: 14px; }
+.doc-comments li { display: flex; flex-direction: column; align-items: flex-start; max-width: 100%; animation: rise 0.22s var(--ease) both; }
+.doc-comments li.mine { align-items: flex-end; }
+.doc-comments li.lost .about { opacity: 0.55; }
+.doc-comments .who { display: flex; align-items: center; gap: 6px; margin-bottom: 3px; font-size: 12px; font-weight: 600; color: var(--accent); }
+.doc-comments .who .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
+.doc-comments .about { display: flex; align-items: baseline; gap: 6px; max-width: 88%; margin-bottom: 5px; padding: 2px 0; font-size: 12px; color: var(--text-3); text-align: left; }
+.doc-comments button.about:hover q { color: var(--text-2); }
+.doc-comments .where { flex: none; font: 600 11px/1.3 var(--mono); }
+.doc-comments .where:empty { display: none; }
+.doc-comments q { min-width: 0; padding-left: 7px; border-left: 2px solid var(--warn); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; quotes: none; }
+.doc-comments li.theirs q { border-left-color: var(--accent); }
+.doc-comments .said { margin: 0; max-width: 92%; font-size: 14px; line-height: 1.55; color: var(--text); white-space: pre-wrap; word-wrap: break-word; }
+.doc-comments .replying { margin-bottom: 4px; font-size: 11.5px; color: var(--accent); }
+.doc-comments .bubble { margin: 0; max-width: 85%; padding: 8px 13px; border-radius: 16px 16px 5px 16px; border: 1px solid var(--border); background: var(--bg); font-size: 14px; line-height: 1.5; color: var(--text); white-space: pre-wrap; word-wrap: break-word; cursor: text; }
+.doc-comments .acts { display: flex; align-items: center; gap: 2px; margin-top: 4px; opacity: 0; transition: opacity 0.15s var(--ease); }
+.doc-comments li.theirs .acts { opacity: 1; gap: 4px; }
+.doc-comments li:hover .acts, .doc-comments .acts:focus-within { opacity: 1; }
+.doc-comments .acts .icon-btn { width: 26px; height: 26px; }
+.doc-comments .acts .icon-btn svg { width: 14px; height: 14px; }
+.doc-comments .acts .btn { height: 26px; padding: 0 10px; font-size: 12.5px; }
+.doc-comments .bubble-edit { width: 85%; resize: none; padding: 8px 13px; border-radius: 16px 16px 5px 16px; border: 1px solid var(--accent); background: var(--bg); color: var(--text); font: 14px/1.5 var(--sans); outline: 0; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
+.doc-comments .edit-acts { display: flex; align-items: center; gap: 6px; margin-top: 6px; }
+.doc-comments .edit-acts .hint { font-size: 11.5px; color: var(--text-3); margin-right: 4px; }
+.doc-comments .edit-acts .btn { height: 26px; padding: 0 10px; font-size: 12.5px; }
+
+/* Editing in place: the page itself, with a toolbar for the formatting. */
+.doc-editbar { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid var(--border); background: var(--surface); font-size: 13.5px; color: var(--text-2); }
+.doc-tools { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; min-width: 0; }
+.doc-editbar .doc-block { width: 112px; }
+.doc-tools .sep { width: 1px; height: 18px; background: var(--border-strong); margin: 0 5px; }
+.doc-tool { width: 30px; height: 30px; border-radius: 7px; display: grid; place-items: center; color: var(--text-2); font: 600 14px/1 var(--sans); transition: background 0.12s, color 0.12s; }
+.doc-tool svg { width: 16px; height: 16px; }
+.doc-tool:hover { background: var(--hover); color: var(--text); }
+.doc-tool.on { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
+.doc-tool.t-italic { font-style: italic; font-family: Georgia, serif; }
+.doc-tool.t-underline { text-decoration: underline; text-underline-offset: 3px; }
+.doc-tool.t-strikeThrough { text-decoration: line-through; }
+.doc-block { height: 30px; padding: 0 26px 0 9px; margin-right: 4px; border-radius: 7px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: 13px var(--sans); cursor: var(--pointer, pointer); }
+.doc-editable { outline: 0; caret-color: var(--accent); cursor: text; }
+.doc-editable:empty::before { content: "Start writing"; color: var(--text-3); }
+.doc-editable u, .doc u { text-underline-offset: 3px; }
+.doc-editable .code-head { user-select: none; }
+.doc-link-box input { width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: 13.5px var(--mono); outline: 0; }
 #viewer-body .image.actual img { max-width: none; max-height: none; }
 
 /* Search ------------------------------------------------------------- */
@@ -1144,7 +1276,7 @@
 #palette-input { flex: 1; height: 54px; border: 0; outline: 0; background: transparent; color: var(--text); font: 16px var(--sans); }
 #palette-input::placeholder { color: var(--text-3); font: 16px var(--sans); }
 #palette-list { max-height: 52vh; overflow-y: auto; padding: 6px; }
-.row { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 10px; cursor: pointer; font-size: 14px; color: var(--text-2); }
+.row { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 10px; cursor: var(--pointer, pointer); font-size: 14px; color: var(--text-2); }
 .row .group { font-size: 12px; color: var(--text-3); width: 44px; flex: none; }
 .row .label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .row .keys { display: none; gap: 4px; color: var(--text-3); }
@@ -1208,6 +1340,7 @@
 @media (max-width: 800px) {
   #viewer, #viewer.open { position: fixed; inset: 0; z-index: 55; width: 100%; border: 0; pointer-events: none; }
   #viewer .pane { width: 100%; transform: translateX(100%); opacity: 1; }
+  .viewer-resize { display: none; }
   #viewer.open { pointer-events: auto; }
   #viewer.open .pane { transform: none; }
   #sidebar { position: fixed; z-index: 50; height: 100%; box-shadow: var(--shadow); }
@@ -1296,10 +1429,13 @@
   </main>
 
   <aside id="viewer" aria-label="File" aria-hidden="true">
+    <div class="viewer-resize" role="separator" aria-orientation="vertical" aria-label="Resize the panel" tabindex="0" data-tip="Drag to resize, double-click to reset"></div>
     <div class="pane">
       <header class="viewer-bar">
         <span class="kind" id="viewer-kind"></span>
         <div class="names"><div id="viewer-title"></div><div id="viewer-size"></div></div>
+        <span class="viewer-editing" id="viewer-editing" hidden><button type="button" class="btn small" id="viewer-cancel" data-keys="Esc">Cancel</button><button type="button" class="btn small primary" id="viewer-save" data-keys="⌘S">Save</button></span>
+        <button class="icon-btn" id="viewer-edit" hidden data-tip="Edit" aria-label="Edit"></button>
         <a class="icon-btn" id="viewer-download" data-tip="Download" aria-label="Download"></a>
         <a class="icon-btn" id="viewer-open" target="_blank" rel="noopener" data-tip="Open in a new tab" aria-label="Open in a new tab"></a>
         <button class="icon-btn" id="viewer-close" data-tip="Close" data-keys="Esc" aria-label="Close"></button>
@@ -1372,6 +1508,11 @@
   clip: '<path d="m21.4 11.1-9.2 9.2a6 6 0 0 1-8.5-8.5l9.2-9.2a4 4 0 0 1 5.7 5.7l-9.2 9.2a2 2 0 0 1-2.8-2.8l8.5-8.5"/>',
   slash: '<path d="M15 4 9 20"/>',
   voice: '<path d="M4 10v4M8 6.5v11M12 3.5v17M16 6.5v11M20 10v4"/>',
+  bullets: '<path d="M9 6h11M9 12h11M9 18h11"/><circle cx="4.5" cy="6" r="1" fill="currentColor"/><circle cx="4.5" cy="12" r="1" fill="currentColor"/><circle cx="4.5" cy="18" r="1" fill="currentColor"/>',
+  numbers: '<path d="M10 6h10M10 12h10M10 18h10"/><path d="M4 4.5h1.5V9M4 9h3M4 14.5c.4-.6 1-1 1.7-1 .9 0 1.5.6 1.5 1.3 0 1.2-3.2 2.2-3.2 4.2h3.3"/>',
+  quote: '<path d="M7 7H4.5A1.5 1.5 0 0 0 3 8.5V12h4v5M17 7h-2.5A1.5 1.5 0 0 0 13 8.5V12h4v5"/>',
+  link: '<path d="M10 14a4 4 0 0 0 5.7 0l3-3a4 4 0 0 0-5.7-5.7l-1 1M14 10a4 4 0 0 0-5.7 0l-3 3a4 4 0 0 0 5.7 5.7l1-1"/>',
+  code: '<path d="m8 7-5 5 5 5M16 7l5 5-5 5"/>',
   image: '<rect x="3" y="4" width="18" height="16" rx="3"/><circle cx="9" cy="10" r="1.6"/><path d="m21 16-5.5-5.5L6 20"/>',
   server: '<rect x="3" y="4" width="18" height="7" rx="2"/><rect x="3" y="13" width="18" height="7" rx="2"/><path d="M7 7.5h.01M7 16.5h.01"/>',
   more: '<circle cx="5" cy="12" r="1"/><circle cx="12" cy="12" r="1"/><circle cx="19" cy="12" r="1"/>',
@@ -1567,14 +1708,21 @@
 
 function inline(text) {
   const codes = [];
-  let s = text.replace(/`([^`\n]+)`/g, (_, c) => { codes.push(c); return `\u0000${codes.length - 1}\u0000`; });
+  const kept = [];
+  // A backslash keeps the next mark as itself: \* is an asterisk, not
+  // emphasis. The editor writes these for marks typed as text.
+  let s = text.replace(/\\([\\`*_~\[\]#>|.+-])/g, (_, c) => { kept.push(c); return `\u0001${kept.length - 1}\u0001`; });
+  s = s.replace(/`([^`\n]+)`/g, (_, c) => { codes.push(c); return `\u0000${codes.length - 1}\u0000`; });
   s = esc(s);
+  // Underline has no Markdown of its own: <u>, as GitHub reads it too.
+  s = s.replace(/&lt;u&gt;(.+?)&lt;\/u&gt;/g, "<u>$1</u>");
   s = s.replace(/\[([^\]]+)\]\((https?:\/\/[^\s)]+)\)/g, (_, t, u) => `<a href="${u}" target="_blank" rel="noopener noreferrer">${t}</a>`);
   s = s.replace(/(^|[\s(])(https?:\/\/[^\s<)]+[^\s<).,;:!?])/g, (_, p, u) => `${p}<a href="${u}" target="_blank" rel="noopener noreferrer">${u}</a>`);
   s = s.replace(/\*\*([^*\n]+)\*\*/g, "<strong>$1</strong>").replace(/__([^_\n]+)__/g, "<strong>$1</strong>");
   s = s.replace(/(^|[^*\w])\*([^*\n]+)\*(?!\w)/g, "$1<em>$2</em>").replace(/(^|[^_\w])_([^_\n]+)_(?!\w)/g, "$1<em>$2</em>");
   s = s.replace(/~~([^~\n]+)~~/g, "<del>$1</del>");
-  return s.replace(/\u0000(\d+)\u0000/g, (_, i) => `<code>${esc(codes[+i])}</code>`);
+  s = s.replace(/\u0000(\d+)\u0000/g, (_, i) => `<code>${esc(codes[+i])}</code>`);
+  return s.replace(/\u0001(\d+)\u0001/g, (_, i) => esc(kept[+i]));
 }
 
 const codeBlock = (lang, body) =>
@@ -1910,7 +2058,9 @@
   return `${(bytes / (1024 * 1024)).toFixed(bytes < 10 * 1024 * 1024 ? 1 : 0)} MB`;
 }
 const fileUrl = (entry, download) => `/api/files/${encodeURIComponent(entry.id)}${download ? "?download=1" : ""}`;
-const fileKind = (entry) => (entry.kind === "pdf" ? "PDF" : entry.kind === "html" ? "HTML" : (entry.mime || "image/").split("/")[1].toUpperCase());
+const fileKind = (entry) => (entry.kind === "pdf" ? "PDF" : entry.kind === "html" ? "HTML"
+  : entry.kind === "doc" ? (/\.txt$/i.test(entry.name) ? "Text" : "Markdown")
+  : (entry.mime || "image/").split("/")[1].toUpperCase());
 
 function attachment(entry) {
   const card = el("button", "block attachment");
@@ -1918,10 +2068,12 @@
   card.dataset.file = entry.id;
   const thumb = entry.kind === "image"
     ? `<img alt="" loading="lazy" src="${fileUrl(entry)}">`
+    : entry.kind === "doc" ? `<span class="doc-thumb">${icon("file")}</span>`
     : `<span class="badge">${fileKind(entry)}</span>`;
   card.innerHTML = `<span class="thumb">${thumb}</span><span class="info"><div class="name"></div>` +
-    `<div class="meta">${fileKind(entry)} · ${fileSize(entry.size)}</div></span><span class="chev">${icon("chevRight")}</span>`;
+    `<div class="meta"></div></span><span class="chev">${icon("chevRight")}</span>`;
   card.querySelector(".name").textContent = entry.name;
+  card.querySelector(".meta").textContent = attachmentMeta(entry);
   card.onclick = () => openViewer(entry);
   return card;
 }
@@ -1936,7 +2088,11 @@
   viewing = lastViewed = entry;
   $("#viewer-title").textContent = entry.name;
   $("#viewer-size").textContent = `${fileKind(entry)} · ${fileSize(entry.size)}`;
-  $("#viewer-kind").innerHTML = icon({ pdf: "file", html: "globe" }[entry.kind] || "image");
+  $("#viewer-kind").innerHTML = icon({ pdf: "file", html: "globe", doc: "file" }[entry.kind] || "image");
+  $("#viewer-edit").hidden = entry.kind !== "doc";
+  $("#viewer-editing").hidden = true;
+  if (openDoc && openDoc.onSelect) document.removeEventListener("selectionchange", openDoc.onSelect);
+  openDoc = null;
   const download = $("#viewer-download");
   download.href = fileUrl(entry, true);
   download.setAttribute("download", entry.name);
@@ -1956,6 +2112,8 @@
     frame.title = entry.name;
     frame.src = fileUrl(entry) + "#view=FitH";
     body.appendChild(frame);
+  } else if (entry.kind === "doc") {
+    openDocument(entry, body);
   } else {
     const holder = el("div", "image");
     const img = el("img");
@@ -1973,12 +2131,735 @@
   markOpenCard();
 }
 
+// ---------------------------------------------------------------------------
+// Documents: Markdown or text Flash sent, read like a page, edited in
+// place, and commented on. Select a passage to comment on it; the
+// comments go to Flash together, each quoting what it is about.
+
+let openDoc = null;   // { entry, text, comments, editing, markdown, body }
+
+async function openDocument(entry, body) {
+  const doc = { entry, text: "", comments: [], editing: false, markdown: !/\.txt$/i.test(entry.name), body };
+  // Flash's own comments, sent with the document: what is unfinished or
+  // needs a decision. Dismissed ones stay dismissed in this browser.
+  const gone = dismissedNotes()[entry.id] || [];
+  doc.notes = (entry.comments || []).map((c, i) => ({ i, quote: String(c.quote || ""), note: String(c.note || ""), range: null })).filter((n) => n.note && !gone.includes(n.i));
+  openDoc = doc;
+  body.innerHTML = `<div class="doc-scroll"><article class="doc"></article></div><div class="doc-foot" hidden></div>`;
+  try {
+    const response = await fetch(fileUrl(entry), { credentials: "same-origin" });
+    if (!response.ok) throw new Error(response.statusText);
+    doc.text = await response.text();
+  } catch (error) {
+    body.querySelector(".doc").innerHTML = `<p class="doc-error">Could not open ${esc(entry.name)}: ${esc(error.message)}</p>`;
+    return;
+  }
+  if (openDoc !== doc) return;
+  drawDocument(doc);
+}
+
+function drawDocument(doc) {
+  const article = doc.body.querySelector(".doc");
+  if (!article) return;
+  if (doc.markdown) {
+    article.className = "doc assistant";
+    article.innerHTML = markdown(doc.text);
+  } else {
+    article.className = "doc doc-plain";
+    article.textContent = doc.text;
+  }
+  article.onmouseup = () => setTimeout(() => offerComment(doc), 0);
+  article.onkeyup = (e) => { if (e.shiftKey) offerComment(doc); };
+  markComments(doc);
+  drawComments(doc);
+}
+
+// Where a quote sits in the document's text now, as a range, or null if
+// an edit took it away.
+// The page's text as read, with where each text node starts in it.
+function pageText(root) {
+  const walk = document.createTreeWalker(root, NodeFilter.SHOW_TEXT);
+  const spans = [];
+  let text = "";
+  for (let n = walk.nextNode(); n; n = walk.nextNode()) {
+    if (n.parentElement.closest(".code-head, .copy-code")) continue;
+    spans.push({ node: n, from: text.length });
+    text += n.nodeValue;
+  }
+  return { text, spans };
+}
+
+// Whitespace is loose in a selection, so it is loose in the search: a
+// selection across two list items has a line break the page's text
+// nodes do not.
+const quotePattern = (quote) => quote.trim().replace(/[.*+?^${}()|[\]\\]/g, "\\$&").replace(/\s+/g, "\\s*");
+
+// Every place a quote appears: a phrase can be on the page more than
+// once, and a comment is about one of them.
+function quoteMatches(text, quote) {
+  const pattern = quotePattern(quote);
+  if (!pattern) return [];
+  const re = new RegExp(pattern, "g");
+  const found = [];
+  for (let m = re.exec(text); m; m = re.exec(text)) found.push(m);
+  return found;
+}
+
+// Which of a quote's places a selection is: how many come before it.
+function quoteIndex(root, quote, range) {
+  const { text, spans } = pageText(root);
+  const probe = document.createRange();
+  let start = text.length;
+  for (const s of spans) {
+    if (s.node === range.startContainer) { start = s.from + range.startOffset; break; }
+    probe.selectNodeContents(s.node);
+    if (probe.comparePoint(range.startContainer, range.startOffset) <= 0) { start = s.from; break; }
+  }
+  return quoteMatches(text, quote).filter((m) => m.index < start).length;
+}
+
+function findQuote(root, quote, nth = 0) {
+  const { text, spans } = pageText(root);
+  const all = quoteMatches(text, quote);
+  if (!all.length) return null;
+  const found = all[Math.min(nth, all.length - 1)];
+  const at = (offset, closing) => {
+    for (let i = spans.length - 1; i >= 0; i--) {
+      const s = spans[i];
+      if (closing ? offset > s.from : offset >= s.from) return [s.node, Math.min(offset - s.from, s.node.nodeValue.length)];
+    }
+    return [spans[0].node, 0];
+  };
+  const range = document.createRange();
+  range.setStart(...at(found.index, false));
+  range.setEnd(...at(found.index + found[0].length, true));
+  return range;
+}
+
+// Where a comment's passage is in the file itself, as line and column,
+// so Flash goes straight to it. The page shows Markdown without its
+// marks, so the search lets them sit anywhere between the words:
+// "see docs" is found as "see [docs](https://...)".
+const MD_MARK = /(?:[*_~`\\[]|<\/?u>|\]\([^)\s]*\))*/.source;
+const MD_GAP = /(?:[\s*_~`\\#>|+\-[\]]|\d+[.)]|<\/?u>|\]\([^)\s]*\))+/.source;
+
+function commentSpot(doc, c) {
+  const words = c.quote.trim();
+  if (!words) return null;
+  let pattern;
+  if (doc.markdown) {
+    pattern = words.split(/(\s+)/).filter(Boolean).map((part) => (/^\s/.test(part) ? MD_GAP
+      : [...part].map((ch) => ch.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")).join(MD_MARK))).join("");
+  } else pattern = quotePattern(words);
+  const all = [...doc.text.matchAll(new RegExp(pattern, "g"))];
+  if (!all.length) return null;
+  const m = all[Math.min(c.nth || 0, all.length - 1)];
+  const place = (i) => {
+    const before = doc.text.slice(0, i);
+    return [before.split("\n").length, i - before.lastIndexOf("\n")];
+  };
+  const [line, col] = place(m.index);
+  const [endLine, endCol] = place(m.index + m[0].length - 1);
+  return { line, col, endLine, endCol };
+}
+
+const spotLabel = (s) => (s.line === s.endLine ? `Line ${s.line}, columns ${s.col}-${s.endCol}` : `Lines ${s.line}-${s.endLine}, from ${s.line}:${s.col} to ${s.endLine}:${s.endCol}`);
+
+function markComments(doc) {
+  if (!window.CSS || !CSS.highlights) return;
+  const article = doc.body.querySelector(".doc");
+  const ranges = doc.comments.map((c) => (c.range = findQuote(article, c.quote, c.nth))).filter(Boolean);
+  if (ranges.length) CSS.highlights.set("doc-comment", new Highlight(...ranges));
+  else CSS.highlights.delete("doc-comment");
+  const notes = (doc.notes || []).map((n) => (n.range = n.quote ? findQuote(article, n.quote) || findQuote(article, plainQuote(n.quote)) : null)).filter(Boolean);
+  if (notes.length) CSS.highlights.set("doc-note", new Highlight(...notes));
+  else CSS.highlights.delete("doc-note");
+}
+
+// Flash quotes a passage as it wrote it, sometimes with its Markdown
+// marks: the page's text has none.
+const plainQuote = (q) => q.replace(/!?\[([^\]]*)\]\([^)]*\)/g, "$1").replace(/^[ \t]*(?:#{1,6}[ \t]+|>[ \t]?|[-*+][ \t]+|\d+[.)][ \t]+)/gm, "")
+  .replace(/<\/?u>|\*\*|__|~~|`/g, "").replace(/\\([\\`*_~[\]#>|.+-])/g, "$1");
+
+function dismissedNotes() {
+  try { const kept = JSON.parse(pref("dismissed-notes", "{}")); return kept && typeof kept === "object" ? kept : {}; } catch (_) { return {}; }
+}
+function dismissNote(doc, n) {
+  const kept = dismissedNotes();
+  kept[doc.entry.id] = [...(kept[doc.entry.id] || []), n.i];
+  // Only the newest documents' dismissals are worth keeping.
+  const ids = Object.keys(kept);
+  for (const id of ids.slice(0, Math.max(0, ids.length - 200))) delete kept[id];
+  savePref("dismissed-notes", JSON.stringify(kept));
+  doc.notes = doc.notes.filter((x) => x !== n);
+  dropCommentUi();
+  markComments(doc);
+  drawComments(doc);
+  const card = messagesEl.querySelector(`.attachment[data-file="${doc.entry.id}"] .meta`);
+  if (card) card.textContent = attachmentMeta(doc.entry);
+}
+
+// Answering one of Flash's comments: a comment of the user's own on the
+// same passage, sent with the rest, saying which note it answers.
+function replyToNote(doc, n, from) {
+  const article = doc.body.querySelector(".doc");
+  const quote = n.range ? n.range.toString().trim() : n.quote;
+  const nth = n.range ? quoteIndex(article, quote, n.range) : 0;
+  writeComment(doc, quote, (from || article).getBoundingClientRect(), nth, n.note);
+}
+
+// A click on a passage Flash commented on shows what it said.
+function showNote(doc, n) {
+  dropCommentUi();
+  const box = el("div", "doc-comment-box note-pop", `<div class="who"><span class="dot"></span>Flash</div><p></p><div class="row"><span class="hint"></span><button type="button" class="btn small" data-dismiss>Dismiss</button><button type="button" class="btn small primary" data-reply>Reply</button></div>`);
+  box.querySelector("p").textContent = n.note;
+  const r = n.range.getBoundingClientRect();
+  placeFloat(box, r);
+  document.body.appendChild(box);
+  fitFloat(box, r);
+  box.querySelector("[data-dismiss]").onclick = () => dismissNote(doc, n);
+  box.querySelector("[data-reply]").onclick = () => replyToNote(doc, n, n.range);
+}
+
+// A passage selected in the document: a button beside it to comment.
+function offerComment(doc) {
+  dropCommentUi();
+  if (doc.editing || openDoc !== doc) return;
+  const selection = getSelection();
+  if (!selection || !selection.rangeCount) return;
+  const article = doc.body.querySelector(".doc");
+  if (selection.isCollapsed) {
+    const hit = (doc.notes || []).find((n) => n.range && article.contains(selection.anchorNode) && n.range.isPointInRange(selection.anchorNode, selection.anchorOffset));
+    if (hit) showNote(doc, hit);
+    return;
+  }
+  const range = selection.getRangeAt(0);
+  if (!article.contains(range.commonAncestorContainer)) return;
+  // The selection's own text keeps the breaks between blocks, which
+  // the range's does not, so a passage across lines is found in the file.
+  const quote = selection.toString().trim();
+  if (!quote) return;
+  const r = range.getBoundingClientRect();
+  const button = el("button", "doc-comment-btn", `${icon("edit")}<span>Comment</span>`);
+  button.type = "button";
+  placeFloat(button, r);
+  button.onmousedown = (e) => e.preventDefault();
+  const nth = quoteIndex(article, quote, range);
+  button.onclick = () => writeComment(doc, quote, r, nth);
+  document.body.appendChild(button);
+}
+
+function placeFloat(node, r) {
+  node.style.left = `${Math.max(12, Math.min(innerWidth - 12 - 280, r.left))}px`;
+  node.style.top = `${Math.min(innerHeight - 60, r.bottom + 8)}px`;
+}
+
+function fitFloat(node, r) {
+  if (node.getBoundingClientRect().bottom <= innerHeight - 8) return;
+  node.style.top = `${Math.max(8, r.top - node.offsetHeight - 8)}px`;
+}
+
+function dropCommentUi() { document.querySelectorAll(".doc-comment-btn, .doc-comment-box").forEach((n) => n.remove()); }
+
+function writeComment(doc, quote, r, nth = 0, replyTo = "") {
+  dropCommentUi();
+  const box = el("div", "doc-comment-box", `<blockquote></blockquote><textarea rows="3" placeholder="${replyTo ? "Reply to Flash" : "Add a comment for Flash"}"></textarea><div class="row"><span class="hint">Enter adds \u00b7 Ctrl Enter sends all</span><button type="button" class="btn small" data-cancel>Cancel</button><button type="button" class="btn small primary" data-add>Add</button></div>`);
+  box.querySelector("blockquote").textContent = quote.length > 160 ? `${quote.slice(0, 160)}…` : quote;
+  placeFloat(box, r);
+  document.body.appendChild(box);
+  fitFloat(box, r);
+  const field = box.querySelector("textarea");
+  field.focus();
+  const add = (andSend) => {
+    const text = field.value.trim();
+    if (!text) {
+      // Nothing typed, but the ones before it can still go.
+      if (andSend && doc.comments.length) { dropCommentUi(); sendComments(doc); return; }
+      field.focus();
+      return;
+    }
+    doc.comments.push({ id: Math.random().toString(36).slice(2, 9), quote, nth, text, replyTo });
+    doc.toNewest = true;
+    getSelection().removeAllRanges();
+    dropCommentUi();
+    markComments(doc);
+    drawComments(doc);
+    if (andSend) sendComments(doc);
+  };
+  box.querySelector("[data-add]").onclick = () => add(false);
+  box.querySelector("[data-cancel]").onclick = dropCommentUi;
+  field.addEventListener("keydown", (e) => {
+    e.stopPropagation();
+    if (e.key === "Enter" && (e.metaKey || e.ctrlKey)) { e.preventDefault(); add(true); }
+    else if (e.key === "Enter" && !e.shiftKey) { e.preventDefault(); add(false); }
+    if (e.key === "Escape") { e.preventDefault(); dropCommentUi(); }
+  });
+}
+
+function drawComments(doc) {
+  const foot = doc.body.querySelector(".doc-foot");
+  if (!foot) return;
+  const notes = doc.notes || [];
+  const was = foot.querySelector(".doc-comments");
+  const scrolled = was ? was.scrollTop : 0;
+  foot.hidden = !doc.comments.length && !notes.length;
+  foot.textContent = "";
+  if (foot.hidden) return;
+  const mine = doc.comments.length;
+  const head = el("div", "doc-foot-head", `<b></b><span class="spacer"></span>${mine ? `<button type="button" class="btn small" data-clear>Clear</button><button type="button" class="btn small primary with-icon" data-send>${icon("up")}<span>Send to Flash</span></button>` : ""}`);
+  head.querySelector("b").textContent = [notes.length ? `${notes.length} from Flash` : "", mine ? `${mine} comment${mine === 1 ? "" : "s"}` : ""].filter(Boolean).join(" \u00b7 ");
+  if (mine) {
+    head.querySelector("[data-clear]").onclick = () => { doc.comments = []; markComments(doc); drawComments(doc); };
+    const go = head.querySelector("[data-send]");
+    go.onclick = () => sendComments(doc);
+    go.dataset.tip = "Send them all to Flash";
+    go.dataset.keys = "Ctrl Shift Enter";
+  }
+  foot.appendChild(head);
+  const list = foot.appendChild(el("ol", "doc-comments"));
+  const scrollTo = (range) => {
+    const box = doc.body.querySelector(".doc-scroll");
+    const rect = range.getBoundingClientRect(), frame = box.getBoundingClientRect();
+    box.scrollBy({ top: rect.top - frame.top - frame.height * 0.3, behavior: calm.matches ? "auto" : "smooth" });
+  };
+  // A thread, as the chat is: Flash's comments on the left as its
+  // replies are, the user's on the right in bubbles. Each says above it
+  // which passage it is on; a click there shows the passage.
+  const about = (item, quote, range, where) => {
+    const tag = item.appendChild(el(range ? "button" : "div", "about", `<span class="where"></span><q></q>`));
+    tag.querySelector(".where").textContent = where;
+    tag.querySelector("q").textContent = quote;
+    if (range) { tag.type = "button"; tag.title = "Show it in the document"; tag.onclick = () => scrollTo(range); }
+    else tag.title = "The passage is not in the document now";
+    return tag;
+  };
+  for (const n of notes) {
+    const item = list.appendChild(el("li", "theirs" + (n.quote && !n.range ? " lost" : ""), `<span class="who"><span class="dot"></span>Flash</span>`));
+    if (n.quote) about(item, n.range ? n.range.toString() : n.quote, n.range, "");
+    item.appendChild(el("p", "said")).textContent = n.note;
+    const acts = item.appendChild(el("div", "acts"));
+    const reply = acts.appendChild(el("button", "btn small", "Reply"));
+    reply.type = "button";
+    reply.onclick = () => { if (n.range) scrollTo(n.range); replyToNote(doc, n, item); };
+    acts.appendChild(button("icon-btn", "x", "Dismiss", "", () => dismissNote(doc, n)));
+  }
+  for (const c of doc.comments) {
+    const item = list.appendChild(el("li", "mine" + (c.range ? "" : " lost")));
+    const spot = commentSpot(doc, c);
+    about(item, c.quote, c.range, spot ? (spot.line === spot.endLine ? `Line ${spot.line}` : `Lines ${spot.line}-${spot.endLine}`) : "");
+    if (c.replyTo) item.appendChild(el("span", "replying")).textContent = "Replying to Flash";
+    const bubble = item.appendChild(el("p", "bubble"));
+    bubble.textContent = c.text;
+    bubble.title = "Double-click to edit";
+    bubble.ondblclick = () => editComment(doc, c, item);
+    const acts = item.appendChild(el("div", "acts"));
+    acts.append(
+      button("icon-btn", "edit", "Edit", "", () => editComment(doc, c, item)),
+      button("icon-btn", "x", "Remove", "", () => {
+        doc.comments = doc.comments.filter((x) => x !== c);
+        markComments(doc);
+        drawComments(doc);
+      }),
+    );
+  }
+  // Where the reader was, or at the newest, as a chat is, when that is
+  // one they just added.
+  list.scrollTop = doc.toNewest ? list.scrollHeight : scrolled;
+  doc.toNewest = false;
+}
+
+// A comment not sent yet can be rewritten where it sits: its bubble
+// becomes a box to type in. Enter keeps the change, Esc drops it.
+function editComment(doc, c, item) {
+  if (item.classList.contains("editing")) return;
+  item.classList.add("editing");
+  const bubble = item.querySelector(".bubble");
+  const acts = item.querySelector(".acts");
+  const field = el("textarea", "bubble-edit");
+  field.value = c.text;
+  field.rows = 1;
+  field.setAttribute("aria-label", "Edit your comment");
+  const row = el("div", "edit-acts", `<span class="hint">Enter saves \u00b7 Ctrl Enter sends all</span><button type="button" class="btn small" data-cancel>Cancel</button><button type="button" class="btn small primary" data-save>Save</button>`);
+  bubble.replaceWith(field);
+  acts.replaceWith(row);
+  const fit = () => { field.style.height = "auto"; field.style.height = `${Math.min(field.scrollHeight, 160)}px`; };
+  const save = row.querySelector("[data-save]");
+  const done = (keep, andSend) => {
+    const text = field.value.trim();
+    if (keep && text) c.text = text;
+    drawComments(doc);
+    if (andSend) sendComments(doc);
+  };
+  field.addEventListener("input", () => { fit(); save.disabled = !field.value.trim(); });
+  field.addEventListener("keydown", (e) => {
+    e.stopPropagation();
+    if (e.key === "Enter" && (e.metaKey || e.ctrlKey) && !e.isComposing) { e.preventDefault(); if (field.value.trim()) done(true, true); }
+    else if (e.key === "Enter" && !e.shiftKey && !e.isComposing) { e.preventDefault(); if (field.value.trim()) done(true); }
+    else if (e.key === "Escape") { e.preventDefault(); done(false); }
+  });
+  row.querySelector("[data-cancel]").onclick = () => done(false);
+  save.onclick = () => done(true);
+  fit();
+  field.focus();
+  field.setSelectionRange(field.value.length, field.value.length);
+  item.scrollIntoView({ block: "nearest", behavior: calm.matches ? "auto" : "smooth" });
+}
+
+// Ctrl Shift Enter, or /comments: the open document's comments, all
+// at once.
+function sendOpenComments() {
+  if (!openDoc || !openDoc.comments.length) { toast("No comments waiting to send"); return; }
+  sendComments(openDoc);
+}
+
+// The comments go to Flash as one message, each quoting its passage. An
+// edit still open is saved first, so they are about what Flash will read.
+async function sendComments(doc) {
+  if (!doc.comments.length) return;
+  if (doc.editing && !(await saveDocument(doc))) return;
+  const where = doc.entry.path ? `${doc.entry.name} (${doc.entry.path})` : doc.entry.name;
+  const lines = [`Comments on ${where}, with the line and column each one is about in the file as it is now:`];
+  doc.comments.forEach((c, i) => {
+    const quote = c.quote.replace(/\s+/g, " ");
+    const spot = commentSpot(doc, c);
+    const on = `on "${quote.length > 300 ? `${quote.slice(0, 300)}…` : quote}"`;
+    const said = c.replyTo ? `Replying to your comment "${c.replyTo.replace(/\s+/g, " ").slice(0, 200)}": ${c.text}` : c.text;
+    lines.push("", `${i + 1}. ${spot ? `${spotLabel(spot)}, ${on}` : on[0].toUpperCase() + on.slice(1)}:`, `   ${said.replace(/\n/g, "\n   ")}`);
+  });
+  doc.comments = [];
+  markComments(doc);
+  drawComments(doc);
+  await send(lines.join("\n"));
+  toast("Comments sent to Flash");
+}
+
+// Editing: the page itself turns editable, like a word processor, with
+// a toolbar for the formatting. Nobody types Markdown: it is only what
+// the file on disk holds, for Flash to read, and saving writes it back.
+
+const DOC_TOOLS = [
+  ["bold", "B", "Bold", "\u2318B"], ["italic", "I", "Italic", "\u2318I"], ["underline", "U", "Underline", "\u2318U"], ["strikeThrough", "S", "Strikethrough", ""],
+  null,
+  ["insertUnorderedList", "bullets", "Bulleted list", "- then space"], ["insertOrderedList", "numbers", "Numbered list", "1. then space"],
+  ["blockquote", "quote", "Quote", "> then space"], ["code", "code", "Code", ""], ["link", "link", "Link", ""],
+];
+
+function editDocument(doc) {
+  if (doc.editing) return;
+  dropCommentUi();
+  doc.editing = true;
+  $("#viewer-edit").hidden = true;
+  $("#viewer-editing").hidden = false;
+  const scroll = doc.body.querySelector(".doc-scroll");
+  scroll.innerHTML = `<div class="doc-editbar"><div class="doc-tools" role="toolbar" aria-label="Formatting"></div></div><article class="doc doc-editable"></article>`;
+  const article = scroll.querySelector(".doc");
+  const tools = scroll.querySelector(".doc-tools");
+  if (doc.markdown) {
+    article.className = "doc assistant doc-editable";
+    article.innerHTML = markdown(doc.text);
+    // A code block's label and Copy button, and rendered math, are not
+    // text to type into: they stay whole.
+    article.querySelectorAll(".code-head, math").forEach((n) => { n.contentEditable = "false"; });
+    const block = el("select", "doc-block");
+    block.setAttribute("aria-label", "Text style");
+    block.innerHTML = `<option value="p">Text</option><option value="h1">Title</option><option value="h2">Heading</option><option value="h3">Subheading</option>`;
+    block.onmousedown = block.onfocus = () => saveEditorSelection(doc);
+    block.onchange = () => { restoreEditorSelection(doc); document.execCommand("formatBlock", false, `<${block.value}>`); article.focus(); markTools(doc); };
+    tools.appendChild(block);
+    for (const tool of DOC_TOOLS) {
+      if (!tool) { tools.appendChild(el("span", "sep")); continue; }
+      const [cmd, face, tip, keys] = tool;
+      const b = el("button", `doc-tool t-${cmd}`, ICON[face] ? icon(face) : face);
+      b.type = "button";
+      b.dataset.cmd = cmd;
+      b.dataset.tip = tip;
+      if (keys) b.dataset.keys = keys;
+      b.setAttribute("aria-label", tip);
+      b.onmousedown = (e) => e.preventDefault();   // keeps the selection
+      b.onclick = () => formatDocument(doc, cmd, b);
+      tools.appendChild(b);
+    }
+  } else {
+    article.className = "doc doc-plain doc-editable";
+    article.textContent = doc.text;
+    scroll.querySelector(".doc-editbar").remove();
+  }
+  article.contentEditable = doc.markdown ? "true" : "plaintext-only";
+  article.spellcheck = true;
+  document.execCommand("styleWithCSS", false, false);
+  document.execCommand("defaultParagraphSeparator", false, "p");
+  article.focus();
+  doc.startedAs = editorText(doc);
+  const cancel = async () => {
+    if (editorText(doc) !== doc.startedAs && !(await confirmPop($("#viewer-cancel"), { title: "Discard your changes?", text: "What you changed since you started editing is lost. The file stays as it was.", yes: "Discard" }))) return;
+    if (doc.editing) stopEditing(doc);
+  };
+  $("#viewer-cancel").onclick = cancel;
+  $("#viewer-save").onclick = () => saveDocument(doc);
+  article.addEventListener("keydown", (e) => {
+    e.stopPropagation();
+    const mod = e.metaKey || e.ctrlKey;
+    if (mod && e.key.toLowerCase() === "s") { e.preventDefault(); saveDocument(doc); }
+    else if (mod && e.key.toLowerCase() === "k" && doc.markdown) { e.preventDefault(); formatDocument(doc, "link"); }
+    else if (e.key === "Escape") { e.preventDefault(); cancel(); }
+  });
+  if (doc.markdown) article.addEventListener("input", (e) => autoFormat(doc, e));
+  doc.onSelect = () => markTools(doc);
+  document.addEventListener("selectionchange", doc.onSelect);
+}
+
+const editorOf = (doc) => doc.body.querySelector(".doc-editable");
+const editorText = (doc) => { const a = editorOf(doc); return !a ? doc.text : doc.markdown ? toMarkdown(a) : a.innerText; };
+
+function saveEditorSelection(doc) {
+  const sel = getSelection();
+  doc.savedRange = sel.rangeCount && editorOf(doc).contains(sel.anchorNode) ? sel.getRangeAt(0).cloneRange() : null;
+}
+function restoreEditorSelection(doc) {
+  if (!doc.savedRange) return;
+  const sel = getSelection();
+  sel.removeAllRanges();
+  sel.addRange(doc.savedRange);
+}
+
+// The toolbar shows what the text at the cursor already is.
+function markTools(doc) {
+  const article = editorOf(doc);
+  const sel = getSelection();
+  if (!article || !sel.rangeCount || !article.contains(sel.anchorNode)) return;
+  const node = sel.anchorNode.nodeType === 1 ? sel.anchorNode : sel.anchorNode.parentElement;
+  for (const b of doc.body.querySelectorAll(".doc-tool")) {
+    const cmd = b.dataset.cmd;
+    let on = false;
+    if (cmd === "blockquote") on = !!node.closest("blockquote");
+    else if (cmd === "code") on = !!node.closest("code");
+    else if (cmd === "link") on = !!node.closest("a");
+    else { try { on = document.queryCommandState(cmd); } catch (_) { on = false; } }
+    b.classList.toggle("on", on);
+  }
+  const block = node.closest("h1, h2, h3, h4, p, li, blockquote, pre");
+  const select = doc.body.querySelector(".doc-block");
+  if (select) select.value = block && /^H[1-3]$/.test(block.tagName) ? block.tagName.toLowerCase() : "p";
+}
+
+function formatDocument(doc, cmd, from) {
+  const article = editorOf(doc);
+  article.focus();
+  const sel = getSelection();
+  const node = sel.anchorNode && (sel.anchorNode.nodeType === 1 ? sel.anchorNode : sel.anchorNode.parentElement);
+  if (cmd === "blockquote") {
+    document.execCommand("formatBlock", false, node && node.closest("blockquote") ? "<p>" : "<blockquote>");
+  } else if (cmd === "code") {
+    const inCode = node && node.closest("code");
+    if (inCode && !inCode.closest("pre")) {
+      inCode.replaceWith(document.createTextNode(inCode.textContent));
+    } else if (sel.rangeCount && !sel.isCollapsed) {
+      const code = document.createElement("code");
+      code.textContent = sel.toString();
+      const range = sel.getRangeAt(0);
+      range.deleteContents();
+      range.insertNode(code);
+    }
+  } else if (cmd === "link") {
+    askLink(doc, from);
+    return;
+  } else {
+    document.execCommand(cmd, false, null);
+  }
+  markTools(doc);
+}
+
+// A link: the address, asked for in a small box by the toolbar.
+function askLink(doc, from) {
+  saveEditorSelection(doc);
+  dropCommentUi();
+  const sel = getSelection();
+  const node = sel.anchorNode && (sel.anchorNode.nodeType === 1 ? sel.anchorNode : sel.anchorNode.parentElement);
+  const existing = node && node.closest("a");
+  const box = el("div", "doc-comment-box doc-link-box", `<input type="url" placeholder="https://" spellcheck="false"><div class="row"><span class="hint">Enter to link</span>${existing ? '<button type="button" class="btn small" data-unlink>Remove</button>' : ""}<button type="button" class="btn small primary" data-apply>Link</button></div>`);
+  const anchor = (from || editorOf(doc)).getBoundingClientRect();
+  placeFloat(box, anchor);
+  document.body.appendChild(box);
+  const field = box.querySelector("input");
+  field.value = existing ? existing.getAttribute("href") : "";
+  field.focus();
+  const apply = () => {
+    let url = field.value.trim();
+    if (url && !/^https?:\/\//i.test(url)) url = `https://${url}`;
+    dropCommentUi();
+    restoreEditorSelection(doc);
+    editorOf(doc).focus();
+    if (!url) return;
+    if (getSelection().isCollapsed && !existing) {
+      const a = document.createElement("a");
+      a.href = url;
+      a.textContent = url;
+      getSelection().getRangeAt(0).insertNode(a);
+    } else document.execCommand("createLink", false, url);
+    markTools(doc);
+  };
+  box.querySelector("[data-apply]").onclick = apply;
+  const unlink = box.querySelector("[data-unlink]");
+  if (unlink) unlink.onclick = () => { dropCommentUi(); restoreEditorSelection(doc); document.execCommand("unlink"); };
+  field.addEventListener("keydown", (e) => {
+    e.stopPropagation();
+    if (e.key === "Enter") { e.preventDefault(); apply(); }
+    if (e.key === "Escape") { e.preventDefault(); dropCommentUi(); restoreEditorSelection(doc); }
+  });
+}
+
+// Typing "- ", "1. ", "# " or "> " at the start of a line formats it,
+// the way a word processor does, and the marks themselves go away.
+function autoFormat(doc, e) {
+  if (e.inputType !== "insertText" || e.data !== " ") return;
+  const sel = getSelection();
+  if (!sel.rangeCount || !sel.isCollapsed) return;
+  const node = sel.anchorNode;
+  const block = (node.nodeType === 1 ? node : node.parentElement).closest("p, div, li, h1, h2, h3, h4");
+  if (!block || block.closest("pre")) return;
+  const before = document.createRange();
+  before.setStart(block, 0);
+  before.setEnd(sel.anchorNode, sel.anchorOffset);
+  const typed = before.toString().replace(/\u00a0/g, " ");
+  const rules = { "- ": ["insertUnorderedList"], "* ": ["insertUnorderedList"], "1. ": ["insertOrderedList"], "# ": ["formatBlock", "<h1>"], "## ": ["formatBlock", "<h2>"], "### ": ["formatBlock", "<h3>"], "> ": ["formatBlock", "<blockquote>"] };
+  const rule = rules[typed];
+  if (!rule || block.tagName === "LI") return;
+  before.deleteContents();
+  // An emptied line has nowhere for the cursor to sit, and the format
+  // would land on the line above: keep a <br> in it, the cursor there.
+  if (!block.textContent) block.innerHTML = "<br>";
+  const caret = document.createRange();
+  caret.setStart(block, 0);
+  sel.removeAllRanges();
+  sel.addRange(caret);
+  document.execCommand(rule[0], false, rule[1] || null);
+  markTools(doc);
+}
+
+function stopEditing(doc) {
+  doc.editing = false;
+  if (doc.onSelect) document.removeEventListener("selectionchange", doc.onSelect);
+  dropCommentUi();
+  $("#viewer-edit").hidden = false;
+  $("#viewer-editing").hidden = true;
+  doc.body.querySelector(".doc-scroll").innerHTML = `<article class="doc"></article>`;
+  drawDocument(doc);
+}
+
+async function saveDocument(doc) {
+  if (!editorOf(doc)) return true;
+  const text = editorText(doc);
+  try {
+    const saved = await command("document-save", doc.entry.id, current, { text });
+    doc.text = text;
+    doc.entry.size = saved.size;
+    $("#viewer-size").textContent = `${fileKind(doc.entry)} \u00b7 ${fileSize(saved.size)}`;
+    const card = messagesEl.querySelector(`.attachment[data-file="${doc.entry.id}"] .meta`);
+    if (card) card.textContent = attachmentMeta(doc.entry);
+    stopEditing(doc);
+    toast(saved.path ? `Saved to ${shortPath(saved.path)}` : "Saved");
+    return true;
+  } catch (error) { showFailure(error); return false; }
+}
+
+// The edited page, back into Markdown: what the file holds, and what
+// Flash reads. It writes only what the renderer reads back the same way.
+function toMarkdown(root) {
+  const escapeText = (t) => t.replace(/\u00a0/g, " ").replace(/([\\`*~[\]|])/g, "\\$1").replace(/(?<![A-Za-z0-9])_|_(?![A-Za-z0-9])/g, "\\_");
+  const wrap = (mark, inner, close = mark) => {
+    const lead = inner.match(/^\s*/)[0], tail = inner.match(/\s*$/)[0];
+    const body = inner.trim();
+    return body ? `${lead}${mark}${body}${close}${tail}` : inner;
+  };
+  const inlineOf = (node) => {
+    let out = "";
+    for (const child of node.childNodes) {
+      if (child.nodeType === 3) { out += escapeText(child.nodeValue.replace(/\s+/g, " ")); continue; }
+      if (child.nodeType !== 1) continue;
+      const tag = child.tagName;
+      if (tag === "MATH") {
+        const tex = (child.querySelector('annotation[encoding="application/x-tex"]') || {}).textContent || child.textContent;
+        out += child.getAttribute("display") === "block" ? `$$${tex}$$` : `$${tex}$`;
+      } else if (tag === "BR") out += " ";
+      else if (tag === "STRONG" || tag === "B") out += wrap("**", inlineOf(child));
+      else if (tag === "EM" || tag === "I") out += wrap("*", inlineOf(child));
+      else if (tag === "U") out += wrap("<u>", inlineOf(child), "</u>");
+      else if (tag === "S" || tag === "DEL" || tag === "STRIKE") out += wrap("~~", inlineOf(child));
+      else if (tag === "CODE") out += `\`${child.textContent.replace(/`/g, "'")}\``;
+      else if (tag === "A") { const href = child.getAttribute("href") || ""; const text = inlineOf(child).trim(); out += /^https?:/i.test(href) ? (text === href ? href : `[${text || href}](${href})`) : text; }
+      else if (child.classList.contains("code-head")) continue;
+      else out += inlineOf(child);
+    }
+    return out;
+  };
+  // A paragraph that starts like a heading, list, or quote is kept as
+  // text by escaping its first mark.
+  const plainStart = (line) => line.replace(/^(\s*)(#{1,6}\s|>|[-+]\s|(\d+)([.)])\s)/, (m, sp, mark, num, dot) => (num ? `${sp}${num}\\${dot} ` : `${sp}\\${mark}`));
+  const listOf = (listEl, depth) => {
+    const lines = [];
+    let n = 1;
+    for (const li of listEl.children) {
+      if (li.tagName !== "LI") continue;
+      const marker = listEl.tagName === "OL" ? `${n++}. ` : "- ";
+      const nested = [];
+      const own = document.createElement("div");
+      for (const c of li.childNodes) {
+        if (c.nodeType === 1 && (c.tagName === "UL" || c.tagName === "OL")) nested.push(c);
+        else own.appendChild(c.cloneNode(true));
+      }
+      lines.push(`${"  ".repeat(depth)}${marker}${inlineOf(own).trim()}`);
+      for (const sub of nested) lines.push(...listOf(sub, depth + 1));
+    }
+    return lines;
+  };
+  const blocksOf = (node) => {
+    const blocks = [];
+    let loose = "";
+    const flush = () => { if (loose.trim()) blocks.push(plainStart(loose.trim())); loose = ""; };
+    for (const child of node.childNodes) {
+      if (child.nodeType === 3) { loose += escapeText(child.nodeValue.replace(/\s+/g, " ")); continue; }
+      if (child.nodeType !== 1) continue;
+      const tag = child.tagName;
+      if (/^H[1-6]$/.test(tag)) { flush(); const text = inlineOf(child).trim(); if (text) blocks.push(`${"#".repeat(+tag[1])} ${text}`); }
+      else if (tag === "P" || tag === "DIV") {
+        flush();
+        if (child.querySelector("p, ul, ol, h1, h2, h3, blockquote, pre, table")) blocks.push(...blocksOf(child));
+        else { const text = inlineOf(child).trim(); if (text) blocks.push(plainStart(text)); }
+      } else if (tag === "UL" || tag === "OL") { flush(); const items = listOf(child, 0); if (items.length) blocks.push(items.join("\n")); }
+      else if (tag === "BLOCKQUOTE") { flush(); const inner = blocksOf(child).join("\n\n"); if (inner) blocks.push(inner.split("\n").map((l) => `> ${l}`.trimEnd()).join("\n")); }
+      else if (tag === "PRE") {
+        flush();
+        const lang = ((child.querySelector(".code-head span") || {}).textContent || "").trim();
+        const code = (child.querySelector("code") || child).textContent.replace(/\n$/, "");
+        blocks.push(`\`\`\`${lang}\n${code}\n\`\`\``);
+      } else if (tag === "TABLE") {
+        flush();
+        const rows = [...child.querySelectorAll("tr")].map((tr) => `| ${[...tr.children].map((cell) => inlineOf(cell).trim()).join(" | ")} |`);
+        if (rows.length) {
+          const cols = child.querySelector("tr").children.length;
+          rows.splice(1, 0, `|${" --- |".repeat(cols)}`);
+          blocks.push(rows.join("\n"));
+        }
+      } else if (tag === "HR") { flush(); blocks.push("---"); }
+      else if (tag === "BR") { flush(); }
+      else loose += inlineOf({ childNodes: [child] });
+    }
+    flush();
+    return blocks;
+  };
+  return blocksOf(root).join("\n\n") + "\n";
+}
+
 function closeViewer() {
   const viewer = $("#viewer");
   if (!viewer.classList.contains("open")) return false;
   viewer.classList.remove("open");
   viewer.setAttribute("aria-hidden", "true");
   viewing = null;
+  if (openDoc && openDoc.onSelect) document.removeEventListener("selectionchange", openDoc.onSelect);
+  openDoc = null;
+  dropCommentUi();
+  if (window.CSS && CSS.highlights) CSS.highlights.delete("doc-comment");
   markOpenCard();
   // Emptied once it has slid away, so a PDF is not left loaded.
   setTimeout(() => { if (!viewing) $("#viewer-body").textContent = ""; }, 480);
@@ -2014,7 +2895,51 @@
   return row;
 }
 
+// Comments sent from a document are a message Flash reads as text. In
+// the chat they show as what they are: the file, and each passage with
+// its note and where it is. Not a message to copy or edit.
+const COMMENTS_HEAD = /^Comments on (.+), with the line and column each one is about in the file as it is now:\n\n/;
+
+function parseComments(text) {
+  const head = COMMENTS_HEAD.exec(text || "");
+  if (!head) return null;
+  const named = /^(.*?) \((.+)\)$/.exec(head[1]);
+  const items = text.slice(head[0].length).split(/\n\n(?=\d+\. )/).map((part) => {
+    const m = /^\d+\. (?:(.*?), on|On) "(.*)":\n([\s\S]*)$/.exec(part);
+    return m && { where: m[1] || "", quote: m[2], note: m[3].replace(/^ {3}/gm, "") };
+  });
+  if (!items.length || items.some((i) => !i)) return null;
+  return { name: named ? named[1] : head[1], path: named ? named[2] : "", items };
+}
+
+function commentsBlock(sent, text, steered) {
+  const wrap = el("div", "block user-wrap turn comments-wrap");
+  if (steered) wrap.appendChild(el("div", "steer-tag", `${icon("steer")}<span>Steered mid-turn</span>`));
+  const card = wrap.appendChild(el("div", "sent-comments"));
+  // The file, if this chat still has it, opens from the card.
+  const chat = chats.get(current);
+  const file = chat && [...chat.log].reverse().find((e) => e.type === "file" && (sent.path ? e.path === sent.path : e.name === sent.name));
+  const head = card.appendChild(el(file ? "button" : "div", "head", `<span class="badge">${icon("file")}</span><span class="words"><span class="name"></span><span class="meta"></span></span>${file ? `<span class="chev">${icon("chevRight")}</span>` : ""}`));
+  head.querySelector(".name").textContent = sent.name;
+  head.querySelector(".meta").textContent = `${sent.items.length} comment${sent.items.length === 1 ? "" : "s"}`;
+  head.title = sent.path || sent.name;
+  if (file) { head.type = "button"; head.onclick = () => openViewer(file); }
+  const list = card.appendChild(el("ol", "items"));
+  for (const item of sent.items) {
+    const li = list.appendChild(el("li", "", `<span class="where"></span><q></q><p></p>`));
+    li.querySelector(".where").textContent = item.where.split(",")[0];
+    li.querySelector(".where").title = item.where;
+    li.querySelector("q").textContent = item.quote;
+    li.querySelector("p").textContent = item.note;
+  }
+  wrap.dataset.raw = text;
+  wrap.tabIndex = -1;
+  return wrap;
+}
+
 function userBlock(text, steered, files) {
+  const sent = !(files && files.length) && parseComments(text);
+  if (sent) return commentsBlock(sent, text, steered);
   const wrap = el("div", "block user-wrap turn");
   if (steered) wrap.appendChild(el("div", "steer-tag", `${icon("steer")}<span>Steered mid-turn</span>`));
   if (files && files.length) wrap.appendChild(sentFiles(files));
@@ -2030,6 +2955,14 @@
 
 const extOf = (name) => (name.includes(".") ? name.split(".").pop().toUpperCase().slice(0, 5) : "File");
 
+// What a file card says under the name: its kind, its size, and how
+// many of Flash's comments on it are still open.
+function attachmentMeta(entry) {
+  const gone = (dismissedNotes()[entry.id] || []).length;
+  const open = Math.max(0, (entry.comments || []).length - gone);
+  return `${fileKind(entry)} \u00b7 ${fileSize(entry.size)}` + (open ? ` \u00b7 ${open} from Flash` : "");
+}
+
 // Photos show as themselves and open in the panel; a PDF opens there
 // too; any other file is a chip with its name.
 function sentFiles(files) {
@@ -2170,6 +3103,8 @@
 // Projects pages -----------------------------------------------------------
 
 function drawPage() {
+  // A file belongs to its chat: a page that is not a chat has no panel.
+  closeViewer();
   document.body.classList.remove("empty");
   document.body.classList.add("on-page");
   document.body.classList.toggle("page-projects", view === "projects");
@@ -2381,6 +3316,19 @@
   body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Background</h2><p class="settings-sub">A pixel-art scene behind a new chat, the same ones <code>/background</code> shows in the terminal. Add your own as <code>.scene</code> files in <code>~/.flash/backgrounds</code>.</p><div class="scene-grid" role="radiogroup" aria-label="Background"></div>`);
   drawSceneCards(body.querySelector(".scene-grid"));
 
+  body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Cursor</h2>`);
+  const pointer = el("button", "setting-row", `<span class="what"><b>Flash cursor</b><span>An orange arrow in place of the system pointer, in this browser.</span></span><span class="switch" aria-hidden="true"></span>`);
+  pointer.type = "button";
+  pointer.setAttribute("role", "switch");
+  pointer.setAttribute("aria-checked", document.documentElement.classList.contains("flash-cursor"));
+  pointer.onclick = () => {
+    const on = pointer.getAttribute("aria-checked") !== "true";
+    pointer.setAttribute("aria-checked", on);
+    document.documentElement.classList.toggle("flash-cursor", on);
+    savePref("cursor", on ? "flash" : "system");
+  };
+  body.appendChild(pointer);
+
   body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Conversation</h2><p class="settings-sub">What happens when a chat outgrows the model's context window. The last three exchanges always stay word for word.</p>`);
   const row = el("button", "setting-row", `<span class="what"><b>Summarize old messages</b><span>Have the model condense what no longer fits into a summary it keeps reading. Off, the oldest messages are dropped instead, which is faster and never loses detail from the ones kept.</span></span><span class="switch" aria-hidden="true"></span>`);
   row.type = "button";
@@ -2402,6 +3350,21 @@
 
   body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Updates</h2><p class="settings-sub">New versions come from the Flash repository on GitHub, the same as /update in the terminal.</p><div class="updates-box"></div>`);
   renderUpdates(body.querySelector(".updates-box"));
+
+  body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Restart</h2>`);
+  const again = el("div", "setting-row static", `<span class="what"><b>Restart Flash</b><span></span></span><span class="side"></span>`);
+  const can = !!(info.update || {}).can_restart;
+  again.querySelector(".what span").textContent = can
+    ? "Starts the server again, with a new link, and picks up any change to Flash's code. This page comes back by itself; signed-in browsers stay signed in. Ctrl Alt Shift R does the same."
+    : "This Flash can't restart itself from the page: it was started from a terminal chat, or runs on Windows. Quit it where it runs and start it again.";
+  const go = el("button", "btn", "Restart");
+  go.type = "button";
+  go.disabled = !can;
+  go.onclick = async () => {
+    if (await confirmPop(go, { title: "Restart Flash?", text: "The server starts again with a new link, and the old link stops working. This page reconnects by itself.", yes: "Restart", danger: false })) restartServer();
+  };
+  again.querySelector(".side").appendChild(go);
+  body.appendChild(again);
 }
 
 // Skills --------------------------------------------------------------------
@@ -2707,7 +3670,7 @@ <h2>Install an extension</h2>
       row.querySelector("b").innerHTML = `${fmtBytes(m.size)} <span class="vm-dot">&bull;</span> ${esc(m.label)}`;
       row.querySelector("small").textContent = m.name;
       const act = row.querySelector(".vm-act");
-      if (fetching) { act.innerHTML = `<span class="vm-progress">Downloading</span>`; continue; }
+      if (fetching) { downloadingSlot(act, "Downloading"); continue; }
       if (m.current) { act.innerHTML = `<span class="vm-tag">In use</span>`; continue; }
       const pick = el("button", "btn small", m.installed ? "Use" : "Download");
       pick.type = "button";
@@ -2719,25 +3682,44 @@ <h2>Install an extension</h2>
       };
       act.appendChild(pick);
       if (m.installed) {
-        const drop = button("icon-btn", "x", `Remove, freeing ${fmtBytes(m.size)}`, "", () => confirmed(drop, async () => {
+        const drop = button("icon-btn", "x", `Remove, freeing ${fmtBytes(m.size)}`, "", async () => {
+          if (!(await confirmPop(drop, { title: kind === "listening" ? "Remove this listening model?" : "Remove this voice?", text: `Deletes ${m.name} and frees ${fmtBytes(m.size)}. You can download it again later.`, yes: "Remove" }))) return;
           try { await command("voice-model-remove", m.name, null, { kind }); drawVoiceModels(box); } catch (error) { showFailure(error); }
-        }));
+        });
         act.appendChild(drop);
       }
     }
   }
 }
 
+// A download under way: how far along, and a way to call it off.
+function downloadingSlot(slot, said) {
+  let progress = slot.querySelector(".vm-progress");
+  if (!progress) {
+    slot.textContent = "";
+    progress = slot.appendChild(el("span", "vm-progress"));
+    const stop = slot.appendChild(el("button", "btn small", "Cancel"));
+    stop.type = "button";
+    stop.onclick = async () => {
+      stop.disabled = true;
+      stop.textContent = "Cancelling";
+      try { await command("voice-cancel"); } catch (error) { stop.disabled = false; stop.textContent = "Cancel"; showFailure(error); }
+    };
+  }
+  progress.textContent = said;
+}
+
 function voiceModelEvent(event) {
   const box = document.querySelector(".voice-models");
   if (event.done) {
-    if (event.error) toast(`Could not download ${event.name}: ${event.error}`);
+    if (event.cancelled) toast(`Stopped downloading ${event.name}`);
+    else if (event.error) toast(`Could not download ${event.name}: ${event.error}`);
     else toast(`${event.name} is ready and in use`);
     if (box) drawVoiceModels(box);
     return;
   }
   const slot = box && box.querySelector(`.vm-row[data-key="${CSS.escape(`${event.kind}:${event.name}`)}"] .vm-act`);
-  if (slot) slot.innerHTML = `<span class="vm-progress">${esc(event.label)} ${event.percent}%</span>`;
+  if (slot) downloadingSlot(slot, `${event.label} ${event.percent}%`);
 }
 
 // LAN ----------------------------------------------------------------------
@@ -2762,15 +3744,9 @@ <h2>Install an extension</h2>
   box.appendChild(row);
 }
 
-let lanConfirm = 0;
-
 async function switchLan(on, from) {
-  // From a phone, turning it off ends the page it is on: ask twice.
-  if (!on && remotePage() && Date.now() - lanConfirm > 4000) {
-    lanConfirm = Date.now();
-    toast("This page is on your network, so it will disconnect. Click again to turn it off.");
-    return false;
-  }
+  // From a phone, turning it off ends the page it is on: ask first.
+  if (!on && remotePage() && !(await confirmPop(from && from.querySelector(".switch"), { title: "Turn off network access?", text: "This page is open over your network, so it disconnects, and only this computer can open Flash until it is turned back on.", yes: "Turn off" }))) return false;
   if (from) { from.setAttribute("aria-checked", on); from.disabled = true; }
   try {
     const result = await command("lan", on ? "on" : "off");
@@ -2889,6 +3865,32 @@ <h2>Install an extension</h2>
   catch (error) { showFailure(error); }
 }
 
+// Ctrl Alt Shift R: Flash's server starts again, with a new link, and
+// this page comes back in on it. Three keys held at once, so not by
+// accident. The terminal prints the new link too.
+let restartingServer = false;
+async function restartServer() {
+  if (restartingServer) return;
+  let r;
+  try { r = await command("server-restart"); } catch (error) { showFailure(error); return; }
+  restartingServer = true;
+  toast("Restarting Flash\u2026");
+  const back = `${location.pathname}?token=${encodeURIComponent(r.token)}`;
+  // The old server is gone within half a second; the new one answers
+  // once Python has started, a second or two later.
+  await new Promise((resolve) => setTimeout(resolve, 900));
+  const started = Date.now();
+  while (Date.now() - started < 60000) {
+    try {
+      const up = await fetch(`/api/state?lite=1&token=${encodeURIComponent(r.token)}`, { credentials: "same-origin" });
+      if (up.ok) { location.replace(back); return; }
+    } catch (_) { /* not listening yet */ }
+    await new Promise((resolve) => setTimeout(resolve, 400));
+  }
+  restartingServer = false;
+  toast("Flash did not come back. Start it again in your terminal.");
+}
+
 // The server goes away and comes back as the new version, with the same
 // link. Once it answers again, the page loads fresh from it.
 async function waitForRestart() {
@@ -3050,7 +4052,9 @@ <h2>Install an extension</h2>
   const row = el("div", "setting-row static", `<span class="what"><b>Sign out all other browsers</b><span>They lose access at once. Flash also makes a new link, so the old link and QR code stop working. The new one shows in the terminal Flash runs in.</span></span><span class="side"></span>`);
   const others = el("button", "btn danger", "Sign out others");
   others.type = "button";
-  others.onclick = () => confirmed(others, signOutOthers);
+  others.onclick = async () => {
+    if (await confirmPop(others, { title: "Sign out all other browsers?", text: "They lose access at once, and the old link and QR code stop working. The new link shows in the terminal Flash runs in.", yes: "Sign out others" })) signOutOthers();
+  };
   row.querySelector(".side").appendChild(others);
   body.appendChild(row);
   await renderBrowsers(body.querySelector(".browser-list"));
@@ -3079,25 +4083,73 @@ <h2>Install an extension</h2>
     out.type = "button";
     // Signing this browser out is the one that cannot be undone from
     // here, so it asks twice.
-    out.onclick = () => (b.current ? confirmed(out, () => signOut(b)) : signOut(b));
+    out.onclick = async () => {
+      if (b.current && !(await confirmPop(out, { title: "Sign out this browser?", text: "This page closes, and getting back in takes Flash's link again.", yes: "Sign out" }))) return;
+      signOut(b);
+    };
     row.appendChild(out);
     list.appendChild(row);
   }
 }
 
 // The first press arms the button, a second within four seconds acts.
-function confirmed(b, action) {
-  if (b.classList.contains("arm")) {
-    clearTimeout(b.disarm);
-    b.classList.remove("arm");
-    b.textContent = b.dataset.label;
-    action();
-    return;
-  }
-  b.dataset.label = b.textContent;
-  b.classList.add("arm");
-  b.textContent = "Click again to confirm";
-  b.disarm = setTimeout(() => { b.classList.remove("arm"); b.textContent = b.dataset.label; }, 4000);
+// Asks before something that cannot be undone, in a card by ANCHOR
+// (or mid-window without one). Resolves true for yes; Cancel, Esc, or a
+// click anywhere else is no. It waits as long as it takes.
+let confirmOpen = null;
+function confirmPop(anchor, { title, text = "", yes = "Confirm", danger = true }) {
+  if (confirmOpen) confirmOpen(false);
+  return new Promise((resolve) => {
+    const pop = el("div", "confirm-pop", `<b></b><p></p><div class="row"><button type="button" class="btn small" data-no>Cancel</button><button type="button" class="btn small ${danger ? "danger solid" : "primary"}" data-yes></button></div>`);
+    pop.setAttribute("role", "alertdialog");
+    pop.setAttribute("aria-modal", "false");
+    pop.querySelector("b").textContent = title;
+    const words = pop.querySelector("p");
+    if (text) words.textContent = text; else words.remove();
+    pop.querySelector("[data-yes]").textContent = yes;
+    document.body.appendChild(pop);
+    // Under the button, its right edges lined up; above it when there is
+    // no room below; never past the window's edge.
+    const w = pop.offsetWidth, h = pop.offsetHeight;
+    const r = anchor && anchor.isConnected ? anchor.getBoundingClientRect() : null;
+    let left = r ? r.right - w : (innerWidth - w) / 2;
+    let top = r ? r.bottom + 8 : (innerHeight - h) / 2;
+    if (r && top + h > innerHeight - 8) { top = r.top - h - 8; pop.style.setProperty("--from", "bottom right"); }
+    pop.style.left = `${Math.max(12, Math.min(innerWidth - w - 12, left))}px`;
+    pop.style.top = `${Math.max(12, top)}px`;
+    const back = document.activeElement;
+    const done = (answer) => {
+      if (confirmOpen !== done) return;
+      confirmOpen = null;
+      removeEventListener("mousedown", outside, true);
+      removeEventListener("keydown", keys, true);
+      removeEventListener("resize", no);
+      removeEventListener("scroll", no, true);
+      pop.remove();
+      if (back && back.isConnected && !answer) back.focus({ preventScroll: true });
+      resolve(answer);
+    };
+    const no = () => done(false);
+    const outside = (e) => { if (!pop.contains(e.target)) done(false); };
+    const keys = (e) => {
+      if (e.key === "Escape") { e.preventDefault(); e.stopPropagation(); done(false); }
+      else if (e.key === "Tab") {
+        // Round the two buttons, not out into the page behind.
+        e.preventDefault();
+        const [a, b] = pop.querySelectorAll("button");
+        (document.activeElement === a ? b : a).focus();
+      }
+    };
+    confirmOpen = done;
+    pop.querySelector("[data-no]").onclick = no;
+    pop.querySelector("[data-yes]").onclick = () => done(true);
+    addEventListener("mousedown", outside, true);
+    addEventListener("keydown", keys, true);
+    addEventListener("resize", no);
+    // It is pinned where its button was: once that moves, it goes.
+    addEventListener("scroll", no, true);
+    pop.querySelector("[data-yes]").focus({ preventScroll: true });
+  });
 }
 
 async function signOut(b) {
@@ -3717,6 +4769,7 @@ <h2>Add a host</h2>
 
 function endVoice() {
   if (!voice.on) return;
+  if (voice.state === "setup") command("voice-cancel").catch(() => {});
   voice.on = false;
   if (voice.source) { try { voice.source.stop(); } catch (_) { /* already over */ } }
   if (voice.turn) voice.turn.finish(null);
@@ -3734,7 +4787,7 @@ <h2>Add a host</h2>
 function voiceSetupEvent(event) {
   if (!voice.on || voice.state !== "setup") return;
   if (event.done) { if (voice.setup) voice.setup(event.error || ""); return; }
-  setVoice("setup", `Downloading the ${event.label}: ${event.percent}%`);
+  setVoice("setup", `Downloading the ${event.label}: ${event.percent}%. End voice mode to cancel.`);
 }
 
 // One turn of listening: resolves to the audio, 16 kHz 16-bit, once the
@@ -4064,18 +5117,6 @@ <h2>Add a host</h2>
 $("#voice .voice-end").innerHTML = icon("x");
 $("#voice .voice-end").onclick = endVoice;
 
-// Two rings out from the send button, the second a beat behind.
-function shockwave(from) {
-  if (calm.matches) return;
-  const r = from.getBoundingClientRect();
-  for (const cls of ["shock", "shock second"]) {
-    const ring = document.body.appendChild(el("span", cls));
-    ring.style.left = `${r.left + r.width / 2}px`;
-    ring.style.top = `${r.top + r.height / 2}px`;
-    setTimeout(() => ring.remove(), 800);
-  }
-}
-
 function toBottom(force, smooth) {
   if (!force && !follow) return;
   follow = true;
@@ -4283,6 +5324,7 @@ <h2>Add a host</h2>
     if (loading) buffered.push(event); else apply(event);
   };
   source.onerror = async () => {
+    if (restartingServer) return;
     // Refused rather than unreachable: Flash restarted with a new token,
     // or this browser was signed out.
     // Loading the page again shows why, instead of retrying forever.
@@ -4631,7 +5673,6 @@ <h2>Add a host</h2>
   if (text) sent.push(text);
   sentAt = -1;
   flash($("#send"), "launch", 420);
-  shockwave($("#send"));
   flash($("#composer"), "sent", 340);
   buzz();
   follow = true;
@@ -4687,7 +5728,9 @@ <h2>Add a host</h2>
     const steer = item.mode === "steer";
     const row = el("div", `pending-row${steer ? " steer" : ""}`, `<span class="ico">${icon(steer ? "steer" : "clock")}</span><span class="text"></span>`);
     const n = (item.files || []).length;
-    const said = [item.text, n ? `${n} ${n === 1 ? "file" : "files"}` : ""].filter(Boolean).join(" · ");
+    const comments = parseComments(item.text);
+    const words = comments ? `${comments.items.length} comment${comments.items.length === 1 ? "" : "s"} on ${comments.name}` : item.text;
+    const said = [words, n ? `${n} ${n === 1 ? "file" : "files"}` : ""].filter(Boolean).join(" · ");
     row.querySelector(".text").textContent = said;
     row.querySelector(".text").title = said;
     const mode = el("button", "mode", steer ? "Steers at the next step" : "Runs after this turn");
@@ -5133,6 +6176,7 @@ <h2>Add a host</h2>
 function editLast(text, files) {
   const last = text === undefined ? lastOf("user") || {} : {};
   const value = text ?? last.text ?? "";
+  if (parseComments(value)) { toast("Comments are sent from the document. Open it to add more."); return; }
   files = files ?? last.files ?? [];
   if (!value && !files.length) { toast("Nothing to edit"); return; }
   reattach(files);
@@ -5438,6 +6482,8 @@ <h2>Add a host</h2>
   { label: "Light or dark", keys: "Alt T", slash: "/theme", run: toggleTheme },
   { label: "Open on your phone", keys: "", slash: "/phone", run: () => openPhone() },
   { label: "Keyboard shortcuts", keys: "?", slash: "/help", run: () => openHelp() },
+  { label: "Send the document's comments to Flash", keys: "Ctrl Shift Enter", slash: "/comments", run: sendOpenComments },
+  { label: "Restart the server with a new link", keys: "Ctrl Alt Shift R", slash: "/restart", run: restartServer },
 ];
 
 function runSlash(text) {
@@ -5714,6 +6760,12 @@ <h2>Add a host</h2>
     [["Alt C"], "Copy last reply"], [["Alt Shift C"], "Copy last code block"], [["Alt Z"], "Undo file changes"],
     [["Alt L"], "Clear chat"], [["Alt Shift D"], "Delete chat"], [["Alt T"], "Light or dark"],
     [["Ctrl B"], "Sidebar"], [["Ctrl O"], "Expand tool output"], [["F2"], "Rename chat"],
+    [["Ctrl Alt Shift R"], "Restart the server with a new link (the real Ctrl on a Mac)"],
+  ]],
+  ["Documents", [
+    [["Ctrl Shift Enter"], "Send your comments to Flash"],
+    [["Ctrl Enter"], "Add or save a comment and send them all"],
+    [["Ctrl S"], "Save your edits"], [["Esc"], "Stop editing"],
   ]],
   ["Permission", [
     [["Y", "Enter"], "Allow"], [["N", "Esc"], "Deny"], [["Alt Y", "Alt N"], "Answer while typing"],
@@ -5836,6 +6888,16 @@ <h2>Add a host</h2>
 $("#settings-btn").onclick = () => showSettings();
 $("#jump").onclick = () => toBottom(true, true);
 
+// A code block in a document copies the same way as one in a reply.
+$("#viewer-body").addEventListener("click", (e) => {
+  const copyButton = e.target.closest("[data-copy]");
+  if (copyButton) copy(copyButton.closest("pre").querySelector("code").textContent, "code", copyButton);
+});
+// A click anywhere else puts away the comment button or box.
+document.addEventListener("mousedown", (e) => {
+  if (!e.target.closest(".doc-comment-btn, .doc-comment-box")) dropCommentUi();
+});
+
 messagesEl.addEventListener("click", (e) => {
   const copyButton = e.target.closest("[data-copy]");
   if (copyButton) { copy(copyButton.closest("pre").querySelector("code").textContent, "code", copyButton); return; }
@@ -5848,6 +6910,10 @@ <h2>Add a host</h2>
 window.addEventListener("keydown", (e) => {
   const mod = e.ctrlKey || e.metaKey;
   hideTip();
+  // The real Ctrl, on a Mac too: Cmd Shift R is the browser's own reload.
+  if (e.ctrlKey && e.altKey && e.shiftKey && !e.metaKey && e.code === "KeyR") { e.preventDefault(); restartServer(); return; }
+  // Shift too: Ctrl Enter alone queues a message in the box.
+  if (mod && e.shiftKey && e.key === "Enter" && openDoc && !openDoc.editing && openDoc.comments.length) { e.preventDefault(); sendComments(openDoc); return; }
 
   // An overlay on its way out counts as closed, so a key pressed during
   // its exit (Ctrl K straight after Esc) is not swallowed.
@@ -5933,6 +6999,54 @@ <h2>Add a host</h2>
 $("#recents-btn").onclick = () => foldRecents($("#recents-btn").getAttribute("aria-expanded") === "true");
 foldRecents(pref("recents", "open") === "folded", true);
 $("#viewer-download").innerHTML = icon("download");
+$("#viewer-edit").innerHTML = icon("edit");
+
+// The panel is as wide as it was last dragged, within what leaves the
+// chat room to read. Double-click puts it back.
+const VIEWER_MIN = 340, CHAT_MIN = 320;
+const viewerEl = $("#viewer"), viewerHandle = $(".viewer-resize");
+function setViewerWidth(px) {
+  const chatLeft = viewerEl.previousElementSibling.getBoundingClientRect().left;
+  const room = Math.max(VIEWER_MIN, viewerEl.getBoundingClientRect().right - chatLeft - CHAT_MIN);
+  const width = Math.round(Math.min(room, Math.max(VIEWER_MIN, px)));
+  viewerEl.style.setProperty("--viewer-w", `${width}px`);
+  return width;
+}
+const keptWidth = +pref("viewer-width", 0);
+if (keptWidth) viewerEl.style.setProperty("--viewer-w", `${keptWidth}px`);
+viewerHandle.addEventListener("pointerdown", (e) => {
+  if (e.button !== 0) return;
+  e.preventDefault();
+  viewerHandle.setPointerCapture(e.pointerId);
+  viewerEl.classList.add("resizing");
+  document.body.classList.add("resizing-viewer");
+  dropCommentUi();
+  const right = viewerEl.getBoundingClientRect().right;
+  let width = viewerEl.getBoundingClientRect().width;
+  const move = (ev) => { width = setViewerWidth(right - ev.clientX); };
+  const done = () => {
+    viewerHandle.removeEventListener("pointermove", move);
+    viewerEl.classList.remove("resizing");
+    document.body.classList.remove("resizing-viewer");
+    savePref("viewer-width", width);
+  };
+  viewerHandle.addEventListener("pointermove", move);
+  viewerHandle.addEventListener("pointerup", done, { once: true });
+  viewerHandle.addEventListener("pointercancel", done, { once: true });
+});
+viewerHandle.ondblclick = () => {
+  viewerEl.style.removeProperty("--viewer-w");
+  savePref("viewer-width", "");
+};
+viewerHandle.addEventListener("keydown", (e) => {
+  const step = { ArrowLeft: 32, ArrowRight: -32 }[e.key];
+  if (!step) return;
+  e.preventDefault();
+  savePref("viewer-width", setViewerWidth(viewerEl.getBoundingClientRect().width + step));
+});
+// A smaller window still leaves the chat its room.
+addEventListener("resize", () => { if (viewerEl.style.getPropertyValue("--viewer-w") && viewerEl.classList.contains("open")) setViewerWidth(viewerEl.getBoundingClientRect().width); });
+$("#viewer-edit").onclick = () => { if (openDoc) editDocument(openDoc); };
 $("#viewer-open").innerHTML = icon("external");
 $("#viewer-close").innerHTML = icon("x");
 $("#viewer-close").onclick = closeViewer;
diff --git a/flash/workspace.py b/flash/workspace.py
index 1434d77..b87a07c 100644
--- a/flash/workspace.py
+++ b/flash/workspace.py
@@ -380,8 +380,18 @@ def folder_suggestions(typed: str) -> list[str]:
     ".webp": "image/webp",
     ".bmp": "image/bmp",
     ".pdf": "application/pdf",
+    # Documents: read, edited, and commented on beside the chat.
+    # Markdown goes out as plain text: a browser shows that in a tab,
+    # where text/markdown would only download.
+    ".md": "text/plain; charset=utf-8",
+    ".markdown": "text/plain; charset=utf-8",
+    ".txt": "text/plain; charset=utf-8",
 }
+DOCUMENT_TYPES = (".md", ".markdown", ".txt")
 MAX_SHOWN_BYTES = 50 * 1024 * 1024
+# A document is edited in the page as text, so it stays a size a browser
+# edits comfortably.
+MAX_DOCUMENT_BYTES = 2 * 1024 * 1024
 FILE_ID_RE = re.compile(r"^[0-9a-f]{16}$")
 
 
@@ -397,11 +407,12 @@ def keep_file(source: str) -> dict:
     suffix = path.suffix.lower()
     if suffix not in SHOWN_TYPES:
         raise WorkspaceError(
-            f"{path.name} is not an image, a PDF, or a web page"
+            f"{path.name} is not an image, a PDF, a web page, or a document"
         )
 
     size = path.stat().st_size
-    if size > MAX_SHOWN_BYTES:
+    document = suffix in DOCUMENT_TYPES
+    if size > (MAX_DOCUMENT_BYTES if document else MAX_SHOWN_BYTES):
         raise WorkspaceError(f"{path.name} is too large to show")
 
     file_id = uuid.uuid4().hex[:16]
@@ -409,8 +420,12 @@ def keep_file(source: str) -> dict:
     folder.mkdir(parents=True, exist_ok=True)
     kept = folder / f"{file_id}{suffix}"
     kept.write_bytes(path.read_bytes())
+    if document:
+        # Where it came from, so an edit made in the page lands in the
+        # real file too, not only in this copy.
+        _write(f"files/{file_id}.source.json", {"source": str(path.resolve())})
 
-    return {
+    info = {
         "id": file_id,
         "name": path.name,
         "size": size,
@@ -418,9 +433,44 @@ def keep_file(source: str) -> dict:
         "kind": (
             "pdf" if suffix == ".pdf"
             else "html" if SHOWN_TYPES[suffix] == "text/html"
+            else "doc" if document
             else "image"
         ),
     }
+    if document:
+        info["path"] = str(path.resolve())
+    return info
+
+
+def save_document(file_id: str, text: str) -> dict:
+    """Save a document the user edited in the page: into the kept copy,
+    and into the file it came from, where that still exists.
+
+    Returns where it went: {"size", "path"}, the path "" when only the
+    copy could be written.
+    """
+
+    kept = kept_file(file_id)
+    if kept is None or kept[0].suffix.lower() not in DOCUMENT_TYPES:
+        raise WorkspaceError("no such document")
+    data = (text or "").encode("utf-8")
+    if len(data) > MAX_DOCUMENT_BYTES:
+        raise WorkspaceError("that document is too large to save")
+
+    path = kept[0]
+    path.write_bytes(data)
+    record = _read(f"files/{file_id}.source.json", {})
+    if not isinstance(record, dict):
+        record = {}
+    source = str(record.get("source") or "")
+    written = ""
+    if source and Path(source).is_file():
+        try:
+            Path(source).write_bytes(data)
+            written = source
+        except OSError as exc:
+            raise WorkspaceError(f"could not save {source}: {exc}") from exc
+    return {"size": len(data), "path": written}
 
 
 def kept_file(file_id: str) -> Optional[tuple[Path, str]]:
@@ -435,8 +485,11 @@ def kept_file(file_id: str) -> Optional[tuple[Path, str]]:
         if path.is_file():
             return path, mime
     uploaded = upload_path(file_id)
-    if uploaded is not None and uploaded.suffix.lower() in SHOWN_TYPES:
-        return uploaded, SHOWN_TYPES[uploaded.suffix.lower()]
+    # An upload is served back only as a picture, a PDF, or a page: a
+    # text file the user attached is the model's to read, not the page's.
+    suffix = uploaded.suffix.lower() if uploaded is not None else ""
+    if suffix in SHOWN_TYPES and suffix not in DOCUMENT_TYPES:
+        return uploaded, SHOWN_TYPES[suffix]
     return None
 
 
diff --git a/tests/test_voice.py b/tests/test_voice.py
index dd3fd2f..fb8a749 100644
--- a/tests/test_voice.py
+++ b/tests/test_voice.py
@@ -288,7 +288,7 @@ def test_ensure_models_downloads_what_is_missing(tmp_path, monkeypatch):
     monkeypatch.setattr(voice, "MODELS_DIR", tmp_path)
     asked = []
 
-    def fake_download(url, out, label, on_progress):
+    def fake_download(url, out, label, on_progress, stop=None):
         asked.append(label)
         out.parent.mkdir(parents=True, exist_ok=True)
         out.write_bytes(b"downloaded")
@@ -320,7 +320,9 @@ def test_ensure_models_reports_a_failed_download(tmp_path, monkeypatch):
     monkeypatch.setattr(
         voice,
         "_download",
-        lambda url, out, label, on_progress: f"could not download {label}",
+        lambda url, out, label, on_progress, stop=None: (
+            f"could not download {label}"
+        ),
     )
 
     why = ensure_models(lambda label, percent: None)
@@ -602,7 +604,7 @@ def test_one_model_downloads_by_name(tmp_path, monkeypatch):
     monkeypatch.setattr(voice, "MODELS_DIR", tmp_path)
     fetched = []
 
-    def fetch(url, out, label, on_progress):
+    def fetch(url, out, label, on_progress, stop=None):
         fetched.append(url)
         if url.endswith(".zip"):
             with zipfile.ZipFile(out, "w") as bundle:
@@ -637,6 +639,60 @@ def fetch(url, out, label, on_progress):
     assert not voice.voice_installed("en_US-ryan-high")  # nosec B101
 
 
+class _Slow:
+    """A download that sends a chunk each time it is read, forever."""
+
+    headers = {"Content-Length": str(1 << 30)}
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_exc):
+        return False
+
+    def read(self, _size):
+        return b"x" * 1024
+
+
+def test_a_download_can_be_called_off(tmp_path, monkeypatch):
+    monkeypatch.setattr(voice, "urlopen", lambda *_a, **_kw: _Slow())
+    stop = threading.Event()
+    out = tmp_path / "model.onnx"
+    seen = []
+
+    def progress(label, percent):
+        seen.append(percent)
+        if len(seen) == 3:
+            stop.set()
+
+    why = voice._download("https://x/model.onnx", out, "voice", progress,
+                          stop)
+
+    assert why == voice.CANCELLED  # nosec B101
+    assert len(seen) == 3  # nosec B101
+    # Nothing of it is left: not the file, not its part.
+    assert list(tmp_path.iterdir()) == []  # nosec B101
+
+
+def test_a_voice_called_off_between_its_files_leaves_neither(
+    tmp_path, monkeypatch,
+):
+    monkeypatch.setattr(voice, "MODELS_DIR", tmp_path)
+
+    def fetch(url, out, label, on_progress, stop=None):
+        if label == "voice":
+            out.write_bytes(b"network")
+            return ""
+        return voice.CANCELLED
+
+    monkeypatch.setattr(voice, "_download", fetch)
+
+    why = voice.download_voice("en_US-ryan-high", lambda *_: None)
+
+    assert why == voice.CANCELLED  # nosec B101
+    assert list(tmp_path.iterdir()) == []  # nosec B101
+
+
 def test_only_offered_models_can_be_removed(tmp_path, monkeypatch):
     monkeypatch.setattr(voice, "MODELS_DIR", tmp_path)
 
diff --git a/tests/test_web.py b/tests/test_web.py
index 4040980..3b3c524 100644
--- a/tests/test_web.py
+++ b/tests/test_web.py
@@ -899,6 +899,14 @@ def test_changes_must_be_json(self, server):
         assert response.status == 415
         assert server.session.chats == {}
 
+    def test_a_port_in_use_says_so(self):
+        first = web.Server(0)
+        try:
+            with pytest.raises(OSError, match="could not listen on port"):
+                web._listen(first.port, lan=False)
+        finally:
+            first.server_close()
+
     def test_each_server_has_its_own_token(self):
         first, second = web.Server(0), web.Server(0)
         try:
@@ -1353,6 +1361,174 @@ def test_a_page_is_served_sandboxed(self, server, tmp_path):
         assert policy.startswith("sandbox")
         assert "allow-same-origin" not in policy
 
+    def test_send_document_checks_what_it_is_given(self, tmp_path):
+        wrong = tmp_path / "page.html"
+        wrong.write_text("<p>x</p>")
+        binary = tmp_path / "notes.txt"
+        binary.write_bytes(b"\xff\xfe\x00junk")
+
+        assert "not a .md or .txt file" in tools.send_document(str(wrong))
+        assert "not UTF-8 text" in tools.send_document(str(binary))
+        assert "no file" in tools.send_document(str(tmp_path / "gone.md"))
+
+    def test_in_the_terminal_a_document_opens_in_its_app(
+        self, tmp_path, monkeypatch
+    ):
+        doc = tmp_path / "plan.md"
+        doc.write_text("# Plan")
+        opened = []
+        monkeypatch.setattr(tools, "_open_with_spinner",
+                            lambda path: opened.append(path) or "")
+
+        reply = tools.send_document(str(doc))
+
+        assert opened == [doc]
+        assert "default app" in reply
+
+    def test_in_the_web_ui_a_document_goes_to_the_page(self, tmp_path):
+        doc = tmp_path / "plan.md"
+        doc.write_text("# Plan\n\nShip it.")
+        FakeClient.scripts = [
+            [part(calls=[call("send_document", path=str(doc))]),
+             part(done=True)],
+            [part("There it is."), part(done=True)],
+        ]
+        session = web.Session()
+        chat = session.new_chat()
+
+        run(session, chat, "write me a plan")
+
+        shown = [e for e in chat.log if e["type"] == "file"]
+        assert [(f["name"], f["kind"]) for f in shown] == [("plan.md", "doc")]
+        assert shown[0]["path"] == str(doc.resolve())
+        tool_said = [m for m in chat.messages if m.get("role") == "tool"]
+        assert "comments come to you" in tool_said[0]["content"]
+
+    def test_flash_can_comment_on_a_document_it_sends(self, tmp_path):
+        doc = tmp_path / "plan.md"
+        doc.write_text("# Plan\n\n**Budget**: TBD\n\n- Record the demo\n")
+        comments = [
+            # Quoted with its Markdown marks, or as it reads: both are in.
+            {"quote": "**Budget**: TBD", "note": "Needs a number."},
+            {"quote": "Record the demo", "note": "Not done yet."},
+            {"quote": "Hire a designer", "note": "Not in the file."},
+            {"quote": "", "note": "A note on the whole document."},
+            {"quote": "no note here"},
+        ]
+        FakeClient.scripts = [
+            [part(calls=[call("send_document", path=str(doc),
+                              comments=comments)]),
+             part(done=True)],
+            [part("There it is."), part(done=True)],
+        ]
+        session = web.Session()
+        chat = session.new_chat()
+
+        run(session, chat, "write me a plan")
+
+        shown = [e for e in chat.log if e["type"] == "file"][0]
+        assert [c["note"] for c in shown["comments"]] == [
+            "Needs a number.", "Not done yet.", "Not in the file.",
+            "A note on the whole document.",
+        ]
+        tool_said = [m for m in chat.messages if m.get("role") == "tool"]
+        said = tool_said[0]["content"]
+        assert "Your 4 comments show" in said
+        assert 'comment 3 quotes "Hire a designer"' in said
+        assert "Record the demo" not in said
+
+    def test_comments_as_a_json_string_still_arrive(self, tmp_path):
+        doc = tmp_path / "plan.md"
+        doc.write_text("Ship it.")
+        from flash.theme import capture_tool_output
+        sent = []
+        with capture_tool_output(
+            lambda kind, text, style: sent.append((kind, text))
+        ):
+            tools.send_document(
+                str(doc), comments='[{"quote": "Ship it", "comment": "When?"}]'
+            )
+
+        shown = json.loads([t for k, t in sent if k == "document"][0])
+        assert shown["comments"] == [{"quote": "Ship it", "note": "When?"}]
+
+    def test_in_the_terminal_comments_print_under_the_document(
+        self, tmp_path, monkeypatch, capsys
+    ):
+        doc = tmp_path / "plan.md"
+        doc.write_text("Ship it.")
+        monkeypatch.setattr(tools, "_open_with_spinner", lambda path: "")
+
+        reply = tools.send_document(
+            str(doc), comments=[{"quote": "Ship it", "note": "When?"}]
+        )
+
+        assert '"Ship it": When?' in capsys.readouterr().out
+        assert "comments printed under it" in reply
+
+    def test_a_document_is_served_as_text(self, server, tmp_path):
+        doc = tmp_path / "plan.md"
+        doc.write_text("# Plan <script>x</script>")
+        kept = web.workspace.keep_file(str(doc))
+
+        status, body = request(server, "GET", f"/api/files/{kept['id']}")
+
+        assert status == 200 and body == b"# Plan <script>x</script>"
+        assert request.last.getheader("Content-Type").startswith(
+            "text/plain"
+        )
+        assert request.last.getheader("X-Content-Type-Options") == "nosniff"
+
+    def test_an_edit_saves_to_the_file_and_is_told_next_turn(
+        self, tmp_path,
+    ):
+        doc = tmp_path / "plan.md"
+        doc.write_text("# Plan")
+        kept = web.workspace.keep_file(str(doc))
+        FakeClient.scripts = [[part("Noted."), part(done=True)]]
+        session = web.Session()
+        chat = session.new_chat()
+
+        saved = web.command(session, {
+            "name": "document-save", "arg": kept["id"], "chat": chat.id,
+            "text": "# Plan\n\nMine now.",
+        })
+        run(session, chat, "what changed?")
+
+        assert saved == {"size": 17, "path": str(doc.resolve())}
+        assert doc.read_text() == "# Plan\n\nMine now."
+        assert web.workspace.kept_file(kept["id"])[0].read_text() == (
+            "# Plan\n\nMine now."
+        )
+        told = FakeClient.requests[-1]["messages"][-1]["content"]
+        assert f"edited {doc.resolve()}" in told
+        assert told.endswith("what changed?")
+        # Told once, not on every turn after.
+        assert session.edited == {}
+
+    def test_a_copy_outlives_its_file(self, tmp_path):
+        doc = tmp_path / "scratch.md"
+        doc.write_text("draft")
+        kept = web.workspace.keep_file(str(doc))
+        doc.unlink()
+
+        saved = web.workspace.save_document(kept["id"], "kept anyway")
+
+        assert saved == {"size": 11, "path": ""}
+        assert web.workspace.kept_file(kept["id"])[0].read_text() == (
+            "kept anyway"
+        )
+
+    def test_only_documents_are_saved(self, tmp_path):
+        page = tmp_path / "site.html"
+        page.write_text("<p>x</p>")
+        kept = web.workspace.keep_file(str(page))
+
+        with pytest.raises(web.workspace.WorkspaceError):
+            web.workspace.save_document(kept["id"], "<script>")
+        with pytest.raises(web.workspace.WorkspaceError):
+            web.workspace.save_document("../../etc", "x")
+
     def test_an_svg_is_never_kept(self, tmp_path):
         page = tmp_path / "page.svg"
         page.write_text("<svg onload='alert(1)'/>")
@@ -1868,6 +2044,39 @@ def test_restart_runs_once_the_page_has_its_answer(self, monkeypatch):
         assert result["state"] == "restarting"
         assert restarted.wait(2)
 
+    def test_the_page_can_restart_the_server_with_a_new_link(
+        self, monkeypatch
+    ):
+        monkeypatch.setattr(web, "RESTART_DELAY", 0.01)
+        session = web.Session()
+        key = session.access.sign_in("127.0.0.1", "test")
+        old = session.access.token
+        why = []
+        restarted = threading.Event()
+        session.restart = lambda *said: (why.extend(said), restarted.set())
+
+        result = web.command(session, {"name": "server-restart"})
+
+        assert restarted.wait(2)
+        assert result["token"] == session.access.token != old
+        assert not session.access.token_matches(old)
+        assert "new link" in why[0]
+        # This browser stays signed in through it.
+        assert session.access.browser(key, "127.0.0.1") is not None
+
+    def test_a_server_restart_is_refused_when_it_cannot_be_done(self):
+        with pytest.raises(ValueError, match="terminal session"):
+            web.command(web.Session(), {"name": "server-restart"})
+        session = web.Session()
+        session.restart = lambda *said: None
+        old = session.access.token
+        session.new_chat().busy = True
+
+        with pytest.raises(ValueError, match="Wait for the reply"):
+            web.command(session, {"name": "server-restart"})
+        # Refused, so the link still works.
+        assert session.access.token == old
+
     def test_a_restarted_server_keeps_its_token(self, monkeypatch):
         monkeypatch.setenv(web.TOKEN_ENV, "kept-token-from-before-1234")
         server = web.Server(0)
@@ -2626,7 +2835,7 @@ def test_picking_a_missing_model_downloads_then_uses_it(
                             lambda name, value: saved.update({name: value}))
         monkeypatch.setattr(web.voice, "listening_installed", lambda n: False)
 
-        def fetch(name, progress):
+        def fetch(name, progress, stop=None):
             progress("listening model", 40)
             progress("listening model", 100)
             return ""
@@ -2647,6 +2856,42 @@ def fetch(name, progress):
         assert told[-1]["done"] is True and told[-1]["error"] == ""
         assert saved == {"VOICE_VOSK_MODEL": "vosk-model-en-us-0.22"}
 
+    def test_a_download_can_be_cancelled(self, monkeypatch):
+        saved = {}
+        monkeypatch.setattr(ai, "set_config_var",
+                            lambda name, value: saved.update({name: value}))
+        monkeypatch.setattr(web.voice, "listening_installed", lambda n: False)
+        started = threading.Event()
+
+        def fetch(name, progress, stop=None):
+            progress("listening model", 10)
+            started.set()
+            stop.wait(5)
+            return web.voice.CANCELLED if stop.is_set() else ""
+
+        monkeypatch.setattr(web.voice, "download_listening", fetch)
+        session = web.Session()
+        drain = events_of(session)
+
+        web.command(session, {
+            "name": "voice-model", "arg": "vosk-model-en-us-0.22",
+            "kind": "listening",
+        })
+        started.wait(5)
+        said = web.command(session, {"name": "voice-cancel"})
+        wait_for(lambda: session.voice_job is None)
+        time.sleep(0.05)
+
+        assert said == {"cancelling": True}
+        told = [e for e in drain() if e["type"] == "voice-model"][-1]
+        assert told["done"] and told["cancelled"] and told["error"] == ""
+        # Not the model in use: it never arrived.
+        assert saved == {}
+        # With nothing running, there is nothing to call off.
+        assert web.command(session, {"name": "voice-cancel"}) == {
+            "cancelling": False
+        }
+
     def test_what_settings_refuses(self, monkeypatch):
         session = web.Session()
         in_use = web.voice.vosk_model()
@@ -2669,7 +2914,7 @@ def test_what_settings_refuses(self, monkeypatch):
     def test_the_models_download_once_with_progress(self, monkeypatch):
         gate = threading.Event()
 
-        def fetch(progress):
+        def fetch(progress, stop=None):
             progress("voice", 50)
             progress("voice", 50)
             progress("voice", 100)

From 10a7f48caeea3b1936bfb9fb97e197fcd5f27574 Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Mon, 28 Sep 2026 23:51:26 -0700
Subject: [PATCH 2/8] feat: introduce browser tool for agent's web interactions

---
 flash/browser.py     | 161 ++++++++++++++++++++++++++++++++++++++
 flash/theme.py       |  20 +++++
 flash/tools.py       | 125 +++++++++++++++++++++++-------
 flash/web.py         |  16 +++-
 flash/web/index.html | 181 ++++++++++++++++++++++++++++++++++---------
 tests/test_tools.py  | 127 ++++++++++++++++++++++++++++++
 6 files changed, 562 insertions(+), 68 deletions(-)

diff --git a/flash/browser.py b/flash/browser.py
index 2e25337..2bbcf05 100644
--- a/flash/browser.py
+++ b/flash/browser.py
@@ -15,6 +15,7 @@
 
 import atexit
 import json
+import re
 from pathlib import Path
 from typing import Any, Optional
 from urllib.parse import urlparse
@@ -82,6 +83,65 @@ def resolve_target(
     return path.resolve().as_uri(), ""
 
 
+# A headless browser draws no pointer, so the agent's is drawn into the
+# page: the Flash cursor, following every move of Playwright's mouse, so
+# a screenshot shows where it pointed and what it clicked. It lives in a
+# closed shadow root with pointer-events off: nothing on the page can
+# style it, find it, or be blocked by it.
+_CURSOR_JS = """
+(() => {
+  if (window.__flashCursor) return;
+  const svg = '<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24"'
+    + ' viewBox="0 0 32 32" style="display:block;overflow:visible;'
+    + 'filter:drop-shadow(0 1px 1.2px rgba(0,0,0,.4))"><path'
+    + ' d="M4 3 23.7 18.2 13.2 20.4 6.1 28.4Z" fill="#d97757"'
+    + ' stroke="#fff" stroke-width="1.8" stroke-linejoin="round"'
+    + ' paint-order="stroke"/></svg>';
+  let host = null, x = 0, y = 0, shown = false, pressed = false;
+  const place = () => {
+    if (!host) return;
+    host.style.display = shown ? 'block' : 'none';
+    host.style.transform = 'translate(' + (x - 3) + 'px,' + (y - 2) + 'px)'
+      + (pressed ? ' scale(0.84)' : '');
+  };
+  const make = () => {
+    const root = document.documentElement;
+    if (!root || (host && host.isConnected)) return;
+    host = document.createElement('flash-cursor');
+    host.style.cssText = 'position:fixed;left:0;top:0;width:24px;'
+      + 'height:24px;z-index:2147483647;pointer-events:none;'
+      + 'transform-origin:3px 2px;display:none;';
+    host.attachShadow({mode: 'closed'}).innerHTML = svg;
+    root.appendChild(host);
+    place();
+  };
+  window.__flashCursor = (nx, ny) => {
+    x = nx; y = ny; shown = true; make(); place();
+  };
+  addEventListener('mousemove', (e) => {
+    window.__flashCursor(e.clientX, e.clientY);
+    if (window.__flashMoved) window.__flashMoved(e.clientX, e.clientY);
+  }, true);
+  addEventListener('mousedown', () => { pressed = true; place(); }, true);
+  addEventListener('mouseup', () => { pressed = false; place(); }, true);
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', make);
+  } else {
+    make();
+  }
+})();
+"""
+
+
+def _point(text: str) -> Optional[tuple[float, float]]:
+    """An "x,y" the model typed, in the page's pixels, or None."""
+
+    numbers = re.findall(r"-?\d+(?:\.\d+)?", text or "")
+    if len(numbers) < 2:
+        return None
+    return float(numbers[0]), float(numbers[1])
+
+
 def _watch(page, problems: list[str]) -> None:
     """Record the page's own errors so a broken render explains itself."""
 
@@ -127,9 +187,13 @@ def capture(
     height: int,
     full_page: bool,
     wait_ms: int,
+    mouse: Optional[tuple[float, float]] = None,
 ) -> tuple[list[str], str]:
     """Render `url` to `out` as a PNG.
 
+    With `mouse`, the pointer is moved there first, so the picture shows
+    what hovering does, with the Flash cursor where it rests.
+
     Returns `(problems, "")` on success, where `problems` are errors the
     page itself reported, or `([], reason)` when no screenshot was taken.
     """
@@ -154,12 +218,17 @@ def capture(
                     viewport={"width": width, "height": height},
                 )
                 _watch(page, problems)
+                page.add_init_script(_CURSOR_JS)
                 page.goto(
                     url,
                     wait_until="load",
                     timeout=NAVIGATION_TIMEOUT_MS,
                 )
                 _settle(page, wait_ms)
+                if mouse is not None:
+                    page.mouse.move(*mouse)
+                    # Long enough for a hover's transition to show.
+                    page.wait_for_timeout(HOVER_SETTLE_MS)
                 page.screenshot(path=str(out), full_page=full_page)
             finally:
                 browser.close()
@@ -193,6 +262,14 @@ def _launch_reason(exc: Exception) -> str:
 # navigation is worth waiting the longer time for.
 ACTION_TIMEOUT_MS = 5000
 
+# After the mouse arrives somewhere, before the picture: a hover's own
+# transition is usually done by then.
+HOVER_SETTLE_MS = 300
+
+# How many steps a move or a drag is made in: enough that the page sees
+# the pointer travel, as it would a hand's, and not jump.
+MOUSE_STEPS = 12
+
 # A page can carry hundreds of links. Enough of them to work with beats a
 # list the model has to wade through.
 MAX_ELEMENTS = 40
@@ -253,6 +330,27 @@ def __init__(self, driver, browser) -> None:
         self.browser = browser
         self.page: Any = None
         self.problems: list[str] = []
+        # Where the agent's pointer is, in the page's pixels, once it has
+        # moved: drawn again on a page it navigated to.
+        self.mouse: Optional[tuple[float, float]] = None
+
+    def moved(self, x: float, y: float) -> None:
+        self.mouse = (x, y)
+
+    def redraw_cursor(self) -> None:
+        """Put the cursor back where the pointer is, on a page that was
+        loaded since it last moved and so has not drawn it yet."""
+
+        if self.mouse is None or self.page is None:
+            return
+        try:
+            self.page.evaluate(
+                "([x, y]) => window.__flashCursor"
+                " && window.__flashCursor(x, y)",
+                list(self.mouse),
+            )
+        except Exception:  # noqa: BLE001, S110
+            pass
 
     def drain(self) -> list[str]:
         """Hand over the errors seen since the last time we asked."""
@@ -323,6 +421,8 @@ def open_page(url: str, *, width: int, height: int, wait_ms: int) -> str:
         page.set_default_timeout(ACTION_TIMEOUT_MS)
         session.page = page
         _watch(page, session.problems)
+        page.expose_function("__flashMoved", session.moved)
+        page.add_init_script(_CURSOR_JS)
         page.goto(url, wait_until="load", timeout=NAVIGATION_TIMEOUT_MS)
         _settle(page, wait_ms)
     except PlaywrightError as exc:
@@ -370,6 +470,8 @@ def interact(
         _settle(page, wait_ms, ACTION_TIMEOUT_MS)
     except (PageProblem, PlaywrightError) as exc:
         return "", _first_line(exc)
+    finally:
+        _session.redraw_cursor()
 
     return note, ""
 
@@ -529,11 +631,68 @@ def _locate(page, selector: str):
 
 
 def _act_click(page, selector: str, value: str) -> str:
+    # No selector, a point: a click where the model sees something in the
+    # screenshot that no selector names, like a spot on a canvas.
+    if not selector:
+        spot = _point(value)
+        if spot is None:
+            raise PageProblem(
+                "click needs a selector, or a point as value: \"x,y\" in "
+                "the screenshot's pixels."
+            )
+        page.mouse.move(*spot, steps=MOUSE_STEPS)
+        page.mouse.click(*spot)
+
+        return f"Clicked at {_spot(spot)}."
+
     _locate(page, selector).click(timeout=ACTION_TIMEOUT_MS)
 
     return f"Clicked {selector}."
 
 
+def _spot(point: tuple[float, float]) -> str:
+    return f"{point[0]:g},{point[1]:g}"
+
+
+def _act_move(page, selector: str, value: str) -> str:
+    """Move the pointer onto an element, or to a point, and leave it."""
+
+    if selector:
+        _locate(page, selector).hover(timeout=ACTION_TIMEOUT_MS)
+
+        return f"Moved the mouse onto {selector}."
+
+    spot = _point(value)
+    if spot is None:
+        raise PageProblem(
+            "move needs a selector, or a point as value: \"x,y\" in the "
+            "screenshot's pixels."
+        )
+    page.mouse.move(*spot, steps=MOUSE_STEPS)
+
+    return f"Moved the mouse to {_spot(spot)}."
+
+
+def _act_drag(page, selector: str, value: str) -> str:
+    """Press at one point, move to another, let go: a slider, a canvas,
+    something dragged into place."""
+
+    numbers = re.findall(r"-?\d+(?:\.\d+)?", value or "")
+    if len(numbers) < 4:
+        raise PageProblem(
+            "drag needs two points as value: \"x1,y1 x2,y2\" in the "
+            "screenshot's pixels, from where to where."
+        )
+    start = (float(numbers[0]), float(numbers[1]))
+    end = (float(numbers[2]), float(numbers[3]))
+    page.mouse.move(*start, steps=MOUSE_STEPS)
+    page.mouse.down()
+    page.mouse.move(*end, steps=MOUSE_STEPS)
+    page.mouse.up()
+
+    return f"Dragged from {_spot(start)} to {_spot(end)}."
+
+
 def _act_fill(page, selector: str, value: str) -> str:
     if not value:
         raise PageProblem("fill needs the text to type, in value.")
@@ -645,6 +804,8 @@ def _act_reload(page, selector: str, value: str) -> str:
 
 _ACTIONS = {
     "click": _act_click,
+    "move": _act_move,
+    "drag": _act_drag,
     "fill": _act_fill,
     "press": _act_press,
     "hover": _act_hover,
diff --git a/flash/theme.py b/flash/theme.py
index 7d9d0fe..51b842c 100644
--- a/flash/theme.py
+++ b/flash/theme.py
@@ -329,6 +329,26 @@ def tool_file(path: str) -> bool:
     return True
 
 
+def tool_browser(
+    path: str, *, run: str, url: str, title: str = "", note: str = "",
+) -> bool:
+    """Hand whoever is drawing a picture of the agent's browser as it
+    stands: one frame of RUN, a page opened and acted on in turn, taken
+    after NOTE, the action that got it there.
+
+    True when something took it: the web UI, which shows the browser
+    live beside the chat. False in the terminal, which has no picture.
+    """
+
+    sink = _sink()
+    if sink is None:
+        return False
+    sink("browser", json.dumps({
+        "path": path, "run": run, "url": url, "title": title, "note": note,
+    }), "")
+    return True
+
+
 def tool_document(path: str, comments: list[dict]) -> bool:
     """Hand a document to whoever is drawing, with the agent's comments
     on it: each a quote from the document and a note about it.
diff --git a/flash/tools.py b/flash/tools.py
index 90c7ecd..b4edba0 100644
--- a/flash/tools.py
+++ b/flash/tools.py
@@ -15,6 +15,7 @@
 import threading
 import time
 import urllib.error
+import urllib.parse
 import urllib.request
 from datetime import datetime
 from html.parser import HTMLParser
@@ -56,10 +57,12 @@
     ELLIPSIS,
     ERROR,
     WARN,
+    capturing,
     console,
     glimmer,
     plural,
     remote_answer,
+    tool_browser,
     tool_diff,
     tool_document,
     tool_file,
@@ -2580,6 +2583,31 @@ def send_document(
 MAX_PAGE_PROBLEMS = 5
 
 _screenshot_count = 0
+# Each page opened, and each one-off screenshot, is a run of its own: the
+# web UI shows one live browser per run, its frames in order. Random, not
+# counted, so a chat that outlives a restart never mixes two runs up.
+_browser_run = ""
+
+
+def _new_browser_run() -> None:
+    global _browser_run
+    _browser_run = os.urandom(4).hex()
+
+
+def _show_browser(path: Path, url: str, title: str, note: str) -> None:
+    """Show the user the frame just taken, where there is a screen for it."""
+
+    tool_browser(str(path), run=_browser_run, url=url, title=title,
+                 note=note)
+
+
+def _mouse_point(value: Any) -> Optional[tuple[float, float]]:
+    """A point the model gave for the mouse, as "x,y", or None."""
+
+    numbers = re.findall(r"-?\d+(?:\.\d+)?", str(value or ""))
+    if len(numbers) < 2:
+        return None
+    return float(numbers[0]), float(numbers[1])
 
 
 def _clamp(value: Any, low: int, high: int, fallback: int) -> int:
@@ -2604,6 +2632,7 @@ def screenshot(
     height: Any = DEFAULT_SCREENSHOT_HEIGHT,
     full_page: Any = False,
     wait_ms: Any = DEFAULT_SCREENSHOT_WAIT_MS,
+    mouse: Any = "",
 ) -> str:
     """Render a page in a headless browser and attach the picture."""
 
@@ -2620,6 +2649,9 @@ def screenshot(
     shape = f"{view_width}x{view_height}"
     if whole_page:
         shape += " full page"
+    pointer = _mouse_point(mouse)
+    if pointer is not None:
+        shape += f", mouse at {pointer[0]:g},{pointer[1]:g}"
     tool_line(f"Screenshot({target}, {shape})")
 
     url, why = resolve_target(target)
@@ -2647,6 +2679,7 @@ def screenshot(
         height=view_height,
         full_page=whole_page,
         wait_ms=settle_ms,
+        mouse=pointer,
     )
 
     if why:
@@ -2659,6 +2692,8 @@ def screenshot(
 
     kilobytes = max(1, round(len(data) / 1024))
     tool_result(f"{shape} ({kilobytes} KB) {out.name}")
+    _new_browser_run()
+    _show_browser(out, url, "", f"Screenshot at {shape}")
 
     if problems:
         for problem in problems[:MAX_PAGE_PROBLEMS]:
@@ -2686,7 +2721,9 @@ def screenshot(
     return result
 
 
-def _page_report(headline: str, *, full_page: bool = False) -> str:
+def _page_report(
+    headline: str, *, full_page: bool = False, step: str = "",
+) -> str:
     """Show the model the page it just acted on.
 
     Every open_page and interact call ends here, because an action the
@@ -2703,28 +2740,33 @@ def _page_report(headline: str, *, full_page: bool = False) -> str:
     if url:
         lines.append(f"Page: {title or 'untitled'} - {url}")
 
-    if model_sees_images(OLLAMA_HOST, MODEL_NAME):
+    sees = model_sees_images(OLLAMA_HOST, MODEL_NAME)
+    # The picture is for the model when it has eyes, and for the user
+    # whenever there is a screen beside the chat to show the browser on.
+    if sees or capturing():
         _screenshot_count += 1
         out = Path(SCRATCH_DIR) / f"page-{_screenshot_count}.png"
         why = page_snapshot(out, full_page=bool(full_page))
+        if not why:
+            _show_browser(out, url, title, step or headline.split("\n")[0])
 
-        if why:
-            lines.append(f"No screenshot of the page: {why}")
-            tool_result(why, style=WARN)
-        else:
-            data = out.read_bytes()
-            _pending_images.append(data)
-            kilobytes = max(1, round(len(data) / 1024))
-            tool_result(f"{out.name} ({kilobytes} KB)")
-            lines.append(
-                "A screenshot of the page as it stands is attached to this "
-                "tool result, so judge it from what you can see there."
-            )
-    else:
+    if not sees:
         lines.append(
             f"The active model ({MODEL_NAME}) has no vision, so there is no "
             "screenshot. Work from the element list and from eval."
         )
+    elif why:
+        lines.append(f"No screenshot of the page: {why}")
+        tool_result(why, style=WARN)
+    else:
+        data = out.read_bytes()
+        _pending_images.append(data)
+        kilobytes = max(1, round(len(data) / 1024))
+        tool_result(f"{out.name} ({kilobytes} KB)")
+        lines.append(
+            "A screenshot of the page as it stands is attached to this "
+            "tool result, so judge it from what you can see there."
+        )
 
     found, why = page_elements()
     if why:
@@ -2792,10 +2834,17 @@ def open_page(
         tool_result(result, style=ERROR)
         return result
 
+    _new_browser_run()
     return _page_report(
-        f"Opened {url} at {shape}. The browser stays open, so use the "
-        "interact tool to click, type, or run JavaScript on this page, and "
-        "close it when you are done."
+        step=(
+            f"Opened {Path(urllib.parse.urlparse(url).path).name or url} "
+            f"at {shape}"
+        ),
+        headline=(
+            f"Opened {url} at {shape}. The browser stays open, so use the "
+            "interact tool to click, type, or run JavaScript on this page, "
+            "and close it when you are done."
+        ),
     )
 
 
@@ -3402,6 +3451,15 @@ def interact(
                         "minimum": 0,
                         "maximum": MAX_SCREENSHOT_WAIT_MS,
                     },
+                    "mouse": {
+                        "type": "string",
+                        "description": (
+                            "Optional point to rest the mouse on before "
+                            "the picture, as \"x,y\" in the viewport's "
+                            "pixels, to see a hover state. The pointer "
+                            "shows in the picture as an orange arrow."
+                        ),
+                    },
                 },
                 "required": ["target"],
             },
@@ -3474,12 +3532,15 @@ def interact(
                 "Do one thing to the page open_page opened, then look at "
                 "the result: click a button, fill a field, press a key, "
                 "choose an option, scroll, wait for something to appear, "
-                "or run JavaScript against the live page. The page keeps "
-                "its state between calls, so work through a flow one call "
-                "at a time. Every call reports where the page is now, its "
-                "numbered elements, and the errors it threw, with a "
-                "screenshot attached, so this is how you debug what a page "
-                "actually does rather than what its source says."
+                "or run JavaScript against the live page. The mouse can "
+                "also move, click, and drag at points in the screenshot, "
+                "for what no selector names, such as a canvas or a map; "
+                "the pointer shows in each screenshot as an orange arrow. "
+                "The page keeps its state between calls, so work through a "
+                "flow one call at a time. Every call reports where the page "
+                "is now, its numbered elements, and the errors it threw, "
+                "with a screenshot attached, so this is how you debug what "
+                "a page actually does rather than what its source says."
             ),
             "parameters": {
                 "type": "object",
@@ -3487,9 +3548,13 @@ def interact(
                     "action": {
                         "type": "string",
                         "description": (
-                            "What to do: 'click', 'fill' (type value into "
-                            "a field), 'press' (send a key such as Enter or "
-                            "Tab), 'hover', 'select' (choose value in a "
+                            "What to do: 'click' (an element, or with no "
+                            "selector the point \"x,y\" in value), 'move' "
+                            "(the mouse onto an element or to a point, and "
+                            "leave it there), 'drag' (value \"x1,y1 "
+                            "x2,y2\"), 'fill' (type value into a field), "
+                            "'press' (send a key such as Enter or Tab), "
+                            "'hover', 'select' (choose value in a "
                             "dropdown), 'scroll', 'wait', 'eval' (run the "
                             "JavaScript in value and return its result), "
                             "'back', 'reload', or 'close' (shut the "
@@ -3514,8 +3579,10 @@ def interact(
                         "description": (
                             "The text to type for fill, the key for press, "
                             "the option for select, the JavaScript for "
-                            "eval, or 'top', 'bottom', or a number of "
-                            "pixels for scroll."
+                            "eval, 'top', 'bottom', or a number of pixels "
+                            "for scroll, or a point for click, move, and "
+                            "drag, in the screenshot's pixels from its "
+                            "top-left corner."
                         ),
                     },
                     "wait_ms": {
diff --git a/flash/web.py b/flash/web.py
index f8c07f8..1a4fcf5 100644
--- a/flash/web.py
+++ b/flash/web.py
@@ -304,7 +304,7 @@ class Ask:
 # The rest (tokens, status) only matter to a page that is watching.
 KEPT = {
     "user", "assistant", "tool", "result", "diff", "ask", "answered",
-    "error", "stats", "note", "thought", "file", "plan",
+    "error", "stats", "note", "thought", "file", "plan", "browser",
 }
 
 
@@ -1274,6 +1274,20 @@ def sink(kind: str, text: str, style: str) -> None:
             session.emit(chat, {"type": "diff", "text": text})
         elif kind == "plan":
             session.emit(chat, {"type": "plan", "steps": json.loads(text)})
+        elif kind == "browser":
+            # A frame of the agent's browser: kept like any file shown,
+            # so the chat still has it after a restart.
+            shown = json.loads(text)
+            try:
+                kept = workspace.keep_file(shown["path"])
+            except (workspace.WorkspaceError, OSError):
+                return
+            session.emit(chat, {
+                "type": "browser", **kept, "run": str(shown["run"]),
+                "url": str(shown.get("url") or ""),
+                "title": str(shown.get("title") or ""),
+                "note": str(shown.get("note") or ""),
+            })
         elif kind in ("file", "document"):
             shown = json.loads(text) if kind == "document" else {"path": text}
             try:
diff --git a/flash/web/index.html b/flash/web/index.html
index ea2f311..d7419d5 100644
--- a/flash/web/index.html
+++ b/flash/web/index.html
@@ -6,9 +6,6 @@
 <meta name="referrer" content="no-referrer">
 <meta name="theme-color" content="#262624">
 <title>Flash</title>
-<!-- The Flash cursor is on before the first paint, or the system arrow
-     shows until the page's script runs. -->
-<script>try { if (localStorage.getItem("flash-cursor") === "flash") document.documentElement.classList.add("flash-cursor"); } catch (_) { /* per viewer only */ }</script>
 <link rel="icon" type="image/svg+xml" href="/static/logo-icon.svg">
 <style>
 @font-face {
@@ -86,17 +83,7 @@
   -moz-osx-font-smoothing: grayscale;
   text-rendering: optimizeLegibility;
 }
-button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: var(--pointer, pointer); }
-/* The Flash cursor, from Settings: the arrow at the heart of the Cursor
-   logo, turned to point up and left, in Flash orange. Over something to
-   click it deepens a shade; text fields keep their I-beam. */
-html.flash-cursor {
-  --arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 32 32'%3E%3Cfilter id='s' x='-0.2' y='-0.2' width='1.4' height='1.4'%3E%3CfeDropShadow dx='0' dy='1' stdDeviation='0.9' flood-opacity='0.35'/%3E%3C/filter%3E%3Cpath filter='url(%23s)' d='M4 3 23.7 18.2 13.2 20.4 6.1 28.4Z' fill='%23d97757' stroke='white' stroke-width='1.8' stroke-linejoin='round' paint-order='stroke'/%3E%3C/svg%3E") 3 2, default;
-  --pointer: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 32 32'%3E%3Cfilter id='s' x='-0.2' y='-0.2' width='1.4' height='1.4'%3E%3CfeDropShadow dx='0' dy='1' stdDeviation='0.9' flood-opacity='0.35'/%3E%3C/filter%3E%3Cpath filter='url(%23s)' d='M4 3 23.7 18.2 13.2 20.4 6.1 28.4Z' fill='%23b9532f' stroke='white' stroke-width='1.8' stroke-linejoin='round' paint-order='stroke'/%3E%3C/svg%3E") 3 2, pointer;
-  cursor: var(--arrow);
-}
-html.flash-cursor a[href], html.flash-cursor label, html.flash-cursor summary, html.flash-cursor select { cursor: var(--pointer); }
-html.flash-cursor :is(input:not([type="checkbox"]):not([type="radio"]):not([type="range"]), textarea, [contenteditable="true"], [contenteditable="plaintext-only"]) { cursor: text; }
+button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
 svg.i { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
 :focus { outline: none; }
 :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }
@@ -476,7 +463,7 @@
 body.voice-on .shell, body.voice-on #suggestions, body.voice-on #pending { display: none !important; }
 #voice { display: flex; align-items: center; gap: 16px; padding: 14px 14px 14px 16px; border: 1px solid var(--border-strong); border-radius: 22px; background: var(--surface); box-shadow: var(--composer-shadow); animation: pop 0.2s var(--ease); }
 #voice[hidden] { display: none; }
-.voice-orb { --lvl: 0; position: relative; flex: none; width: 58px; height: 58px; border-radius: 50%; cursor: var(--pointer, pointer);
+.voice-orb { --lvl: 0; position: relative; flex: none; width: 58px; height: 58px; border-radius: 50%; cursor: pointer;
   background: radial-gradient(circle at 34% 30%, #ffe1bd 0%, #f0a36f 30%, var(--accent) 62%, color-mix(in srgb, var(--accent) 55%, #000) 100%);
   box-shadow: 0 0 calc(8px + var(--lvl) * 44px) color-mix(in srgb, var(--accent) 55%, transparent);
   transform: scale(calc(1 + var(--lvl) * 0.22)); transition: transform 0.08s linear, box-shadow 0.08s linear, filter 0.3s; }
@@ -510,7 +497,7 @@
 .vm-what small { font: 12px var(--mono); color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .vm-act { flex: none; display: flex; align-items: center; gap: 6px; }
 .vm-act .btn.small { padding: 5px 12px; font-size: 13px; }
-.vm-act .btn:disabled { opacity: 0.5; cursor: var(--arrow, default); }
+.vm-act .btn:disabled { opacity: 0.5; cursor: default; }
 .vm-tag { font-size: 12px; font-weight: 500; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 3px 9px; border-radius: 999px; }
 .vm-progress { font: 12.5px var(--mono); color: var(--text-2); }
 .vm-row.current .vm-what b { color: var(--text); }
@@ -568,7 +555,7 @@
 /* What goes with the next message, above the box. */
 #tray { display: flex; flex-wrap: wrap; gap: 8px; margin: -2px 0 12px; }
 #tray[hidden] { display: none; }
-.tray-item { position: relative; height: 64px; border-radius: 12px; border: 1px solid var(--border); background: var(--hover); animation: bubble 0.3s var(--spring) both; cursor: var(--arrow, default); }
+.tray-item { position: relative; height: 64px; border-radius: 12px; border: 1px solid var(--border); background: var(--hover); animation: bubble 0.3s var(--spring) both; cursor: default; }
 .tray-item.shot { width: 64px; overflow: hidden; }
 .tray-item.shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
 .tray-item.doc { display: flex; align-items: center; gap: 10px; max-width: 240px; padding: 0 30px 0 10px; }
@@ -624,7 +611,7 @@
 }
 #send svg { width: 17px; height: 17px; stroke-width: 2.2; }
 #send:active { transform: scale(0.94); }
-#send:disabled { opacity: 0.35; cursor: var(--arrow, default); }
+#send:disabled { opacity: 0.35; cursor: default; }
 #send.stop { background: var(--invert-bg); color: var(--invert-text); }
 #send.stop svg { width: 13px; height: 13px; }
 .fine { text-align: center; font-size: 12px; color: var(--text-3); margin-top: 10px; }
@@ -911,8 +898,8 @@
 .switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); transition: transform 0.28s var(--spring); }
 .setting-row[aria-checked="true"] .switch { background: var(--accent); }
 .setting-row[aria-checked="true"] .switch::after { transform: translateX(16px); }
-.setting-row.static { cursor: var(--arrow, default); }
-.setting-row[disabled] { opacity: 0.6; cursor: var(--arrow, default); }
+.setting-row.static { cursor: default; }
+.setting-row[disabled] { opacity: 0.6; cursor: default; }
 .lan-warn { font-size: 13px !important; color: var(--text-3); margin-top: 10px !important; }
 #phone .dialog-buttons { justify-content: center; margin-top: 16px; }
 .setting-row .side { flex: none; display: flex; align-items: center; }
@@ -920,7 +907,7 @@
 @keyframes spin { to { transform: rotate(360deg); } }
 .update-extra { max-width: 620px; margin-top: 10px; }
 .update-extra .note { font: 12.5px/1.55 var(--mono); color: var(--del); white-space: pre-wrap; margin: 0 0 8px; }
-.update-log summary { cursor: var(--pointer, pointer); font-size: 12.5px; color: var(--text-3); padding: 4px 2px; }
+.update-log summary { cursor: pointer; font-size: 12.5px; color: var(--text-3); padding: 4px 2px; }
 .update-log pre { margin: 6px 0 0; max-height: 220px; overflow: auto; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--code-bg); font: 11.5px/1.5 var(--mono); color: var(--text-2); white-space: pre-wrap; }
 #settings-btn { position: relative; }
 #settings-btn.has-update::after { content: ""; position: absolute; left: 25px; top: 7px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 2px var(--side-bg, var(--bg)); animation: pop 0.3s var(--spring) both; }
@@ -1042,7 +1029,7 @@
 /* Folder suggestions, hanging under the field that asked for them. */
 .suggest { position: fixed; z-index: 50; max-height: 248px; overflow-y: auto; padding: 5px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 12px; box-shadow: var(--shadow); animation: pop 0.14s cubic-bezier(0.2, 0, 0, 1); }
 .suggest[hidden] { display: none; }
-.suggest-row { display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: 8px; font: 13.5px var(--mono); color: var(--text-3); cursor: var(--pointer, pointer); white-space: nowrap; overflow: hidden; }
+.suggest-row { display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: 8px; font: 13.5px var(--mono); color: var(--text-3); cursor: pointer; white-space: nowrap; overflow: hidden; }
 .suggest-row svg { width: 15px; height: 15px; flex: none; }
 .suggest-row .path { display: flex; min-width: 0; }
 .suggest-row .where { flex: none; }
@@ -1089,6 +1076,34 @@
 .attachment .meta { font-size: 12.5px; color: var(--text-3); }
 .attachment .chev svg { width: 16px; height: 16px; color: var(--text-3); }
 
+/* The agent's browser: a window onto its newest step in the chat, and
+   the whole run, step by step, in the panel. */
+.browser-card { display: flex; flex-direction: column; width: min(440px, 100%); padding: 0; border-radius: 14px; border: 1px solid var(--border); background: var(--surface); overflow: hidden; text-align: left; transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease); animation: rise 0.28s var(--ease) both; }
+.browser-card:hover { border-color: var(--border-strong); }
+.browser-card.open { border-color: var(--accent); }
+.browser-card .shot { display: block; aspect-ratio: 16 / 9; background: var(--code-bg); border-bottom: 1px solid var(--border); overflow: hidden; }
+.browser-card .shot img { width: 100%; height: 100%; object-fit: cover; object-position: top left; display: block; }
+.browser-card .bar { display: flex; align-items: center; gap: 10px; padding: 9px 12px; }
+.browser-card .globe svg { width: 16px; height: 16px; color: var(--accent); display: block; }
+.browser-card .info { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
+.browser-card .name { font-weight: 500; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.browser-card .meta { font-size: 12.5px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.browser-card .chev svg { width: 16px; height: 16px; color: var(--text-3); display: block; }
+.browser-view { position: absolute; inset: 0; display: flex; flex-direction: column; background: var(--code-bg); }
+.browser-bar { display: flex; align-items: center; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--border); background: var(--surface); }
+.browser-bar .icon-btn { width: 30px; height: 30px; }
+.browser-bar [data-prev] svg { transform: scaleX(-1); }
+.browser-bar .icon-btn:disabled { opacity: 0.35; cursor: default; }
+.browser-bar .url { flex: 1; min-width: 0; margin-left: 4px; padding: 6px 12px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); font: 12.5px var(--mono); color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.browser-bar .live { display: inline-flex; align-items: center; gap: 6px; margin-left: 6px; font-size: 12px; font-weight: 600; color: var(--accent); }
+.browser-bar .live[hidden] { display: none; }
+.browser-bar .live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse-dot 1.4s var(--ease) infinite; }
+@keyframes pulse-dot { 50% { opacity: 0.35; } }
+.browser-shot { flex: 1; min-height: 0; overflow: auto; padding: 14px; }
+.browser-shot img { display: block; width: 100%; height: auto; border-radius: 8px; box-shadow: var(--shadow); background: #fff; }
+.browser-step { padding: 9px 14px; border-top: 1px solid var(--border); background: var(--surface); font-size: 13px; color: var(--text-2); }
+.browser-step:empty { display: none; }
+
 #viewer {
   flex: none; width: 0; overflow: hidden; position: relative;
   border-left: 1px solid transparent;
@@ -1206,7 +1221,7 @@
 .doc-tool.t-italic { font-style: italic; font-family: Georgia, serif; }
 .doc-tool.t-underline { text-decoration: underline; text-underline-offset: 3px; }
 .doc-tool.t-strikeThrough { text-decoration: line-through; }
-.doc-block { height: 30px; padding: 0 26px 0 9px; margin-right: 4px; border-radius: 7px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: 13px var(--sans); cursor: var(--pointer, pointer); }
+.doc-block { height: 30px; padding: 0 26px 0 9px; margin-right: 4px; border-radius: 7px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: 13px var(--sans); cursor: pointer; }
 .doc-editable { outline: 0; caret-color: var(--accent); cursor: text; }
 .doc-editable:empty::before { content: "Start writing"; color: var(--text-3); }
 .doc-editable u, .doc u { text-underline-offset: 3px; }
@@ -1276,7 +1291,7 @@
 #palette-input { flex: 1; height: 54px; border: 0; outline: 0; background: transparent; color: var(--text); font: 16px var(--sans); }
 #palette-input::placeholder { color: var(--text-3); font: 16px var(--sans); }
 #palette-list { max-height: 52vh; overflow-y: auto; padding: 6px; }
-.row { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 10px; cursor: var(--pointer, pointer); font-size: 14px; color: var(--text-2); }
+.row { display: flex; align-items: center; gap: 12px; padding: 9px 12px; border-radius: 10px; cursor: pointer; font-size: 14px; color: var(--text-2); }
 .row .group { font-size: 12px; color: var(--text-3); width: 44px; flex: none; }
 .row .label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .row .keys { display: none; gap: 4px; color: var(--text-3); }
@@ -2078,11 +2093,104 @@
   return card;
 }
 
+// ---------------------------------------------------------------------------
+// The agent's browser. Every page it opens is a run; every step in it, a
+// frame, a picture taken after the step, with the Flash cursor where the
+// agent's pointer was. A run is one card in the chat, at its newest
+// frame, and the panel plays it live beside the chat as it goes.
+
+const browserFrames = (run) => ((chats.get(current) || { log: [] }).log).filter((e) => e.type === "browser" && e.run === run);
+const hostOf = (url) => { try { const u = new URL(url); return u.protocol === "file:" ? u.pathname.split("/").pop() : u.host; } catch (_) { return url; } };
+
+function browserCard(entry) {
+  const frames = browserFrames(entry.run);
+  const card = el("button", "block browser-card");
+  card.type = "button";
+  card.dataset.run = entry.run;
+  card.innerHTML = `<span class="shot"><img alt=""></span><span class="bar"><span class="globe">${icon("globe")}</span><span class="info"><span class="name"></span><span class="meta"></span></span><span class="chev">${icon("chevRight")}</span></span>`;
+  card.querySelector("img").src = fileUrl(entry);
+  card.querySelector(".name").textContent = entry.title || hostOf(entry.url) || "Browser";
+  const steps = frames.length;
+  card.querySelector(".meta").textContent = [hostOf(entry.url), steps > 1 ? `${steps} steps` : "", entry.note].filter(Boolean).join(" · ");
+  card.title = entry.url;
+  card.onclick = () => openBrowser(entry.run);
+  return card;
+}
+
+// One card a run: a newer frame replaces it, at the newer place.
+function drawBrowserFrame(entry) {
+  messagesEl.querySelectorAll(`.browser-card[data-run="${CSS.escape(entry.run)}"]`).forEach((n) => n.remove());
+  messagesEl.appendChild(browserCard(entry));
+  markOpenCard();
+}
+
+// The panel shows frame AT of RUN, the newest when AT is left out, and
+// keeps up with new frames while it is on the newest.
+function openBrowser(run, at) {
+  const frames = browserFrames(run);
+  if (!frames.length) return;
+  const i = Math.max(0, Math.min(frames.length - 1, at ?? frames.length - 1));
+  const frame = frames[i];
+  const viewer = $("#viewer");
+  const already = viewer.classList.contains("open");
+  if (openDoc && openDoc.onSelect) document.removeEventListener("selectionchange", openDoc.onSelect);
+  openDoc = null;
+  viewing = lastViewed = { id: `browser:${run}`, kind: "browser", run, at: i, follow: i === frames.length - 1 };
+  $("#viewer-title").textContent = frame.title || hostOf(frame.url) || "Browser";
+  $("#viewer-size").textContent = `Flash's browser · step ${i + 1} of ${frames.length}`;
+  $("#viewer-kind").innerHTML = icon("globe");
+  $("#viewer-edit").hidden = true;
+  $("#viewer-editing").hidden = true;
+  const download = $("#viewer-download");
+  download.href = fileUrl(frame, true);
+  download.setAttribute("download", `${hostOf(frame.url) || "browser"}-step-${i + 1}.png`);
+  $("#viewer-open").href = /^https?:/i.test(frame.url) ? frame.url : fileUrl(frame);
+  const body = $("#viewer-body");
+  let view = body.querySelector(`.browser-view[data-run="${CSS.escape(run)}"]`);
+  if (!view) {
+    body.textContent = "";
+    view = body.appendChild(el("div", "browser-view", `<div class="browser-bar"><button type="button" class="icon-btn" data-prev aria-label="Previous step" data-tip="Previous step">${icon("chevRight")}</button><button type="button" class="icon-btn" data-next aria-label="Next step" data-tip="Next step">${icon("chevRight")}</button><span class="url"></span><span class="live" hidden>Live</span></div><div class="browser-shot"><img alt=""></div><div class="browser-step"></div>`));
+    view.dataset.run = run;
+  }
+  view.querySelector(".url").textContent = frame.url;
+  view.querySelector(".url").title = frame.url;
+  const img = view.querySelector("img");
+  img.alt = `Step ${i + 1}: ${frame.note || frame.url}`;
+  img.src = fileUrl(frame);
+  view.querySelector(".browser-step").textContent = frame.note || "";
+  const chat = chats.get(current);
+  view.querySelector(".live").hidden = !(viewing.follow && chat && chat.busy);
+  const prev = view.querySelector("[data-prev]"), next = view.querySelector("[data-next]");
+  prev.disabled = i === 0;
+  next.disabled = i === frames.length - 1;
+  prev.onclick = () => openBrowser(run, i - 1);
+  next.onclick = () => openBrowser(run, i + 1);
+  viewer.setAttribute("aria-hidden", "false");
+  if (!already) {
+    void viewer.offsetWidth;
+    viewer.classList.add("open");
+  }
+  markOpenCard();
+}
+
+// A new frame, live: the panel follows it when it is on this run's
+// newest, and a run just started opens in the panel by itself, so the
+// user watches the agent work, unless the panel holds something else or
+// the screen is too narrow to have it beside the chat.
+function browserArrived(entry) {
+  const onRun = viewing && viewing.kind === "browser" && viewing.run === entry.run;
+  if (onRun) { if (viewing.follow) openBrowser(entry.run); return; }
+  const first = browserFrames(entry.run).length === 1;
+  const free = !viewing || viewing.kind === "browser";
+  if (first && free && innerWidth > 800) openBrowser(entry.run);
+}
+
 // The panel: pops out from the right with the file's name and size on top.
 let viewing = null;
 let lastViewed = null;
 
 function openViewer(entry) {
+  if (entry.kind === "browser") { openBrowser(entry.run, entry.at); return; }
   const viewer = $("#viewer");
   const already = viewer.classList.contains("open");
   viewing = lastViewed = entry;
@@ -2876,6 +2984,9 @@
   messagesEl.querySelectorAll(".attachment").forEach((card) => {
     card.style.borderColor = viewing && card.dataset.file === viewing.id ? "var(--accent)" : "";
   });
+  messagesEl.querySelectorAll(".browser-card").forEach((card) => {
+    card.classList.toggle("open", !!viewing && viewing.kind === "browser" && card.dataset.run === viewing.run);
+  });
 }
 
 function statsText(entry) {
@@ -3027,6 +3138,7 @@
     }
     case "tool": ctx.tool = toolCard(entry.label); messagesEl.appendChild(ctx.tool); break;
     case "file": messagesEl.appendChild(attachment(entry)); break;
+    case "browser": drawBrowserFrame(entry); break;
     case "result": if (ctx.tool) addResult(ctx.tool, entry.text, entry.error, entry.warn); break;
     case "diff": if (ctx.tool) addDiff(ctx.tool, entry.text); break;
     case "plan": if (ctx.tool) addPlan(ctx.tool, entry.steps || []); break;
@@ -3062,7 +3174,10 @@
   // A file belongs to its chat: the panel does not follow to another.
   const chatNow = chats.get(current);
   const files = chatNow ? chatNow.log.filter((e) => e.type === "file") : [];
-  if (viewing && !files.some((f) => f.id === viewing.id)) closeViewer();
+  const stays = viewing && (viewing.kind === "browser"
+    ? chatNow && chatNow.log.some((e) => e.type === "browser" && e.run === viewing.run)
+    : files.some((f) => f.id === viewing.id));
+  if (viewing && !stays) closeViewer();
   lastViewed = files.length ? files[files.length - 1] : null;
   document.body.classList.remove("on-page", "page-projects", "page-project", "page-settings", "page-tool");
   const chat = chats.get(current);
@@ -3316,19 +3431,6 @@
   body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Background</h2><p class="settings-sub">A pixel-art scene behind a new chat, the same ones <code>/background</code> shows in the terminal. Add your own as <code>.scene</code> files in <code>~/.flash/backgrounds</code>.</p><div class="scene-grid" role="radiogroup" aria-label="Background"></div>`);
   drawSceneCards(body.querySelector(".scene-grid"));
 
-  body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Cursor</h2>`);
-  const pointer = el("button", "setting-row", `<span class="what"><b>Flash cursor</b><span>An orange arrow in place of the system pointer, in this browser.</span></span><span class="switch" aria-hidden="true"></span>`);
-  pointer.type = "button";
-  pointer.setAttribute("role", "switch");
-  pointer.setAttribute("aria-checked", document.documentElement.classList.contains("flash-cursor"));
-  pointer.onclick = () => {
-    const on = pointer.getAttribute("aria-checked") !== "true";
-    pointer.setAttribute("aria-checked", on);
-    document.documentElement.classList.toggle("flash-cursor", on);
-    savePref("cursor", on ? "flash" : "system");
-  };
-  body.appendChild(pointer);
-
   body.insertAdjacentHTML("beforeend", `<h2 class="settings-section settings-gap">Conversation</h2><p class="settings-sub">What happens when a chat outgrows the model's context window. The last three exchanges always stay word for word.</p>`);
   const row = el("button", "setting-row", `<span class="what"><b>Summarize old messages</b><span>Have the model condense what no longer fits into a summary it keeps reading. Off, the oldest messages are dropped instead, which is faster and never loses detail from the ones kept.</span></span><span class="switch" aria-hidden="true"></span>`);
   row.type = "button";
@@ -5218,6 +5320,8 @@ <h2>Add a host</h2>
       else { chat.partial = ""; chat.thinking = ""; refreshContext(); }
       renderChats();
       if (here) { drawStreaming(); updateSend(); }
+      // The browser in the panel is live only while the turn runs.
+      if (here && viewing && viewing.kind === "browser") openBrowser(viewing.run, viewing.at);
       break;
     case "cleared":
       chat.log = []; chat.partial = ""; chat.thinking = "";
@@ -5241,6 +5345,7 @@ <h2>Add a host</h2>
         drawStreaming();
         updateSend();
         arrived(entry);
+        if (entry.type === "browser") browserArrived(entry);
         if (entry.type === "assistant" && drawCtx.lastReply && !calm.matches) {
           const reply = drawCtx.lastReply;
           reply.classList.add("landed");
diff --git a/tests/test_tools.py b/tests/test_tools.py
index e432ee6..4819e58 100644
--- a/tests/test_tools.py
+++ b/tests/test_tools.py
@@ -1,5 +1,6 @@
 # pylint: disable=C0114,C0115,C0116
 
+import json
 import subprocess  # nosec B404
 
 import pytest
@@ -552,6 +553,132 @@ def test_interact_turns_down_an_action_it_does_not_have(monkeypatch):
     assert "Unknown action" in why  # nosec B101
 
 
+class _FakeMouse:
+    """Records what the agent did with Playwright's mouse."""
+
+    def __init__(self):
+        self.done = []
+
+    def move(self, x, y, steps=1):
+        self.done.append(("move", x, y))
+
+    def click(self, x, y):
+        self.done.append(("click", x, y))
+
+    def down(self):
+        self.done.append(("down",))
+
+    def up(self):
+        self.done.append(("up",))
+
+
+def test_the_mouse_moves_clicks_and_drags_at_points():
+    page = type("Page", (), {})()
+    page.mouse = _FakeMouse()
+
+    moved = browser._act_move(page, "", "120, 48")
+    clicked = browser._act_click(page, "", "(300,200)")
+    dragged = browser._act_drag(page, "", "10,20 to 400,20")
+
+    assert moved == "Moved the mouse to 120,48."  # nosec B101
+    assert clicked == "Clicked at 300,200."  # nosec B101
+    assert dragged == "Dragged from 10,20 to 400,20."  # nosec B101
+    assert page.mouse.done == [  # nosec B101
+        ("move", 120, 48),
+        ("move", 300, 200), ("click", 300, 200),
+        ("move", 10, 20), ("down",), ("move", 400, 20), ("up",),
+    ]
+
+
+def test_the_mouse_says_what_it_needs():
+    page = type("Page", (), {})()
+    page.mouse = _FakeMouse()
+
+    for act, value, needs in (
+        (browser._act_click, "", "click needs a selector"),
+        (browser._act_move, "somewhere", "move needs a selector"),
+        (browser._act_drag, "10,20", "drag needs two points"),
+    ):
+        with pytest.raises(browser.PageProblem, match=needs):
+            act(page, "", value)
+    assert page.mouse.done == []  # nosec B101
+
+
+def test_screenshot_can_rest_the_mouse_first(tmp_path, monkeypatch):
+    take_pending_images()
+    monkeypatch.setattr(tools, "MODEL_NAME", "")
+    monkeypatch.setattr(tools, "SCRATCH_DIR", str(tmp_path))
+    seen = {}
+
+    def capture(_url, out, **kwargs):
+        seen.update(kwargs)
+        out.write_bytes(b"png")
+        return [], ""
+
+    monkeypatch.setattr(tools, "capture", capture)
+    page = tmp_path / "index.html"
+    page.write_text("<button>hi</button>")
+
+    screenshot(str(page))
+    assert seen["mouse"] is None  # nosec B101
+
+    screenshot(str(page), mouse="40,12")
+    assert seen["mouse"] == (40.0, 12.0)  # nosec B101
+
+
+def test_each_step_is_a_frame_of_one_run_for_the_user(tmp_path, monkeypatch):
+    from flash.theme import capture_tool_output
+
+    take_pending_images()
+    _fake_page(monkeypatch, tmp_path)
+    monkeypatch.setattr(tools, "browser_open", lambda *_a, **_k: "")
+    monkeypatch.setattr(
+        tools, "browser_interact", lambda *_a, **_k: ("Clicked at 5,5.", "")
+    )
+    page = tmp_path / "index.html"
+    page.write_text("<h1>hi</h1>")
+    sent = []
+
+    with capture_tool_output(lambda kind, text, _style: sent.append(
+        (kind, text)
+    )):
+        open_page(str(page))
+        tools.interact("click", value="5,5")
+        open_page(str(page))
+
+    frames = [json.loads(text) for kind, text in sent if kind == "browser"]
+    assert [f["note"] for f in frames] == [  # nosec B101
+        "Opened index.html at 1280x800", "Clicked at 5,5.",
+        "Opened index.html at 1280x800",
+    ]
+    # One run a page opened: a second open_page starts another.
+    assert frames[0]["run"] == frames[1]["run"]  # nosec B101
+    assert frames[1]["run"] != frames[2]["run"]  # nosec B101
+    assert frames[0]["title"] == "Demo"  # nosec B101
+
+
+def test_a_blind_model_still_shows_the_user_its_browser(
+    tmp_path, monkeypatch
+):
+    from flash.theme import capture_tool_output
+
+    take_pending_images()
+    _fake_page(monkeypatch, tmp_path)
+    monkeypatch.setattr(tools, "model_sees_images", lambda *_: False)
+    monkeypatch.setattr(tools, "browser_open", lambda *_a, **_k: "")
+    page = tmp_path / "index.html"
+    page.write_text("<h1>hi</h1>")
+    sent = []
+
+    with capture_tool_output(lambda kind, text, _style: sent.append(kind)):
+        result = open_page(str(page))
+
+    assert "browser" in sent  # nosec B101
+    assert "no vision" in result  # nosec B101
+    # The picture is the user's, not the model's.
+    assert take_pending_images() == []  # nosec B101
+
+
 def test_write_tool_appends_instead_of_replacing(tmp_path, monkeypatch):
     monkeypatch.setattr(tools, "NO_COMMAND_CONFIRMATION", True)
     target = tmp_path / "long.py"

From 6664715ab701aafa7b714355574a2d6e907b23eb Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Tue, 29 Sep 2026 18:00:45 +0000
Subject: [PATCH 3/8] feat: let the agent make 3D models and show them in the
 web UI

Add a make_3d_model tool that builds a model out of parts (box, sphere,
cylinder, cone, torus, plane, lathe, extrude, or a raw mesh), each with
a position, rotation, scale, colour, and PBR material, and saves it as
a binary glTF (.glb) written in pure Python. The result reports the
model's overall size and flags one that floats off the ground; a model
with vision also gets a headless render of it, drawn by the same viewer
the user sees. send_3d_model shows an existing .glb, .stl, or .obj.

In the web UI, models open in the side panel in a three.js viewer with
orbit controls, studio lighting, soft shadows, a grid, and buttons to
reset the view, stop the spin, and toggle wireframe. three.js 0.186.1
ships with Flash under flash/web/three, like KaTeX, and loads only the
first time a model is opened. In the terminal, models open in the
system's default 3D viewer.
---
 README.md                    |    6 +-
 flash/model3d.py             |  837 +++++++
 flash/system_prompt.txt      |    2 +-
 flash/tools.py               |  409 +++-
 flash/web.py                 |    7 +
 flash/web/index.html         |  107 +-
 flash/web/three/LICENSE.txt  |   21 +
 flash/web/three/three.min.js | 4225 ++++++++++++++++++++++++++++++++++
 flash/web/three/viewer.js    |  231 ++
 flash/workspace.py           |   19 +-
 pyproject.toml               |    2 +
 tests/test_model3d.py        |  276 +++
 tests/test_web.py            |   50 +
 13 files changed, 6180 insertions(+), 12 deletions(-)
 create mode 100644 flash/model3d.py
 create mode 100644 flash/web/three/LICENSE.txt
 create mode 100644 flash/web/three/three.min.js
 create mode 100644 flash/web/three/viewer.js
 create mode 100644 tests/test_model3d.py

diff --git a/README.md b/README.md
index 44d145e..53c1f72 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ FLASH (**F**ast **L**ocal **A**gent **SH**ell) CLI is an AI-powered command-line
   - Manually execute shell commands using the `!` prefix.
 - **`flash://` Links**: Open Flash from a browser or another app with a prompt ready to go (`flash://?prompt=What+is+Python`).
 - **Image Recognition**: Send a local image to a vision-capable model with `/image <path> [prompt]`, or let the AI open one itself with its `view_image` tool.
+- **3D Models**: Ask for a chair, a vase, or a floor plan and the AI builds it with its `make_3d_model` tool out of boxes, cylinders, spheres, lathed profiles, and extruded outlines, saved as a `.glb` that opens in Blender and every game engine. In the web UI it appears in a 3D viewer beside the chat that you can turn, zoom, and download; a vision model also gets a render of it, so it can see a leg floating off the table and fix it. `send_3d_model` shows an existing `.glb`, `.stl`, or `.obj`.
 - **Page Screenshots**: The AI renders a page it built in a headless browser with its `screenshot` tool and looks at the result, so it can see a broken layout instead of guessing from the HTML.
 - **Page Control**: The AI opens a page with `open_page` and then clicks buttons, fills forms, presses keys, and runs JavaScript on it with `interact`, seeing a fresh screenshot, the page's elements, and its console errors after every step, so it can debug what a page *does*, not just how it looks.
 - **Voice Mode**: `/voice on` downloads a Vosk speech model and a Piper voice, then lets you talk to Flash and hear its replies, with typing still available at any time.
@@ -514,7 +515,10 @@ lists them all:
 **Files** the agent makes come to you. It sends a picture with
 `send_image` and a PDF with `send_pdf`. In the browser, the file slides
 out in a panel on the right, with its name and size across the top and
-buttons to download it or open it in a tab. A card stays in the chat to
+buttons to download it or open it in a tab. A 3D model from
+`make_3d_model` or `send_3d_model` opens there in a viewer: drag to turn
+it, scroll to zoom, right-drag to pan, with buttons to reset the view,
+stop it spinning, and see its wireframe. A card stays in the chat to
 open it again, and `Alt V` shows or hides the panel. Each file is kept
 as a copy in `~/.flash/web/files`, so a chat still shows its files
 after the originals are gone. In the terminal, a PDF opens in your PDF
diff --git a/flash/model3d.py b/flash/model3d.py
new file mode 100644
index 0000000..16fae51
--- /dev/null
+++ b/flash/model3d.py
@@ -0,0 +1,837 @@
+"""3D models the agent builds out of parts.
+
+The model describes a model as a list of parts, each a shape (a box, a
+sphere, a cylinder, a lathed profile, an extruded outline, or a mesh of
+its own) with a place, a turn, a size and a colour. This turns that list
+into a binary glTF (.glb) file: one file that the web UI's viewer, Blender,
+Windows' 3D Viewer and every game engine open as it is.
+
+Pure Python on purpose, with no numpy or trimesh to install, since a
+model of a few hundred parts is a few hundred thousand floats at most.
+"""
+
+import base64
+import json
+import math
+import re
+import struct
+from pathlib import Path
+from typing import Any, Optional
+
+# Every shape is built around the origin, Y up, in metres, as glTF has it.
+SHAPES = (
+    "box", "sphere", "cylinder", "cone", "torus", "plane", "lathe",
+    "extrude", "mesh",
+)
+MODEL_SUFFIXES = (".glb", ".stl", ".obj")
+
+MAX_PARTS = 500
+MAX_TRIANGLES = 2_000_000
+MAX_POINTS = 5000
+MIN_SEGMENTS = 3
+MAX_SEGMENTS = 128
+DEFAULT_SEGMENTS = 32
+
+DEFAULT_COLOR = "#b0b4bb"
+
+# The CSS names a model reaches for first. Anything else is a hex code.
+NAMED_COLORS = {
+    "black": "#000000", "white": "#ffffff", "gray": "#808080",
+    "grey": "#808080", "silver": "#c0c0c0", "red": "#e53935",
+    "darkred": "#8b0000", "orange": "#fb8c00", "yellow": "#fdd835",
+    "gold": "#ffd700", "green": "#43a047", "darkgreen": "#1b5e20",
+    "lime": "#7cb342", "teal": "#00897b", "cyan": "#00bcd4",
+    "blue": "#1e88e5", "navy": "#1a237e", "skyblue": "#87ceeb",
+    "purple": "#8e24aa", "violet": "#ee82ee", "pink": "#f48fb1",
+    "magenta": "#d81b60", "brown": "#795548", "tan": "#d2b48c",
+    "beige": "#f5f5dc", "wood": "#a0522d", "glass": "#cfe8ff",
+}
+_HEX = re.compile(r"^#?([0-9a-f]{3}|[0-9a-f]{6})$", re.IGNORECASE)
+
+_ARRAY_BUFFER = 34962
+_ELEMENT_ARRAY_BUFFER = 34963
+_FLOAT = 5126
+_UNSIGNED_INT = 5125
+
+
+class ModelError(ValueError):
+    """A part the model described that cannot be built, and why."""
+
+
+class Geometry:
+    """Triangles with a normal at every corner, ready to write out."""
+
+    def __init__(self) -> None:
+        self.positions: list[tuple[float, float, float]] = []
+        self.normals: list[tuple[float, float, float]] = []
+        self.indices: list[int] = []
+
+    def vertex(self, p, n) -> int:
+        self.positions.append((float(p[0]), float(p[1]), float(p[2])))
+        self.normals.append(_unit(n))
+        return len(self.positions) - 1
+
+    def triangle(self, a: int, b: int, c: int) -> None:
+        self.indices.extend((a, b, c))
+
+    def flat(self, a, b, c) -> None:
+        """One triangle with its own corners, lit flat."""
+
+        n = _cross(_sub(b, a), _sub(c, a))
+        if _length(n) == 0:
+            return
+        self.triangle(self.vertex(a, n), self.vertex(b, n), self.vertex(c, n))
+
+    @property
+    def triangles(self) -> int:
+        return len(self.indices) // 3
+
+
+# --- Vector arithmetic ----------------------------------------------------
+
+
+def _sub(a, b):
+    return (a[0] - b[0], a[1] - b[1], a[2] - b[2])
+
+
+def _cross(a, b):
+    return (
+        a[1] * b[2] - a[2] * b[1],
+        a[2] * b[0] - a[0] * b[2],
+        a[0] * b[1] - a[1] * b[0],
+    )
+
+
+def _length(v) -> float:
+    return math.sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2])
+
+
+def _unit(v):
+    size = _length(v)
+    if size == 0:
+        return (0.0, 1.0, 0.0)
+    return (v[0] / size, v[1] / size, v[2] / size)
+
+
+# --- Reading what the model gave ------------------------------------------
+
+
+def _number(value: Any, what: str, *, positive: bool = False) -> float:
+    try:
+        number = float(value)
+    except (TypeError, ValueError):
+        raise ModelError(f"{what} must be a number, not {value!r}") from None
+    if not math.isfinite(number):
+        raise ModelError(f"{what} must be a finite number")
+    if positive and number <= 0:
+        raise ModelError(f"{what} must be more than 0, not {number:g}")
+    return number
+
+
+def _vector(value: Any, what: str, fallback, *, positive=False):
+    """Three numbers, from a list or from one number used for all three."""
+
+    if value is None:
+        return fallback
+    if isinstance(value, (int, float, str)):
+        one = _number(value, what, positive=positive)
+        return (one, one, one)
+    if not isinstance(value, (list, tuple)) or len(value) != 3:
+        raise ModelError(f"{what} must be [x, y, z]")
+    return tuple(
+        _number(v, f"{what}[{i}]", positive=positive)
+        for i, v in enumerate(value)
+    )
+
+
+def _points(value: Any, what: str, size: int) -> list[tuple]:
+    if not isinstance(value, (list, tuple)) or not value:
+        raise ModelError(f"{what} must be a list of points")
+    if len(value) > MAX_POINTS:
+        raise ModelError(f"{what} has over {MAX_POINTS} points")
+    points = []
+    for i, point in enumerate(value):
+        if not isinstance(point, (list, tuple)) or len(point) != size:
+            raise ModelError(
+                f"{what}[{i}] must be {size} numbers, not {point!r}"
+            )
+        points.append(tuple(
+            _number(v, f"{what}[{i}]") for v in point
+        ))
+    return points
+
+
+def _segments(value: Any, fallback: int = DEFAULT_SEGMENTS) -> int:
+    try:
+        number = int(value)
+    except (TypeError, ValueError):
+        return fallback
+    return max(MIN_SEGMENTS, min(MAX_SEGMENTS, number))
+
+
+def parse_color(value: Any) -> tuple[float, float, float]:
+    """A colour as sRGB 0..1, from a hex code or a common name."""
+
+    text = str(value or DEFAULT_COLOR).strip().lower().replace(" ", "")
+    text = NAMED_COLORS.get(text, text)
+    found = _HEX.match(text)
+    if not found:
+        raise ModelError(
+            f"color {value!r} is not a hex code like #ff8800 or a common "
+            "colour name"
+        )
+    digits = found.group(1)
+    if len(digits) == 3:
+        digits = "".join(d * 2 for d in digits)
+    return tuple(int(digits[i:i + 2], 16) / 255 for i in (0, 2, 4))
+
+
+def _linear(channel: float) -> float:
+    """sRGB to the linear light glTF stores its colours in."""
+
+    if channel <= 0.04045:
+        return channel / 12.92
+    return ((channel + 0.055) / 1.055) ** 2.4
+
+
+def _fraction(value: Any, what: str, fallback: float) -> float:
+    if value is None:
+        return fallback
+    return max(0.0, min(1.0, _number(value, what)))
+
+
+# --- The shapes -----------------------------------------------------------
+
+
+def _box(part: dict) -> Geometry:
+    sx, sy, sz = _vector(part.get("size"), "size", (1.0, 1.0, 1.0),
+                         positive=True)
+    x, y, z = sx / 2, sy / 2, sz / 2
+    geo = Geometry()
+    # Each face as its normal and two edges, walked counter-clockwise.
+    faces = (
+        ((1, 0, 0), (0, 0, -1), (0, 1, 0)),
+        ((-1, 0, 0), (0, 0, 1), (0, 1, 0)),
+        ((0, 1, 0), (1, 0, 0), (0, 0, -1)),
+        ((0, -1, 0), (1, 0, 0), (0, 0, 1)),
+        ((0, 0, 1), (1, 0, 0), (0, 1, 0)),
+        ((0, 0, -1), (-1, 0, 0), (0, 1, 0)),
+    )
+    half = (x, y, z)
+    for normal, u, v in faces:
+        centre = tuple(normal[i] * half[i] for i in range(3))
+        corners = []
+        for a, b in ((-1, -1), (1, -1), (1, 1), (-1, 1)):
+            corners.append(tuple(
+                centre[i] + a * u[i] * half[i] + b * v[i] * half[i]
+                for i in range(3)
+            ))
+        first = [geo.vertex(c, normal) for c in corners]
+        geo.triangle(first[0], first[1], first[2])
+        geo.triangle(first[0], first[2], first[3])
+    return geo
+
+
+def _plane(part: dict) -> Geometry:
+    """A flat rectangle facing up: a floor, a table top, a sheet."""
+
+    size = part.get("size")
+    if isinstance(size, (list, tuple)) and len(size) == 2:
+        sx = _number(size[0], "size[0]", positive=True)
+        sz = _number(size[1], "size[1]", positive=True)
+    else:
+        sx, _, sz = _vector(size, "size", (1.0, 1.0, 1.0), positive=True)
+    x, z = sx / 2, sz / 2
+    geo = Geometry()
+    up = (0, 1, 0)
+    a, b, c, d = (geo.vertex(p, up) for p in (
+        (-x, 0, z), (x, 0, z), (x, 0, -z), (-x, 0, -z),
+    ))
+    geo.triangle(a, b, c)
+    geo.triangle(a, c, d)
+    return geo
+
+
+def _sphere(part: dict) -> Geometry:
+    radius = _number(part.get("radius", 0.5), "radius", positive=True)
+    around = _segments(part.get("segments"))
+    down = max(MIN_SEGMENTS, around // 2)
+    geo = Geometry()
+    rows = []
+    for j in range(down + 1):
+        polar = math.pi * j / down
+        row = []
+        for i in range(around + 1):
+            azimuth = 2 * math.pi * i / around
+            n = (
+                -math.sin(polar) * math.cos(azimuth),
+                math.cos(polar),
+                math.sin(polar) * math.sin(azimuth),
+            )
+            row.append(geo.vertex(tuple(radius * c for c in n), n))
+        rows.append(row)
+    for j in range(down):
+        for i in range(around):
+            a, b = rows[j][i], rows[j][i + 1]
+            c, d = rows[j + 1][i], rows[j + 1][i + 1]
+            if j != 0:
+                geo.triangle(a, d, b)
+            if j != down - 1:
+                geo.triangle(a, c, d)
+    return geo
+
+
+def _revolve(geo: Geometry, profile: list[tuple], around: int) -> None:
+    """Spin a profile of (radius, y) points around the Y axis, with the
+    normals of the surface it sweeps, smooth all the way round."""
+
+    count = len(profile)
+    # Each point's normal in the profile's plane: across the segments
+    # either side of it, turned outwards.
+    flat_normals = []
+    for k in range(count):
+        before = profile[max(0, k - 1)]
+        after = profile[min(count - 1, k + 1)]
+        dr, dy = after[0] - before[0], after[1] - before[1]
+        flat_normals.append((dy, -dr))
+    rings = []
+    for k, (r, y) in enumerate(profile):
+        nr, ny = flat_normals[k]
+        ring = []
+        for i in range(around + 1):
+            angle = 2 * math.pi * i / around
+            cos, sin = math.cos(angle), -math.sin(angle)
+            ring.append(geo.vertex(
+                (r * cos, y, r * sin), (nr * cos, ny, nr * sin),
+            ))
+        rings.append(ring)
+    for k in range(count - 1):
+        for i in range(around):
+            a, b = rings[k][i], rings[k][i + 1]
+            c, d = rings[k + 1][i], rings[k + 1][i + 1]
+            if profile[k][0] > 0:
+                geo.triangle(a, b, c)
+            if profile[k + 1][0] > 0:
+                geo.triangle(b, d, c)
+
+
+def _cap(geo: Geometry, radius: float, y: float, around: int,
+         up: bool) -> None:
+    if radius <= 0:
+        return
+    normal = (0, 1 if up else -1, 0)
+    centre = geo.vertex((0, y, 0), normal)
+    edge = []
+    for i in range(around + 1):
+        angle = 2 * math.pi * i / around
+        edge.append(geo.vertex(
+            (radius * math.cos(angle), y, -radius * math.sin(angle)), normal,
+        ))
+    for i in range(around):
+        if up:
+            geo.triangle(centre, edge[i], edge[i + 1])
+        else:
+            geo.triangle(centre, edge[i + 1], edge[i])
+
+
+def _cylinder(part: dict, *, cone: bool = False) -> Geometry:
+    height = _number(part.get("height", 1), "height", positive=True)
+    radius = part.get("radius", 0.5)
+    bottom = _number(part.get("radius_bottom", radius), "radius_bottom")
+    top = 0.0 if cone else _number(part.get("radius_top", radius),
+                                   "radius_top")
+    if bottom < 0 or top < 0 or bottom == top == 0:
+        raise ModelError("a cylinder needs a radius more than 0")
+    around = _segments(part.get("segments"))
+    geo = Geometry()
+    h = height / 2
+    _revolve(geo, [(bottom, -h), (top, h)], around)
+    _cap(geo, top, h, around, up=True)
+    _cap(geo, bottom, -h, around, up=False)
+    return geo
+
+
+def _torus(part: dict) -> Geometry:
+    """A ring lying flat, its hole along Y, like a donut on a plate."""
+
+    radius = _number(part.get("radius", 0.5), "radius", positive=True)
+    tube = _number(part.get("tube", radius / 4), "tube", positive=True)
+    around = _segments(part.get("segments"), 48)
+    sides = max(MIN_SEGMENTS, around // 2)
+    geo = Geometry()
+    rows = []
+    for j in range(sides + 1):
+        v = 2 * math.pi * j / sides
+        row = []
+        for i in range(around + 1):
+            u = 2 * math.pi * i / around
+            ring = (math.cos(u), 0.0, -math.sin(u))
+            n = (
+                ring[0] * math.cos(v), math.sin(v), ring[2] * math.cos(v),
+            )
+            p = tuple(radius * ring[k] + tube * n[k] for k in range(3))
+            row.append(geo.vertex(p, n))
+        rows.append(row)
+    for j in range(sides):
+        for i in range(around):
+            a, b = rows[j][i], rows[j][i + 1]
+            c, d = rows[j + 1][i], rows[j + 1][i + 1]
+            geo.triangle(a, b, d)
+            geo.triangle(a, d, c)
+    return geo
+
+
+def _lathe(part: dict) -> Geometry:
+    """A profile of [radius, y] points, bottom to top, spun around Y:
+    a vase, a bottle, a lamp, a chess piece."""
+
+    profile = _points(part.get("points"), "points", 2)
+    if len(profile) < 2:
+        raise ModelError("a lathe needs at least 2 points")
+    if any(r < 0 for r, _ in profile):
+        raise ModelError("a lathe's radii cannot be negative")
+    # Walked the other way, the surface would face inwards.
+    if profile[-1][1] < profile[0][1]:
+        profile.reverse()
+    geo = Geometry()
+    around = _segments(part.get("segments"), 48)
+    _revolve(geo, profile, around)
+    if part.get("closed", True):
+        _cap(geo, profile[-1][0], profile[-1][1], around, up=True)
+        _cap(geo, profile[0][0], profile[0][1], around, up=False)
+    return geo
+
+
+def _signed_area(points: list[tuple]) -> float:
+    area = 0.0
+    for i, (x1, y1) in enumerate(points):
+        x2, y2 = points[(i + 1) % len(points)]
+        area += x1 * y2 - x2 * y1
+    return area / 2
+
+
+def _inside(p, a, b, c) -> bool:
+    def side(p1, p2, p3):
+        return (p1[0] - p3[0]) * (p2[1] - p3[1]) - \
+            (p2[0] - p3[0]) * (p1[1] - p3[1])
+
+    d1, d2, d3 = side(p, a, b), side(p, b, c), side(p, c, a)
+    negative = d1 < 0 or d2 < 0 or d3 < 0
+    positive = d1 > 0 or d2 > 0 or d3 > 0
+    return not (negative and positive)
+
+
+def triangulate(points: list[tuple]) -> list[tuple[int, int, int]]:
+    """Ear-clip a simple polygon, convex or not, counter-clockwise."""
+
+    order = list(range(len(points)))
+    if _signed_area(points) < 0:
+        order.reverse()
+    found = []
+    guard = 0
+    while len(order) > 3 and guard < len(points) ** 2:
+        guard += 1
+        for k in range(len(order)):
+            i, j, m = order[k - 1], order[k], order[(k + 1) % len(order)]
+            a, b, c = points[i], points[j], points[m]
+            turn = (b[0] - a[0]) * (c[1] - a[1]) - \
+                (b[1] - a[1]) * (c[0] - a[0])
+            if turn <= 0:
+                continue
+            if any(_inside(points[o], a, b, c)
+                   for o in order if o not in (i, j, m)):
+                continue
+            found.append((i, j, m))
+            order.pop(k)
+            break
+        else:
+            break
+    if len(order) == 3:
+        found.append(tuple(order))
+    return found
+
+
+def _extrude(part: dict) -> Geometry:
+    """An outline of [x, z] points, seen from above, raised to a height:
+    a floor plan's walls, a letter, a gear, a sign."""
+
+    outline = _points(part.get("points"), "points", 2)
+    if len(outline) < 3:
+        raise ModelError("an extrude needs at least 3 points")
+    if outline[0] == outline[-1]:
+        outline = outline[:-1]
+    height = _number(part.get("height", 1), "height", positive=True)
+    if abs(_signed_area(outline)) == 0:
+        raise ModelError("an extrude's outline has no area")
+    # Walls face out when the outline turns from x towards z.
+    if _signed_area(outline) < 0:
+        outline = outline[::-1]
+    h = height / 2
+    geo = Geometry()
+    ears = triangulate(outline)
+    for i, j, m in ears:
+        a, b, c = outline[i], outline[j], outline[m]
+        geo.flat((a[0], h, a[1]), (c[0], h, c[1]), (b[0], h, b[1]))
+        geo.flat((a[0], -h, a[1]), (b[0], -h, b[1]), (c[0], -h, c[1]))
+    for k, (x1, z1) in enumerate(outline):
+        x2, z2 = outline[(k + 1) % len(outline)]
+        low1, low2 = (x1, -h, z1), (x2, -h, z2)
+        high1, high2 = (x1, h, z1), (x2, h, z2)
+        geo.flat(low1, high1, high2)
+        geo.flat(low1, high2, low2)
+    return geo
+
+
+def _mesh(part: dict) -> Geometry:
+    """Any shape at all: vertices and the faces between them."""
+
+    vertices = _points(part.get("vertices"), "vertices", 3)
+    faces = part.get("faces")
+    if not isinstance(faces, list) or not faces:
+        raise ModelError("a mesh needs faces: lists of vertex indices")
+    if len(faces) > MAX_TRIANGLES:
+        raise ModelError(f"a mesh can have at most {MAX_TRIANGLES} faces")
+    geo = Geometry()
+    for n, face in enumerate(faces):
+        if not isinstance(face, (list, tuple)) or len(face) < 3:
+            raise ModelError(f"faces[{n}] must list 3 or more vertices")
+        try:
+            corners = [vertices[int(i)] for i in face]
+        except (IndexError, TypeError, ValueError):
+            raise ModelError(
+                f"faces[{n}] names a vertex that is not in vertices "
+                f"(there are {len(vertices)}, numbered from 0)"
+            ) from None
+        for k in range(1, len(corners) - 1):
+            geo.flat(corners[0], corners[k], corners[k + 1])
+    return geo
+
+
+_BUILDERS = {
+    "box": _box,
+    "plane": _plane,
+    "sphere": _sphere,
+    "cylinder": _cylinder,
+    "cone": lambda part: _cylinder(part, cone=True),
+    "torus": _torus,
+    "lathe": _lathe,
+    "extrude": _extrude,
+    "mesh": _mesh,
+}
+
+
+# --- Placing the parts ----------------------------------------------------
+
+
+def _quaternion(degrees) -> tuple[float, float, float, float]:
+    """Euler angles in degrees, turned X then Y then Z as three.js does,
+    as the [x, y, z, w] quaternion glTF stores."""
+
+    x, y, z = (math.radians(d) / 2 for d in degrees)
+    cx, sx = math.cos(x), math.sin(x)
+    cy, sy = math.cos(y), math.sin(y)
+    cz, sz = math.cos(z), math.sin(z)
+    return (
+        sx * cy * cz + cx * sy * sz,
+        cx * sy * cz - sx * cy * sz,
+        cx * cy * sz + sx * sy * cz,
+        cx * cy * cz - sx * sy * sz,
+    )
+
+
+def _rotate(q, v):
+    qx, qy, qz, qw = q
+    tx = 2 * (qy * v[2] - qz * v[1])
+    ty = 2 * (qz * v[0] - qx * v[2])
+    tz = 2 * (qx * v[1] - qy * v[0])
+    return (
+        v[0] + qw * tx + (qy * tz - qz * ty),
+        v[1] + qw * ty + (qz * tx - qx * tz),
+        v[2] + qw * tz + (qx * ty - qy * tx),
+    )
+
+
+class Part:
+    """One part, built and placed."""
+
+    def __init__(self, index: int, spec: Any) -> None:
+        if not isinstance(spec, dict):
+            raise ModelError(f"part {index + 1} must be an object")
+        where = f"part {index + 1}"
+        self.name = str(spec.get("name") or "").strip()[:80]
+        if self.name:
+            where += f" ({self.name})"
+        shape = str(spec.get("shape") or "").strip().lower()
+        if shape not in _BUILDERS:
+            raise ModelError(
+                f"{where}: shape must be one of {', '.join(SHAPES)}, not "
+                f"{spec.get('shape')!r}"
+            )
+        self.shape = shape
+        self.name = self.name or f"{shape}-{index + 1}"
+        try:
+            self.geometry = _BUILDERS[shape](spec)
+            self.position = _vector(spec.get("position"), "position",
+                                    (0.0, 0.0, 0.0))
+            turn = _vector(spec.get("rotation"), "rotation", (0.0, 0.0, 0.0))
+            self.rotation = _quaternion(turn)
+            self.scale = _vector(spec.get("scale"), "scale",
+                                 (1.0, 1.0, 1.0), positive=True)
+            self.color = parse_color(spec.get("color"))
+            self.metalness = _fraction(spec.get("metalness"), "metalness",
+                                       0.0)
+            self.roughness = _fraction(spec.get("roughness"), "roughness",
+                                       0.6)
+            self.opacity = _fraction(spec.get("opacity"), "opacity", 1.0)
+            self.emissive = spec.get("emissive")
+            if self.emissive is not None:
+                self.emissive = parse_color(self.emissive)
+        except ModelError as exc:
+            raise ModelError(f"{where}: {exc}") from None
+        if not self.geometry.indices:
+            raise ModelError(f"{where}: its shape came out with no faces")
+        # A mesh's faces run whichever way the model wrote them, so both
+        # sides of them are drawn.
+        self.two_sided = shape in ("mesh", "plane")
+
+    def world_points(self):
+        for p in self.geometry.positions:
+            scaled = (p[0] * self.scale[0], p[1] * self.scale[1],
+                      p[2] * self.scale[2])
+            turned = _rotate(self.rotation, scaled)
+            yield (turned[0] + self.position[0],
+                   turned[1] + self.position[1],
+                   turned[2] + self.position[2])
+
+    def material_key(self) -> tuple:
+        return (self.color, self.metalness, self.roughness, self.opacity,
+                self.emissive, self.two_sided)
+
+
+def build_parts(parts: Any) -> list[Part]:
+    """Every part built, or a ModelError naming the first bad one."""
+
+    if isinstance(parts, str):
+        try:
+            parts = json.loads(parts)
+        except json.JSONDecodeError as exc:
+            raise ModelError(f"parts is not valid JSON: {exc}") from None
+    if isinstance(parts, dict):
+        parts = parts.get("parts", [parts])
+    if not isinstance(parts, list) or not parts:
+        raise ModelError("parts must be a list with at least one part")
+    if len(parts) > MAX_PARTS:
+        raise ModelError(f"a model can have at most {MAX_PARTS} parts")
+    built = [Part(i, spec) for i, spec in enumerate(parts)]
+    triangles = sum(p.geometry.triangles for p in built)
+    if triangles > MAX_TRIANGLES:
+        raise ModelError(
+            f"the model has {triangles} triangles; the limit is "
+            f"{MAX_TRIANGLES}, so use fewer segments or fewer parts"
+        )
+    return built
+
+
+# --- Writing it out -------------------------------------------------------
+
+
+def _pad(data: bytes, filler: bytes) -> bytes:
+    return data + filler * (-len(data) % 4)
+
+
+def to_glb(parts: list[Part], title: str = "") -> bytes:
+    """The parts as one binary glTF 2.0 file."""
+
+    binary = bytearray()
+    views: list[dict] = []
+    accessors: list[dict] = []
+    materials: list[dict] = []
+    material_of: dict[tuple, int] = {}
+    meshes: list[dict] = []
+    nodes: list[dict] = []
+
+    def add(data: bytes, target: int) -> int:
+        views.append({
+            "buffer": 0, "byteOffset": len(binary),
+            "byteLength": len(data), "target": target,
+        })
+        binary.extend(_pad(data, b"\x00"))
+        return len(views) - 1
+
+    for part in parts:
+        geo = part.geometry
+        flat = [c for p in geo.positions for c in p]
+        position = add(struct.pack(f"<{len(flat)}f", *flat), _ARRAY_BUFFER)
+        lows = [min(p[i] for p in geo.positions) for i in range(3)]
+        highs = [max(p[i] for p in geo.positions) for i in range(3)]
+        accessors.append({
+            "bufferView": position, "componentType": _FLOAT,
+            "count": len(geo.positions), "type": "VEC3",
+            "min": lows, "max": highs,
+        })
+        flat = [c for n in geo.normals for c in n]
+        normal = add(struct.pack(f"<{len(flat)}f", *flat), _ARRAY_BUFFER)
+        accessors.append({
+            "bufferView": normal, "componentType": _FLOAT,
+            "count": len(geo.normals), "type": "VEC3",
+        })
+        index = add(struct.pack(f"<{len(geo.indices)}I", *geo.indices),
+                    _ELEMENT_ARRAY_BUFFER)
+        accessors.append({
+            "bufferView": index, "componentType": _UNSIGNED_INT,
+            "count": len(geo.indices), "type": "SCALAR",
+        })
+
+        key = part.material_key()
+        if key not in material_of:
+            material = {
+                "pbrMetallicRoughness": {
+                    "baseColorFactor": [
+                        *(_linear(c) for c in part.color), part.opacity,
+                    ],
+                    "metallicFactor": part.metalness,
+                    "roughnessFactor": part.roughness,
+                },
+            }
+            if part.opacity < 1:
+                material["alphaMode"] = "BLEND"
+            if part.emissive is not None:
+                material["emissiveFactor"] = [
+                    _linear(c) for c in part.emissive
+                ]
+            if part.two_sided:
+                material["doubleSided"] = True
+            material_of[key] = len(materials)
+            materials.append(material)
+
+        meshes.append({
+            "name": part.name,
+            "primitives": [{
+                "attributes": {
+                    "POSITION": len(accessors) - 3,
+                    "NORMAL": len(accessors) - 2,
+                },
+                "indices": len(accessors) - 1,
+                "material": material_of[key],
+            }],
+        })
+        node: dict[str, Any] = {"name": part.name, "mesh": len(meshes) - 1}
+        if any(part.position):
+            node["translation"] = list(part.position)
+        if part.rotation != (0.0, 0.0, 0.0, 1.0):
+            node["rotation"] = list(part.rotation)
+        if part.scale != (1.0, 1.0, 1.0):
+            node["scale"] = list(part.scale)
+        nodes.append(node)
+
+    document: dict[str, Any] = {
+        "asset": {"version": "2.0", "generator": "Flash"},
+        "scene": 0,
+        "scenes": [{"name": title or "Model",
+                    "nodes": list(range(len(nodes)))}],
+        "nodes": nodes,
+        "meshes": meshes,
+        "materials": materials,
+        "accessors": accessors,
+        "bufferViews": views,
+        "buffers": [{"byteLength": len(binary)}],
+    }
+    json_chunk = _pad(json.dumps(document, separators=(",", ":"))
+                      .encode("utf-8"), b" ")
+    bin_chunk = bytes(binary)
+    total = 12 + 8 + len(json_chunk) + 8 + len(bin_chunk)
+    return b"".join((
+        struct.pack("<4sII", b"glTF", 2, total),
+        struct.pack("<I4s", len(json_chunk), b"JSON"), json_chunk,
+        struct.pack("<I4s", len(bin_chunk), b"BIN\x00"), bin_chunk,
+    ))
+
+
+def bounds(parts: list[Part]):
+    """The smallest box around every part, as its low and high corners."""
+
+    low = [math.inf] * 3
+    high = [-math.inf] * 3
+    for part in parts:
+        for p in part.world_points():
+            for i in range(3):
+                low[i] = min(low[i], p[i])
+                high[i] = max(high[i], p[i])
+    return tuple(low), tuple(high)
+
+
+def describe(parts: list[Part]) -> str:
+    """What was built, in numbers the model can check its intent against."""
+
+    low, high = bounds(parts)
+    size = [high[i] - low[i] for i in range(3)]
+    triangles = sum(p.geometry.triangles for p in parts)
+
+    def fmt(values) -> str:
+        return ", ".join(f"{v:.3g}" for v in values)
+
+    lines = [
+        f"{len(parts)} part{'s' if len(parts) != 1 else ''}, "
+        f"{triangles} triangles.",
+        f"Overall size (x, y, z): {fmt(size)}, from ({fmt(low)}) to "
+        f"({fmt(high)}).",
+    ]
+    if low[1] < -1e-6 or low[1] > 1e-3:
+        lines.append(
+            f"Its lowest point is at y = {low[1]:.3g}, so it does not sit "
+            "on the ground (y = 0); move it if it should."
+        )
+    return "\n".join(lines)
+
+
+def is_glb(data: bytes) -> bool:
+    return len(data) >= 12 and data[:4] == b"glTF"
+
+
+def check_model_file(path: Path) -> Optional[str]:
+    """Why a model file cannot be shown, or None when it can."""
+
+    suffix = path.suffix.lower()
+    if suffix not in MODEL_SUFFIXES:
+        return (
+            f"{path.name} is not a .glb, .stl, or .obj file; convert a "
+            ".gltf with its separate files into one .glb first"
+        )
+    try:
+        with open(path, "rb") as handle:
+            head = handle.read(84)
+    except OSError as exc:
+        return f"could not read {path}: {exc}"
+    if suffix == ".glb" and not is_glb(head):
+        return f"{path.name} does not start like a binary glTF file"
+    if not head:
+        return f"{path.name} is empty"
+    return None
+
+
+# --- A picture of it ------------------------------------------------------
+
+
+def preview_page(model: bytes, suffix: str, viewer_js: str,
+                 three_js: str) -> str:
+    """A page that draws the model with the web UI's own viewer, for the
+    headless browser to take a picture of."""
+
+    data = base64.b64encode(model).decode("ascii")
+    # Inlined, a script must not close its own tag early.
+    three_js, viewer_js = (
+        js.replace("</script", "<\\/script") for js in (three_js, viewer_js)
+    )
+    return (
+        "<!doctype html><html><head><meta charset=\"utf-8\"><style>"
+        "html,body{margin:0;height:100%;background:#f4f4f5}"
+        "#view{position:absolute;inset:0}</style>"
+        f"<script>{three_js}</script><script>{viewer_js}</script>"
+        "</head><body><div id=\"view\"></div><script>"
+        f"const bytes=Uint8Array.from(atob(\"{data}\"),c=>c.charCodeAt(0));"
+        "FlashModelView.show(document.getElementById('view'),"
+        f"bytes.buffer,{json.dumps(suffix)},{{light:true,still:true}})"
+        ".then(()=>{document.title='ready'},"
+        "e=>{document.title='failed';console.error(String(e))});"
+        "</script></body></html>"
+    )
diff --git a/flash/system_prompt.txt b/flash/system_prompt.txt
index 7f20172..8cc0da5 100644
--- a/flash/system_prompt.txt
+++ b/flash/system_prompt.txt
@@ -42,7 +42,7 @@ A new file too long for one call is written in pieces: the first with no `append
 == Sending what you make ==
 The user sees only what you send. `view_image` and `screenshot` show a file to you, never to them, and an image in a tool result is one you looked at, not one the user gave you.
 
-When you make an image, a PDF, a web page, or a document for the user, send it the moment it is finished, without being asked: `send_image` for a picture, `send_pdf` for a PDF, `send_html` for a page, `send_document` for Markdown or text. The user can edit a document you send and comment on it; when they do, read the file again before you change it, and answer each comment. When a document you send has unfinished parts, gaps, or open questions, say so in comments on those passages rather than leaving them to be found. Every revision is a new version: send it again each time, and never just view it and describe the change.
+When you make an image, a PDF, a web page, a document, or a 3D model for the user, send it the moment it is finished, without being asked: `send_image` for a picture, `send_pdf` for a PDF, `send_html` for a page, `send_document` for Markdown or text. A 3D model is made and shown in one step with `make_3d_model`; use `send_3d_model` for a .glb, .stl, or .obj file that already exists. The user can edit a document you send and comment on it; when they do, read the file again before you change it, and answer each comment. When a document you send has unfinished parts, gaps, or open questions, say so in comments on those passages rather than leaving them to be found. Every revision is a new version: send it again each time, and never just view it and describe the change.
 
 Check before you send, and check for the exact problem the user reported (overlapping lines, a wrong arrow, cut-off text). If you can still see it, or cannot tell, say so plainly. Never tell the user a problem is fixed because you changed the code meant to fix it: it is fixed when you looked and it was gone.
 
diff --git a/flash/tools.py b/flash/tools.py
index b4edba0..038b09e 100644
--- a/flash/tools.py
+++ b/flash/tools.py
@@ -28,7 +28,15 @@
 from rich.text import Text
 
 from . import agent as subagents
-from . import checkpoint, editor, extensions, learning, plan, skills
+from . import (
+    checkpoint,
+    editor,
+    extensions,
+    learning,
+    model3d,
+    plan,
+    skills,
+)
 from .browser import (
     ACTIONS,
     MAX_ELEMENTS,
@@ -130,6 +138,11 @@
   comments reach you as a message that quotes each passage. To flag
   unfinished work, a gap, or a question in it, pass comments, each
   quoting the words it is about.
+To make a 3D model (an object, a prop, a room, a layout), use the
+  make_3d_model tool: it builds the model from parts such as boxes,
+  cylinders, spheres, lathed profiles, and extruded outlines, saves a
+  .glb, and shows it in a 3D viewer. Use send_3d_model to show a .glb,
+  .stl, or .obj file that already exists.
 When you make an image, PDF, web page, or document for the user, send it
   with the matching tool as soon as it is finished, without being asked:
   that is how they see it.
@@ -2419,6 +2432,7 @@ def send_html(path: str, caption: str = "") -> str:
 
 DOCUMENT_SUFFIXES = (".md", ".markdown", ".txt")
 MAX_DOCUMENT_BYTES = 2 * 1024 * 1024
+MAX_MODEL_BYTES = 50 * 1024 * 1024
 MAX_DOC_COMMENTS = 20
 MAX_QUOTE_CHARS = 300
 MAX_NOTE_CHARS = 1000
@@ -2574,6 +2588,187 @@ def send_document(
     )
 
 
+MODEL_PREVIEW_WIDTH = 900
+MODEL_PREVIEW_HEIGHT = 700
+MODEL_PREVIEW_WAIT_MS = 1500
+_model_count = 0
+
+
+def _model_preview(model_path: Path) -> str:
+    """Draw the model the way the web UI will, and attach the picture
+    for the model to judge. Returns a line for its tool result."""
+
+    global _model_count
+
+    if not model_sees_images(OLLAMA_HOST, MODEL_NAME):
+        return (
+            f"The active model ({MODEL_NAME}) has no vision, so there is "
+            "no picture of it; check the numbers above against what you "
+            "meant to build."
+        )
+
+    web = Path(__file__).parent / "web" / "three"
+    try:
+        page = model3d.preview_page(
+            model_path.read_bytes(), model_path.suffix.lower(),
+            (web / "viewer.js").read_text(encoding="utf-8"),
+            (web / "three.min.js").read_text(encoding="utf-8"),
+        )
+    except OSError as exc:
+        return f"No picture of it: {exc}."
+
+    _model_count += 1
+    html = Path(SCRATCH_DIR) / f"model-{_model_count}.html"
+    out = Path(SCRATCH_DIR) / f"model-{_model_count}.png"
+    html.write_text(page, encoding="utf-8")
+    problems, why = capture(
+        html.resolve().as_uri(), out,
+        width=MODEL_PREVIEW_WIDTH, height=MODEL_PREVIEW_HEIGHT,
+        full_page=False, wait_ms=MODEL_PREVIEW_WAIT_MS,
+    )
+    if why:
+        tool_result(f"No preview: {why}", style=WARN)
+        return f"No picture of it: {why}"
+
+    data = out.read_bytes()
+    _pending_images.append(data)
+    note = (
+        "A picture of it, as the user's viewer first shows it (from the "
+        "front right, above), is attached, so judge the shape from what "
+        "you can see there."
+    )
+    if problems:
+        note += " The viewer reported: " + "; ".join(
+            problems[:MAX_PAGE_PROBLEMS]
+        )
+    return note
+
+
+def _show_model(model_path: Path, label: str) -> str:
+    """Put a model in front of the user. Returns how it went."""
+
+    if tool_file(str(model_path)):
+        tool_result(label)
+        return (
+            "It is on the user's screen beside the chat, in a 3D viewer "
+            "they can turn, zoom, and download it from."
+        )
+
+    problem = _open_with_spinner(model_path)
+    tool_result(label + (f" ({problem})" if problem else ""))
+    console.print(
+        Text(f"{' ' * RESULT_INDENT}{_display_path(model_path)}", style=DIM)
+    )
+    if problem:
+        return (
+            f"Could not open it: {problem}. Its path is on screen; tell "
+            "the user where the file is and that the web UI (flash --web) "
+            "shows 3D models."
+        )
+    return (
+        "It opened in the user's default 3D viewer, with its path on "
+        "screen."
+    )
+
+
+def make_3d_model(
+    path: str, parts: Any, title: str = "", caption: str = "",
+) -> str:
+    """Build a 3D model out of simple parts, save it as a .glb file,
+    and show it to the user."""
+
+    model_path = Path(path).expanduser()
+    if model_path.suffix.lower() != ".glb":
+        model_path = model_path.with_name(model_path.name + ".glb")
+    tool_line(f"Make3DModel({model_path})")
+
+    problem = ""
+    if model_path.is_dir():
+        problem = f"{model_path} is a directory, not a file"
+    elif model_path.exists():
+        try:
+            with open(model_path, "rb") as handle:
+                if not model3d.is_glb(handle.read(12)):
+                    problem = (
+                        f"{model_path.name} already exists and is not a "
+                        ".glb model, so it was left alone; pick another "
+                        "path"
+                    )
+        except OSError as exc:
+            problem = f"could not read {model_path}: {exc}"
+    if problem:
+        result = f"Error: {problem}."
+        tool_result(result, style=ERROR)
+        return result
+
+    try:
+        built = model3d.build_parts(parts)
+        data = model3d.to_glb(built, str(title or "").strip())
+    except model3d.ModelError as exc:
+        result = f"Error: {exc}. Nothing was written."
+        tool_result(result, style=ERROR)
+        return result
+
+    checkpoint.record(model_path)
+    try:
+        model_path.parent.mkdir(parents=True, exist_ok=True)
+        model_path.write_bytes(data)
+    except OSError as exc:
+        result = f"Error: could not write {model_path}: {exc}"
+        tool_result(result, style=ERROR)
+        return result
+
+    kilobytes = max(1, round(len(data) / 1024))
+    note = caption.strip()
+    count = len(built)
+    label = (
+        f"{model_path.name} ({count} part{plural(count)}, {kilobytes} KB)"
+        + (f": {note}" if note else "")
+    )
+    shown = _show_model(model_path, label)
+    return (
+        f"Saved {model_path} ({kilobytes} KB).\n"
+        f"{model3d.describe(built)}\n{shown}\n{_model_preview(model_path)}"
+        "\nTo change it, call make_3d_model again with the whole list "
+        "of parts, changed, and the same path."
+    )
+
+
+def send_3d_model(path: str, caption: str = "") -> str:
+    """Put a 3D model file someone else made in front of the user."""
+
+    tool_line(f"Send3DModel({path})")
+
+    model_path = Path(path).expanduser()
+    size = 0
+    if not model_path.is_file():
+        problem = f"no file at {model_path}"
+    else:
+        problem = model3d.check_model_file(model_path) or ""
+        if not problem:
+            size = model_path.stat().st_size
+            if size > MAX_MODEL_BYTES:
+                problem = (
+                    f"{model_path.name} is {size // (1024 * 1024)} MB; the "
+                    f"limit is {MAX_MODEL_BYTES // (1024 * 1024)} MB"
+                )
+    if problem:
+        result = f"Error: {problem}."
+        tool_result(result, style=ERROR)
+        return result
+
+    kilobytes = max(1, round(size / 1024))
+    note = caption.strip()
+    label = f"{model_path.name} ({kilobytes} KB)" + (
+        f": {note}" if note else ""
+    )
+    shown = _show_model(model_path, label)
+    return (
+        f"Sent {model_path.name} ({kilobytes} KB). {shown}\n"
+        f"{_model_preview(model_path)}"
+    )
+
+
 DEFAULT_SCREENSHOT_WIDTH = 1280
 DEFAULT_SCREENSHOT_HEIGHT = 800
 MIN_SCREENSHOT_SIDE = 200
@@ -3360,6 +3555,216 @@ def interact(
             },
         },
     },
+    {
+        "type": "function",
+        "function": {
+            "name": "make_3d_model",
+            "description": (
+                "Build a 3D model out of parts, save it as a .glb file, "
+                "and show it to the user in a 3D viewer they can turn and "
+                "zoom (beside the chat in the web UI). Use it for any "
+                "object, prop, scene, or layout the user wants to see in "
+                "3D. Y is up, units are metres, and the ground is y = 0, "
+                "so a part rests on it when its position's y is half its "
+                "height. Every shape is centred on its position. Build "
+                "the object from many parts, sized in proportion to the "
+                "real thing. The result gives the model's overall size, "
+                "and a picture of it when you can see images: check both "
+                "and fix what is off. To revise, call again with the "
+                "whole changed list and the same path."
+            ),
+            "parameters": {
+                "type": "object",
+                "properties": {
+                    "path": {
+                        "type": "string",
+                        "description": (
+                            "Where to save it, ending in .glb, such as "
+                            "chair.glb."
+                        ),
+                    },
+                    "parts": {
+                        "type": "array",
+                        "description": "The parts, each one shape.",
+                        "items": {
+                            "type": "object",
+                            "properties": {
+                                "shape": {
+                                    "type": "string",
+                                    "enum": list(model3d.SHAPES),
+                                    "description": (
+                                        "box (size [x,y,z]); sphere "
+                                        "(radius); cylinder (radius, "
+                                        "height, or radius_top and "
+                                        "radius_bottom for a taper); cone "
+                                        "(radius, height, point up); "
+                                        "torus (radius to the tube's "
+                                        "centre, tube; lies flat like a "
+                                        "ring on a table); plane (size "
+                                        "[x,z], facing up); lathe (points "
+                                        "[[radius,y],...] from bottom to "
+                                        "top, spun round the Y axis: "
+                                        "vases, bottles, lamps, chess "
+                                        "pieces); extrude (points "
+                                        "[[x,z],...], an outline seen "
+                                        "from above, raised to height: "
+                                        "walls, letters, gears, "
+                                        "L-shapes); mesh (vertices "
+                                        "[[x,y,z],...] and faces, each a "
+                                        "list of vertex indices from 0)."
+                                    ),
+                                },
+                                "name": {
+                                    "type": "string",
+                                    "description": (
+                                        "What the part is, like "
+                                        "'left front leg'."
+                                    ),
+                                },
+                                "size": {
+                                    "type": "array",
+                                    "items": {"type": "number"},
+                                },
+                                "radius": {"type": "number"},
+                                "radius_top": {"type": "number"},
+                                "radius_bottom": {"type": "number"},
+                                "height": {"type": "number"},
+                                "tube": {"type": "number"},
+                                "points": {
+                                    "type": "array",
+                                    "items": {
+                                        "type": "array",
+                                        "items": {"type": "number"},
+                                    },
+                                },
+                                "vertices": {
+                                    "type": "array",
+                                    "items": {
+                                        "type": "array",
+                                        "items": {"type": "number"},
+                                    },
+                                },
+                                "faces": {
+                                    "type": "array",
+                                    "items": {
+                                        "type": "array",
+                                        "items": {"type": "integer"},
+                                    },
+                                },
+                                "segments": {
+                                    "type": "integer",
+                                    "description": (
+                                        "How smooth a round shape is, "
+                                        "3 to 128. 6 makes a hexagonal "
+                                        "prism of a cylinder."
+                                    ),
+                                },
+                                "position": {
+                                    "type": "array",
+                                    "items": {"type": "number"},
+                                    "description": (
+                                        "[x, y, z] of the shape's centre."
+                                    ),
+                                },
+                                "rotation": {
+                                    "type": "array",
+                                    "items": {"type": "number"},
+                                    "description": (
+                                        "[x, y, z] turns in degrees, "
+                                        "about the shape's centre. "
+                                        "[90, 0, 0] lays a cylinder on "
+                                        "its side along Z; [0, 0, 90] "
+                                        "along X."
+                                    ),
+                                },
+                                "scale": {
+                                    "type": "array",
+                                    "items": {"type": "number"},
+                                    "description": (
+                                        "[x, y, z] stretch, such as a "
+                                        "sphere made an egg."
+                                    ),
+                                },
+                                "color": {
+                                    "type": "string",
+                                    "description": (
+                                        "A hex code like #c0392b, or a "
+                                        "common name."
+                                    ),
+                                },
+                                "metalness": {
+                                    "type": "number",
+                                    "description": "0 (default) to 1.",
+                                },
+                                "roughness": {
+                                    "type": "number",
+                                    "description": (
+                                        "0 (mirror) to 1 (chalk); "
+                                        "default 0.6."
+                                    ),
+                                },
+                                "opacity": {
+                                    "type": "number",
+                                    "description": (
+                                        "1 (default) to 0; below 1 for "
+                                        "glass or water."
+                                    ),
+                                },
+                                "emissive": {
+                                    "type": "string",
+                                    "description": (
+                                        "A colour it glows, for lamps "
+                                        "and screens."
+                                    ),
+                                },
+                            },
+                            "required": ["shape"],
+                        },
+                    },
+                    "title": {
+                        "type": "string",
+                        "description": "Optional name for the model.",
+                    },
+                    "caption": {
+                        "type": "string",
+                        "description": (
+                            "Optional single line shown with it."
+                        ),
+                    },
+                },
+                "required": ["path", "parts"],
+            },
+        },
+    },
+    {
+        "type": "function",
+        "function": {
+            "name": "send_3d_model",
+            "description": (
+                "Show a 3D model file that already exists (.glb, .stl, or "
+                ".obj), such as one a script made or the user has, in a "
+                "3D viewer they can turn and zoom (beside the chat in the "
+                "web UI). For a model you build yourself, use "
+                "make_3d_model, which shows it too."
+            ),
+            "parameters": {
+                "type": "object",
+                "properties": {
+                    "path": {
+                        "type": "string",
+                        "description": "Path to the .glb, .stl, or .obj.",
+                    },
+                    "caption": {
+                        "type": "string",
+                        "description": (
+                            "Optional single line shown with it."
+                        ),
+                    },
+                },
+                "required": ["path"],
+            },
+        },
+    },
     {
         "type": "function",
         "function": {
@@ -3983,6 +4388,8 @@ def interact(
     "send_pdf": send_pdf,
     "send_html": send_html,
     "send_document": send_document,
+    "make_3d_model": make_3d_model,
+    "send_3d_model": send_3d_model,
     "screenshot": screenshot,
     "open_page": open_page,
     "interact": interact,
diff --git a/flash/web.py b/flash/web.py
index 1a4fcf5..506a85c 100644
--- a/flash/web.py
+++ b/flash/web.py
@@ -107,6 +107,13 @@
     if path.is_file() and path.suffix in KATEX_TYPES
 })
 
+# three.js and Flash's viewer on it, which draw the 3D models the agent
+# makes: shipped with Flash too, and loaded only once a model is opened.
+STATIC.update({
+    path.relative_to(WEB_DIR).as_posix(): KATEX_TYPES[path.suffix]
+    for path in sorted((WEB_DIR / "three").glob("*.js"))
+})
+
 # How often an idle event stream says it is still there. Proxies and
 # some browsers drop a stream that has been silent for a minute.
 PING_SECONDS = 15
diff --git a/flash/web/index.html b/flash/web/index.html
index d7419d5..9ac96e2 100644
--- a/flash/web/index.html
+++ b/flash/web/index.html
@@ -1142,6 +1142,18 @@
 #viewer-body .image { position: absolute; inset: 0; overflow: auto; display: grid; place-items: center; padding: 20px; cursor: zoom-in; }
 #viewer-body .image img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 8px; box-shadow: var(--shadow); animation: rise-far 0.45s var(--apple) both; }
 #viewer-body .image.actual { place-items: start; cursor: zoom-out; }
+/* A 3D model: the canvas fills the panel; a few controls float on it. */
+.model-view { position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 35%, var(--surface), var(--code-bg) 75%); }
+.model-view .stage { position: absolute; inset: 0; cursor: grab; }
+.model-view .stage:active { cursor: grabbing; }
+.model-view .model-note { position: absolute; inset: 0; display: grid; place-items: center; padding: 24px; text-align: center; color: var(--text-3); font-size: 13.5px; pointer-events: none; }
+.model-view .model-tools { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; align-items: center; gap: 4px; padding: 4px; border-radius: 12px; background: color-mix(in srgb, var(--surface) 88%, transparent); border: 1px solid var(--border); box-shadow: var(--shadow); backdrop-filter: blur(8px); animation: rise-far 0.45s var(--apple) both; }
+.model-view .model-tools[hidden] { display: none; }
+.model-view .model-tools button { padding: 5px 10px; border-radius: 8px; font-size: 12.5px; color: var(--text-2); white-space: nowrap; }
+.model-view .model-tools button:hover { background: var(--hover); color: var(--text); }
+.model-view .model-tools button[aria-pressed="true"] { background: var(--hover); color: var(--text); }
+.model-view .model-tools .hint { padding: 0 8px; font-size: 12px; color: var(--text-3); white-space: nowrap; }
+@media (max-width: 560px) { .model-view .model-tools .hint { display: none; } }
 
 /* A document, set like a page: a readable column, generous margins. */
 #viewer-body .doc-scroll { position: absolute; inset: 0; overflow: auto; background: var(--bg); display: flex; flex-direction: column; }
@@ -1528,6 +1540,7 @@
   quote: '<path d="M7 7H4.5A1.5 1.5 0 0 0 3 8.5V12h4v5M17 7h-2.5A1.5 1.5 0 0 0 13 8.5V12h4v5"/>',
   link: '<path d="M10 14a4 4 0 0 0 5.7 0l3-3a4 4 0 0 0-5.7-5.7l-1 1M14 10a4 4 0 0 0-5.7 0l-3 3a4 4 0 0 0 5.7 5.7l1-1"/>',
   code: '<path d="m8 7-5 5 5 5M16 7l5 5-5 5"/>',
+  cube: '<path d="M21 16V8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16z"/><path d="M3.3 7 12 12l8.7-5M12 22V12"/>',
   image: '<rect x="3" y="4" width="18" height="16" rx="3"/><circle cx="9" cy="10" r="1.6"/><path d="m21 16-5.5-5.5L6 20"/>',
   server: '<rect x="3" y="4" width="18" height="7" rx="2"/><rect x="3" y="13" width="18" height="7" rx="2"/><path d="M7 7.5h.01M7 16.5h.01"/>',
   more: '<circle cx="5" cy="12" r="1"/><circle cx="12" cy="12" r="1"/><circle cx="19" cy="12" r="1"/>',
@@ -2074,6 +2087,7 @@
 }
 const fileUrl = (entry, download) => `/api/files/${encodeURIComponent(entry.id)}${download ? "?download=1" : ""}`;
 const fileKind = (entry) => (entry.kind === "pdf" ? "PDF" : entry.kind === "html" ? "HTML"
+  : entry.kind === "model" ? "3D model"
   : entry.kind === "doc" ? (/\.txt$/i.test(entry.name) ? "Text" : "Markdown")
   : (entry.mime || "image/").split("/")[1].toUpperCase());
 
@@ -2084,6 +2098,7 @@
   const thumb = entry.kind === "image"
     ? `<img alt="" loading="lazy" src="${fileUrl(entry)}">`
     : entry.kind === "doc" ? `<span class="doc-thumb">${icon("file")}</span>`
+    : entry.kind === "model" ? `<span class="doc-thumb">${icon("cube")}</span>`
     : `<span class="badge">${fileKind(entry)}</span>`;
   card.innerHTML = `<span class="thumb">${thumb}</span><span class="info"><div class="name"></div>` +
     `<div class="meta"></div></span><span class="chev">${icon("chevRight")}</span>`;
@@ -2148,6 +2163,7 @@
   const body = $("#viewer-body");
   let view = body.querySelector(`.browser-view[data-run="${CSS.escape(run)}"]`);
   if (!view) {
+    dropModel();
     body.textContent = "";
     view = body.appendChild(el("div", "browser-view", `<div class="browser-bar"><button type="button" class="icon-btn" data-prev aria-label="Previous step" data-tip="Previous step">${icon("chevRight")}</button><button type="button" class="icon-btn" data-next aria-label="Next step" data-tip="Next step">${icon("chevRight")}</button><span class="url"></span><span class="live" hidden>Live</span></div><div class="browser-shot"><img alt=""></div><div class="browser-step"></div>`));
     view.dataset.run = run;
@@ -2196,7 +2212,7 @@
   viewing = lastViewed = entry;
   $("#viewer-title").textContent = entry.name;
   $("#viewer-size").textContent = `${fileKind(entry)} · ${fileSize(entry.size)}`;
-  $("#viewer-kind").innerHTML = icon({ pdf: "file", html: "globe", doc: "file" }[entry.kind] || "image");
+  $("#viewer-kind").innerHTML = icon({ pdf: "file", html: "globe", doc: "file", model: "cube" }[entry.kind] || "image");
   $("#viewer-edit").hidden = entry.kind !== "doc";
   $("#viewer-editing").hidden = true;
   if (openDoc && openDoc.onSelect) document.removeEventListener("selectionchange", openDoc.onSelect);
@@ -2206,6 +2222,7 @@
   download.setAttribute("download", entry.name);
   $("#viewer-open").href = fileUrl(entry);
   const body = $("#viewer-body");
+  dropModel();
   body.textContent = "";
   if (entry.kind === "html") {
     // Sandboxed twice over: here, and by the header the server sends,
@@ -2222,6 +2239,8 @@
     body.appendChild(frame);
   } else if (entry.kind === "doc") {
     openDocument(entry, body);
+  } else if (entry.kind === "model") {
+    openModel(entry, body);
   } else {
     const holder = el("div", "image");
     const img = el("img");
@@ -2239,6 +2258,84 @@
   markOpenCard();
 }
 
+// ---------------------------------------------------------------------------
+// 3D models: a .glb, .stl or .obj Flash made or found, drawn by three.js
+// in the panel, to turn with a drag, zoom with a scroll, and pan with a
+// right-drag. three.js is big, so it loads the first time a model opens.
+
+let modelView = null;    // the model in the panel: its viewer, to let go of
+let threeLoading = null;
+
+function loadScript(src) {
+  return new Promise((resolve, reject) => {
+    const tag = document.createElement("script");
+    tag.src = src;
+    tag.onload = resolve;
+    tag.onerror = () => { tag.remove(); reject(new Error(`could not load ${src}`)); };
+    document.head.appendChild(tag);
+  });
+}
+
+function loadThree() {
+  if (window.FlashModelView) return Promise.resolve();
+  threeLoading = threeLoading || loadScript("/static/three/three.min.js")
+    .then(() => loadScript("/static/three/viewer.js"))
+    .catch((e) => { threeLoading = null; throw e; });
+  return threeLoading;
+}
+
+// Lets go of the model's GPU memory once the panel shows something else.
+function dropModel() {
+  if (!modelView) return;
+  const gone = modelView;
+  modelView = null;
+  gone.dropped = true;
+  if (gone.handle) gone.handle.dispose();
+}
+
+async function openModel(entry, body) {
+  const view = body.appendChild(el("div", "model-view",
+    `<div class="stage"></div><div class="model-note">Loading the model…</div>` +
+    `<div class="model-tools" hidden><button type="button" data-reset>Reset view</button>` +
+    `<button type="button" data-spin aria-pressed="true">Spin</button>` +
+    `<button type="button" data-wire aria-pressed="false">Wireframe</button>` +
+    `<span class="hint">Drag to turn · scroll to zoom · right-drag to pan</span></div>`));
+  const mine = { entry, handle: null, dropped: false };
+  modelView = mine;
+  const note = view.querySelector(".model-note");
+  const suffix = (/\.[^.]+$/.exec(entry.name) || [".glb"])[0].toLowerCase();
+  try {
+    await loadThree();
+    if (mine.dropped) return;
+    const handle = await FlashModelView.show(view.querySelector(".stage"), fileUrl(entry), suffix);
+    if (mine.dropped) { handle.dispose(); return; }
+    mine.handle = handle;
+  } catch (e) {
+    if (!mine.dropped) note.textContent = `Could not show this model: ${e && e.message ? e.message : e}`;
+    return;
+  }
+  note.remove();
+  const tools = view.querySelector(".model-tools");
+  tools.hidden = false;
+  const press = (button, on) => button.setAttribute("aria-pressed", on ? "true" : "false");
+  tools.querySelector("[data-reset]").onclick = () => mine.handle.reset();
+  const spin = tools.querySelector("[data-spin]");
+  spin.onclick = () => { const on = spin.getAttribute("aria-pressed") !== "true"; press(spin, on); mine.handle.spin(on); };
+  // Grabbing the model stops it spinning; the button says so too.
+  view.querySelector(".stage").addEventListener("pointerdown", () => press(spin, false));
+  const wire = tools.querySelector("[data-wire]");
+  wire.onclick = () => { const on = wire.getAttribute("aria-pressed") !== "true"; press(wire, on); mine.handle.wireframe(on); };
+  const size = modelSize(mine.handle);
+  if (size) $("#viewer-size").textContent = `${fileKind(entry)} · ${fileSize(entry.size)} · ${size}`;
+}
+
+// The model's size, as the panel's subtitle shows it: 1.2 × 0.8 × 0.6 m.
+function modelSize(handle) {
+  if (!handle || !handle.size) return "";
+  const round = (n) => String(n >= 10 ? Math.round(n) : Number(n.toPrecision(2)));
+  return `${handle.size.map(round).join(" × ")} m`;
+}
+
 // ---------------------------------------------------------------------------
 // Documents: Markdown or text Flash sent, read like a page, edited in
 // place, and commented on. Select a passage to comment on it; the
@@ -2969,8 +3066,8 @@
   dropCommentUi();
   if (window.CSS && CSS.highlights) CSS.highlights.delete("doc-comment");
   markOpenCard();
-  // Emptied once it has slid away, so a PDF is not left loaded.
-  setTimeout(() => { if (!viewing) $("#viewer-body").textContent = ""; }, 480);
+  // Emptied once it has slid away, so a PDF or a model is not left loaded.
+  setTimeout(() => { if (!viewing) { dropModel(); $("#viewer-body").textContent = ""; } }, 480);
   return true;
 }
 
@@ -3091,8 +3188,8 @@
       shot.onclick = () => openViewer(f);
       continue;
     }
-    const viewable = f.kind === "pdf";
-    const chip = box.appendChild(el(viewable ? "button" : "div", "doc", `<span class="badge">${icon("file")}</span><span class="words"><span class="name"></span><span class="meta"></span></span>`));
+    const viewable = f.kind === "pdf" || f.kind === "model";
+    const chip = box.appendChild(el(viewable ? "button" : "div", "doc", `<span class="badge">${icon(f.kind === "model" ? "cube" : "file")}</span><span class="words"><span class="name"></span><span class="meta"></span></span>`));
     chip.querySelector(".name").textContent = f.name;
     chip.querySelector(".meta").textContent = `${extOf(f.name)} · ${fileSize(f.size)}`;
     if (viewable) { chip.type = "button"; chip.onclick = () => openViewer(f); }
diff --git a/flash/web/three/LICENSE.txt b/flash/web/three/LICENSE.txt
new file mode 100644
index 0000000..8ada2a5
--- /dev/null
+++ b/flash/web/three/LICENSE.txt
@@ -0,0 +1,21 @@
+The MIT License
+
+Copyright © 2010-2026 three.js authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/flash/web/three/three.min.js b/flash/web/three/three.min.js
new file mode 100644
index 0000000..727277d
--- /dev/null
+++ b/flash/web/three/three.min.js
@@ -0,0 +1,4225 @@
+/* three.js 0.186.1 (MIT, see LICENSE.txt): core, OrbitControls, GLTFLoader, STLLoader, OBJLoader and RoomEnvironment, bundled as window.FlashThree for Flash's 3D model viewer. */
+(()=>{var T_=Object.defineProperty;var A_=(r,e)=>{for(var t in e)T_(r,t,{get:e[t],enumerable:!0})};var Tf={};A_(Tf,{ACESFilmicToneMapping:()=>Yh,AddEquation:()=>ls,AddOperation:()=>zd,AdditiveAnimationBlendMode:()=>iu,AdditiveBlending:()=>zh,AgXToneMapping:()=>Kh,AlphaFormat:()=>tu,AlwaysCompare:()=>$d,AlwaysDepth:()=>Ho,AlwaysStencilFunc:()=>qd,AmbientLight:()=>Fa,AnimationAction:()=>Ya,AnimationClip:()=>gi,AnimationLoader:()=>th,AnimationMixer:()=>dh,AnimationObjectGroup:()=>uh,AnimationUtils:()=>eh,ArcCurve:()=>la,ArrayCamera:()=>Ha,ArrowHelper:()=>Dh,AttachedBindMode:()=>Nc,Audio:()=>Xa,AudioAnalyser:()=>hh,AudioContext:()=>Qr,AudioListener:()=>lh,AudioLoader:()=>oh,AxesHelper:()=>Uh,BackSide:()=>qt,BasicDepthPacking:()=>Wd,BasicShadowMap:()=>Am,BatchedMesh:()=>ta,BezierInterpolant:()=>Na,Bone:()=>is,BooleanKeyframeTrack:()=>di,Box2:()=>Za,Box3:()=>Ft,Box3Helper:()=>Lh,BoxGeometry:()=>ui,BoxHelper:()=>Ph,BufferAttribute:()=>Qe,BufferGeometry:()=>Oe,BufferGeometryLoader:()=>Va,ByteType:()=>jh,Cache:()=>Yn,Camera:()=>Gs,CameraHelper:()=>Ih,CanvasTexture:()=>jc,CapsuleGeometry:()=>sa,CatmullRomCurve3:()=>ca,CineonToneMapping:()=>qh,CircleGeometry:()=>ra,ClampToEdgeWrapping:()=>Yt,Clock:()=>yh,Color:()=>ce,ColorKeyframeTrack:()=>Zr,ColorManagement:()=>Je,Compatibility:()=>hg,CompressedArrayTexture:()=>Kc,CompressedCubeTexture:()=>Jc,CompressedTexture:()=>Us,CompressedTextureLoader:()=>nh,ConeGeometry:()=>Ur,ConstantAlphaFactor:()=>Fd,ConstantColorFactor:()=>Dd,Controls:()=>eo,CubeCamera:()=>Ga,CubeDepthTexture:()=>ia,CubeReflectionMapping:()=>ni,CubeRefractionMapping:()=>Oi,CubeTexture:()=>ss,CubeTextureLoader:()=>ih,CubeUVReflectionMapping:()=>Zs,CubicBezierCurve:()=>Fr,CubicBezierCurve3:()=>ha,CubicInterpolant:()=>Pa,CullFaceBack:()=>Bh,CullFaceFront:()=>xd,CullFaceFrontBack:()=>Tm,CullFaceNone:()=>_d,Curve:()=>yn,CurvePath:()=>da,CustomBlending:()=>vd,CustomToneMapping:()=>Zh,CylinderGeometry:()=>Dr,Cylindrical:()=>vh,Data3DTexture:()=>Rs,DataArrayTexture:()=>ws,DataTexture:()=>hn,DataTextureLoader:()=>sh,DataUtils:()=>Bc,DecrementStencilOp:()=>Vm,DecrementWrapStencilOp:()=>Hm,DefaultLoadingManager:()=>rf,DepthFormat:()=>Zn,DepthStencilFormat:()=>zi,DepthTexture:()=>Pi,DetachedBindMode:()=>kd,DirectionalLight:()=>Ws,DirectionalLightHelper:()=>Ch,DiscreteInterpolant:()=>La,DodecahedronGeometry:()=>oa,DoubleSide:()=>Rn,DstAlphaFactor:()=>Cd,DstColorFactor:()=>Pd,DynamicCopyUsage:()=>sg,DynamicDrawUsage:()=>$m,DynamicReadUsage:()=>tg,EdgesGeometry:()=>aa,EllipseCurve:()=>Fs,EqualCompare:()=>Kd,EqualDepth:()=>Xo,EqualStencilFunc:()=>Ym,EquirectangularReflectionMapping:()=>io,EquirectangularRefractionMapping:()=>so,Euler:()=>Dn,EventDispatcher:()=>xn,ExternalTexture:()=>Nr,ExtrudeGeometry:()=>ga,FileLoader:()=>kt,Float16BufferAttribute:()=>Wc,Float32BufferAttribute:()=>fe,FloatType:()=>en,Fog:()=>jo,FogExp2:()=>Jo,FramebufferTexture:()=>Zc,FrontSide:()=>ei,Frustum:()=>hi,FrustumArray:()=>ea,GLBufferAttribute:()=>_h,GLSL1:()=>og,GLSL3:()=>ru,GreaterCompare:()=>Jd,GreaterDepth:()=>Yo,GreaterEqualCompare:()=>Dl,GreaterEqualDepth:()=>qo,GreaterEqualStencilFunc:()=>jm,GreaterStencilFunc:()=>Km,GridHelper:()=>wh,Group:()=>cn,HTMLTexture:()=>$c,HalfFloatType:()=>Bn,HemisphereLight:()=>Ua,HemisphereLightHelper:()=>Eh,IcosahedronGeometry:()=>_a,ImageBitmapLoader:()=>$r,ImageLoader:()=>as,ImageUtils:()=>Ko,IncrementStencilOp:()=>km,IncrementWrapStencilOp:()=>Gm,InstancedBufferAttribute:()=>An,InstancedBufferGeometry:()=>ka,InstancedInterleavedBuffer:()=>gh,InstancedMesh:()=>Ii,Int16BufferAttribute:()=>Gc,Int32BufferAttribute:()=>Hc,Int8BufferAttribute:()=>zc,IntType:()=>Ja,InterleavedBuffer:()=>ci,InterleavedBufferAttribute:()=>Kn,Interpolant:()=>$n,InterpolateBezier:()=>Dc,InterpolateDiscrete:()=>Qi,InterpolateLinear:()=>es,InterpolateSmooth:()=>Fo,InterpolationSamplingMode:()=>cg,InterpolationSamplingType:()=>lg,InvertStencilOp:()=>Wm,KeepStencilOp:()=>Oo,KeyframeTrack:()=>dn,LOD:()=>Qo,LatheGeometry:()=>xa,Layers:()=>Cs,LessCompare:()=>Zd,LessDepth:()=>Wo,LessEqualCompare:()=>Nl,LessEqualDepth:()=>As,LessEqualStencilFunc:()=>Zm,LessStencilFunc:()=>qm,Light:()=>Qn,LightProbe:()=>Ba,LightShadow:()=>Vs,Line:()=>En,Line3:()=>Sh,LineBasicMaterial:()=>Rt,LineCurve:()=>Or,LineCurve3:()=>ua,LineDashedMaterial:()=>Ia,LineLoop:()=>Ds,LineSegments:()=>Xt,LinearFilter:()=>pt,LinearInterpolant:()=>Yr,LinearMipMapLinearFilter:()=>Im,LinearMipMapNearestFilter:()=>Cm,LinearMipmapLinearFilter:()=>vn,LinearMipmapNearestFilter:()=>cs,LinearSRGBColorSpace:()=>nn,LinearToneMapping:()=>Wh,LinearTransfer:()=>Er,Loader:()=>It,LoaderUtils:()=>Fn,LoadingManager:()=>Kr,LoopOnce:()=>Vd,LoopPingPong:()=>Hd,LoopRepeat:()=>Gd,MOUSE:()=>Ui,Material:()=>vt,MaterialBlending:()=>Em,MaterialLoader:()=>za,MathUtils:()=>mo,Matrix2:()=>Mh,Matrix3:()=>qe,Matrix4:()=>ze,MaxEquation:()=>Td,Mesh:()=>rt,MeshBasicMaterial:()=>Kt,MeshDepthMaterial:()=>Xr,MeshDistanceMaterial:()=>qr,MeshLambertMaterial:()=>ks,MeshMatcapMaterial:()=>Ca,MeshNormalMaterial:()=>Ra,MeshPhongMaterial:()=>zs,MeshPhysicalMaterial:()=>sn,MeshStandardMaterial:()=>Un,MeshToonMaterial:()=>wa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l=n[i+0],c=n[i+1],h=n[i+2],u=n[i+3],d=s[o+0],f=s[o+1],p=s[o+2],_=s[o+3];if(u!==_||l!==d||c!==f||h!==p){let g=l*d+c*f+h*p+u*_;g<0&&(d=-d,f=-f,p=-p,_=-_,g=-g);let m=1-a;if(g<.9995){let y=Math.acos(g),b=Math.sin(y);m=Math.sin(m*y)/b,a=Math.sin(a*y)/b,l=l*m+d*a,c=c*m+f*a,h=h*m+p*a,u=u*m+_*a}else{l=l*m+d*a,c=c*m+f*a,h=h*m+p*a,u=u*m+_*a;let y=1/Math.sqrt(l*l+c*c+h*h+u*u);l*=y,c*=y,h*=y,u*=y}}e[t]=l,e[t+1]=c,e[t+2]=h,e[t+3]=u}static multiplyQuaternionsFlat(e,t,n,i,s,o){let a=n[i],l=n[i+1],c=n[i+2],h=n[i+3],u=s[o],d=s[o+1],f=s[o+2],p=s[o+3];return e[t]=a*p+h*u+l*f-c*d,e[t+1]=l*p+h*d+c*u-a*f,e[t+2]=c*p+h*f+a*d-l*u,e[t+3]=h*p-a*u-l*d-c*f,e}get x(){return this._x}set x(e){this._x=e,this._onChangeCallback()}get y(){return this._y}set y(e){this._y=e,this._onChangeCallback()}get z(){return this._z}set z(e){this._z=e,this._onChangeCallback()}get w(){return this._w}set w(e){this._w=e,this._onChangeCallback()}set(e,t,n,i){return this._x=e,this._y=t,this._z=n,this._w=i,this._onChangeCallback(),this}clone(){return new this.constructor(this._x,this._y,this._z,this._w)}copy(e){return this._x=e.x,this._y=e.y,this._z=e.z,this._w=e.w,this._onChangeCallback(),this}setFromEuler(e,t=!0){let n=e._x,i=e._y,s=e._z,o=e._order,a=Math.cos,l=Math.sin,c=a(n/2),h=a(i/2),u=a(s/2),d=l(n/2),f=l(i/2),p=l(s/2);switch(o){case"XYZ":this._x=d*h*u+c*f*p,this._y=c*f*u-d*h*p,this._z=c*h*p+d*f*u,this._w=c*h*u-d*f*p;break;case"YXZ":this._x=d*h*u+c*f*p,this._y=c*f*u-d*h*p,this._z=c*h*p-d*f*u,this._w=c*h*u+d*f*p;break;case"ZXY":this._x=d*h*u-c*f*p,this._y=c*f*u+d*h*p,this._z=c*h*p+d*f*u,this._w=c*h*u-d*f*p;break;case"ZYX":this._x=d*h*u-c*f*p,this._y=c*f*u+d*h*p,this._z=c*h*p-d*f*u,this._w=c*h*u+d*f*p;break;case"YZX":this._x=d*h*u+c*f*p,this._y=c*f*u+d*h*p,this._z=c*h*p-d*f*u,this._w=c*h*u-d*f*p;break;case"XZY":this._x=d*h*u-c*f*p,this._y=c*f*u-d*h*p,this._z=c*h*p+d*f*u,this._w=c*h*u+d*f*p;break;default:de("Quaternion: .setFromEuler() encountered an unknown order: "+o)}return t===!0&&this._onChangeCallback(),this}setFromAxisAngle(e,t){let n=t/2,i=Math.sin(n);return this._x=e.x*i,this._y=e.y*i,this._z=e.z*i,this._w=Math.cos(n),this._onChangeCallback(),this}setFromRotationMatrix(e){let t=e.elements,n=t[0],i=t[4],s=t[8],o=t[1],a=t[5],l=t[9],c=t[2],h=t[6],u=t[10],d=n+a+u;if(d>0){let f=.5/Math.sqrt(d+1);this._w=.25/f,this._x=(h-l)*f,this._y=(s-c)*f,this._z=(o-i)*f}else if(n>a&&n>u){let f=2*Math.sqrt(1+n-a-u);this._w=(h-l)/f,this._x=.25*f,this._y=(i+o)/f,this._z=(s+c)/f}else if(a>u){let f=2*Math.sqrt(1+a-n-u);this._w=(s-c)/f,this._x=(i+o)/f,this._y=.25*f,this._z=(l+h)/f}else{let f=2*Math.sqrt(1+u-n-a);this._w=(o-i)/f,this._x=(s+c)/f,this._y=(l+h)/f,this._z=.25*f}return this._onChangeCallback(),this}setFromUnitVectors(e,t){let n=e.dot(t)+1;return n<1e-8?(n=0,Math.abs(e.x)>Math.abs(e.z)?(this._x=-e.y,this._y=e.x,this._z=0,this._w=n):(this._x=0,this._y=-e.z,this._z=e.y,this._w=n)):(this._x=e.y*t.z-e.z*t.y,this._y=e.z*t.x-e.x*t.z,this._z=e.x*t.y-e.y*t.x,this._w=n),this.normalize()}angleTo(e){return 2*Math.acos(Math.abs(He(this.dot(e),-1,1)))}rotateTowards(e,t){let n=this.angleTo(e);if(n===0)return this;let i=Math.min(1,t/n);return this.slerp(e,i),this}identity(){return this.set(0,0,0,1)}invert(){return this.conjugate()}conjugate(){return this._x*=-1,this._y*=-1,this._z*=-1,this._onChangeCallback(),this}dot(e){return this._x*e._x+this._y*e._y+this._z*e._z+this._w*e._w}lengthSq(){return this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w}length(){return Math.sqrt(this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w)}normalize(){let e=this.length();return e===0?(this._x=0,this._y=0,this._z=0,this._w=1):(e=1/e,this._x=this._x*e,this._y=this._y*e,this._z=this._z*e,this._w=this._w*e),this._onChangeCallback(),this}multiply(e){return this.multiplyQuaternions(this,e)}premultiply(e){return this.multiplyQuaternions(e,this)}multiplyQuaternions(e,t){let n=e._x,i=e._y,s=e._z,o=e._w,a=t._x,l=t._y,c=t._z,h=t._w;return this._x=n*h+o*a+i*c-s*l,this._y=i*h+o*l+s*a-n*c,this._z=s*h+o*c+n*l-i*a,this._w=o*h-n*a-i*l-s*c,this._onChangeCallback(),this}slerp(e,t){let n=e._x,i=e._y,s=e._z,o=e._w,a=this.dot(e);a<0&&(n=-n,i=-i,s=-s,o=-o,a=-a);let l=1-t;if(a<.9995){let c=Math.acos(a),h=Math.sin(c);l=Math.sin(l*c)/h,t=Math.sin(t*c)/h,this._x=this._x*l+n*t,this._y=this._y*l+i*t,this._z=this._z*l+s*t,this._w=this._w*l+o*t,this._onChangeCallback()}else this._x=this._x*l+n*t,this._y=this._y*l+i*t,this._z=this._z*l+s*t,this._w=this._w*l+o*t,this.normalize();return this}slerpQuaternions(e,t,n){return this.copy(e).slerp(t,n)}random(){let e=2*Math.PI*Math.random(),t=2*Math.PI*Math.random(),n=Math.random(),i=Math.sqrt(1-n),s=Math.sqrt(n);return this.set(i*Math.sin(e),i*Math.cos(e),s*Math.sin(t),s*Math.cos(t))}equals(e){return e._x===this._x&&e._y===this._y&&e._z===this._z&&e._w===this._w}fromArray(e,t=0){return this._x=e[t],this._y=e[t+1],this._z=e[t+2],this._w=e[t+3],this._onChangeCallback(),this}toArray(e=[],t=0){return e[t]=this._x,e[t+1]=this._y,e[t+2]=this._z,e[t+3]=this._w,e}fromBufferAttribute(e,t){return this._x=e.getX(t),this._y=e.getY(t),this._z=e.getZ(t),this._w=e.getW(t),this._onChangeCallback(),this}toJSON(){return this.toArray()}_onChange(e){return this._onChangeCallback=e,this}_onChangeCallback(){}*[Symbol.iterator](){yield this._x,yield this._y,yield this._z,yield this._w}},R=class r{static{r.prototype.isVector3=!0}constructor(e=0,t=0,n=0){this.x=e,this.y=t,this.z=n}set(e,t,n){return n===void 0&&(n=this.z),this.x=e,this.y=t,this.z=n,this}setScalar(e){return this.x=e,this.y=e,this.z=e,this}setX(e){return 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this.x=Math.floor(this.x),this.y=Math.floor(this.y),this.z=Math.floor(this.z),this}ceil(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this.z=Math.ceil(this.z),this}round(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this.z=Math.round(this.z),this}roundToZero(){return this.x=Math.trunc(this.x),this.y=Math.trunc(this.y),this.z=Math.trunc(this.z),this}negate(){return this.x=-this.x,this.y=-this.y,this.z=-this.z,this}dot(e){return this.x*e.x+this.y*e.y+this.z*e.z}lengthSq(){return this.x*this.x+this.y*this.y+this.z*this.z}length(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z)}manhattanLength(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)}normalize(){return this.divideScalar(this.length()||1)}setLength(e){return this.normalize().multiplyScalar(e)}lerp(e,t){return this.x+=(e.x-this.x)*t,this.y+=(e.y-this.y)*t,this.z+=(e.z-this.z)*t,this}lerpVectors(e,t,n){return this.x=e.x+(t.x-e.x)*n,this.y=e.y+(t.y-e.y)*n,this.z=e.z+(t.z-e.z)*n,this}cross(e){return this.crossVectors(this,e)}crossVectors(e,t){let n=e.x,i=e.y,s=e.z,o=t.x,a=t.y,l=t.z;return this.x=i*l-s*a,this.y=s*o-n*l,this.z=n*a-i*o,this}projectOnVector(e){let t=e.lengthSq();if(t===0)return this.set(0,0,0);let n=e.dot(this)/t;return this.copy(e).multiplyScalar(n)}projectOnPlane(e){return Su.copy(this).projectOnVector(e),this.sub(Su)}reflect(e){return this.sub(Su.copy(e).multiplyScalar(2*this.dot(e)))}angleTo(e){let t=Math.sqrt(this.lengthSq()*e.lengthSq());if(t===0)return Math.PI/2;let n=this.dot(e)/t;return Math.acos(He(n,-1,1))}distanceTo(e){return Math.sqrt(this.distanceToSquared(e))}distanceToSquared(e){let t=this.x-e.x,n=this.y-e.y,i=this.z-e.z;return t*t+n*n+i*i}manhattanDistanceTo(e){return Math.abs(this.x-e.x)+Math.abs(this.y-e.y)+Math.abs(this.z-e.z)}setFromSpherical(e){return this.setFromSphericalCoords(e.radius,e.phi,e.theta)}setFromSphericalCoords(e,t,n){let i=Math.sin(t)*e;return 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e.setFromMatrix3Column(this,0),t.setFromMatrix3Column(this,1),n.setFromMatrix3Column(this,2),this}setFromMatrix4(e){let t=e.elements;return this.set(t[0],t[4],t[8],t[1],t[5],t[9],t[2],t[6],t[10]),this}multiply(e){return this.multiplyMatrices(this,e)}premultiply(e){return this.multiplyMatrices(e,this)}multiplyMatrices(e,t){let n=e.elements,i=t.elements,s=this.elements,o=n[0],a=n[3],l=n[6],c=n[1],h=n[4],u=n[7],d=n[2],f=n[5],p=n[8],_=i[0],g=i[3],m=i[6],y=i[1],b=i[4],x=i[7],T=i[2],S=i[5],w=i[8];return s[0]=o*_+a*y+l*T,s[3]=o*g+a*b+l*S,s[6]=o*m+a*x+l*w,s[1]=c*_+h*y+u*T,s[4]=c*g+h*b+u*S,s[7]=c*m+h*x+u*w,s[2]=d*_+f*y+p*T,s[5]=d*g+f*b+p*S,s[8]=d*m+f*x+p*w,this}multiplyScalar(e){let t=this.elements;return t[0]*=e,t[3]*=e,t[6]*=e,t[1]*=e,t[4]*=e,t[7]*=e,t[2]*=e,t[5]*=e,t[8]*=e,this}determinant(){let e=this.elements,t=e[0],n=e[1],i=e[2],s=e[3],o=e[4],a=e[5],l=e[6],c=e[7],h=e[8];return t*o*h-t*a*c-n*s*h+n*a*l+i*s*c-i*o*l}invert(){let e=this.elements,t=e[0],n=e[1],i=e[2],s=e[3],o=e[4],a=e[5],l=e[6],c=e[7],h=e[8],u=h*o-a*c,d=a*l-h*s,f=c*s-o*l,p=t*u+n*d+i*f;if(p===0)return this.set(0,0,0,0,0,0,0,0,0);let _=1/p;return e[0]=u*_,e[1]=(i*c-h*n)*_,e[2]=(a*n-i*o)*_,e[3]=d*_,e[4]=(h*t-i*l)*_,e[5]=(i*s-a*t)*_,e[6]=f*_,e[7]=(n*l-c*t)*_,e[8]=(o*t-n*s)*_,this}transpose(){let e,t=this.elements;return e=t[1],t[1]=t[3],t[3]=e,e=t[2],t[2]=t[6],t[6]=e,e=t[5],t[5]=t[7],t[7]=e,this}getNormalMatrix(e){return this.setFromMatrix4(e).invert().transpose()}transposeIntoArray(e){let t=this.elements;return e[0]=t[0],e[1]=t[3],e[2]=t[6],e[3]=t[1],e[4]=t[4],e[5]=t[7],e[6]=t[2],e[7]=t[5],e[8]=t[8],this}setUvTransform(e,t,n,i,s,o,a){let l=Math.cos(s),c=Math.sin(s);return this.set(n*l,n*c,-n*(l*o+c*a)+o+e,-i*c,i*l,-i*(-c*o+l*a)+a+t,0,0,1),this}scale(e,t){return ai("Matrix3: .scale() is deprecated. 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this.source.getSize(Au).x}get height(){return this.source.getSize(Au).y}get depth(){return this.source.getSize(Au).z}get image(){return this.source.data}set image(e){this.source.data=e}updateMatrix(){this.matrix.setUvTransform(this.offset.x,this.offset.y,this.repeat.x,this.repeat.y,this.rotation,this.center.x,this.center.y)}addUpdateRange(e,t){this.updateRanges.push({start:e,count:t})}clearUpdateRanges(){this.updateRanges.length=0}clone(){return new this.constructor().copy(this)}copy(e){return this.name=e.name,this.source=e.source,this.mipmaps=e.mipmaps.slice(0),this.mapping=e.mapping,this.channel=e.channel,this.wrapS=e.wrapS,this.wrapT=e.wrapT,this.magFilter=e.magFilter,this.minFilter=e.minFilter,this.anisotropy=e.anisotropy,this.format=e.format,this.internalFormat=e.internalFormat,this.type=e.type,this.normalized=e.normalized,this.offset.copy(e.offset),this.repeat.copy(e.repeat),this.center.copy(e.center),this.rotation=e.rotation,this.matrixAutoUpdate=e.matrixAutoUpdate,this.matrix.copy(e.matrix),this.generateMipmaps=e.generateMipmaps,this.premultiplyAlpha=e.premultiplyAlpha,this.flipY=e.flipY,this.unpackAlignment=e.unpackAlignment,this.colorSpace=e.colorSpace,this.renderTarget=e.renderTarget,this.isRenderTargetTexture=e.isRenderTargetTexture,this.isArrayTexture=e.isArrayTexture,this.userData=JSON.parse(JSON.stringify(e.userData)),this.needsUpdate=!0,this}setValues(e){for(let t in e){let n=e[t];if(n===void 0){de(`Texture.setValues(): parameter '${t}' has value of 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this.set(1,0,0,0),this;t=Math.PI;let b=(c+1)/2,x=(f+1)/2,T=(m+1)/2,S=(h+d)/4,w=(u+_)/4,v=(p+g)/4;return b>x&&b>T?b<.01?(n=0,i=.707106781,s=.707106781):(n=Math.sqrt(b),i=S/n,s=w/n):x>T?x<.01?(n=.707106781,i=0,s=.707106781):(i=Math.sqrt(x),n=S/i,s=v/i):T<.01?(n=.707106781,i=.707106781,s=0):(s=Math.sqrt(T),n=w/s,i=v/s),this.set(n,i,s,t),this}let y=Math.sqrt((g-p)*(g-p)+(u-_)*(u-_)+(d-h)*(d-h));return Math.abs(y)<.001&&(y=1),this.x=(g-p)/y,this.y=(u-_)/y,this.z=(d-h)/y,this.w=Math.acos((c+f+m-1)/2),this}setFromMatrixPosition(e){let t=e.elements;return this.x=t[12],this.y=t[13],this.z=t[14],this.w=t[15],this}min(e){return this.x=Math.min(this.x,e.x),this.y=Math.min(this.y,e.y),this.z=Math.min(this.z,e.z),this.w=Math.min(this.w,e.w),this}max(e){return this.x=Math.max(this.x,e.x),this.y=Math.max(this.y,e.y),this.z=Math.max(this.z,e.z),this.w=Math.max(this.w,e.w),this}clamp(e,t){return this.x=He(this.x,e.x,t.x),this.y=He(this.y,e.y,t.y),this.z=He(this.z,e.z,t.z),this.w=He(this.w,e.w,t.w),this}clampScalar(e,t){return this.x=He(this.x,e,t),this.y=He(this.y,e,t),this.z=He(this.z,e,t),this.w=He(this.w,e,t),this}clampLength(e,t){let n=this.length();return this.divideScalar(n||1).multiplyScalar(He(n,e,t))}floor(){return this.x=Math.floor(this.x),this.y=Math.floor(this.y),this.z=Math.floor(this.z),this.w=Math.floor(this.w),this}ceil(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this.z=Math.ceil(this.z),this.w=Math.ceil(this.w),this}round(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this.z=Math.round(this.z),this.w=Math.round(this.w),this}roundToZero(){return this.x=Math.trunc(this.x),this.y=Math.trunc(this.y),this.z=Math.trunc(this.z),this.w=Math.trunc(this.w),this}negate(){return this.x=-this.x,this.y=-this.y,this.z=-this.z,this.w=-this.w,this}dot(e){return this.x*e.x+this.y*e.y+this.z*e.z+this.w*e.w}lengthSq(){return this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w}length(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w)}manhattanLength(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)+Math.abs(this.w)}normalize(){return this.divideScalar(this.length()||1)}setLength(e){return this.normalize().multiplyScalar(e)}lerp(e,t){return this.x+=(e.x-this.x)*t,this.y+=(e.y-this.y)*t,this.z+=(e.z-this.z)*t,this.w+=(e.w-this.w)*t,this}lerpVectors(e,t,n){return this.x=e.x+(t.x-e.x)*n,this.y=e.y+(t.y-e.y)*n,this.z=e.z+(t.z-e.z)*n,this.w=e.w+(t.w-e.w)*n,this}equals(e){return e.x===this.x&&e.y===this.y&&e.z===this.z&&e.w===this.w}fromArray(e,t=0){return this.x=e[t],this.y=e[t+1],this.z=e[t+2],this.w=e[t+3],this}toArray(e=[],t=0){return e[t]=this.x,e[t+1]=this.y,e[t+2]=this.z,e[t+3]=this.w,e}fromBufferAttribute(e,t){return this.x=e.getX(t),this.y=e.getY(t),this.z=e.getZ(t),this.w=e.getW(t),this}random(){return this.x=Math.random(),this.y=Math.random(),this.z=Math.random(),this.w=Math.random(),this}*[Symbol.iterator](){yield this.x,yield this.y,yield this.z,yield this.w}},Cr=class extends xn{constructor(e=1,t=1,n={}){super(),n=Object.assign({generateMipmaps:!1,internalFormat:null,minFilter:pt,depthBuffer:!0,stencilBuffer:!1,resolveColorBuffer:!0,resolveDepthBuffer:!0,resolveStencilBuffer:!0,storeMultisampledColorBuffer:!0,storeMultisampledDepthBuffer:!0,storeMultisampledStencilBuffer:!0,depthTexture:null,samples:0,count:1,depth:1,multiview:!1,useArrayDepthTexture:!1},n),this.isRenderTarget=!0,this.width=e,this.height=t,this.depth=n.depth,this.scissor=new mt(0,0,e,t),this.scissorTest=!1,this.viewport=new mt(0,0,e,t),this.textures=[];let i={width:e,height:t,depth:n.depth},s=new Et(i),o=n.count;for(let a=0;a<o;a++)this.textures[a]=s.clone(),this.textures[a].isRenderTargetTexture=!0,this.textures[a].renderTarget=this;this._setTextureOptions(n),this.depthBuffer=n.depthBuffer,this.stencilBuffer=n.stencilBuffer,this.resolveColorBuffer=n.resolveColorBuffer,this.resolveDepthBuffer=n.resolveDepthBuffer,this.resolveStencilBuffer=n.resolveStencilBuffer,this.storeMultisampledColorBuffer=n.storeMultisampledColorBuffer,this.storeMultisampledDepthBuffer=n.storeMultisampledDepthBuffer,this.storeMultisampledStencilBuffer=n.storeMultisampledStencilBuffer,this._depthTexture=null,this.depthTexture=n.depthTexture,this.samples=n.samples,this.multiview=n.multiview,this.useArrayDepthTexture=n.useArrayDepthTexture}_setTextureOptions(e={}){let t={minFilter:pt,generateMipmaps:!1,flipY:!1,internalFormat:null};e.mapping!==void 0&&(t.mapping=e.mapping),e.wrapS!==void 0&&(t.wrapS=e.wrapS),e.wrapT!==void 0&&(t.wrapT=e.wrapT),e.wrapR!==void 0&&(t.wrapR=e.wrapR),e.magFilter!==void 0&&(t.magFilter=e.magFilter),e.minFilter!==void 0&&(t.minFilter=e.minFilter),e.format!==void 0&&(t.format=e.format),e.type!==void 0&&(t.type=e.type),e.anisotropy!==void 0&&(t.anisotropy=e.anisotropy),e.colorSpace!==void 0&&(t.colorSpace=e.colorSpace),e.flipY!==void 0&&(t.flipY=e.flipY),e.generateMipmaps!==void 0&&(t.generateMipmaps=e.generateMipmaps),e.internalFormat!==void 0&&(t.internalFormat=e.internalFormat);for(let n=0;n<this.textures.length;n++)this.textures[n].setValues(t)}get texture(){return this.textures[0]}set texture(e){this.textures[0]=e}set depthTexture(e){this._depthTexture!==null&&this._depthTexture.renderTarget===this&&(this._depthTexture.renderTarget=null),e!==null&&e.renderTarget===null&&(e.renderTarget=this),this._depthTexture=e}get depthTexture(){return this._depthTexture}setSize(e,t,n=1){if(this.width!==e||this.height!==t||this.depth!==n){this.width=e,this.height=t,this.depth=n;for(let i=0,s=this.textures.length;i<s;i++)this.textures[i].image.width=e,this.textures[i].image.height=t,this.textures[i].image.depth=n,this.textures[i].isData3DTexture!==!0&&(this.textures[i].isArrayTexture=this.textures[i].image.depth>1);this.dispose()}this.viewport.set(0,0,e,t),this.scissor.set(0,0,e,t)}clone(){return new this.constructor().copy(this)}copy(e){this.width=e.width,this.height=e.height,this.depth=e.depth,this.scissor.copy(e.scissor),this.scissorTest=e.scissorTest,this.viewport.copy(e.viewport),this.textures.length=0;for(let t=0,n=e.textures.length;t<n;t++){this.textures[t]=e.textures[t].clone(),this.textures[t].isRenderTargetTexture=!0,this.textures[t].renderTarget=this;let i=Object.assign({},e.textures[t].image);this.textures[t].source=new Ln(i)}if(this.depthBuffer=e.depthBuffer,this.stencilBuffer=e.stencilBuffer,this.resolveColorBuffer=e.resolveColorBuffer,this.resolveDepthBuffer=e.resolveDepthBuffer,this.resolveStencilBuffer=e.resolveStencilBuffer,this.storeMultisampledColorBuffer=e.storeMultisampledColorBuffer,this.storeMultisampledDepthBuffer=e.storeMultisampledDepthBuffer,this.storeMultisampledStencilBuffer=e.storeMultisampledStencilBuffer,e.depthTexture!==null)if(e.depthTexture.renderTarget===e){let t=e.depthTexture.clone();t.renderTarget=null,this.depthTexture=t}else this.depthTexture=e.depthTexture;return this.samples=e.samples,this.multiview=e.multiview,this.useArrayDepthTexture=e.useArrayDepthTexture,this}dispose(){this.dispatchEvent({type:"dispose"})}},Zt=class extends Cr{constructor(e=1,t=1,n={}){super(e,t,n),this.isWebGLRenderTarget=!0}},ws=class extends Et{constructor(e=null,t=1,n=1,i=1){super(null),this.isDataArrayTexture=!0,this.image={data:e,width:t,height:n,depth:i},this.magFilter=At,this.minFilter=At,this.wrapR=Yt,this.generateMipmaps=!1,this.flipY=!1,this.unpackAlignment=1,this.layerUpdates=new Set}copy(e){return super.copy(e),this.wrapR=e.wrapR,this}addLayerUpdate(e){this.layerUpdates.add(e)}clearLayerUpdates(){this.layerUpdates.clear()}},Fc=class extends Zt{constructor(e=1,t=1,n=1,i={}){super(e,t,i),this.isWebGLArrayRenderTarget=!0,this.depth=n,this.texture=new ws(null,e,t,n),this._setTextureOptions(i),this.texture.isRenderTargetTexture=!0}},Rs=class extends Et{constructor(e=null,t=1,n=1,i=1){super(null),this.isData3DTexture=!0,this.image={data:e,width:t,height:n,depth:i},this.magFilter=At,this.minFilter=At,this.wrapR=Yt,this.generateMipmaps=!1,this.flipY=!1,this.unpackAlignment=1}copy(e){return super.copy(e),this.wrapR=e.wrapR,this}},Oc=class extends Zt{constructor(e=1,t=1,n=1,i={}){super(e,t,i),this.isWebGL3DRenderTarget=!0,this.depth=n,this.texture=new Rs(null,e,t,n),this._setTextureOptions(i),this.texture.isRenderTargetTexture=!0}},ze=class r{static{r.prototype.isMatrix4=!0}constructor(e,t,n,i,s,o,a,l,c,h,u,d,f,p,_,g){this.elements=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],e!==void 0&&this.set(e,t,n,i,s,o,a,l,c,h,u,d,f,p,_,g)}set(e,t,n,i,s,o,a,l,c,h,u,d,f,p,_,g){let m=this.elements;return m[0]=e,m[4]=t,m[8]=n,m[12]=i,m[1]=s,m[5]=o,m[9]=a,m[13]=l,m[2]=c,m[6]=h,m[10]=u,m[14]=d,m[3]=f,m[7]=p,m[11]=_,m[15]=g,this}identity(){return this.set(1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1),this}clone(){return new r().fromArray(this.elements)}copy(e){let t=this.elements,n=e.elements;return t[0]=n[0],t[1]=n[1],t[2]=n[2],t[3]=n[3],t[4]=n[4],t[5]=n[5],t[6]=n[6],t[7]=n[7],t[8]=n[8],t[9]=n[9],t[10]=n[10],t[11]=n[11],t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15],this}copyPosition(e){let t=this.elements,n=e.elements;return t[12]=n[12],t[13]=n[13],t[14]=n[14],this}setFromMatrix3(e){let t=e.elements;return this.set(t[0],t[3],t[6],0,t[1],t[4],t[7],0,t[2],t[5],t[8],0,0,0,0,1),this}extractBasis(e,t,n){return this.determinantAffine()===0?(e.set(1,0,0),t.set(0,1,0),n.set(0,0,1),this):(e.setFromMatrixColumn(this,0),t.setFromMatrixColumn(this,1),n.setFromMatrixColumn(this,2),this)}makeBasis(e,t,n){return this.set(e.x,t.x,n.x,0,e.y,t.y,n.y,0,e.z,t.z,n.z,0,0,0,0,1),this}extractRotation(e){if(e.determinantAffine()===0)return this.identity();let t=this.elements,n=e.elements,i=1/sr.setFromMatrixColumn(e,0).length(),s=1/sr.setFromMatrixColumn(e,1).length(),o=1/sr.setFromMatrixColumn(e,2).length();return t[0]=n[0]*i,t[1]=n[1]*i,t[2]=n[2]*i,t[3]=0,t[4]=n[4]*s,t[5]=n[5]*s,t[6]=n[6]*s,t[7]=0,t[8]=n[8]*o,t[9]=n[9]*o,t[10]=n[10]*o,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,this}makeRotationFromEuler(e){let t=this.elements,n=e.x,i=e.y,s=e.z,o=Math.cos(n),a=Math.sin(n),l=Math.cos(i),c=Math.sin(i),h=Math.cos(s),u=Math.sin(s);if(e.order==="XYZ"){let d=o*h,f=o*u,p=a*h,_=a*u;t[0]=l*h,t[4]=-l*u,t[8]=c,t[1]=f+p*c,t[5]=d-_*c,t[9]=-a*l,t[2]=_-d*c,t[6]=p+f*c,t[10]=o*l}else if(e.order==="YXZ"){let d=l*h,f=l*u,p=c*h,_=c*u;t[0]=d+_*a,t[4]=p*a-f,t[8]=o*c,t[1]=o*u,t[5]=o*h,t[9]=-a,t[2]=f*a-p,t[6]=_+d*a,t[10]=o*l}else if(e.order==="ZXY"){let d=l*h,f=l*u,p=c*h,_=c*u;t[0]=d-_*a,t[4]=-o*u,t[8]=p+f*a,t[1]=f+p*a,t[5]=o*h,t[9]=_-d*a,t[2]=-o*c,t[6]=a,t[10]=o*l}else if(e.order==="ZYX"){let d=o*h,f=o*u,p=a*h,_=a*u;t[0]=l*h,t[4]=p*c-f,t[8]=d*c+_,t[1]=l*u,t[5]=_*c+d,t[9]=f*c-p,t[2]=-c,t[6]=a*l,t[10]=o*l}else if(e.order==="YZX"){let d=o*l,f=o*c,p=a*l,_=a*c;t[0]=l*h,t[4]=_-d*u,t[8]=p*u+f,t[1]=u,t[5]=o*h,t[9]=-a*h,t[2]=-c*h,t[6]=f*u+p,t[10]=d-_*u}else if(e.order==="XZY"){let d=o*l,f=o*c,p=a*l,_=a*c;t[0]=l*h,t[4]=-u,t[8]=c*h,t[1]=d*u+_,t[5]=o*h,t[9]=f*u-p,t[2]=p*u-f,t[6]=a*h,t[10]=_*u+d}return t[3]=0,t[7]=0,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,this}makeRotationFromQuaternion(e){return this.compose(Y_,e,Z_)}lookAt(e,t,n){let i=this.elements;return Sn.subVectors(e,t),Sn.lengthSq()===0&&(Sn.z=1),Sn.normalize(),Wi.crossVectors(n,Sn),Wi.lengthSq()===0&&(Math.abs(n.z)===1?Sn.x+=1e-4:Sn.z+=1e-4,Sn.normalize(),Wi.crossVectors(n,Sn)),Wi.normalize(),Wl.crossVectors(Sn,Wi),i[0]=Wi.x,i[4]=Wl.x,i[8]=Sn.x,i[1]=Wi.y,i[5]=Wl.y,i[9]=Sn.y,i[2]=Wi.z,i[6]=Wl.z,i[10]=Sn.z,this}multiply(e){return this.multiplyMatrices(this,e)}premultiply(e){return this.multiplyMatrices(e,this)}multiplyMatrices(e,t){let n=e.elements,i=t.elements,s=this.elements,o=n[0],a=n[4],l=n[8],c=n[12],h=n[1],u=n[5],d=n[9],f=n[13],p=n[2],_=n[6],g=n[10],m=n[14],y=n[3],b=n[7],x=n[11],T=n[15],S=i[0],w=i[4],v=i[8],E=i[12],I=i[1],P=i[5],F=i[9],z=i[13],N=i[2],B=i[6],H=i[10],X=i[14],ie=i[3],q=i[7],Q=i[11],ne=i[15];return s[0]=o*S+a*I+l*N+c*ie,s[4]=o*w+a*P+l*B+c*q,s[8]=o*v+a*F+l*H+c*Q,s[12]=o*E+a*z+l*X+c*ne,s[1]=h*S+u*I+d*N+f*ie,s[5]=h*w+u*P+d*B+f*q,s[9]=h*v+u*F+d*H+f*Q,s[13]=h*E+u*z+d*X+f*ne,s[2]=p*S+_*I+g*N+m*ie,s[6]=p*w+_*P+g*B+m*q,s[10]=p*v+_*F+g*H+m*Q,s[14]=p*E+_*z+g*X+m*ne,s[3]=y*S+b*I+x*N+T*ie,s[7]=y*w+b*P+x*B+T*q,s[11]=y*v+b*F+x*H+T*Q,s[15]=y*E+b*z+x*X+T*ne,this}multiplyScalar(e){let t=this.elements;return t[0]*=e,t[4]*=e,t[8]*=e,t[12]*=e,t[1]*=e,t[5]*=e,t[9]*=e,t[13]*=e,t[2]*=e,t[6]*=e,t[10]*=e,t[14]*=e,t[3]*=e,t[7]*=e,t[11]*=e,t[15]*=e,this}determinant(){let e=this.elements,t=e[0],n=e[4],i=e[8],s=e[12],o=e[1],a=e[5],l=e[9],c=e[13],h=e[2],u=e[6],d=e[10],f=e[14],p=e[3],_=e[7],g=e[11],m=e[15],y=l*f-c*d,b=a*f-c*u,x=a*d-l*u,T=o*f-c*h,S=o*d-l*h,w=o*u-a*h;return t*(_*y-g*b+m*x)-n*(p*y-g*T+m*S)+i*(p*b-_*T+m*w)-s*(p*x-_*S+g*w)}determinantAffine(){let e=this.elements,t=e[0],n=e[4],i=e[8],s=e[1],o=e[5],a=e[9],l=e[2],c=e[6],h=e[10];return t*(o*h-a*c)-n*(s*h-a*l)+i*(s*c-o*l)}transpose(){let e=this.elements,t;return t=e[1],e[1]=e[4],e[4]=t,t=e[2],e[2]=e[8],e[8]=t,t=e[6],e[6]=e[9],e[9]=t,t=e[3],e[3]=e[12],e[12]=t,t=e[7],e[7]=e[13],e[13]=t,t=e[11],e[11]=e[14],e[14]=t,this}setPosition(e,t,n){let i=this.elements;return e.isVector3?(i[12]=e.x,i[13]=e.y,i[14]=e.z):(i[12]=e,i[13]=t,i[14]=n),this}invert(){let e=this.elements,t=e[0],n=e[1],i=e[2],s=e[3],o=e[4],a=e[5],l=e[6],c=e[7],h=e[8],u=e[9],d=e[10],f=e[11],p=e[12],_=e[13],g=e[14],m=e[15],y=t*a-n*o,b=t*l-i*o,x=t*c-s*o,T=n*l-i*a,S=n*c-s*a,w=i*c-s*l,v=h*_-u*p,E=h*g-d*p,I=h*m-f*p,P=u*g-d*_,F=u*m-f*_,z=d*m-f*g,N=y*z-b*F+x*P+T*I-S*E+w*v;if(N===0)return this.set(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);let B=1/N;return e[0]=(a*z-l*F+c*P)*B,e[1]=(i*F-n*z-s*P)*B,e[2]=(_*w-g*S+m*T)*B,e[3]=(d*S-u*w-f*T)*B,e[4]=(l*I-o*z-c*E)*B,e[5]=(t*z-i*I+s*E)*B,e[6]=(g*x-p*w-m*b)*B,e[7]=(h*w-d*x+f*b)*B,e[8]=(o*F-a*I+c*v)*B,e[9]=(n*I-t*F-s*v)*B,e[10]=(p*S-_*x+m*y)*B,e[11]=(u*x-h*S-f*y)*B,e[12]=(a*E-o*P-l*v)*B,e[13]=(t*P-n*E+i*v)*B,e[14]=(_*b-p*T-g*y)*B,e[15]=(h*T-u*b+d*y)*B,this}scale(e){let t=this.elements,n=e.x,i=e.y,s=e.z;return t[0]*=n,t[4]*=i,t[8]*=s,t[1]*=n,t[5]*=i,t[9]*=s,t[2]*=n,t[6]*=i,t[10]*=s,t[3]*=n,t[7]*=i,t[11]*=s,this}getMaxScaleOnAxis(){let e=this.elements,t=e[0]*e[0]+e[1]*e[1]+e[2]*e[2],n=e[4]*e[4]+e[5]*e[5]+e[6]*e[6],i=e[8]*e[8]+e[9]*e[9]+e[10]*e[10];return Math.sqrt(Math.max(t,n,i))}makeTranslation(e,t,n){return e.isVector3?this.set(1,0,0,e.x,0,1,0,e.y,0,0,1,e.z,0,0,0,1):this.set(1,0,0,e,0,1,0,t,0,0,1,n,0,0,0,1),this}makeRotationX(e){let t=Math.cos(e),n=Math.sin(e);return this.set(1,0,0,0,0,t,-n,0,0,n,t,0,0,0,0,1),this}makeRotationY(e){let t=Math.cos(e),n=Math.sin(e);return 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o=sr.set(i[0],i[1],i[2]).length(),a=sr.set(i[4],i[5],i[6]).length(),l=sr.set(i[8],i[9],i[10]).length();s<0&&(o=-o),Gn.copy(this);let c=1/o,h=1/a,u=1/l;return Gn.elements[0]*=c,Gn.elements[1]*=c,Gn.elements[2]*=c,Gn.elements[4]*=h,Gn.elements[5]*=h,Gn.elements[6]*=h,Gn.elements[8]*=u,Gn.elements[9]*=u,Gn.elements[10]*=u,t.setFromRotationMatrix(Gn),n.x=o,n.y=a,n.z=l,this}makePerspective(e,t,n,i,s,o,a=_n,l=!1){let c=this.elements,h=2*s/(t-e),u=2*s/(n-i),d=(t+e)/(t-e),f=(n+i)/(n-i),p,_;if(l)p=s/(o-s),_=o*s/(o-s);else if(a===_n)p=-(o+s)/(o-s),_=-2*o*s/(o-s);else if(a===ts)p=-o/(o-s),_=-o*s/(o-s);else throw new Error("THREE.Matrix4.makePerspective(): Invalid coordinate system: "+a);return c[0]=h,c[4]=0,c[8]=d,c[12]=0,c[1]=0,c[5]=u,c[9]=f,c[13]=0,c[2]=0,c[6]=0,c[10]=p,c[14]=_,c[3]=0,c[7]=0,c[11]=-1,c[15]=0,this}makeOrthographic(e,t,n,i,s,o,a=_n,l=!1){let c=this.elements,h=2/(t-e),u=2/(n-i),d=-(t+e)/(t-e),f=-(n+i)/(n-i),p,_;if(l)p=1/(o-s),_=o/(o-s);else if(a===_n)p=-2/(o-s),_=-(o+s)/(o-s);else 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y(e){this._y=e,this._onChangeCallback()}get z(){return this._z}set z(e){this._z=e,this._onChangeCallback()}get order(){return this._order}set order(e){this._order=e,this._onChangeCallback()}set(e,t,n,i=this._order){return this._x=e,this._y=t,this._z=n,this._order=i,this._onChangeCallback(),this}clone(){return new this.constructor(this._x,this._y,this._z,this._order)}copy(e){return this._x=e._x,this._y=e._y,this._z=e._z,this._order=e._order,this._onChangeCallback(),this}setFromRotationMatrix(e,t=this._order,n=!0){let i=e.elements,s=i[0],o=i[4],a=i[8],l=i[1],c=i[5],h=i[9],u=i[2],d=i[6],f=i[10];switch(t){case"XYZ":this._y=Math.asin(He(a,-1,1)),Math.abs(a)<.9999999?(this._x=Math.atan2(-h,f),this._z=Math.atan2(-o,s)):(this._x=Math.atan2(d,c),this._z=0);break;case"YXZ":this._x=Math.asin(-He(h,-1,1)),Math.abs(h)<.9999999?(this._y=Math.atan2(a,f),this._z=Math.atan2(l,c)):(this._y=Math.atan2(-u,s),this._z=0);break;case"ZXY":this._x=Math.asin(He(d,-1,1)),Math.abs(d)<.9999999?(this._y=Math.atan2(-u,f),this._z=Math.atan2(-o,c)):(this._y=0,this._z=Math.atan2(l,s));break;case"ZYX":this._y=Math.asin(-He(u,-1,1)),Math.abs(u)<.9999999?(this._x=Math.atan2(d,f),this._z=Math.atan2(l,s)):(this._x=0,this._z=Math.atan2(-o,c));break;case"YZX":this._z=Math.asin(He(l,-1,1)),Math.abs(l)<.9999999?(this._x=Math.atan2(-h,c),this._y=Math.atan2(-u,s)):(this._x=0,this._y=Math.atan2(a,f));break;case"XZY":this._z=Math.asin(-He(o,-1,1)),Math.abs(o)<.9999999?(this._x=Math.atan2(d,c),this._y=Math.atan2(a,s)):(this._x=Math.atan2(-h,f),this._y=0);break;default:de("Euler: .setFromRotationMatrix() encountered an unknown order: "+t)}return this._order=t,n===!0&&this._onChangeCallback(),this}setFromQuaternion(e,t,n){return xp.makeRotationFromQuaternion(e),this.setFromRotationMatrix(xp,t,n)}setFromVector3(e,t=this._order){return this.set(e.x,e.y,e.z,t)}reorder(e){return yp.setFromEuler(this),this.setFromQuaternion(yp,e)}equals(e){return e._x===this._x&&e._y===this._y&&e._z===this._z&&e._order===this._order}fromArray(e){return this._x=e[0],this._y=e[1],this._z=e[2],e[3]!==void 0&&(this._order=e[3]),this._onChangeCallback(),this}toArray(e=[],t=0){return e[t]=this._x,e[t+1]=this._y,e[t+2]=this._z,e[t+3]=this._order,e}_onChange(e){return this._onChangeCallback=e,this}_onChangeCallback(){}*[Symbol.iterator](){yield this._x,yield this._y,yield this._z,yield this._order}};Dn.DEFAULT_ORDER="XYZ";var Cs=class{constructor(){this.mask=1}set(e){this.mask=(1<<e|0)>>>0}enable(e){this.mask|=1<<e|0}enableAll(){this.mask=-1}toggle(e){this.mask^=1<<e|0}disable(e){this.mask&=~(1<<e|0)}disableAll(){this.mask=0}test(e){return(this.mask&e.mask)!==0}isEnabled(e){return(this.mask&(1<<e|0))!==0}},K_=0,vp=new R,rr=new wt,Si=new ze,Xl=new R,So=new R,J_=new R,j_=new wt,Mp=new R(1,0,0),Sp=new R(0,1,0),bp=new R(0,0,1),Tp={type:"added"},$_={type:"removed"},or={type:"childadded",child:null},Eu={type:"childremoved",child:null},st=class r extends xn{constructor(){super(),this.isObject3D=!0,Object.defineProperty(this,"id",{value:K_++}),this.uuid=Tn(),this.name="",this.type="Object3D",this.parent=null,this.children=[],this.up=r.DEFAULT_UP.clone();let e=new R,t=new Dn,n=new wt,i=new R(1,1,1);function s(){n.setFromEuler(t,!1)}function o(){t.setFromQuaternion(n,void 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0,this.static=!1,this.userData={},this.pivot=null}onBeforeShadow(){}onAfterShadow(){}onBeforeRender(){}onAfterRender(){}applyMatrix4(e){this.matrixAutoUpdate&&this.updateMatrix(),this.matrix.premultiply(e),this.matrix.decompose(this.position,this.quaternion,this.scale)}applyQuaternion(e){return this.quaternion.premultiply(e),this}setRotationFromAxisAngle(e,t){this.quaternion.setFromAxisAngle(e,t)}setRotationFromEuler(e){this.quaternion.setFromEuler(e,!0)}setRotationFromMatrix(e){this.quaternion.setFromRotationMatrix(e)}setRotationFromQuaternion(e){this.quaternion.copy(e)}rotateOnAxis(e,t){return rr.setFromAxisAngle(e,t),this.quaternion.multiply(rr),this}rotateOnWorldAxis(e,t){return rr.setFromAxisAngle(e,t),this.quaternion.premultiply(rr),this}rotateX(e){return this.rotateOnAxis(Mp,e)}rotateY(e){return this.rotateOnAxis(Sp,e)}rotateZ(e){return this.rotateOnAxis(bp,e)}translateOnAxis(e,t){return 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n=0,i=t.length;n<i;n++)t[n].traverse(e)}traverseVisible(e){if(this.visible===!1)return;e(this);let t=this.children;for(let n=0,i=t.length;n<i;n++)t[n].traverseVisible(e)}traverseAncestors(e){let t=this.parent;t!==null&&(e(t),t.traverseAncestors(e))}updateMatrix(){this.matrix.compose(this.position,this.quaternion,this.scale);let e=this.pivot;if(e!==null){let t=e.x,n=e.y,i=e.z,s=this.matrix.elements;s[12]+=t-s[0]*t-s[4]*n-s[8]*i,s[13]+=n-s[1]*t-s[5]*n-s[9]*i,s[14]+=i-s[2]*t-s[6]*n-s[10]*i}this.matrixWorldNeedsUpdate=!0}updateMatrixWorld(e){this.matrixAutoUpdate&&this.updateMatrix(),(this.matrixWorldNeedsUpdate||e)&&(this.matrixWorldAutoUpdate===!0&&(this.parent===null?this.matrixWorld.copy(this.matrix):this.matrixWorld.multiplyMatrices(this.parent.matrixWorld,this.matrix)),this.matrixWorldNeedsUpdate=!1,e=!0);let t=this.children;for(let n=0,i=t.length;n<i;n++)t[n].updateMatrixWorld(e)}updateWorldMatrix(e,t,n=!1){let i=this.parent;if(e===!0&&i!==null&&i.updateWorldMatrix(!0,!1),this.matrixAutoUpdate&&this.updateMatrix(),(this.matrixWorldNeedsUpdate||n)&&(this.matrixWorldAutoUpdate===!0&&(this.parent===null?this.matrixWorld.copy(this.matrix):this.matrixWorld.multiplyMatrices(this.parent.matrixWorld,this.matrix)),this.matrixWorldNeedsUpdate=!1,n=!0),t===!0){let s=this.children;for(let o=0,a=s.length;o<a;o++)s[o].updateWorldMatrix(!1,!0,n)}}toJSON(e){let t=e===void 0||typeof e=="string",n={};t&&(e={geometries:{},materials:{},textures:{},images:{},shapes:{},skeletons:{},animations:{},nodes:{}},n.metadata={version:4.7,type:"Object",generator:"Object3D.toJSON"});let i={};i.uuid=this.uuid,i.type=this.type,i.name=this.name,i.castShadow=this.castShadow,i.receiveShadow=this.receiveShadow,i.visible=this.visible,i.frustumCulled=this.frustumCulled,i.renderOrder=this.renderOrder,i.static=this.static,i.matrixAutoUpdate=this.matrixAutoUpdate,Object.keys(this.userData).length>0&&(i.userData=this.userData),i.layers=this.layers.mask,i.matrix=this.matrix.toArray(),i.up=this.up.toArray(),this.pivot!==null&&(i.pivot=this.pivot.toArray()),this.morphTargetDictionary!==void 0&&(i.morphTargetDictionary=Object.assign({},this.morphTargetDictionary)),this.morphTargetInfluences!==void 0&&(i.morphTargetInfluences=this.morphTargetInfluences.slice()),this.isInstancedMesh&&(i.type="InstancedMesh",i.count=this.count,i.instanceMatrix=this.instanceMatrix.toJSON(),this.instanceColor!==null&&(i.instanceColor=this.instanceColor.toJSON())),this.isBatchedMesh&&(i.type="BatchedMesh",i.perObjectFrustumCulled=this.perObjectFrustumCulled,i.sortObjects=this.sortObjects,i.drawRanges=this._drawRanges,i.reservedRanges=this._reservedRanges,i.geometryInfo=this._geometryInfo.map(a=>({...a,boundingBox:a.boundingBox?a.boundingBox.toJSON():void 0,boundingSphere:a.boundingSphere?a.boundingSphere.toJSON():void 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a!==null&&(a.visible=i!==null),l!==null&&(l.visible=s!==null),c!==null&&(c.visible=o!==null),this}_getHandJoint(e,t){if(e.joints[t.jointName]===void 0){let n=new cn;n.matrixAutoUpdate=!1,n.visible=!1,e.joints[t.jointName]=n,e.add(n)}return e.joints[t.jointName]}},xg={aliceblue:15792383,antiquewhite:16444375,aqua:65535,aquamarine:8388564,azure:15794175,beige:16119260,bisque:16770244,black:0,blanchedalmond:16772045,blue:255,blueviolet:9055202,brown:10824234,burlywood:14596231,cadetblue:6266528,chartreuse:8388352,chocolate:13789470,coral:16744272,cornflowerblue:6591981,cornsilk:16775388,crimson:14423100,cyan:65535,darkblue:139,darkcyan:35723,darkgoldenrod:12092939,darkgray:11119017,darkgreen:25600,darkgrey:11119017,darkkhaki:12433259,darkmagenta:9109643,darkolivegreen:5597999,darkorange:16747520,darkorchid:10040012,darkred:9109504,darksalmon:15308410,darkseagreen:9419919,darkslateblue:4734347,darkslategray:3100495,darkslategrey:3100495,darkturquoise:52945,darkviolet:9699539,deeppink:16716947,deepskyblue:49151,dimgray:6908265,dimgrey:6908265,dodgerblue:2003199,firebrick:11674146,floralwhite:16775920,forestgreen:2263842,fuchsia:16711935,gainsboro:14474460,ghostwhite:16316671,gold:16766720,goldenrod:14329120,gray:8421504,green:32768,greenyellow:11403055,grey:8421504,honeydew:15794160,hotpink:16738740,indianred:13458524,indigo:4915330,ivory:16777200,khaki:15787660,lavender:15132410,lavenderblush:16773365,lawngreen:8190976,lemonchiffon:16775885,lightblue:11393254,lightcoral:15761536,lightcyan:14745599,lightgoldenrodyellow:16448210,lightgray:13882323,lightgreen:9498256,lightgrey:13882323,lightpink:16758465,lightsalmon:16752762,lightseagreen:2142890,lightskyblue:8900346,lightslategray:7833753,lightslategrey:7833753,lightsteelblue:11584734,lightyellow:16777184,lime:65280,limegreen:3329330,linen:16445670,magenta:16711935,maroon:8388608,mediumaquamarine:6737322,mediumblue:205,mediumorchid:12211667,mediumpurple:9662683,mediumseagreen:3978097,mediumslateblue:8087790,mediumspringgreen:64154,mediumturquoise:4772300,mediumvioletred:13047173,midnightblue:1644912,mintcream:16121850,mistyrose:16770273,moccasin:16770229,navajowhite:16768685,navy:128,oldlace:16643558,olive:8421376,olivedrab:7048739,orange:16753920,orangered:16729344,orchid:14315734,palegoldenrod:15657130,palegreen:10025880,paleturquoise:11529966,palevioletred:14381203,papayawhip:16773077,peachpuff:16767673,peru:13468991,pink:16761035,plum:14524637,powderblue:11591910,purple:8388736,rebeccapurple:6697881,red:16711680,rosybrown:12357519,royalblue:4286945,saddlebrown:9127187,salmon:16416882,sandybrown:16032864,seagreen:3050327,seashell:16774638,sienna:10506797,silver:12632256,skyblue:8900331,slateblue:6970061,slategray:7372944,slategrey:7372944,snow:16775930,springgreen:65407,steelblue:4620980,tan:13808780,teal:32896,thistle:14204888,tomato:16737095,turquoise:4251856,violet:15631086,wheat:16113331,white:16777215,whitesmoke:16119285,yellow:16776960,yellowgreen:10145074},Xi={h:0,s:0,l:0},ql={h:0,s:0,l:0};function 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e.r===this.r&&e.g===this.g&&e.b===this.b}fromArray(e,t=0){return this.r=e[t],this.g=e[t+1],this.b=e[t+2],this}toArray(e=[],t=0){return e[t]=this.r,e[t+1]=this.g,e[t+2]=this.b,e}fromBufferAttribute(e,t){return this.r=e.getX(t),this.g=e.getY(t),this.b=e.getZ(t),this}toJSON(){return this.getHex()}*[Symbol.iterator](){yield this.r,yield this.g,yield this.b}},$t=new ce;ce.NAMES=xg;var Jo=class r{constructor(e,t=25e-5){this.isFogExp2=!0,this.name="",this.color=new ce(e),this.density=t}clone(){return new r(this.color,this.density)}toJSON(){return{type:"FogExp2",name:this.name,color:this.color.getHex(),density:this.density}}},jo=class r{constructor(e,t=1,n=1e3){this.isFog=!0,this.name="",this.color=new ce(e),this.near=t,this.far=n}clone(){return new r(this.color,this.near,this.far)}toJSON(){return{type:"Fog",name:this.name,color:this.color.getHex(),near:this.near,far:this.far}}},Ps=class extends st{constructor(){super(),this.isScene=!0,this.type="Scene",this.background=null,this.environment=null,this.fog=null,this.backgroundBlurriness=0,this.backgroundIntensity=1,this.backgroundRotation=new Dn,this.environmentIntensity=1,this.environmentRotation=new Dn,this.overrideMaterial=null,typeof __THREE_DEVTOOLS__<"u"&&__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("observe",{detail:this}))}copy(e,t){return super.copy(e,t),e.background!==null&&(this.background=e.background.clone()),e.environment!==null&&(this.environment=e.environment.clone()),e.fog!==null&&(this.fog=e.fog.clone()),this.backgroundBlurriness=e.backgroundBlurriness,this.backgroundIntensity=e.backgroundIntensity,this.backgroundRotation.copy(e.backgroundRotation),this.environmentIntensity=e.environmentIntensity,this.environmentRotation.copy(e.environmentRotation),e.overrideMaterial!==null&&(this.overrideMaterial=e.overrideMaterial.clone()),this.matrixAutoUpdate=e.matrixAutoUpdate,this}toJSON(e){let t=super.toJSON(e);return this.fog!==null&&(t.object.fog=this.fog.toJSON()),t.object.backgroundBlurriness=this.backgroundBlurriness,t.object.backgroundIntensity=this.backgroundIntensity,t.object.backgroundRotation=this.backgroundRotation.toArray(),t.object.environmentIntensity=this.environmentIntensity,t.object.environmentRotation=this.environmentRotation.toArray(),t}},Hn=new R,bi=new R,Ru=new R,Ti=new R,ar=new R,lr=new R,Ap=new R,Cu=new R,Iu=new R,Pu=new R,Lu=new mt,Nu=new mt,Du=new mt,qn=class r{constructor(e=new R,t=new R,n=new R){this.a=e,this.b=t,this.c=n}static getNormal(e,t,n,i){i.subVectors(n,t),Hn.subVectors(e,t),i.cross(Hn);let s=i.lengthSq();return s>0?i.multiplyScalar(1/Math.sqrt(s)):i.set(0,0,0)}static getBarycoord(e,t,n,i,s){Hn.subVectors(i,t),bi.subVectors(n,t),Ru.subVectors(e,t);let o=Hn.dot(Hn),a=Hn.dot(bi),l=Hn.dot(Ru),c=bi.dot(bi),h=bi.dot(Ru),u=o*c-a*a;if(u===0)return s.set(0,0,0),null;let d=1/u,f=(c*l-a*h)*d,p=(o*h-a*l)*d;return s.set(1-f-p,p,f)}static 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this.a.fromBufferAttribute(e,t),this.b.fromBufferAttribute(e,n),this.c.fromBufferAttribute(e,i),this}clone(){return new this.constructor().copy(this)}copy(e){return this.a.copy(e.a),this.b.copy(e.b),this.c.copy(e.c),this}getArea(){return Hn.subVectors(this.c,this.b),bi.subVectors(this.a,this.b),Hn.cross(bi).length()*.5}getMidpoint(e){return e.addVectors(this.a,this.b).add(this.c).multiplyScalar(1/3)}getNormal(e){return r.getNormal(this.a,this.b,this.c,e)}getPlane(e){return e.setFromCoplanarPoints(this.a,this.b,this.c)}getBarycoord(e,t){return r.getBarycoord(e,this.a,this.b,this.c,t)}getInterpolation(e,t,n,i,s){return r.getInterpolation(e,this.a,this.b,this.c,t,n,i,s)}containsPoint(e){return r.containsPoint(e,this.a,this.b,this.c)}isFrontFacing(e){return r.isFrontFacing(this.a,this.b,this.c,e)}intersectsBox(e){return e.intersectsTriangle(this)}closestPointToPoint(e,t){let n=this.a,i=this.b,s=this.c,o,a;ar.subVectors(i,n),lr.subVectors(s,n),Cu.subVectors(e,n);let l=ar.dot(Cu),c=lr.dot(Cu);if(l<=0&&c<=0)return t.copy(n);Iu.subVectors(e,i);let h=ar.dot(Iu),u=lr.dot(Iu);if(h>=0&&u<=h)return t.copy(i);let d=l*u-h*c;if(d<=0&&l>=0&&h<=0)return o=l/(l-h),t.copy(n).addScaledVector(ar,o);Pu.subVectors(e,s);let f=ar.dot(Pu),p=lr.dot(Pu);if(p>=0&&f<=p)return t.copy(s);let _=f*c-l*p;if(_<=0&&c>=0&&p<=0)return a=c/(c-p),t.copy(n).addScaledVector(lr,a);let g=h*p-f*u;if(g<=0&&u-h>=0&&f-p>=0)return Ap.subVectors(s,i),a=(u-h)/(u-h+(f-p)),t.copy(i).addScaledVector(Ap,a);let m=1/(g+_+d);return o=_*m,a=d*m,t.copy(n).addScaledVector(ar,o).addScaledVector(lr,a)}equals(e){return e.a.equals(this.a)&&e.b.equals(this.b)&&e.c.equals(this.c)}},Ft=class{constructor(e=new R(1/0,1/0,1/0),t=new R(-1/0,-1/0,-1/0)){this.isBox3=!0,this.min=e,this.max=t}set(e,t){return this.min.copy(e),this.max.copy(t),this}setFromArray(e){this.makeEmpty();for(let t=0,n=e.length;t<n;t+=3)this.expandByPoint(Wn.fromArray(e,t));return this}setFromBufferAttribute(e){this.makeEmpty();for(let 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this.min.addScalar(-e),this.max.addScalar(e),this}expandByObject(e,t=!1){e.updateWorldMatrix(!1,!1);let n=e.geometry;if(n!==void 0){let s=n.getAttribute("position");if(t===!0&&s!==void 0&&e.isInstancedMesh!==!0)for(let o=0,a=s.count;o<a;o++)e.isMesh===!0?e.getVertexPosition(o,Wn):Wn.fromBufferAttribute(s,o),Wn.applyMatrix4(e.matrixWorld),this.expandByPoint(Wn);else e.boundingBox!==void 0?(e.boundingBox===null&&e.computeBoundingBox(),Yl.copy(e.boundingBox)):(n.boundingBox===null&&n.computeBoundingBox(),Yl.copy(n.boundingBox)),Yl.applyMatrix4(e.matrixWorld),this.union(Yl)}let i=e.children;for(let s=0,o=i.length;s<o;s++)this.expandByObject(i[s],t);return this}containsPoint(e){return e.x>=this.min.x&&e.x<=this.max.x&&e.y>=this.min.y&&e.y<=this.max.y&&e.z>=this.min.z&&e.z<=this.max.z}containsBox(e){return this.min.x<=e.min.x&&e.max.x<=this.max.x&&this.min.y<=e.min.y&&e.max.y<=this.max.y&&this.min.z<=e.min.z&&e.max.z<=this.max.z}getParameter(e,t){return t.set((e.x-this.min.x)/(this.max.x-this.min.x),(e.y-this.min.y)/(this.max.y-this.min.y),(e.z-this.min.z)/(this.max.z-this.min.z))}intersectsBox(e){return e.max.x>=this.min.x&&e.min.x<=this.max.x&&e.max.y>=this.min.y&&e.min.y<=this.max.y&&e.max.z>=this.min.z&&e.min.z<=this.max.z}intersectsSphere(e){return this.clampPoint(e.center,Wn),Wn.distanceToSquared(e.center)<=e.radius*e.radius}intersectsPlane(e){let t,n;return e.normal.x>0?(t=e.normal.x*this.min.x,n=e.normal.x*this.max.x):(t=e.normal.x*this.max.x,n=e.normal.x*this.min.x),e.normal.y>0?(t+=e.normal.y*this.min.y,n+=e.normal.y*this.max.y):(t+=e.normal.y*this.max.y,n+=e.normal.y*this.min.y),e.normal.z>0?(t+=e.normal.z*this.min.z,n+=e.normal.z*this.max.z):(t+=e.normal.z*this.max.z,n+=e.normal.z*this.min.z),t<=-e.constant&&n>=-e.constant}intersectsTriangle(e){if(this.isEmpty())return!1;this.getCenter(bo),Zl.subVectors(this.max,bo),cr.subVectors(e.a,bo),hr.subVectors(e.b,bo),ur.subVectors(e.c,bo),qi.subVectors(hr,cr),Yi.subVectors(ur,hr),ds.subVectors(cr,ur);let t=[0,-qi.z,qi.y,0,-Yi.z,Yi.y,0,-ds.z,ds.y,qi.z,0,-qi.x,Yi.z,0,-Yi.x,ds.z,0,-ds.x,-qi.y,qi.x,0,-Yi.y,Yi.x,0,-ds.y,ds.x,0];return!Uu(t,cr,hr,ur,Zl)||(t=[1,0,0,0,1,0,0,0,1],!Uu(t,cr,hr,ur,Zl))?!1:(Kl.crossVectors(qi,Yi),t=[Kl.x,Kl.y,Kl.z],Uu(t,cr,hr,ur,Zl))}clampPoint(e,t){return t.copy(e).clamp(this.min,this.max)}distanceToPoint(e){return this.clampPoint(e,Wn).distanceTo(e)}getBoundingSphere(e){return this.isEmpty()?e.makeEmpty():(this.getCenter(e.center),e.radius=this.getSize(Wn).length()*.5),e}intersect(e){return this.min.max(e.min),this.max.min(e.max),this.isEmpty()&&this.makeEmpty(),this}union(e){return this.min.min(e.min),this.max.max(e.max),this}applyMatrix4(e){return this.isEmpty()?this:(Ai[0].set(this.min.x,this.min.y,this.min.z).applyMatrix4(e),Ai[1].set(this.min.x,this.min.y,this.max.z).applyMatrix4(e),Ai[2].set(this.min.x,this.max.y,this.min.z).applyMatrix4(e),Ai[3].set(this.min.x,this.max.y,this.max.z).applyMatrix4(e),Ai[4].set(this.max.x,this.min.y,this.min.z).applyMatrix4(e),Ai[5].set(this.max.x,this.min.y,this.max.z).applyMatrix4(e),Ai[6].set(this.max.x,this.max.y,this.min.z).applyMatrix4(e),Ai[7].set(this.max.x,this.max.y,this.max.z).applyMatrix4(e),this.setFromPoints(Ai),this)}translate(e){return this.min.add(e),this.max.add(e),this}equals(e){return e.min.equals(this.min)&&e.max.equals(this.max)}toJSON(){return{min:this.min.toArray(),max:this.max.toArray()}}fromJSON(e){return this.min.fromArray(e.min),this.max.fromArray(e.max),this}},Ai=[new R,new R,new R,new R,new R,new R,new R,new R],Wn=new R,Yl=new Ft,cr=new R,hr=new R,ur=new R,qi=new R,Yi=new R,ds=new R,bo=new R,Zl=new R,Kl=new R,fs=new R;function Uu(r,e,t,n,i){for(let s=0,o=r.length-3;s<=o;s+=3){fs.fromArray(r,s);let a=i.x*Math.abs(fs.x)+i.y*Math.abs(fs.y)+i.z*Math.abs(fs.z),l=e.dot(fs),c=t.dot(fs),h=n.dot(fs);if(Math.max(-Math.max(l,c,h),Math.min(l,c,h))>a)return!1}return!0}var Ri=e0();function e0(){let r=new ArrayBuffer(4),e=new Float32Array(r),t=new Uint32Array(r),n=new Uint32Array(512),i=new Uint32Array(512);for(let l=0;l<256;++l){let c=l-127;c<-27?(n[l]=0,n[l|256]=32768,i[l]=24,i[l|256]=24):c<-14?(n[l]=1024>>-c-14,n[l|256]=1024>>-c-14|32768,i[l]=-c-1,i[l|256]=-c-1):c<=15?(n[l]=c+15<<10,n[l|256]=c+15<<10|32768,i[l]=13,i[l|256]=13):c<128?(n[l]=31744,n[l|256]=64512,i[l]=24,i[l|256]=24):(n[l]=31744,n[l|256]=64512,i[l]=13,i[l|256]=13)}let s=new Uint32Array(2048),o=new Uint32Array(64),a=new Uint32Array(64);for(let l=1;l<1024;++l){let c=l<<13,h=0;for(;(c&8388608)===0;)c<<=1,h-=8388608;c&=-8388609,h+=947912704,s[l]=c|h}for(let l=1024;l<2048;++l)s[l]=939524096+(l-1024<<13);for(let l=1;l<31;++l)o[l]=l<<23;o[31]=1199570944,o[32]=2147483648;for(let l=33;l<63;++l)o[l]=2147483648+(l-32<<23);o[63]=3347054592;for(let l=1;l<64;++l)l!==32&&(a[l]=1024);return{floatView:e,uint32View:t,baseTable:n,shiftTable:i,mantissaTable:s,exponentTable:o,offsetTable:a}}function mn(r){Math.abs(r)>65504&&de("DataUtils.toHalfFloat(): Value out of range."),r=He(r,-65504,65504),Ri.floatView[0]=r;let e=Ri.uint32View[0],t=e>>23&511;return Ri.baseTable[t]+((e&8388607)>>Ri.shiftTable[t])}function Do(r){let e=r>>10;return Ri.uint32View[0]=Ri.mantissaTable[Ri.offsetTable[e]+(r&1023)]+Ri.exponentTable[e],Ri.floatView[0]}var Bc=class{static toHalfFloat(e){return mn(e)}static fromHalfFloat(e){return Do(e)}},zt=new R,Jl=new J,t0=0,Qe=class extends xn{constructor(e,t,n=!1){if(super(),Array.isArray(e))throw new TypeError("THREE.BufferAttribute: array should be a Typed Array.");this.isBufferAttribute=!0,Object.defineProperty(this,"id",{value:t0++}),this.name="",this.array=e,this.itemSize=t,this.count=e!==void 0?e.length/t:0,this.normalized=n,this.usage=Ul,this.updateRanges=[],this.gpuType=en,this.version=0}onUploadCallback(){}set needsUpdate(e){e===!0&&this.version++}setUsage(e){return this.usage=e,this}addUpdateRange(e,t){this.updateRanges.push({start:e,count:t})}clearUpdateRanges(){this.updateRanges.length=0}copy(e){return this.name=e.name,this.array=new 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t=0,n=this.count;t<n;t++)zt.fromBufferAttribute(this,t),zt.transformDirection(e),this.setXYZ(t,zt.x,zt.y,zt.z);return this}set(e,t=0){return this.array.set(e,t),this}getComponent(e,t){let n=this.array[e*this.itemSize+t];return this.normalized&&(n=ln(n,this.array)),n}setComponent(e,t,n){return this.normalized&&(n=Ke(n,this.array)),this.array[e*this.itemSize+t]=n,this}getX(e){let t=this.array[e*this.itemSize];return this.normalized&&(t=ln(t,this.array)),t}setX(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize]=t,this}getY(e){let t=this.array[e*this.itemSize+1];return this.normalized&&(t=ln(t,this.array)),t}setY(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize+1]=t,this}getZ(e){let t=this.array[e*this.itemSize+2];return this.normalized&&(t=ln(t,this.array)),t}setZ(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize+2]=t,this}getW(e){let t=this.array[e*this.itemSize+3];return this.normalized&&(t=ln(t,this.array)),t}setW(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize+3]=t,this}setXY(e,t,n){return e*=this.itemSize,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array)),this.array[e+0]=t,this.array[e+1]=n,this}setXYZ(e,t,n,i){return e*=this.itemSize,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array),i=Ke(i,this.array)),this.array[e+0]=t,this.array[e+1]=n,this.array[e+2]=i,this}setXYZW(e,t,n,i,s){return e*=this.itemSize,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array),i=Ke(i,this.array),s=Ke(s,this.array)),this.array[e+0]=t,this.array[e+1]=n,this.array[e+2]=i,this.array[e+3]=s,this}onUpload(e){return this.onUploadCallback=e,this}clone(){return new this.constructor(this.array,this.itemSize).copy(this)}toJSON(){let e={itemSize:this.itemSize,type:this.array.constructor.name,array:Array.from(this.array),normalized:this.normalized};return e.name=this.name,e.usage=this.usage,e.gpuType=this.gpuType,e}dispose(){this.dispatchEvent({type:"dispose"})}},zc=class extends Qe{constructor(e,t,n){super(new Int8Array(e),t,n)}},kc=class extends Qe{constructor(e,t,n){super(new Uint8Array(e),t,n)}},Vc=class extends Qe{constructor(e,t,n){super(new Uint8ClampedArray(e),t,n)}},Gc=class extends Qe{constructor(e,t,n){super(new Int16Array(e),t,n)}},Ir=class extends Qe{constructor(e,t,n){super(new Uint16Array(e),t,n)}},Hc=class extends Qe{constructor(e,t,n){super(new Int32Array(e),t,n)}},Pr=class extends Qe{constructor(e,t,n){super(new Uint32Array(e),t,n)}},Wc=class extends Qe{constructor(e,t,n){super(new Uint16Array(e),t,n),this.isFloat16BufferAttribute=!0}getX(e){let t=Do(this.array[e*this.itemSize]);return this.normalized&&(t=ln(t,this.array)),t}setX(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize]=mn(t),this}getY(e){let t=Do(this.array[e*this.itemSize+1]);return this.normalized&&(t=ln(t,this.array)),t}setY(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize+1]=mn(t),this}getZ(e){let t=Do(this.array[e*this.itemSize+2]);return this.normalized&&(t=ln(t,this.array)),t}setZ(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize+2]=mn(t),this}getW(e){let t=Do(this.array[e*this.itemSize+3]);return this.normalized&&(t=ln(t,this.array)),t}setW(e,t){return this.normalized&&(t=Ke(t,this.array)),this.array[e*this.itemSize+3]=mn(t),this}setXY(e,t,n){return e*=this.itemSize,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array)),this.array[e+0]=mn(t),this.array[e+1]=mn(n),this}setXYZ(e,t,n,i){return e*=this.itemSize,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array),i=Ke(i,this.array)),this.array[e+0]=mn(t),this.array[e+1]=mn(n),this.array[e+2]=mn(i),this}setXYZW(e,t,n,i,s){return e*=this.itemSize,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array),i=Ke(i,this.array),s=Ke(s,this.array)),this.array[e+0]=mn(t),this.array[e+1]=mn(n),this.array[e+2]=mn(i),this.array[e+3]=mn(s),this}},fe=class extends Qe{constructor(e,t,n){super(new Float32Array(e),t,n)}},n0=new Ft,To=new R,Fu=new R,Nt=class{constructor(e=new R,t=-1){this.isSphere=!0,this.center=e,this.radius=t}set(e,t){return this.center.copy(e),this.radius=t,this}setFromPoints(e,t){let n=this.center;t!==void 0?n.copy(t):n0.setFromPoints(e).getCenter(n);let i=0;for(let s=0,o=e.length;s<o;s++)i=Math.max(i,n.distanceToSquared(e[s]));return this.radius=Math.sqrt(i),this}copy(e){return this.center.copy(e.center),this.radius=e.radius,this}isEmpty(){return this.radius<0}makeEmpty(){return this.center.set(0,0,0),this.radius=-1,this}containsPoint(e){return e.distanceToSquared(this.center)<=this.radius*this.radius}distanceToPoint(e){return e.distanceTo(this.center)-this.radius}intersectsSphere(e){let t=this.radius+e.radius;return e.center.distanceToSquared(this.center)<=t*t}intersectsBox(e){return e.intersectsSphere(this)}intersectsPlane(e){return Math.abs(e.distanceToPoint(this.center))<=this.radius}clampPoint(e,t){let n=this.center.distanceToSquared(e);return t.copy(e),n>this.radius*this.radius&&(t.sub(this.center).normalize(),t.multiplyScalar(this.radius).add(this.center)),t}getBoundingBox(e){return this.isEmpty()?(e.makeEmpty(),e):(e.set(this.center,this.center),e.expandByScalar(this.radius),e)}applyMatrix4(e){return this.center.applyMatrix4(e),this.radius=this.radius*e.getMaxScaleOnAxis(),this}translate(e){return this.center.add(e),this}expandByPoint(e){if(this.isEmpty())return this.center.copy(e),this.radius=0,this;To.subVectors(e,this.center);let t=To.lengthSq();if(t>this.radius*this.radius){let n=Math.sqrt(t),i=(n-this.radius)*.5;this.center.addScaledVector(To,i/n),this.radius+=i}return this}union(e){return e.isEmpty()?this:this.isEmpty()?(this.copy(e),this):(this.center.equals(e.center)===!0?this.radius=Math.max(this.radius,e.radius):(Fu.subVectors(e.center,this.center).setLength(e.radius),this.expandByPoint(To.copy(e.center).add(Fu)),this.expandByPoint(To.copy(e.center).sub(Fu))),this)}equals(e){return e.center.equals(this.center)&&e.radius===this.radius}clone(){return new this.constructor().copy(this)}toJSON(){return{radius:this.radius,center:this.center.toArray()}}fromJSON(e){return this.radius=e.radius,this.center.fromArray(e.center),this}},i0=0,Pn=new ze,Ou=new st,dr=new R,bn=new Ft,Ao=new Ft,Wt=new R,Oe=class r extends xn{constructor(){super(),this.isBufferGeometry=!0,Object.defineProperty(this,"id",{value:i0++}),this.uuid=Tn(),this.name="",this.type="BufferGeometry",this.index=null,this.indirect=null,this.indirectOffset=0,this.attributes={},this.morphAttributes={},this.morphTargetsRelative=!1,this.groups=[],this.boundingBox=null,this.boundingSphere=null,this.drawRange={start:0,count:1/0},this.userData={},this._transformed=!1}getIndex(){return this.index}setIndex(e){return Array.isArray(e)?this.index=new(E_(e)?Pr:Ir)(e,1):this.index=e,this}setIndirect(e,t=0){return this.indirect=e,this.indirectOffset=t,this}getIndirect(){return this.indirect}getAttribute(e){return this.attributes[e]}setAttribute(e,t){return this.attributes[e]=t,this}deleteAttribute(e){return delete this.attributes[e],this}hasAttribute(e){return this.attributes[e]!==void 0}addGroup(e,t,n=0){this.groups.push({start:e,count:t,materialIndex:n})}clearGroups(){this.groups=[]}setDrawRange(e,t){this.drawRange.start=e,this.drawRange.count=t}applyMatrix4(e){let t=this.attributes.position;t!==void 0&&(t.applyMatrix4(e),t.needsUpdate=!0);let n=this.attributes.normal;if(n!==void 0){let s=new qe().getNormalMatrix(e);n.applyNormalMatrix(s),n.needsUpdate=!0}let i=this.attributes.tangent;return i!==void 0&&(i.transformDirection(e),i.needsUpdate=!0),this.boundingBox!==null&&this.computeBoundingBox(),this.boundingSphere!==null&&this.computeBoundingSphere(),this._transformed=!0,this}applyQuaternion(e){return Pn.makeRotationFromQuaternion(e),this.applyMatrix4(Pn),this}rotateX(e){return Pn.makeRotationX(e),this.applyMatrix4(Pn),this}rotateY(e){return Pn.makeRotationY(e),this.applyMatrix4(Pn),this}rotateZ(e){return Pn.makeRotationZ(e),this.applyMatrix4(Pn),this}translate(e,t,n){return Pn.makeTranslation(e,t,n),this.applyMatrix4(Pn),this}scale(e,t,n){return Pn.makeScale(e,t,n),this.applyMatrix4(Pn),this}lookAt(e){return Ou.lookAt(e),Ou.updateMatrix(),this.applyMatrix4(Ou.matrix),this}center(){return this.computeBoundingBox(),this.boundingBox.getCenter(dr).negate(),this.translate(dr.x,dr.y,dr.z),this}setFromPoints(e){let t=this.getAttribute("position");if(t===void 0){let n=[];for(let i=0,s=e.length;i<s;i++){let o=e[i];n.push(o.x,o.y,o.z||0)}this.setAttribute("position",new fe(n,3))}else{let n=Math.min(e.length,t.count);for(let i=0;i<n;i++){let s=e[i];t.setXYZ(i,s.x,s.y,s.z||0)}e.length>t.count&&de("BufferGeometry: Buffer size too small for points data. Use .dispose() and create a new geometry."),t.needsUpdate=!0}return this}computeBoundingBox(){this.boundingBox===null&&(this.boundingBox=new Ft);let e=this.attributes.position,t=this.morphAttributes.position;if(e&&e.isGLBufferAttribute){Pe("BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box.",this),this.boundingBox.set(new R(-1/0,-1/0,-1/0),new R(1/0,1/0,1/0));return}if(e!==void 0){if(this.boundingBox.setFromBufferAttribute(e),t)for(let n=0,i=t.length;n<i;n++){let s=t[n];bn.setFromBufferAttribute(s),this.morphTargetsRelative?(Wt.addVectors(this.boundingBox.min,bn.min),this.boundingBox.expandByPoint(Wt),Wt.addVectors(this.boundingBox.max,bn.max),this.boundingBox.expandByPoint(Wt)):(this.boundingBox.expandByPoint(bn.min),this.boundingBox.expandByPoint(bn.max))}}else this.boundingBox.makeEmpty();(isNaN(this.boundingBox.min.x)||isNaN(this.boundingBox.min.y)||isNaN(this.boundingBox.min.z))&&Pe('BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.',this)}computeBoundingSphere(){this.boundingSphere===null&&(this.boundingSphere=new Nt);let e=this.attributes.position,t=this.morphAttributes.position;if(e&&e.isGLBufferAttribute){Pe("BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere.",this),this.boundingSphere.set(new R,1/0);return}if(e){let n=this.boundingSphere.center;if(bn.setFromBufferAttribute(e),t)for(let s=0,o=t.length;s<o;s++){let a=t[s];Ao.setFromBufferAttribute(a),this.morphTargetsRelative?(Wt.addVectors(bn.min,Ao.min),bn.expandByPoint(Wt),Wt.addVectors(bn.max,Ao.max),bn.expandByPoint(Wt)):(bn.expandByPoint(Ao.min),bn.expandByPoint(Ao.max))}bn.getCenter(n);let i=0;for(let s=0,o=e.count;s<o;s++)Wt.fromBufferAttribute(e,s),i=Math.max(i,n.distanceToSquared(Wt));if(t)for(let s=0,o=t.length;s<o;s++){let a=t[s],l=this.morphTargetsRelative;for(let c=0,h=a.count;c<h;c++)Wt.fromBufferAttribute(a,c),l&&(dr.fromBufferAttribute(e,c),Wt.add(dr)),i=Math.max(i,n.distanceToSquared(Wt))}this.boundingSphere.radius=Math.sqrt(i),isNaN(this.boundingSphere.radius)&&Pe('BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.',this)}}computeTangents(){let e=this.index,t=this.attributes;if(e===null||t.position===void 0||t.normal===void 0||t.uv===void 0){Pe("BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)");return}let n=t.position,i=t.normal,s=t.uv,o=this.getAttribute("tangent");(o===void 0||o.count!==n.count)&&(o=new Qe(new Float32Array(4*n.count),4),this.setAttribute("tangent",o));let a=[],l=[];for(let v=0;v<n.count;v++)a[v]=new R,l[v]=new R;let c=new R,h=new R,u=new R,d=new J,f=new J,p=new J,_=new R,g=new R;function m(v,E,I){c.fromBufferAttribute(n,v),h.fromBufferAttribute(n,E),u.fromBufferAttribute(n,I),d.fromBufferAttribute(s,v),f.fromBufferAttribute(s,E),p.fromBufferAttribute(s,I),h.sub(c),u.sub(c),f.sub(d),p.sub(d);let P=1/(f.x*p.y-p.x*f.y);isFinite(P)&&(_.copy(h).multiplyScalar(p.y).addScaledVector(u,-f.y).multiplyScalar(P),g.copy(u).multiplyScalar(f.x).addScaledVector(h,-p.x).multiplyScalar(P),a[v].add(_),a[E].add(_),a[I].add(_),l[v].add(g),l[E].add(g),l[I].add(g))}let y=this.groups;y.length===0&&(y=[{start:0,count:e.count}]);for(let v=0,E=y.length;v<E;++v){let I=y[v],P=I.start,F=I.count;for(let z=P,N=P+F;z<N;z+=3)m(e.getX(z+0),e.getX(z+1),e.getX(z+2))}let b=new R,x=new R,T=new R,S=new R;function w(v){T.fromBufferAttribute(i,v),S.copy(T);let E=a[v];b.copy(E),b.sub(T.multiplyScalar(T.dot(E))).normalize(),x.crossVectors(S,E);let P=x.dot(l[v])<0?-1:1;o.setXYZW(v,b.x,b.y,b.z,P)}for(let v=0,E=y.length;v<E;++v){let I=y[v],P=I.start,F=I.count;for(let z=P,N=P+F;z<N;z+=3)w(e.getX(z+0)),w(e.getX(z+1)),w(e.getX(z+2))}this._transformed=!0}computeVertexNormals(){let e=this.index,t=this.getAttribute("position");if(t!==void 0){let n=this.getAttribute("normal");if(n===void 0||n.count!==t.count)n=new Qe(new Float32Array(t.count*3),3),this.setAttribute("normal",n);else for(let d=0,f=n.count;d<f;d++)n.setXYZ(d,0,0,0);let i=new R,s=new R,o=new R,a=new R,l=new R,c=new R,h=new R,u=new R;if(e)for(let d=0,f=e.count;d<f;d+=3){let p=e.getX(d+0),_=e.getX(d+1),g=e.getX(d+2);i.fromBufferAttribute(t,p),s.fromBufferAttribute(t,_),o.fromBufferAttribute(t,g),h.subVectors(o,s),u.subVectors(i,s),h.cross(u),a.fromBufferAttribute(n,p),l.fromBufferAttribute(n,_),c.fromBufferAttribute(n,g),a.add(h),l.add(h),c.add(h),n.setXYZ(p,a.x,a.y,a.z),n.setXYZ(_,l.x,l.y,l.z),n.setXYZ(g,c.x,c.y,c.z)}else for(let d=0,f=t.count;d<f;d+=3)i.fromBufferAttribute(t,d+0),s.fromBufferAttribute(t,d+1),o.fromBufferAttribute(t,d+2),h.subVectors(o,s),u.subVectors(i,s),h.cross(u),n.setXYZ(d+0,h.x,h.y,h.z),n.setXYZ(d+1,h.x,h.y,h.z),n.setXYZ(d+2,h.x,h.y,h.z);this.normalizeNormals(),n.needsUpdate=!0}}normalizeNormals(){let e=this.attributes.normal;for(let t=0,n=e.count;t<n;t++)Wt.fromBufferAttribute(e,t),Wt.normalize(),e.setXYZ(t,Wt.x,Wt.y,Wt.z)}toNonIndexed(){function e(a,l){let c=a.array,h=a.itemSize,u=a.normalized,d=new c.constructor(l.length*h),f=0,p=0;for(let _=0,g=l.length;_<g;_++){a.isInterleavedBufferAttribute?f=l[_]*a.data.stride+a.offset:f=l[_]*h;for(let m=0;m<h;m++)d[p++]=c[f++]}return new Qe(d,h,u)}if(this.index===null)return de("BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed."),this;let t=new r,n=this.index.array,i=this.attributes;for(let a in i){let l=i[a],c=e(l,n);t.setAttribute(a,c)}let s=this.morphAttributes;for(let a in s){let l=[],c=s[a];for(let h=0,u=c.length;h<u;h++){let d=c[h],f=e(d,n);l.push(f)}t.morphAttributes[a]=l}t.morphTargetsRelative=this.morphTargetsRelative;let o=this.groups;for(let a=0,l=o.length;a<l;a++){let c=o[a];t.addGroup(c.start,c.count,c.materialIndex)}return t}toJSON(){let e={metadata:{version:4.7,type:"BufferGeometry",generator:"BufferGeometry.toJSON"}};if(e.uuid=this.uuid,e.type=this.parameters!==void 0&&this._transformed===!0?"BufferGeometry":this.type,e.name=this.name,Object.keys(this.userData).length>0&&(e.userData=this.userData),this.parameters!==void 0&&this._transformed!==!0){let l=this.parameters;for(let c in l)l[c]!==void 0&&(e[c]=l[c]);return e}e.data={attributes:{}};let t=this.index;t!==null&&(e.data.index={type:t.array.constructor.name,array:Array.prototype.slice.call(t.array)});let n=this.attributes;for(let l in n){let c=n[l];e.data.attributes[l]=c.toJSON(e.data)}let i={},s=!1;for(let l in this.morphAttributes){let c=this.morphAttributes[l],h=[];for(let u=0,d=c.length;u<d;u++){let f=c[u];h.push(f.toJSON(e.data))}h.length>0&&(i[l]=h,s=!0)}s&&(e.data.morphAttributes=i,e.data.morphTargetsRelative=this.morphTargetsRelative);let o=this.groups;o.length>0&&(e.data.groups=JSON.parse(JSON.stringify(o)));let a=this.boundingSphere;return a!==null&&(e.data.boundingSphere=a.toJSON()),e}clone(){return new this.constructor().copy(this)}copy(e){this.index=null,this.attributes={},this.morphAttributes={},this.groups=[],this.boundingBox=null,this.boundingSphere=null;let t={};this.name=e.name;let n=e.index;n!==null&&this.setIndex(n.clone());let i=e.attributes;for(let c in i){let h=i[c];this.setAttribute(c,h.clone(t))}let s=e.morphAttributes;for(let c in s){let h=[],u=s[c];for(let d=0,f=u.length;d<f;d++)h.push(u[d].clone(t));this.morphAttributes[c]=h}this.morphTargetsRelative=e.morphTargetsRelative;let o=e.groups;for(let c=0,h=o.length;c<h;c++){let u=o[c];this.addGroup(u.start,u.count,u.materialIndex)}let a=e.boundingBox;a!==null&&(this.boundingBox=a.clone());let l=e.boundingSphere;return l!==null&&(this.boundingSphere=l.clone()),this.drawRange.start=e.drawRange.start,this.drawRange.count=e.drawRange.count,this.userData=e.userData,this._transformed=e._transformed,this}dispose(){this.dispatchEvent({type:"dispose"})}},ci=class{constructor(e,t){this.isInterleavedBuffer=!0,this.array=e,this.stride=t,this.count=e!==void 0?e.length/t:0,this.usage=Ul,this.updateRanges=[],this.version=0,this.uuid=Tn()}onUploadCallback(){}set needsUpdate(e){e===!0&&this.version++}setUsage(e){return this.usage=e,this}addUpdateRange(e,t){this.updateRanges.push({start:e,count:t})}clearUpdateRanges(){this.updateRanges.length=0}copy(e){return this.array=new e.array.constructor(e.array),this.count=e.count,this.stride=e.stride,this.usage=e.usage,this}copyAt(e,t,n){e*=this.stride,n*=t.stride;for(let i=0,s=this.stride;i<s;i++)this.array[e+i]=t.array[n+i];return this}set(e,t=0){return this.array.set(e,t),this}clone(e){e.arrayBuffers===void 0&&(e.arrayBuffers={}),this.array.buffer._uuid===void 0&&(this.array.buffer._uuid=Tn()),e.arrayBuffers[this.array.buffer._uuid]===void 0&&(e.arrayBuffers[this.array.buffer._uuid]=this.array.slice(0).buffer);let t=new this.array.constructor(e.arrayBuffers[this.array.buffer._uuid]),n=new this.constructor(t,this.stride);return n.setUsage(this.usage),n}onUpload(e){return this.onUploadCallback=e,this}toJSON(e){e.arrayBuffers===void 0&&(e.arrayBuffers={}),this.array.buffer._uuid===void 0&&(this.array.buffer._uuid=Tn()),e.arrayBuffers[this.array.buffer._uuid]===void 0&&(e.arrayBuffers[this.array.buffer._uuid]=Array.from(new Uint32Array(this.array.buffer)));let t={uuid:this.uuid,buffer:this.array.buffer._uuid,type:this.array.constructor.name,stride:this.stride};return t.usage=this.usage,t}},an=new R,Kn=class r{constructor(e,t,n,i=!1){this.isInterleavedBufferAttribute=!0,this.name="",this.data=e,this.itemSize=t,this.offset=n,this.normalized=i}get count(){return this.data.count}get array(){return this.data.array}set needsUpdate(e){this.data.needsUpdate=e}applyMatrix4(e){for(let t=0,n=this.data.count;t<n;t++)an.fromBufferAttribute(this,t),an.applyMatrix4(e),this.setXYZ(t,an.x,an.y,an.z);return this}applyNormalMatrix(e){for(let t=0,n=this.count;t<n;t++)an.fromBufferAttribute(this,t),an.applyNormalMatrix(e),this.setXYZ(t,an.x,an.y,an.z);return this}transformDirection(e){for(let t=0,n=this.count;t<n;t++)an.fromBufferAttribute(this,t),an.transformDirection(e),this.setXYZ(t,an.x,an.y,an.z);return this}getComponent(e,t){let n=this.array[e*this.data.stride+this.offset+t];return this.normalized&&(n=ln(n,this.array)),n}setComponent(e,t,n){return this.normalized&&(n=Ke(n,this.array)),this.data.array[e*this.data.stride+this.offset+t]=n,this}setX(e,t){return this.normalized&&(t=Ke(t,this.array)),this.data.array[e*this.data.stride+this.offset]=t,this}setY(e,t){return this.normalized&&(t=Ke(t,this.array)),this.data.array[e*this.data.stride+this.offset+1]=t,this}setZ(e,t){return this.normalized&&(t=Ke(t,this.array)),this.data.array[e*this.data.stride+this.offset+2]=t,this}setW(e,t){return this.normalized&&(t=Ke(t,this.array)),this.data.array[e*this.data.stride+this.offset+3]=t,this}getX(e){let t=this.data.array[e*this.data.stride+this.offset];return this.normalized&&(t=ln(t,this.array)),t}getY(e){let t=this.data.array[e*this.data.stride+this.offset+1];return this.normalized&&(t=ln(t,this.array)),t}getZ(e){let t=this.data.array[e*this.data.stride+this.offset+2];return this.normalized&&(t=ln(t,this.array)),t}getW(e){let t=this.data.array[e*this.data.stride+this.offset+3];return this.normalized&&(t=ln(t,this.array)),t}setXY(e,t,n){return e=e*this.data.stride+this.offset,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array)),this.data.array[e+0]=t,this.data.array[e+1]=n,this}setXYZ(e,t,n,i){return e=e*this.data.stride+this.offset,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array),i=Ke(i,this.array)),this.data.array[e+0]=t,this.data.array[e+1]=n,this.data.array[e+2]=i,this}setXYZW(e,t,n,i,s){return e=e*this.data.stride+this.offset,this.normalized&&(t=Ke(t,this.array),n=Ke(n,this.array),i=Ke(i,this.array),s=Ke(s,this.array)),this.data.array[e+0]=t,this.data.array[e+1]=n,this.data.array[e+2]=i,this.data.array[e+3]=s,this}clone(e){if(e===void 0){Rr("InterleavedBufferAttribute.clone(): Cloning an interleaved buffer attribute will de-interleave buffer data.");let t=[];for(let n=0;n<this.count;n++){let i=n*this.data.stride+this.offset;for(let s=0;s<this.itemSize;s++)t.push(this.data.array[i+s])}return new Qe(new this.array.constructor(t),this.itemSize,this.normalized)}else return e.interleavedBuffers===void 0&&(e.interleavedBuffers={}),e.interleavedBuffers[this.data.uuid]===void 0&&(e.interleavedBuffers[this.data.uuid]=this.data.clone(e)),new r(e.interleavedBuffers[this.data.uuid],this.itemSize,this.offset,this.normalized)}toJSON(e){if(e===void 0){Rr("InterleavedBufferAttribute.toJSON(): Serializing an interleaved buffer attribute will de-interleave buffer data.");let t=[];for(let n=0;n<this.count;n++){let i=n*this.data.stride+this.offset;for(let s=0;s<this.itemSize;s++)t.push(this.data.array[i+s])}return{itemSize:this.itemSize,type:this.array.constructor.name,array:t,normalized:this.normalized}}else return e.interleavedBuffers===void 0&&(e.interleavedBuffers={}),e.interleavedBuffers[this.data.uuid]===void 0&&(e.interleavedBuffers[this.data.uuid]=this.data.toJSON(e)),{isInterleavedBufferAttribute:!0,itemSize:this.itemSize,data:this.data.uuid,offset:this.offset,normalized:this.normalized}}},Bu=new R,s0=new R,r0=new qe,gn=class{constructor(e=new R(1,0,0),t=0){this.isPlane=!0,this.normal=e,this.constant=t}set(e,t){return this.normal.copy(e),this.constant=t,this}setComponents(e,t,n,i){return this.normal.set(e,t,n),this.constant=i,this}setFromNormalAndCoplanarPoint(e,t){return this.normal.copy(e),this.constant=-t.dot(this.normal),this}setFromCoplanarPoints(e,t,n){let i=Bu.subVectors(n,t).cross(s0.subVectors(e,t)).normalize();return this.setFromNormalAndCoplanarPoint(i,e),this}copy(e){return this.normal.copy(e.normal),this.constant=e.constant,this}normalize(){let e=1/this.normal.length();return this.normal.multiplyScalar(e),this.constant*=e,this}negate(){return this.constant*=-1,this.normal.negate(),this}distanceToPoint(e){return this.normal.dot(e)+this.constant}distanceToSphere(e){return this.distanceToPoint(e.center)-e.radius}projectPoint(e,t){return t.copy(e).addScaledVector(this.normal,-this.distanceToPoint(e))}intersectLine(e,t,n=!0){let i=e.delta(Bu),s=this.normal.dot(i);if(s===0)return this.distanceToPoint(e.start)===0?t.copy(e.start):null;let o=-(e.start.dot(this.normal)+this.constant)/s;return n===!0&&(o<0||o>1)?null:t.copy(e.start).addScaledVector(i,o)}intersectsLine(e){let t=this.distanceToPoint(e.start),n=this.distanceToPoint(e.end);return t<0&&n>0||n<0&&t>0}intersectsBox(e){return e.intersectsPlane(this)}intersectsSphere(e){return e.intersectsPlane(this)}coplanarPoint(e){return e.copy(this.normal).multiplyScalar(-this.constant)}applyMatrix4(e,t){let n=t||r0.getNormalMatrix(e),i=this.coplanarPoint(Bu).applyMatrix4(e),s=this.normal.applyMatrix3(n).normalize();return this.constant=-i.dot(s),this}translate(e){return this.constant-=e.dot(this.normal),this}equals(e){return e.normal.equals(this.normal)&&e.constant===this.constant}clone(){return new this.constructor().copy(this)}toJSON(){return{normal:this.normal.toArray(),constant:this.constant}}fromJSON(e){return this.normal.fromArray(e.normal),this.constant=e.constant,this}},o0=0,vt=class extends xn{constructor(){super(),this.isMaterial=!0,Object.defineProperty(this,"id",{value:o0++}),this.uuid=Tn(),this.name="",this.type="Material",this.blending=Ys,this.side=ei,this.vertexColors=!1,this.opacity=1,this.transparent=!1,this.alphaHash=!1,this.blendSrc=Gh,this.blendDst=Hh,this.blendEquation=ls,this.blendSrcAlpha=null,this.blendDstAlpha=null,this.blendEquationAlpha=null,this.blendColor=new ce(0,0,0),this.blendAlpha=0,this.depthFunc=As,this.depthTest=!0,this.depthWrite=!0,this.stencilWriteMask=255,this.stencilFunc=qd,this.stencilRef=0,this.stencilFuncMask=255,this.stencilFail=Oo,this.stencilZFail=Oo,this.stencilZPass=Oo,this.stencilWrite=!1,this.clippingPlanes=null,this.clipIntersection=!1,this.clipShadows=!1,this.shadowSide=null,this.colorWrite=!0,this.precision=null,this.polygonOffset=!1,this.polygonOffsetFactor=0,this.polygonOffsetUnits=0,this.dithering=!1,this.alphaToCoverage=!1,this.premultipliedAlpha=!1,this.forceSinglePass=!1,this.allowOverride=!0,this.visible=!0,this.toneMapped=!0,this.userData={},this.version=0,this._alphaTest=0}get alphaTest(){return this._alphaTest}set alphaTest(e){this._alphaTest>0!=e>0&&this.version++,this._alphaTest=e}onBeforeRender(){}onBeforeCompile(){}customProgramCacheKey(){return this.onBeforeCompile.toString()}setValues(e){if(e!==void 0)for(let t in e){let n=e[t];if(n===void 0){de(`Material: parameter '${t}' has value of undefined.`);continue}let i=this[t];if(i===void 0){de(`Material: '${t}' is not a property of THREE.${this.type}.`);continue}i&&i.isColor?i.set(n):i&&i.isVector2&&n&&n.isVector2||i&&i.isEuler&&n&&n.isEuler||i&&i.isVector3&&n&&n.isVector3?i.copy(n):this[t]=n}}toJSON(e){let t=e===void 0||typeof e=="string";t&&(e={textures:{},images:{}});let n={metadata:{version:4.7,type:"Material",generator:"Material.toJSON"}};n.uuid=this.uuid,n.type=this.type,n.blending=this.blending,n.side=this.side,n.shadowSide=this.shadowSide,n.vertexColors=this.vertexColors,n.opacity=this.opacity,n.transparent=this.transparent,n.blendSrc=this.blendSrc,n.blendDst=this.blendDst,n.blendEquation=this.blendEquation,n.blendSrcAlpha=this.blendSrcAlpha,n.blendDstAlpha=this.blendDstAlpha,n.blendEquationAlpha=this.blendEquationAlpha,n.blendColor=this.blendColor.getHex(),n.blendAlpha=this.blendAlpha,n.depthFunc=this.depthFunc,n.depthTest=this.depthTest,n.depthWrite=this.depthWrite,n.colorWrite=this.colorWrite,n.clipIntersection=this.clipIntersection,n.clipShadows=this.clipShadows,n.stencilWriteMask=this.stencilWriteMask,n.stencilFunc=this.stencilFunc,n.stencilRef=this.stencilRef,n.stencilFuncMask=this.stencilFuncMask,n.stencilFail=this.stencilFail,n.stencilZFail=this.stencilZFail,n.stencilZPass=this.stencilZPass,n.stencilWrite=this.stencilWrite,n.polygonOffset=this.polygonOffset,n.polygonOffsetFactor=this.polygonOffsetFactor,n.polygonOffsetUnits=this.polygonOffsetUnits,n.dithering=this.dithering,n.alphaTest=this.alphaTest,n.alphaHash=this.alphaHash,n.alphaToCoverage=this.alphaToCoverage,n.premultipliedAlpha=this.premultipliedAlpha,n.forceSinglePass=this.forceSinglePass,n.allowOverride=this.allowOverride,n.visible=this.visible,n.toneMapped=this.toneMapped,n.name=this.name,this.color&&this.color.isColor&&(n.color=this.color.getHex()),this.roughness!==void 0&&(n.roughness=this.roughness),this.metalness!==void 0&&(n.metalness=this.metalness),this.sheen!==void 0&&(n.sheen=this.sheen),this.sheenColor&&this.sheenColor.isColor&&(n.sheenColor=this.sheenColor.getHex()),this.sheenRoughness!==void 0&&(n.sheenRoughness=this.sheenRoughness),this.emissive&&this.emissive.isColor&&(n.emissive=this.emissive.getHex()),this.emissiveIntensity!==void 0&&(n.emissiveIntensity=this.emissiveIntensity),this.specular&&this.specular.isColor&&(n.specular=this.specular.getHex()),this.specularIntensity!==void 0&&(n.specularIntensity=this.specularIntensity),this.specularColor&&this.specularColor.isColor&&(n.specularColor=this.specularColor.getHex()),this.shininess!==void 0&&(n.shininess=this.shininess),this.clearcoat!==void 0&&(n.clearcoat=this.clearcoat),this.clearcoatRoughness!==void 0&&(n.clearcoatRoughness=this.clearcoatRoughness),this.clearcoatMap&&this.clearcoatMap.isTexture&&(n.clearcoatMap=this.clearcoatMap.toJSON(e).uuid),this.clearcoatRoughnessMap&&this.clearcoatRoughnessMap.isTexture&&(n.clearcoatRoughnessMap=this.clearcoatRoughnessMap.toJSON(e).uuid),this.clearcoatNormalMap&&this.clearcoatNormalMap.isTexture&&(n.clearcoatNormalMap=this.clearcoatNormalMap.toJSON(e).uuid,n.clearcoatNormalScale=this.clearcoatNormalScale.toArray()),this.sheenColorMap&&this.sheenColorMap.isTexture&&(n.sheenColorMap=this.sheenColorMap.toJSON(e).uuid),this.sheenRoughnessMap&&this.sheenRoughnessMap.isTexture&&(n.sheenRoughnessMap=this.sheenRoughnessMap.toJSON(e).uuid),this.dispersion!==void 0&&(n.dispersion=this.dispersion),this.retroreflectivity!==void 0&&(n.retroreflectivity=this.retroreflectivity),this.iridescence!==void 0&&(n.iridescence=this.iridescence),this.iridescenceIOR!==void 0&&(n.iridescenceIOR=this.iridescenceIOR),this.iridescenceThicknessRange!==void 0&&(n.iridescenceThicknessRange=this.iridescenceThicknessRange),this.iridescenceMap&&this.iridescenceMap.isTexture&&(n.iridescenceMap=this.iridescenceMap.toJSON(e).uuid),this.iridescenceThicknessMap&&this.iridescenceThicknessMap.isTexture&&(n.iridescenceThicknessMap=this.iridescenceThicknessMap.toJSON(e).uuid),this.anisotropy!==void 0&&(n.anisotropy=this.anisotropy),this.anisotropyRotation!==void 0&&(n.anisotropyRotation=this.anisotropyRotation),this.anisotropyMap&&this.anisotropyMap.isTexture&&(n.anisotropyMap=this.anisotropyMap.toJSON(e).uuid),this.map&&this.map.isTexture&&(n.map=this.map.toJSON(e).uuid),this.matcap&&this.matcap.isTexture&&(n.matcap=this.matcap.toJSON(e).uuid),this.alphaMap&&this.alphaMap.isTexture&&(n.alphaMap=this.alphaMap.toJSON(e).uuid),this.lightMap&&this.lightMap.isTexture&&(n.lightMap=this.lightMap.toJSON(e).uuid,n.lightMapIntensity=this.lightMapIntensity),this.aoMap&&this.aoMap.isTexture&&(n.aoMap=this.aoMap.toJSON(e).uuid,n.aoMapIntensity=this.aoMapIntensity),this.bumpMap&&this.bumpMap.isTexture&&(n.bumpMap=this.bumpMap.toJSON(e).uuid,n.bumpScale=this.bumpScale),this.normalMap&&this.normalMap.isTexture&&(n.normalMap=this.normalMap.toJSON(e).uuid,n.normalMapType=this.normalMapType,n.normalScale=this.normalScale.toArray()),this.displacementMap&&this.displacementMap.isTexture&&(n.displacementMap=this.displacementMap.toJSON(e).uuid,n.displacementScale=this.displacementScale,n.displacementBias=this.displacementBias),this.roughnessMap&&this.roughnessMap.isTexture&&(n.roughnessMap=this.roughnessMap.toJSON(e).uuid),this.metalnessMap&&this.metalnessMap.isTexture&&(n.metalnessMap=this.metalnessMap.toJSON(e).uuid),this.emissiveMap&&this.emissiveMap.isTexture&&(n.emissiveMap=this.emissiveMap.toJSON(e).uuid),this.specularMap&&this.specularMap.isTexture&&(n.specularMap=this.specularMap.toJSON(e).uuid),this.specularIntensityMap&&this.specularIntensityMap.isTexture&&(n.specularIntensityMap=this.specularIntensityMap.toJSON(e).uuid),this.specularColorMap&&this.specularColorMap.isTexture&&(n.specularColorMap=this.specularColorMap.toJSON(e).uuid),this.envMap&&this.envMap.isTexture&&(n.envMap=this.envMap.toJSON(e).uuid,this.combine!==void 0&&(n.combine=this.combine)),this.envMapRotation!==void 0&&(n.envMapRotation=this.envMapRotation.toArray()),this.envMapIntensity!==void 0&&(n.envMapIntensity=this.envMapIntensity),this.reflectivity!==void 0&&(n.reflectivity=this.reflectivity),this.refractionRatio!==void 0&&(n.refractionRatio=this.refractionRatio),this.gradientMap&&this.gradientMap.isTexture&&(n.gradientMap=this.gradientMap.toJSON(e).uuid),this.transmission!==void 0&&(n.transmission=this.transmission),this.transmissionMap&&this.transmissionMap.isTexture&&(n.transmissionMap=this.transmissionMap.toJSON(e).uuid),this.thickness!==void 0&&(n.thickness=this.thickness),this.thicknessMap&&this.thicknessMap.isTexture&&(n.thicknessMap=this.thicknessMap.toJSON(e).uuid),this.attenuationDistance!==void 0&&(n.attenuationDistance=this.attenuationDistance),this.attenuationColor!==void 0&&(n.attenuationColor=this.attenuationColor.getHex()),this.size!==void 0&&(n.size=this.size),this.sizeAttenuation!==void 0&&(n.sizeAttenuation=this.sizeAttenuation),Array.isArray(this.clippingPlanes)&&this.clippingPlanes.length>0&&(n.clippingPlanes=this.clippingPlanes.map(s=>s.toJSON())),this.rotation!==void 0&&(n.rotation=this.rotation),this.depthPacking!==void 0&&(n.depthPacking=this.depthPacking),this.linewidth!==void 0&&(n.linewidth=this.linewidth),this.linecap!==void 0&&(n.linecap=this.linecap),this.linejoin!==void 0&&(n.linejoin=this.linejoin),this.dashSize!==void 0&&(n.dashSize=this.dashSize),this.gapSize!==void 0&&(n.gapSize=this.gapSize),this.scale!==void 0&&(n.scale=this.scale),this.wireframe!==void 0&&(n.wireframe=this.wireframe),this.wireframeLinewidth!==void 0&&(n.wireframeLinewidth=this.wireframeLinewidth),this.wireframeLinecap!==void 0&&(n.wireframeLinecap=this.wireframeLinecap),this.wireframeLinejoin!==void 0&&(n.wireframeLinejoin=this.wireframeLinejoin),this.flatShading!==void 0&&(n.flatShading=this.flatShading),this.fog!==void 0&&(n.fog=this.fog),Object.keys(this.userData).length>0&&(n.userData=this.userData);function i(s){let o=[];for(let a in s){let l=s[a];delete l.metadata,o.push(l)}return o}if(t){let s=i(e.textures),o=i(e.images);s.length>0&&(n.textures=s),o.length>0&&(n.images=o)}return n}fromJSON(e,t){if(e.uuid!==void 0&&(this.uuid=e.uuid),e.name!==void 0&&(this.name=e.name),e.color!==void 0&&this.color!==void 0&&this.color.setHex(e.color),e.roughness!==void 0&&(this.roughness=e.roughness),e.metalness!==void 0&&(this.metalness=e.metalness),e.sheen!==void 0&&(this.sheen=e.sheen),e.sheenColor!==void 0&&(this.sheenColor=new ce().setHex(e.sheenColor)),e.sheenRoughness!==void 0&&(this.sheenRoughness=e.sheenRoughness),e.emissive!==void 0&&this.emissive!==void 0&&this.emissive.setHex(e.emissive),e.specular!==void 0&&this.specular!==void 0&&this.specular.setHex(e.specular),e.specularIntensity!==void 0&&(this.specularIntensity=e.specularIntensity),e.specularColor!==void 0&&this.specularColor!==void 0&&this.specularColor.setHex(e.specularColor),e.shininess!==void 0&&(this.shininess=e.shininess),e.clearcoat!==void 0&&(this.clearcoat=e.clearcoat),e.clearcoatRoughness!==void 0&&(this.clearcoatRoughness=e.clearcoatRoughness),e.dispersion!==void 0&&(this.dispersion=e.dispersion),e.retroreflectivity!==void 0&&(this.retroreflectivity=e.retroreflectivity),e.iridescence!==void 0&&(this.iridescence=e.iridescence),e.iridescenceIOR!==void 0&&(this.iridescenceIOR=e.iridescenceIOR),e.iridescenceThicknessRange!==void 0&&(this.iridescenceThicknessRange=e.iridescenceThicknessRange),e.transmission!==void 0&&(this.transmission=e.transmission),e.thickness!==void 0&&(this.thickness=e.thickness),e.attenuationDistance!==void 0&&(this.attenuationDistance=e.attenuationDistance),e.attenuationColor!==void 0&&this.attenuationColor!==void 0&&this.attenuationColor.setHex(e.attenuationColor),e.anisotropy!==void 0&&(this.anisotropy=e.anisotropy),e.anisotropyRotation!==void 0&&(this.anisotropyRotation=e.anisotropyRotation),e.fog!==void 0&&(this.fog=e.fog),e.flatShading!==void 0&&(this.flatShading=e.flatShading),e.blending!==void 0&&(this.blending=e.blending),e.combine!==void 0&&(this.combine=e.combine),e.side!==void 0&&(this.side=e.side),e.shadowSide!==void 0&&(this.shadowSide=e.shadowSide),e.opacity!==void 0&&(this.opacity=e.opacity),e.transparent!==void 0&&(this.transparent=e.transparent),e.alphaTest!==void 0&&(this.alphaTest=e.alphaTest),e.alphaHash!==void 0&&(this.alphaHash=e.alphaHash),e.depthFunc!==void 0&&(this.depthFunc=e.depthFunc),e.depthTest!==void 0&&(this.depthTest=e.depthTest),e.depthWrite!==void 0&&(this.depthWrite=e.depthWrite),e.colorWrite!==void 0&&(this.colorWrite=e.colorWrite),e.clippingPlanes!==void 0&&(this.clippingPlanes=e.clippingPlanes.map(n=>new gn().fromJSON(n))),e.clipIntersection!==void 0&&(this.clipIntersection=e.clipIntersection),e.clipShadows!==void 0&&(this.clipShadows=e.clipShadows),e.depthPacking!==void 0&&(this.depthPacking=e.depthPacking),e.blendSrc!==void 0&&(this.blendSrc=e.blendSrc),e.blendDst!==void 0&&(this.blendDst=e.blendDst),e.blendEquation!==void 0&&(this.blendEquation=e.blendEquation),e.blendSrcAlpha!==void 0&&(this.blendSrcAlpha=e.blendSrcAlpha),e.blendDstAlpha!==void 0&&(this.blendDstAlpha=e.blendDstAlpha),e.blendEquationAlpha!==void 0&&(this.blendEquationAlpha=e.blendEquationAlpha),e.blendColor!==void 0&&this.blendColor!==void 0&&this.blendColor.setHex(e.blendColor),e.blendAlpha!==void 0&&(this.blendAlpha=e.blendAlpha),e.stencilWriteMask!==void 0&&(this.stencilWriteMask=e.stencilWriteMask),e.stencilFunc!==void 0&&(this.stencilFunc=e.stencilFunc),e.stencilRef!==void 0&&(this.stencilRef=e.stencilRef),e.stencilFuncMask!==void 0&&(this.stencilFuncMask=e.stencilFuncMask),e.stencilFail!==void 0&&(this.stencilFail=e.stencilFail),e.stencilZFail!==void 0&&(this.stencilZFail=e.stencilZFail),e.stencilZPass!==void 0&&(this.stencilZPass=e.stencilZPass),e.stencilWrite!==void 0&&(this.stencilWrite=e.stencilWrite),e.wireframe!==void 0&&(this.wireframe=e.wireframe),e.wireframeLinewidth!==void 0&&(this.wireframeLinewidth=e.wireframeLinewidth),e.wireframeLinecap!==void 0&&(this.wireframeLinecap=e.wireframeLinecap),e.wireframeLinejoin!==void 0&&(this.wireframeLinejoin=e.wireframeLinejoin),e.rotation!==void 0&&(this.rotation=e.rotation),e.linewidth!==void 0&&(this.linewidth=e.linewidth),e.linecap!==void 0&&(this.linecap=e.linecap),e.linejoin!==void 0&&(this.linejoin=e.linejoin),e.dashSize!==void 0&&(this.dashSize=e.dashSize),e.gapSize!==void 0&&(this.gapSize=e.gapSize),e.scale!==void 0&&(this.scale=e.scale),e.polygonOffset!==void 0&&(this.polygonOffset=e.polygonOffset),e.polygonOffsetFactor!==void 0&&(this.polygonOffsetFactor=e.polygonOffsetFactor),e.polygonOffsetUnits!==void 0&&(this.polygonOffsetUnits=e.polygonOffsetUnits),e.dithering!==void 0&&(this.dithering=e.dithering),e.alphaToCoverage!==void 0&&(this.alphaToCoverage=e.alphaToCoverage),e.premultipliedAlpha!==void 0&&(this.premultipliedAlpha=e.premultipliedAlpha),e.forceSinglePass!==void 0&&(this.forceSinglePass=e.forceSinglePass),e.allowOverride!==void 0&&(this.allowOverride=e.allowOverride),e.visible!==void 0&&(this.visible=e.visible),e.toneMapped!==void 0&&(this.toneMapped=e.toneMapped),e.userData!==void 0&&(this.userData=e.userData),e.vertexColors!==void 0&&(typeof e.vertexColors=="number"?this.vertexColors=e.vertexColors>0:this.vertexColors=e.vertexColors),e.size!==void 0&&(this.size=e.size),e.sizeAttenuation!==void 0&&(this.sizeAttenuation=e.sizeAttenuation),e.map!==void 0&&(this.map=t[e.map]||null),e.matcap!==void 0&&(this.matcap=t[e.matcap]||null),e.alphaMap!==void 0&&(this.alphaMap=t[e.alphaMap]||null),e.bumpMap!==void 0&&(this.bumpMap=t[e.bumpMap]||null),e.bumpScale!==void 0&&(this.bumpScale=e.bumpScale),e.normalMap!==void 0&&(this.normalMap=t[e.normalMap]||null),e.normalMapType!==void 0&&(this.normalMapType=e.normalMapType),e.normalScale!==void 0){let n=e.normalScale;Array.isArray(n)===!1&&(n=[n,n]),this.normalScale=new J().fromArray(n)}return e.displacementMap!==void 0&&(this.displacementMap=t[e.displacementMap]||null),e.displacementScale!==void 0&&(this.displacementScale=e.displacementScale),e.displacementBias!==void 0&&(this.displacementBias=e.displacementBias),e.roughnessMap!==void 0&&(this.roughnessMap=t[e.roughnessMap]||null),e.metalnessMap!==void 0&&(this.metalnessMap=t[e.metalnessMap]||null),e.emissiveMap!==void 0&&(this.emissiveMap=t[e.emissiveMap]||null),e.emissiveIntensity!==void 0&&(this.emissiveIntensity=e.emissiveIntensity),e.specularMap!==void 0&&(this.specularMap=t[e.specularMap]||null),e.specularIntensityMap!==void 0&&(this.specularIntensityMap=t[e.specularIntensityMap]||null),e.specularColorMap!==void 0&&(this.specularColorMap=t[e.specularColorMap]||null),e.envMap!==void 0&&(this.envMap=t[e.envMap]||null),e.envMapRotation!==void 0&&this.envMapRotation.fromArray(e.envMapRotation),e.envMapIntensity!==void 0&&(this.envMapIntensity=e.envMapIntensity),e.reflectivity!==void 0&&(this.reflectivity=e.reflectivity),e.refractionRatio!==void 0&&(this.refractionRatio=e.refractionRatio),e.lightMap!==void 0&&(this.lightMap=t[e.lightMap]||null),e.lightMapIntensity!==void 0&&(this.lightMapIntensity=e.lightMapIntensity),e.aoMap!==void 0&&(this.aoMap=t[e.aoMap]||null),e.aoMapIntensity!==void 0&&(this.aoMapIntensity=e.aoMapIntensity),e.gradientMap!==void 0&&(this.gradientMap=t[e.gradientMap]||null),e.clearcoatMap!==void 0&&(this.clearcoatMap=t[e.clearcoatMap]||null),e.clearcoatRoughnessMap!==void 0&&(this.clearcoatRoughnessMap=t[e.clearcoatRoughnessMap]||null),e.clearcoatNormalMap!==void 0&&(this.clearcoatNormalMap=t[e.clearcoatNormalMap]||null),e.clearcoatNormalScale!==void 0&&(this.clearcoatNormalScale=new J().fromArray(e.clearcoatNormalScale)),e.iridescenceMap!==void 0&&(this.iridescenceMap=t[e.iridescenceMap]||null),e.iridescenceThicknessMap!==void 0&&(this.iridescenceThicknessMap=t[e.iridescenceThicknessMap]||null),e.transmissionMap!==void 0&&(this.transmissionMap=t[e.transmissionMap]||null),e.thicknessMap!==void 0&&(this.thicknessMap=t[e.thicknessMap]||null),e.anisotropyMap!==void 0&&(this.anisotropyMap=t[e.anisotropyMap]||null),e.sheenColorMap!==void 0&&(this.sheenColorMap=t[e.sheenColorMap]||null),e.sheenRoughnessMap!==void 0&&(this.sheenRoughnessMap=t[e.sheenRoughnessMap]||null),this}clone(){return new this.constructor().copy(this)}copy(e){this.name=e.name,this.blending=e.blending,this.side=e.side,this.vertexColors=e.vertexColors,this.opacity=e.opacity,this.transparent=e.transparent,this.blendSrc=e.blendSrc,this.blendDst=e.blendDst,this.blendEquation=e.blendEquation,this.blendSrcAlpha=e.blendSrcAlpha,this.blendDstAlpha=e.blendDstAlpha,this.blendEquationAlpha=e.blendEquationAlpha,this.blendColor.copy(e.blendColor),this.blendAlpha=e.blendAlpha,this.depthFunc=e.depthFunc,this.depthTest=e.depthTest,this.depthWrite=e.depthWrite,this.stencilWriteMask=e.stencilWriteMask,this.stencilFunc=e.stencilFunc,this.stencilRef=e.stencilRef,this.stencilFuncMask=e.stencilFuncMask,this.stencilFail=e.stencilFail,this.stencilZFail=e.stencilZFail,this.stencilZPass=e.stencilZPass,this.stencilWrite=e.stencilWrite;let t=e.clippingPlanes,n=null;if(t!==null){let i=t.length;n=new Array(i);for(let s=0;s!==i;++s)n[s]=t[s].clone()}return this.clippingPlanes=n,this.clipIntersection=e.clipIntersection,this.clipShadows=e.clipShadows,this.shadowSide=e.shadowSide,this.colorWrite=e.colorWrite,this.precision=e.precision,this.polygonOffset=e.polygonOffset,this.polygonOffsetFactor=e.polygonOffsetFactor,this.polygonOffsetUnits=e.polygonOffsetUnits,this.dithering=e.dithering,this.alphaTest=e.alphaTest,this.alphaHash=e.alphaHash,this.alphaToCoverage=e.alphaToCoverage,this.premultipliedAlpha=e.premultipliedAlpha,this.forceSinglePass=e.forceSinglePass,this.allowOverride=e.allowOverride,this.visible=e.visible,this.toneMapped=e.toneMapped,this.userData=JSON.parse(JSON.stringify(e.userData)),this}dispose(){this.dispatchEvent({type:"dispose"})}set needsUpdate(e){e===!0&&this.version++}},Lr=class extends vt{constructor(e){super(),this.isSpriteMaterial=!0,this.type="SpriteMaterial",this.color=new ce(16777215),this.map=null,this.alphaMap=null,this.rotation=0,this.sizeAttenuation=!0,this.transparent=!0,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.map=e.map,this.alphaMap=e.alphaMap,this.rotation=e.rotation,this.sizeAttenuation=e.sizeAttenuation,this.fog=e.fog,this}},fr,Eo=new R,pr=new R,mr=new R,gr=new J,wo=new J,yg=new ze,jl=new R,Ro=new R,$l=new R,Ep=new J,zu=new J,wp=new J,$o=class extends st{constructor(e=new Lr){if(super(),this.isSprite=!0,this.type="Sprite",fr===void 0){fr=new Oe;let t=new Float32Array([-.5,-.5,0,0,0,.5,-.5,0,1,0,.5,.5,0,1,1,-.5,.5,0,0,1]),n=new ci(t,5);fr.setIndex([0,1,2,0,2,3]),fr.setAttribute("position",new Kn(n,3,0,!1)),fr.setAttribute("uv",new Kn(n,2,3,!1))}this.geometry=fr,this.material=e,this.center=new J(.5,.5),this.count=1}intersectsFrustum(e){return e.intersectsSprite(this)}raycast(e,t){e.camera===null&&Pe('Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.'),pr.setFromMatrixScale(this.matrixWorld),yg.copy(e.camera.matrixWorld),this.modelViewMatrix.multiplyMatrices(e.camera.matrixWorldInverse,this.matrixWorld),mr.setFromMatrixPosition(this.modelViewMatrix),e.camera.isPerspectiveCamera&&this.material.sizeAttenuation===!1&&pr.multiplyScalar(-mr.z);let n=this.material.rotation,i,s;n!==0&&(s=Math.cos(n),i=Math.sin(n));let o=this.center;Ql(jl.set(-.5,-.5,0),mr,o,pr,i,s),Ql(Ro.set(.5,-.5,0),mr,o,pr,i,s),Ql($l.set(.5,.5,0),mr,o,pr,i,s),Ep.set(0,0),zu.set(1,0),wp.set(1,1);let a=e.ray.intersectTriangle(jl,Ro,$l,!1,Eo);if(a===null&&(Ql(Ro.set(-.5,.5,0),mr,o,pr,i,s),zu.set(0,1),a=e.ray.intersectTriangle(jl,$l,Ro,!1,Eo),a===null))return;let l=e.ray.origin.distanceTo(Eo);l<e.near||l>e.far||t.push({distance:l,point:Eo.clone(),uv:qn.getInterpolation(Eo,jl,Ro,$l,Ep,zu,wp,new J),face:null,object:this})}copy(e,t){return super.copy(e,t),e.center!==void 0&&this.center.copy(e.center),this.material=e.material,this}};function Ql(r,e,t,n,i,s){gr.subVectors(r,t).addScalar(.5).multiply(n),i!==void 0?(wo.x=s*gr.x-i*gr.y,wo.y=i*gr.x+s*gr.y):wo.copy(gr),r.copy(e),r.x+=wo.x,r.y+=wo.y,r.applyMatrix4(yg)}var ec=new R,Rp=new R,Qo=class extends st{constructor(){super(),this.isLOD=!0,this._currentLevel=0,this.type="LOD",Object.defineProperties(this,{levels:{enumerable:!0,value:[]}}),this.autoUpdate=!0}copy(e){super.copy(e,!1);let t=e.levels;for(let n=0,i=t.length;n<i;n++){let s=t[n];this.addLevel(s.object.clone(),s.distance,s.hysteresis)}return this.autoUpdate=e.autoUpdate,this}addLevel(e,t=0,n=0){t=Math.abs(t);let i=this.levels,s;for(s=0;s<i.length&&!(t<i[s].distance);s++);return i.splice(s,0,{distance:t,hysteresis:n,object:e}),this.add(e),this}removeLevel(e){let t=this.levels;for(let n=0;n<t.length;n++)if(t[n].distance===e){let i=t.splice(n,1);return this.remove(i[0].object),!0}return!1}getCurrentLevel(){return this._currentLevel}getObjectForDistance(e){let t=this.levels;if(t.length>0){let n,i;for(n=1,i=t.length;n<i;n++){let s=t[n].distance;if(t[n].object.visible&&(s-=s*t[n].hysteresis),e<s)break}return t[n-1].object}return null}raycast(e,t){if(this.levels.length>0){ec.setFromMatrixPosition(this.matrixWorld);let i=e.ray.origin.distanceTo(ec);this.getObjectForDistance(i).raycast(e,t)}}update(e){let t=this.levels;if(t.length>1){ec.setFromMatrixPosition(e.matrixWorld),Rp.setFromMatrixPosition(this.matrixWorld);let n=ec.distanceTo(Rp)/e.zoom;t[0].object.visible=!0;let i,s;for(i=1,s=t.length;i<s;i++){let o=t[i].distance;if(t[i].object.visible&&(o-=o*t[i].hysteresis),n>=o)t[i-1].object.visible=!1,t[i].object.visible=!0;else break}for(this._currentLevel=i-1;i<s;i++)t[i].object.visible=!1}}toJSON(e){let t=super.toJSON(e);t.object.autoUpdate=this.autoUpdate,t.object.levels=[];let n=this.levels;for(let i=0,s=n.length;i<s;i++){let o=n[i];t.object.levels.push({object:o.object.uuid,distance:o.distance,hysteresis:o.hysteresis})}return t}},Ei=new R,ku=new R,tc=new R,nc=new R,Jn=class{constructor(e=new R,t=new R(0,0,-1)){this.origin=e,this.direction=t}set(e,t){return this.origin.copy(e),this.direction.copy(t),this}copy(e){return this.origin.copy(e.origin),this.direction.copy(e.direction),this}at(e,t){return t.copy(this.origin).addScaledVector(this.direction,e)}lookAt(e){return this.direction.copy(e).sub(this.origin).normalize(),this}recast(e){return this.origin.copy(this.at(e,Ei)),this}closestPointToPoint(e,t){t.subVectors(e,this.origin);let n=t.dot(this.direction);return n<0?t.copy(this.origin):t.copy(this.origin).addScaledVector(this.direction,n)}distanceToPoint(e){return Math.sqrt(this.distanceSqToPoint(e))}distanceSqToPoint(e){let t=Ei.subVectors(e,this.origin).dot(this.direction);return t<0?this.origin.distanceToSquared(e):(Ei.copy(this.origin).addScaledVector(this.direction,t),Ei.distanceToSquared(e))}distanceSqToSegment(e,t,n,i){ku.copy(e).add(t).multiplyScalar(.5),tc.copy(t).sub(e).normalize(),nc.copy(this.origin).sub(ku);let s=e.distanceTo(t)*.5,o=-this.direction.dot(tc),a=nc.dot(this.direction),l=-nc.dot(tc),c=nc.lengthSq(),h=Math.abs(1-o*o),u,d,f,p;if(h>0)if(u=o*l-a,d=o*a-l,p=s*h,u>=0)if(d>=-p)if(d<=p){let _=1/h;u*=_,d*=_,f=u*(u+o*d+2*a)+d*(o*u+d+2*l)+c}else d=s,u=Math.max(0,-(o*d+a)),f=-u*u+d*(d+2*l)+c;else d=-s,u=Math.max(0,-(o*d+a)),f=-u*u+d*(d+2*l)+c;else d<=-p?(u=Math.max(0,-(-o*s+a)),d=u>0?-s:Math.min(Math.max(-s,-l),s),f=-u*u+d*(d+2*l)+c):d<=p?(u=0,d=Math.min(Math.max(-s,-l),s),f=d*(d+2*l)+c):(u=Math.max(0,-(o*s+a)),d=u>0?s:Math.min(Math.max(-s,-l),s),f=-u*u+d*(d+2*l)+c);else d=o>0?-s:s,u=Math.max(0,-(o*d+a)),f=-u*u+d*(d+2*l)+c;return n&&n.copy(this.origin).addScaledVector(this.direction,u),i&&i.copy(ku).addScaledVector(tc,d),f}intersectSphere(e,t){if(e.radius<0)return null;Ei.subVectors(e.center,this.origin);let n=Ei.dot(this.direction),i=Ei.dot(Ei)-n*n,s=e.radius*e.radius;if(i>s)return null;let o=Math.sqrt(s-i),a=n-o,l=n+o;return l<0?null:a<0?this.at(l,t):this.at(a,t)}intersectsSphere(e){return e.radius<0?!1:this.distanceSqToPoint(e.center)<=e.radius*e.radius}distanceToPlane(e){let t=e.normal.dot(this.direction);if(t===0)return e.distanceToPoint(this.origin)===0?0:null;let n=-(this.origin.dot(e.normal)+e.constant)/t;return n>=0?n:null}intersectPlane(e,t){let n=this.distanceToPlane(e);return n===null?null:this.at(n,t)}intersectsPlane(e){let t=e.distanceToPoint(this.origin);return t===0||e.normal.dot(this.direction)*t<0}intersectBox(e,t){let n,i,s,o,a,l,c=1/this.direction.x,h=1/this.direction.y,u=1/this.direction.z,d=this.origin;return c>=0?(n=(e.min.x-d.x)*c,i=(e.max.x-d.x)*c):(n=(e.max.x-d.x)*c,i=(e.min.x-d.x)*c),h>=0?(s=(e.min.y-d.y)*h,o=(e.max.y-d.y)*h):(s=(e.max.y-d.y)*h,o=(e.min.y-d.y)*h),n>o||s>i||((s>n||isNaN(n))&&(n=s),(o<i||isNaN(i))&&(i=o),u>=0?(a=(e.min.z-d.z)*u,l=(e.max.z-d.z)*u):(a=(e.max.z-d.z)*u,l=(e.min.z-d.z)*u),n>l||a>i)||((a>n||n!==n)&&(n=a),(l<i||i!==i)&&(i=l),i<0)?null:this.at(n>=0?n:i,t)}intersectsBox(e){return this.intersectBox(e,Ei)!==null}intersectTriangle(e,t,n,i,s){let o=this.origin,a=this.direction,l=a.x,c=a.y,h=a.z,u=e.x-o.x,d=e.y-o.y,f=e.z-o.z,p=t.x-o.x,_=t.y-o.y,g=t.z-o.z,m=n.x-o.x,y=n.y-o.y,b=n.z-o.z,x=Math.abs(l),T=Math.abs(c),S=Math.abs(h),w,v,E,I,P,F,z,N,B,H,X,ie;if(x>=T&&x>=S?(E=l,F=u,B=p,ie=m,l>=0?(w=c,v=h,I=d,P=f,z=_,N=g,H=y,X=b):(w=h,v=c,I=f,P=d,z=g,N=_,H=b,X=y)):T>=S?(E=c,F=d,B=_,ie=y,c>=0?(w=h,v=l,I=f,P=u,z=g,N=p,H=b,X=m):(w=l,v=h,I=u,P=f,z=p,N=g,H=m,X=b)):(E=h,F=f,B=g,ie=b,h>=0?(w=l,v=c,I=u,P=d,z=p,N=_,H=m,X=y):(w=c,v=l,I=d,P=u,z=_,N=p,H=y,X=m)),E===0)return null;let q=w/E,Q=v/E,ne=1/E,Ne=I-q*F,we=P-Q*F,ct=z-q*B,tt=N-Q*B,ot=H-q*ie,K=X-Q*ie,ee=ot*tt-K*ct,ve=Ne*K-we*ot,Ge=ct*we-tt*Ne;if(i){if(ee<0||ve<0||Ge<0)return null}else if((ee<0||ve<0||Ge<0)&&(ee>0||ve>0||Ge>0))return null;let Te=ee+ve+Ge;if(Te===0)return null;let We=ne*(ee*F+ve*B+Ge*ie);return(Te>0?We<0:We>0)?null:this.at(We/Te,s)}applyMatrix4(e){return this.origin.applyMatrix4(e),this.direction.transformDirection(e),this}equals(e){return e.origin.equals(this.origin)&&e.direction.equals(this.direction)}clone(){return new this.constructor().copy(this)}},Kt=class extends vt{constructor(e){super(),this.isMeshBasicMaterial=!0,this.type="MeshBasicMaterial",this.color=new ce(16777215),this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.specularMap=null,this.alphaMap=null,this.envMap=null,this.envMapRotation=new Dn,this.combine=no,this.reflectivity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.map=e.map,this.lightMap=e.lightMap,this.lightMapIntensity=e.lightMapIntensity,this.aoMap=e.aoMap,this.aoMapIntensity=e.aoMapIntensity,this.specularMap=e.specularMap,this.alphaMap=e.alphaMap,this.envMap=e.envMap,this.envMapRotation.copy(e.envMapRotation),this.combine=e.combine,this.reflectivity=e.reflectivity,this.refractionRatio=e.refractionRatio,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.wireframeLinecap=e.wireframeLinecap,this.wireframeLinejoin=e.wireframeLinejoin,this.fog=e.fog,this}},Cp=new ze,ps=new Jn,ic=new Nt,Ip=new R,sc=new R,rc=new R,oc=new R,Vu=new R,ac=new R,Pp=new R,lc=new R,rt=class extends st{constructor(e=new Oe,t=new Kt){super(),this.isMesh=!0,this.type="Mesh",this.geometry=e,this.material=t,this.morphTargetDictionary=void 0,this.morphTargetInfluences=void 0,this.count=1,this.updateMorphTargets()}copy(e,t){return super.copy(e,t),e.morphTargetInfluences!==void 0&&(this.morphTargetInfluences=e.morphTargetInfluences.slice()),e.morphTargetDictionary!==void 0&&(this.morphTargetDictionary=Object.assign({},e.morphTargetDictionary)),this.material=Array.isArray(e.material)?e.material.slice():e.material,this.geometry=e.geometry,this}updateMorphTargets(){let t=this.geometry.morphAttributes,n=Object.keys(t);if(n.length>0){let i=t[n[0]];if(i!==void 0){this.morphTargetInfluences=[],this.morphTargetDictionary={};for(let s=0,o=i.length;s<o;s++){let a=i[s].name||String(s);this.morphTargetInfluences.push(0),this.morphTargetDictionary[a]=s}}}}getVertexPosition(e,t){let n=this.geometry,i=n.attributes.position,s=n.morphAttributes.position,o=n.morphTargetsRelative;t.fromBufferAttribute(i,e);let a=this.morphTargetInfluences;if(s&&a){ac.set(0,0,0);for(let l=0,c=s.length;l<c;l++){let h=a[l],u=s[l];h!==0&&(Vu.fromBufferAttribute(u,e),o?ac.addScaledVector(Vu,h):ac.addScaledVector(Vu.sub(t),h))}t.add(ac)}return t}intersectsFrustum(e){return e.intersectsObject(this)}raycast(e,t){let n=this.geometry,i=this.material,s=this.matrixWorld;i!==void 0&&(n.boundingSphere===null&&n.computeBoundingSphere(),ic.copy(n.boundingSphere),ic.applyMatrix4(s),ps.copy(e.ray).recast(e.near),!(ic.containsPoint(ps.origin)===!1&&(ps.intersectSphere(ic,Ip)===null||ps.origin.distanceToSquared(Ip)>(e.far-e.near)**2))&&(Cp.copy(s).invert(),ps.copy(e.ray).applyMatrix4(Cp),!(n.boundingBox!==null&&ps.intersectsBox(n.boundingBox)===!1)&&this._computeIntersections(e,t,ps)))}_computeIntersections(e,t,n){let i,s=this.geometry,o=this.material,a=s.index,l=s.attributes.position,c=s.attributes.uv,h=s.attributes.uv1,u=s.attributes.normal,d=s.groups,f=s.drawRange;if(a!==null)if(Array.isArray(o))for(let p=0,_=d.length;p<_;p++){let g=d[p],m=o[g.materialIndex],y=Math.max(g.start,f.start),b=Math.min(a.count,Math.min(g.start+g.count,f.start+f.count));for(let x=y,T=b;x<T;x+=3){let S=a.getX(x),w=a.getX(x+1),v=a.getX(x+2);i=cc(this,m,e,n,c,h,u,S,w,v),i&&(i.faceIndex=Math.floor(x/3),i.face.materialIndex=g.materialIndex,t.push(i))}}else{let p=Math.max(0,f.start),_=Math.min(a.count,f.start+f.count);for(let g=p,m=_;g<m;g+=3){let y=a.getX(g),b=a.getX(g+1),x=a.getX(g+2);i=cc(this,o,e,n,c,h,u,y,b,x),i&&(i.faceIndex=Math.floor(g/3),t.push(i))}}else if(l!==void 0)if(Array.isArray(o))for(let p=0,_=d.length;p<_;p++){let g=d[p],m=o[g.materialIndex],y=Math.max(g.start,f.start),b=Math.min(l.count,Math.min(g.start+g.count,f.start+f.count));for(let x=y,T=b;x<T;x+=3){let S=x,w=x+1,v=x+2;i=cc(this,m,e,n,c,h,u,S,w,v),i&&(i.faceIndex=Math.floor(x/3),i.face.materialIndex=g.materialIndex,t.push(i))}}else{let p=Math.max(0,f.start),_=Math.min(l.count,f.start+f.count);for(let g=p,m=_;g<m;g+=3){let y=g,b=g+1,x=g+2;i=cc(this,o,e,n,c,h,u,y,b,x),i&&(i.faceIndex=Math.floor(g/3),t.push(i))}}}};function a0(r,e,t,n,i,s,o,a){let l;if(e.side===qt?l=n.intersectTriangle(o,s,i,!0,a):l=n.intersectTriangle(i,s,o,e.side===ei,a),l===null)return null;lc.copy(a),lc.applyMatrix4(r.matrixWorld);let c=t.ray.origin.distanceTo(lc);return c<t.near||c>t.far?null:{distance:c,point:lc.clone(),object:r}}function cc(r,e,t,n,i,s,o,a,l,c){r.getVertexPosition(a,sc),r.getVertexPosition(l,rc),r.getVertexPosition(c,oc);let h=a0(r,e,t,n,sc,rc,oc,Pp);if(h){let u=new R;qn.getBarycoord(Pp,sc,rc,oc,u),i&&(h.uv=qn.getInterpolatedAttribute(i,a,l,c,u,new J)),s&&(h.uv1=qn.getInterpolatedAttribute(s,a,l,c,u,new J)),o&&(h.normal=qn.getInterpolatedAttribute(o,a,l,c,u,new R),h.normal.dot(n.direction)>0&&h.normal.multiplyScalar(-1));let d={a,b:l,c,normal:new R,materialIndex:0};qn.getNormal(sc,rc,oc,d.normal),h.face=d,h.barycoord=u}return h}var Co=new mt,Lp=new mt,Np=new mt,l0=new mt,Dp=new ze,hc=new R,Gu=new Nt,Up=new ze,Hu=new Jn,Ls=class extends rt{constructor(e,t){super(e,t),this.isSkinnedMesh=!0,this.type="SkinnedMesh",this.bindMode=Nc,this.bindMatrix=new ze,this.bindMatrixInverse=new ze,this.boundingBox=null,this.boundingSphere=null}computeBoundingBox(){let e=this.geometry;this.boundingBox===null&&(this.boundingBox=new Ft),this.boundingBox.makeEmpty();let t=e.getAttribute("position");for(let n=0;n<t.count;n++)this.getVertexPosition(n,hc),this.boundingBox.expandByPoint(hc)}computeBoundingSphere(){let e=this.geometry;this.boundingSphere===null&&(this.boundingSphere=new Nt),this.boundingSphere.makeEmpty();let t=e.getAttribute("position");for(let n=0;n<t.count;n++)this.getVertexPosition(n,hc),this.boundingSphere.expandByPoint(hc)}copy(e,t){return super.copy(e,t),this.bindMode=e.bindMode,this.bindMatrix.copy(e.bindMatrix),this.bindMatrixInverse.copy(e.bindMatrixInverse),this.skeleton=e.skeleton,e.boundingBox!==null&&(this.boundingBox=e.boundingBox.clone()),e.boundingSphere!==null&&(this.boundingSphere=e.boundingSphere.clone()),this}raycast(e,t){let n=this.material,i=this.matrixWorld;n!==void 0&&(this.boundingSphere===null&&this.computeBoundingSphere(),Gu.copy(this.boundingSphere),Gu.applyMatrix4(i),e.ray.intersectsSphere(Gu)!==!1&&(Up.copy(i).invert(),Hu.copy(e.ray).applyMatrix4(Up),!(this.boundingBox!==null&&Hu.intersectsBox(this.boundingBox)===!1)&&this._computeIntersections(e,t,Hu)))}getVertexPosition(e,t){return super.getVertexPosition(e,t),this.applyBoneTransform(e,t),t}bind(e,t){this.skeleton=e,t===void 0&&(this.updateMatrixWorld(!0),this.skeleton.calculateInverses(),t=this.matrixWorld),this.bindMatrix.copy(t),this.bindMatrixInverse.copy(t).invert()}pose(){this.skeleton.pose()}normalizeSkinWeights(){let e=new mt,t=this.geometry.attributes.skinWeight;for(let n=0,i=t.count;n<i;n++){e.fromBufferAttribute(t,n);let s=1/e.manhattanLength();s!==1/0?e.multiplyScalar(s):e.set(1,0,0,0),t.setXYZW(n,e.x,e.y,e.z,e.w)}}updateMatrixWorld(e){super.updateMatrixWorld(e),this.bindMode===Nc?this.bindMatrixInverse.copy(this.matrixWorld).invert():this.bindMode===kd?this.bindMatrixInverse.copy(this.bindMatrix).invert():de("SkinnedMesh: Unrecognized bindMode: "+this.bindMode)}applyBoneTransform(e,t){let n=this.skeleton,i=this.geometry;Lp.fromBufferAttribute(i.attributes.skinIndex,e),Np.fromBufferAttribute(i.attributes.skinWeight,e),t.isVector4?(Co.copy(t),t.set(0,0,0,0)):(Co.set(...t,1),t.set(0,0,0)),Co.applyMatrix4(this.bindMatrix);for(let s=0;s<4;s++){let o=Np.getComponent(s);if(o!==0){let a=Lp.getComponent(s);Dp.multiplyMatrices(n.bones[a].matrixWorld,n.boneInverses[a]),t.addScaledVector(l0.copy(Co).applyMatrix4(Dp),o)}}return t.isVector4&&(t.w=Co.w),t.applyMatrix4(this.bindMatrixInverse)}},is=class extends st{constructor(){super(),this.isBone=!0,this.type="Bone"}},hn=class extends Et{constructor(e=null,t=1,n=1,i,s,o,a,l,c=At,h=At,u,d){super(null,o,a,l,c,h,i,s,u,d),this.isDataTexture=!0,this.image={data:e,width:t,height:n},this.generateMipmaps=!1,this.flipY=!1,this.unpackAlignment=1}},Fp=new ze,c0=new ze,Ns=class r{constructor(e=[],t=[]){this.uuid=Tn(),this.bones=e.slice(0),this.boneInverses=t,this.boneMatrices=null,this.boneTexture=null,this.init()}init(){let e=this.bones,t=this.boneInverses;if(this.boneMatrices=new Float32Array(e.length*16),t.length===0)this.calculateInverses();else if(e.length!==t.length){de("Skeleton: Number of inverse bone matrices does not match amount of bones."),this.boneInverses=[];for(let n=0,i=this.bones.length;n<i;n++)this.boneInverses.push(new ze)}}calculateInverses(){this.boneInverses.length=0;for(let e=0,t=this.bones.length;e<t;e++){let n=new ze;this.bones[e]&&n.copy(this.bones[e].matrixWorld).invert(),this.boneInverses.push(n)}}pose(){for(let e=0,t=this.bones.length;e<t;e++){let n=this.bones[e];n&&n.matrixWorld.copy(this.boneInverses[e]).invert()}for(let e=0,t=this.bones.length;e<t;e++){let n=this.bones[e];n&&(n.parent&&n.parent.isBone?(n.matrix.copy(n.parent.matrixWorld).invert(),n.matrix.multiply(n.matrixWorld)):n.matrix.copy(n.matrixWorld),n.matrix.decompose(n.position,n.quaternion,n.scale))}}update(){let e=this.bones,t=this.boneInverses,n=this.boneMatrices,i=this.boneTexture;for(let s=0,o=e.length;s<o;s++){let a=e[s]?e[s].matrixWorld:c0;Fp.multiplyMatrices(a,t[s]),Fp.toArray(n,s*16)}i!==null&&(i.needsUpdate=!0)}clone(){return new r(this.bones,this.boneInverses)}computeBoneTexture(){let e=Math.sqrt(this.bones.length*4);e=Math.ceil(e/4)*4,e=Math.max(e,4);let t=new Float32Array(e*e*4);t.set(this.boneMatrices);let n=new hn(t,e,e,tn,en);return n.needsUpdate=!0,this.boneMatrices=t,this.boneTexture=n,this}getBoneByName(e){for(let t=0,n=this.bones.length;t<n;t++){let i=this.bones[t];if(i.name===e)return i}}dispose(){this.boneTexture!==null&&(this.boneTexture.dispose(),this.boneTexture=null)}fromJSON(e,t){this.uuid=e.uuid;for(let n=0,i=e.bones.length;n<i;n++){let s=e.bones[n],o=t[s];o===void 0&&(de("Skeleton: No bone found with UUID:",s),o=new is),this.bones.push(o),this.boneInverses.push(new ze().fromArray(e.boneInverses[n]))}return this.init(),this}toJSON(){let e={metadata:{version:4.7,type:"Skeleton",generator:"Skeleton.toJSON"},bones:[],boneInverses:[]};e.uuid=this.uuid;let t=this.bones,n=this.boneInverses;for(let i=0,s=t.length;i<s;i++){let o=t[i];e.bones.push(o.uuid);let a=n[i];e.boneInverses.push(a.toArray())}return e}},An=class extends Qe{constructor(e,t,n,i=1){super(e,t,n),this.isInstancedBufferAttribute=!0,this.meshPerAttribute=i}copy(e){return super.copy(e),this.meshPerAttribute=e.meshPerAttribute,this}toJSON(){let e=super.toJSON();return e.meshPerAttribute=this.meshPerAttribute,e.isInstancedBufferAttribute=!0,e}},_r=new ze,Op=new ze,uc=[],Bp=new Ft,h0=new ze,Io=new rt,Po=new Nt,Ii=class extends rt{constructor(e,t,n){super(e,t),this.isInstancedMesh=!0,this.instanceMatrix=new An(new Float32Array(n*16),16),this.instanceColor=null,this.morphTexture=null,this.count=n,this.boundingBox=null,this.boundingSphere=null;for(let i=0;i<n;i++)this.setMatrixAt(i,h0)}computeBoundingBox(){let e=this.geometry,t=this.count;this.boundingBox===null&&(this.boundingBox=new Ft),e.boundingBox===null&&e.computeBoundingBox(),this.boundingBox.makeEmpty();for(let n=0;n<t;n++)this.getMatrixAt(n,_r),Bp.copy(e.boundingBox).applyMatrix4(_r),this.boundingBox.union(Bp)}computeBoundingSphere(){let e=this.geometry,t=this.count;this.boundingSphere===null&&(this.boundingSphere=new Nt),e.boundingSphere===null&&e.computeBoundingSphere(),this.boundingSphere.makeEmpty();for(let n=0;n<t;n++)this.getMatrixAt(n,_r),Po.copy(e.boundingSphere).applyMatrix4(_r),this.boundingSphere.union(Po)}copy(e,t){return super.copy(e,t),this.instanceMatrix.copy(e.instanceMatrix),e.morphTexture!==null&&(this.morphTexture=e.morphTexture.clone()),e.instanceColor!==null&&(this.instanceColor=e.instanceColor.clone()),this.count=e.count,e.boundingBox!==null&&(this.boundingBox=e.boundingBox.clone()),e.boundingSphere!==null&&(this.boundingSphere=e.boundingSphere.clone()),this}getColorAt(e,t){return this.instanceColor===null?t.setRGB(1,1,1):t.fromArray(this.instanceColor.array,e*3)}getMatrixAt(e,t){return t.fromArray(this.instanceMatrix.array,e*16)}getMorphAt(e,t){let n=t.morphTargetInfluences,i=this.morphTexture.source.data.data,s=n.length+1,o=e*s+1;for(let a=0;a<n.length;a++)n[a]=i[o+a]}raycast(e,t){let n=this.matrixWorld,i=this.count;if(Io.geometry=this.geometry,Io.material=this.material,Io.material!==void 0&&(this.boundingSphere===null&&this.computeBoundingSphere(),Po.copy(this.boundingSphere),Po.applyMatrix4(n),e.ray.intersectsSphere(Po)!==!1))for(let s=0;s<i;s++){this.getMatrixAt(s,_r),Op.multiplyMatrices(n,_r),Io.matrixWorld=Op,Io.raycast(e,uc);for(let o=0,a=uc.length;o<a;o++){let l=uc[o];l.instanceId=s,l.object=this,t.push(l)}uc.length=0}}setColorAt(e,t){return this.instanceColor===null&&(this.instanceColor=new An(new Float32Array(this.instanceMatrix.count*3).fill(1),3)),t.toArray(this.instanceColor.array,e*3),this}setMatrixAt(e,t){return t.toArray(this.instanceMatrix.array,e*16),this}setMorphAt(e,t){let n=t.morphTargetInfluences,i=n.length+1;this.morphTexture===null&&(this.morphTexture=new hn(new Float32Array(i*this.count),i,this.count,Qa,en));let s=this.morphTexture.source.data.data,o=0;for(let c=0;c<n.length;c++)o+=n[c];let a=this.geometry.morphTargetsRelative?1:1-o,l=i*e;return s[l]=a,s.set(n,l+1),this}updateMorphTargets(){}dispose(){super.dispose(),this.morphTexture!==null&&(this.morphTexture.dispose(),this.morphTexture=null)}},ms=new Nt,u0=new J(.5,.5),dc=new R,hi=class{constructor(e=new gn,t=new gn,n=new gn,i=new gn,s=new gn,o=new gn){this.planes=[e,t,n,i,s,o]}set(e,t,n,i,s,o){let a=this.planes;return a[0].copy(e),a[1].copy(t),a[2].copy(n),a[3].copy(i),a[4].copy(s),a[5].copy(o),this}copy(e){let t=this.planes;for(let n=0;n<6;n++)t[n].copy(e.planes[n]);return this}setFromProjectionMatrix(e,t=_n,n=!1){let i=this.planes,s=e.elements,o=s[0],a=s[1],l=s[2],c=s[3],h=s[4],u=s[5],d=s[6],f=s[7],p=s[8],_=s[9],g=s[10],m=s[11],y=s[12],b=s[13],x=s[14],T=s[15];if(i[0].setComponents(c-o,f-h,m-p,T-y).normalize(),i[1].setComponents(c+o,f+h,m+p,T+y).normalize(),i[2].setComponents(c+a,f+u,m+_,T+b).normalize(),i[3].setComponents(c-a,f-u,m-_,T-b).normalize(),n)i[4].setComponents(l,d,g,x).normalize(),i[5].setComponents(c-l,f-d,m-g,T-x).normalize();else if(i[4].setComponents(c-l,f-d,m-g,T-x).normalize(),t===_n)i[5].setComponents(c+l,f+d,m+g,T+x).normalize();else if(t===ts)i[5].setComponents(l,d,g,x).normalize();else throw new Error("THREE.Frustum.setFromProjectionMatrix(): Invalid coordinate system: "+t);return this}intersectsObject(e){if(e.boundingSphere!==void 0)e.boundingSphere===null&&e.computeBoundingSphere(),ms.copy(e.boundingSphere).applyMatrix4(e.matrixWorld);else{let t=e.geometry;t.boundingSphere===null&&t.computeBoundingSphere(),ms.copy(t.boundingSphere).applyMatrix4(e.matrixWorld)}return this.intersectsSphere(ms)}intersectsSprite(e){ms.center.set(0,0,0);let t=u0.distanceTo(e.center);return ms.radius=.7071067811865476+t,ms.applyMatrix4(e.matrixWorld),this.intersectsSphere(ms)}intersectsSphere(e){let t=this.planes,n=e.center,i=-e.radius;for(let s=0;s<6;s++)if(t[s].distanceToPoint(n)<i)return!1;return!0}intersectsBox(e){let t=this.planes;for(let n=0;n<6;n++){let i=t[n];if(dc.x=i.normal.x>0?e.max.x:e.min.x,dc.y=i.normal.y>0?e.max.y:e.min.y,dc.z=i.normal.z>0?e.max.z:e.min.z,i.distanceToPoint(dc)<0)return!1}return!0}containsPoint(e){let t=this.planes;for(let n=0;n<6;n++)if(t[n].distanceToPoint(e)<0)return!1;return!0}clone(){return new this.constructor().copy(this)}},zp=new ze,ea=class r{constructor(){this.coordinateSystem=_n,this._frustums=[],this._count=0}setFromArrayCamera(e){let t=e.cameras,n=this._frustums;for(let i=0;i<t.length;i++){let s=t[i];zp.multiplyMatrices(s.projectionMatrix,s.matrixWorldInverse),n[i]===void 0&&(n[i]=new hi),n[i].setFromProjectionMatrix(zp,s.coordinateSystem,s.reversedDepth)}return this._count=t.length,this}intersectsObject(e){let t=this._frustums;for(let n=0;n<this._count;n++)if(t[n].intersectsObject(e))return!0;return!1}intersectsSprite(e){let t=this._frustums;for(let n=0;n<this._count;n++)if(t[n].intersectsSprite(e))return!0;return!1}intersectsSphere(e){let t=this._frustums;for(let n=0;n<this._count;n++)if(t[n].intersectsSphere(e))return!0;return!1}intersectsBox(e){let t=this._frustums;for(let n=0;n<this._count;n++)if(t[n].intersectsBox(e))return!0;return!1}containsPoint(e){let t=this._frustums;for(let n=0;n<this._count;n++)if(t[n].containsPoint(e))return!0;return!1}copy(e){this.coordinateSystem=e.coordinateSystem;let t=this._frustums,n=e._frustums;for(let i=0;i<e._count;i++)t[i]===void 0&&(t[i]=new hi),t[i].copy(n[i]);return this._count=e._count,this}clone(){return new r().copy(this)}};function Wu(r,e){return r-e}function d0(r,e){return r.z-e.z}function f0(r,e){return e.z-r.z}var sd=class{constructor(){this.index=0,this.pool=[],this.list=[]}push(e,t,n,i){let s=this.pool,o=this.list;this.index>=s.length&&s.push({start:-1,count:-1,z:-1,index:-1});let a=s[this.index];o.push(a),this.index++,a.start=e,a.count=t,a.z=n,a.index=i}reset(){this.list.length=0,this.index=0}},pn=new ze,p0=new ce(1,1,1),m0=new hi,g0=new ea,fc=new Ft,gs=new Nt,Lo=new R,kp=new R,_0=new R,Xu=new sd,Qt=new rt,pc=[];function x0(r,e,t=0){let n=e.itemSize;if(r.isInterleavedBufferAttribute||r.array.constructor!==e.array.constructor){let i=r.count;for(let s=0;s<i;s++)for(let o=0;o<n;o++)e.setComponent(s+t,o,r.getComponent(s,o))}else e.array.set(r.array,t*n);e.needsUpdate=!0}function _s(r,e){if(r.constructor!==e.constructor){let t=Math.min(r.length,e.length);for(let n=0;n<t;n++)e[n]=r[n]}else{let t=Math.min(r.length,e.length);e.set(new r.constructor(r.buffer,0,t))}}var ta=class extends rt{constructor(e,t,n=t*2,i){super(new Oe,i),this.isBatchedMesh=!0,this.perObjectFrustumCulled=!0,this.sortObjects=!0,this.boundingBox=null,this.boundingSphere=null,this.customSort=null,this._instanceInfo=[],this._geometryInfo=[],this._availableInstanceIds=[],this._availableGeometryIds=[],this._nextIndexStart=0,this._nextVertexStart=0,this._geometryCount=0,this._visibilityChanged=!0,this._geometryInitialized=!1,this._maxInstanceCount=e,this._maxVertexCount=t,this._maxIndexCount=n,this._multiDrawCounts=new Int32Array(e),this._multiDrawStarts=new Int32Array(e),this._multiDrawCount=0,this._multiDrawBytesPerElement=1,this._matricesTexture=null,this._indirectTexture=null,this._colorsTexture=null,this._initMatricesTexture(),this._initIndirectTexture()}get maxInstanceCount(){return this._maxInstanceCount}get instanceCount(){return this._instanceInfo.length-this._availableInstanceIds.length}get unusedVertexCount(){return this._maxVertexCount-this._nextVertexStart}get unusedIndexCount(){return this._maxIndexCount-this._nextIndexStart}_initMatricesTexture(){let e=Math.sqrt(this._maxInstanceCount*4);e=Math.ceil(e/4)*4,e=Math.max(e,4);let t=new Float32Array(e*e*4),n=new hn(t,e,e,tn,en);this._matricesTexture=n}_initIndirectTexture(){let e=Math.sqrt(this._maxInstanceCount);e=Math.ceil(e);let t=new Uint32Array(e*e),n=new hn(t,e,e,oo,Cn);this._indirectTexture=n}_initColorsTexture(){let e=Math.sqrt(this._maxInstanceCount);e=Math.ceil(e);let t=new Float32Array(e*e*4).fill(1),n=new hn(t,e,e,tn,en);n.colorSpace=Je.workingColorSpace,this._colorsTexture=n}_initializeGeometry(e){let t=this.geometry,n=this._maxVertexCount,i=this._maxIndexCount;if(this._geometryInitialized===!1){for(let s in e.attributes){let o=e.getAttribute(s),{array:a,itemSize:l,normalized:c}=o,h=new a.constructor(n*l),u=new Qe(h,l,c);t.setAttribute(s,u)}if(e.getIndex()!==null){let s=n>65535?new Uint32Array(i):new Uint16Array(i);t.setIndex(new Qe(s,1))}this._geometryInitialized=!0}}_validateGeometry(e){let t=this.geometry;if(!!e.getIndex()!=!!t.getIndex())throw new Error('THREE.BatchedMesh: All geometries must consistently have "index".');for(let n in t.attributes){if(!e.hasAttribute(n))throw new Error(`THREE.BatchedMesh: Added geometry missing "${n}". All geometries must have consistent attributes.`);let i=e.getAttribute(n),s=t.getAttribute(n);if(i.itemSize!==s.itemSize||i.normalized!==s.normalized)throw new Error("THREE.BatchedMesh: All attributes must have a consistent itemSize and normalized value.")}}validateInstanceId(e){let t=this._instanceInfo;if(e<0||e>=t.length||t[e].active===!1)throw new Error(`THREE.BatchedMesh: Invalid instanceId ${e}. Instance is either out of range or has been deleted.`)}validateGeometryId(e){let t=this._geometryInfo;if(e<0||e>=t.length||t[e].active===!1)throw new Error(`THREE.BatchedMesh: Invalid geometryId ${e}. Geometry is either out of range or has been deleted.`)}setCustomSort(e){return this.customSort=e,this}computeBoundingBox(){this.boundingBox===null&&(this.boundingBox=new Ft);let e=this.boundingBox,t=this._instanceInfo;e.makeEmpty();for(let n=0,i=t.length;n<i;n++){if(t[n].active===!1)continue;let s=t[n].geometryIndex;this.getMatrixAt(n,pn),this.getBoundingBoxAt(s,fc).applyMatrix4(pn),e.union(fc)}}computeBoundingSphere(){this.boundingSphere===null&&(this.boundingSphere=new Nt);let e=this.boundingSphere,t=this._instanceInfo;e.makeEmpty();for(let n=0,i=t.length;n<i;n++){if(t[n].active===!1)continue;let s=t[n].geometryIndex;this.getMatrixAt(n,pn),this.getBoundingSphereAt(s,gs).applyMatrix4(pn),e.union(gs)}}addInstance(e){if(this._instanceInfo.length>=this.maxInstanceCount&&this._availableInstanceIds.length===0)throw new Error("THREE.BatchedMesh: Maximum item count reached.");let n={visible:!0,active:!0,geometryIndex:e},i=null;this._availableInstanceIds.length>0?(this._availableInstanceIds.sort(Wu),i=this._availableInstanceIds.shift(),this._instanceInfo[i]=n):(i=this._instanceInfo.length,this._instanceInfo.push(n));let s=this._matricesTexture;pn.identity().toArray(s.image.data,i*16),s.needsUpdate=!0;let o=this._colorsTexture;return o&&(p0.toArray(o.image.data,i*4),o.needsUpdate=!0),this._visibilityChanged=!0,i}addGeometry(e,t=-1,n=-1){this._initializeGeometry(e),this._validateGeometry(e);let i={vertexStart:-1,vertexCount:-1,reservedVertexCount:-1,indexStart:-1,indexCount:-1,reservedIndexCount:-1,start:-1,count:-1,boundingBox:null,boundingSphere:null,active:!0},s=this._geometryInfo;i.vertexStart=this._nextVertexStart,i.reservedVertexCount=t===-1?e.getAttribute("position").count:t;let o=e.getIndex();if(o!==null&&(i.indexStart=this._nextIndexStart,i.reservedIndexCount=n===-1?o.count:n),i.indexStart!==-1&&i.indexStart+i.reservedIndexCount>this._maxIndexCount||i.vertexStart+i.reservedVertexCount>this._maxVertexCount)throw new Error("THREE.BatchedMesh: Reserved space request exceeds the maximum buffer size.");let l;return this._availableGeometryIds.length>0?(this._availableGeometryIds.sort(Wu),l=this._availableGeometryIds.shift(),s[l]=i):(l=this._geometryCount,this._geometryCount++,s.push(i)),this.setGeometryAt(l,e),this._nextIndexStart=i.indexStart+i.reservedIndexCount,this._nextVertexStart=i.vertexStart+i.reservedVertexCount,l}setGeometryAt(e,t){if(e>=this._geometryCount)throw new Error("THREE.BatchedMesh: Maximum geometry count reached.");this._validateGeometry(t);let n=this.geometry,i=n.getIndex()!==null,s=n.getIndex(),o=t.getIndex(),a=this._geometryInfo[e];if(i&&o.count>a.reservedIndexCount||t.attributes.position.count>a.reservedVertexCount)throw new Error("THREE.BatchedMesh: Reserved space not large enough for provided geometry.");let l=a.vertexStart,c=a.reservedVertexCount;a.vertexCount=t.getAttribute("position").count;for(let h in n.attributes){let u=t.getAttribute(h),d=n.getAttribute(h);x0(u,d,l);let f=u.itemSize;for(let p=u.count,_=c;p<_;p++){let g=l+p;for(let m=0;m<f;m++)d.setComponent(g,m,0)}d.needsUpdate=!0,d.addUpdateRange(l*f,c*f)}if(i){let h=a.indexStart,u=a.reservedIndexCount;a.indexCount=t.getIndex().count;for(let d=0;d<o.count;d++)s.setX(h+d,l+o.getX(d));for(let d=o.count,f=u;d<f;d++)s.setX(h+d,l);s.needsUpdate=!0,s.addUpdateRange(h,a.reservedIndexCount)}return a.start=i?a.indexStart:a.vertexStart,a.count=i?a.indexCount:a.vertexCount,a.boundingBox=null,t.boundingBox!==null&&(a.boundingBox=t.boundingBox.clone()),a.boundingSphere=null,t.boundingSphere!==null&&(a.boundingSphere=t.boundingSphere.clone()),this._visibilityChanged=!0,e}deleteGeometry(e){let t=this._geometryInfo;if(e>=t.length||t[e].active===!1)return this;let n=this._instanceInfo;for(let i=0,s=n.length;i<s;i++)n[i].active&&n[i].geometryIndex===e&&this.deleteInstance(i);return t[e].active=!1,this._availableGeometryIds.push(e),this._visibilityChanged=!0,this}deleteInstance(e){return this.validateInstanceId(e),this._instanceInfo[e].active=!1,this._availableInstanceIds.push(e),this._visibilityChanged=!0,this}optimize(){let e=0,t=0,n=this._geometryInfo,i=n.map((o,a)=>a).sort((o,a)=>n[o].vertexStart-n[a].vertexStart),s=this.geometry;for(let o=0,a=n.length;o<a;o++){let l=i[o],c=n[l];if(c.active!==!1){if(s.index!==null){if(c.indexStart!==t){let{indexStart:h,vertexStart:u,reservedIndexCount:d}=c,f=s.index,p=f.array,_=e-u;for(let g=h;g<h+d;g++)p[g]=p[g]+_;f.array.copyWithin(t,h,h+d),f.addUpdateRange(t,d),f.needsUpdate=!0,c.indexStart=t}t+=c.reservedIndexCount}if(c.vertexStart!==e){let{vertexStart:h,reservedVertexCount:u}=c,d=s.attributes;for(let f in d){let p=d[f],{array:_,itemSize:g}=p;_.copyWithin(e*g,h*g,(h+u)*g),p.addUpdateRange(e*g,u*g),p.needsUpdate=!0}c.vertexStart=e}e+=c.reservedVertexCount,c.start=s.index?c.indexStart:c.vertexStart}}return this._nextIndexStart=t,this._nextVertexStart=e,this._visibilityChanged=!0,this}getBoundingBoxAt(e,t){if(e>=this._geometryCount)return null;let n=this.geometry,i=this._geometryInfo[e];if(i.boundingBox===null){let s=new Ft,o=n.index,a=n.attributes.position;for(let l=i.start,c=i.start+i.count;l<c;l++){let h=l;o&&(h=o.getX(h)),s.expandByPoint(Lo.fromBufferAttribute(a,h))}i.boundingBox=s}return t.copy(i.boundingBox),t}getBoundingSphereAt(e,t){if(e>=this._geometryCount)return null;let n=this.geometry,i=this._geometryInfo[e];if(i.boundingSphere===null){let s=new Nt;this.getBoundingBoxAt(e,fc),fc.getCenter(s.center);let o=n.index,a=n.attributes.position,l=0;for(let c=i.start,h=i.start+i.count;c<h;c++){let u=c;o&&(u=o.getX(u)),Lo.fromBufferAttribute(a,u),l=Math.max(l,s.center.distanceToSquared(Lo))}s.radius=Math.sqrt(l),i.boundingSphere=s}return t.copy(i.boundingSphere),t}setMatrixAt(e,t){this.validateInstanceId(e);let n=this._matricesTexture,i=this._matricesTexture.image.data;return t.toArray(i,e*16),n.needsUpdate=!0,this}getMatrixAt(e,t){return this.validateInstanceId(e),t.fromArray(this._matricesTexture.image.data,e*16)}setColorAt(e,t){return this.validateInstanceId(e),this._colorsTexture===null&&this._initColorsTexture(),t.toArray(this._colorsTexture.image.data,e*4),this._colorsTexture.needsUpdate=!0,this}getColorAt(e,t){return this.validateInstanceId(e),this._colorsTexture===null?t.isVector4?t.set(1,1,1,1):t.setRGB(1,1,1):t.fromArray(this._colorsTexture.image.data,e*4)}setVisibleAt(e,t){return this.validateInstanceId(e),this._instanceInfo[e].visible===t?this:(this._instanceInfo[e].visible=t,this._visibilityChanged=!0,this)}getVisibleAt(e){return this.validateInstanceId(e),this._instanceInfo[e].visible}setGeometryIdAt(e,t){return this.validateInstanceId(e),this.validateGeometryId(t),this._instanceInfo[e].geometryIndex=t,this._visibilityChanged=!0,this}getGeometryIdAt(e){return this.validateInstanceId(e),this._instanceInfo[e].geometryIndex}getGeometryRangeAt(e,t={}){this.validateGeometryId(e);let n=this._geometryInfo[e];return t.vertexStart=n.vertexStart,t.vertexCount=n.vertexCount,t.reservedVertexCount=n.reservedVertexCount,t.indexStart=n.indexStart,t.indexCount=n.indexCount,t.reservedIndexCount=n.reservedIndexCount,t.start=n.start,t.count=n.count,t}setInstanceCount(e){let t=this._availableInstanceIds,n=this._instanceInfo;for(t.sort(Wu);t[t.length-1]===n.length-1;)n.pop(),t.pop();if(e<n.length)throw new Error(`THREE.BatchedMesh: Instance ids outside the range ${e} are being used. Cannot shrink instance count.`);let i=new Int32Array(e),s=new Int32Array(e);_s(this._multiDrawCounts,i),_s(this._multiDrawStarts,s),this._multiDrawCounts=i,this._multiDrawStarts=s,this._maxInstanceCount=e;let o=this._indirectTexture,a=this._matricesTexture,l=this._colorsTexture;o.dispose(),this._initIndirectTexture(),_s(o.image.data,this._indirectTexture.image.data),a.dispose(),this._initMatricesTexture(),_s(a.image.data,this._matricesTexture.image.data),l&&(l.dispose(),this._initColorsTexture(),_s(l.image.data,this._colorsTexture.image.data))}setGeometrySize(e,t){let n=[...this._geometryInfo].filter(a=>a.active);if(Math.max(...n.map(a=>a.vertexStart+a.reservedVertexCount))>e)throw new Error(`THREE.BatchedMesh: Geometry vertex values are being used outside the range ${t}. Cannot shrink further.`);if(this.geometry.index&&Math.max(...n.map(l=>l.indexStart+l.reservedIndexCount))>t)throw new Error(`THREE.BatchedMesh: Geometry index values are being used outside the range ${t}. Cannot shrink further.`);let s=this.geometry;s.dispose(),this._maxVertexCount=e,this._maxIndexCount=t,this._geometryInitialized&&(this._geometryInitialized=!1,this.geometry=new Oe,this._initializeGeometry(s));let o=this.geometry;s.index&&_s(s.index.array,o.index.array);for(let a in s.attributes)_s(s.attributes[a].array,o.attributes[a].array)}raycast(e,t){let n=this._instanceInfo,i=this._geometryInfo,s=this.matrixWorld,o=this.geometry;Qt.material=this.material,Qt.geometry.index=o.index,Qt.geometry.attributes=o.attributes,Qt.geometry.boundingBox===null&&(Qt.geometry.boundingBox=new Ft),Qt.geometry.boundingSphere===null&&(Qt.geometry.boundingSphere=new Nt);for(let a=0,l=n.length;a<l;a++){if(!n[a].visible||!n[a].active)continue;let c=n[a].geometryIndex,h=i[c];Qt.geometry.setDrawRange(h.start,h.count),this.getMatrixAt(a,Qt.matrixWorld).premultiply(s),this.getBoundingBoxAt(c,Qt.geometry.boundingBox),this.getBoundingSphereAt(c,Qt.geometry.boundingSphere),Qt.raycast(e,pc);for(let u=0,d=pc.length;u<d;u++){let f=pc[u];f.object=this,f.batchId=a,t.push(f)}pc.length=0}Qt.material=null,Qt.geometry.index=null,Qt.geometry.attributes={},Qt.geometry.setDrawRange(0,1/0)}copy(e){return super.copy(e),this.geometry=e.geometry.clone(),this.perObjectFrustumCulled=e.perObjectFrustumCulled,this.sortObjects=e.sortObjects,this.boundingBox=e.boundingBox!==null?e.boundingBox.clone():null,this.boundingSphere=e.boundingSphere!==null?e.boundingSphere.clone():null,this._geometryInfo=e._geometryInfo.map(t=>({...t,boundingBox:t.boundingBox!==null?t.boundingBox.clone():null,boundingSphere:t.boundingSphere!==null?t.boundingSphere.clone():null})),this._instanceInfo=e._instanceInfo.map(t=>({...t})),this._availableInstanceIds=e._availableInstanceIds.slice(),this._availableGeometryIds=e._availableGeometryIds.slice(),this._nextIndexStart=e._nextIndexStart,this._nextVertexStart=e._nextVertexStart,this._geometryCount=e._geometryCount,this._maxInstanceCount=e._maxInstanceCount,this._maxVertexCount=e._maxVertexCount,this._maxIndexCount=e._maxIndexCount,this._geometryInitialized=e._geometryInitialized,this._multiDrawCounts=e._multiDrawCounts.slice(),this._multiDrawStarts=e._multiDrawStarts.slice(),this._multiDrawBytesPerElement=e._multiDrawBytesPerElement,this._indirectTexture=e._indirectTexture.clone(),this._indirectTexture.image.data=this._indirectTexture.image.data.slice(),this._matricesTexture=e._matricesTexture.clone(),this._matricesTexture.image.data=this._matricesTexture.image.data.slice(),this._colorsTexture!==null&&(this._colorsTexture=e._colorsTexture.clone(),this._colorsTexture.image.data=this._colorsTexture.image.data.slice()),this}dispose(){super.dispose(),this.geometry.dispose(),this._matricesTexture.dispose(),this._matricesTexture=null,this._indirectTexture.dispose(),this._indirectTexture=null,this._colorsTexture!==null&&(this._colorsTexture.dispose(),this._colorsTexture=null)}onBeforeRender(e,t,n,i,s){if(!this._visibilityChanged&&!this.perObjectFrustumCulled&&!this.sortObjects)return;let o=i.getIndex(),a=o===null?1:o.array.BYTES_PER_ELEMENT,l=1;s.wireframe&&(l=2,a=i.attributes.position.count>65535?4:2);let c=this._instanceInfo,h=this._multiDrawStarts,u=this._multiDrawCounts,d=this._geometryInfo,f=this.perObjectFrustumCulled,p=this._indirectTexture,_=p.image.data,g=n.isArrayCamera?g0:m0;f&&(n.isArrayCamera?g.setFromArrayCamera(n):(pn.multiplyMatrices(n.projectionMatrix,n.matrixWorldInverse).multiply(this.matrixWorld),g.setFromProjectionMatrix(pn,n.coordinateSystem,n.reversedDepth)));let m=0;if(this.sortObjects){pn.copy(this.matrixWorld).invert(),Lo.setFromMatrixPosition(n.matrixWorld).applyMatrix4(pn),kp.set(0,0,-1).transformDirection(n.matrixWorld).transformDirection(pn);for(let x=0,T=c.length;x<T;x++)if(c[x].visible&&c[x].active){let S=c[x].geometryIndex;this.getMatrixAt(x,pn),this.getBoundingSphereAt(S,gs).applyMatrix4(pn);let w=!1;if(f&&(w=!g.intersectsSphere(gs)),!w){let v=d[S],E=_0.subVectors(gs.center,Lo).dot(kp);Xu.push(v.start,v.count,E,x)}}let y=Xu.list,b=this.customSort;b===null?y.sort(s.transparent?f0:d0):b.call(this,y,n);for(let x=0,T=y.length;x<T;x++){let S=y[x];h[m]=S.start*a*l,u[m]=S.count*l,_[m]=S.index,m++}Xu.reset()}else for(let y=0,b=c.length;y<b;y++)if(c[y].visible&&c[y].active){let x=c[y].geometryIndex,T=!1;if(f&&(this.getMatrixAt(y,pn),this.getBoundingSphereAt(x,gs).applyMatrix4(pn),T=!g.intersectsSphere(gs)),!T){let S=d[x];h[m]=S.start*a*l,u[m]=S.count*l,_[m]=y,m++}}p.needsUpdate=!0,this._multiDrawCount=m,this._multiDrawBytesPerElement=a,this._visibilityChanged=!1}onBeforeShadow(e,t,n,i,s,o){this.onBeforeRender(e,null,i,s,o)}},Rt=class extends vt{constructor(e){super(),this.isLineBasicMaterial=!0,this.type="LineBasicMaterial",this.color=new ce(16777215),this.map=null,this.linewidth=1,this.linecap="round",this.linejoin="round",this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.map=e.map,this.linewidth=e.linewidth,this.linecap=e.linecap,this.linejoin=e.linejoin,this.fog=e.fog,this}},Xc=new R,qc=new R,Vp=new ze,No=new Jn,mc=new Nt,qu=new R,Gp=new R,En=class extends st{constructor(e=new Oe,t=new Rt){super(),this.isLine=!0,this.type="Line",this.geometry=e,this.material=t,this.morphTargetDictionary=void 0,this.morphTargetInfluences=void 0,this.updateMorphTargets()}copy(e,t){return super.copy(e,t),this.material=Array.isArray(e.material)?e.material.slice():e.material,this.geometry=e.geometry,this}computeLineDistances(){let e=this.geometry;if(e.index===null){let t=e.attributes.position,n=[0];for(let i=1,s=t.count;i<s;i++)Xc.fromBufferAttribute(t,i-1),qc.fromBufferAttribute(t,i),n[i]=n[i-1],n[i]+=Xc.distanceTo(qc);e.setAttribute("lineDistance",new fe(n,1))}else de("Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");return this}intersectsFrustum(e){return e.intersectsObject(this)}raycast(e,t){let n=this.geometry,i=this.matrixWorld,s=e.params.Line.threshold,o=n.drawRange;if(n.boundingSphere===null&&n.computeBoundingSphere(),mc.copy(n.boundingSphere),mc.applyMatrix4(i),mc.radius+=s,e.ray.intersectsSphere(mc)===!1)return;Vp.copy(i).invert(),No.copy(e.ray).applyMatrix4(Vp);let a=s/((this.scale.x+this.scale.y+this.scale.z)/3),l=a*a,c=this.isLineSegments?2:1,h=n.index,d=n.attributes.position;if(h!==null){let f=Math.max(0,o.start),p=Math.min(h.count,o.start+o.count);for(let _=f,g=p-1;_<g;_+=c){let m=h.getX(_),y=h.getX(_+1),b=gc(this,e,No,l,m,y,_);b&&t.push(b)}if(this.isLineLoop){let _=h.getX(p-1),g=h.getX(f),m=gc(this,e,No,l,_,g,p-1);m&&t.push(m)}}else{let f=Math.max(0,o.start),p=Math.min(d.count,o.start+o.count);for(let _=f,g=p-1;_<g;_+=c){let m=gc(this,e,No,l,_,_+1,_);m&&t.push(m)}if(this.isLineLoop){let _=gc(this,e,No,l,p-1,f,p-1);_&&t.push(_)}}}updateMorphTargets(){let t=this.geometry.morphAttributes,n=Object.keys(t);if(n.length>0){let i=t[n[0]];if(i!==void 0){this.morphTargetInfluences=[],this.morphTargetDictionary={};for(let s=0,o=i.length;s<o;s++){let a=i[s].name||String(s);this.morphTargetInfluences.push(0),this.morphTargetDictionary[a]=s}}}}};function gc(r,e,t,n,i,s,o){let a=r.geometry.attributes.position;if(Xc.fromBufferAttribute(a,i),qc.fromBufferAttribute(a,s),t.distanceSqToSegment(Xc,qc,qu,Gp)>n)return;qu.applyMatrix4(r.matrixWorld);let c=e.ray.origin.distanceTo(qu);if(!(c<e.near||c>e.far))return{distance:c,point:Gp.clone().applyMatrix4(r.matrixWorld),index:o,face:null,faceIndex:null,barycoord:null,object:r}}var Hp=new R,Wp=new R,Xt=class extends En{constructor(e,t){super(e,t),this.isLineSegments=!0,this.type="LineSegments"}computeLineDistances(){let e=this.geometry;if(e.index===null){let t=e.attributes.position,n=[];for(let i=0,s=t.count;i<s;i+=2)Hp.fromBufferAttribute(t,i),Wp.fromBufferAttribute(t,i+1),n[i]=i===0?0:n[i-1],n[i+1]=n[i]+Hp.distanceTo(Wp);e.setAttribute("lineDistance",new fe(n,1))}else de("LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");return this}},Ds=class extends En{constructor(e,t){super(e,t),this.isLineLoop=!0,this.type="LineLoop"}},wn=class extends vt{constructor(e){super(),this.isPointsMaterial=!0,this.type="PointsMaterial",this.color=new ce(16777215),this.map=null,this.alphaMap=null,this.size=1,this.sizeAttenuation=!0,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.map=e.map,this.alphaMap=e.alphaMap,this.size=e.size,this.sizeAttenuation=e.sizeAttenuation,this.fog=e.fog,this}},Xp=new ze,rd=new Jn,_c=new Nt,xc=new R,jn=class extends st{constructor(e=new Oe,t=new wn){super(),this.isPoints=!0,this.type="Points",this.geometry=e,this.material=t,this.morphTargetDictionary=void 0,this.morphTargetInfluences=void 0,this.updateMorphTargets()}copy(e,t){return super.copy(e,t),this.material=Array.isArray(e.material)?e.material.slice():e.material,this.geometry=e.geometry,this}intersectsFrustum(e){return e.intersectsObject(this)}raycast(e,t){let n=this.geometry,i=this.matrixWorld,s=e.params.Points.threshold,o=n.drawRange;if(n.boundingSphere===null&&n.computeBoundingSphere(),_c.copy(n.boundingSphere),_c.applyMatrix4(i),_c.radius+=s,e.ray.intersectsSphere(_c)===!1)return;Xp.copy(i).invert(),rd.copy(e.ray).applyMatrix4(Xp);let a=s/((this.scale.x+this.scale.y+this.scale.z)/3),l=a*a,c=n.index,u=n.attributes.position;if(c!==null){let d=Math.max(0,o.start),f=Math.min(c.count,o.start+o.count);for(let p=d,_=f;p<_;p++){let g=c.getX(p);xc.fromBufferAttribute(u,g),qp(xc,g,l,i,e,t,this)}}else{let d=Math.max(0,o.start),f=Math.min(u.count,o.start+o.count);for(let p=d,_=f;p<_;p++)xc.fromBufferAttribute(u,p),qp(xc,p,l,i,e,t,this)}}updateMorphTargets(){let t=this.geometry.morphAttributes,n=Object.keys(t);if(n.length>0){let i=t[n[0]];if(i!==void 0){this.morphTargetInfluences=[],this.morphTargetDictionary={};for(let s=0,o=i.length;s<o;s++){let a=i[s].name||String(s);this.morphTargetInfluences.push(0),this.morphTargetDictionary[a]=s}}}}};function qp(r,e,t,n,i,s,o){let a=rd.distanceSqToPoint(r);if(a<t){let l=new R;rd.closestPointToPoint(r,l),l.applyMatrix4(n);let c=i.ray.origin.distanceTo(l);if(c<i.near||c>i.far)return;s.push({distance:c,distanceToRay:Math.sqrt(a),point:l,index:e,face:null,faceIndex:null,barycoord:null,object:o})}}var na=class extends Et{constructor(e,t,n,i,s=pt,o=pt,a,l,c){super(e,t,n,i,s,o,a,l,c),this.isVideoTexture=!0,this.generateMipmaps=!1,this._requestVideoFrameCallbackId=0;let h=this;function u(){h.needsUpdate=!0,h._requestVideoFrameCallbackId=e.requestVideoFrameCallback(u)}"requestVideoFrameCallback"in e&&(this._requestVideoFrameCallbackId=e.requestVideoFrameCallback(u))}clone(){return new this.constructor(this.image).copy(this)}update(){let e=this.image;"requestVideoFrameCallback"in e===!1&&e.readyState>=e.HAVE_CURRENT_DATA&&(this.needsUpdate=!0)}dispose(){this._requestVideoFrameCallbackId!==0&&(this.source.data.cancelVideoFrameCallback(this._requestVideoFrameCallbackId),this._requestVideoFrameCallbackId=0),super.dispose()}},Yc=class extends na{constructor(e,t,n,i,s,o,a,l){super({},e,t,n,i,s,o,a,l),this.isVideoFrameTexture=!0}update(){}clone(){return new this.constructor().copy(this)}setFrame(e){this.image=e,this.needsUpdate=!0}},Zc=class extends Et{constructor(e,t){super({width:e,height:t}),this.isFramebufferTexture=!0,this.magFilter=At,this.minFilter=At,this.generateMipmaps=!1,this.needsUpdate=!0}},Us=class extends Et{constructor(e,t,n,i,s,o,a,l,c,h,u,d){super(null,o,a,l,c,h,i,s,u,d),this.isCompressedTexture=!0,this.image={width:t,height:n},this.mipmaps=e,this.flipY=!1,this.generateMipmaps=!1}},Kc=class extends Us{constructor(e,t,n,i,s,o){super(e,t,n,s,o),this.isCompressedArrayTexture=!0,this.image.depth=i,this.wrapR=Yt,this.layerUpdates=new Set}copy(e){return super.copy(e),this.wrapR=e.wrapR,this}addLayerUpdate(e){this.layerUpdates.add(e)}clearLayerUpdates(){this.layerUpdates.clear()}},Jc=class extends Us{constructor(e,t,n){super(void 0,e[0].width,e[0].height,t,n,ni),this.isCompressedCubeTexture=!0,this.isCubeTexture=!0,this.image=e}},ss=class extends Et{constructor(e=[],t=ni,n,i,s,o,a,l,c,h){super(e,t,n,i,s,o,a,l,c,h),this.isCubeTexture=!0,this.flipY=!1}get images(){return this.image}set images(e){this.image=e}},jc=class extends Et{constructor(e,t,n,i,s,o,a,l,c){super(e,t,n,i,s,o,a,l,c),this.isCanvasTexture=!0,this.needsUpdate=!0}},$c=class extends Et{constructor(e,t,n,i,s,o,a,l,c){super(e,t,n,i,s,o,a,l,c),this.isHTMLTexture=!0,this.generateMipmaps=!1,this.needsUpdate=!0;let h=e?e.parentNode:null;h!==null&&"requestPaint"in h&&(h.onpaint=()=>{this.needsUpdate=!0},h.requestPaint())}dispose(){let e=this.image?this.image.parentNode:null;e!==null&&"onpaint"in e&&(e.onpaint=null),super.dispose()}},Pi=class extends 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p=Math.acos(He(i[f-1].dot(i[f]),-1,1));s[f].applyMatrix4(l.makeRotationAxis(a,p))}o[f].crossVectors(i[f],s[f])}if(t===!0){let f=Math.acos(He(s[0].dot(s[e]),-1,1));f/=e,i[0].dot(a.crossVectors(s[0],s[e]))>0&&(f=-f);for(let p=1;p<=e;p++)s[p].applyMatrix4(l.makeRotationAxis(i[p],f*p)),o[p].crossVectors(i[p],s[p])}return{tangents:i,normals:s,binormals:o}}clone(){return new this.constructor().copy(this)}copy(e){return this.arcLengthDivisions=e.arcLengthDivisions,this}toJSON(){let e={metadata:{version:4.7,type:"Curve",generator:"Curve.toJSON"}};return e.arcLengthDivisions=this.arcLengthDivisions,e.type=this.type,e}fromJSON(e){return this.arcLengthDivisions=e.arcLengthDivisions,this}},Fs=class extends yn{constructor(e=0,t=0,n=1,i=1,s=0,o=Math.PI*2,a=!1,l=0){super(),this.isEllipseCurve=!0,this.type="EllipseCurve",this.aX=e,this.aY=t,this.xRadius=n,this.yRadius=i,this.aStartAngle=s,this.aEndAngle=o,this.aClockwise=a,this.aRotation=l}getPoint(e,t=new J){let n=t,i=Math.PI*2,s=this.aEndAngle-this.aStartAngle,o=Math.abs(s)<Number.EPSILON;for(;s<0;)s+=i;for(;s>i;)s-=i;s<Number.EPSILON&&(o?s=0:s=i),this.aClockwise===!0&&!o&&(s===i?s=-i:s=s-i);let a=this.aStartAngle+e*s,l=this.aX+this.xRadius*Math.cos(a),c=this.aY+this.yRadius*Math.sin(a);if(this.aRotation!==0){let h=Math.cos(this.aRotation),u=Math.sin(this.aRotation),d=l-this.aX,f=c-this.aY;l=d*h-f*u+this.aX,c=d*u+f*h+this.aY}return n.set(l,c)}copy(e){return super.copy(e),this.aX=e.aX,this.aY=e.aY,this.xRadius=e.xRadius,this.yRadius=e.yRadius,this.aStartAngle=e.aStartAngle,this.aEndAngle=e.aEndAngle,this.aClockwise=e.aClockwise,this.aRotation=e.aRotation,this}toJSON(){let e=super.toJSON();return e.aX=this.aX,e.aY=this.aY,e.xRadius=this.xRadius,e.yRadius=this.yRadius,e.aStartAngle=this.aStartAngle,e.aEndAngle=this.aEndAngle,e.aClockwise=this.aClockwise,e.aRotation=this.aRotation,e}fromJSON(e){return super.fromJSON(e),this.aX=e.aX,this.aY=e.aY,this.xRadius=e.xRadius,this.yRadius=e.yRadius,this.aStartAngle=e.aStartAngle,this.aEndAngle=e.aEndAngle,this.aClockwise=e.aClockwise,this.aRotation=e.aRotation,this}},la=class extends Fs{constructor(e,t,n,i,s,o){super(e,t,n,n,i,s,o),this.isArcCurve=!0,this.type="ArcCurve"}};function tf(){let r=0,e=0,t=0,n=0;function i(s,o,a,l){r=s,e=a,t=-3*s+3*o-2*a-l,n=2*s-2*o+a+l}return{initCatmullRom:function(s,o,a,l,c){i(o,a,c*(a-s),c*(l-o))},initNonuniformCatmullRom:function(s,o,a,l,c,h,u){let d=(o-s)/c-(a-s)/(c+h)+(a-o)/h,f=(a-o)/h-(l-o)/(h+u)+(l-a)/u;d*=h,f*=h,i(o,a,d,f)},calc:function(s){let o=s*s,a=o*s;return r+e*s+t*o+n*a}}}var Yp=new R,Zp=new R,Zu=new tf,Ku=new tf,Ju=new tf,ca=class extends yn{constructor(e=[],t=!1,n="centripetal",i=.5){super(),this.isCatmullRomCurve3=!0,this.type="CatmullRomCurve3",this.points=e,this.closed=t,this.curveType=n,this.tension=i}getPoint(e,t=new R){let n=t,i=this.points,s=i.length,o=(s-(this.closed?0:1))*e,a=Math.floor(o),l=o-a;this.closed?a+=a>0?0:(Math.floor(Math.abs(a)/s)+1)*s:l===0&&a===s-1&&(a=s-2,l=1);let c,h;this.closed||a>0?c=i[(a-1)%s]:(Zp.subVectors(i[0],i[1]).add(i[0]),c=Zp);let u=i[a%s],d=i[(a+1)%s];if(this.closed||a+2<s?h=i[(a+2)%s]:(Yp.subVectors(i[s-1],i[s-2]).add(i[s-1]),h=Yp),this.curveType==="centripetal"||this.curveType==="chordal"){let f=this.curveType==="chordal"?.5:.25,p=Math.pow(c.distanceToSquared(u),f),_=Math.pow(u.distanceToSquared(d),f),g=Math.pow(d.distanceToSquared(h),f);_<1e-4&&(_=1),p<1e-4&&(p=_),g<1e-4&&(g=_),Zu.initNonuniformCatmullRom(c.x,u.x,d.x,h.x,p,_,g),Ku.initNonuniformCatmullRom(c.y,u.y,d.y,h.y,p,_,g),Ju.initNonuniformCatmullRom(c.z,u.z,d.z,h.z,p,_,g)}else this.curveType==="catmullrom"&&(Zu.initCatmullRom(c.x,u.x,d.x,h.x,this.tension),Ku.initCatmullRom(c.y,u.y,d.y,h.y,this.tension),Ju.initCatmullRom(c.z,u.z,d.z,h.z,this.tension));return n.set(Zu.calc(l),Ku.calc(l),Ju.calc(l)),n}copy(e){super.copy(e),this.points=[];for(let t=0,n=e.points.length;t<n;t++){let i=e.points[t];this.points.push(i.clone())}return this.closed=e.closed,this.curveType=e.curveType,this.tension=e.tension,this}toJSON(){let e=super.toJSON();e.points=[];for(let t=0,n=this.points.length;t<n;t++){let i=this.points[t];e.points.push(i.toArray())}return e.closed=this.closed,e.curveType=this.curveType,e.tension=this.tension,e}fromJSON(e){super.fromJSON(e),this.points=[];for(let t=0,n=e.points.length;t<n;t++){let i=e.points[t];this.points.push(new R().fromArray(i))}return this.closed=e.closed,this.curveType=e.curveType,this.tension=e.tension,this}};function Kp(r,e,t,n,i){let s=(n-e)*.5,o=(i-t)*.5,a=r*r,l=r*a;return(2*t-2*n+s+o)*l+(-3*t+3*n-2*s-o)*a+s*r+t}function y0(r,e){let t=1-r;return t*t*e}function v0(r,e){return 2*(1-r)*r*e}function M0(r,e){return r*r*e}function zo(r,e,t,n){return y0(r,e)+v0(r,t)+M0(r,n)}function S0(r,e){let t=1-r;return t*t*t*e}function b0(r,e){let t=1-r;return 3*t*t*r*e}function T0(r,e){return 3*(1-r)*r*r*e}function A0(r,e){return r*r*r*e}function ko(r,e,t,n,i){return S0(r,e)+b0(r,t)+T0(r,n)+A0(r,i)}var Fr=class extends yn{constructor(e=new J,t=new J,n=new J,i=new J){super(),this.isCubicBezierCurve=!0,this.type="CubicBezierCurve",this.v0=e,this.v1=t,this.v2=n,this.v3=i}getPoint(e,t=new J){let n=t,i=this.v0,s=this.v1,o=this.v2,a=this.v3;return n.set(ko(e,i.x,s.x,o.x,a.x),ko(e,i.y,s.y,o.y,a.y)),n}copy(e){return super.copy(e),this.v0.copy(e.v0),this.v1.copy(e.v1),this.v2.copy(e.v2),this.v3.copy(e.v3),this}toJSON(){let e=super.toJSON();return e.v0=this.v0.toArray(),e.v1=this.v1.toArray(),e.v2=this.v2.toArray(),e.v3=this.v3.toArray(),e}fromJSON(e){return super.fromJSON(e),this.v0.fromArray(e.v0),this.v1.fromArray(e.v1),this.v2.fromArray(e.v2),this.v3.fromArray(e.v3),this}},ha=class extends yn{constructor(e=new R,t=new R,n=new R,i=new R){super(),this.isCubicBezierCurve3=!0,this.type="CubicBezierCurve3",this.v0=e,this.v1=t,this.v2=n,this.v3=i}getPoint(e,t=new R){let n=t,i=this.v0,s=this.v1,o=this.v2,a=this.v3;return n.set(ko(e,i.x,s.x,o.x,a.x),ko(e,i.y,s.y,o.y,a.y),ko(e,i.z,s.z,o.z,a.z)),n}copy(e){return super.copy(e),this.v0.copy(e.v0),this.v1.copy(e.v1),this.v2.copy(e.v2),this.v3.copy(e.v3),this}toJSON(){let e=super.toJSON();return e.v0=this.v0.toArray(),e.v1=this.v1.toArray(),e.v2=this.v2.toArray(),e.v3=this.v3.toArray(),e}fromJSON(e){return super.fromJSON(e),this.v0.fromArray(e.v0),this.v1.fromArray(e.v1),this.v2.fromArray(e.v2),this.v3.fromArray(e.v3),this}},Or=class extends yn{constructor(e=new J,t=new J){super(),this.isLineCurve=!0,this.type="LineCurve",this.v1=e,this.v2=t}getPoint(e,t=new J){let n=t;return e===1?n.copy(this.v2):(n.copy(this.v2).sub(this.v1),n.multiplyScalar(e).add(this.v1)),n}getPointAt(e,t){return this.getPoint(e,t)}getTangent(e,t=new J){return t.subVectors(this.v2,this.v1).normalize()}getTangentAt(e,t){return this.getTangent(e,t)}copy(e){return super.copy(e),this.v1.copy(e.v1),this.v2.copy(e.v2),this}toJSON(){let e=super.toJSON();return e.v1=this.v1.toArray(),e.v2=this.v2.toArray(),e}fromJSON(e){return super.fromJSON(e),this.v1.fromArray(e.v1),this.v2.fromArray(e.v2),this}},ua=class extends yn{constructor(e=new R,t=new R){super(),this.isLineCurve3=!0,this.type="LineCurve3",this.v1=e,this.v2=t}getPoint(e,t=new R){let n=t;return e===1?n.copy(this.v2):(n.copy(this.v2).sub(this.v1),n.multiplyScalar(e).add(this.v1)),n}getPointAt(e,t){return this.getPoint(e,t)}getTangent(e,t=new R){return t.subVectors(this.v2,this.v1).normalize()}getTangentAt(e,t){return this.getTangent(e,t)}copy(e){return super.copy(e),this.v1.copy(e.v1),this.v2.copy(e.v2),this}toJSON(){let e=super.toJSON();return e.v1=this.v1.toArray(),e.v2=this.v2.toArray(),e}fromJSON(e){return super.fromJSON(e),this.v1.fromArray(e.v1),this.v2.fromArray(e.v2),this}},Br=class extends yn{constructor(e=new J,t=new J,n=new J){super(),this.isQuadraticBezierCurve=!0,this.type="QuadraticBezierCurve",this.v0=e,this.v1=t,this.v2=n}getPoint(e,t=new J){let n=t,i=this.v0,s=this.v1,o=this.v2;return n.set(zo(e,i.x,s.x,o.x),zo(e,i.y,s.y,o.y)),n}copy(e){return super.copy(e),this.v0.copy(e.v0),this.v1.copy(e.v1),this.v2.copy(e.v2),this}toJSON(){let e=super.toJSON();return e.v0=this.v0.toArray(),e.v1=this.v1.toArray(),e.v2=this.v2.toArray(),e}fromJSON(e){return super.fromJSON(e),this.v0.fromArray(e.v0),this.v1.fromArray(e.v1),this.v2.fromArray(e.v2),this}},zr=class extends yn{constructor(e=new R,t=new R,n=new R){super(),this.isQuadraticBezierCurve3=!0,this.type="QuadraticBezierCurve3",this.v0=e,this.v1=t,this.v2=n}getPoint(e,t=new R){let n=t,i=this.v0,s=this.v1,o=this.v2;return n.set(zo(e,i.x,s.x,o.x),zo(e,i.y,s.y,o.y),zo(e,i.z,s.z,o.z)),n}copy(e){return super.copy(e),this.v0.copy(e.v0),this.v1.copy(e.v1),this.v2.copy(e.v2),this}toJSON(){let e=super.toJSON();return e.v0=this.v0.toArray(),e.v1=this.v1.toArray(),e.v2=this.v2.toArray(),e}fromJSON(e){return super.fromJSON(e),this.v0.fromArray(e.v0),this.v1.fromArray(e.v1),this.v2.fromArray(e.v2),this}},kr=class extends yn{constructor(e=[]){super(),this.isSplineCurve=!0,this.type="SplineCurve",this.points=e}getPoint(e,t=new J){let n=t,i=this.points,s=(i.length-1)*e,o=Math.floor(s),a=s-o,l=i[o===0?o:o-1],c=i[o],h=i[o>i.length-2?i.length-1:o+1],u=i[o>i.length-3?i.length-1:o+2];return n.set(Kp(a,l.x,c.x,h.x,u.x),Kp(a,l.y,c.y,h.y,u.y)),n}copy(e){super.copy(e),this.points=[];for(let t=0,n=e.points.length;t<n;t++){let i=e.points[t];this.points.push(i.clone())}return this}toJSON(){let e=super.toJSON();e.points=[];for(let t=0,n=this.points.length;t<n;t++){let i=this.points[t];e.points.push(i.toArray())}return e}fromJSON(e){super.fromJSON(e),this.points=[];for(let t=0,n=e.points.length;t<n;t++){let i=e.points[t];this.points.push(new J().fromArray(i))}return this}},Qc=Object.freeze({__proto__:null,ArcCurve:la,CatmullRomCurve3:ca,CubicBezierCurve:Fr,CubicBezierCurve3:ha,EllipseCurve:Fs,LineCurve:Or,LineCurve3:ua,QuadraticBezierCurve:Br,QuadraticBezierCurve3:zr,SplineCurve:kr}),da=class extends yn{constructor(){super(),this.type="CurvePath",this.curves=[],this.autoClose=!1}add(e){this.curves.push(e)}closePath(){let e=this.curves[0].getPoint(0),t=this.curves[this.curves.length-1].getPoint(1);if(!e.equals(t)){let n=e.isVector2===!0?"LineCurve":"LineCurve3";this.curves.push(new Qc[n](t,e))}return this}getPoint(e,t){let n=e*this.getLength(),i=this.getCurveLengths(),s=0;for(;s<i.length;){if(i[s]>=n){let o=i[s]-n,a=this.curves[s],l=a.getLength(),c=l===0?0:1-o/l;return a.getPointAt(c,t)}s++}return null}getLength(){let e=this.getCurveLengths();return e[e.length-1]}updateArcLengths(){this.needsUpdate=!0,this.cacheLengths=null,this.getCurveLengths()}getCurveLengths(){if(this.cacheLengths&&this.cacheLengths.length===this.curves.length)return this.cacheLengths;let e=[],t=0;for(let n=0,i=this.curves.length;n<i;n++)t+=this.curves[n].getLength(),e.push(t);return this.cacheLengths=e,e}getSpacedPoints(e=40){let t=[];for(let n=0;n<=e;n++)t.push(this.getPoint(n/e));return this.autoClose&&t.push(t[0]),t}getPoints(e=12){let t=[],n;for(let i=0,s=this.curves;i<s.length;i++){let o=s[i],a=o.isEllipseCurve?e*2:o.isLineCurve||o.isLineCurve3?1:o.isSplineCurve?e*o.points.length:e,l=o.getPoints(a);for(let c=0;c<l.length;c++){let h=l[c];n&&n.equals(h)||(t.push(h),n=h)}}return this.autoClose&&t.length>1&&!t[t.length-1].equals(t[0])&&t.push(t[0]),t}copy(e){super.copy(e),this.curves=[];for(let t=0,n=e.curves.length;t<n;t++){let i=e.curves[t];this.curves.push(i.clone())}return this.autoClose=e.autoClose,this}toJSON(){let e=super.toJSON();e.autoClose=this.autoClose,e.curves=[];for(let t=0,n=this.curves.length;t<n;t++){let i=this.curves[t];e.curves.push(i.toJSON())}return e}fromJSON(e){super.fromJSON(e),this.autoClose=e.autoClose,this.curves=[];for(let t=0,n=e.curves.length;t<n;t++){let i=e.curves[t];this.curves.push(new Qc[i.type]().fromJSON(i))}return this}},rs=class extends da{constructor(e){super(),this.type="Path",this.currentPoint=new J,e&&this.setFromPoints(e)}setFromPoints(e){this.moveTo(e[0].x,e[0].y);for(let t=1,n=e.length;t<n;t++)this.lineTo(e[t].x,e[t].y);return this}moveTo(e,t){return this.currentPoint.set(e,t),this}lineTo(e,t){let n=new Or(this.currentPoint.clone(),new J(e,t));return this.curves.push(n),this.currentPoint.set(e,t),this}quadraticCurveTo(e,t,n,i){let s=new Br(this.currentPoint.clone(),new J(e,t),new J(n,i));return this.curves.push(s),this.currentPoint.set(n,i),this}bezierCurveTo(e,t,n,i,s,o){let a=new Fr(this.currentPoint.clone(),new J(e,t),new J(n,i),new J(s,o));return this.curves.push(a),this.currentPoint.set(s,o),this}splineThru(e){let t=[this.currentPoint.clone()].concat(e),n=new kr(t);return 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We(te){i.push(l[te*3+0]),i.push(l[te*3+1]),i.push(l[te*3+2])}function gt(te){s.push(te.x),s.push(te.y)}}}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}toJSON(){let e=super.toJSON(),t=this.parameters.shapes,n=this.parameters.options;return W0(t,n,e)}static fromJSON(e,t){let n=[];for(let s=0,o=e.shapes.length;s<o;s++){let a=t[e.shapes[s]];n.push(a)}let i=e.options.extrudePath;return i!==void 0&&(e.options.extrudePath=new Qc[i.type]().fromJSON(i)),new r(n,e.options)}},H0={generateTopUV:function(r,e,t,n,i){let s=e[t*3],o=e[t*3+1],a=e[n*3],l=e[n*3+1],c=e[i*3],h=e[i*3+1];return[new J(s,o),new J(a,l),new J(c,h)]},generateSideWallUV:function(r,e,t,n,i,s){let o=e[t*3],a=e[t*3+1],l=e[t*3+2],c=e[n*3],h=e[n*3+1],u=e[n*3+2],d=e[i*3],f=e[i*3+1],p=e[i*3+2],_=e[s*3],g=e[s*3+1],m=e[s*3+2];return Math.abs(a-h)<Math.abs(o-c)?[new J(o,1-l),new J(c,1-u),new J(d,1-p),new J(_,1-m)]:[new J(a,1-l),new J(h,1-u),new J(f,1-p),new J(g,1-m)]}};function W0(r,e,t){if(t.shapes=[],Array.isArray(r))for(let n=0,i=r.length;n<i;n++){let s=r[n];t.shapes.push(s.uuid)}else t.shapes.push(r.uuid);return t.options=Object.assign({},e),e.extrudePath!==void 0&&(t.options.extrudePath=e.extrudePath.toJSON()),t}var _a=class r extends Li{constructor(e=1,t=0){let n=(1+Math.sqrt(5))/2,i=[-1,n,0,1,n,0,-1,-n,0,1,-n,0,0,-1,n,0,1,n,0,-1,-n,0,1,-n,n,0,-1,n,0,1,-n,0,-1,-n,0,1],s=[0,11,5,0,5,1,0,1,7,0,7,10,0,10,11,1,5,9,5,11,4,11,10,2,10,7,6,7,1,8,3,9,4,3,4,2,3,2,6,3,6,8,3,8,9,4,9,5,2,4,11,6,2,10,8,6,7,9,8,1];super(i,s,e,t),this.type="IcosahedronGeometry",this.parameters={radius:e,detail:t}}static fromJSON(e){return new r(e.radius,e.detail)}},xa=class r extends Oe{constructor(e=[new J(0,-.5),new J(.5,0),new J(0,.5)],t=12,n=0,i=Math.PI*2){super(),this.type="LatheGeometry",this.parameters={points:e,segments:t,phiStart:n,phiLength:i},t=Math.floor(t),i=He(i,0,Math.PI*2);let s=[],o=[],a=[],l=[],c=[],h=1/t,u=new R,d=new J,f=new R,p=new R,_=new R,g=0,m=0;for(let 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y=_[g],b=y[0]+u,x=y[1]+u,T=y[2]+u;n.push(b,x,T),l+=3}}}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}toJSON(){let e=super.toJSON(),t=this.parameters.shapes;return X0(t,e)}static fromJSON(e,t){let n=[];for(let i=0,s=e.shapes.length;i<s;i++){let o=t[e.shapes[i]];n.push(o)}return new r(n,e.curveSegments)}};function X0(r,e){if(e.shapes=[],Array.isArray(r))for(let t=0,n=r.length;t<n;t++){let i=r[t];e.shapes.push(i.uuid)}else e.shapes.push(r.uuid);return e}var Hr=class r extends Oe{constructor(e=1,t=32,n=16,i=0,s=Math.PI*2,o=0,a=Math.PI){super(),this.type="SphereGeometry",this.parameters={radius:e,widthSegments:t,heightSegments:n,phiStart:i,phiLength:s,thetaStart:o,thetaLength:a},t=Math.max(3,Math.floor(t)),n=Math.max(2,Math.floor(n));let l=Math.min(o+a,Math.PI),c=0,h=[],u=new R,d=new R,f=[],p=[],_=[],g=[];for(let m=0;m<=n;m++){let y=[],b=m/n,x=o+b*a,T=e*Math.cos(x),S=Math.sqrt(e*e-T*T),w=0;m===0&&o===0?w=.5/t:m===n&&l===Math.PI&&(w=-.5/t);for(let v=0;v<=t;v++){let E=v/t,I=i+E*s;u.x=-S*Math.cos(I),u.y=T,u.z=S*Math.sin(I),p.push(u.x,u.y,u.z),d.copy(u).normalize(),_.push(d.x,d.y,d.z),g.push(E+w,1-b),y.push(c++)}h.push(y)}for(let m=0;m<n;m++)for(let y=0;y<t;y++){let b=h[m][y+1],x=h[m][y],T=h[m+1][y],S=h[m+1][y+1];(m!==0||o>0)&&f.push(b,x,S),(m!==n-1||l<Math.PI)&&f.push(x,T,S)}this.setIndex(f),this.setAttribute("position",new fe(p,3)),this.setAttribute("normal",new fe(_,3)),this.setAttribute("uv",new fe(g,2))}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}static fromJSON(e){return new r(e.radius,e.widthSegments,e.heightSegments,e.phiStart,e.phiLength,e.thetaStart,e.thetaLength)}},Ma=class r extends Li{constructor(e=1,t=0){let n=[1,1,1,-1,-1,1,-1,1,-1,1,-1,-1],i=[2,1,0,0,3,2,1,3,0,2,3,1];super(n,i,e,t),this.type="TetrahedronGeometry",this.parameters={radius:e,detail:t}}static fromJSON(e){return new r(e.radius,e.detail)}},Sa=class r extends Oe{constructor(e=1,t=.4,n=12,i=48,s=Math.PI*2,o=0,a=Math.PI*2){super(),this.type="TorusGeometry",this.parameters={radius:e,tube:t,radialSegments:n,tubularSegments:i,arc:s,thetaStart:o,thetaLength:a},n=Math.floor(n),i=Math.floor(i);let l=[],c=[],h=[],u=[],d=new R,f=new R,p=new R;for(let _=0;_<=n;_++){let g=o+_/n*a;for(let m=0;m<=i;m++){let y=m/i*s;f.x=(e+t*Math.cos(g))*Math.cos(y),f.y=(e+t*Math.cos(g))*Math.sin(y),f.z=t*Math.sin(g),c.push(f.x,f.y,f.z),d.x=e*Math.cos(y),d.y=e*Math.sin(y),p.subVectors(f,d).normalize(),h.push(p.x,p.y,p.z),u.push(m/i),u.push(_/n)}}for(let _=1;_<=n;_++)for(let g=1;g<=i;g++){let m=(i+1)*_+g-1,y=(i+1)*(_-1)+g-1,b=(i+1)*(_-1)+g,x=(i+1)*_+g;l.push(m,y,x),l.push(y,b,x)}this.setIndex(l),this.setAttribute("position",new fe(c,3)),this.setAttribute("normal",new fe(h,3)),this.setAttribute("uv",new fe(u,2))}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}static fromJSON(e){return new r(e.radius,e.tube,e.radialSegments,e.tubularSegments,e.arc,e.thetaStart,e.thetaLength)}},ba=class r extends Oe{constructor(e=1,t=.4,n=64,i=8,s=2,o=3){super(),this.type="TorusKnotGeometry",this.parameters={radius:e,tube:t,tubularSegments:n,radialSegments:i,p:s,q:o},n=Math.floor(n),i=Math.floor(i);let a=[],l=[],c=[],h=[],u=new R,d=new R,f=new R,p=new R,_=new R,g=new R,m=new R;for(let b=0;b<=n;++b){let x=b/n*s*Math.PI*2;y(x,s,o,e,f),y(x+.01,s,o,e,p),g.subVectors(p,f),m.addVectors(p,f),_.crossVectors(g,m),m.crossVectors(_,g),_.normalize(),m.normalize();for(let T=0;T<=i;++T){let S=T/i*Math.PI*2,w=-t*Math.cos(S),v=t*Math.sin(S);u.x=f.x+(w*m.x+v*_.x),u.y=f.y+(w*m.y+v*_.y),u.z=f.z+(w*m.z+v*_.z),l.push(u.x,u.y,u.z),d.subVectors(u,f).normalize(),c.push(d.x,d.y,d.z),h.push(b/n),h.push(T/i)}}for(let b=1;b<=n;b++)for(let x=1;x<=i;x++){let T=(i+1)*(b-1)+(x-1),S=(i+1)*b+(x-1),w=(i+1)*b+x,v=(i+1)*(b-1)+x;a.push(T,S,v),a.push(S,w,v)}this.setIndex(a),this.setAttribute("position",new fe(l,3)),this.setAttribute("normal",new fe(c,3)),this.setAttribute("uv",new fe(h,2));function y(b,x,T,S,w){let v=Math.cos(b),E=Math.sin(b),I=T/x*b,P=Math.cos(I);w.x=S*(2+P)*.5*v,w.y=S*(2+P)*E*.5,w.z=S*Math.sin(I)*.5}}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}static fromJSON(e){return new r(e.radius,e.tube,e.tubularSegments,e.radialSegments,e.p,e.q)}},Ta=class r extends Oe{constructor(e=new zr(new R(-1,-1,0),new R(-1,1,0),new R(1,1,0)),t=64,n=1,i=8,s=!1){super(),this.type="TubeGeometry",this.parameters={path:e,tubularSegments:t,radius:n,radialSegments:i,closed:s};let o=e.computeFrenetFrames(t,s);this.tangents=o.tangents,this.normals=o.normals,this.binormals=o.binormals;let a=new R,l=new R,c=new J,h=new R,u=[],d=[],f=[],p=[];_(),this.setIndex(p),this.setAttribute("position",new fe(u,3)),this.setAttribute("normal",new fe(d,3)),this.setAttribute("uv",new fe(f,2));function _(){for(let b=0;b<t;b++)g(b);g(s===!1?t:0),y(),m()}function g(b){h=e.getPointAt(b/t,h);let x=o.normals[b],T=o.binormals[b];for(let S=0;S<=i;S++){let w=S/i*Math.PI*2,v=Math.sin(w),E=-Math.cos(w);l.x=E*x.x+v*T.x,l.y=E*x.y+v*T.y,l.z=E*x.z+v*T.z,l.normalize(),d.push(l.x,l.y,l.z),a.x=h.x+n*l.x,a.y=h.y+n*l.y,a.z=h.z+n*l.z,u.push(a.x,a.y,a.z)}}function m(){for(let b=1;b<=t;b++)for(let x=1;x<=i;x++){let T=(i+1)*(b-1)+(x-1),S=(i+1)*b+(x-1),w=(i+1)*b+x,v=(i+1)*(b-1)+x;p.push(T,S,v),p.push(S,w,v)}}function y(){for(let b=0;b<=t;b++)for(let x=0;x<=i;x++)c.x=b/t,c.y=x/i,f.push(c.x,c.y)}}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}toJSON(){let e=super.toJSON();return e.path=this.parameters.path.toJSON(),e}static fromJSON(e){return new r(new Qc[e.path.type]().fromJSON(e.path),e.tubularSegments,e.radius,e.radialSegments,e.closed)}},Aa=class extends Oe{constructor(e=null){if(super(),this.type="WireframeGeometry",this.parameters={geometry:e},e!==null){let t=[],n=new Set,i=new R,s=new R;if(e.index!==null){let o=e.attributes.position,a=e.index,l=e.groups;l.length===0&&(l=[{start:0,count:a.count,materialIndex:0}]);for(let c=0,h=l.length;c<h;++c){let u=l[c],d=u.start,f=u.count;for(let p=d,_=d+f;p<_;p+=3)for(let g=0;g<3;g++){let m=a.getX(p+g),y=a.getX(p+(g+1)%3);i.fromBufferAttribute(o,m),s.fromBufferAttribute(o,y),Qp(i,s,n)===!0&&(t.push(i.x,i.y,i.z),t.push(s.x,s.y,s.z))}}}else{let o=e.attributes.position;for(let a=0,l=o.count/3;a<l;a++)for(let c=0;c<3;c++){let h=3*a+c,u=3*a+(c+1)%3;i.fromBufferAttribute(o,h),s.fromBufferAttribute(o,u),Qp(i,s,n)===!0&&(t.push(i.x,i.y,i.z),t.push(s.x,s.y,s.z))}}this.setAttribute("position",new fe(t,3))}}copy(e){return super.copy(e),this.parameters=Object.assign({},e.parameters),this}};function Qp(r,e,t){let n=`${r.x},${r.y},${r.z}-${e.x},${e.y},${e.z}`,i=`${e.x},${e.y},${e.z}-${r.x},${r.y},${r.z}`;return t.has(n)===!0||t.has(i)===!0?!1:(t.add(n),t.add(i),!0)}var em=Object.freeze({__proto__:null,BoxGeometry:ui,CapsuleGeometry:sa,CircleGeometry:ra,ConeGeometry:Ur,CylinderGeometry:Dr,DodecahedronGeometry:oa,EdgesGeometry:aa,ExtrudeGeometry:ga,IcosahedronGeometry:_a,LatheGeometry:xa,OctahedronGeometry:Gr,PlaneGeometry:Bs,PolyhedronGeometry:Li,RingGeometry:ya,ShapeGeometry:va,SphereGeometry:Hr,TetrahedronGeometry:Ma,TorusGeometry:Sa,TorusKnotGeometry:ba,TubeGeometry:Ta,WireframeGeometry:Aa}),Ea=class extends vt{constructor(e){super(),this.isShadowMaterial=!0,this.type="ShadowMaterial",this.color=new ce(0),this.transparent=!0,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.fog=e.fog,this}};function $s(r){let e={};for(let t in r){e[t]={};for(let n in r[t]){let i=r[t][n];if(tm(i))i.isRenderTargetTexture?(de("UniformsUtils: Textures of render targets cannot be cloned via cloneUniforms() or mergeUniforms()."),e[t][n]=null):e[t][n]=i.clone();else if(Array.isArray(i))if(tm(i[0])){let s=[];for(let o=0,a=i.length;o<a;o++)s[o]=i[o].clone();e[t][n]=s}else e[t][n]=i.slice();else e[t][n]=i}}return e}function rn(r){let e={};for(let t=0;t<r.length;t++){let n=$s(r[t]);for(let i in n)e[i]=n[i]}return e}function tm(r){return r&&(r.isColor||r.isMatrix3||r.isMatrix4||r.isVector2||r.isVector3||r.isVector4||r.isTexture||r.isQuaternion)}function q0(r){let e=[];for(let t=0;t<r.length;t++)e.push(r[t].clone());return e}function nf(r){let e=r.getRenderTarget();return e===null?r.outputColorSpace:e.isXRRenderTarget===!0?e.texture.colorSpace:Je.workingColorSpace}var sf={clone:$s,merge:rn},Y0=`void main() {
+	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+}`,Z0=`void main() {
+	gl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );
+}`,un=class extends vt{constructor(e){super(),this.isShaderMaterial=!0,this.type="ShaderMaterial",this.defines={},this.uniforms={},this.uniformsGroups=[],this.vertexShader=Y0,this.fragmentShader=Z0,this.linewidth=1,this.wireframe=!1,this.wireframeLinewidth=1,this.fog=!1,this.lights=!1,this.clipping=!1,this.forceSinglePass=!0,this.extensions={clipCullDistance:!1,multiDraw:!1},this.defaultAttributeValues={color:[1,1,1],uv:[0,0],uv1:[0,0]},this.index0AttributeName=void 0,this.uniformsNeedUpdate=!1,this.glslVersion=null,e!==void 0&&this.setValues(e)}copy(e){return super.copy(e),this.fragmentShader=e.fragmentShader,this.vertexShader=e.vertexShader,this.uniforms=$s(e.uniforms),this.uniformsGroups=q0(e.uniformsGroups),this.defines=Object.assign({},e.defines),this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.fog=e.fog,this.lights=e.lights,this.clipping=e.clipping,this.extensions=Object.assign({},e.extensions),this.glslVersion=e.glslVersion,this.defaultAttributeValues=Object.assign({},e.defaultAttributeValues),this.index0AttributeName=e.index0AttributeName,this.uniformsNeedUpdate=e.uniformsNeedUpdate,this}toJSON(e){let t=super.toJSON(e);t.glslVersion=this.glslVersion,t.uniforms={};for(let i in this.uniforms){let o=this.uniforms[i].value;o&&o.isTexture?t.uniforms[i]={type:"t",value:o.toJSON(e).uuid}:o&&o.isColor?t.uniforms[i]={type:"c",value:o.getHex()}:o&&o.isVector2?t.uniforms[i]={type:"v2",value:o.toArray()}:o&&o.isVector3?t.uniforms[i]={type:"v3",value:o.toArray()}:o&&o.isVector4?t.uniforms[i]={type:"v4",value:o.toArray()}:o&&o.isMatrix3?t.uniforms[i]={type:"m3",value:o.toArray()}:o&&o.isMatrix4?t.uniforms[i]={type:"m4",value:o.toArray()}:t.uniforms[i]={value:o}}Object.keys(this.defines).length>0&&(t.defines=this.defines),t.vertexShader=this.vertexShader,t.fragmentShader=this.fragmentShader,t.lights=this.lights,t.clipping=this.clipping;let n={};for(let i in this.extensions)this.extensions[i]===!0&&(n[i]=!0);return Object.keys(n).length>0&&(t.extensions=n),t}fromJSON(e,t){if(super.fromJSON(e,t),e.uniforms!==void 0)for(let n in e.uniforms){let i=e.uniforms[n];switch(this.uniforms[n]={},i.type){case"t":this.uniforms[n].value=t[i.value]||null;break;case"c":this.uniforms[n].value=new ce().setHex(i.value);break;case"v2":this.uniforms[n].value=new J().fromArray(i.value);break;case"v3":this.uniforms[n].value=new R().fromArray(i.value);break;case"v4":this.uniforms[n].value=new mt().fromArray(i.value);break;case"m3":this.uniforms[n].value=new qe().fromArray(i.value);break;case"m4":this.uniforms[n].value=new ze().fromArray(i.value);break;default:this.uniforms[n].value=i.value}}if(e.defines!==void 0&&(this.defines=e.defines),e.vertexShader!==void 0&&(this.vertexShader=e.vertexShader),e.fragmentShader!==void 0&&(this.fragmentShader=e.fragmentShader),e.glslVersion!==void 0&&(this.glslVersion=e.glslVersion),e.extensions!==void 0)for(let n in e.extensions)this.extensions[n]=e.extensions[n];return e.lights!==void 0&&(this.lights=e.lights),e.clipping!==void 0&&(this.clipping=e.clipping),this}},Wr=class extends un{constructor(e){super(e),this.isRawShaderMaterial=!0,this.type="RawShaderMaterial"}},Un=class extends vt{constructor(e){super(),this.isMeshStandardMaterial=!0,this.type="MeshStandardMaterial",this.defines={STANDARD:""},this.color=new ce(16777215),this.roughness=1,this.metalness=0,this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new ce(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=xi,this.normalScale=new J(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.roughnessMap=null,this.metalnessMap=null,this.alphaMap=null,this.envMap=null,this.envMapRotation=new Dn,this.envMapIntensity=1,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.flatShading=!1,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.defines={STANDARD:""},this.color.copy(e.color),this.roughness=e.roughness,this.metalness=e.metalness,this.map=e.map,this.lightMap=e.lightMap,this.lightMapIntensity=e.lightMapIntensity,this.aoMap=e.aoMap,this.aoMapIntensity=e.aoMapIntensity,this.emissive.copy(e.emissive),this.emissiveMap=e.emissiveMap,this.emissiveIntensity=e.emissiveIntensity,this.bumpMap=e.bumpMap,this.bumpScale=e.bumpScale,this.normalMap=e.normalMap,this.normalMapType=e.normalMapType,this.normalScale.copy(e.normalScale),this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.roughnessMap=e.roughnessMap,this.metalnessMap=e.metalnessMap,this.alphaMap=e.alphaMap,this.envMap=e.envMap,this.envMapRotation.copy(e.envMapRotation),this.envMapIntensity=e.envMapIntensity,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.wireframeLinecap=e.wireframeLinecap,this.wireframeLinejoin=e.wireframeLinejoin,this.flatShading=e.flatShading,this.fog=e.fog,this}},sn=class extends Un{constructor(e){super(),this.isMeshPhysicalMaterial=!0,this.defines={STANDARD:"",PHYSICAL:""},this.type="MeshPhysicalMaterial",this.anisotropyRotation=0,this.anisotropyMap=null,this.clearcoatMap=null,this.clearcoatRoughness=0,this.clearcoatRoughnessMap=null,this.clearcoatNormalScale=new J(1,1),this.clearcoatNormalMap=null,this.ior=1.5,Object.defineProperty(this,"reflectivity",{get:function(){return He(2.5*(this.ior-1)/(this.ior+1),0,1)},set:function(t){this.ior=(1+.4*t)/(1-.4*t)}}),this.iridescenceMap=null,this.iridescenceIOR=1.3,this.iridescenceThicknessRange=[100,400],this.iridescenceThicknessMap=null,this.sheenColor=new ce(0),this.sheenColorMap=null,this.sheenRoughness=1,this.sheenRoughnessMap=null,this.transmissionMap=null,this.thickness=0,this.thicknessMap=null,this.attenuationDistance=1/0,this.attenuationColor=new ce(1,1,1),this.specularIntensity=1,this.specularIntensityMap=null,this.specularColor=new ce(1,1,1),this.specularColorMap=null,this._anisotropy=0,this._clearcoat=0,this._dispersion=0,this._iridescence=0,this._retroreflectivity=0,this._sheen=0,this._transmission=0,this.setValues(e)}get anisotropy(){return this._anisotropy}set anisotropy(e){this._anisotropy>0!=e>0&&this.version++,this._anisotropy=e}get clearcoat(){return this._clearcoat}set clearcoat(e){this._clearcoat>0!=e>0&&this.version++,this._clearcoat=e}get iridescence(){return this._iridescence}set iridescence(e){this._iridescence>0!=e>0&&this.version++,this._iridescence=e}get dispersion(){return this._dispersion}set dispersion(e){this._dispersion>0!=e>0&&this.version++,this._dispersion=e}get retroreflectivity(){return this._retroreflectivity}set retroreflectivity(e){this._retroreflectivity>0!=e>0&&this.version++,this._retroreflectivity=e}get sheen(){return this._sheen}set sheen(e){this._sheen>0!=e>0&&this.version++,this._sheen=e}get transmission(){return this._transmission}set transmission(e){this._transmission>0!=e>0&&this.version++,this._transmission=e}copy(e){return super.copy(e),this.defines={STANDARD:"",PHYSICAL:""},this.anisotropy=e.anisotropy,this.anisotropyRotation=e.anisotropyRotation,this.anisotropyMap=e.anisotropyMap,this.clearcoat=e.clearcoat,this.clearcoatMap=e.clearcoatMap,this.clearcoatRoughness=e.clearcoatRoughness,this.clearcoatRoughnessMap=e.clearcoatRoughnessMap,this.clearcoatNormalMap=e.clearcoatNormalMap,this.clearcoatNormalScale.copy(e.clearcoatNormalScale),this.dispersion=e.dispersion,this.ior=e.ior,this.iridescence=e.iridescence,this.iridescenceMap=e.iridescenceMap,this.iridescenceIOR=e.iridescenceIOR,this.iridescenceThicknessRange=[...e.iridescenceThicknessRange],this.iridescenceThicknessMap=e.iridescenceThicknessMap,this.retroreflectivity=e.retroreflectivity,this.sheen=e.sheen,this.sheenColor.copy(e.sheenColor),this.sheenColorMap=e.sheenColorMap,this.sheenRoughness=e.sheenRoughness,this.sheenRoughnessMap=e.sheenRoughnessMap,this.transmission=e.transmission,this.transmissionMap=e.transmissionMap,this.thickness=e.thickness,this.thicknessMap=e.thicknessMap,this.attenuationDistance=e.attenuationDistance,this.attenuationColor.copy(e.attenuationColor),this.specularIntensity=e.specularIntensity,this.specularIntensityMap=e.specularIntensityMap,this.specularColor.copy(e.specularColor),this.specularColorMap=e.specularColorMap,this}},zs=class extends vt{constructor(e){super(),this.isMeshPhongMaterial=!0,this.type="MeshPhongMaterial",this.color=new ce(16777215),this.specular=new ce(1118481),this.shininess=30,this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new ce(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=xi,this.normalScale=new J(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.specularMap=null,this.alphaMap=null,this.envMap=null,this.envMapRotation=new Dn,this.combine=no,this.reflectivity=1,this.envMapIntensity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.flatShading=!1,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.specular.copy(e.specular),this.shininess=e.shininess,this.map=e.map,this.lightMap=e.lightMap,this.lightMapIntensity=e.lightMapIntensity,this.aoMap=e.aoMap,this.aoMapIntensity=e.aoMapIntensity,this.emissive.copy(e.emissive),this.emissiveMap=e.emissiveMap,this.emissiveIntensity=e.emissiveIntensity,this.bumpMap=e.bumpMap,this.bumpScale=e.bumpScale,this.normalMap=e.normalMap,this.normalMapType=e.normalMapType,this.normalScale.copy(e.normalScale),this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.specularMap=e.specularMap,this.alphaMap=e.alphaMap,this.envMap=e.envMap,this.envMapRotation.copy(e.envMapRotation),this.combine=e.combine,this.reflectivity=e.reflectivity,this.envMapIntensity=e.envMapIntensity,this.refractionRatio=e.refractionRatio,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.wireframeLinecap=e.wireframeLinecap,this.wireframeLinejoin=e.wireframeLinejoin,this.flatShading=e.flatShading,this.fog=e.fog,this}},wa=class extends vt{constructor(e){super(),this.isMeshToonMaterial=!0,this.defines={TOON:""},this.type="MeshToonMaterial",this.color=new ce(16777215),this.map=null,this.gradientMap=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new ce(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=xi,this.normalScale=new J(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.alphaMap=null,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.map=e.map,this.gradientMap=e.gradientMap,this.lightMap=e.lightMap,this.lightMapIntensity=e.lightMapIntensity,this.aoMap=e.aoMap,this.aoMapIntensity=e.aoMapIntensity,this.emissive.copy(e.emissive),this.emissiveMap=e.emissiveMap,this.emissiveIntensity=e.emissiveIntensity,this.bumpMap=e.bumpMap,this.bumpScale=e.bumpScale,this.normalMap=e.normalMap,this.normalMapType=e.normalMapType,this.normalScale.copy(e.normalScale),this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.alphaMap=e.alphaMap,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.wireframeLinecap=e.wireframeLinecap,this.wireframeLinejoin=e.wireframeLinejoin,this.fog=e.fog,this}},Ra=class extends vt{constructor(e){super(),this.isMeshNormalMaterial=!0,this.type="MeshNormalMaterial",this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=xi,this.normalScale=new J(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.wireframe=!1,this.wireframeLinewidth=1,this.flatShading=!1,this.setValues(e)}copy(e){return super.copy(e),this.bumpMap=e.bumpMap,this.bumpScale=e.bumpScale,this.normalMap=e.normalMap,this.normalMapType=e.normalMapType,this.normalScale.copy(e.normalScale),this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.flatShading=e.flatShading,this}},ks=class extends vt{constructor(e){super(),this.isMeshLambertMaterial=!0,this.type="MeshLambertMaterial",this.color=new ce(16777215),this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new ce(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=xi,this.normalScale=new J(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.specularMap=null,this.alphaMap=null,this.envMap=null,this.envMapRotation=new Dn,this.combine=no,this.reflectivity=1,this.envMapIntensity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.flatShading=!1,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.color.copy(e.color),this.map=e.map,this.lightMap=e.lightMap,this.lightMapIntensity=e.lightMapIntensity,this.aoMap=e.aoMap,this.aoMapIntensity=e.aoMapIntensity,this.emissive.copy(e.emissive),this.emissiveMap=e.emissiveMap,this.emissiveIntensity=e.emissiveIntensity,this.bumpMap=e.bumpMap,this.bumpScale=e.bumpScale,this.normalMap=e.normalMap,this.normalMapType=e.normalMapType,this.normalScale.copy(e.normalScale),this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.specularMap=e.specularMap,this.alphaMap=e.alphaMap,this.envMap=e.envMap,this.envMapRotation.copy(e.envMapRotation),this.combine=e.combine,this.reflectivity=e.reflectivity,this.envMapIntensity=e.envMapIntensity,this.refractionRatio=e.refractionRatio,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.wireframeLinecap=e.wireframeLinecap,this.wireframeLinejoin=e.wireframeLinejoin,this.flatShading=e.flatShading,this.fog=e.fog,this}},Xr=class extends vt{constructor(e){super(),this.isMeshDepthMaterial=!0,this.type="MeshDepthMaterial",this.depthPacking=Wd,this.map=null,this.alphaMap=null,this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.wireframe=!1,this.wireframeLinewidth=1,this.setValues(e)}copy(e){return super.copy(e),this.depthPacking=e.depthPacking,this.map=e.map,this.alphaMap=e.alphaMap,this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this}},qr=class extends vt{constructor(e){super(),this.isMeshDistanceMaterial=!0,this.type="MeshDistanceMaterial",this.map=null,this.alphaMap=null,this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.setValues(e)}copy(e){return super.copy(e),this.map=e.map,this.alphaMap=e.alphaMap,this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this}},Ca=class extends vt{constructor(e){super(),this.isMeshMatcapMaterial=!0,this.defines={MATCAP:""},this.type="MeshMatcapMaterial",this.color=new ce(16777215),this.matcap=null,this.map=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=xi,this.normalScale=new J(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.alphaMap=null,this.wireframe=!1,this.wireframeLinewidth=1,this.flatShading=!1,this.fog=!0,this.setValues(e)}copy(e){return super.copy(e),this.defines={MATCAP:""},this.color.copy(e.color),this.matcap=e.matcap,this.map=e.map,this.bumpMap=e.bumpMap,this.bumpScale=e.bumpScale,this.normalMap=e.normalMap,this.normalMapType=e.normalMapType,this.normalScale.copy(e.normalScale),this.displacementMap=e.displacementMap,this.displacementScale=e.displacementScale,this.displacementBias=e.displacementBias,this.alphaMap=e.alphaMap,this.wireframe=e.wireframe,this.wireframeLinewidth=e.wireframeLinewidth,this.flatShading=e.flatShading,this.fog=e.fog,this}},Ia=class extends Rt{constructor(e){super(),this.isLineDashedMaterial=!0,this.type="LineDashedMaterial",this.scale=1,this.dashSize=3,this.gapSize=1,this.setValues(e)}copy(e){return super.copy(e),this.scale=e.scale,this.dashSize=e.dashSize,this.gapSize=e.gapSize,this}};function Xn(r,e){return!r||r.constructor===e?r:typeof e.BYTES_PER_ELEMENT=="number"?new e(r):Array.prototype.slice.call(r)}function Vo(r){return r!==void 0&&r.inTangents!==void 0&&r.outTangents!==void 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m=a.createInterpolant(),y=h,b=u-h;m.evaluate(s),_=m.resultBuffer.slice(y,b)}l==="quaternion"&&new wt().fromArray(_).normalize().conjugate().toArray(_);let g=c.times.length;for(let m=0;m<g;++m){let y=m*f+d;if(l==="quaternion")wt.multiplyQuaternionsFlat(c.values,y,_,0,c.values,y);else{let b=f-d*2;for(let x=0;x<b;++x)c.values[y+x]-=_[x]}}}return r.blendMode=iu,r}var eh=class{static convertArray(e,t){return Xn(e,t)}static isTypedArray(e){return dg(e)}static hasTangents(e){return Vo(e)}static getKeyframeOrder(e){return Tg(e)}static sortedArray(e,t,n){return cd(e,t,n)}static flattenJSON(e,t,n,i){Ag(e,t,n,i)}static subclip(e,t,n,i,s=30){return K0(e,t,n,i,s)}static makeClipAdditive(e,t=0,n=e,i=30){return J0(e,t,n,i)}},$n=class{constructor(e,t,n,i){this.parameterPositions=e,this._cachedIndex=0,this.resultBuffer=i!==void 0?i:new t.constructor(n),this.sampleValues=t,this.valueSize=n,this.settings=null,this.DefaultSettings_={}}evaluate(e){let t=this.parameterPositions,n=this._cachedIndex,i=t[n],s=t[n-1];e:{t:{let o;n:{i:if(!(e<i)){for(let a=n+2;;){if(i===void 0){if(e<s)break i;return n=t.length,this._cachedIndex=n,this.copySampleValue_(n-1)}if(n===a)break;if(s=i,i=t[++n],e<i)break t}o=t.length;break n}if(!(e>=s)){let a=t[1];e<a&&(n=2,s=a);for(let l=n-2;;){if(s===void 0)return this._cachedIndex=0,this.copySampleValue_(0);if(n===l)break;if(i=s,s=t[--n-1],e>=s)break t}o=n,n=0;break n}break e}for(;n<o;){let a=n+o>>>1;e<t[a]?o=a:n=a+1}if(i=t[n],s=t[n-1],s===void 0)return this._cachedIndex=0,this.copySampleValue_(0);if(i===void 0)return n=t.length,this._cachedIndex=n,this.copySampleValue_(n-1)}this._cachedIndex=n,this.intervalChanged_(n,s,i)}return this.interpolate_(n,s,e,i)}getSettings_(){return this.settings||this.DefaultSettings_}copySampleValue_(e){let t=this.resultBuffer,n=this.sampleValues,i=this.valueSize,s=e*i;for(let o=0;o!==i;++o)t[o]=n[s+o];return t}interpolate_(){throw new Error("THREE.Interpolant: Call to abstract 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s=(r-e)/(i-e);for(let o=0;o<8;o++){let a=Eg(s,e,t,n,i)-r;if(Math.abs(a)<1e-10)break;let l=j0(s,e,t,n,i);if(Math.abs(l)<1e-10)break;s=Math.max(0,Math.min(1,s-a/l))}return s}var dn=class{constructor(e,t,n,i){if(e===void 0)throw new Error("THREE.KeyframeTrack: track name is undefined");if(t===void 0||t.length===0)throw new Error("THREE.KeyframeTrack: no keyframes in track named "+e);this.name=e,this.times=Xn(t,this.TimeBufferType),this.values=Xn(n,this.ValueBufferType),this.setInterpolation(i||this.DefaultInterpolation)}static toJSON(e){let t=e.constructor,n;if(t.toJSON!==this.toJSON)n=t.toJSON(e);else{n={name:e.name,times:Xn(e.times,Array),values:Xn(e.values,Array)};let i=e.getInterpolation();i!==e.DefaultInterpolation&&(n.interpolation=i),Vo(e.settings)&&(n.settings={inTangents:Xn(e.settings.inTangents,Array),outTangents:Xn(e.settings.outTangents,Array)})}return n.type=e.ValueTypeName,n}InterpolantFactoryMethodDiscrete(e){return new La(this.times,this.values,this.getValueSize(),e)}InterpolantFactoryMethodLinear(e){return new Yr(this.times,this.values,this.getValueSize(),e)}InterpolantFactoryMethodSmooth(e){return new Pa(this.times,this.values,this.getValueSize(),e)}InterpolantFactoryMethodBezier(e){let t=new Na(this.times,this.values,this.getValueSize(),e);return this.settings&&(t.inTangents=this.settings.inTangents,t.outTangents=this.settings.outTangents),t}setInterpolation(e){let t;switch(e){case Qi:t=this.InterpolantFactoryMethodDiscrete;break;case es:t=this.InterpolantFactoryMethodLinear;break;case Fo:t=this.InterpolantFactoryMethodSmooth;break;case Dc:t=this.InterpolantFactoryMethodBezier;break}if(t===void 0){let n="unsupported interpolation for "+this.ValueTypeName+" keyframe track named "+this.name;if(this.createInterpolant===void 0)if(e!==this.DefaultInterpolation)this.setInterpolation(this.DefaultInterpolation);else throw new Error(n);return de("KeyframeTrack:",n),this}return this.createInterpolant=t,this}getInterpolation(){switch(this.createInterpolant){case this.InterpolantFactoryMethodDiscrete:return Qi;case this.InterpolantFactoryMethodLinear:return es;case this.InterpolantFactoryMethodSmooth:return Fo;case this.InterpolantFactoryMethodBezier:return Dc}}getValueSize(){return this.values.length/this.times.length}shift(e){if(e!==0){let t=this.times;for(let n=0,i=t.length;n!==i;++n)t[n]+=e}return this}scale(e){if(e!==1){let t=this.times;for(let n=0,i=t.length;n!==i;++n)t[n]*=e;Vo(this.settings)&&(nm(this.settings.inTangents,e),nm(this.settings.outTangents,e))}return this}trim(e,t){let n=this.times,i=n.length,s=0,o=i-1;for(;s!==i&&n[s]<e;)++s;for(;o!==-1&&n[o]>t;)--o;if(++o,s!==0||o!==i){s>=o&&(o=Math.max(o,1),s=o-1);let a=this.getValueSize();this.times=n.slice(s,o),this.values=this.values.slice(s*a,o*a)}return this}validate(){let e=!0,t=this.getValueSize();t-Math.floor(t)!==0&&(Pe("KeyframeTrack: Invalid value size in track.",this),e=!1);let n=this.times,i=this.values,s=n.length;s===0&&(Pe("KeyframeTrack: Track is empty.",this),e=!1);let o=null;for(let a=0;a!==s;a++){let l=n[a];if(typeof l=="number"&&isNaN(l)){Pe("KeyframeTrack: Time is not a valid number.",this,a,l),e=!1;break}if(o!==null&&o>l){Pe("KeyframeTrack: Out of order keys.",this,a,l,o),e=!1;break}o=l}if(i!==void 0&&dg(i))for(let a=0,l=i.length;a!==l;++a){let c=i[a];if(isNaN(c)){Pe("KeyframeTrack: Value is not a valid number.",this,a,c),e=!1;break}}return e}optimize(){let e=this.times.slice(),t=this.values.slice(),n=this.getValueSize(),i=this.getInterpolation()===Fo,s=e.length-1,o=1;for(let a=1;a<s;++a){let l=!1,c=e[a],h=e[a+1];if(c!==h&&(a!==1||c!==e[0]))if(i)l=!0;else{let u=a*n,d=u-n,f=u+n;for(let p=0;p!==n;++p){let _=t[u+p];if(_!==t[d+p]||_!==t[f+p]){l=!0;break}}}if(l){if(a!==o){e[o]=e[a];let u=a*n,d=o*n;for(let f=0;f!==n;++f)t[d+f]=t[u+f]}++o}}if(s>0){e[o]=e[s];for(let a=s*n,l=o*n,c=0;c!==n;++c)t[l+c]=t[a+c];++o}return o!==e.length?(this.times=e.slice(0,o),this.values=t.slice(0,o*n)):(this.times=e,this.values=t),this}clone(){let e=this.times.slice(),t=this.values.slice(),n=this.constructor,i=new n(this.name,e,t);return i.createInterpolant=this.createInterpolant,Vo(this.settings)&&(i.settings={inTangents:this.settings.inTangents.slice(),outTangents:this.settings.outTangents.slice()}),i}};function nm(r,e){for(let t=0,n=r.length;t!==n;t+=2)r[t]*=e}dn.prototype.ValueTypeName="";dn.prototype.TimeBufferType=Float32Array;dn.prototype.ValueBufferType=Float32Array;dn.prototype.DefaultInterpolation=es;var di=class extends dn{constructor(e,t,n){super(e,t,n)}};di.prototype.ValueTypeName="bool";di.prototype.ValueBufferType=Array;di.prototype.DefaultInterpolation=Qi;di.prototype.InterpolantFactoryMethodLinear=void 0;di.prototype.InterpolantFactoryMethodSmooth=void 0;var Zr=class extends dn{constructor(e,t,n,i){super(e,t,n,i)}};Zr.prototype.ValueTypeName="color";var fi=class extends 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this.constructor(this.name,this.duration,e,this.blendMode);return t.userData=JSON.parse(JSON.stringify(this.userData)),t}toJSON(){return this.constructor.toJSON(this)}};function Q0(r){switch(r.toLowerCase()){case"scalar":case"double":case"float":case"number":case"integer":return fi;case"vector":case"vector2":case"vector3":case"vector4":return Ni;case"color":return Zr;case"quaternion":return pi;case"bool":case"boolean":return di;case"string":return mi}throw new Error("THREE.KeyframeTrack: Unsupported typeName: "+r)}function ex(r){if(r.type===void 0)throw new Error("THREE.KeyframeTrack: track type undefined, can not parse");let e=Q0(r.type);if(r.times===void 0){let n=[],i=[];Ag(r.keys,n,i,"value"),r.times=n,r.values=i}let t;return e.parse!==void 0?t=e.parse(r):t=new e(r.name,r.times,r.values,r.interpolation),Vo(r.settings)&&(t.settings={inTangents:Xn(r.settings.inTangents,Float32Array),outTangents:Xn(r.settings.outTangents,Float32Array)}),t}var 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super.copy(e,t),this.left=e.left,this.right=e.right,this.top=e.top,this.bottom=e.bottom,this.near=e.near,this.far=e.far,this.zoom=e.zoom,this.view=e.view===null?null:Object.assign({},e.view),this}setViewOffset(e,t,n,i,s,o){this.view===null&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1}),this.view.enabled=!0,this.view.fullWidth=e,this.view.fullHeight=t,this.view.offsetX=n,this.view.offsetY=i,this.view.width=s,this.view.height=o,this.updateProjectionMatrix()}clearViewOffset(){this.view!==null&&(this.view.enabled=!1),this.updateProjectionMatrix()}updateProjectionMatrix(){let e=(this.right-this.left)/(2*this.zoom),t=(this.top-this.bottom)/(2*this.zoom),n=(this.right+this.left)/2,i=(this.top+this.bottom)/2,s=n-e,o=n+e,a=i+t,l=i-t;if(this.view!==null&&this.view.enabled){let c=(this.right-this.left)/this.view.fullWidth/this.zoom,h=(this.top-this.bottom)/this.view.fullHeight/this.zoom;s+=c*this.view.offsetX,o=s+c*this.view.width,a-=h*this.view.offsetY,l=a-h*this.view.height}this.projectionMatrix.makeOrthographic(s,o,a,l,this.near,this.far,this.coordinateSystem,this.reversedDepth),this.projectionMatrixInverse.copy(this.projectionMatrix).invert()}toJSON(e){let t=super.toJSON(e);return t.object.zoom=this.zoom,t.object.left=this.left,t.object.right=this.right,t.object.top=this.top,t.object.bottom=this.bottom,t.object.near=this.near,t.object.far=this.far,this.view!==null&&(t.object.view=Object.assign({},this.view)),t}},fd=class extends Vs{constructor(){super(new _i(-5,5,5,-5,.5,500)),this.isDirectionalLightShadow=!0}},Ws=class extends Qn{constructor(e,t){super(e,t),this.isDirectionalLight=!0,this.type="DirectionalLight",this.position.copy(st.DEFAULT_UP),this.updateMatrix(),this.target=new st,this.shadow=new fd}dispose(){super.dispose(),this.shadow.dispose()}copy(e){return super.copy(e),this.target=e.target.clone(),this.shadow=e.shadow.clone(),this}toJSON(e){let t=super.toJSON(e);return t.object.shadow=this.shadow.toJSON(),t.object.target=this.target.uuid,t}},Fa=class extends Qn{constructor(e,t){super(e,t),this.isAmbientLight=!0,this.type="AmbientLight"}},Oa=class extends Qn{constructor(e,t,n=10,i=10){super(e,t),this.isRectAreaLight=!0,this.type="RectAreaLight",this.width=n,this.height=i}get power(){return this.intensity*this.width*this.height*Math.PI}set power(e){this.intensity=e/(this.width*this.height*Math.PI)}copy(e){return super.copy(e),this.width=e.width,this.height=e.height,this}toJSON(e){let t=super.toJSON(e);return t.object.width=this.width,t.object.height=this.height,t}},jr=class{constructor(){this.isSphericalHarmonics3=!0,this.coefficients=[];for(let e=0;e<9;e++)this.coefficients.push(new R)}set(e){for(let t=0;t<9;t++)this.coefficients[t].copy(e[t]);return this}zero(){for(let e=0;e<9;e++)this.coefficients[e].set(0,0,0);return this}getAt(e,t){let n=e.x,i=e.y,s=e.z,o=this.coefficients;return t.copy(o[0]).multiplyScalar(.282095),t.addScaledVector(o[1],.488603*i),t.addScaledVector(o[2],.488603*s),t.addScaledVector(o[3],.488603*n),t.addScaledVector(o[4],1.092548*(n*i)),t.addScaledVector(o[5],1.092548*(i*s)),t.addScaledVector(o[6],.315392*(3*s*s-1)),t.addScaledVector(o[7],1.092548*(n*s)),t.addScaledVector(o[8],.546274*(n*n-i*i)),t}getIrradianceAt(e,t){let n=e.x,i=e.y,s=e.z,o=this.coefficients;return t.copy(o[0]).multiplyScalar(.886227),t.addScaledVector(o[1],2*.511664*i),t.addScaledVector(o[2],2*.511664*s),t.addScaledVector(o[3],2*.511664*n),t.addScaledVector(o[4],2*.429043*n*i),t.addScaledVector(o[5],2*.429043*i*s),t.addScaledVector(o[6],.743125*s*s-.247708),t.addScaledVector(o[7],2*.429043*n*s),t.addScaledVector(o[8],.429043*(n*n-i*i)),t}add(e){for(let t=0;t<9;t++)this.coefficients[t].add(e.coefficients[t]);return this}addScaledSH(e,t){for(let n=0;n<9;n++)this.coefficients[n].addScaledVector(e.coefficients[n],t);return this}scale(e){for(let t=0;t<9;t++)this.coefficients[t].multiplyScalar(e);return this}lerp(e,t){for(let n=0;n<9;n++)this.coefficients[n].lerp(e.coefficients[n],t);return this}equals(e){for(let t=0;t<9;t++)if(!this.coefficients[t].equals(e.coefficients[t]))return!1;return!0}copy(e){return this.set(e.coefficients)}clone(){return new this.constructor().copy(this)}fromArray(e,t=0){let n=this.coefficients;for(let i=0;i<9;i++)n[i].fromArray(e,t+i*3);return this}toArray(e=[],t=0){let n=this.coefficients;for(let i=0;i<9;i++)n[i].toArray(e,t+i*3);return e}static getBasisAt(e,t){let n=e.x,i=e.y,s=e.z;t[0]=.282095,t[1]=.488603*i,t[2]=.488603*s,t[3]=.488603*n,t[4]=1.092548*n*i,t[5]=1.092548*i*s,t[6]=.315392*(3*s*s-1),t[7]=1.092548*n*s,t[8]=.546274*(n*n-i*i)}},Ba=class extends Qn{constructor(e=new jr,t=1){super(void 0,t),this.isLightProbe=!0,this.sh=e}copy(e){return super.copy(e),this.sh.copy(e.sh),this}toJSON(e){let t=super.toJSON(e);return t.object.sh=this.sh.toArray(),t}},lm={},za=class r extends It{constructor(e){super(e),this.textures={}}load(e,t,n,i){let s=this,o=new kt(s.manager);o.setPath(s.path),o.setRequestHeader(s.requestHeader),o.setWithCredentials(s.withCredentials),o.load(e,function(a){try{t(s.parse(JSON.parse(a)))}catch(l){i?i(l):Pe(l),s.manager.itemError(e)}},n,i)}parse(e){let t=this.createMaterialFromType(e.type);return t.fromJSON(e,this.textures),t}setTextures(e){return this.textures=e,this}createMaterialFromType(e){return r.createMaterialFromType(e)}static createMaterialFromType(e){let n={ShadowMaterial:Ea,SpriteMaterial:Lr,RawShaderMaterial:Wr,ShaderMaterial:un,PointsMaterial:wn,MeshPhysicalMaterial:sn,MeshStandardMaterial:Un,MeshPhongMaterial:zs,MeshToonMaterial:wa,MeshNormalMaterial:Ra,MeshLambertMaterial:ks,MeshDepthMaterial:Xr,MeshDistanceMaterial:qr,MeshBasicMaterial:Kt,MeshMatcapMaterial:Ca,LineDashedMaterial:Ia,LineBasicMaterial:Rt,Material:vt,...lm}[e],i;return n===void 0?(ai(`MaterialLoader: Unknown material type "${e}". Use .registerMaterial() before starting the deserialization process.`),i=new vt):i=new n,i}static registerMaterial(e,t){lm[e]=t}},Fn=class{static extractUrlBase(e){let t=e.lastIndexOf("/");return t===-1?"./":e.slice(0,t+1)}static resolveURL(e,t){return typeof e!="string"||e===""?"":(/^https?:\/\//i.test(t)&&/^\//.test(e)&&(t=t.replace(/(^https?:\/\/[^\/]+).*/i,"$1")),/^(https?:)?\/\//i.test(e)||/^data:.*,.*$/i.test(e)||/^blob:.*$/i.test(e)?e:t+e)}},ka=class extends Oe{constructor(){super(),this.isInstancedBufferGeometry=!0,this.type="InstancedBufferGeometry",this.instanceCount=1/0}copy(e){return super.copy(e),this.instanceCount=e.instanceCount,this}toJSON(){let e=super.toJSON();return e.instanceCount=this.instanceCount,e.isInstancedBufferGeometry=!0,e}},Va=class extends It{constructor(e){super(e)}load(e,t,n,i){let s=this,o=new kt(s.manager);o.setPath(s.path),o.setRequestHeader(s.requestHeader),o.setWithCredentials(s.withCredentials),o.load(e,function(a){try{t(s.parse(JSON.parse(a)))}catch(l){i?i(l):Pe(l),s.manager.itemError(e)}},n,i)}parse(e){let t={},n={};function i(f,p){if(t[p]!==void 0)return t[p];let g=f.interleavedBuffers[p],m=s(f,g.buffer),y=br(g.type,m),b=new ci(y,g.stride);return b.uuid=g.uuid,g.usage!==void 0&&b.setUsage(g.usage),t[p]=b,b}function s(f,p){if(n[p]!==void 0)return n[p];let g=f.arrayBuffers[p],m=new Uint32Array(g).buffer;return n[p]=m,m}let o=e.isInstancedBufferGeometry?new ka:new Oe,a=e.data.index;if(a!==void 0){let f=br(a.type,a.array);o.setIndex(new Qe(f,1))}let l=e.data.attributes;for(let f in l){let p=l[f],_;if(p.isInterleavedBufferAttribute){let g=i(e.data,p.data);_=new Kn(g,p.itemSize,p.offset,p.normalized)}else{let g=br(p.type,p.array),m=p.isInstancedBufferAttribute?An:Qe;_=new m(g,p.itemSize,p.normalized)}p.name!==void 0&&(_.name=p.name),p.usage!==void 0&&_.setUsage(p.usage),p.gpuType!==void 0&&(_.gpuType=p.gpuType),o.setAttribute(f,_)}let c=e.data.morphAttributes;if(c)for(let f in c){let p=c[f],_=[];for(let g=0,m=p.length;g<m;g++){let y=p[g],b;if(y.isInterleavedBufferAttribute){let x=i(e.data,y.data);b=new Kn(x,y.itemSize,y.offset,y.normalized)}else{let x=br(y.type,y.array);b=new Qe(x,y.itemSize,y.normalized)}y.name!==void 0&&(b.name=y.name),y.usage!==void 0&&b.setUsage(y.usage),y.gpuType!==void 0&&(b.gpuType=y.gpuType),_.push(b)}o.morphAttributes[f]=_}e.data.morphTargetsRelative&&(o.morphTargetsRelative=!0);let u=e.data.groups||e.data.drawcalls||e.data.offsets;if(u!==void 0)for(let f=0,p=u.length;f!==p;++f){let _=u[f];o.addGroup(_.start,_.count,_.materialIndex)}let d=e.data.boundingSphere;return d!==void 0&&(o.boundingSphere=new Nt().fromJSON(d)),e.name&&(o.name=e.name),e.userData&&(o.userData=e.userData),o}},$u={},rh=class extends It{constructor(e){super(e)}load(e,t,n,i){let s=this,o=this.path===""?Fn.extractUrlBase(e):this.path;this.resourcePath=this.resourcePath||o;let a=new kt(this.manager);a.setPath(this.path),a.setRequestHeader(this.requestHeader),a.setWithCredentials(this.withCredentials),a.load(e,function(l){let c=null;try{c=JSON.parse(l)}catch(u){i!==void 0&&i(u),Pe("ObjectLoader: Can't parse "+e+".",u.message);return}let h=c.metadata;if(h===void 0||h.type===void 0||h.type.toLowerCase()==="geometry"){i!==void 0&&i(new Error("THREE.ObjectLoader: Can't load "+e)),Pe("ObjectLoader: Can't load "+e);return}s.parse(c,t)},n,i)}async loadAsync(e,t){let n=this,i=this.path===""?Fn.extractUrlBase(e):this.path;this.resourcePath=this.resourcePath||i;let s=new kt(this.manager);s.setPath(this.path),s.setRequestHeader(this.requestHeader),s.setWithCredentials(this.withCredentials);let o=await s.loadAsync(e,t),a;try{a=JSON.parse(o)}catch(c){throw new Error("THREE.ObjectLoader: Can't parse "+e+". "+c.message)}let l=a.metadata;if(l===void 0||l.type===void 0||l.type.toLowerCase()==="geometry")throw new Error("THREE.ObjectLoader: Can't load "+e);return await n.parseAsync(a)}parse(e,t){let n=this.parseAnimations(e.animations),i=this.parseShapes(e.shapes),s=this.parseGeometries(e.geometries,i),o=this.parseImages(e.images,function(){t!==void 0&&t(c)}),a=this.parseTextures(e.textures,o),l=this.parseMaterials(e.materials,a),c=this.parseObject(e.object,s,l,a,n),h=this.parseSkeletons(e.skeletons,c);if(this.bindSkeletons(c,h),this.bindLightTargets(c),t!==void 0){let u=!1;for(let d in o)if(o[d].data instanceof HTMLImageElement){u=!0;break}u===!1&&t(c)}return c}async parseAsync(e){let t=this.parseAnimations(e.animations),n=this.parseShapes(e.shapes),i=this.parseGeometries(e.geometries,n),s=await this.parseImagesAsync(e.images),o=this.parseTextures(e.textures,s),a=this.parseMaterials(e.materials,o),l=this.parseObject(e.object,i,a,o,t),c=this.parseSkeletons(e.skeletons,l);return this.bindSkeletons(l,c),this.bindLightTargets(l),l}static registerGeometry(e,t){$u[e]=t}parseShapes(e){let t={};if(e!==void 0)for(let n=0,i=e.length;n<i;n++){let s=new os().fromJSON(e[n]);t[s.uuid]=s}return t}parseSkeletons(e,t){let n={},i={};if(t.traverse(function(s){s.isBone&&(i[s.uuid]=s)}),e!==void 0)for(let s=0,o=e.length;s<o;s++){let a=new Ns().fromJSON(e[s],i);n[a.uuid]=a}return n}parseGeometries(e,t){let n={};if(e!==void 0){let i=new Va;for(let s=0,o=e.length;s<o;s++){let a,l=e[s];switch(l.type){case"BufferGeometry":case"InstancedBufferGeometry":a=i.parse(l);break;default:l.type in em?a=em[l.type].fromJSON(l,t):l.type in $u?a=$u[l.type].fromJSON(l,t):de(`ObjectLoader: Unknown geometry type "${l.type}". Use .registerGeometry() before starting the deserialization process.`)}a.uuid=l.uuid,l.name!==void 0&&(a.name=l.name),l.userData!==void 0&&(a.userData=l.userData),n[l.uuid]=a}}return n}parseMaterials(e,t){let n={},i={};if(e!==void 0){let s=new za;s.setTextures(t);for(let o=0,a=e.length;o<a;o++){let l=e[o];n[l.uuid]===void 0&&(n[l.uuid]=s.parse(l)),i[l.uuid]=n[l.uuid]}}return i}parseAnimations(e){let t={};if(e!==void 0)for(let n=0;n<e.length;n++){let i=e[n],s=gi.parse(i);t[s.uuid]=s}return t}parseImages(e,t){let n=this,i={},s;function o(l){return l=n.manager.resolveURL(l),n.manager.itemStart(l),s.load(l,function(){n.manager.itemEnd(l)},void 0,function(){n.manager.itemError(l),n.manager.itemEnd(l)})}function a(l){if(typeof l=="string"){let c=l,h=/^(\/\/)|([a-z]+:(\/\/)?)/i.test(c)?c:n.resourcePath+c;return o(h)}else return l.data?{data:br(l.type,l.data),width:l.width,height:l.height}:null}if(e!==void 0&&e.length>0){let l=new Kr(t);s=new as(l),s.setCrossOrigin(this.crossOrigin);for(let c=0,h=e.length;c<h;c++){let u=e[c],d=u.url;if(Array.isArray(d)){let f=[];for(let p=0,_=d.length;p<_;p++){let g=d[p],m=a(g);m!==null&&(m instanceof HTMLImageElement?f.push(m):f.push(new hn(m.data,m.width,m.height)))}i[u.uuid]=new Ln(f)}else{let f=a(u.url);i[u.uuid]=new Ln(f)}}}return i}async parseImagesAsync(e){let t=this,n={},i;async function s(o){if(typeof o=="string"){let a=o,l=/^(\/\/)|([a-z]+:(\/\/)?)/i.test(a)?a:t.resourcePath+a;return await i.loadAsync(l)}else return o.data?{data:br(o.type,o.data),width:o.width,height:o.height}:null}if(e!==void 0&&e.length>0){i=new as(this.manager),i.setCrossOrigin(this.crossOrigin);for(let o=0,a=e.length;o<a;o++){let l=e[o],c=l.url;if(Array.isArray(c)){let h=[];for(let u=0,d=c.length;u<d;u++){let f=c[u],p=await s(f);p!==null&&(p instanceof HTMLImageElement?h.push(p):h.push(new hn(p.data,p.width,p.height)))}n[l.uuid]=new Ln(h)}else{let h=await s(l.url);n[l.uuid]=new Ln(h)}}}return n}parseTextures(e,t){function n(s,o){return typeof s=="number"?s:(de("ObjectLoader.parseTexture: Constant should be in numeric form.",s),o[s])}let i={};if(e!==void 0)for(let s=0,o=e.length;s<o;s++){let a=e[s];a.image===void 0&&de('ObjectLoader: No "image" specified for',a.uuid),t[a.image]===void 0&&de("ObjectLoader: Undefined image",a.image);let l=t[a.image],c=l.data,h;Array.isArray(c)?(h=new ss,c.length===6&&(h.needsUpdate=!0)):(c&&c.data?h=new hn:h=new Et,c&&(h.needsUpdate=!0)),h.source=l,h.uuid=a.uuid,a.name!==void 0&&(h.name=a.name),a.mapping!==void 0&&(h.mapping=n(a.mapping,tx)),a.channel!==void 0&&(h.channel=a.channel),a.offset!==void 0&&h.offset.fromArray(a.offset),a.repeat!==void 0&&h.repeat.fromArray(a.repeat),a.center!==void 0&&h.center.fromArray(a.center),a.rotation!==void 0&&(h.rotation=a.rotation),a.wrap!==void 0&&(h.wrapS=n(a.wrap[0],cm),h.wrapT=n(a.wrap[1],cm)),a.format!==void 0&&(h.format=a.format),a.internalFormat!==void 0&&(h.internalFormat=a.internalFormat),a.type!==void 0&&(h.type=a.type),a.colorSpace!==void 0&&(h.colorSpace=a.colorSpace),a.minFilter!==void 0&&(h.minFilter=n(a.minFilter,hm)),a.magFilter!==void 0&&(h.magFilter=n(a.magFilter,hm)),a.anisotropy!==void 0&&(h.anisotropy=a.anisotropy),a.flipY!==void 0&&(h.flipY=a.flipY),a.generateMipmaps!==void 0&&(h.generateMipmaps=a.generateMipmaps),a.premultiplyAlpha!==void 0&&(h.premultiplyAlpha=a.premultiplyAlpha),a.unpackAlignment!==void 0&&(h.unpackAlignment=a.unpackAlignment),a.compareFunction!==void 0&&(h.compareFunction=a.compareFunction),a.normalized!==void 0&&(h.normalized=a.normalized),a.userData!==void 0&&(h.userData=a.userData),i[a.uuid]=h}return i}parseObject(e,t,n,i,s){let o;function a(d){return t[d]===void 0&&de("ObjectLoader: Undefined geometry",d),t[d]}function l(d){if(d!==void 0){if(Array.isArray(d)){let f=[];for(let p=0,_=d.length;p<_;p++){let g=d[p];n[g]===void 0&&de("ObjectLoader: Undefined material",g),f.push(n[g])}return f}return n[d]===void 0&&de("ObjectLoader: Undefined material",d),n[d]}}function c(d){return i[d]===void 0&&de("ObjectLoader: Undefined texture",d),i[d]}let h,u;switch(e.type){case"Scene":o=new Ps,e.background!==void 0&&(Number.isInteger(e.background)?o.background=new ce(e.background):o.background=c(e.background)),e.environment!==void 0&&(o.environment=c(e.environment)),e.fog!==void 0&&(e.fog.type==="Fog"?o.fog=new jo(e.fog.color,e.fog.near,e.fog.far):e.fog.type==="FogExp2"&&(o.fog=new Jo(e.fog.color,e.fog.density)),e.fog.name!==""&&(o.fog.name=e.fog.name)),e.backgroundBlurriness!==void 0&&(o.backgroundBlurriness=e.backgroundBlurriness),e.backgroundIntensity!==void 0&&(o.backgroundIntensity=e.backgroundIntensity),e.backgroundRotation!==void 0&&o.backgroundRotation.fromArray(e.backgroundRotation),e.environmentIntensity!==void 0&&(o.environmentIntensity=e.environmentIntensity),e.environmentRotation!==void 0&&o.environmentRotation.fromArray(e.environmentRotation);break;case"PerspectiveCamera":o=new Lt(e.fov,e.aspect,e.near,e.far),e.focus!==void 0&&(o.focus=e.focus),e.zoom!==void 0&&(o.zoom=e.zoom),e.filmGauge!==void 0&&(o.filmGauge=e.filmGauge),e.filmOffset!==void 0&&(o.filmOffset=e.filmOffset),e.view!==void 0&&(o.view=Object.assign({},e.view));break;case"OrthographicCamera":o=new _i(e.left,e.right,e.top,e.bottom,e.near,e.far),e.zoom!==void 0&&(o.zoom=e.zoom),e.view!==void 0&&(o.view=Object.assign({},e.view));break;case"AmbientLight":o=new Fa(e.color,e.intensity);break;case"DirectionalLight":o=new Ws(e.color,e.intensity),o.target=e.target||"";break;case"PointLight":o=new Di(e.color,e.intensity,e.distance,e.decay);break;case"RectAreaLight":o=new Oa(e.color,e.intensity,e.width,e.height);break;case"SpotLight":o=new Hs(e.color,e.intensity,e.distance,e.angle,e.penumbra,e.decay),o.target=e.target||"";break;case"HemisphereLight":o=new Ua(e.color,e.groundColor,e.intensity);break;case"LightProbe":let d=new jr().fromArray(e.sh);o=new Ba(d,e.intensity);break;case"SkinnedMesh":h=a(e.geometry),u=l(e.material),o=new Ls(h,u),e.bindMode!==void 0&&(o.bindMode=e.bindMode),e.bindMatrix!==void 0&&o.bindMatrix.fromArray(e.bindMatrix),e.skeleton!==void 0&&(o.skeleton=e.skeleton);break;case"Mesh":h=a(e.geometry),u=l(e.material),o=new rt(h,u);break;case"InstancedMesh":h=a(e.geometry),u=l(e.material);let f=e.count,p=e.instanceMatrix,_=e.instanceColor;o=new Ii(h,u,f),o.instanceMatrix=new An(new Float32Array(p.array),16),_!==void 0&&(o.instanceColor=new An(new Float32Array(_.array),_.itemSize));break;case"BatchedMesh":h=a(e.geometry),u=l(e.material),o=new ta(e.maxInstanceCount,e.maxVertexCount,e.maxIndexCount,u),o.geometry=h,o.perObjectFrustumCulled=e.perObjectFrustumCulled,o.sortObjects=e.sortObjects,o._drawRanges=e.drawRanges,o._reservedRanges=e.reservedRanges,o._geometryInfo=e.geometryInfo.map(g=>{let m=null,y=null;return g.boundingBox!==void 0&&(m=new Ft().fromJSON(g.boundingBox)),g.boundingSphere!==void 0&&(y=new Nt().fromJSON(g.boundingSphere)),{...g,boundingBox:m,boundingSphere:y}}),o._instanceInfo=e.instanceInfo,o._availableInstanceIds=e._availableInstanceIds,o._availableGeometryIds=e._availableGeometryIds,o._nextIndexStart=e.nextIndexStart,o._nextVertexStart=e.nextVertexStart,o._geometryCount=e.geometryCount,o._maxInstanceCount=e.maxInstanceCount,o._maxVertexCount=e.maxVertexCount,o._maxIndexCount=e.maxIndexCount,o._geometryInitialized=e.geometryInitialized,o._matricesTexture=c(e.matricesTexture.uuid),o._indirectTexture=c(e.indirectTexture.uuid),e.colorsTexture!==void 0&&(o._colorsTexture=c(e.colorsTexture.uuid)),e.boundingSphere!==void 0&&(o.boundingSphere=new Nt().fromJSON(e.boundingSphere)),e.boundingBox!==void 0&&(o.boundingBox=new Ft().fromJSON(e.boundingBox));break;case"LOD":o=new Qo;break;case"Line":o=new En(a(e.geometry),l(e.material));break;case"LineLoop":o=new Ds(a(e.geometry),l(e.material));break;case"LineSegments":o=new Xt(a(e.geometry),l(e.material));break;case"PointCloud":case"Points":o=new jn(a(e.geometry),l(e.material));break;case"Sprite":o=new $o(l(e.material));break;case"Group":o=new cn;break;case"Bone":o=new is;break;default:o=new st}if(o.uuid=e.uuid,e.name!==void 0&&(o.name=e.name),e.matrix!==void 0?(o.matrix.fromArray(e.matrix),e.matrixAutoUpdate!==void 0&&(o.matrixAutoUpdate=e.matrixAutoUpdate),o.matrixAutoUpdate&&o.matrix.decompose(o.position,o.quaternion,o.scale)):(e.position!==void 0&&o.position.fromArray(e.position),e.rotation!==void 0&&o.rotation.fromArray(e.rotation),e.quaternion!==void 0&&o.quaternion.fromArray(e.quaternion),e.scale!==void 0&&o.scale.fromArray(e.scale)),e.up!==void 0&&o.up.fromArray(e.up),e.pivot!==void 0&&(o.pivot=new R().fromArray(e.pivot)),e.morphTargetDictionary!==void 0&&(o.morphTargetDictionary=Object.assign({},e.morphTargetDictionary)),e.morphTargetInfluences!==void 0&&(o.morphTargetInfluences=e.morphTargetInfluences.slice()),e.castShadow!==void 0&&(o.castShadow=e.castShadow),e.receiveShadow!==void 0&&(o.receiveShadow=e.receiveShadow),e.shadow&&(e.shadow.intensity!==void 0&&(o.shadow.intensity=e.shadow.intensity),e.shadow.bias!==void 0&&(o.shadow.bias=e.shadow.bias),e.shadow.normalBias!==void 0&&(o.shadow.normalBias=e.shadow.normalBias),e.shadow.radius!==void 0&&(o.shadow.radius=e.shadow.radius),e.shadow.blurSamples!==void 0&&(o.shadow.blurSamples=e.shadow.blurSamples),e.shadow.focus!==void 0&&(o.shadow.focus=e.shadow.focus),e.shadow.aspect!==void 0&&(o.shadow.aspect=e.shadow.aspect),e.shadow.mapSize!==void 0&&o.shadow.mapSize.fromArray(e.shadow.mapSize),e.shadow.camera!==void 0&&(o.shadow.camera=this.parseObject(e.shadow.camera))),e.visible!==void 0&&(o.visible=e.visible),e.frustumCulled!==void 0&&(o.frustumCulled=e.frustumCulled),e.renderOrder!==void 0&&(o.renderOrder=e.renderOrder),e.static!==void 0&&(o.static=e.static),e.userData!==void 0&&(o.userData=e.userData),e.layers!==void 0&&(o.layers.mask=e.layers),e.children!==void 0){let d=e.children;for(let f=0;f<d.length;f++)o.add(this.parseObject(d[f],t,n,i,s))}if(e.animations!==void 0){let d=e.animations;for(let f=0;f<d.length;f++){let p=d[f];o.animations.push(s[p])}}if(e.type==="LOD"){e.autoUpdate!==void 0&&(o.autoUpdate=e.autoUpdate);let d=e.levels;for(let f=0;f<d.length;f++){let p=d[f],_=o.getObjectByProperty("uuid",p.object);_!==void 0&&o.addLevel(_,p.distance,p.hysteresis)}}return o}bindSkeletons(e,t){Object.keys(t).length!==0&&e.traverse(function(n){if(n.isSkinnedMesh===!0&&n.skeleton!==void 0){let i=t[n.skeleton];i===void 0?de("ObjectLoader: No skeleton found with UUID:",n.skeleton):n.bind(i,n.bindMatrix)}})}bindLightTargets(e){e.traverse(function(t){if(t.isDirectionalLight||t.isSpotLight){let n=t.target,i=e.getObjectByProperty("uuid",n);i!==void 0?t.target=i:t.target=new st}})}},tx={UVMapping:Ka,CubeReflectionMapping:ni,CubeRefractionMapping:Oi,EquirectangularReflectionMapping:io,EquirectangularRefractionMapping:so,CubeUVReflectionMapping:Zs},cm={RepeatWrapping:li,ClampToEdgeWrapping:Yt,MirroredRepeatWrapping:$i},hm={NearestFilter:At,NearestMipmapNearestFilter:ro,NearestMipmapLinearFilter:Bi,LinearFilter:pt,LinearMipmapNearestFilter:cs,LinearMipmapLinearFilter:vn},Qu=new WeakMap,$r=class extends It{constructor(e){super(e),this.isImageBitmapLoader=!0,typeof createImageBitmap>"u"&&de("ImageBitmapLoader: createImageBitmap() not supported."),typeof fetch>"u"&&de("ImageBitmapLoader: fetch() not supported."),this.options={premultiplyAlpha:"none"},this._abortController=new AbortController}setOptions(e){return this.options=e,this}load(e,t,n,i){e===void 0&&(e=""),this.path!==void 0&&(e=this.path+e),e=this.manager.resolveURL(e);let s=this,o=Yn.get(`image-bitmap:${e}`);if(o!==void 0){if(s.manager.itemStart(e),o.then){o.then(c=>{Qu.has(o)===!0?(i&&i(Qu.get(o)),s.manager.itemError(e),s.manager.itemEnd(e)):(t&&t(c),s.manager.itemEnd(e))});return}setTimeout(function(){t&&t(o),s.manager.itemEnd(e)},0);return}let a={};a.credentials=this.crossOrigin==="anonymous"?"same-origin":"include",a.headers=this.requestHeader,a.signal=typeof AbortSignal.any=="function"?AbortSignal.any([this._abortController.signal,this.manager.abortController.signal]):this._abortController.signal;let l=fetch(e,a).then(function(c){return c.blob()}).then(function(c){return createImageBitmap(c,Object.assign({},s.options,{colorSpaceConversion:"none"}))}).then(function(c){return Yn.add(`image-bitmap:${e}`,c),t&&t(c),s.manager.itemEnd(e),c}).catch(function(c){i&&i(c),Qu.set(l,c),Yn.remove(`image-bitmap:${e}`),s.manager.itemError(e),s.manager.itemEnd(e)});Yn.add(`image-bitmap:${e}`,l),s.manager.itemStart(e)}abort(){return this._abortController.abort(),this._abortController=new AbortController,this}},Ec,Qr=class{static getContext(){return Ec===void 0&&(Ec=new(window.AudioContext||window.webkitAudioContext)),Ec}static setContext(e){Ec=e}},oh=class extends It{constructor(e){super(e)}load(e,t,n,i){let s=this,o=new kt(this.manager);o.setResponseType("arraybuffer"),o.setPath(this.path),o.setRequestHeader(this.requestHeader),o.setWithCredentials(this.withCredentials),o.load(e,function(l){try{let c=l.slice(0),h=Qr.getContext(),u=e+"#decode";s.manager.itemStart(u),h.decodeAudioData(c,function(d){t(d),s.manager.itemEnd(u)}).catch(function(d){a(d),s.manager.itemEnd(u)})}catch(c){a(c)}},n,i);function a(l){i?i(l):Pe(l),s.manager.itemError(e)}}},um=new ze,dm=new ze,xs=new ze,ah=class{constructor(){this.type="StereoCamera",this.aspect=1,this.eyeSep=.064,this.cameraL=new Lt,this.cameraL.layers.enable(1),this.cameraL.matrixAutoUpdate=!1,this.cameraR=new Lt,this.cameraR.layers.enable(2),this.cameraR.matrixAutoUpdate=!1,this._cache={focus:null,fov:null,aspect:null,near:null,far:null,zoom:null,eyeSep:null}}update(e){let t=this._cache;if(t.focus!==e.focus||t.fov!==e.fov||t.aspect!==e.aspect*this.aspect||t.near!==e.near||t.far!==e.far||t.zoom!==e.zoom||t.eyeSep!==this.eyeSep){t.focus=e.focus,t.fov=e.fov,t.aspect=e.aspect*this.aspect,t.near=e.near,t.far=e.far,t.zoom=e.zoom,t.eyeSep=this.eyeSep,xs.copy(e.projectionMatrix);let i=t.eyeSep/2,s=i*t.near/t.focus,o=t.near*Math.tan(Ts*t.fov*.5)/t.zoom,a,l;dm.elements[12]=-i,um.elements[12]=i,a=-o*t.aspect+s,l=o*t.aspect+s,xs.elements[0]=2*t.near/(l-a),xs.elements[8]=(l+a)/(l-a),this.cameraL.projectionMatrix.copy(xs),a=-o*t.aspect-s,l=o*t.aspect-s,xs.elements[0]=2*t.near/(l-a),xs.elements[8]=(l+a)/(l-a),this.cameraR.projectionMatrix.copy(xs)}this.cameraL.matrix.copy(e.matrixWorld).multiply(dm),this.cameraL.matrixWorldNeedsUpdate=!0,this.cameraR.matrix.copy(e.matrixWorld).multiply(um),this.cameraR.matrixWorldNeedsUpdate=!0}},yr=-90,vr=1,Ga=class extends st{constructor(e,t,n){super(),this.type="CubeCamera",this.renderTarget=n,this.coordinateSystem=null,this.activeMipmapLevel=0;let i=new Lt(yr,vr,e,t);i.layers=this.layers,this.add(i);let s=new Lt(yr,vr,e,t);s.layers=this.layers,this.add(s);let o=new Lt(yr,vr,e,t);o.layers=this.layers,this.add(o);let a=new Lt(yr,vr,e,t);a.layers=this.layers,this.add(a);let l=new Lt(yr,vr,e,t);l.layers=this.layers,this.add(l);let c=new Lt(yr,vr,e,t);c.layers=this.layers,this.add(c)}updateCoordinateSystem(){let e=this.coordinateSystem,t=this.children.concat(),[n,i,s,o,a,l]=t;for(let c of t)this.remove(c);if(e===_n)n.up.set(0,1,0),n.lookAt(1,0,0),i.up.set(0,1,0),i.lookAt(-1,0,0),s.up.set(0,0,-1),s.lookAt(0,1,0),o.up.set(0,0,1),o.lookAt(0,-1,0),a.up.set(0,1,0),a.lookAt(0,0,1),l.up.set(0,1,0),l.lookAt(0,0,-1);else if(e===ts)n.up.set(0,-1,0),n.lookAt(-1,0,0),i.up.set(0,-1,0),i.lookAt(1,0,0),s.up.set(0,0,1),s.lookAt(0,1,0),o.up.set(0,0,-1),o.lookAt(0,-1,0),a.up.set(0,-1,0),a.lookAt(0,0,1),l.up.set(0,-1,0),l.lookAt(0,0,-1);else throw new Error("THREE.CubeCamera.updateCoordinateSystem(): Invalid coordinate system: "+e);for(let c of t)this.add(c),c.updateMatrixWorld()}update(e,t){this.parent===null&&this.updateMatrixWorld();let{renderTarget:n,activeMipmapLevel:i}=this;this.coordinateSystem!==e.coordinateSystem&&(this.coordinateSystem=e.coordinateSystem,this.updateCoordinateSystem());let[s,o,a,l,c,h]=this.children,u=e.getRenderTarget(),d=e.getActiveCubeFace(),f=e.getActiveMipmapLevel(),p=e.xr.enabled;e.xr.enabled=!1;let _=n.texture.generateMipmaps;n.texture.generateMipmaps=!1;let g=!1;e.isWebGLRenderer===!0?g=e.state.buffers.depth.getReversed():g=e.reversedDepthBuffer,e.setRenderTarget(n,0,i),g&&e.autoClear===!1&&e.clearDepth(),e.render(t,s),e.setRenderTarget(n,1,i),g&&e.autoClear===!1&&e.clearDepth(),e.render(t,o),e.setRenderTarget(n,2,i),g&&e.autoClear===!1&&e.clearDepth(),e.render(t,a),e.setRenderTarget(n,3,i),g&&e.autoClear===!1&&e.clearDepth(),e.render(t,l),e.setRenderTarget(n,4,i),g&&e.autoClear===!1&&e.clearDepth(),e.render(t,c),n.texture.generateMipmaps=_,e.setRenderTarget(n,5,i),g&&e.autoClear===!1&&e.clearDepth(),e.render(t,h),e.setRenderTarget(u,d,f),e.xr.enabled=p,n.texture.needsPMREMUpdate=!0}},Ha=class extends Lt{constructor(e=[]){super(),this.isArrayCamera=!0,this.isMultiViewCamera=!1,this.cameras=e}},Wa=class{constructor(){this._previousTime=0,this._currentTime=0,this._startTime=performance.now(),this._delta=0,this._elapsed=0,this._timescale=1,this._document=null,this._pageVisibilityHandler=null}connect(e){this._document=e,e.hidden!==void 0&&(this._pageVisibilityHandler=nx.bind(this),e.addEventListener("visibilitychange",this._pageVisibilityHandler,!1))}disconnect(){this._pageVisibilityHandler!==null&&(this._document.removeEventListener("visibilitychange",this._pageVisibilityHandler),this._pageVisibilityHandler=null),this._document=null}getDelta(){return this._delta/1e3}getElapsed(){return this._elapsed/1e3}getTimescale(){return this._timescale}setTimescale(e){return this._timescale=e,this}reset(){return this._currentTime=performance.now()-this._startTime,this}dispose(){this.disconnect()}update(e){return this._pageVisibilityHandler!==null&&this._document.hidden===!0?this._delta=0:(this._previousTime=this._currentTime,this._currentTime=(e!==void 0?e:performance.now())-this._startTime,this._delta=(this._currentTime-this._previousTime)*this._timescale,this._elapsed+=this._delta),this}};function nx(){this._document.hidden===!1&&this.reset()}var ys=new R,ed=new wt,ix=new R,vs=new R,Ms=new R,lh=class extends st{constructor(){super(),this.type="AudioListener",this.context=Qr.getContext(),this.gain=this.context.createGain(),this.gain.connect(this.context.destination),this.filter=null,this.timeDelta=0,this._timer=new Wa}getInput(){return this.gain}removeFilter(){return this.filter!==null&&(this.gain.disconnect(this.filter),this.filter.disconnect(this.context.destination),this.gain.connect(this.context.destination),this.filter=null),this}getFilter(){return this.filter}setFilter(e){return this.filter!==null?(this.gain.disconnect(this.filter),this.filter.disconnect(this.context.destination)):this.gain.disconnect(this.context.destination),this.filter=e,this.gain.connect(this.filter),this.filter.connect(this.context.destination),this}getMasterVolume(){return this.gain.gain.value}setMasterVolume(e){return this.gain.gain.setTargetAtTime(e,this.context.currentTime,.01),this}updateMatrixWorld(e){super.updateMatrixWorld(e),this._timer.update();let t=this.context.listener;if(this.timeDelta=this._timer.getDelta(),this.matrixWorld.decompose(ys,ed,ix),vs.set(0,0,-1).applyQuaternion(ed),Ms.set(0,1,0).applyQuaternion(ed),t.positionX){let n=this.context.currentTime+this.timeDelta;t.positionX.linearRampToValueAtTime(ys.x,n),t.positionY.linearRampToValueAtTime(ys.y,n),t.positionZ.linearRampToValueAtTime(ys.z,n),t.forwardX.linearRampToValueAtTime(vs.x,n),t.forwardY.linearRampToValueAtTime(vs.y,n),t.forwardZ.linearRampToValueAtTime(vs.z,n),t.upX.linearRampToValueAtTime(Ms.x,n),t.upY.linearRampToValueAtTime(Ms.y,n),t.upZ.linearRampToValueAtTime(Ms.z,n)}else t.setPosition(ys.x,ys.y,ys.z),t.setOrientation(vs.x,vs.y,vs.z,Ms.x,Ms.y,Ms.z)}},Xa=class extends st{constructor(e){super(),this.type="Audio",this.listener=e,this.context=e.context,this.gain=this.context.createGain(),this.gain.connect(e.getInput()),this.autoplay=!1,this.buffer=null,this.detune=0,this.loop=!1,this.loopStart=0,this.loopEnd=0,this.offset=0,this.duration=void 0,this.playbackRate=1,this.isPlaying=!1,this.hasPlaybackControl=!0,this.source=null,this.sourceType="empty",this._startedAt=0,this._progress=0,this._connected=!1,this.filters=[]}getOutput(){return this.gain}setNodeSource(e){return this.hasPlaybackControl=!1,this.sourceType="audioNode",this.source=e,this.connect(),this}setMediaElementSource(e){return this.hasPlaybackControl=!1,this.sourceType="mediaNode",this.source=this.context.createMediaElementSource(e),this.connect(),this}setMediaStreamSource(e){return this.hasPlaybackControl=!1,this.sourceType="mediaStreamNode",this.source=this.context.createMediaStreamSource(e),this.connect(),this}setBuffer(e){return this.buffer=e,this.sourceType="buffer",this.autoplay&&this.play(),this}play(e=0){if(this.isPlaying===!0){de("Audio: Audio is already playing.");return}if(this.hasPlaybackControl===!1){de("Audio: this Audio has no playback control.");return}this._startedAt=this.context.currentTime+e;let t=this.context.createBufferSource();return t.buffer=this.buffer,t.loop=this.loop,t.loopStart=this.loopStart,t.loopEnd=this.loopEnd,t.onended=this.onEnded.bind(this),t.start(this._startedAt,this._progress+this.offset,this.duration),this.isPlaying=!0,this.source=t,this.setDetune(this.detune),this.setPlaybackRate(this.playbackRate),this.connect()}pause(){if(this.hasPlaybackControl===!1){de("Audio: this Audio has no playback control.");return}return this.isPlaying===!0&&(this._progress+=Math.max(this.context.currentTime-this._startedAt,0)*this.playbackRate,this.loop===!0&&(this._progress=this._progress%(this.duration||this.buffer.duration)),this.source.stop(),this.source.onended=null,this.isPlaying=!1),this}stop(e=0){if(this.hasPlaybackControl===!1){de("Audio: this Audio has no playback control.");return}return this._progress=0,this.source!==null&&(this.source.stop(this.context.currentTime+e),this.source.onended=null),this.isPlaying=!1,this}connect(){if(this.filters.length>0){this.source.connect(this.filters[0]);for(let e=1,t=this.filters.length;e<t;e++)this.filters[e-1].connect(this.filters[e]);this.filters[this.filters.length-1].connect(this.getOutput())}else this.source.connect(this.getOutput());return this._connected=!0,this}disconnect(){if(this._connected!==!1){if(this.filters.length>0){this.source.disconnect(this.filters[0]);for(let e=1,t=this.filters.length;e<t;e++)this.filters[e-1].disconnect(this.filters[e]);this.filters[this.filters.length-1].disconnect(this.getOutput())}else this.source.disconnect(this.getOutput());return this._connected=!1,this}}getFilters(){return this.filters}setFilters(e){return e||(e=[]),this._connected===!0?(this.disconnect(),this.filters=e.slice(),this.connect()):this.filters=e.slice(),this}setDetune(e){return this.detune=e,this.isPlaying===!0&&this.source.detune!==void 0&&this.source.detune.setTargetAtTime(this.detune,this.context.currentTime,.01),this}getDetune(){return this.detune}getFilter(){return this.getFilters()[0]}setFilter(e){return this.setFilters(e?[e]:[])}setPlaybackRate(e){if(this.hasPlaybackControl===!1){de("Audio: this Audio has no playback control.");return}return this.playbackRate=e,this.isPlaying===!0&&this.source.playbackRate.setTargetAtTime(this.playbackRate,this.context.currentTime,.01),this}getPlaybackRate(){return this.playbackRate}onEnded(){this.isPlaying=!1,this._progress=0}getLoop(){return this.hasPlaybackControl===!1?(de("Audio: this Audio has no playback control."),!1):this.loop}setLoop(e){if(this.hasPlaybackControl===!1){de("Audio: this Audio has no playback control.");return}return this.loop=e,this.isPlaying===!0&&(this.source.loop=this.loop),this}setLoopStart(e){return this.loopStart=e,this}setLoopEnd(e){return this.loopEnd=e,this}getVolume(){return this.gain.gain.value}setVolume(e){return this.gain.gain.setTargetAtTime(e,this.context.currentTime,.01),this}copy(e,t){return super.copy(e,t),e.sourceType!=="buffer"?(de("Audio: Audio source type cannot be copied."),this):(this.autoplay=e.autoplay,this.buffer=e.buffer,this.detune=e.detune,this.loop=e.loop,this.loopStart=e.loopStart,this.loopEnd=e.loopEnd,this.offset=e.offset,this.duration=e.duration,this.playbackRate=e.playbackRate,this.hasPlaybackControl=e.hasPlaybackControl,this.sourceType=e.sourceType,this.filters=e.filters.slice(),this)}clone(e){return new this.constructor(this.listener).copy(this,e)}},Ss=new R,fm=new wt,sx=new R,bs=new R,ch=class extends Xa{constructor(e){super(e),this.panner=this.context.createPanner(),this.panner.panningModel="HRTF",this.panner.connect(this.gain)}connect(){return super.connect(),this.panner.connect(this.gain),this}disconnect(){return super.disconnect(),this.panner.disconnect(this.gain),this}getOutput(){return this.panner}getRefDistance(){return this.panner.refDistance}setRefDistance(e){return this.panner.refDistance=e,this}getRolloffFactor(){return this.panner.rolloffFactor}setRolloffFactor(e){return this.panner.rolloffFactor=e,this}getDistanceModel(){return this.panner.distanceModel}setDistanceModel(e){return this.panner.distanceModel=e,this}getMaxDistance(){return this.panner.maxDistance}setMaxDistance(e){return this.panner.maxDistance=e,this}setDirectionalCone(e,t,n){return this.panner.coneInnerAngle=e,this.panner.coneOuterAngle=t,this.panner.coneOuterGain=n,this}updateMatrixWorld(e){if(super.updateMatrixWorld(e),this.hasPlaybackControl===!0&&this.isPlaying===!1)return;this.matrixWorld.decompose(Ss,fm,sx),bs.set(0,0,1).applyQuaternion(fm);let t=this.panner;if(t.positionX){let n=this.context.currentTime+this.listener.timeDelta;t.positionX.linearRampToValueAtTime(Ss.x,n),t.positionY.linearRampToValueAtTime(Ss.y,n),t.positionZ.linearRampToValueAtTime(Ss.z,n),t.orientationX.linearRampToValueAtTime(bs.x,n),t.orientationY.linearRampToValueAtTime(bs.y,n),t.orientationZ.linearRampToValueAtTime(bs.z,n)}else t.setPosition(Ss.x,Ss.y,Ss.z),t.setOrientation(bs.x,bs.y,bs.z)}},hh=class{constructor(e,t=2048){this.analyser=e.context.createAnalyser(),this.analyser.fftSize=t,this.data=new Uint8Array(this.analyser.frequencyBinCount),e.getOutput().connect(this.analyser)}getFrequencyData(){return this.analyser.getByteFrequencyData(this.data),this.data}getAverageFrequency(){let e=0,t=this.getFrequencyData();for(let n=0;n<t.length;n++)e+=t[n];return e/t.length}},qa=class{constructor(e,t,n){this.binding=e,this.valueSize=n;let i,s,o;switch(t){case"quaternion":i=this._slerp,s=this._slerpAdditive,o=this._setAdditiveIdentityQuaternion,this.buffer=new Float64Array(n*6),this._workIndex=5;break;case"string":case"bool":i=this._select,s=this._select,o=this._setAdditiveIdentityOther,this.buffer=new Array(n*5);break;default:i=this._lerp,s=this._lerpAdditive,o=this._setAdditiveIdentityNumeric,this.buffer=new Float64Array(n*5)}this._mixBufferRegion=i,this._mixBufferRegionAdditive=s,this._setIdentity=o,this._origIndex=3,this._addIndex=4,this.cumulativeWeight=0,this.cumulativeWeightAdditive=0,this.useCount=0,this.referenceCount=0}accumulate(e,t){let n=this.buffer,i=this.valueSize,s=e*i+i,o=this.cumulativeWeight;if(o===0){for(let a=0;a!==i;++a)n[s+a]=n[a];o=t}else{o+=t;let a=t/o;this._mixBufferRegion(n,s,0,a,i)}this.cumulativeWeight=o}accumulateAdditive(e){let t=this.buffer,n=this.valueSize,i=n*this._addIndex;this.cumulativeWeightAdditive===0&&this._setIdentity(),this._mixBufferRegionAdditive(t,i,0,e,n),this.cumulativeWeightAdditive+=e}apply(e){let t=this.valueSize,n=this.buffer,i=e*t+t,s=this.cumulativeWeight,o=this.cumulativeWeightAdditive,a=this.binding;if(this.cumulativeWeight=0,this.cumulativeWeightAdditive=0,s<1){let l=t*this._origIndex;this._mixBufferRegion(n,i,l,1-s,t)}o>0&&this._mixBufferRegionAdditive(n,i,this._addIndex*t,1,t);for(let l=t,c=t+t;l!==c;++l)if(n[l]!==n[l+t]){a.setValue(n,i);break}}saveOriginalState(){let e=this.binding,t=this.buffer,n=this.valueSize,i=n*this._origIndex;e.getValue(t,i);for(let s=n,o=i;s!==o;++s)t[s]=t[i+s%n];this._setIdentity(),this.cumulativeWeight=0,this.cumulativeWeightAdditive=0}restoreOriginalState(){let e=this.valueSize*3;this.binding.setValue(this.buffer,e)}_setAdditiveIdentityNumeric(){let e=this._addIndex*this.valueSize,t=e+this.valueSize;for(let n=e;n<t;n++)this.buffer[n]=0}_setAdditiveIdentityQuaternion(){this._setAdditiveIdentityNumeric(),this.buffer[this._addIndex*this.valueSize+3]=1}_setAdditiveIdentityOther(){let e=this._origIndex*this.valueSize,t=this._addIndex*this.valueSize;for(let n=0;n<this.valueSize;n++)this.buffer[t+n]=this.buffer[e+n]}_select(e,t,n,i,s){if(i>=.5)for(let o=0;o!==s;++o)e[t+o]=e[n+o]}_slerp(e,t,n,i){wt.slerpFlat(e,t,e,t,e,n,i)}_slerpAdditive(e,t,n,i,s){let o=this._workIndex*s;wt.multiplyQuaternionsFlat(e,o,e,t,e,n),wt.slerpFlat(e,t,e,t,e,o,i)}_lerp(e,t,n,i,s){let o=1-i;for(let a=0;a!==s;++a){let l=t+a;e[l]=e[l]*o+e[n+a]*i}}_lerpAdditive(e,t,n,i,s){for(let o=0;o!==s;++o){let a=t+o;e[a]=e[a]+e[n+o]*i}}},of="\\[\\]\\.:\\/",rx=new RegExp("["+of+"]","g"),af="[^"+of+"]",ox="[^"+of.replace("\\.","")+"]",ax=/((?:WC+[\/:])*)/.source.replace("WC",af),lx=/(WCOD+)?/.source.replace("WCOD",ox),cx=/(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace("WC",af),hx=/\.(WC+)(?:\[(.+)\])?/.source.replace("WC",af),ux=new RegExp("^"+ax+lx+cx+hx+"$"),dx=["material","materials","bones","map"],pd=class{constructor(e,t,n){let i=n||lt.parseTrackName(t);this._targetGroup=e,this._bindings=e.subscribe_(t,i)}getValue(e,t){this.bind();let n=this._targetGroup.nCachedObjects_,i=this._bindings[n];i!==void 0&&i.getValue(e,t)}setValue(e,t){let n=this._bindings;for(let i=this._targetGroup.nCachedObjects_,s=n.length;i!==s;++i)n[i].setValue(e,t)}bind(){let e=this._bindings;for(let t=this._targetGroup.nCachedObjects_,n=e.length;t!==n;++t)e[t].bind()}unbind(){let e=this._bindings;for(let t=this._targetGroup.nCachedObjects_,n=e.length;t!==n;++t)e[t].unbind()}},lt=class r{constructor(e,t,n){this.path=t,this.parsedPath=n||r.parseTrackName(t),this.node=r.findNode(e,this.parsedPath.nodeName),this.rootNode=e,this.getValue=this._getValue_unbound,this.setValue=this._setValue_unbound}static create(e,t,n){return e&&e.isAnimationObjectGroup?new r.Composite(e,t,n):new r(e,t,n)}static sanitizeNodeName(e){return e.replace(/\s/g,"_").replace(rx,"")}static parseTrackName(e){let t=ux.exec(e);if(t===null)throw new Error("THREE.PropertyBinding: Cannot parse trackName: "+e);let n={nodeName:t[2],objectName:t[3],objectIndex:t[4],propertyName:t[5],propertyIndex:t[6]},i=n.nodeName&&n.nodeName.lastIndexOf(".");if(i!==void 0&&i!==-1){let s=n.nodeName.substring(i+1);dx.indexOf(s)!==-1&&(n.nodeName=n.nodeName.substring(0,i),n.objectName=s)}if(n.propertyName===null||n.propertyName.length===0)throw new Error("THREE.PropertyBinding: can not parse propertyName from trackName: "+e);return n}static findNode(e,t){if(t===void 0||t===""||t==="."||t===-1||t===e.name||t===e.uuid)return e;if(e.skeleton){let n=e.skeleton.getBoneByName(t);if(n!==void 0)return n}if(e.children){let n=function(s){for(let o=0;o<s.length;o++){let a=s[o];if(a.name===t||a.uuid===t)return a;let l=n(a.children);if(l)return l}return null},i=n(e.children);if(i)return i}return null}_getValue_unavailable(){}_setValue_unavailable(){}_getValue_direct(e,t){e[t]=this.targetObject[this.propertyName]}_getValue_array(e,t){let n=this.resolvedProperty;for(let i=0,s=n.length;i!==s;++i)e[t++]=n[i]}_getValue_arrayElement(e,t){e[t]=this.resolvedProperty[this.propertyIndex]}_getValue_toArray(e,t){this.resolvedProperty.toArray(e,t)}_setValue_direct(e,t){this.targetObject[this.propertyName]=e[t]}_setValue_direct_setNeedsUpdate(e,t){this.targetObject[this.propertyName]=e[t],this.targetObject.needsUpdate=!0}_setValue_direct_setMatrixWorldNeedsUpdate(e,t){this.targetObject[this.propertyName]=e[t],this.targetObject.matrixWorldNeedsUpdate=!0}_setValue_array(e,t){let n=this.resolvedProperty;for(let i=0,s=n.length;i!==s;++i)n[i]=e[t++]}_setValue_array_setNeedsUpdate(e,t){let n=this.resolvedProperty;for(let i=0,s=n.length;i!==s;++i)n[i]=e[t++];this.targetObject.needsUpdate=!0}_setValue_array_setMatrixWorldNeedsUpdate(e,t){let n=this.resolvedProperty;for(let i=0,s=n.length;i!==s;++i)n[i]=e[t++];this.targetObject.matrixWorldNeedsUpdate=!0}_setValue_arrayElement(e,t){this.resolvedProperty[this.propertyIndex]=e[t]}_setValue_arrayElement_setNeedsUpdate(e,t){this.resolvedProperty[this.propertyIndex]=e[t],this.targetObject.needsUpdate=!0}_setValue_arrayElement_setMatrixWorldNeedsUpdate(e,t){this.resolvedProperty[this.propertyIndex]=e[t],this.targetObject.matrixWorldNeedsUpdate=!0}_setValue_fromArray(e,t){this.resolvedProperty.fromArray(e,t)}_setValue_fromArray_setNeedsUpdate(e,t){this.resolvedProperty.fromArray(e,t),this.targetObject.needsUpdate=!0}_setValue_fromArray_setMatrixWorldNeedsUpdate(e,t){this.resolvedProperty.fromArray(e,t),this.targetObject.matrixWorldNeedsUpdate=!0}_getValue_unbound(e,t){this.bind(),this.getValue(e,t)}_setValue_unbound(e,t){this.bind(),this.setValue(e,t)}bind(){let e=this.node,t=this.parsedPath,n=t.objectName,i=t.propertyName,s=t.propertyIndex;if(e||(e=r.findNode(this.rootNode,t.nodeName),this.node=e),this.getValue=this._getValue_unavailable,this.setValue=this._setValue_unavailable,!e){de("PropertyBinding: No target node found for track: "+this.path+".");return}if(n){let c=t.objectIndex;switch(n){case"materials":if(!e.material){Pe("PropertyBinding: Can not bind to material as node does not have a material.",this);return}if(!e.material.materials){Pe("PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.",this);return}e=e.material.materials;break;case"bones":if(!e.skeleton){Pe("PropertyBinding: Can not bind to bones as node does not have a skeleton.",this);return}e=e.skeleton.bones;for(let h=0;h<e.length;h++)if(e[h].name===c){c=h;break}break;case"map":if("map"in e){e=e.map;break}if(!e.material){Pe("PropertyBinding: Can not bind to material as node does not have a material.",this);return}if(!e.material.map){Pe("PropertyBinding: Can not bind to material.map as node.material does not have a map.",this);return}e=e.material.map;break;default:if(e[n]===void 0){Pe("PropertyBinding: Can not bind to objectName of node undefined.",this);return}e=e[n]}if(c!==void 0){if(e[c]===void 0){Pe("PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.",this,e);return}e=e[c]}}let o=e[i];if(o===void 0){let c=t.nodeName;Pe("PropertyBinding: Trying to update property for track: "+c+"."+i+" but it wasn't found.",e);return}let a=this.Versioning.None;this.targetObject=e,e.isMaterial===!0?a=this.Versioning.NeedsUpdate:e.isObject3D===!0&&(a=this.Versioning.MatrixWorldNeedsUpdate);let l=this.BindingType.Direct;if(s!==void 0){if(i==="morphTargetInfluences"){if(!e.geometry){Pe("PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.",this);return}if(!e.geometry.morphAttributes){Pe("PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.",this);return}e.morphTargetDictionary[s]!==void 0&&(s=e.morphTargetDictionary[s])}l=this.BindingType.ArrayElement,this.resolvedProperty=o,this.propertyIndex=s}else o.fromArray!==void 0&&o.toArray!==void 0?(l=this.BindingType.HasFromToArray,this.resolvedProperty=o):Array.isArray(o)?(l=this.BindingType.EntireArray,this.resolvedProperty=o):this.propertyName=i;this.getValue=this.GetterByBindingType[l],this.setValue=this.SetterByBindingTypeAndVersioning[l][a]}unbind(){this.node=null,this.getValue=this._getValue_unbound,this.setValue=this._setValue_unbound}};lt.Composite=pd;lt.prototype.BindingType={Direct:0,EntireArray:1,ArrayElement:2,HasFromToArray:3};lt.prototype.Versioning={None:0,NeedsUpdate:1,MatrixWorldNeedsUpdate:2};lt.prototype.GetterByBindingType=[lt.prototype._getValue_direct,lt.prototype._getValue_array,lt.prototype._getValue_arrayElement,lt.prototype._getValue_toArray];lt.prototype.SetterByBindingTypeAndVersioning=[[lt.prototype._setValue_direct,lt.prototype._setValue_direct_setNeedsUpdate,lt.prototype._setValue_direct_setMatrixWorldNeedsUpdate],[lt.prototype._setValue_array,lt.prototype._setValue_array_setNeedsUpdate,lt.prototype._setValue_array_setMatrixWorldNeedsUpdate],[lt.prototype._setValue_arrayElement,lt.prototype._setValue_arrayElement_setNeedsUpdate,lt.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate],[lt.prototype._setValue_fromArray,lt.prototype._setValue_fromArray_setNeedsUpdate,lt.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate]];var uh=class{constructor(){this.isAnimationObjectGroup=!0,this.uuid=Tn(),this._objects=Array.prototype.slice.call(arguments),this.nCachedObjects_=0;let e={};this._indicesByUUID=e;for(let n=0,i=arguments.length;n!==i;++n)e[arguments[n].uuid]=n;this._paths=[],this._parsedPaths=[],this._bindings=[],this._bindingsIndicesByPath={};let t=this;this.stats={objects:{get total(){return t._objects.length},get inUse(){return this.total-t.nCachedObjects_}},get bindingsPerObject(){return t._bindings.length}}}add(){let e=this._objects,t=this._indicesByUUID,n=this._paths,i=this._parsedPaths,s=this._bindings,o=s.length,a,l=e.length,c=this.nCachedObjects_;for(let h=0,u=arguments.length;h!==u;++h){let d=arguments[h],f=d.uuid,p=t[f];if(p===void 0){p=l++,t[f]=p,e.push(d);for(let _=0,g=o;_!==g;++_)s[_].push(new lt(d,n[_],i[_]))}else if(p<c){a=e[p];let _=--c,g=e[_];t[g.uuid]=p,e[p]=g,t[f]=_,e[_]=d;for(let m=0,y=o;m!==y;++m){let b=s[m],x=b[_],T=b[p];b[p]=x,T===void 0&&(T=new lt(d,n[m],i[m])),b[_]=T}}else e[p]!==a&&Pe("AnimationObjectGroup: Different objects with the same UUID detected. Clean the caches or recreate your infrastructure when reloading scenes.")}this.nCachedObjects_=c}remove(){let e=this._objects,t=this._indicesByUUID,n=this._bindings,i=n.length,s=this.nCachedObjects_;for(let o=0,a=arguments.length;o!==a;++o){let l=arguments[o],c=l.uuid,h=t[c];if(h!==void 0&&h>=s){let u=s++,d=e[u];t[d.uuid]=h,e[h]=d,t[c]=u,e[u]=l;for(let f=0,p=i;f!==p;++f){let _=n[f],g=_[u],m=_[h];_[h]=g,_[u]=m}}}this.nCachedObjects_=s}uncache(){let e=this._objects,t=this._indicesByUUID,n=this._bindings,i=n.length,s=this.nCachedObjects_,o=e.length;for(let a=0,l=arguments.length;a!==l;++a){let c=arguments[a],h=c.uuid,u=t[h];if(u!==void 0)if(delete t[h],u<s){let d=--s,f=e[d],p=--o,_=e[p];u!==d&&(t[f.uuid]=u),e[u]=f,d!==p&&(t[_.uuid]=d),e[d]=_,e.pop();for(let g=0,m=i;g!==m;++g){let y=n[g],b=y[d],x=y[p];y[u]=b,y[d]=x,y.pop()}}else{let d=--o,f=e[d];u!==d&&(t[f.uuid]=u),e[u]=f,e.pop();for(let p=0,_=i;p!==_;++p){let g=n[p];g[u]=g[d],g.pop()}}}this.nCachedObjects_=s}subscribe_(e,t){let n=this._bindingsIndicesByPath,i=n[e],s=this._bindings;if(i!==void 0)return s[i];let o=this._paths,a=this._parsedPaths,l=this._objects,c=l.length,h=this.nCachedObjects_,u=new Array(c);i=s.length,n[e]=i,o.push(e),a.push(t),s.push(u);for(let d=h,f=l.length;d!==f;++d){let p=l[d];u[d]=new lt(p,e,t)}return u}unsubscribe_(e){let t=this._bindingsIndicesByPath,n=t[e];if(n!==void 0){let i=this._paths,s=this._parsedPaths,o=this._bindings,a=o.length-1,l=o[a],c=i[a];t[c]=n,o[n]=l,o.pop(),s[n]=s[a],s.pop(),i[n]=i[a],i.pop()}}},Ya=class{constructor(e,t,n=null,i=t.blendMode){this._mixer=e,this._clip=t,this._localRoot=n,this.blendMode=i;let s=t.tracks,o=s.length,a=new Array(o),l={endingStart:Ji,endingEnd:Ji};for(let c=0;c!==o;++c){let h=s[c].createInterpolant(null);a[c]=h,h.settings=l}this._interpolantSettings=l,this._interpolants=a,this._propertyBindings=new Array(o),this._cacheIndex=null,this._byClipCacheIndex=null,this._timeScaleInterpolant=null,this._restoreTimeScale=null,this._weightInterpolant=null,this.loop=Gd,this._loopCount=-1,this._startTime=null,this.time=0,this.timeScale=1,this._effectiveTimeScale=1,this.weight=1,this._effectiveWeight=1,this.repetitions=1/0,this.paused=!1,this.enabled=!0,this.clampWhenFinished=!1,this.zeroSlopeAtStart=!0,this.zeroSlopeAtEnd=!0}play(){return this._mixer._activateAction(this),this}stop(){return this._mixer._deactivateAction(this),this.reset()}reset(){return this.paused=!1,this.enabled=!0,this.time=0,this._loopCount=-1,this._startTime=null,this.stopFading().stopWarping()}isRunning(){return this.enabled&&!this.paused&&this.timeScale!==0&&this._startTime===null&&this._mixer._isActiveAction(this)}isScheduled(){return this._mixer._isActiveAction(this)}startAt(e){return this._startTime=e,this}setLoop(e,t){return this.loop=e,this.repetitions=t,this}setEffectiveWeight(e){return this.weight=e,this._effectiveWeight=this.enabled?e:0,this.stopFading()}getEffectiveWeight(){return this._effectiveWeight}fadeIn(e){return this._scheduleFading(e,0,1)}fadeOut(e){return this._scheduleFading(e,1,0)}crossFadeFrom(e,t,n=!1){if(e.fadeOut(t),this.fadeIn(t),n===!0){let i=this._clip.duration,s=e._clip.duration,o=s/i,a=i/s;e._restoreTimeScale=e.timeScale,this._restoreTimeScale=this.timeScale,e.warp(1,o,t),this.warp(a,1,t)}return this}crossFadeTo(e,t,n=!1){return e.crossFadeFrom(this,t,n)}stopFading(){let e=this._weightInterpolant;return e!==null&&(this._weightInterpolant=null,this._mixer._takeBackControlInterpolant(e)),this}setEffectiveTimeScale(e){return this.timeScale=e,this._effectiveTimeScale=this.paused?0:e,this.stopWarping()}getEffectiveTimeScale(){return this._effectiveTimeScale}setDuration(e){return this.timeScale=this._clip.duration/e,this.stopWarping()}syncWith(e){return this.time=e.time,this.timeScale=e.timeScale,this.stopWarping()}halt(e){return this.warp(this._effectiveTimeScale,0,e)}warp(e,t,n){let i=this._mixer,s=i.time,o=this.timeScale,a=this._timeScaleInterpolant;a===null&&(a=i._lendControlInterpolant(),this._timeScaleInterpolant=a);let l=a.parameterPositions,c=a.sampleValues;return l[0]=s,l[1]=s+n,c[0]=e/o,c[1]=t/o,this}stopWarping(){let e=this._timeScaleInterpolant;return e!==null&&(this._timeScaleInterpolant=null,this._mixer._takeBackControlInterpolant(e)),this._restoreTimeScale=null,this}getMixer(){return this._mixer}getClip(){return this._clip}getRoot(){return this._localRoot||this._mixer._root}_update(e,t,n,i){if(!this.enabled){this._updateWeight(e);return}let s=this._startTime;if(s!==null){let l=(e-s)*n;l<0||n===0?t=0:(this._startTime=null,t=n*l)}t*=this._updateTimeScale(e);let o=this._updateTime(t),a=this._updateWeight(e);if(a>0){let l=this._interpolants,c=this._propertyBindings;switch(this.blendMode){case iu:for(let h=0,u=l.length;h!==u;++h)l[h].evaluate(o),c[h].accumulateAdditive(a);break;case Ll:default:for(let 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this.min.x<=e.min.x&&e.max.x<=this.max.x&&this.min.y<=e.min.y&&e.max.y<=this.max.y}getParameter(e,t){return t.set((e.x-this.min.x)/(this.max.x-this.min.x),(e.y-this.min.y)/(this.max.y-this.min.y))}intersectsBox(e){return e.max.x>=this.min.x&&e.min.x<=this.max.x&&e.max.y>=this.min.y&&e.min.y<=this.max.y}clampPoint(e,t){return t.copy(e).clamp(this.min,this.max)}distanceToPoint(e){return this.clampPoint(e,gm).distanceTo(e)}intersect(e){return this.min.max(e.min),this.max.min(e.max),this.isEmpty()&&this.makeEmpty(),this}union(e){return this.min.min(e.min),this.max.max(e.max),this}translate(e){return this.min.add(e),this.max.add(e),this}equals(e){return e.min.equals(this.min)&&e.max.equals(this.max)}},_m=new R,wc=new R,Mr=new R,Sr=new R,td=new R,mx=new R,gx=new R,Sh=class{constructor(e=new R,t=new R){this.start=e,this.end=t}set(e,t){return this.start.copy(e),this.end.copy(t),this}copy(e){return this.start.copy(e.start),this.end.copy(e.end),this}getCenter(e){return 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_=Mr.dot(Sr),g=u*d-_*_;g!==0?s=He((_*f-p*d)/g,0,1):s=0,o=(_*s+f)/d,o<0?(o=0,s=He(-p/u,0,1)):o>1&&(o=1,s=He((_-p)/u,0,1))}}return t.copy(a).addScaledVector(Mr,s),n.copy(l).addScaledVector(Sr,o),t.distanceToSquared(n)}applyMatrix4(e){return this.start.applyMatrix4(e),this.end.applyMatrix4(e),this}equals(e){return e.start.equals(this.start)&&e.end.equals(this.end)}clone(){return new this.constructor().copy(this)}},xm=new R,bh=class extends st{constructor(e,t){super(),this.light=e,this.matrixAutoUpdate=!1,this.color=t,this.type="SpotLightHelper";let n=new Oe,i=[0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,-1,0,1,0,0,0,0,1,1,0,0,0,0,-1,1];for(let o=0,a=1,l=32;o<l;o++,a++){let c=o/l*Math.PI*2,h=a/l*Math.PI*2;i.push(Math.cos(c),Math.sin(c),1,Math.cos(h),Math.sin(h),1)}n.setAttribute("position",new fe(i,3));let s=new Rt({fog:!1,toneMapped:!1});this.cone=new Xt(n,s),this.add(this.cone),this.update()}dispose(){super.dispose(),this.cone.geometry.dispose(),this.cone.material.dispose()}update(){this.light.updateWorldMatrix(!0,!1),this.light.target.updateWorldMatrix(!0,!1),this.parent?(this.parent.updateWorldMatrix(!0),this.matrix.copy(this.parent.matrixWorld).invert().multiply(this.light.matrixWorld)):this.matrix.copy(this.light.matrixWorld),this.matrixWorldNeedsUpdate=!0;let e=this.light.distance?this.light.distance:1e3,t=e*Math.tan(this.light.angle);this.cone.scale.set(t,t,e),xm.setFromMatrixPosition(this.light.target.matrixWorld),this.cone.lookAt(xm),this.color!==void 0?this.cone.material.color.set(this.color):this.cone.material.color.copy(this.light.color)}},Ki=new R,Rc=new ze,nd=new ze,Th=class extends Xt{constructor(e){let t=wg(e),n=new Oe,i=[],s=[];for(let c=0;c<t.length;c++){let h=t[c];h.parent&&h.parent.isBone&&(i.push(0,0,0),i.push(0,0,0),s.push(0,0,0),s.push(0,0,0))}n.setAttribute("position",new fe(i,3)),n.setAttribute("color",new fe(s,3));let o=new Rt({vertexColors:!0,depthTest:!1,depthWrite:!1,toneMapped:!1,transparent:!0});super(n,o),this.isSkeletonHelper=!0,this.type="SkeletonHelper",this.root=e,this.bones=t,this.matrix=e.matrixWorld,this.matrixAutoUpdate=!1;let a=new ce(255),l=new ce(65280);this.setColors(a,l)}updateMatrixWorld(e){let t=this.bones,n=this.geometry,i=n.getAttribute("position");nd.copy(this.root.matrixWorld).invert();for(let s=0,o=0;s<t.length;s++){let a=t[s];a.parent&&a.parent.isBone&&(Rc.multiplyMatrices(nd,a.matrixWorld),Ki.setFromMatrixPosition(Rc),i.setXYZ(o,Ki.x,Ki.y,Ki.z),Rc.multiplyMatrices(nd,a.parent.matrixWorld),Ki.setFromMatrixPosition(Rc),i.setXYZ(o+1,Ki.x,Ki.y,Ki.z),o+=2)}n.getAttribute("position").needsUpdate=!0,super.updateMatrixWorld(e)}setColors(e,t){let i=this.geometry.getAttribute("color");for(let s=0;s<i.count;s+=2)i.setXYZ(s,e.r,e.g,e.b),i.setXYZ(s+1,t.r,t.g,t.b);return i.needsUpdate=!0,this}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}};function wg(r){let e=[];r.isBone===!0&&e.push(r);for(let t=0;t<r.children.length;t++)e.push(...wg(r.children[t]));return e}var Ah=class extends rt{constructor(e,t,n){let i=new Hr(t,4,2),s=new Kt({wireframe:!0,fog:!1,toneMapped:!1});super(i,s),this.light=e,this.color=n,this.type="PointLightHelper",this.matrix=this.light.matrixWorld,this.matrixAutoUpdate=!1,this.update()}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}update(){this.matrixWorldNeedsUpdate=!0,this.light.updateWorldMatrix(!0,!1),this.color!==void 0?this.material.color.set(this.color):this.material.color.copy(this.light.color)}},_x=new R,ym=new ce,vm=new ce,Eh=class extends st{constructor(e,t,n){super(),this.light=e,this.matrix=e.matrixWorld,this.matrixAutoUpdate=!1,this.color=n,this.type="HemisphereLightHelper";let i=new Gr(t);i.rotateY(Math.PI*.5),this.material=new Kt({wireframe:!0,fog:!1,toneMapped:!1}),this.color===void 0&&(this.material.vertexColors=!0);let s=i.getAttribute("position"),o=new Float32Array(s.count*3);i.setAttribute("color",new Qe(o,3)),this.add(new rt(i,this.material)),this.update()}dispose(){super.dispose(),this.children[0].geometry.dispose(),this.children[0].material.dispose()}update(){let e=this.children[0];if(this.color!==void 0)this.material.color.set(this.color);else{let t=e.geometry.getAttribute("color");ym.copy(this.light.color),vm.copy(this.light.groundColor);for(let n=0,i=t.count;n<i;n++){let s=n<i/2?ym:vm;t.setXYZ(n,s.r,s.g,s.b)}t.needsUpdate=!0}this.matrixWorldNeedsUpdate=!0,this.light.updateWorldMatrix(!0,!1),e.lookAt(_x.setFromMatrixPosition(this.light.matrixWorld).negate())}},wh=class extends Xt{constructor(e=10,t=10,n=4473924,i=8947848){n=new ce(n),i=new ce(i);let s=t/2,o=e/t,a=e/2,l=[],c=[];for(let d=0,f=0,p=-a;d<=t;d++,p+=o){l.push(-a,0,p,a,0,p),l.push(p,0,-a,p,0,a);let _=d===s?n:i;_.toArray(c,f),f+=3,_.toArray(c,f),f+=3,_.toArray(c,f),f+=3,_.toArray(c,f),f+=3}let h=new Oe;h.setAttribute("position",new fe(l,3)),h.setAttribute("color",new fe(c,3));let u=new Rt({vertexColors:!0,toneMapped:!1});super(h,u),this.type="GridHelper"}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}},Rh=class extends Xt{constructor(e=10,t=16,n=8,i=64,s=4473924,o=8947848){s=new ce(s),o=new ce(o);let a=[],l=[];if(t>1)for(let u=0;u<t;u++){let d=u/t*(Math.PI*2),f=Math.sin(d)*e,p=Math.cos(d)*e;a.push(0,0,0),a.push(f,0,p);let _=u&1?s:o;l.push(_.r,_.g,_.b),l.push(_.r,_.g,_.b)}for(let u=0;u<n;u++){let d=u&1?s:o,f=e-e/n*u;for(let p=0;p<i;p++){let _=p/i*(Math.PI*2),g=Math.sin(_)*f,m=Math.cos(_)*f;a.push(g,0,m),l.push(d.r,d.g,d.b),_=(p+1)/i*(Math.PI*2),g=Math.sin(_)*f,m=Math.cos(_)*f,a.push(g,0,m),l.push(d.r,d.g,d.b)}}let c=new Oe;c.setAttribute("position",new fe(a,3)),c.setAttribute("color",new fe(l,3));let h=new Rt({vertexColors:!0,toneMapped:!1});super(c,h),this.type="PolarGridHelper"}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}},Mm=new R,Cc=new R,Sm=new R,Ch=class extends st{constructor(e,t,n){super(),this.light=e,this.matrix=e.matrixWorld,this.matrixAutoUpdate=!1,this.color=n,this.type="DirectionalLightHelper",t===void 0&&(t=1);let i=new Oe;i.setAttribute("position",new fe([-t,t,0,t,t,0,t,-t,0,-t,-t,0,-t,t,0],3));let s=new Rt({fog:!1,toneMapped:!1});this.lightPlane=new En(i,s),this.add(this.lightPlane),i=new Oe,i.setAttribute("position",new fe([0,0,0,0,0,1],3)),this.targetLine=new En(i,s),this.add(this.targetLine),this.update()}dispose(){super.dispose(),this.lightPlane.geometry.dispose(),this.lightPlane.material.dispose(),this.targetLine.geometry.dispose(),this.targetLine.material.dispose()}update(){this.matrixWorldNeedsUpdate=!0,this.light.updateWorldMatrix(!0,!1),this.light.target.updateWorldMatrix(!0,!1),Mm.setFromMatrixPosition(this.light.matrixWorld),Cc.setFromMatrixPosition(this.light.target.matrixWorld),Sm.subVectors(Cc,Mm),this.lightPlane.lookAt(Cc),this.color!==void 0?(this.lightPlane.material.color.set(this.color),this.targetLine.material.color.set(this.color)):(this.lightPlane.material.color.copy(this.light.color),this.targetLine.material.color.copy(this.light.color)),this.targetLine.lookAt(Cc),this.targetLine.scale.z=Sm.length()}},Ic=new R,Pt=new Gs,Ih=class extends Xt{constructor(e){let t=new Oe,n=new Rt({color:16777215,vertexColors:!0,toneMapped:!1}),i=[],s=[],o={};a("n1","n2"),a("n2","n4"),a("n4","n3"),a("n3","n1"),a("f1","f2"),a("f2","f4"),a("f4","f3"),a("f3","f1"),a("n1","f1"),a("n2","f2"),a("n3","f3"),a("n4","f4"),a("p","n1"),a("p","n2"),a("p","n3"),a("p","n4"),a("u1","u2"),a("u2","u3"),a("u3","u1"),a("c","t"),a("p","c"),a("cn1","cn2"),a("cn3","cn4"),a("cf1","cf2"),a("cf3","cf4");function a(p,_){l(p),l(_)}function l(p){i.push(0,0,0),s.push(0,0,0),o[p]===void 0&&(o[p]=[]),o[p].push(i.length/3-1)}t.setAttribute("position",new fe(i,3)),t.setAttribute("color",new fe(s,3)),super(t,n),this.type="CameraHelper",this.camera=e,this.camera.updateProjectionMatrix&&this.camera.updateProjectionMatrix(),this.matrix=e.matrixWorld,this.matrixAutoUpdate=!1,this.pointMap=o,this.update();let c=new ce(16755200),h=new ce(16711680),u=new ce(43775),d=new ce(16777215),f=new ce(3355443);this.setColors(c,h,u,d,f)}setColors(e,t,n,i,s){let a=this.geometry.getAttribute("color");return a.setXYZ(0,e.r,e.g,e.b),a.setXYZ(1,e.r,e.g,e.b),a.setXYZ(2,e.r,e.g,e.b),a.setXYZ(3,e.r,e.g,e.b),a.setXYZ(4,e.r,e.g,e.b),a.setXYZ(5,e.r,e.g,e.b),a.setXYZ(6,e.r,e.g,e.b),a.setXYZ(7,e.r,e.g,e.b),a.setXYZ(8,e.r,e.g,e.b),a.setXYZ(9,e.r,e.g,e.b),a.setXYZ(10,e.r,e.g,e.b),a.setXYZ(11,e.r,e.g,e.b),a.setXYZ(12,e.r,e.g,e.b),a.setXYZ(13,e.r,e.g,e.b),a.setXYZ(14,e.r,e.g,e.b),a.setXYZ(15,e.r,e.g,e.b),a.setXYZ(16,e.r,e.g,e.b),a.setXYZ(17,e.r,e.g,e.b),a.setXYZ(18,e.r,e.g,e.b),a.setXYZ(19,e.r,e.g,e.b),a.setXYZ(20,e.r,e.g,e.b),a.setXYZ(21,e.r,e.g,e.b),a.setXYZ(22,e.r,e.g,e.b),a.setXYZ(23,e.r,e.g,e.b),a.setXYZ(24,t.r,t.g,t.b),a.setXYZ(25,t.r,t.g,t.b),a.setXYZ(26,t.r,t.g,t.b),a.setXYZ(27,t.r,t.g,t.b),a.setXYZ(28,t.r,t.g,t.b),a.setXYZ(29,t.r,t.g,t.b),a.setXYZ(30,t.r,t.g,t.b),a.setXYZ(31,t.r,t.g,t.b),a.setXYZ(32,n.r,n.g,n.b),a.setXYZ(33,n.r,n.g,n.b),a.setXYZ(34,n.r,n.g,n.b),a.setXYZ(35,n.r,n.g,n.b),a.setXYZ(36,n.r,n.g,n.b),a.setXYZ(37,n.r,n.g,n.b),a.setXYZ(38,i.r,i.g,i.b),a.setXYZ(39,i.r,i.g,i.b),a.setXYZ(40,s.r,s.g,s.b),a.setXYZ(41,s.r,s.g,s.b),a.setXYZ(42,s.r,s.g,s.b),a.setXYZ(43,s.r,s.g,s.b),a.setXYZ(44,s.r,s.g,s.b),a.setXYZ(45,s.r,s.g,s.b),a.setXYZ(46,s.r,s.g,s.b),a.setXYZ(47,s.r,s.g,s.b),a.setXYZ(48,s.r,s.g,s.b),a.setXYZ(49,s.r,s.g,s.b),a.needsUpdate=!0,this}update(){let e=this.geometry,t=this.pointMap,n=1,i=1,s,o;if(Pt.projectionMatrixInverse.copy(this.camera.projectionMatrixInverse),this.camera.reversedDepth===!0)s=1,o=0;else if(this.camera.coordinateSystem===_n)s=-1,o=1;else if(this.camera.coordinateSystem===ts)s=0,o=1;else throw new Error("THREE.CameraHelper.update(): Invalid coordinate system: "+this.camera.coordinateSystem);Ut("c",t,e,Pt,0,0,s),Ut("t",t,e,Pt,0,0,o),Ut("n1",t,e,Pt,-n,-i,s),Ut("n2",t,e,Pt,n,-i,s),Ut("n3",t,e,Pt,-n,i,s),Ut("n4",t,e,Pt,n,i,s),Ut("f1",t,e,Pt,-n,-i,o),Ut("f2",t,e,Pt,n,-i,o),Ut("f3",t,e,Pt,-n,i,o),Ut("f4",t,e,Pt,n,i,o),Ut("u1",t,e,Pt,n*.7,i*1.1,s),Ut("u2",t,e,Pt,-n*.7,i*1.1,s),Ut("u3",t,e,Pt,0,i*2,s),Ut("cf1",t,e,Pt,-n,0,o),Ut("cf2",t,e,Pt,n,0,o),Ut("cf3",t,e,Pt,0,-i,o),Ut("cf4",t,e,Pt,0,i,o),Ut("cn1",t,e,Pt,-n,0,s),Ut("cn2",t,e,Pt,n,0,s),Ut("cn3",t,e,Pt,0,-i,s),Ut("cn4",t,e,Pt,0,i,s),e.getAttribute("position").needsUpdate=!0}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}};function Ut(r,e,t,n,i,s,o){Ic.set(i,s,o).unproject(n);let a=e[r];if(a!==void 0){let l=t.getAttribute("position");for(let c=0,h=a.length;c<h;c++)l.setXYZ(a[c],Ic.x,Ic.y,Ic.z)}}var Pc=new Ft,Ph=class extends Xt{constructor(e,t=16776960){let n=new Uint16Array([0,1,1,2,2,3,3,0,4,5,5,6,6,7,7,4,0,4,1,5,2,6,3,7]),i=new Float32Array(24),s=new Oe;s.setIndex(new Qe(n,1)),s.setAttribute("position",new Qe(i,3)),super(s,new Rt({color:t,toneMapped:!1})),this.object=e,this.type="BoxHelper",this.matrixAutoUpdate=!1,this.update()}update(){if(this.object!==void 0&&Pc.setFromObject(this.object),Pc.isEmpty())return;let e=Pc.min,t=Pc.max,n=this.geometry.attributes.position,i=n.array;i[0]=t.x,i[1]=t.y,i[2]=t.z,i[3]=e.x,i[4]=t.y,i[5]=t.z,i[6]=e.x,i[7]=e.y,i[8]=t.z,i[9]=t.x,i[10]=e.y,i[11]=t.z,i[12]=t.x,i[13]=t.y,i[14]=e.z,i[15]=e.x,i[16]=t.y,i[17]=e.z,i[18]=e.x,i[19]=e.y,i[20]=e.z,i[21]=t.x,i[22]=e.y,i[23]=e.z,n.needsUpdate=!0,this.geometry.computeBoundingSphere()}setFromObject(e){return this.object=e,this.update(),this}copy(e,t){return super.copy(e,t),this.object=e.object,this}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}},Lh=class extends Xt{constructor(e,t=16776960){let n=new Uint16Array([0,1,1,2,2,3,3,0,4,5,5,6,6,7,7,4,0,4,1,5,2,6,3,7]),i=[1,1,1,-1,1,1,-1,-1,1,1,-1,1,1,1,-1,-1,1,-1,-1,-1,-1,1,-1,-1],s=new Oe;s.setIndex(new Qe(n,1)),s.setAttribute("position",new fe(i,3)),super(s,new Rt({color:t,toneMapped:!1})),this.box=e,this.type="Box3Helper",this.geometry.computeBoundingSphere()}updateMatrixWorld(e){let t=this.box;t.isEmpty()||(t.getCenter(this.position),t.getSize(this.scale),this.scale.multiplyScalar(.5),super.updateMatrixWorld(e))}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}},Nh=class extends En{constructor(e,t=1,n=16776960){let i=n,s=[1,-1,0,-1,1,0,-1,-1,0,1,1,0,-1,1,0,-1,-1,0,1,-1,0,1,1,0],o=new Oe;o.setAttribute("position",new fe(s,3)),o.computeBoundingSphere(),super(o,new Rt({color:i,toneMapped:!1})),this.type="PlaneHelper",this.plane=e,this.size=t;let a=[1,1,0,-1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,-1,0],l=new Oe;l.setAttribute("position",new fe(a,3)),l.computeBoundingSphere(),this.add(new rt(l,new Kt({color:i,opacity:.2,transparent:!0,depthWrite:!1,toneMapped:!1})))}updateMatrixWorld(e){this.position.set(0,0,0),this.scale.set(.5*this.size,.5*this.size,1),this.lookAt(this.plane.normal),this.translateZ(-this.plane.constant),super.updateMatrixWorld(e)}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose(),this.children[0].geometry.dispose(),this.children[0].material.dispose()}},bm=new R,Lc,id,Dh=class extends st{constructor(e=new R(0,0,1),t=new R(0,0,0),n=1,i=16776960,s=n*.2,o=s*.2){super(),this.type="ArrowHelper",Lc===void 0&&(Lc=new Oe,Lc.setAttribute("position",new fe([0,0,0,0,1,0],3)),id=new Ur(.5,1,5,1),id.translate(0,-.5,0)),this.position.copy(t),this.line=new En(Lc,new Rt({color:i,toneMapped:!1})),this.line.matrixAutoUpdate=!1,this.add(this.line),this.cone=new rt(id,new Kt({color:i,toneMapped:!1})),this.cone.matrixAutoUpdate=!1,this.add(this.cone),this.setDirection(e),this.setLength(n,s,o)}setDirection(e){if(e.y>.99999)this.quaternion.set(0,0,0,1);else if(e.y<-.99999)this.quaternion.set(1,0,0,0);else{bm.set(e.z,0,-e.x).normalize();let t=Math.acos(e.y);this.quaternion.setFromAxisAngle(bm,t)}}setLength(e,t=e*.2,n=t*.2){this.line.scale.set(1,Math.max(1e-4,e-t),1),this.line.updateMatrix(),this.cone.scale.set(n,t,n),this.cone.position.y=e,this.cone.updateMatrix()}setColor(e){this.line.material.color.set(e),this.cone.material.color.set(e)}copy(e){return super.copy(e,!1),this.line.copy(e.line),this.cone.copy(e.cone),this}dispose(){super.dispose(),this.line.geometry.dispose(),this.line.material.dispose(),this.cone.geometry.dispose(),this.cone.material.dispose()}},Uh=class extends Xt{constructor(e=1){let t=[0,0,0,e,0,0,0,0,0,0,e,0,0,0,0,0,0,e],n=[1,0,0,1,.6,0,0,1,0,.6,1,0,0,0,1,0,.6,1],i=new Oe;i.setAttribute("position",new fe(t,3)),i.setAttribute("color",new fe(n,3));let s=new Rt({vertexColors:!0,toneMapped:!1});super(i,s),this.type="AxesHelper"}setColors(e,t,n){let i=new ce,s=this.geometry.attributes.color.array;return i.set(e),i.toArray(s,0),i.toArray(s,3),i.set(t),i.toArray(s,6),i.toArray(s,9),i.set(n),i.toArray(s,12),i.toArray(s,15),this.geometry.attributes.color.needsUpdate=!0,this}dispose(){super.dispose(),this.geometry.dispose(),this.material.dispose()}},Fh=class{constructor(){this.type="ShapePath",this.color=new ce,this.subPaths=[],this.currentPath=null,this.userData={}}moveTo(e,t){return this.currentPath=new rs,this.subPaths.push(this.currentPath),this.currentPath.moveTo(e,t),this}lineTo(e,t){return this.currentPath.lineTo(e,t),this}quadraticCurveTo(e,t,n,i){return this.currentPath.quadraticCurveTo(e,t,n,i),this}bezierCurveTo(e,t,n,i,s,o){return this.currentPath.bezierCurveTo(e,t,n,i,s,o),this}splineThru(e){return this.currentPath.splineThru(e),this}toShapes(){function e(l,c){let h=!1,u=c.length;for(let d=0,f=u-1;d<u;f=d++){let p=c[d],_=c[f];p.y>l.y!=_.y>l.y&&l.x<(_.x-p.x)*(l.y-p.y)/(_.y-p.y)+p.x&&(h=!h)}return h}function t(l,c){let h=c.getCenter(new J);if(e(h,l))return h;let u=h.y,d=[],f=l.length;for(let p=0;p<f;p++){let _=l[p],g=l[(p+1)%f];if(_.y>u!=g.y>u){let m=_.x+(u-_.y)*(g.x-_.x)/(g.y-_.y);d.push(m)}}return d.length>1&&(d.sort((p,_)=>p-_),h.x=(d[0]+d[1])/2),h}let n=this.userData.style&&this.userData.style.fillRule||"nonzero";n!=="nonzero"&&n!=="evenodd"&&(de('Fill-rule "'+n+'" is not supported, falling back to "nonzero".'),n="nonzero");let i=n==="nonzero"?(l=>l!==0):(l=>(l&1)!==0),s=[];for(let l of this.subPaths){let c=l.getPoints();if(c.length<3)continue;let h=Nn.area(c);if(h===0)continue;let u=new Za;for(let d=0;d<c.length;d++)u.expandByPoint(c[d]);s.push({subPath:l,points:c,boundingBox:u,interiorPoint:t(c,u),absArea:Math.abs(h),winding:h<0?-1:1,container:null,exclude:!1,role:null})}s.sort((l,c)=>c.absArea-l.absArea);for(let l=0;l<s.length;l++){let c=s[l],h=0;for(let u=l-1;u>=0;u--){let d=s[u];if(d.boundingBox.containsBox(c.boundingBox)&&e(c.interiorPoint,d.points)){c.container=d.exclude?d.container:d,h=d.winding,c.winding+=h;break}}i(c.winding)===i(h)&&(c.exclude=!0)}for(let l of s)l.exclude||(l.role=l.container===null||l.container.role==="hole"?"outer":"hole");let o=[],a=new Map;for(let l of s){if(l.exclude||l.role!=="outer")continue;let c=new os;c.curves=l.subPath.curves,o.push(c),a.set(l,c)}for(let l of s){if(l.exclude||l.role!=="hole")continue;let c=a.get(l.container);if(!c)continue;let h=new rs;h.curves=l.subPath.curves,c.holes.push(h)}return o}},eo=class extends xn{constructor(e,t=null){super(),this.object=e,this.domElement=t,this.enabled=!0,this.state=-1,this.keys={},this.mouseButtons={LEFT:null,MIDDLE:null,RIGHT:null},this.touches={ONE:null,TWO:null}}connect(e){this.domElement!==null&&this.disconnect(),this.domElement=e}disconnect(){}dispose(){}update(){}};function xx(r,e){let t=r.image&&r.image.width?r.image.width/r.image.height:1;return t>e?(r.repeat.x=1,r.repeat.y=t/e,r.offset.x=0,r.offset.y=(1-r.repeat.y)/2):(r.repeat.x=e/t,r.repeat.y=1,r.offset.x=(1-r.repeat.x)/2,r.offset.y=0),r}function yx(r,e){let t=r.image&&r.image.width?r.image.width/r.image.height:1;return t>e?(r.repeat.x=e/t,r.repeat.y=1,r.offset.x=(1-r.repeat.x)/2,r.offset.y=0):(r.repeat.x=1,r.repeat.y=t/e,r.offset.x=0,r.offset.y=(1-r.repeat.y)/2),r}function vx(r){return r.repeat.x=1,r.repeat.y=1,r.offset.x=0,r.offset.y=0,r}function ou(r,e,t,n){let i=Mx(n);switch(t){case tu:return r*e;case Qa:return r*e/i.components*i.byteLength;case oo:return r*e/i.components*i.byteLength;case ki:return r*e*2/i.components*i.byteLength;case el:return r*e*2/i.components*i.byteLength;case nu:return r*e*3/i.components*i.byteLength;case tn:return r*e*4/i.components*i.byteLength;case tl:return r*e*4/i.components*i.byteLength;case ao:case lo:return Math.floor((r+3)/4)*Math.floor((e+3)/4)*8;case co:case ho:return Math.floor((r+3)/4)*Math.floor((e+3)/4)*16;case il:case rl:return Math.max(r,16)*Math.max(e,8)/4;case nl:case sl:return Math.max(r,8)*Math.max(e,8)/2;case ol:case al:case cl:case hl:return Math.floor((r+3)/4)*Math.floor((e+3)/4)*8;case ll:case uo:case ul:return Math.floor((r+3)/4)*Math.floor((e+3)/4)*16;case dl:return Math.floor((r+3)/4)*Math.floor((e+3)/4)*16;case fl:return Math.floor((r+4)/5)*Math.floor((e+3)/4)*16;case pl:return Math.floor((r+4)/5)*Math.floor((e+4)/5)*16;case ml:return Math.floor((r+5)/6)*Math.floor((e+4)/5)*16;case gl:return Math.floor((r+5)/6)*Math.floor((e+5)/6)*16;case _l:return Math.floor((r+7)/8)*Math.floor((e+4)/5)*16;case xl:return Math.floor((r+7)/8)*Math.floor((e+5)/6)*16;case yl:return Math.floor((r+7)/8)*Math.floor((e+7)/8)*16;case vl:return Math.floor((r+9)/10)*Math.floor((e+4)/5)*16;case Ml:return Math.floor((r+9)/10)*Math.floor((e+5)/6)*16;case Sl:return Math.floor((r+9)/10)*Math.floor((e+7)/8)*16;case bl:return Math.floor((r+9)/10)*Math.floor((e+9)/10)*16;case Tl:return Math.floor((r+11)/12)*Math.floor((e+9)/10)*16;case Al:return Math.floor((r+11)/12)*Math.floor((e+11)/12)*16;case El:case wl:case Rl:return Math.ceil(r/4)*Math.ceil(e/4)*16;case Cl:case Il:return Math.ceil(r/4)*Math.ceil(e/4)*8;case fo:case Pl:return Math.ceil(r/4)*Math.ceil(e/4)*16}throw new Error(`Unable to determine texture byte length for ${t} format.`)}function Mx(r){switch(r){case fn:case jh:return{byteLength:1,components:1};case Ks:case $h:case Bn:return{byteLength:2,components:1};case ja:case $a:return{byteLength:2,components:4};case Cn:case Ja:case en:return{byteLength:4,components:1};case Qh:case eu:return{byteLength:4,components:3}}throw new Error(`THREE.TextureUtils: Unknown texture type ${r}.`)}var Oh=class{static contain(e,t){return xx(e,t)}static cover(e,t){return yx(e,t)}static fill(e){return vx(e)}static getByteLength(e,t,n,i){return ou(e,t,n,i)}};typeof __THREE_DEVTOOLS__<"u"&&__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("register",{detail:{revision:"186"}}));typeof window<"u"&&(window.__THREE__?de("WARNING: Multiple instances of Three.js being imported."):window.__THREE__="186");function Kg(){let r=null,e=!1,t=null,n=null;function i(s,o){n=r.requestAnimationFrame(i),t(s,o)}return{start:function(){e!==!0&&t!==null&&r!==null&&(n=r.requestAnimationFrame(i),e=!0)},stop:function(){r!==null&&r.cancelAnimationFrame(n),e=!1},setAnimationLoop:function(s){t=s},setContext:function(s){r=s}}}function Sx(r){let e=new WeakMap;function t(a,l){let c=a.array,h=a.usage,u=c.byteLength,d=r.createBuffer();r.bindBuffer(l,d),r.bufferData(l,c,h),a.onUploadCallback();let f;if(c instanceof Float32Array)f=r.FLOAT;else if(typeof Float16Array<"u"&&c instanceof Float16Array)f=r.HALF_FLOAT;else if(c instanceof Uint16Array)a.isFloat16BufferAttribute?f=r.HALF_FLOAT:f=r.UNSIGNED_SHORT;else if(c instanceof Int16Array)f=r.SHORT;else if(c instanceof Uint32Array)f=r.UNSIGNED_INT;else if(c instanceof Int32Array)f=r.INT;else if(c instanceof Int8Array)f=r.BYTE;else if(c instanceof Uint8Array)f=r.UNSIGNED_BYTE;else if(c instanceof Uint8ClampedArray)f=r.UNSIGNED_BYTE;else throw new Error("THREE.WebGLAttributes: Unsupported buffer data format: "+c);return{buffer:d,type:f,bytesPerElement:c.BYTES_PER_ELEMENT,version:a.version,size:u}}function n(a,l,c){let h=l.array,u=l.updateRanges;if(r.bindBuffer(c,a),u.length===0)r.bufferSubData(c,0,h);else{u.sort((f,p)=>f.start-p.start);let d=0;for(let f=1;f<u.length;f++){let p=u[d],_=u[f];_.start<=p.start+p.count+1?p.count=Math.max(p.count,_.start+_.count-p.start):(++d,u[d]=_)}u.length=d+1;for(let f=0,p=u.length;f<p;f++){let _=u[f];r.bufferSubData(c,_.start*h.BYTES_PER_ELEMENT,h,_.start,_.count)}l.clearUpdateRanges()}l.onUploadCallback()}function i(a){return a.isInterleavedBufferAttribute&&(a=a.data),e.get(a)}function s(a){a.isInterleavedBufferAttribute&&(a=a.data);let l=e.get(a);l&&(r.deleteBuffer(l.buffer),e.delete(a))}function o(a,l){if(a.isInterleavedBufferAttribute&&(a=a.data),a.isGLBufferAttribute){let h=e.get(a);(!h||h.version<a.version)&&e.set(a,{buffer:a.buffer,type:a.type,bytesPerElement:a.elementSize,version:a.version});return}let c=e.get(a);if(c===void 0)e.set(a,t(a,l));else if(c.version<a.version){if(c.size!==a.array.byteLength)throw new Error("THREE.WebGLAttributes: The size of the buffer attribute's array buffer does not match the original size. Resizing buffer attributes is not supported.");n(c.buffer,a,l),c.version=a.version}}return{get:i,remove:s,update:o}}var bx=`#ifdef USE_ALPHAHASH
+	if ( diffuseColor.a < getAlphaHashThreshold( vPosition ) ) discard;
+#endif`,Tx=`#ifdef USE_ALPHAHASH
+	const float ALPHA_HASH_SCALE = 0.05;
+	float hash2D( vec2 value ) {
+		return fract( 1.0e4 * sin( 17.0 * value.x + 0.1 * value.y ) * ( 0.1 + abs( sin( 13.0 * value.y + value.x ) ) ) );
+	}
+	float hash3D( vec3 value ) {
+		return hash2D( vec2( hash2D( value.xy ), value.z ) );
+	}
+	float getAlphaHashThreshold( vec3 position ) {
+		float maxDeriv = max(
+			length( dFdx( position.xyz ) ),
+			length( dFdy( position.xyz ) )
+		);
+		float pixScale = 1.0 / ( ALPHA_HASH_SCALE * maxDeriv );
+		vec2 pixScales = vec2(
+			exp2( floor( log2( pixScale ) ) ),
+			exp2( ceil( log2( pixScale ) ) )
+		);
+		vec2 alpha = vec2(
+			hash3D( floor( pixScales.x * position.xyz ) ),
+			hash3D( floor( pixScales.y * position.xyz ) )
+		);
+		float lerpFactor = fract( log2( pixScale ) );
+		float x = ( 1.0 - lerpFactor ) * alpha.x + lerpFactor * alpha.y;
+		float a = min( lerpFactor, 1.0 - lerpFactor );
+		vec3 cases = vec3(
+			x * x / ( 2.0 * a * ( 1.0 - a ) ),
+			( x - 0.5 * a ) / ( 1.0 - a ),
+			1.0 - ( ( 1.0 - x ) * ( 1.0 - x ) / ( 2.0 * a * ( 1.0 - a ) ) )
+		);
+		float threshold = ( x < ( 1.0 - a ) )
+			? ( ( x < a ) ? cases.x : cases.y )
+			: cases.z;
+		return clamp( threshold , 1.0e-6, 1.0 );
+	}
+#endif`,Ax=`#ifdef USE_ALPHAMAP
+	diffuseColor.a *= texture2D( alphaMap, vAlphaMapUv ).g;
+#endif`,Ex=`#ifdef USE_ALPHAMAP
+	uniform sampler2D alphaMap;
+#endif`,wx=`#ifdef USE_ALPHATEST
+	#ifdef ALPHA_TO_COVERAGE
+	diffuseColor.a = smoothstep( alphaTest, alphaTest + fwidth( diffuseColor.a ), diffuseColor.a );
+	if ( diffuseColor.a == 0.0 ) discard;
+	#else
+	if ( diffuseColor.a < alphaTest ) discard;
+	#endif
+#endif`,Rx=`#ifdef USE_ALPHATEST
+	uniform float alphaTest;
+#endif`,Cx=`#ifdef USE_AOMAP
+	float ambientOcclusion = ( texture2D( aoMap, vAoMapUv ).r - 1.0 ) * aoMapIntensity + 1.0;
+	reflectedLight.indirectDiffuse *= ambientOcclusion;
+	#if defined( USE_CLEARCOAT ) 
+		clearcoatSpecularIndirect *= ambientOcclusion;
+	#endif
+	#if defined( USE_SHEEN ) 
+		sheenSpecularIndirect *= ambientOcclusion;
+	#endif
+	#if defined( USE_ENVMAP ) && defined( STANDARD )
+		float dotNV = saturate( dot( geometryNormal, geometryViewDir ) );
+		reflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );
+	#endif
+#endif`,Ix=`#ifdef USE_AOMAP
+	uniform sampler2D aoMap;
+	uniform float aoMapIntensity;
+#endif`,Px=`#ifdef USE_BATCHING
+	#if ! defined( GL_ANGLE_multi_draw )
+	#define gl_DrawID _gl_DrawID
+	uniform int _gl_DrawID;
+	#endif
+	uniform highp sampler2D batchingTexture;
+	uniform highp usampler2D batchingIdTexture;
+	mat4 getBatchingMatrix( const in float i ) {
+		int size = textureSize( batchingTexture, 0 ).x;
+		int j = int( i ) * 4;
+		int x = j % size;
+		int y = j / size;
+		vec4 v1 = texelFetch( batchingTexture, ivec2( x, y ), 0 );
+		vec4 v2 = texelFetch( batchingTexture, ivec2( x + 1, y ), 0 );
+		vec4 v3 = texelFetch( batchingTexture, ivec2( x + 2, y ), 0 );
+		vec4 v4 = texelFetch( batchingTexture, ivec2( x + 3, y ), 0 );
+		return mat4( v1, v2, v3, v4 );
+	}
+	float getIndirectIndex( const in int i ) {
+		int size = textureSize( batchingIdTexture, 0 ).x;
+		int x = i % size;
+		int y = i / size;
+		return float( texelFetch( batchingIdTexture, ivec2( x, y ), 0 ).r );
+	}
+#endif
+#ifdef USE_BATCHING_COLOR
+	uniform sampler2D batchingColorTexture;
+	vec4 getBatchingColor( const in float i ) {
+		int size = textureSize( batchingColorTexture, 0 ).x;
+		int j = int( i );
+		int x = j % size;
+		int y = j / size;
+		return texelFetch( batchingColorTexture, ivec2( x, y ), 0 );
+	}
+#endif`,Lx=`#ifdef USE_BATCHING
+	mat4 batchingMatrix = getBatchingMatrix( getIndirectIndex( gl_DrawID ) );
+#endif`,Nx=`vec3 transformed = vec3( position );
+#ifdef USE_ALPHAHASH
+	vPosition = vec3( position );
+#endif`,Dx=`vec3 objectNormal = vec3( normal );
+#ifdef USE_TANGENT
+	vec3 objectTangent = vec3( tangent.xyz );
+#endif`,Ux=`float G_BlinnPhong_Implicit( ) {
+	return 0.25;
+}
+float D_BlinnPhong( const in float shininess, const in float dotNH ) {
+	return RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );
+}
+vec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {
+	vec3 halfDir = normalize( lightDir + viewDir );
+	float dotNH = saturate( dot( normal, halfDir ) );
+	float dotVH = saturate( dot( viewDir, halfDir ) );
+	vec3 F = F_Schlick( specularColor, 1.0, dotVH );
+	float G = G_BlinnPhong_Implicit( );
+	float D = D_BlinnPhong( shininess, dotNH );
+	return F * ( G * D );
+} // validated`,Fx=`#ifdef USE_IRIDESCENCE
+	const mat3 XYZ_TO_REC709 = mat3(
+		 3.2404542, -0.9692660,  0.0556434,
+		-1.5371385,  1.8760108, -0.2040259,
+		-0.4985314,  0.0415560,  1.0572252
+	);
+	vec3 Fresnel0ToIor( vec3 fresnel0 ) {
+		vec3 sqrtF0 = sqrt( fresnel0 );
+		return ( vec3( 1.0 ) + sqrtF0 ) / ( vec3( 1.0 ) - sqrtF0 );
+	}
+	vec3 IorToFresnel0( vec3 transmittedIor, float incidentIor ) {
+		return pow2( ( transmittedIor - vec3( incidentIor ) ) / ( transmittedIor + vec3( incidentIor ) ) );
+	}
+	float IorToFresnel0( float transmittedIor, float incidentIor ) {
+		return pow2( ( transmittedIor - incidentIor ) / ( transmittedIor + incidentIor ));
+	}
+	vec3 evalSensitivity( float OPD, vec3 shift ) {
+		float phase = 2.0 * PI * OPD * 1.0e-9;
+		vec3 val = vec3( 5.4856e-13, 4.4201e-13, 5.2481e-13 );
+		vec3 pos = vec3( 1.6810e+06, 1.7953e+06, 2.2084e+06 );
+		vec3 var = vec3( 4.3278e+09, 9.3046e+09, 6.6121e+09 );
+		vec3 xyz = val * sqrt( 2.0 * PI * var ) * cos( pos * phase + shift ) * exp( - pow2( phase ) * var );
+		xyz.x += 9.7470e-14 * sqrt( 2.0 * PI * 4.5282e+09 ) * cos( 2.2399e+06 * phase + shift[ 0 ] ) * exp( - 4.5282e+09 * pow2( phase ) );
+		xyz /= 1.0685e-7;
+		vec3 rgb = XYZ_TO_REC709 * xyz;
+		return rgb;
+	}
+	vec3 evalIridescence( float outsideIOR, float eta2, float cosTheta1, float thinFilmThickness, vec3 baseF0 ) {
+		vec3 I;
+		float iridescenceIOR = mix( outsideIOR, eta2, smoothstep( 0.0, 0.03, thinFilmThickness ) );
+		float sinTheta2Sq = pow2( outsideIOR / iridescenceIOR ) * ( 1.0 - pow2( cosTheta1 ) );
+		float cosTheta2Sq = 1.0 - sinTheta2Sq;
+		if ( cosTheta2Sq < 0.0 ) {
+			return vec3( 1.0 );
+		}
+		float cosTheta2 = sqrt( cosTheta2Sq );
+		float R0 = IorToFresnel0( iridescenceIOR, outsideIOR );
+		float R12 = F_Schlick( R0, 1.0, cosTheta1 );
+		float T121 = 1.0 - R12;
+		float phi12 = 0.0;
+		if ( iridescenceIOR < outsideIOR ) phi12 = PI;
+		float phi21 = PI - phi12;
+		vec3 baseIOR = Fresnel0ToIor( clamp( baseF0, 0.0, 0.9999 ) );		vec3 R1 = IorToFresnel0( baseIOR, iridescenceIOR );
+		vec3 R23 = F_Schlick( R1, 1.0, cosTheta2 );
+		vec3 phi23 = vec3( 0.0 );
+		if ( baseIOR[ 0 ] < iridescenceIOR ) phi23[ 0 ] = PI;
+		if ( baseIOR[ 1 ] < iridescenceIOR ) phi23[ 1 ] = PI;
+		if ( baseIOR[ 2 ] < iridescenceIOR ) phi23[ 2 ] = PI;
+		float OPD = 2.0 * iridescenceIOR * thinFilmThickness * cosTheta2;
+		vec3 phi = vec3( phi21 ) + phi23;
+		vec3 R123 = clamp( R12 * R23, 1e-5, 0.9999 );
+		vec3 r123 = sqrt( R123 );
+		vec3 Rs = pow2( T121 ) * R23 / ( vec3( 1.0 ) - R123 );
+		vec3 C0 = R12 + Rs;
+		I = C0;
+		vec3 Cm = Rs - T121;
+		for ( int m = 1; m <= 2; ++ m ) {
+			Cm *= r123;
+			vec3 Sm = 2.0 * evalSensitivity( float( m ) * OPD, float( m ) * phi );
+			I += Cm * Sm;
+		}
+		return max( I, vec3( 0.0 ) );
+	}
+#endif`,Ox=`#ifdef USE_BUMPMAP
+	uniform sampler2D bumpMap;
+	uniform float bumpScale;
+	vec2 dHdxy_fwd() {
+		vec2 dSTdx = dFdx( vBumpMapUv );
+		vec2 dSTdy = dFdy( vBumpMapUv );
+		float Hll = bumpScale * texture2D( bumpMap, vBumpMapUv ).x;
+		float dBx = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdx ).x - Hll;
+		float dBy = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdy ).x - Hll;
+		return vec2( dBx, dBy );
+	}
+	vec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {
+		vec3 vSigmaX = normalize( dFdx( surf_pos.xyz ) );
+		vec3 vSigmaY = normalize( dFdy( surf_pos.xyz ) );
+		vec3 vN = surf_norm;
+		vec3 R1 = cross( vSigmaY, vN );
+		vec3 R2 = cross( vN, vSigmaX );
+		float fDet = dot( vSigmaX, R1 ) * faceDirection;
+		vec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );
+		return normalize( abs( fDet ) * surf_norm - vGrad );
+	}
+#endif`,Bx=`#if NUM_CLIPPING_PLANES > 0
+	vec4 plane;
+	#ifdef ALPHA_TO_COVERAGE
+		float distanceToPlane, distanceGradient;
+		float clipOpacity = 1.0;
+		#pragma unroll_loop_start
+		for ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {
+			plane = clippingPlanes[ i ];
+			distanceToPlane = - dot( vClipPosition, plane.xyz ) + plane.w;
+			distanceGradient = fwidth( distanceToPlane ) / 2.0;
+			clipOpacity *= smoothstep( - distanceGradient, distanceGradient, distanceToPlane );
+			if ( clipOpacity == 0.0 ) discard;
+		}
+		#pragma unroll_loop_end
+		#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES
+			float unionClipOpacity = 1.0;
+			#pragma unroll_loop_start
+			for ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {
+				plane = clippingPlanes[ i ];
+				distanceToPlane = - dot( vClipPosition, plane.xyz ) + plane.w;
+				distanceGradient = fwidth( distanceToPlane ) / 2.0;
+				unionClipOpacity *= 1.0 - smoothstep( - distanceGradient, distanceGradient, distanceToPlane );
+			}
+			#pragma unroll_loop_end
+			clipOpacity *= 1.0 - unionClipOpacity;
+		#endif
+		diffuseColor.a *= clipOpacity;
+		if ( diffuseColor.a == 0.0 ) discard;
+	#else
+		#pragma unroll_loop_start
+		for ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {
+			plane = clippingPlanes[ i ];
+			if ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;
+		}
+		#pragma unroll_loop_end
+		#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES
+			bool clipped = true;
+			#pragma unroll_loop_start
+			for ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {
+				plane = clippingPlanes[ i ];
+				clipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;
+			}
+			#pragma unroll_loop_end
+			if ( clipped ) discard;
+		#endif
+	#endif
+#endif`,zx=`#if NUM_CLIPPING_PLANES > 0
+	varying vec3 vClipPosition;
+	uniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];
+#endif`,kx=`#if NUM_CLIPPING_PLANES > 0
+	varying vec3 vClipPosition;
+#endif`,Vx=`#if NUM_CLIPPING_PLANES > 0
+	vClipPosition = - mvPosition.xyz;
+#endif`,Gx=`#if defined( USE_COLOR ) || defined( USE_COLOR_ALPHA )
+	diffuseColor *= vColor;
+#endif`,Hx=`#if defined( USE_COLOR ) || defined( USE_COLOR_ALPHA )
+	varying vec4 vColor;
+#endif`,Wx=`#if defined( USE_COLOR ) || defined( USE_COLOR_ALPHA ) || defined( USE_INSTANCING_COLOR ) || defined( USE_BATCHING_COLOR )
+	varying vec4 vColor;
+#endif`,Xx=`#if defined( USE_COLOR ) || defined( USE_COLOR_ALPHA ) || defined( USE_INSTANCING_COLOR ) || defined( USE_BATCHING_COLOR )
+	vColor = vec4( 1.0 );
+#endif
+#ifdef USE_COLOR_ALPHA
+	vColor *= color;
+#elif defined( USE_COLOR )
+	vColor.rgb *= color;
+#endif
+#ifdef USE_INSTANCING_COLOR
+	vColor.rgb *= instanceColor.rgb;
+#endif
+#ifdef USE_BATCHING_COLOR
+	vColor *= getBatchingColor( getIndirectIndex( gl_DrawID ) );
+#endif`,qx=`#define PI 3.141592653589793
+#define PI2 6.283185307179586
+#define PI_HALF 1.5707963267948966
+#define RECIPROCAL_PI 0.3183098861837907
+#define RECIPROCAL_PI2 0.15915494309189535
+#define EPSILON 1e-6
+#ifndef saturate
+#define saturate( a ) clamp( a, 0.0, 1.0 )
+#endif
+#define whiteComplement( a ) ( 1.0 - saturate( a ) )
+float pow2( const in float x ) { return x*x; }
+vec3 pow2( const in vec3 x ) { return x*x; }
+float pow3( const in float x ) { return x*x*x; }
+float pow4( const in float x ) { float x2 = x*x; return x2*x2; }
+float max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }
+float average( const in vec3 v ) { return dot( v, vec3( 0.3333333 ) ); }
+highp float rand( const in vec2 uv ) {
+	const highp float a = 12.9898, b = 78.233, c = 43758.5453;
+	highp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );
+	return fract( sin( sn ) * c );
+}
+#ifdef HIGH_PRECISION
+	float precisionSafeLength( vec3 v ) { return length( v ); }
+#else
+	float precisionSafeLength( vec3 v ) {
+		float maxComponent = max3( abs( v ) );
+		return length( v / maxComponent ) * maxComponent;
+	}
+#endif
+struct IncidentLight {
+	vec3 color;
+	vec3 direction;
+	bool visible;
+};
+struct ReflectedLight {
+	vec3 directDiffuse;
+	vec3 directSpecular;
+	vec3 indirectDiffuse;
+	vec3 indirectSpecular;
+};
+#ifdef USE_ALPHAHASH
+	varying vec3 vPosition;
+#endif
+vec3 transformDirection( in vec3 dir, in mat4 matrix ) {
+	return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );
+}
+#define inverseTransformDirection transformDirectionByInverseViewMatrix
+vec3 transformNormalByInverseViewMatrix( in vec3 normal, in mat4 viewMatrix ) {
+	return normalize( ( vec4( normal, 0.0 ) * viewMatrix ).xyz );
+}
+vec3 transformDirectionByInverseViewMatrix( in vec3 dir, in mat4 viewMatrix ) {
+	return normalize( ( vec4( dir, 0.0 ) * viewMatrix ).xyz );
+}
+bool isPerspectiveMatrix( mat4 m ) {
+	return m[ 2 ][ 3 ] == - 1.0;
+}
+vec2 equirectUv( in vec3 dir ) {
+	float u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;
+	float v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;
+	return vec2( u, v );
+}
+vec3 BRDF_Lambert( const in vec3 diffuseColor ) {
+	return RECIPROCAL_PI * diffuseColor;
+}
+vec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {
+	float fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );
+	return f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );
+}
+float F_Schlick( const in float f0, const in float f90, const in float dotVH ) {
+	float fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );
+	return f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );
+} // validated`,Yx=`#ifdef ENVMAP_TYPE_CUBE_UV
+	#define cubeUV_minMipLevel 4.0
+	#define cubeUV_minTileSize 16.0
+	float getFace( vec3 direction ) {
+		vec3 absDirection = abs( direction );
+		float face = - 1.0;
+		if ( absDirection.x > absDirection.z ) {
+			if ( absDirection.x > absDirection.y )
+				face = direction.x > 0.0 ? 0.0 : 3.0;
+			else
+				face = direction.y > 0.0 ? 1.0 : 4.0;
+		} else {
+			if ( absDirection.z > absDirection.y )
+				face = direction.z > 0.0 ? 2.0 : 5.0;
+			else
+				face = direction.y > 0.0 ? 1.0 : 4.0;
+		}
+		return face;
+	}
+	vec2 getUV( vec3 direction, float face ) {
+		vec2 uv;
+		if ( face == 0.0 ) {
+			uv = vec2( direction.z, direction.y ) / abs( direction.x );
+		} else if ( face == 1.0 ) {
+			uv = vec2( - direction.x, - direction.z ) / abs( direction.y );
+		} else if ( face == 2.0 ) {
+			uv = vec2( - direction.x, direction.y ) / abs( direction.z );
+		} else if ( face == 3.0 ) {
+			uv = vec2( - direction.z, direction.y ) / abs( direction.x );
+		} else if ( face == 4.0 ) {
+			uv = vec2( - direction.x, direction.z ) / abs( direction.y );
+		} else {
+			uv = vec2( direction.x, direction.y ) / abs( direction.z );
+		}
+		return 0.5 * ( uv + 1.0 );
+	}
+	vec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {
+		float face = getFace( direction );
+		float filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );
+		mipInt = max( mipInt, cubeUV_minMipLevel );
+		float faceSize = exp2( mipInt );
+		highp vec2 uv = getUV( direction, face ) * ( faceSize - 2.0 ) + 1.0;
+		if ( face > 2.0 ) {
+			uv.y += faceSize;
+			face -= 3.0;
+		}
+		uv.x += face * faceSize;
+		uv.x += filterInt * 3.0 * cubeUV_minTileSize;
+		uv.y += 4.0 * ( exp2( CUBEUV_MAX_MIP ) - faceSize );
+		uv.x *= CUBEUV_TEXEL_WIDTH;
+		uv.y *= CUBEUV_TEXEL_HEIGHT;
+		#ifdef texture2DGradEXT
+			return texture2DGradEXT( envMap, uv, vec2( 0.0 ), vec2( 0.0 ) ).rgb;
+		#else
+			return texture2D( envMap, uv ).rgb;
+		#endif
+	}
+	#define cubeUV_r0 1.0
+	#define cubeUV_m0 - 2.0
+	#define cubeUV_r1 0.8
+	#define cubeUV_m1 - 1.0
+	#define cubeUV_r4 0.4
+	#define cubeUV_m4 2.0
+	#define cubeUV_r5 0.305
+	#define cubeUV_m5 3.0
+	#define cubeUV_r6 0.21
+	#define cubeUV_m6 4.0
+	float roughnessToMip( float roughness ) {
+		float mip = 0.0;
+		if ( roughness >= cubeUV_r1 ) {
+			mip = ( cubeUV_r0 - roughness ) * ( cubeUV_m1 - cubeUV_m0 ) / ( cubeUV_r0 - cubeUV_r1 ) + cubeUV_m0;
+		} else if ( roughness >= cubeUV_r4 ) {
+			mip = ( cubeUV_r1 - roughness ) * ( cubeUV_m4 - cubeUV_m1 ) / ( cubeUV_r1 - cubeUV_r4 ) + cubeUV_m1;
+		} else if ( roughness >= cubeUV_r5 ) {
+			mip = ( cubeUV_r4 - roughness ) * ( cubeUV_m5 - cubeUV_m4 ) / ( cubeUV_r4 - cubeUV_r5 ) + cubeUV_m4;
+		} else if ( roughness >= cubeUV_r6 ) {
+			mip = ( cubeUV_r5 - roughness ) * ( cubeUV_m6 - cubeUV_m5 ) / ( cubeUV_r5 - cubeUV_r6 ) + cubeUV_m5;
+		} else {
+			mip = - 2.0 * log2( 1.16 * roughness );		}
+		return mip;
+	}
+	vec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {
+		float mip = clamp( roughnessToMip( roughness ), cubeUV_m0, CUBEUV_MAX_MIP );
+		float mipF = fract( mip );
+		float mipInt = floor( mip );
+		vec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );
+		if ( mipF == 0.0 ) {
+			return vec4( color0, 1.0 );
+		} else {
+			vec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );
+			return vec4( mix( color0, color1, mipF ), 1.0 );
+		}
+	}
+#endif`,Zx=`vec3 transformedNormal = objectNormal;
+#ifdef USE_TANGENT
+	vec3 transformedTangent = objectTangent;
+#endif
+#ifdef USE_BATCHING
+	mat3 bm = mat3( batchingMatrix );
+	transformedNormal /= vec3( dot( bm[ 0 ], bm[ 0 ] ), dot( bm[ 1 ], bm[ 1 ] ), dot( bm[ 2 ], bm[ 2 ] ) );
+	transformedNormal = bm * transformedNormal;
+	#ifdef USE_TANGENT
+		transformedTangent = bm * transformedTangent;
+	#endif
+#endif
+#ifdef USE_INSTANCING
+	mat3 im = mat3( instanceMatrix );
+	transformedNormal /= vec3( dot( im[ 0 ], im[ 0 ] ), dot( im[ 1 ], im[ 1 ] ), dot( im[ 2 ], im[ 2 ] ) );
+	transformedNormal = im * transformedNormal;
+	#ifdef USE_TANGENT
+		transformedTangent = im * transformedTangent;
+	#endif
+#endif
+transformedNormal = normalMatrix * transformedNormal;
+#ifdef FLIP_SIDED
+	transformedNormal = - transformedNormal;
+#endif
+#ifdef USE_TANGENT
+	transformedTangent = ( modelViewMatrix * vec4( transformedTangent, 0.0 ) ).xyz;
+#endif`,Kx=`#ifdef USE_DISPLACEMENTMAP
+	uniform sampler2D displacementMap;
+	uniform float displacementScale;
+	uniform float displacementBias;
+#endif`,Jx=`#ifdef USE_DISPLACEMENTMAP
+	transformed += normalize( objectNormal ) * ( texture2D( displacementMap, vDisplacementMapUv ).x * displacementScale + displacementBias );
+#endif`,jx=`#ifdef USE_EMISSIVEMAP
+	vec4 emissiveColor = texture2D( emissiveMap, vEmissiveMapUv );
+	#ifdef DECODE_VIDEO_TEXTURE_EMISSIVE
+		emissiveColor = sRGBTransferEOTF( emissiveColor );
+	#endif
+	totalEmissiveRadiance *= emissiveColor.rgb;
+#endif`,$x=`#ifdef USE_EMISSIVEMAP
+	uniform sampler2D emissiveMap;
+#endif`,Qx="gl_FragColor = linearToOutputTexel( gl_FragColor );",ey=`vec4 LinearTransferOETF( in vec4 value ) {
+	return value;
+}
+vec4 sRGBTransferEOTF( in vec4 value ) {
+	return vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );
+}
+vec4 sRGBTransferOETF( in vec4 value ) {
+	return vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );
+}`,ty=`#ifdef USE_ENVMAP
+	#ifdef ENV_WORLDPOS
+		vec3 cameraToFrag;
+		if ( isOrthographic ) {
+			cameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );
+		} else {
+			cameraToFrag = normalize( vWorldPosition - cameraPosition );
+		}
+		vec3 worldNormal = transformNormalByInverseViewMatrix( normal, viewMatrix );
+		#ifdef ENVMAP_MODE_REFLECTION
+			vec3 reflectVec = reflect( cameraToFrag, worldNormal );
+		#else
+			vec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );
+		#endif
+	#else
+		vec3 reflectVec = vReflect;
+	#endif
+	#ifdef ENVMAP_TYPE_CUBE
+		vec4 envColor = textureCube( envMap, envMapRotation * reflectVec );
+		#ifdef ENVMAP_BLENDING_MULTIPLY
+			outgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );
+		#elif defined( ENVMAP_BLENDING_MIX )
+			outgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );
+		#elif defined( ENVMAP_BLENDING_ADD )
+			outgoingLight += envColor.xyz * specularStrength * reflectivity;
+		#endif
+	#endif
+#endif`,ny=`#ifdef USE_ENVMAP
+	uniform float envMapIntensity;
+	uniform mat3 envMapRotation;
+	#ifdef ENVMAP_TYPE_CUBE
+		uniform samplerCube envMap;
+	#else
+		uniform sampler2D envMap;
+	#endif
+#endif`,iy=`#ifdef USE_ENVMAP
+	uniform float reflectivity;
+	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )
+		#define ENV_WORLDPOS
+	#endif
+	#ifdef ENV_WORLDPOS
+		varying vec3 vWorldPosition;
+		uniform float refractionRatio;
+	#else
+		varying vec3 vReflect;
+	#endif
+#endif`,sy=`#ifdef USE_ENVMAP
+	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )
+		#define ENV_WORLDPOS
+	#endif
+	#ifdef ENV_WORLDPOS
+		
+		varying vec3 vWorldPosition;
+	#else
+		varying vec3 vReflect;
+		uniform float refractionRatio;
+	#endif
+#endif`,ry=`#ifdef USE_ENVMAP
+	#ifdef ENV_WORLDPOS
+		vWorldPosition = worldPosition.xyz;
+	#else
+		vec3 cameraToVertex;
+		if ( isOrthographic ) {
+			cameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );
+		} else {
+			cameraToVertex = normalize( worldPosition.xyz - cameraPosition );
+		}
+		vec3 worldNormal = transformNormalByInverseViewMatrix( transformedNormal, viewMatrix );
+		#ifdef ENVMAP_MODE_REFLECTION
+			vReflect = reflect( cameraToVertex, worldNormal );
+		#else
+			vReflect = refract( cameraToVertex, worldNormal, refractionRatio );
+		#endif
+	#endif
+#endif`,oy=`#ifdef USE_FOG
+	vFogDepth = - mvPosition.z;
+#endif`,ay=`#ifdef USE_FOG
+	varying float vFogDepth;
+#endif`,ly=`#ifdef USE_FOG
+	#ifdef FOG_EXP2
+		float fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );
+	#else
+		float fogFactor = smoothstep( fogNear, fogFar, vFogDepth );
+	#endif
+	gl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );
+#endif`,cy=`#ifdef USE_FOG
+	uniform vec3 fogColor;
+	varying float vFogDepth;
+	#ifdef FOG_EXP2
+		uniform float fogDensity;
+	#else
+		uniform float fogNear;
+		uniform float fogFar;
+	#endif
+#endif`,hy=`#ifdef USE_GRADIENTMAP
+	uniform sampler2D gradientMap;
+#endif
+vec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {
+	float dotNL = dot( normal, lightDirection );
+	vec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );
+	#ifdef USE_GRADIENTMAP
+		return vec3( texture2D( gradientMap, coord ).r );
+	#else
+		vec2 fw = fwidth( coord ) * 0.5;
+		return mix( vec3( 0.7 ), vec3( 1.0 ), smoothstep( 0.7 - fw.x, 0.7 + fw.x, coord.x ) );
+	#endif
+}`,uy=`#ifdef USE_LIGHTMAP
+	uniform sampler2D lightMap;
+	uniform float lightMapIntensity;
+#endif`,dy=`LambertMaterial material;
+material.diffuseColor = diffuseColor.rgb;
+material.specularStrength = specularStrength;`,fy=`varying vec3 vViewPosition;
+struct LambertMaterial {
+	vec3 diffuseColor;
+	float specularStrength;
+};
+void RE_Direct_Lambert( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {
+	float dotNL = saturate( dot( geometryNormal, directLight.direction ) );
+	vec3 irradiance = dotNL * directLight.color;
+	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );
+}
+void RE_IndirectDiffuse_Lambert( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {
+	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );
+}
+#define RE_Direct				RE_Direct_Lambert
+#define RE_IndirectDiffuse		RE_IndirectDiffuse_Lambert`,py=`uniform bool receiveShadow;
+uniform vec3 ambientLightColor;
+#if defined( USE_LIGHT_PROBES )
+	uniform vec3 lightProbe[ 9 ];
+#endif
+vec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {
+	float x = normal.x, y = normal.y, z = normal.z;
+	vec3 result = shCoefficients[ 0 ] * 0.886227;
+	result += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;
+	result += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;
+	result += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;
+	result += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;
+	result += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;
+	result += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );
+	result += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;
+	result += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );
+	return result;
+}
+vec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {
+	vec3 worldNormal = transformNormalByInverseViewMatrix( normal, viewMatrix );
+	vec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );
+	return irradiance;
+}
+vec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {
+	vec3 irradiance = ambientLightColor;
+	return irradiance;
+}
+float getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {
+	float distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );
+	if ( cutoffDistance > 0.0 ) {
+		distanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );
+	}
+	return distanceFalloff;
+}
+float getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {
+	return smoothstep( coneCosine, penumbraCosine, angleCosine );
+}
+#if NUM_SUN_LIGHTS > 0
+	struct SunLight {
+		vec3 direction;
+		vec3 color;
+	};
+	uniform SunLight sunLights[ NUM_SUN_LIGHTS ];
+	void getSunLightInfo( const in SunLight sunLight, out IncidentLight light ) {
+		light.color = sunLight.color;
+		light.direction = sunLight.direction;
+		light.visible = true;
+	}
+#endif
+#if NUM_DIR_LIGHTS > 0
+	struct DirectionalLight {
+		vec3 direction;
+		vec3 color;
+	};
+	uniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];
+	void getDirectionalLightInfo( const in DirectionalLight directionalLight, out IncidentLight light ) {
+		light.color = directionalLight.color;
+		light.direction = directionalLight.direction;
+		light.visible = true;
+	}
+#endif
+#if NUM_POINT_LIGHTS > 0
+	struct PointLight {
+		vec3 position;
+		vec3 color;
+		float distance;
+		float decay;
+	};
+	uniform PointLight pointLights[ NUM_POINT_LIGHTS ];
+	void getPointLightInfo( const in PointLight pointLight, const in vec3 geometryPosition, out IncidentLight light ) {
+		vec3 lVector = pointLight.position - geometryPosition;
+		light.direction = normalize( lVector );
+		float lightDistance = length( lVector );
+		light.color = pointLight.color;
+		light.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );
+		light.visible = ( light.color != vec3( 0.0 ) );
+	}
+#endif
+#if NUM_SPOT_LIGHTS > 0
+	struct SpotLight {
+		vec3 position;
+		vec3 direction;
+		vec3 color;
+		float distance;
+		float decay;
+		float coneCos;
+		float penumbraCos;
+	};
+	uniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];
+	void getSpotLightInfo( const in SpotLight spotLight, const in vec3 geometryPosition, out IncidentLight light ) {
+		vec3 lVector = spotLight.position - geometryPosition;
+		light.direction = normalize( lVector );
+		float angleCos = dot( light.direction, spotLight.direction );
+		float spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );
+		if ( spotAttenuation > 0.0 ) {
+			float lightDistance = length( lVector );
+			light.color = spotLight.color * spotAttenuation;
+			light.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );
+			light.visible = ( light.color != vec3( 0.0 ) );
+		} else {
+			light.color = vec3( 0.0 );
+			light.visible = false;
+		}
+	}
+#endif
+#if NUM_RECT_AREA_LIGHTS > 0
+	struct RectAreaLight {
+		vec3 color;
+		vec3 position;
+		vec3 halfWidth;
+		vec3 halfHeight;
+	};
+	uniform sampler2D ltc_1;	uniform sampler2D ltc_2;
+	uniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];
+#endif
+#if NUM_HEMI_LIGHTS > 0
+	struct HemisphereLight {
+		vec3 direction;
+		vec3 skyColor;
+		vec3 groundColor;
+	};
+	uniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];
+	vec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {
+		float dotNL = dot( normal, hemiLight.direction );
+		float hemiDiffuseWeight = 0.5 * dotNL + 0.5;
+		vec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );
+		return irradiance;
+	}
+#endif
+#include <lightprobes_pars_fragment>`,my=`#ifdef USE_ENVMAP
+	vec3 getIBLIrradiance( const in vec3 normal ) {
+		#ifdef ENVMAP_TYPE_CUBE_UV
+			vec3 worldNormal = transformNormalByInverseViewMatrix( normal, viewMatrix );
+			vec4 envMapColor = textureCubeUV( envMap, envMapRotation * worldNormal, 1.0 );
+			return PI * envMapColor.rgb * envMapIntensity;
+		#else
+			return vec3( 0.0 );
+		#endif
+	}
+	vec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {
+		#ifdef ENVMAP_TYPE_CUBE_UV
+			vec3 reflectVec = reflect( - viewDir, normal );
+			reflectVec = normalize( mix( reflectVec, normal, pow4( roughness ) ) );
+			reflectVec = transformDirectionByInverseViewMatrix( reflectVec, viewMatrix );
+			vec4 envMapColor = textureCubeUV( envMap, envMapRotation * reflectVec, roughness );
+			return envMapColor.rgb * envMapIntensity;
+		#else
+			return vec3( 0.0 );
+		#endif
+	}
+	#ifdef USE_RETROREFLECTION
+		vec3 getIBLRetroRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {
+			#ifdef ENVMAP_TYPE_CUBE_UV
+				vec3 retroVec = normalize( mix( viewDir, normal, pow4( roughness ) ) );
+				retroVec = transformDirectionByInverseViewMatrix( retroVec, viewMatrix );
+				vec4 envMapColor = textureCubeUV( envMap, envMapRotation * retroVec, roughness );
+				return envMapColor.rgb * envMapIntensity;
+			#else
+				return vec3( 0.0 );
+			#endif
+		}
+	#endif
+	#ifdef USE_ANISOTROPY
+		vec3 getIBLAnisotropyRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in vec3 bitangent, const in float anisotropy ) {
+			#ifdef ENVMAP_TYPE_CUBE_UV
+				vec3 bentNormal = cross( bitangent, viewDir );
+				bentNormal = normalize( cross( bentNormal, bitangent ) );
+				bentNormal = normalize( mix( bentNormal, normal, pow2( pow2( 1.0 - anisotropy * ( 1.0 - roughness ) ) ) ) );
+				return getIBLRadiance( viewDir, bentNormal, roughness );
+			#else
+				return vec3( 0.0 );
+			#endif
+		}
+		#ifdef USE_RETROREFLECTION
+			vec3 getIBLAnisotropyRetroRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in vec3 bitangent, const in float anisotropy ) {
+				#ifdef ENVMAP_TYPE_CUBE_UV
+					vec3 bentNormal = cross( bitangent, viewDir );
+					bentNormal = normalize( cross( bentNormal, bitangent ) );
+					bentNormal = normalize( mix( bentNormal, normal, pow2( pow2( 1.0 - anisotropy * ( 1.0 - roughness ) ) ) ) );
+					return getIBLRetroRadiance( viewDir, bentNormal, roughness );
+				#else
+					return vec3( 0.0 );
+				#endif
+			}
+		#endif
+	#endif
+#endif`,gy=`ToonMaterial material;
+material.diffuseColor = diffuseColor.rgb;`,_y=`varying vec3 vViewPosition;
+struct ToonMaterial {
+	vec3 diffuseColor;
+};
+void RE_Direct_Toon( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {
+	vec3 irradiance = getGradientIrradiance( geometryNormal, directLight.direction ) * directLight.color;
+	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );
+}
+void RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {
+	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );
+}
+#define RE_Direct				RE_Direct_Toon
+#define RE_IndirectDiffuse		RE_IndirectDiffuse_Toon`,xy=`BlinnPhongMaterial material;
+material.diffuseColor = diffuseColor.rgb;
+material.specularColor = specular;
+material.specularShininess = shininess;
+material.specularStrength = specularStrength;`,yy=`varying vec3 vViewPosition;
+struct BlinnPhongMaterial {
+	vec3 diffuseColor;
+	vec3 specularColor;
+	float specularShininess;
+	float specularStrength;
+};
+void RE_Direct_BlinnPhong( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {
+	float dotNL = saturate( dot( geometryNormal, directLight.direction ) );
+	vec3 irradiance = dotNL * directLight.color;
+	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );
+	reflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometryViewDir, geometryNormal, material.specularColor, material.specularShininess ) * material.specularStrength;
+}
+void RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {
+	reflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );
+}
+#define RE_Direct				RE_Direct_BlinnPhong
+#define RE_IndirectDiffuse		RE_IndirectDiffuse_BlinnPhong`,vy=`PhysicalMaterial material;
+material.diffuseColor = diffuseColor.rgb;
+material.diffuseContribution = diffuseColor.rgb * ( 1.0 - metalnessFactor );
+material.metalness = metalnessFactor;
+vec3 dxy = max( abs( dFdx( nonPerturbedNormal ) ), abs( dFdy( nonPerturbedNormal ) ) );
+float geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );
+material.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;
+material.roughness = min( material.roughness, 1.0 );
+#ifdef IOR
+	material.ior = ior;
+	#ifdef USE_SPECULAR
+		float specularIntensityFactor = specularIntensity;
+		vec3 specularColorFactor = specularColor;
+		#ifdef USE_SPECULAR_COLORMAP
+			specularColorFactor *= texture2D( specularColorMap, vSpecularColorMapUv ).rgb;
+		#endif
+		#ifdef USE_SPECULAR_INTENSITYMAP
+			specularIntensityFactor *= texture2D( specularIntensityMap, vSpecularIntensityMapUv ).a;
+		#endif
+		material.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );
+	#else
+		float specularIntensityFactor = 1.0;
+		vec3 specularColorFactor = vec3( 1.0 );
+		material.specularF90 = 1.0;
+	#endif
+	material.specularColor = min( pow2( ( material.ior - 1.0 ) / ( material.ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor;
+	material.specularColorBlended = mix( material.specularColor, diffuseColor.rgb, metalnessFactor );
+#else
+	material.specularColor = vec3( 0.04 );
+	material.specularColorBlended = mix( material.specularColor, diffuseColor.rgb, metalnessFactor );
+	material.specularF90 = 1.0;
+#endif
+#ifdef USE_CLEARCOAT
+	material.clearcoat = clearcoat;
+	material.clearcoatRoughness = clearcoatRoughness;
+	material.clearcoatF0 = vec3( 0.04 );
+	material.clearcoatF90 = 1.0;
+	#ifdef USE_CLEARCOATMAP
+		material.clearcoat *= texture2D( clearcoatMap, vClearcoatMapUv ).x;
+	#endif
+	#ifdef USE_CLEARCOAT_ROUGHNESSMAP
+		material.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vClearcoatRoughnessMapUv ).y;
+	#endif
+	material.clearcoat = saturate( material.clearcoat );	material.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );
+	material.clearcoatRoughness += geometryRoughness;
+	material.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );
+#endif
+#ifdef USE_DISPERSION
+	material.dispersion = dispersion;
+#endif
+#ifdef USE_RETROREFLECTION
+	material.retroreflectivity = retroreflectivity;
+#endif
+#ifdef USE_IRIDESCENCE
+	material.iridescence = iridescence;
+	material.iridescenceIOR = iridescenceIOR;
+	#ifdef USE_IRIDESCENCEMAP
+		material.iridescence *= texture2D( iridescenceMap, vIridescenceMapUv ).r;
+	#endif
+	#ifdef USE_IRIDESCENCE_THICKNESSMAP
+		material.iridescenceThickness = (iridescenceThicknessMaximum - iridescenceThicknessMinimum) * texture2D( iridescenceThicknessMap, vIridescenceThicknessMapUv ).g + iridescenceThicknessMinimum;
+	#else
+		material.iridescenceThickness = iridescenceThicknessMaximum;
+	#endif
+#endif
+#ifdef USE_SHEEN
+	material.sheenColor = sheenColor;
+	#ifdef USE_SHEEN_COLORMAP
+		material.sheenColor *= texture2D( sheenColorMap, vSheenColorMapUv ).rgb;
+	#endif
+	material.sheenRoughness = clamp( sheenRoughness, 0.0001, 1.0 );
+	#ifdef USE_SHEEN_ROUGHNESSMAP
+		material.sheenRoughness *= texture2D( sheenRoughnessMap, vSheenRoughnessMapUv ).a;
+	#endif
+#endif
+#ifdef USE_ANISOTROPY
+	#ifdef USE_ANISOTROPYMAP
+		mat2 anisotropyMat = mat2( anisotropyVector.x, anisotropyVector.y, - anisotropyVector.y, anisotropyVector.x );
+		vec3 anisotropyPolar = texture2D( anisotropyMap, vAnisotropyMapUv ).rgb;
+		vec2 anisotropyV = anisotropyMat * normalize( 2.0 * anisotropyPolar.rg - vec2( 1.0 ) ) * anisotropyPolar.b;
+	#else
+		vec2 anisotropyV = anisotropyVector;
+	#endif
+	material.anisotropy = length( anisotropyV );
+	if( material.anisotropy == 0.0 ) {
+		anisotropyV = vec2( 1.0, 0.0 );
+	} else {
+		anisotropyV /= material.anisotropy;
+		material.anisotropy = saturate( material.anisotropy );
+	}
+	material.alphaT = mix( pow2( material.roughness ), 1.0, pow2( material.anisotropy ) );
+	material.anisotropyT = tbn[ 0 ] * anisotropyV.x + tbn[ 1 ] * anisotropyV.y;
+	material.anisotropyB = tbn[ 1 ] * anisotropyV.x - tbn[ 0 ] * anisotropyV.y;
+#endif`,My=`uniform sampler2D dfgLUT;
+struct PhysicalMaterial {
+	vec3 diffuseColor;
+	vec3 diffuseContribution;
+	vec3 specularColor;
+	vec3 specularColorBlended;
+	float roughness;
+	float metalness;
+	float specularF90;
+	float dispersion;
+	vec2 dfg;
+	vec3 multiScatteringCompensation;
+	#ifdef USE_RETROREFLECTION
+		float retroreflectivity;
+	#endif
+	#ifdef USE_CLEARCOAT
+		float clearcoat;
+		float clearcoatRoughness;
+		vec3 clearcoatF0;
+		float clearcoatF90;
+	#endif
+	#ifdef USE_IRIDESCENCE
+		float iridescence;
+		float iridescenceIOR;
+		float iridescenceThickness;
+		vec3 iridescenceFresnel;
+		vec3 iridescenceF0Dielectric;
+		vec3 iridescenceF0Metallic;
+	#endif
+	#ifdef USE_SHEEN
+		vec3 sheenColor;
+		float sheenRoughness;
+	#endif
+	#ifdef IOR
+		float ior;
+	#endif
+	#ifdef USE_TRANSMISSION
+		float transmission;
+		float transmissionAlpha;
+		float thickness;
+		float attenuationDistance;
+		vec3 attenuationColor;
+	#endif
+	#ifdef USE_ANISOTROPY
+		float anisotropy;
+		float alphaT;
+		vec3 anisotropyT;
+		vec3 anisotropyB;
+	#endif
+};
+vec3 clearcoatSpecularDirect = vec3( 0.0 );
+vec3 clearcoatSpecularIndirect = vec3( 0.0 );
+vec3 sheenSpecularDirect = vec3( 0.0 );
+vec3 sheenSpecularIndirect = vec3(0.0 );
+vec3 Schlick_to_F0( const in vec3 f, const in float f90, const in float dotVH ) {
+    float x = clamp( 1.0 - dotVH, 0.0, 1.0 );
+    float x2 = x * x;
+    float x5 = clamp( x * x2 * x2, 0.0, 0.9999 );
+    return ( f - vec3( f90 ) * x5 ) / ( 1.0 - x5 );
+}
+float V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {
+	float a2 = pow2( alpha );
+	float gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );
+	float gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );
+	return 0.5 / max( gv + gl, EPSILON );
+}
+float D_GGX( const in float alpha, const in float dotNH ) {
+	float a2 = pow2( alpha );
+	float denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;
+	return RECIPROCAL_PI * a2 / pow2( denom );
+}
+#ifdef USE_ANISOTROPY
+	float V_GGX_SmithCorrelated_Anisotropic( const in float alphaT, const in float alphaB, const in float dotTV, const in float dotBV, const in float dotTL, const in float dotBL, const in float dotNV, const in float dotNL ) {
+		float gv = dotNL * length( vec3( alphaT * dotTV, alphaB * dotBV, dotNV ) );
+		float gl = dotNV * length( vec3( alphaT * dotTL, alphaB * dotBL, dotNL ) );
+		return 0.5 / max( gv + gl, EPSILON );
+	}
+	float D_GGX_Anisotropic( const in float alphaT, const in float alphaB, const in float dotNH, const in float dotTH, const in float dotBH ) {
+		float a2 = alphaT * alphaB;
+		highp vec3 v = vec3( alphaB * dotTH, alphaT * dotBH, a2 * dotNH );
+		highp float v2 = dot( v, v );
+		float w2 = a2 / v2;
+		return RECIPROCAL_PI * a2 * pow2 ( w2 );
+	}
+#endif
+#ifdef USE_CLEARCOAT
+	vec3 BRDF_GGX_Clearcoat( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material) {
+		vec3 f0 = material.clearcoatF0;
+		float f90 = material.clearcoatF90;
+		float roughness = material.clearcoatRoughness;
+		float alpha = pow2( roughness );
+		vec3 halfDir = normalize( lightDir + viewDir );
+		float dotNL = saturate( dot( normal, lightDir ) );
+		float dotNV = saturate( dot( normal, viewDir ) );
+		float dotNH = saturate( dot( normal, halfDir ) );
+		float dotVH = saturate( dot( viewDir, halfDir ) );
+		vec3 F = F_Schlick( f0, f90, dotVH );
+		float V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );
+		float D = D_GGX( alpha, dotNH );
+		return F * ( V * D );
+	}
+#endif
+vec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material ) {
+	vec3 f0 = material.specularColorBlended;
+	float f90 = material.specularF90;
+	float roughness = material.roughness;
+	float alpha = pow2( roughness );
+	vec3 halfDir = normalize( lightDir + viewDir );
+	float dotNL = saturate( dot( normal, lightDir ) );
+	float dotNV = saturate( dot( normal, viewDir ) );
+	float dotNH = saturate( dot( normal, halfDir ) );
+	float dotVH = saturate( dot( viewDir, halfDir ) );
+	vec3 F = F_Schlick( f0, f90, dotVH );
+	#ifdef USE_IRIDESCENCE
+		F = mix( F, material.iridescenceFresnel, material.iridescence );
+	#endif
+	#ifdef USE_ANISOTROPY
+		float dotTL = dot( material.anisotropyT, lightDir );
+		float dotTV = dot( material.anisotropyT, viewDir );
+		float dotTH = dot( material.anisotropyT, halfDir );
+		float dotBL = dot( material.anisotropyB, lightDir );
+		float dotBV = dot( material.anisotropyB, viewDir );
+		float dotBH = dot( material.anisotropyB, halfDir );
+		float V = V_GGX_SmithCorrelated_Anisotropic( material.alphaT, alpha, dotTV, dotBV, dotTL, dotBL, dotNV, dotNL );
+		float D = D_GGX_Anisotropic( material.alphaT, alpha, dotNH, dotTH, dotBH );
+	#else
+		float V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );
+		float D = D_GGX( alpha, dotNH );
+	#endif
+	return F * ( V * D );
+}
+vec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {
+	const float LUT_SIZE = 64.0;
+	const float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;
+	const float LUT_BIAS = 0.5 / LUT_SIZE;
+	float dotNV = saturate( dot( N, V ) );
+	vec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );
+	uv = uv * LUT_SCALE + LUT_BIAS;
+	return uv;
+}
+float LTC_ClippedSphereFormFactor( const in vec3 f ) {
+	float l = length( f );
+	return max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );
+}
+vec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {
+	float x = dot( v1, v2 );
+	float y = abs( x );
+	float a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;
+	float b = 3.4175940 + ( 4.1616724 + y ) * y;
+	float v = a / b;
+	float theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;
+	return cross( v1, v2 ) * theta_sintheta;
+}
+vec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {
+	vec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];
+	vec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];
+	vec3 lightNormal = cross( v1, v2 );
+	if( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );
+	vec3 T1, T2;
+	T1 = normalize( V - N * dot( V, N ) );
+	T2 = - cross( N, T1 );
+	mat3 mat = mInv * transpose( mat3( T1, T2, N ) );
+	vec3 coords[ 4 ];
+	coords[ 0 ] = mat * ( rectCoords[ 0 ] - P );
+	coords[ 1 ] = mat * ( rectCoords[ 1 ] - P );
+	coords[ 2 ] = mat * ( rectCoords[ 2 ] - P );
+	coords[ 3 ] = mat * ( rectCoords[ 3 ] - P );
+	coords[ 0 ] = normalize( coords[ 0 ] );
+	coords[ 1 ] = normalize( coords[ 1 ] );
+	coords[ 2 ] = normalize( coords[ 2 ] );
+	coords[ 3 ] = normalize( coords[ 3 ] );
+	vec3 vectorFormFactor = vec3( 0.0 );
+	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );
+	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );
+	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );
+	vectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );
+	float result = LTC_ClippedSphereFormFactor( vectorFormFactor );
+	return vec3( result );
+}
+#if defined( USE_SHEEN )
+float D_Charlie( float roughness, float dotNH ) {
+	float alpha = pow2( roughness );
+	float invAlpha = 1.0 / alpha;
+	float cos2h = dotNH * dotNH;
+	float sin2h = max( 1.0 - cos2h, 0.0078125 );
+	return ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );
+}
+float V_Neubelt( float dotNV, float dotNL ) {
+	return saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );
+}
+vec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenColor, const in float sheenRoughness ) {
+	vec3 halfDir = normalize( lightDir + viewDir );
+	float dotNL = saturate( dot( normal, lightDir ) );
+	float dotNV = saturate( dot( normal, viewDir ) );
+	float dotNH = saturate( dot( normal, halfDir ) );
+	float D = D_Charlie( sheenRoughness, dotNH );
+	float V = V_Neubelt( dotNV, dotNL );
+	return sheenColor * ( D * V );
+}
+#endif
+float IBLSheenBRDF( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {
+	float dotNV = saturate( dot( normal, viewDir ) );
+	float r2 = roughness * roughness;
+	float rInv = 1.0 / ( roughness + 0.1 );
+	float a = -1.9362 + 1.0678 * roughness + 0.4573 * r2 - 0.8469 * rInv;
+	float b = -0.6014 + 0.5538 * roughness - 0.4670 * r2 - 0.1255 * rInv;
+	float DG = exp( a * dotNV + b );
+	return saturate( DG );
+}
+vec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {
+	float dotNV = saturate( dot( normal, viewDir ) );
+	vec2 fab = texture2D( dfgLUT, vec2( roughness, dotNV ) ).rg;
+	return specularColor * fab.x + specularF90 * fab.y;
+}
+#ifdef USE_IRIDESCENCE
+void computeMultiscatteringIridescence( const in vec2 fab, const in vec3 specularColor, const in float specularF90, const in float iridescence, const in vec3 iridescenceF0, inout vec3 singleScatter, inout vec3 multiScatter ) {
+#else
+void computeMultiscattering( const in vec2 fab, const in vec3 specularColor, const in float specularF90, inout vec3 singleScatter, inout vec3 multiScatter ) {
+#endif
+	#ifdef USE_IRIDESCENCE
+		vec3 Fr = mix( specularColor, iridescenceF0, iridescence );
+	#else
+		vec3 Fr = specularColor;
+	#endif
+	vec3 FssEss = Fr * fab.x + specularF90 * fab.y;
+	float Ess = fab.x + fab.y;
+	float Ems = 1.0 - Ess;
+	vec3 Favg = Fr + ( 1.0 - Fr ) * 0.047619;	vec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );
+	singleScatter += FssEss;
+	multiScatter += Fms * Ems;
+}
+#if NUM_RECT_AREA_LIGHTS > 0
+	void RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {
+		vec3 normal = geometryNormal;
+		vec3 viewDir = geometryViewDir;
+		vec3 position = geometryPosition;
+		vec3 lightPos = rectAreaLight.position;
+		vec3 halfWidth = rectAreaLight.halfWidth;
+		vec3 halfHeight = rectAreaLight.halfHeight;
+		vec3 lightColor = rectAreaLight.color;
+		float roughness = material.roughness;
+		vec3 rectCoords[ 4 ];
+		rectCoords[ 0 ] = lightPos + halfWidth - halfHeight;		rectCoords[ 1 ] = lightPos - halfWidth - halfHeight;
+		rectCoords[ 2 ] = lightPos - halfWidth + halfHeight;
+		rectCoords[ 3 ] = lightPos + halfWidth + halfHeight;
+		vec2 uv = LTC_Uv( normal, viewDir, roughness );
+		vec4 t1 = texture2D( ltc_1, uv );
+		vec4 t2 = texture2D( ltc_2, uv );
+		mat3 mInv = mat3(
+			vec3( t1.x, 0, t1.y ),
+			vec3(    0, 1,    0 ),
+			vec3( t1.z, 0, t1.w )
+		);
+		vec3 fresnel = ( material.specularColorBlended * t2.x + ( material.specularF90 - material.specularColorBlended ) * t2.y );
+		reflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );
+		reflectedLight.directDiffuse += lightColor * material.diffuseContribution * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );
+		#ifdef USE_CLEARCOAT
+			vec3 Ncc = geometryClearcoatNormal;
+			vec2 uvClearcoat = LTC_Uv( Ncc, viewDir, material.clearcoatRoughness );
+			vec4 t1Clearcoat = texture2D( ltc_1, uvClearcoat );
+			vec4 t2Clearcoat = texture2D( ltc_2, uvClearcoat );
+			mat3 mInvClearcoat = mat3(
+				vec3( t1Clearcoat.x, 0, t1Clearcoat.y ),
+				vec3(             0, 1,             0 ),
+				vec3( t1Clearcoat.z, 0, t1Clearcoat.w )
+			);
+			vec3 fresnelClearcoat = material.clearcoatF0 * t2Clearcoat.x + ( material.clearcoatF90 - material.clearcoatF0 ) * t2Clearcoat.y;
+			clearcoatSpecularDirect += lightColor * fresnelClearcoat * LTC_Evaluate( Ncc, viewDir, position, mInvClearcoat, rectCoords );
+		#endif
+	}
+#endif
+void RE_Direct_Physical( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {
+	float dotNL = saturate( dot( geometryNormal, directLight.direction ) );
+	vec3 irradiance = dotNL * directLight.color;
+	#ifdef USE_CLEARCOAT
+		float dotNLcc = saturate( dot( geometryClearcoatNormal, directLight.direction ) );
+		vec3 ccIrradiance = dotNLcc * directLight.color;
+		clearcoatSpecularDirect += ccIrradiance * BRDF_GGX_Clearcoat( directLight.direction, geometryViewDir, geometryClearcoatNormal, material );
+	#endif
+	#ifdef USE_SHEEN
+ 
+ 		sheenSpecularDirect += irradiance * BRDF_Sheen( directLight.direction, geometryViewDir, geometryNormal, material.sheenColor, material.sheenRoughness );
+ 
+ 		float sheenAlbedoV = IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );
+ 		float sheenAlbedoL = IBLSheenBRDF( geometryNormal, directLight.direction, material.sheenRoughness );
+ 
+ 		float sheenEnergyComp = 1.0 - max3( material.sheenColor ) * max( sheenAlbedoV, sheenAlbedoL );
+ 
+ 		irradiance *= sheenEnergyComp;
+ 
+ 	#endif
+	vec3 specularBRDF = BRDF_GGX( directLight.direction, geometryViewDir, geometryNormal, material );
+	#ifdef USE_RETROREFLECTION
+		vec3 retroViewDir = reflect( - geometryViewDir, geometryNormal );
+		vec3 retroSpecularBRDF = BRDF_GGX( directLight.direction, retroViewDir, geometryNormal, material );
+		specularBRDF = mix( specularBRDF, retroSpecularBRDF, saturate( material.retroreflectivity ) );
+	#endif
+	reflectedLight.directSpecular += irradiance * specularBRDF * material.multiScatteringCompensation;
+	vec3 halfDir = normalize( directLight.direction + geometryViewDir );
+	float dotVH = saturate( dot( geometryViewDir, halfDir ) );
+	vec3 F = F_Schlick( material.specularColor, material.specularF90, dotVH );
+	#ifdef USE_RETROREFLECTION
+		vec3 retroHalfDir = normalize( directLight.direction + retroViewDir );
+		float dotRetroVH = saturate( dot( retroViewDir, retroHalfDir ) );
+		vec3 retroF = F_Schlick( material.specularColor, material.specularF90, dotRetroVH );
+		F = mix( F, retroF, saturate( material.retroreflectivity ) );
+	#endif
+	reflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseContribution ) * ( 1.0 - F );
+}
+void RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {
+	vec3 singleScattering = vec3( 0.0 );
+	vec3 multiScattering = vec3( 0.0 );
+	#ifdef USE_IRIDESCENCE
+		computeMultiscatteringIridescence( material.dfg, material.specularColor, material.specularF90, material.iridescence, material.iridescenceF0Dielectric, singleScattering, multiScattering );
+	#else
+		computeMultiscattering( material.dfg, material.specularColor, material.specularF90, singleScattering, multiScattering );
+	#endif
+	vec3 diffuse = irradiance * BRDF_Lambert( material.diffuseContribution ) * ( 1.0 - singleScattering - multiScattering );
+	#ifdef USE_SHEEN
+		float sheenAlbedo = IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );
+		sheenSpecularIndirect += irradiance * material.sheenColor * sheenAlbedo * RECIPROCAL_PI;
+		float sheenEnergyComp = 1.0 - max3( material.sheenColor ) * sheenAlbedo;
+		diffuse *= sheenEnergyComp;
+	#endif
+	reflectedLight.indirectDiffuse += diffuse;
+}
+void RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {
+	#ifdef USE_CLEARCOAT
+		clearcoatSpecularIndirect += clearcoatRadiance * EnvironmentBRDF( geometryClearcoatNormal, geometryViewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );
+	#endif
+	#ifdef USE_SHEEN
+		sheenSpecularIndirect += irradiance * material.sheenColor * IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness ) * RECIPROCAL_PI;
+ 	#endif
+	vec3 singleScatteringDielectric = vec3( 0.0 );
+	vec3 multiScatteringDielectric = vec3( 0.0 );
+	vec3 singleScatteringMetallic = vec3( 0.0 );
+	vec3 multiScatteringMetallic = vec3( 0.0 );
+	#ifdef USE_IRIDESCENCE
+		computeMultiscatteringIridescence( material.dfg, material.specularColor, material.specularF90, material.iridescence, material.iridescenceF0Dielectric, singleScatteringDielectric, multiScatteringDielectric );
+		computeMultiscatteringIridescence( material.dfg, material.diffuseColor, material.specularF90, material.iridescence, material.iridescenceF0Metallic, singleScatteringMetallic, multiScatteringMetallic );
+	#else
+		computeMultiscattering( material.dfg, material.specularColor, material.specularF90, singleScatteringDielectric, multiScatteringDielectric );
+		computeMultiscattering( material.dfg, material.diffuseColor, material.specularF90, singleScatteringMetallic, multiScatteringMetallic );
+	#endif
+	vec3 singleScattering = mix( singleScatteringDielectric, singleScatteringMetallic, material.metalness );
+	vec3 multiScattering = mix( multiScatteringDielectric, multiScatteringMetallic, material.metalness );
+	vec3 totalScatteringDielectric = singleScatteringDielectric + multiScatteringDielectric;
+	vec3 diffuse = material.diffuseContribution * ( 1.0 - totalScatteringDielectric );
+	vec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;
+	vec3 indirectSpecular = radiance * singleScattering;
+	indirectSpecular += multiScattering * cosineWeightedIrradiance;
+	vec3 indirectDiffuse = diffuse * cosineWeightedIrradiance;
+	#ifdef USE_SHEEN
+		float sheenAlbedo = IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );
+		float sheenEnergyComp = 1.0 - max3( material.sheenColor ) * sheenAlbedo;
+		indirectSpecular *= sheenEnergyComp;
+		indirectDiffuse *= sheenEnergyComp;
+	#endif
+	reflectedLight.indirectSpecular += indirectSpecular;
+	reflectedLight.indirectDiffuse += indirectDiffuse;
+}
+#define RE_Direct				RE_Direct_Physical
+#define RE_Direct_RectArea		RE_Direct_RectArea_Physical
+#define RE_IndirectDiffuse		RE_IndirectDiffuse_Physical
+#define RE_IndirectSpecular		RE_IndirectSpecular_Physical
+float computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {
+	return saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );
+}`,Sy=`
+vec3 geometryPosition = - vViewPosition;
+vec3 geometryNormal = normal;
+vec3 geometryViewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );
+vec3 geometryClearcoatNormal = vec3( 0.0 );
+#ifdef USE_CLEARCOAT
+	geometryClearcoatNormal = clearcoatNormal;
+#endif
+#ifdef USE_IRIDESCENCE
+	float dotNVi = saturate( dot( normal, geometryViewDir ) );
+	if ( material.iridescenceThickness == 0.0 ) {
+		material.iridescence = 0.0;
+	} else {
+		material.iridescence = saturate( material.iridescence );
+	}
+	if ( material.iridescence > 0.0 ) {
+		vec3 iridescenceFresnelDielectric = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );
+		vec3 iridescenceFresnelMetallic = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.diffuseColor );
+		material.iridescenceFresnel = mix( iridescenceFresnelDielectric, iridescenceFresnelMetallic, material.metalness );
+		material.iridescenceF0Dielectric = Schlick_to_F0( iridescenceFresnelDielectric, 1.0, dotNVi );
+		material.iridescenceF0Metallic = Schlick_to_F0( iridescenceFresnelMetallic, 1.0, dotNVi );
+	}
+#endif
+#ifdef STANDARD
+	float dotNVms = saturate( dot( geometryNormal, geometryViewDir ) );
+	material.dfg = texture2D( dfgLUT, vec2( material.roughness, dotNVms ) ).rg;
+	#if ( NUM_SUN_LIGHTS > 0 || NUM_DIR_LIGHTS > 0 || NUM_POINT_LIGHTS > 0 || NUM_SPOT_LIGHTS > 0 )
+		float EssMs = material.dfg.x + material.dfg.y;
+		material.multiScatteringCompensation = 1.0 + material.specularColorBlended * ( 1.0 / EssMs - 1.0 );
+	#endif
+#endif
+IncidentLight directLight;
+#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )
+	PointLight pointLight;
+	#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0
+	PointLightShadow pointLightShadow;
+	#endif
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {
+		pointLight = pointLights[ i ];
+		getPointLightInfo( pointLight, geometryPosition, directLight );
+		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS ) && ( defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_BASIC ) )
+		pointLightShadow = pointLightShadows[ i ];
+		directLight.color *= ( directLight.visible && receiveShadow ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowIntensity, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;
+		#endif
+		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+	}
+	#pragma unroll_loop_end
+#endif
+#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )
+	SpotLight spotLight;
+	vec4 spotColor;
+	vec3 spotLightCoord;
+	bool inSpotLightMap;
+	#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0
+	SpotLightShadow spotLightShadow;
+	#endif
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {
+		spotLight = spotLights[ i ];
+		getSpotLightInfo( spotLight, geometryPosition, directLight );
+		#if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )
+		#define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX
+		#elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
+		#define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS
+		#else
+		#define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )
+		#endif
+		#if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )
+			spotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;
+			inSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );
+			spotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );
+			directLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;
+		#endif
+		#undef SPOT_LIGHT_MAP_INDEX
+		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
+		spotLightShadow = spotLightShadows[ i ];
+		directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowIntensity, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;
+		#endif
+		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+	}
+	#pragma unroll_loop_end
+#endif
+#if ( NUM_SUN_LIGHTS > 0 ) && defined( RE_Direct )
+	SunLight sunLight;
+	#if defined( USE_SHADOWMAP ) && NUM_SUN_LIGHT_SHADOWS > 0
+	SunLightShadow sunLightShadow;
+	#endif
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_SUN_LIGHTS; i ++ ) {
+		sunLight = sunLights[ i ];
+		getSunLightInfo( sunLight, directLight );
+		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SUN_LIGHT_SHADOWS )
+		sunLightShadow = sunLightShadows[ i ];
+		directLight.color *= ( directLight.visible && receiveShadow ) ? getSunShadow( sunShadowMap[ i ], sunLightShadow, UNROLLED_LOOP_INDEX ) : 1.0;
+		#endif
+		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+	}
+	#pragma unroll_loop_end
+#endif
+#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )
+	DirectionalLight directionalLight;
+	#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0
+	DirectionalLightShadow directionalLightShadow;
+	#endif
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {
+		directionalLight = directionalLights[ i ];
+		getDirectionalLightInfo( directionalLight, directLight );
+		#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )
+		directionalLightShadow = directionalLightShadows[ i ];
+		directLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowIntensity, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
+		#endif
+		RE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+	}
+	#pragma unroll_loop_end
+#endif
+#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )
+	RectAreaLight rectAreaLight;
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {
+		rectAreaLight = rectAreaLights[ i ];
+		RE_Direct_RectArea( rectAreaLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+	}
+	#pragma unroll_loop_end
+#endif
+#if defined( RE_IndirectDiffuse )
+	vec3 iblIrradiance = vec3( 0.0 );
+	vec3 irradiance = getAmbientLightIrradiance( ambientLightColor );
+	#if defined( USE_LIGHT_PROBES )
+		irradiance += getLightProbeIrradiance( lightProbe, geometryNormal );
+	#endif
+	#if ( NUM_HEMI_LIGHTS > 0 )
+		#pragma unroll_loop_start
+		for ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {
+			irradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometryNormal );
+		}
+		#pragma unroll_loop_end
+	#endif
+	#ifdef USE_LIGHT_PROBES_GRID
+		vec3 probeWorldPos = ( ( vec4( geometryPosition, 1.0 ) - viewMatrix[ 3 ] ) * viewMatrix ).xyz;
+		vec3 probeWorldNormal = transformNormalByInverseViewMatrix( geometryNormal, viewMatrix );
+		irradiance += getLightProbeGridIrradiance( probeWorldPos, probeWorldNormal );
+	#endif
+#endif
+#if defined( RE_IndirectSpecular )
+	vec3 radiance = vec3( 0.0 );
+	vec3 clearcoatRadiance = vec3( 0.0 );
+#endif`,by=`#if defined( RE_IndirectDiffuse )
+	#ifdef USE_LIGHTMAP
+		vec4 lightMapTexel = texture2D( lightMap, vLightMapUv );
+		vec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;
+		irradiance += lightMapIrradiance;
+	#endif
+	#if defined( USE_ENVMAP ) && defined( ENVMAP_TYPE_CUBE_UV )
+		#if defined( STANDARD ) || defined( LAMBERT ) || defined( PHONG )
+			iblIrradiance += getIBLIrradiance( geometryNormal );
+		#endif
+	#endif
+#endif
+#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )
+	#ifdef USE_ANISOTROPY
+		vec3 iblRadiance = getIBLAnisotropyRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );
+	#else
+		vec3 iblRadiance = getIBLRadiance( geometryViewDir, geometryNormal, material.roughness );
+	#endif
+	#ifdef USE_RETROREFLECTION
+		#ifdef USE_ANISOTROPY
+			vec3 retroIBLRadiance = getIBLAnisotropyRetroRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );
+		#else
+			vec3 retroIBLRadiance = getIBLRetroRadiance( geometryViewDir, geometryNormal, material.roughness );
+		#endif
+		iblRadiance = mix( iblRadiance, retroIBLRadiance, saturate( material.retroreflectivity ) );
+	#endif
+	radiance += iblRadiance;
+	#ifdef USE_CLEARCOAT
+		clearcoatRadiance += getIBLRadiance( geometryViewDir, geometryClearcoatNormal, material.clearcoatRoughness );
+	#endif
+#endif`,Ty=`#if defined( RE_IndirectDiffuse )
+	#if defined( LAMBERT ) || defined( PHONG )
+		irradiance += iblIrradiance;
+	#endif
+	RE_IndirectDiffuse( irradiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+#endif
+#if defined( RE_IndirectSpecular )
+	RE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );
+#endif`,Ay=`#ifdef USE_LIGHT_PROBES_GRID
+uniform highp sampler3D probesSH;
+uniform vec3 probesMin;
+uniform vec3 probesMax;
+uniform vec3 probesResolution;
+vec3 getLightProbeGridIrradiance( vec3 worldPos, vec3 worldNormal ) {
+	vec3 res = probesResolution;
+	vec3 gridRange = probesMax - probesMin;
+	vec3 resMinusOne = res - 1.0;
+	vec3 probeSpacing = gridRange / resMinusOne;
+	vec3 samplePos = worldPos + worldNormal * probeSpacing * 0.5;
+	vec3 uvw = clamp( ( samplePos - probesMin ) / gridRange, 0.0, 1.0 );
+	uvw = uvw * resMinusOne / res + 0.5 / res;
+	float nz          = res.z;
+	float paddedSlices = nz + 2.0;
+	float atlasDepth  = 7.0 * paddedSlices;
+	float uvZBase     = uvw.z * nz + 1.0;
+	vec4 s0 = texture( probesSH, vec3( uvw.xy, ( uvZBase                       ) / atlasDepth ) );
+	vec4 s1 = texture( probesSH, vec3( uvw.xy, ( uvZBase +       paddedSlices   ) / atlasDepth ) );
+	vec4 s2 = texture( probesSH, vec3( uvw.xy, ( uvZBase + 2.0 * paddedSlices   ) / atlasDepth ) );
+	vec4 s3 = texture( probesSH, vec3( uvw.xy, ( uvZBase + 3.0 * paddedSlices   ) / atlasDepth ) );
+	vec4 s4 = texture( probesSH, vec3( uvw.xy, ( uvZBase + 4.0 * paddedSlices   ) / atlasDepth ) );
+	vec4 s5 = texture( probesSH, vec3( uvw.xy, ( uvZBase + 5.0 * paddedSlices   ) / atlasDepth ) );
+	vec4 s6 = texture( probesSH, vec3( uvw.xy, ( uvZBase + 6.0 * paddedSlices   ) / atlasDepth ) );
+	vec3 c0 = s0.xyz;
+	vec3 c1 = vec3( s0.w, s1.xy );
+	vec3 c2 = vec3( s1.zw, s2.x );
+	vec3 c3 = s2.yzw;
+	vec3 c4 = s3.xyz;
+	vec3 c5 = vec3( s3.w, s4.xy );
+	vec3 c6 = vec3( s4.zw, s5.x );
+	vec3 c7 = s5.yzw;
+	vec3 c8 = s6.xyz;
+	float x = worldNormal.x, y = worldNormal.y, z = worldNormal.z;
+	vec3 result = c0 * 0.886227;
+	result += c1 * 2.0 * 0.511664 * y;
+	result += c2 * 2.0 * 0.511664 * z;
+	result += c3 * 2.0 * 0.511664 * x;
+	result += c4 * 2.0 * 0.429043 * x * y;
+	result += c5 * 2.0 * 0.429043 * y * z;
+	result += c6 * ( 0.743125 * z * z - 0.247708 );
+	result += c7 * 2.0 * 0.429043 * x * z;
+	result += c8 * 0.429043 * ( x * x - y * y );
+	return max( result, vec3( 0.0 ) );
+}
+#endif`,Ey=`#if defined( USE_LOGARITHMIC_DEPTH_BUFFER )
+	gl_FragDepth = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;
+#endif`,wy=`#if defined( USE_LOGARITHMIC_DEPTH_BUFFER )
+	uniform float logDepthBufFC;
+	varying float vFragDepth;
+	varying float vIsPerspective;
+#endif`,Ry=`#ifdef USE_LOGARITHMIC_DEPTH_BUFFER
+	varying float vFragDepth;
+	varying float vIsPerspective;
+#endif`,Cy=`#ifdef USE_LOGARITHMIC_DEPTH_BUFFER
+	vFragDepth = 1.0 + gl_Position.w;
+	vIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );
+#endif`,Iy=`#ifdef USE_MAP
+	vec4 sampledDiffuseColor = texture2D( map, vMapUv );
+	#ifdef DECODE_VIDEO_TEXTURE
+		sampledDiffuseColor = sRGBTransferEOTF( sampledDiffuseColor );
+	#endif
+	diffuseColor *= sampledDiffuseColor;
+#endif`,Py=`#ifdef USE_MAP
+	uniform sampler2D map;
+#endif`,Ly=`#if defined( USE_MAP ) || defined( USE_ALPHAMAP )
+	#if defined( USE_POINTS_UV )
+		vec2 uv = vUv;
+	#else
+		vec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;
+	#endif
+#endif
+#ifdef USE_MAP
+	diffuseColor *= texture2D( map, uv );
+#endif
+#ifdef USE_ALPHAMAP
+	diffuseColor.a *= texture2D( alphaMap, uv ).g;
+#endif`,Ny=`#if defined( USE_POINTS_UV )
+	varying vec2 vUv;
+#else
+	#if defined( USE_MAP ) || defined( USE_ALPHAMAP )
+		uniform mat3 uvTransform;
+	#endif
+#endif
+#ifdef USE_MAP
+	uniform sampler2D map;
+#endif
+#ifdef USE_ALPHAMAP
+	uniform sampler2D alphaMap;
+#endif`,Dy=`float metalnessFactor = metalness;
+#ifdef USE_METALNESSMAP
+	vec4 texelMetalness = texture2D( metalnessMap, vMetalnessMapUv );
+	metalnessFactor *= texelMetalness.b;
+#endif`,Uy=`#ifdef USE_METALNESSMAP
+	uniform sampler2D metalnessMap;
+#endif`,Fy=`#ifdef USE_INSTANCING_MORPH
+	float morphTargetInfluences[ MORPHTARGETS_COUNT ];
+	float morphTargetBaseInfluence = texelFetch( morphTexture, ivec2( 0, gl_InstanceID ), 0 ).r;
+	for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {
+		morphTargetInfluences[i] =  texelFetch( morphTexture, ivec2( i + 1, gl_InstanceID ), 0 ).r;
+	}
+#endif`,Oy=`#if defined( USE_MORPHCOLORS )
+	vColor *= morphTargetBaseInfluence;
+	for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {
+		#if defined( USE_COLOR_ALPHA )
+			if ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];
+		#elif defined( USE_COLOR )
+			if ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ];
+		#endif
+	}
+#endif`,By=`#ifdef USE_MORPHNORMALS
+	objectNormal *= morphTargetBaseInfluence;
+	for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {
+		if ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];
+	}
+#endif`,zy=`#ifdef USE_MORPHTARGETS
+	#ifndef USE_INSTANCING_MORPH
+		uniform float morphTargetBaseInfluence;
+		uniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];
+	#endif
+	uniform sampler2DArray morphTargetsTexture;
+	uniform ivec2 morphTargetsTextureSize;
+	vec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {
+		int texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;
+		int y = texelIndex / morphTargetsTextureSize.x;
+		int x = texelIndex - y * morphTargetsTextureSize.x;
+		ivec3 morphUV = ivec3( x, y, morphTargetIndex );
+		return texelFetch( morphTargetsTexture, morphUV, 0 );
+	}
+#endif`,ky=`#ifdef USE_MORPHTARGETS
+	transformed *= morphTargetBaseInfluence;
+	for ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {
+		if ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];
+	}
+#endif`,Vy=`float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;
+#ifdef FLAT_SHADED
+	vec3 fdx = dFdx( vViewPosition );
+	vec3 fdy = dFdy( vViewPosition );
+	vec3 normal = normalize( cross( fdx, fdy ) );
+#else
+	vec3 normal = normalize( vNormal );
+	#ifdef DOUBLE_SIDED
+		normal *= faceDirection;
+	#endif
+#endif
+#if defined( USE_NORMALMAP_TANGENTSPACE ) || defined( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY )
+	#ifdef USE_TANGENT
+		mat3 tbn = mat3( normalize( vTangent ), normalize( vBitangent ), normal );
+	#else
+		mat3 tbn = getTangentFrame( - vViewPosition, normal,
+		#if defined( USE_NORMALMAP )
+			vNormalMapUv
+		#elif defined( USE_CLEARCOAT_NORMALMAP )
+			vClearcoatNormalMapUv
+		#else
+			vUv
+		#endif
+		);
+	#endif
+	#ifdef DOUBLE_SIDED
+		tbn[0] *= faceDirection;
+		tbn[1] *= faceDirection;
+	#endif
+#endif
+#ifdef USE_CLEARCOAT_NORMALMAP
+	#ifdef USE_TANGENT
+		mat3 tbn2 = mat3( normalize( vTangent ), normalize( vBitangent ), normal );
+	#else
+		mat3 tbn2 = getTangentFrame( - vViewPosition, normal, vClearcoatNormalMapUv );
+	#endif
+	#ifdef DOUBLE_SIDED
+		tbn2[0] *= faceDirection;
+		tbn2[1] *= faceDirection;
+	#endif
+#endif
+vec3 nonPerturbedNormal = normal;`,Gy=`#ifdef USE_NORMALMAP_OBJECTSPACE
+	normal = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;
+	#ifdef FLIP_SIDED
+		normal = - normal;
+	#endif
+	#ifdef DOUBLE_SIDED
+		normal = normal * faceDirection;
+	#endif
+	normal = normalize( normalMatrix * normal );
+#elif defined( USE_NORMALMAP_TANGENTSPACE )
+	vec3 mapN = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;
+	#if defined( USE_PACKED_NORMALMAP )
+		mapN = vec3( mapN.xy, sqrt( saturate( 1.0 - dot( mapN.xy, mapN.xy ) ) ) );
+	#endif
+	mapN.xy *= normalScale;
+	normal = normalize( tbn * mapN );
+#elif defined( USE_BUMPMAP )
+	normal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );
+#endif`,Hy=`#ifndef FLAT_SHADED
+	varying vec3 vNormal;
+	#ifdef USE_TANGENT
+		varying vec3 vTangent;
+		varying vec3 vBitangent;
+	#endif
+#endif`,Wy=`#ifndef FLAT_SHADED
+	varying vec3 vNormal;
+	#ifdef USE_TANGENT
+		varying vec3 vTangent;
+		varying vec3 vBitangent;
+	#endif
+#endif`,Xy=`#ifndef FLAT_SHADED
+	vNormal = normalize( transformedNormal );
+	#ifdef USE_TANGENT
+		vTangent = normalize( transformedTangent );
+		vBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );
+		#ifdef FLIP_SIDED
+			vBitangent = - vBitangent;
+		#endif
+	#endif
+#endif`,qy=`#ifdef USE_NORMALMAP
+	uniform sampler2D normalMap;
+	uniform vec2 normalScale;
+#endif
+#ifdef USE_NORMALMAP_OBJECTSPACE
+	uniform mat3 normalMatrix;
+#endif
+#if ! defined ( USE_TANGENT ) && ( defined ( USE_NORMALMAP_TANGENTSPACE ) || defined ( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY ) )
+	mat3 getTangentFrame( vec3 eye_pos, vec3 surf_norm, vec2 uv ) {
+		vec3 q0 = dFdx( eye_pos.xyz );
+		vec3 q1 = dFdy( eye_pos.xyz );
+		vec2 st0 = dFdx( uv.st );
+		vec2 st1 = dFdy( uv.st );
+		vec3 N = surf_norm;
+		vec3 q1perp = cross( q1, N );
+		vec3 q0perp = cross( N, q0 );
+		vec3 T = q1perp * st0.x + q0perp * st1.x;
+		vec3 B = q1perp * st0.y + q0perp * st1.y;
+		float det = max( dot( T, T ), dot( B, B ) );
+		float scale = ( det == 0.0 ) ? 0.0 : inversesqrt( det );
+		return mat3( T * scale, B * scale, N );
+	}
+#endif`,Yy=`#ifdef USE_CLEARCOAT
+	vec3 clearcoatNormal = nonPerturbedNormal;
+#endif`,Zy=`#ifdef USE_CLEARCOAT_NORMALMAP
+	vec3 clearcoatMapN = texture2D( clearcoatNormalMap, vClearcoatNormalMapUv ).xyz * 2.0 - 1.0;
+	clearcoatMapN.xy *= clearcoatNormalScale;
+	clearcoatNormal = normalize( tbn2 * clearcoatMapN );
+#endif`,Ky=`#ifdef USE_CLEARCOATMAP
+	uniform sampler2D clearcoatMap;
+#endif
+#ifdef USE_CLEARCOAT_NORMALMAP
+	uniform sampler2D clearcoatNormalMap;
+	uniform vec2 clearcoatNormalScale;
+#endif
+#ifdef USE_CLEARCOAT_ROUGHNESSMAP
+	uniform sampler2D clearcoatRoughnessMap;
+#endif`,Jy=`#ifdef USE_IRIDESCENCEMAP
+	uniform sampler2D iridescenceMap;
+#endif
+#ifdef USE_IRIDESCENCE_THICKNESSMAP
+	uniform sampler2D iridescenceThicknessMap;
+#endif`,jy=`#ifdef OPAQUE
+diffuseColor.a = 1.0;
+#endif
+#ifdef USE_TRANSMISSION
+diffuseColor.a *= material.transmissionAlpha;
+#endif
+gl_FragColor = vec4( outgoingLight, diffuseColor.a );`,$y=`vec3 packNormalToRGB( const in vec3 normal ) {
+	return normalize( normal ) * 0.5 + 0.5;
+}
+vec3 unpackRGBToNormal( const in vec3 rgb ) {
+	return 2.0 * rgb.xyz - 1.0;
+}
+const float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;const float ShiftRight8 = 1. / 256.;
+const float Inv255 = 1. / 255.;
+const vec4 PackFactors = vec4( 1.0, 256.0, 256.0 * 256.0, 256.0 * 256.0 * 256.0 );
+const vec2 UnpackFactors2 = vec2( UnpackDownscale, 1.0 / PackFactors.g );
+const vec3 UnpackFactors3 = vec3( UnpackDownscale / PackFactors.rg, 1.0 / PackFactors.b );
+const vec4 UnpackFactors4 = vec4( UnpackDownscale / PackFactors.rgb, 1.0 / PackFactors.a );
+vec4 packDepthToRGBA( const in float v ) {
+	if( v <= 0.0 )
+		return vec4( 0., 0., 0., 0. );
+	if( v >= 1.0 )
+		return vec4( 1., 1., 1., 1. );
+	float vuf;
+	float af = modf( v * PackFactors.a, vuf );
+	float bf = modf( vuf * ShiftRight8, vuf );
+	float gf = modf( vuf * ShiftRight8, vuf );
+	return vec4( vuf * Inv255, gf * PackUpscale, bf * PackUpscale, af );
+}
+vec3 packDepthToRGB( const in float v ) {
+	if( v <= 0.0 )
+		return vec3( 0., 0., 0. );
+	if( v >= 1.0 )
+		return vec3( 1., 1., 1. );
+	float vuf;
+	float bf = modf( v * PackFactors.b, vuf );
+	float gf = modf( vuf * ShiftRight8, vuf );
+	return vec3( vuf * Inv255, gf * PackUpscale, bf );
+}
+vec2 packDepthToRG( const in float v ) {
+	if( v <= 0.0 )
+		return vec2( 0., 0. );
+	if( v >= 1.0 )
+		return vec2( 1., 1. );
+	float vuf;
+	float gf = modf( v * 256., vuf );
+	return vec2( vuf * Inv255, gf );
+}
+float unpackRGBAToDepth( const in vec4 v ) {
+	return dot( v, UnpackFactors4 );
+}
+float unpackRGBToDepth( const in vec3 v ) {
+	return dot( v, UnpackFactors3 );
+}
+float unpackRGToDepth( const in vec2 v ) {
+	return v.r * UnpackFactors2.r + v.g * UnpackFactors2.g;
+}
+vec4 pack2HalfToRGBA( const in vec2 v ) {
+	vec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );
+	return vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );
+}
+vec2 unpackRGBATo2Half( const in vec4 v ) {
+	return vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );
+}
+float viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {
+	return ( viewZ + near ) / ( near - far );
+}
+float orthographicDepthToViewZ( const in float depth, const in float near, const in float far ) {
+	#ifdef USE_REVERSED_DEPTH_BUFFER
+	
+		return depth * ( far - near ) - far;
+	#else
+		return depth * ( near - far ) - near;
+	#endif
+}
+float viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {
+	return ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );
+}
+float perspectiveDepthToViewZ( const in float depth, const in float near, const in float far ) {
+	
+	#ifdef USE_REVERSED_DEPTH_BUFFER
+		return ( near * far ) / ( ( near - far ) * depth - near );
+	#else
+		return ( near * far ) / ( ( far - near ) * depth - far );
+	#endif
+}`,Qy=`#ifdef PREMULTIPLIED_ALPHA
+	gl_FragColor.rgb *= gl_FragColor.a;
+#endif`,ev=`vec4 mvPosition = vec4( transformed, 1.0 );
+#ifdef USE_BATCHING
+	mvPosition = batchingMatrix * mvPosition;
+#endif
+#ifdef USE_INSTANCING
+	mvPosition = instanceMatrix * mvPosition;
+#endif
+mvPosition = modelViewMatrix * mvPosition;
+gl_Position = projectionMatrix * mvPosition;`,tv=`#ifdef DITHERING
+	gl_FragColor.rgb = dithering( gl_FragColor.rgb );
+#endif`,nv=`#ifdef DITHERING
+	vec3 dithering( vec3 color ) {
+		float grid_position = rand( gl_FragCoord.xy );
+		vec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );
+		dither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );
+		return color + dither_shift_RGB;
+	}
+#endif`,iv=`float roughnessFactor = roughness;
+#ifdef USE_ROUGHNESSMAP
+	vec4 texelRoughness = texture2D( roughnessMap, vRoughnessMapUv );
+	roughnessFactor *= texelRoughness.g;
+#endif`,sv=`#ifdef USE_ROUGHNESSMAP
+	uniform sampler2D roughnessMap;
+#endif`,rv=`#if NUM_SPOT_LIGHT_COORDS > 0
+	varying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];
+#endif
+#if NUM_SPOT_LIGHT_MAPS > 0
+	uniform sampler2D spotLightMap[ NUM_SPOT_LIGHT_MAPS ];
+#endif
+#ifdef USE_SHADOWMAP
+	#if NUM_SUN_LIGHT_SHADOWS > 0
+		#define SUN_LIGHT_CASCADES 2
+		#if defined( SHADOWMAP_TYPE_PCF )
+			uniform sampler2DShadow sunShadowMap[ NUM_SUN_LIGHT_SHADOWS ];
+		#else
+			uniform sampler2D sunShadowMap[ NUM_SUN_LIGHT_SHADOWS ];
+		#endif
+		uniform mat4 sunShadowMatrix[ NUM_SUN_LIGHT_SHADOWS * SUN_LIGHT_CASCADES ];
+		uniform vec4 sunShadowCascade[ NUM_SUN_LIGHT_SHADOWS * SUN_LIGHT_CASCADES ];
+		varying vec4 vSunShadowWorldPosition;
+		varying vec3 vSunShadowWorldNormal;
+		struct SunLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+		};
+		uniform SunLightShadow sunLightShadows[ NUM_SUN_LIGHT_SHADOWS ];
+	#endif
+	#if NUM_DIR_LIGHT_SHADOWS > 0
+		#if defined( SHADOWMAP_TYPE_PCF )
+			uniform sampler2DShadow directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];
+		#else
+			uniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];
+		#endif
+		varying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];
+		struct DirectionalLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+		};
+		uniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];
+	#endif
+	#if NUM_SPOT_LIGHT_SHADOWS > 0
+		#if defined( SHADOWMAP_TYPE_PCF )
+			uniform sampler2DShadow spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];
+		#else
+			uniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];
+		#endif
+		struct SpotLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+		};
+		uniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];
+	#endif
+	#if NUM_POINT_LIGHT_SHADOWS > 0
+		#if defined( SHADOWMAP_TYPE_PCF )
+			uniform samplerCubeShadow pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];
+		#elif defined( SHADOWMAP_TYPE_BASIC )
+			uniform samplerCube pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];
+		#endif
+		varying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];
+		struct PointLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+			float shadowCameraNear;
+			float shadowCameraFar;
+		};
+		uniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];
+	#endif
+	#if defined( SHADOWMAP_TYPE_PCF )
+		float interleavedGradientNoise( vec2 position ) {
+			return fract( 52.9829189 * fract( dot( position, vec2( 0.06711056, 0.00583715 ) ) ) );
+		}
+		vec2 vogelDiskSample( int sampleIndex, int samplesCount, float phi ) {
+			const float goldenAngle = 2.399963229728653;
+			float r = sqrt( ( float( sampleIndex ) + 0.5 ) / float( samplesCount ) );
+			float theta = float( sampleIndex ) * goldenAngle + phi;
+			return vec2( cos( theta ), sin( theta ) ) * r;
+		}
+	#endif
+	#if defined( SHADOWMAP_TYPE_PCF )
+		float getShadow( sampler2DShadow shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord ) {
+			float shadow = 1.0;
+			shadowCoord.xyz /= shadowCoord.w;
+			shadowCoord.z += shadowBias;
+			bool inFrustum = shadowCoord.x >= 0.0 && shadowCoord.x <= 1.0 && shadowCoord.y >= 0.0 && shadowCoord.y <= 1.0;
+			bool frustumTest = inFrustum && shadowCoord.z <= 1.0;
+			if ( frustumTest ) {
+				vec2 texelSize = vec2( 1.0 ) / shadowMapSize;
+				float radius = shadowRadius * texelSize.x;
+				float phi = interleavedGradientNoise( gl_FragCoord.xy ) * PI2;
+				shadow = (
+					texture( shadowMap, vec3( shadowCoord.xy + vogelDiskSample( 0, 5, phi ) * radius, shadowCoord.z ) ) +
+					texture( shadowMap, vec3( shadowCoord.xy + vogelDiskSample( 1, 5, phi ) * radius, shadowCoord.z ) ) +
+					texture( shadowMap, vec3( shadowCoord.xy + vogelDiskSample( 2, 5, phi ) * radius, shadowCoord.z ) ) +
+					texture( shadowMap, vec3( shadowCoord.xy + vogelDiskSample( 3, 5, phi ) * radius, shadowCoord.z ) ) +
+					texture( shadowMap, vec3( shadowCoord.xy + vogelDiskSample( 4, 5, phi ) * radius, shadowCoord.z ) )
+				) * 0.2;
+			}
+			return mix( 1.0, shadow, shadowIntensity );
+		}
+	#elif defined( SHADOWMAP_TYPE_VSM )
+		float getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord ) {
+			float shadow = 1.0;
+			shadowCoord.xyz /= shadowCoord.w;
+			#ifdef USE_REVERSED_DEPTH_BUFFER
+				shadowCoord.z -= shadowBias;
+			#else
+				shadowCoord.z += shadowBias;
+			#endif
+			bool inFrustum = shadowCoord.x >= 0.0 && shadowCoord.x <= 1.0 && shadowCoord.y >= 0.0 && shadowCoord.y <= 1.0;
+			bool frustumTest = inFrustum && shadowCoord.z <= 1.0;
+			if ( frustumTest ) {
+				vec2 distribution = texture2D( shadowMap, shadowCoord.xy ).rg;
+				float mean = distribution.x;
+				float variance = distribution.y * distribution.y;
+				#ifdef USE_REVERSED_DEPTH_BUFFER
+					float hard_shadow = step( mean, shadowCoord.z );
+				#else
+					float hard_shadow = step( shadowCoord.z, mean );
+				#endif
+				
+				if ( hard_shadow == 1.0 ) {
+					shadow = 1.0;
+				} else {
+					variance = max( variance, 0.0000001 );
+					float d = shadowCoord.z - mean;
+					float p_max = variance / ( variance + d * d );
+					p_max = clamp( ( p_max - 0.3 ) / 0.65, 0.0, 1.0 );
+					shadow = max( hard_shadow, p_max );
+				}
+			}
+			return mix( 1.0, shadow, shadowIntensity );
+		}
+	#else
+		float getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord ) {
+			float shadow = 1.0;
+			shadowCoord.xyz /= shadowCoord.w;
+			#ifdef USE_REVERSED_DEPTH_BUFFER
+				shadowCoord.z -= shadowBias;
+			#else
+				shadowCoord.z += shadowBias;
+			#endif
+			bool inFrustum = shadowCoord.x >= 0.0 && shadowCoord.x <= 1.0 && shadowCoord.y >= 0.0 && shadowCoord.y <= 1.0;
+			bool frustumTest = inFrustum && shadowCoord.z <= 1.0;
+			if ( frustumTest ) {
+				float depth = texture2D( shadowMap, shadowCoord.xy ).r;
+				#ifdef USE_REVERSED_DEPTH_BUFFER
+					shadow = step( depth, shadowCoord.z );
+				#else
+					shadow = step( shadowCoord.z, depth );
+				#endif
+			}
+			return mix( 1.0, shadow, shadowIntensity );
+		}
+	#endif
+	#if NUM_SUN_LIGHT_SHADOWS > 0
+		float getSunShadow(
+			#if defined( SHADOWMAP_TYPE_PCF )
+				sampler2DShadow shadowMap,
+			#else
+				sampler2D shadowMap,
+			#endif
+			SunLightShadow sunLightShadow,
+			int shadowIndex
+		) {
+			vec4 shadowWorldPosition = vec4( vSunShadowWorldPosition.xyz + vSunShadowWorldNormal * sunLightShadow.shadowNormalBias, 1.0 );
+			float viewDepth = vSunShadowWorldPosition.w;
+			int cascadeOffset = shadowIndex * SUN_LIGHT_CASCADES;
+			float shadow = 1.0;
+			for ( int i = SUN_LIGHT_CASCADES - 1; i >= 0; i -- ) {
+				vec4 cascade = sunShadowCascade[ cascadeOffset + i ];
+				if ( viewDepth >= cascade.x && viewDepth < cascade.y ) {
+					float cascadeShadow = getShadow(
+						shadowMap,
+						sunLightShadow.shadowMapSize,
+						sunLightShadow.shadowIntensity,
+						sunLightShadow.shadowBias,
+						sunLightShadow.shadowRadius,
+						sunShadowMatrix[ cascadeOffset + i ] * shadowWorldPosition
+					);
+					shadow = mix( cascadeShadow, shadow, smoothstep( cascade.z, cascade.y, viewDepth ) );
+				}
+			}
+			return shadow;
+		}
+	#endif
+	#if NUM_POINT_LIGHT_SHADOWS > 0
+	#if defined( SHADOWMAP_TYPE_PCF )
+	float getPointShadow( samplerCubeShadow shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {
+		float shadow = 1.0;
+		vec3 lightToPosition = shadowCoord.xyz;
+		vec3 bd3D = normalize( lightToPosition );
+		vec3 absVec = abs( lightToPosition );
+		float viewSpaceZ = max( max( absVec.x, absVec.y ), absVec.z );
+		if ( viewSpaceZ - shadowCameraFar <= 0.0 && viewSpaceZ - shadowCameraNear >= 0.0 ) {
+			#ifdef USE_REVERSED_DEPTH_BUFFER
+				float dp = ( shadowCameraNear * ( shadowCameraFar - viewSpaceZ ) ) / ( viewSpaceZ * ( shadowCameraFar - shadowCameraNear ) );
+				dp -= shadowBias;
+			#else
+				float dp = ( shadowCameraFar * ( viewSpaceZ - shadowCameraNear ) ) / ( viewSpaceZ * ( shadowCameraFar - shadowCameraNear ) );
+				dp += shadowBias;
+			#endif
+			float texelSize = shadowRadius / shadowMapSize.x;
+			vec3 absDir = abs( bd3D );
+			vec3 tangent = absDir.x > absDir.z ? vec3( 0.0, 1.0, 0.0 ) : vec3( 1.0, 0.0, 0.0 );
+			tangent = normalize( cross( bd3D, tangent ) );
+			vec3 bitangent = cross( bd3D, tangent );
+			float phi = interleavedGradientNoise( gl_FragCoord.xy ) * PI2;
+			vec2 sample0 = vogelDiskSample( 0, 5, phi );
+			vec2 sample1 = vogelDiskSample( 1, 5, phi );
+			vec2 sample2 = vogelDiskSample( 2, 5, phi );
+			vec2 sample3 = vogelDiskSample( 3, 5, phi );
+			vec2 sample4 = vogelDiskSample( 4, 5, phi );
+			shadow = (
+				texture( shadowMap, vec4( bd3D + ( tangent * sample0.x + bitangent * sample0.y ) * texelSize, dp ) ) +
+				texture( shadowMap, vec4( bd3D + ( tangent * sample1.x + bitangent * sample1.y ) * texelSize, dp ) ) +
+				texture( shadowMap, vec4( bd3D + ( tangent * sample2.x + bitangent * sample2.y ) * texelSize, dp ) ) +
+				texture( shadowMap, vec4( bd3D + ( tangent * sample3.x + bitangent * sample3.y ) * texelSize, dp ) ) +
+				texture( shadowMap, vec4( bd3D + ( tangent * sample4.x + bitangent * sample4.y ) * texelSize, dp ) )
+			) * 0.2;
+		}
+		return mix( 1.0, shadow, shadowIntensity );
+	}
+	#elif defined( SHADOWMAP_TYPE_BASIC )
+	float getPointShadow( samplerCube shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {
+		float shadow = 1.0;
+		vec3 lightToPosition = shadowCoord.xyz;
+		vec3 absVec = abs( lightToPosition );
+		float viewSpaceZ = max( max( absVec.x, absVec.y ), absVec.z );
+		if ( viewSpaceZ - shadowCameraFar <= 0.0 && viewSpaceZ - shadowCameraNear >= 0.0 ) {
+			float dp = ( shadowCameraFar * ( viewSpaceZ - shadowCameraNear ) ) / ( viewSpaceZ * ( shadowCameraFar - shadowCameraNear ) );
+			dp += shadowBias;
+			vec3 bd3D = normalize( lightToPosition );
+			float depth = textureCube( shadowMap, bd3D ).r;
+			#ifdef USE_REVERSED_DEPTH_BUFFER
+				depth = 1.0 - depth;
+			#endif
+			shadow = step( dp, depth );
+		}
+		return mix( 1.0, shadow, shadowIntensity );
+	}
+	#endif
+	#endif
+#endif`,ov=`#if NUM_SPOT_LIGHT_COORDS > 0
+	uniform mat4 spotLightMatrix[ NUM_SPOT_LIGHT_COORDS ];
+	varying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];
+#endif
+#ifdef USE_SHADOWMAP
+	#if NUM_SUN_LIGHT_SHADOWS > 0
+		varying vec4 vSunShadowWorldPosition;
+		varying vec3 vSunShadowWorldNormal;
+	#endif
+	#if NUM_DIR_LIGHT_SHADOWS > 0
+		uniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];
+		varying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];
+		struct DirectionalLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+		};
+		uniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];
+	#endif
+	#if NUM_SPOT_LIGHT_SHADOWS > 0
+		struct SpotLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+		};
+		uniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];
+	#endif
+	#if NUM_POINT_LIGHT_SHADOWS > 0
+		uniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];
+		varying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];
+		struct PointLightShadow {
+			float shadowIntensity;
+			float shadowBias;
+			float shadowNormalBias;
+			float shadowRadius;
+			vec2 shadowMapSize;
+			float shadowCameraNear;
+			float shadowCameraFar;
+		};
+		uniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];
+	#endif
+#endif`,av=`#if ( defined( USE_SHADOWMAP ) && ( NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SUN_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0 ) ) || ( NUM_SPOT_LIGHT_COORDS > 0 )
+	#ifdef HAS_NORMAL
+		vec3 shadowWorldNormal = transformNormalByInverseViewMatrix( transformedNormal, viewMatrix );
+	#else
+		vec3 shadowWorldNormal = vec3( 0.0 );
+	#endif
+	vec4 shadowWorldPosition;
+#endif
+#if defined( USE_SHADOWMAP )
+	#if NUM_SUN_LIGHT_SHADOWS > 0
+		vSunShadowWorldPosition = vec4( worldPosition.xyz, - mvPosition.z );
+		vSunShadowWorldNormal = shadowWorldNormal;
+	#endif
+	#if NUM_DIR_LIGHT_SHADOWS > 0
+		#pragma unroll_loop_start
+		for ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {
+			shadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );
+			vDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;
+		}
+		#pragma unroll_loop_end
+	#endif
+	#if NUM_POINT_LIGHT_SHADOWS > 0
+		#pragma unroll_loop_start
+		for ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {
+			shadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );
+			vPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;
+		}
+		#pragma unroll_loop_end
+	#endif
+#endif
+#if NUM_SPOT_LIGHT_COORDS > 0
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_SPOT_LIGHT_COORDS; i ++ ) {
+		shadowWorldPosition = worldPosition;
+		#if ( defined( USE_SHADOWMAP ) && UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )
+			shadowWorldPosition.xyz += shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias;
+		#endif
+		vSpotLightCoord[ i ] = spotLightMatrix[ i ] * shadowWorldPosition;
+	}
+	#pragma unroll_loop_end
+#endif`,lv=`float getShadowMask() {
+	float shadow = 1.0;
+	#ifdef USE_SHADOWMAP
+	#if NUM_SUN_LIGHT_SHADOWS > 0
+	SunLightShadow sunLight;
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_SUN_LIGHT_SHADOWS; i ++ ) {
+		sunLight = sunLightShadows[ i ];
+		shadow *= receiveShadow ? getSunShadow( sunShadowMap[ i ], sunLight, UNROLLED_LOOP_INDEX ) : 1.0;
+	}
+	#pragma unroll_loop_end
+	#endif
+	#if NUM_DIR_LIGHT_SHADOWS > 0
+	DirectionalLightShadow directionalLight;
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {
+		directionalLight = directionalLightShadows[ i ];
+		shadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowIntensity, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
+	}
+	#pragma unroll_loop_end
+	#endif
+	#if NUM_SPOT_LIGHT_SHADOWS > 0
+	SpotLightShadow spotLight;
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {
+		spotLight = spotLightShadows[ i ];
+		shadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowIntensity, spotLight.shadowBias, spotLight.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;
+	}
+	#pragma unroll_loop_end
+	#endif
+	#if NUM_POINT_LIGHT_SHADOWS > 0 && ( defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_BASIC ) )
+	PointLightShadow pointLight;
+	#pragma unroll_loop_start
+	for ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {
+		pointLight = pointLightShadows[ i ];
+		shadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowIntensity, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;
+	}
+	#pragma unroll_loop_end
+	#endif
+	#endif
+	return shadow;
+}`,cv=`#ifdef USE_SKINNING
+	mat4 boneMatX = getBoneMatrix( skinIndex.x );
+	mat4 boneMatY = getBoneMatrix( skinIndex.y );
+	mat4 boneMatZ = getBoneMatrix( skinIndex.z );
+	mat4 boneMatW = getBoneMatrix( skinIndex.w );
+#endif`,hv=`#ifdef USE_SKINNING
+	uniform mat4 bindMatrix;
+	uniform mat4 bindMatrixInverse;
+	uniform highp sampler2D boneTexture;
+	mat4 getBoneMatrix( const in float i ) {
+		int size = textureSize( boneTexture, 0 ).x;
+		int j = int( i ) * 4;
+		int x = j % size;
+		int y = j / size;
+		vec4 v1 = texelFetch( boneTexture, ivec2( x, y ), 0 );
+		vec4 v2 = texelFetch( boneTexture, ivec2( x + 1, y ), 0 );
+		vec4 v3 = texelFetch( boneTexture, ivec2( x + 2, y ), 0 );
+		vec4 v4 = texelFetch( boneTexture, ivec2( x + 3, y ), 0 );
+		return mat4( v1, v2, v3, v4 );
+	}
+#endif`,uv=`#ifdef USE_SKINNING
+	vec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );
+	vec4 skinned = vec4( 0.0 );
+	skinned += boneMatX * skinVertex * skinWeight.x;
+	skinned += boneMatY * skinVertex * skinWeight.y;
+	skinned += boneMatZ * skinVertex * skinWeight.z;
+	skinned += boneMatW * skinVertex * skinWeight.w;
+	transformed = ( bindMatrixInverse * skinned ).xyz;
+#endif`,dv=`#ifdef USE_SKINNING
+	mat4 skinMatrix = mat4( 0.0 );
+	skinMatrix += skinWeight.x * boneMatX;
+	skinMatrix += skinWeight.y * boneMatY;
+	skinMatrix += skinWeight.z * boneMatZ;
+	skinMatrix += skinWeight.w * boneMatW;
+	skinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;
+	objectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;
+	#ifdef USE_TANGENT
+		objectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;
+	#endif
+#endif`,fv=`float specularStrength;
+#ifdef USE_SPECULARMAP
+	vec4 texelSpecular = texture2D( specularMap, vSpecularMapUv );
+	specularStrength = texelSpecular.r;
+#else
+	specularStrength = 1.0;
+#endif`,pv=`#ifdef USE_SPECULARMAP
+	uniform sampler2D specularMap;
+#endif`,mv=`#if defined( TONE_MAPPING )
+	gl_FragColor.rgb = toneMapping( gl_FragColor.rgb );
+#endif`,gv=`#ifndef saturate
+#define saturate( a ) clamp( a, 0.0, 1.0 )
+#endif
+uniform float toneMappingExposure;
+vec3 LinearToneMapping( vec3 color ) {
+	return saturate( toneMappingExposure * color );
+}
+vec3 ReinhardToneMapping( vec3 color ) {
+	color *= toneMappingExposure;
+	return saturate( color / ( vec3( 1.0 ) + color ) );
+}
+vec3 CineonToneMapping( vec3 color ) {
+	color *= toneMappingExposure;
+	color = max( vec3( 0.0 ), color - 0.004 );
+	return pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );
+}
+vec3 RRTAndODTFit( vec3 v ) {
+	vec3 a = v * ( v + 0.0245786 ) - 0.000090537;
+	vec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;
+	return a / b;
+}
+vec3 ACESFilmicToneMapping( vec3 color ) {
+	const mat3 ACESInputMat = mat3(
+		vec3( 0.59719, 0.07600, 0.02840 ),		vec3( 0.35458, 0.90834, 0.13383 ),
+		vec3( 0.04823, 0.01566, 0.83777 )
+	);
+	const mat3 ACESOutputMat = mat3(
+		vec3(  1.60475, -0.10208, -0.00327 ),		vec3( -0.53108,  1.10813, -0.07276 ),
+		vec3( -0.07367, -0.00605,  1.07602 )
+	);
+	color *= toneMappingExposure / 0.6;
+	color = ACESInputMat * color;
+	color = RRTAndODTFit( color );
+	color = ACESOutputMat * color;
+	return saturate( color );
+}
+const mat3 LINEAR_REC2020_TO_LINEAR_SRGB = mat3(
+	vec3( 1.6605, - 0.1246, - 0.0182 ),
+	vec3( - 0.5876, 1.1329, - 0.1006 ),
+	vec3( - 0.0728, - 0.0083, 1.1187 )
+);
+const mat3 LINEAR_SRGB_TO_LINEAR_REC2020 = mat3(
+	vec3( 0.6274, 0.0691, 0.0164 ),
+	vec3( 0.3293, 0.9195, 0.0880 ),
+	vec3( 0.0433, 0.0113, 0.8956 )
+);
+vec3 agxDefaultContrastApprox( vec3 x ) {
+	vec3 x2 = x * x;
+	vec3 x4 = x2 * x2;
+	return + 15.5 * x4 * x2
+		- 40.14 * x4 * x
+		+ 31.96 * x4
+		- 6.868 * x2 * x
+		+ 0.4298 * x2
+		+ 0.1191 * x
+		- 0.00232;
+}
+vec3 AgXToneMapping( vec3 color ) {
+	const mat3 AgXInsetMatrix = mat3(
+		vec3( 0.856627153315983, 0.137318972929847, 0.11189821299995 ),
+		vec3( 0.0951212405381588, 0.761241990602591, 0.0767994186031903 ),
+		vec3( 0.0482516061458583, 0.101439036467562, 0.811302368396859 )
+	);
+	const mat3 AgXOutsetMatrix = mat3(
+		vec3( 1.1271005818144368, - 0.1413297634984383, - 0.14132976349843826 ),
+		vec3( - 0.11060664309660323, 1.157823702216272, - 0.11060664309660294 ),
+		vec3( - 0.016493938717834573, - 0.016493938717834257, 1.2519364065950405 )
+	);
+	const float AgxMinEv = - 12.47393;	const float AgxMaxEv = 4.026069;
+	color *= toneMappingExposure;
+	color = LINEAR_SRGB_TO_LINEAR_REC2020 * color;
+	color = AgXInsetMatrix * color;
+	color = max( color, 1e-10 );	color = log2( color );
+	color = ( color - AgxMinEv ) / ( AgxMaxEv - AgxMinEv );
+	color = clamp( color, 0.0, 1.0 );
+	color = agxDefaultContrastApprox( color );
+	color = AgXOutsetMatrix * color;
+	color = pow( max( vec3( 0.0 ), color ), vec3( 2.2 ) );
+	color = LINEAR_REC2020_TO_LINEAR_SRGB * color;
+	color = clamp( color, 0.0, 1.0 );
+	return color;
+}
+vec3 NeutralToneMapping( vec3 color ) {
+	const float StartCompression = 0.8 - 0.04;
+	const float Desaturation = 0.15;
+	color *= toneMappingExposure;
+	float x = min( color.r, min( color.g, color.b ) );
+	float offset = x < 0.08 ? x - 6.25 * x * x : 0.04;
+	color -= offset;
+	float peak = max( color.r, max( color.g, color.b ) );
+	if ( peak < StartCompression ) return color;
+	float d = 1. - StartCompression;
+	float newPeak = 1. - d * d / ( peak + d - StartCompression );
+	color *= newPeak / peak;
+	float g = 1. - 1. / ( Desaturation * ( peak - newPeak ) + 1. );
+	return mix( color, vec3( newPeak ), g );
+}
+vec3 CustomToneMapping( vec3 color ) { return color; }`,_v=`#ifdef USE_TRANSMISSION
+	material.transmission = transmission;
+	material.transmissionAlpha = 1.0;
+	material.thickness = thickness;
+	material.attenuationDistance = attenuationDistance;
+	material.attenuationColor = attenuationColor;
+	#ifdef USE_TRANSMISSIONMAP
+		material.transmission *= texture2D( transmissionMap, vTransmissionMapUv ).r;
+	#endif
+	#ifdef USE_THICKNESSMAP
+		material.thickness *= texture2D( thicknessMap, vThicknessMapUv ).g;
+	#endif
+	vec3 pos = vWorldPosition;
+	vec3 v = normalize( cameraPosition - pos );
+	vec3 n = transformNormalByInverseViewMatrix( normal, viewMatrix );
+	vec4 transmitted = getIBLVolumeRefraction(
+		n, v, material.roughness, material.diffuseContribution, material.specularColorBlended, material.specularF90,
+		pos, modelMatrix, viewMatrix, projectionMatrix, material.dispersion, material.ior, material.thickness,
+		material.attenuationColor, material.attenuationDistance );
+	material.transmissionAlpha = mix( material.transmissionAlpha, transmitted.a, material.transmission );
+	totalDiffuse = mix( totalDiffuse, transmitted.rgb, material.transmission );
+#endif`,xv=`#ifdef USE_TRANSMISSION
+	uniform float transmission;
+	uniform float thickness;
+	uniform float attenuationDistance;
+	uniform vec3 attenuationColor;
+	#ifdef USE_TRANSMISSIONMAP
+		uniform sampler2D transmissionMap;
+	#endif
+	#ifdef USE_THICKNESSMAP
+		uniform sampler2D thicknessMap;
+	#endif
+	uniform vec2 transmissionSamplerSize;
+	uniform sampler2D transmissionSamplerMap;
+	uniform mat4 modelMatrix;
+	uniform mat4 projectionMatrix;
+	varying vec3 vWorldPosition;
+	float w0( float a ) {
+		return ( 1.0 / 6.0 ) * ( a * ( a * ( - a + 3.0 ) - 3.0 ) + 1.0 );
+	}
+	float w1( float a ) {
+		return ( 1.0 / 6.0 ) * ( a *  a * ( 3.0 * a - 6.0 ) + 4.0 );
+	}
+	float w2( float a ){
+		return ( 1.0 / 6.0 ) * ( a * ( a * ( - 3.0 * a + 3.0 ) + 3.0 ) + 1.0 );
+	}
+	float w3( float a ) {
+		return ( 1.0 / 6.0 ) * ( a * a * a );
+	}
+	float g0( float a ) {
+		return w0( a ) + w1( a );
+	}
+	float g1( float a ) {
+		return w2( a ) + w3( a );
+	}
+	float h0( float a ) {
+		return - 1.0 + w1( a ) / ( w0( a ) + w1( a ) );
+	}
+	float h1( float a ) {
+		return 1.0 + w3( a ) / ( w2( a ) + w3( a ) );
+	}
+	vec4 bicubic( sampler2D tex, vec2 uv, vec4 texelSize, float lod ) {
+		uv = uv * texelSize.zw + 0.5;
+		vec2 iuv = floor( uv );
+		vec2 fuv = fract( uv );
+		float g0x = g0( fuv.x );
+		float g1x = g1( fuv.x );
+		float h0x = h0( fuv.x );
+		float h1x = h1( fuv.x );
+		float h0y = h0( fuv.y );
+		float h1y = h1( fuv.y );
+		vec2 p0 = ( vec2( iuv.x + h0x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;
+		vec2 p1 = ( vec2( iuv.x + h1x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;
+		vec2 p2 = ( vec2( iuv.x + h0x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;
+		vec2 p3 = ( vec2( iuv.x + h1x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;
+		return g0( fuv.y ) * ( g0x * textureLod( tex, p0, lod ) + g1x * textureLod( tex, p1, lod ) ) +
+			g1( fuv.y ) * ( g0x * textureLod( tex, p2, lod ) + g1x * textureLod( tex, p3, lod ) );
+	}
+	vec4 textureBicubic( sampler2D sampler, vec2 uv, float lod ) {
+		vec2 fLodSize = vec2( textureSize( sampler, int( lod ) ) );
+		vec2 cLodSize = vec2( textureSize( sampler, int( lod + 1.0 ) ) );
+		vec2 fLodSizeInv = 1.0 / fLodSize;
+		vec2 cLodSizeInv = 1.0 / cLodSize;
+		vec4 fSample = bicubic( sampler, uv, vec4( fLodSizeInv, fLodSize ), floor( lod ) );
+		vec4 cSample = bicubic( sampler, uv, vec4( cLodSizeInv, cLodSize ), ceil( lod ) );
+		return mix( fSample, cSample, fract( lod ) );
+	}
+	vec3 getVolumeTransmissionRay( const in vec3 n, const in vec3 v, const in float thickness, const in float ior, const in mat4 modelMatrix ) {
+		vec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );
+		vec3 modelScale;
+		modelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );
+		modelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );
+		modelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );
+		return normalize( refractionVector ) * thickness * modelScale;
+	}
+	float applyIorToRoughness( const in float roughness, const in float ior ) {
+		return roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );
+	}
+	vec4 getTransmissionSample( const in vec2 fragCoord, const in float roughness, const in float ior ) {
+		float lod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );
+		return textureBicubic( transmissionSamplerMap, fragCoord.xy, lod );
+	}
+	vec3 volumeAttenuation( const in float transmissionDistance, const in vec3 attenuationColor, const in float attenuationDistance ) {
+		if ( isinf( attenuationDistance ) ) {
+			return vec3( 1.0 );
+		} else {
+			vec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;
+			vec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );			return transmittance;
+		}
+	}
+	vec4 getIBLVolumeRefraction( const in vec3 n, const in vec3 v, const in float roughness, const in vec3 diffuseColor,
+		const in vec3 specularColor, const in float specularF90, const in vec3 position, const in mat4 modelMatrix,
+		const in mat4 viewMatrix, const in mat4 projMatrix, const in float dispersion, const in float ior, const in float thickness,
+		const in vec3 attenuationColor, const in float attenuationDistance ) {
+		vec4 transmittedLight;
+		vec3 transmittance;
+		#ifdef USE_DISPERSION
+			float halfSpread = ( ior - 1.0 ) * 0.025 * dispersion;
+			vec3 iors = vec3( ior - halfSpread, ior, ior + halfSpread );
+			for ( int i = 0; i < 3; i ++ ) {
+				vec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, iors[ i ], modelMatrix );
+				vec3 refractedRayExit = position + transmissionRay;
+				vec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );
+				vec2 refractionCoords = ndcPos.xy / ndcPos.w;
+				refractionCoords += 1.0;
+				refractionCoords /= 2.0;
+				vec4 transmissionSample = getTransmissionSample( refractionCoords, roughness, iors[ i ] );
+				transmittedLight[ i ] = transmissionSample[ i ];
+				transmittedLight.a += transmissionSample.a;
+				transmittance[ i ] = diffuseColor[ i ] * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance )[ i ];
+			}
+			transmittedLight.a /= 3.0;
+		#else
+			vec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );
+			vec3 refractedRayExit = position + transmissionRay;
+			vec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );
+			vec2 refractionCoords = ndcPos.xy / ndcPos.w;
+			refractionCoords += 1.0;
+			refractionCoords /= 2.0;
+			transmittedLight = getTransmissionSample( refractionCoords, roughness, ior );
+			transmittance = diffuseColor * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance );
+		#endif
+		vec3 attenuatedColor = transmittance * transmittedLight.rgb;
+		vec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );
+		float transmittanceFactor = ( transmittance.r + transmittance.g + transmittance.b ) / 3.0;
+		return vec4( ( 1.0 - F ) * attenuatedColor, 1.0 - ( 1.0 - transmittedLight.a ) * transmittanceFactor );
+	}
+#endif`,yv=`#if defined( USE_UV ) || defined( USE_ANISOTROPY )
+	varying vec2 vUv;
+#endif
+#ifdef USE_MAP
+	varying vec2 vMapUv;
+#endif
+#ifdef USE_ALPHAMAP
+	varying vec2 vAlphaMapUv;
+#endif
+#ifdef USE_LIGHTMAP
+	varying vec2 vLightMapUv;
+#endif
+#ifdef USE_AOMAP
+	varying vec2 vAoMapUv;
+#endif
+#ifdef USE_BUMPMAP
+	varying vec2 vBumpMapUv;
+#endif
+#ifdef USE_NORMALMAP
+	varying vec2 vNormalMapUv;
+#endif
+#ifdef USE_EMISSIVEMAP
+	varying vec2 vEmissiveMapUv;
+#endif
+#ifdef USE_METALNESSMAP
+	varying vec2 vMetalnessMapUv;
+#endif
+#ifdef USE_ROUGHNESSMAP
+	varying vec2 vRoughnessMapUv;
+#endif
+#ifdef USE_ANISOTROPYMAP
+	varying vec2 vAnisotropyMapUv;
+#endif
+#ifdef USE_CLEARCOATMAP
+	varying vec2 vClearcoatMapUv;
+#endif
+#ifdef USE_CLEARCOAT_NORMALMAP
+	varying vec2 vClearcoatNormalMapUv;
+#endif
+#ifdef USE_CLEARCOAT_ROUGHNESSMAP
+	varying vec2 vClearcoatRoughnessMapUv;
+#endif
+#ifdef USE_IRIDESCENCEMAP
+	varying vec2 vIridescenceMapUv;
+#endif
+#ifdef USE_IRIDESCENCE_THICKNESSMAP
+	varying vec2 vIridescenceThicknessMapUv;
+#endif
+#ifdef USE_SHEEN_COLORMAP
+	varying vec2 vSheenColorMapUv;
+#endif
+#ifdef USE_SHEEN_ROUGHNESSMAP
+	varying vec2 vSheenRoughnessMapUv;
+#endif
+#ifdef USE_SPECULARMAP
+	varying vec2 vSpecularMapUv;
+#endif
+#ifdef USE_SPECULAR_COLORMAP
+	varying vec2 vSpecularColorMapUv;
+#endif
+#ifdef USE_SPECULAR_INTENSITYMAP
+	varying vec2 vSpecularIntensityMapUv;
+#endif
+#ifdef USE_TRANSMISSIONMAP
+	uniform mat3 transmissionMapTransform;
+	varying vec2 vTransmissionMapUv;
+#endif
+#ifdef USE_THICKNESSMAP
+	uniform mat3 thicknessMapTransform;
+	varying vec2 vThicknessMapUv;
+#endif`,vv=`#if defined( USE_UV ) || defined( USE_ANISOTROPY )
+	varying vec2 vUv;
+#endif
+#ifdef USE_MAP
+	uniform mat3 mapTransform;
+	varying vec2 vMapUv;
+#endif
+#ifdef USE_ALPHAMAP
+	uniform mat3 alphaMapTransform;
+	varying vec2 vAlphaMapUv;
+#endif
+#ifdef USE_LIGHTMAP
+	uniform mat3 lightMapTransform;
+	varying vec2 vLightMapUv;
+#endif
+#ifdef USE_AOMAP
+	uniform mat3 aoMapTransform;
+	varying vec2 vAoMapUv;
+#endif
+#ifdef USE_BUMPMAP
+	uniform mat3 bumpMapTransform;
+	varying vec2 vBumpMapUv;
+#endif
+#ifdef USE_NORMALMAP
+	uniform mat3 normalMapTransform;
+	varying vec2 vNormalMapUv;
+#endif
+#ifdef USE_DISPLACEMENTMAP
+	uniform mat3 displacementMapTransform;
+	varying vec2 vDisplacementMapUv;
+#endif
+#ifdef USE_EMISSIVEMAP
+	uniform mat3 emissiveMapTransform;
+	varying vec2 vEmissiveMapUv;
+#endif
+#ifdef USE_METALNESSMAP
+	uniform mat3 metalnessMapTransform;
+	varying vec2 vMetalnessMapUv;
+#endif
+#ifdef USE_ROUGHNESSMAP
+	uniform mat3 roughnessMapTransform;
+	varying vec2 vRoughnessMapUv;
+#endif
+#ifdef USE_ANISOTROPYMAP
+	uniform mat3 anisotropyMapTransform;
+	varying vec2 vAnisotropyMapUv;
+#endif
+#ifdef USE_CLEARCOATMAP
+	uniform mat3 clearcoatMapTransform;
+	varying vec2 vClearcoatMapUv;
+#endif
+#ifdef USE_CLEARCOAT_NORMALMAP
+	uniform mat3 clearcoatNormalMapTransform;
+	varying vec2 vClearcoatNormalMapUv;
+#endif
+#ifdef USE_CLEARCOAT_ROUGHNESSMAP
+	uniform mat3 clearcoatRoughnessMapTransform;
+	varying vec2 vClearcoatRoughnessMapUv;
+#endif
+#ifdef USE_SHEEN_COLORMAP
+	uniform mat3 sheenColorMapTransform;
+	varying vec2 vSheenColorMapUv;
+#endif
+#ifdef USE_SHEEN_ROUGHNESSMAP
+	uniform mat3 sheenRoughnessMapTransform;
+	varying vec2 vSheenRoughnessMapUv;
+#endif
+#ifdef USE_IRIDESCENCEMAP
+	uniform mat3 iridescenceMapTransform;
+	varying vec2 vIridescenceMapUv;
+#endif
+#ifdef USE_IRIDESCENCE_THICKNESSMAP
+	uniform mat3 iridescenceThicknessMapTransform;
+	varying vec2 vIridescenceThicknessMapUv;
+#endif
+#ifdef USE_SPECULARMAP
+	uniform mat3 specularMapTransform;
+	varying vec2 vSpecularMapUv;
+#endif
+#ifdef USE_SPECULAR_COLORMAP
+	uniform mat3 specularColorMapTransform;
+	varying vec2 vSpecularColorMapUv;
+#endif
+#ifdef USE_SPECULAR_INTENSITYMAP
+	uniform mat3 specularIntensityMapTransform;
+	varying vec2 vSpecularIntensityMapUv;
+#endif
+#ifdef USE_TRANSMISSIONMAP
+	uniform mat3 transmissionMapTransform;
+	varying vec2 vTransmissionMapUv;
+#endif
+#ifdef USE_THICKNESSMAP
+	uniform mat3 thicknessMapTransform;
+	varying vec2 vThicknessMapUv;
+#endif`,Mv=`#if defined( USE_UV ) || defined( USE_ANISOTROPY )
+	vUv = vec3( uv, 1 ).xy;
+#endif
+#ifdef USE_MAP
+	vMapUv = ( mapTransform * vec3( MAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_ALPHAMAP
+	vAlphaMapUv = ( alphaMapTransform * vec3( ALPHAMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_LIGHTMAP
+	vLightMapUv = ( lightMapTransform * vec3( LIGHTMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_AOMAP
+	vAoMapUv = ( aoMapTransform * vec3( AOMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_BUMPMAP
+	vBumpMapUv = ( bumpMapTransform * vec3( BUMPMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_NORMALMAP
+	vNormalMapUv = ( normalMapTransform * vec3( NORMALMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_DISPLACEMENTMAP
+	vDisplacementMapUv = ( displacementMapTransform * vec3( DISPLACEMENTMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_EMISSIVEMAP
+	vEmissiveMapUv = ( emissiveMapTransform * vec3( EMISSIVEMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_METALNESSMAP
+	vMetalnessMapUv = ( metalnessMapTransform * vec3( METALNESSMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_ROUGHNESSMAP
+	vRoughnessMapUv = ( roughnessMapTransform * vec3( ROUGHNESSMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_ANISOTROPYMAP
+	vAnisotropyMapUv = ( anisotropyMapTransform * vec3( ANISOTROPYMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_CLEARCOATMAP
+	vClearcoatMapUv = ( clearcoatMapTransform * vec3( CLEARCOATMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_CLEARCOAT_NORMALMAP
+	vClearcoatNormalMapUv = ( clearcoatNormalMapTransform * vec3( CLEARCOAT_NORMALMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_CLEARCOAT_ROUGHNESSMAP
+	vClearcoatRoughnessMapUv = ( clearcoatRoughnessMapTransform * vec3( CLEARCOAT_ROUGHNESSMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_IRIDESCENCEMAP
+	vIridescenceMapUv = ( iridescenceMapTransform * vec3( IRIDESCENCEMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_IRIDESCENCE_THICKNESSMAP
+	vIridescenceThicknessMapUv = ( iridescenceThicknessMapTransform * vec3( IRIDESCENCE_THICKNESSMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_SHEEN_COLORMAP
+	vSheenColorMapUv = ( sheenColorMapTransform * vec3( SHEEN_COLORMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_SHEEN_ROUGHNESSMAP
+	vSheenRoughnessMapUv = ( sheenRoughnessMapTransform * vec3( SHEEN_ROUGHNESSMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_SPECULARMAP
+	vSpecularMapUv = ( specularMapTransform * vec3( SPECULARMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_SPECULAR_COLORMAP
+	vSpecularColorMapUv = ( specularColorMapTransform * vec3( SPECULAR_COLORMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_SPECULAR_INTENSITYMAP
+	vSpecularIntensityMapUv = ( specularIntensityMapTransform * vec3( SPECULAR_INTENSITYMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_TRANSMISSIONMAP
+	vTransmissionMapUv = ( transmissionMapTransform * vec3( TRANSMISSIONMAP_UV, 1 ) ).xy;
+#endif
+#ifdef USE_THICKNESSMAP
+	vThicknessMapUv = ( thicknessMapTransform * vec3( THICKNESSMAP_UV, 1 ) ).xy;
+#endif`,Sv=`#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION ) || NUM_SPOT_LIGHT_COORDS > 0
+	vec4 worldPosition = vec4( transformed, 1.0 );
+	#ifdef USE_BATCHING
+		worldPosition = batchingMatrix * worldPosition;
+	#endif
+	#ifdef USE_INSTANCING
+		worldPosition = instanceMatrix * worldPosition;
+	#endif
+	worldPosition = modelMatrix * worldPosition;
+#endif`,bv=`varying vec2 vUv;
+uniform mat3 uvTransform;
+void main() {
+	vUv = ( uvTransform * vec3( uv, 1 ) ).xy;
+	gl_Position = vec4( position.xy, 1.0, 1.0 );
+}`,Tv=`uniform sampler2D t2D;
+uniform float backgroundIntensity;
+varying vec2 vUv;
+void main() {
+	vec4 texColor = texture2D( t2D, vUv );
+	#ifdef DECODE_VIDEO_TEXTURE
+		texColor = vec4( mix( pow( texColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), texColor.rgb * 0.0773993808, vec3( lessThanEqual( texColor.rgb, vec3( 0.04045 ) ) ) ), texColor.w );
+	#endif
+	texColor.rgb *= backgroundIntensity;
+	gl_FragColor = texColor;
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+}`,Av=`varying vec3 vWorldDirection;
+#include <common>
+void main() {
+	vWorldDirection = transformDirection( position, modelMatrix );
+	#include <begin_vertex>
+	#include <project_vertex>
+	gl_Position.z = gl_Position.w;
+}`,Ev=`#ifdef ENVMAP_TYPE_CUBE
+	uniform samplerCube envMap;
+#elif defined( ENVMAP_TYPE_CUBE_UV )
+	uniform sampler2D envMap;
+#endif
+uniform float backgroundBlurriness;
+uniform float backgroundIntensity;
+uniform mat3 backgroundRotation;
+varying vec3 vWorldDirection;
+#include <cube_uv_reflection_fragment>
+void main() {
+	#ifdef ENVMAP_TYPE_CUBE
+		vec4 texColor = textureCube( envMap, backgroundRotation * vWorldDirection );
+	#elif defined( ENVMAP_TYPE_CUBE_UV )
+		vec4 texColor = textureCubeUV( envMap, backgroundRotation * vWorldDirection, backgroundBlurriness );
+	#else
+		vec4 texColor = vec4( 0.0, 0.0, 0.0, 1.0 );
+	#endif
+	texColor.rgb *= backgroundIntensity;
+	gl_FragColor = texColor;
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+}`,wv=`varying vec3 vWorldDirection;
+#include <common>
+void main() {
+	vWorldDirection = transformDirection( position, modelMatrix );
+	#include <begin_vertex>
+	#include <project_vertex>
+	gl_Position.z = gl_Position.w;
+}`,Rv=`uniform samplerCube tCube;
+uniform float tFlip;
+uniform float opacity;
+varying vec3 vWorldDirection;
+void main() {
+	vec4 texColor = textureCube( tCube, vec3( tFlip * vWorldDirection.x, vWorldDirection.yz ) );
+	gl_FragColor = texColor;
+	gl_FragColor.a *= opacity;
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+}`,Cv=`#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+varying vec2 vHighPrecisionZW;
+void main() {
+	#include <uv_vertex>
+	#include <batching_vertex>
+	#include <skinbase_vertex>
+	#include <morphinstance_vertex>
+	#ifdef USE_DISPLACEMENTMAP
+		#include <beginnormal_vertex>
+		#include <morphnormal_vertex>
+		#include <skinnormal_vertex>
+	#endif
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	vHighPrecisionZW = gl_Position.zw;
+}`,Iv=`#if DEPTH_PACKING == 3200
+	uniform float opacity;
+#endif
+#include <common>
+#include <packing>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+varying vec2 vHighPrecisionZW;
+void main() {
+	vec4 diffuseColor = vec4( 1.0 );
+	#include <clipping_planes_fragment>
+	#if DEPTH_PACKING == 3200
+		diffuseColor.a = opacity;
+	#endif
+	#include <map_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <logdepthbuf_fragment>
+	#ifdef USE_REVERSED_DEPTH_BUFFER
+		float fragCoordZ = vHighPrecisionZW[ 0 ] / vHighPrecisionZW[ 1 ];
+	#else
+		float fragCoordZ = 0.5 * vHighPrecisionZW[ 0 ] / vHighPrecisionZW[ 1 ] + 0.5;
+	#endif
+	#if DEPTH_PACKING == 3200
+		gl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );
+	#elif DEPTH_PACKING == 3201
+		gl_FragColor = packDepthToRGBA( fragCoordZ );
+	#elif DEPTH_PACKING == 3202
+		gl_FragColor = vec4( packDepthToRGB( fragCoordZ ), 1.0 );
+	#elif DEPTH_PACKING == 3203
+		gl_FragColor = vec4( packDepthToRG( fragCoordZ ), 0.0, 1.0 );
+	#endif
+}`,Pv=`#define DISTANCE
+varying vec3 vWorldPosition;
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <batching_vertex>
+	#include <skinbase_vertex>
+	#include <morphinstance_vertex>
+	#ifdef USE_DISPLACEMENTMAP
+		#include <beginnormal_vertex>
+		#include <morphnormal_vertex>
+		#include <skinnormal_vertex>
+	#endif
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <worldpos_vertex>
+	#include <clipping_planes_vertex>
+	vWorldPosition = worldPosition.xyz;
+}`,Lv=`#define DISTANCE
+uniform vec3 referencePosition;
+uniform float nearDistance;
+uniform float farDistance;
+varying vec3 vWorldPosition;
+#include <common>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( 1.0 );
+	#include <clipping_planes_fragment>
+	#include <map_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	float dist = length( vWorldPosition - referencePosition );
+	dist = ( dist - nearDistance ) / ( farDistance - nearDistance );
+	dist = saturate( dist );
+	gl_FragColor = vec4( dist, 0.0, 0.0, 1.0 );
+}`,Nv=`varying vec3 vWorldDirection;
+#include <common>
+void main() {
+	vWorldDirection = transformDirection( position, modelMatrix );
+	#include <begin_vertex>
+	#include <project_vertex>
+}`,Dv=`uniform sampler2D tEquirect;
+varying vec3 vWorldDirection;
+#include <common>
+void main() {
+	vec3 direction = normalize( vWorldDirection );
+	vec2 sampleUV = equirectUv( direction );
+	gl_FragColor = texture2D( tEquirect, sampleUV );
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+}`,Uv=`uniform float scale;
+attribute float lineDistance;
+varying float vLineDistance;
+#include <common>
+#include <uv_pars_vertex>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	vLineDistance = scale * lineDistance;
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	#include <fog_vertex>
+}`,Fv=`uniform vec3 diffuse;
+uniform float opacity;
+uniform float dashSize;
+uniform float totalSize;
+varying float vLineDistance;
+#include <common>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <fog_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	if ( mod( vLineDistance, totalSize ) > dashSize ) {
+		discard;
+	}
+	vec3 outgoingLight = vec3( 0.0 );
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	outgoingLight = diffuseColor.rgb;
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+}`,Ov=`#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <envmap_pars_vertex>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <batching_vertex>
+	#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )
+		#include <beginnormal_vertex>
+		#include <morphnormal_vertex>
+		#include <skinbase_vertex>
+		#include <skinnormal_vertex>
+		#include <defaultnormal_vertex>
+	#endif
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	#include <worldpos_vertex>
+	#include <envmap_vertex>
+	#include <fog_vertex>
+}`,Bv=`uniform vec3 diffuse;
+uniform float opacity;
+#ifndef FLAT_SHADED
+	varying vec3 vNormal;
+#endif
+#include <common>
+#include <dithering_pars_fragment>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <aomap_pars_fragment>
+#include <lightmap_pars_fragment>
+#include <envmap_common_pars_fragment>
+#include <envmap_pars_fragment>
+#include <fog_pars_fragment>
+#include <specularmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <specularmap_fragment>
+	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
+	#ifdef USE_LIGHTMAP
+		vec4 lightMapTexel = texture2D( lightMap, vLightMapUv );
+		reflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity * RECIPROCAL_PI;
+	#else
+		reflectedLight.indirectDiffuse += vec3( 1.0 );
+	#endif
+	#include <aomap_fragment>
+	reflectedLight.indirectDiffuse *= diffuseColor.rgb;
+	vec3 outgoingLight = reflectedLight.indirectDiffuse;
+	#include <envmap_fragment>
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+	#include <dithering_fragment>
+}`,zv=`#define LAMBERT
+varying vec3 vViewPosition;
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <envmap_pars_vertex>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <normal_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <shadowmap_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <normal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	vViewPosition = - mvPosition.xyz;
+	#include <worldpos_vertex>
+	#include <envmap_vertex>
+	#include <shadowmap_vertex>
+	#include <fog_vertex>
+}`,kv=`#define LAMBERT
+uniform vec3 diffuse;
+uniform vec3 emissive;
+uniform float opacity;
+#include <common>
+#include <dithering_pars_fragment>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <aomap_pars_fragment>
+#include <lightmap_pars_fragment>
+#include <emissivemap_pars_fragment>
+#include <cube_uv_reflection_fragment>
+#include <envmap_common_pars_fragment>
+#include <envmap_pars_fragment>
+#include <envmap_physical_pars_fragment>
+#include <fog_pars_fragment>
+#include <bsdfs>
+#include <lights_pars_begin>
+#include <normal_pars_fragment>
+#include <lights_lambert_pars_fragment>
+#include <shadowmap_pars_fragment>
+#include <bumpmap_pars_fragment>
+#include <normalmap_pars_fragment>
+#include <specularmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
+	vec3 totalEmissiveRadiance = emissive;
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <specularmap_fragment>
+	#include <normal_fragment_begin>
+	#include <normal_fragment_maps>
+	#include <emissivemap_fragment>
+	#include <lights_lambert_fragment>
+	#include <lights_fragment_begin>
+	#include <lights_fragment_maps>
+	#include <lights_fragment_end>
+	#include <aomap_fragment>
+	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;
+	#include <envmap_fragment>
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+	#include <dithering_fragment>
+}`,Vv=`#define MATCAP
+varying vec3 vViewPosition;
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <color_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <fog_pars_vertex>
+#include <normal_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <normal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	#include <fog_vertex>
+	vViewPosition = - mvPosition.xyz;
+}`,Gv=`#define MATCAP
+uniform vec3 diffuse;
+uniform float opacity;
+uniform sampler2D matcap;
+varying vec3 vViewPosition;
+#include <common>
+#include <dithering_pars_fragment>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <fog_pars_fragment>
+#include <normal_pars_fragment>
+#include <bumpmap_pars_fragment>
+#include <normalmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <normal_fragment_begin>
+	#include <normal_fragment_maps>
+	vec3 viewDir = normalize( vViewPosition );
+	vec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );
+	vec3 y = cross( viewDir, x );
+	vec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;
+	#ifdef USE_MATCAP
+		vec4 matcapColor = texture2D( matcap, uv );
+	#else
+		vec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );
+	#endif
+	vec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+	#include <dithering_fragment>
+}`,Hv=`#define NORMAL
+#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )
+	varying vec3 vViewPosition;
+#endif
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <normal_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphinstance_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <normal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )
+	vViewPosition = - mvPosition.xyz;
+#endif
+}`,Wv=`#define NORMAL
+uniform float opacity;
+#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )
+	varying vec3 vViewPosition;
+#endif
+#include <uv_pars_fragment>
+#include <normal_pars_fragment>
+#include <bumpmap_pars_fragment>
+#include <normalmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( 0.0, 0.0, 0.0, opacity );
+	#include <clipping_planes_fragment>
+	#include <logdepthbuf_fragment>
+	#include <normal_fragment_begin>
+	#include <normal_fragment_maps>
+	gl_FragColor = vec4( normalize( normal ) * 0.5 + 0.5, diffuseColor.a );
+	#ifdef OPAQUE
+		gl_FragColor.a = 1.0;
+	#endif
+}`,Xv=`#define PHONG
+varying vec3 vViewPosition;
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <envmap_pars_vertex>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <normal_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <shadowmap_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphcolor_vertex>
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphinstance_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <normal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	vViewPosition = - mvPosition.xyz;
+	#include <worldpos_vertex>
+	#include <envmap_vertex>
+	#include <shadowmap_vertex>
+	#include <fog_vertex>
+}`,qv=`#define PHONG
+uniform vec3 diffuse;
+uniform vec3 emissive;
+uniform vec3 specular;
+uniform float shininess;
+uniform float opacity;
+#include <common>
+#include <dithering_pars_fragment>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <aomap_pars_fragment>
+#include <lightmap_pars_fragment>
+#include <emissivemap_pars_fragment>
+#include <cube_uv_reflection_fragment>
+#include <envmap_common_pars_fragment>
+#include <envmap_pars_fragment>
+#include <envmap_physical_pars_fragment>
+#include <fog_pars_fragment>
+#include <bsdfs>
+#include <lights_pars_begin>
+#include <normal_pars_fragment>
+#include <lights_phong_pars_fragment>
+#include <shadowmap_pars_fragment>
+#include <bumpmap_pars_fragment>
+#include <normalmap_pars_fragment>
+#include <specularmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
+	vec3 totalEmissiveRadiance = emissive;
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <specularmap_fragment>
+	#include <normal_fragment_begin>
+	#include <normal_fragment_maps>
+	#include <emissivemap_fragment>
+	#include <lights_phong_fragment>
+	#include <lights_fragment_begin>
+	#include <lights_fragment_maps>
+	#include <lights_fragment_end>
+	#include <aomap_fragment>
+	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;
+	#include <envmap_fragment>
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+	#include <dithering_fragment>
+}`,Yv=`#define STANDARD
+varying vec3 vViewPosition;
+#ifdef USE_TRANSMISSION
+	varying vec3 vWorldPosition;
+#endif
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <normal_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <shadowmap_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <normal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	vViewPosition = - mvPosition.xyz;
+	#include <worldpos_vertex>
+	#include <shadowmap_vertex>
+	#include <fog_vertex>
+#ifdef USE_TRANSMISSION
+	vWorldPosition = worldPosition.xyz;
+#endif
+}`,Zv=`#define STANDARD
+#ifdef PHYSICAL
+	#define IOR
+	#define USE_SPECULAR
+#endif
+uniform vec3 diffuse;
+uniform vec3 emissive;
+uniform float roughness;
+uniform float metalness;
+uniform float opacity;
+#ifdef IOR
+	uniform float ior;
+#endif
+#ifdef USE_SPECULAR
+	uniform float specularIntensity;
+	uniform vec3 specularColor;
+	#ifdef USE_SPECULAR_COLORMAP
+		uniform sampler2D specularColorMap;
+	#endif
+	#ifdef USE_SPECULAR_INTENSITYMAP
+		uniform sampler2D specularIntensityMap;
+	#endif
+#endif
+#ifdef USE_CLEARCOAT
+	uniform float clearcoat;
+	uniform float clearcoatRoughness;
+#endif
+#ifdef USE_DISPERSION
+	uniform float dispersion;
+#endif
+#ifdef USE_RETROREFLECTION
+	uniform float retroreflectivity;
+#endif
+#ifdef USE_IRIDESCENCE
+	uniform float iridescence;
+	uniform float iridescenceIOR;
+	uniform float iridescenceThicknessMinimum;
+	uniform float iridescenceThicknessMaximum;
+#endif
+#ifdef USE_SHEEN
+	uniform vec3 sheenColor;
+	uniform float sheenRoughness;
+	#ifdef USE_SHEEN_COLORMAP
+		uniform sampler2D sheenColorMap;
+	#endif
+	#ifdef USE_SHEEN_ROUGHNESSMAP
+		uniform sampler2D sheenRoughnessMap;
+	#endif
+#endif
+#ifdef USE_ANISOTROPY
+	uniform vec2 anisotropyVector;
+	#ifdef USE_ANISOTROPYMAP
+		uniform sampler2D anisotropyMap;
+	#endif
+#endif
+varying vec3 vViewPosition;
+#include <common>
+#include <dithering_pars_fragment>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <aomap_pars_fragment>
+#include <lightmap_pars_fragment>
+#include <emissivemap_pars_fragment>
+#include <iridescence_fragment>
+#include <cube_uv_reflection_fragment>
+#include <envmap_common_pars_fragment>
+#include <envmap_physical_pars_fragment>
+#include <fog_pars_fragment>
+#include <lights_pars_begin>
+#include <normal_pars_fragment>
+#include <lights_physical_pars_fragment>
+#include <transmission_pars_fragment>
+#include <shadowmap_pars_fragment>
+#include <bumpmap_pars_fragment>
+#include <normalmap_pars_fragment>
+#include <clearcoat_pars_fragment>
+#include <iridescence_pars_fragment>
+#include <roughnessmap_pars_fragment>
+#include <metalnessmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
+	vec3 totalEmissiveRadiance = emissive;
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <roughnessmap_fragment>
+	#include <metalnessmap_fragment>
+	#include <normal_fragment_begin>
+	#include <normal_fragment_maps>
+	#include <clearcoat_normal_fragment_begin>
+	#include <clearcoat_normal_fragment_maps>
+	#include <emissivemap_fragment>
+	#include <lights_physical_fragment>
+	#include <lights_fragment_begin>
+	#include <lights_fragment_maps>
+	#include <lights_fragment_end>
+	#include <aomap_fragment>
+	vec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;
+	vec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;
+	#include <transmission_fragment>
+	vec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;
+	#ifdef USE_SHEEN
+ 
+		outgoingLight = outgoingLight + sheenSpecularDirect + sheenSpecularIndirect;
+ 
+ 	#endif
+	#ifdef USE_CLEARCOAT
+		float dotNVcc = saturate( dot( geometryClearcoatNormal, geometryViewDir ) );
+		vec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );
+		outgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + ( clearcoatSpecularDirect + clearcoatSpecularIndirect ) * material.clearcoat;
+	#endif
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+	#include <dithering_fragment>
+}`,Kv=`#define TOON
+varying vec3 vViewPosition;
+#include <common>
+#include <batching_pars_vertex>
+#include <uv_pars_vertex>
+#include <displacementmap_pars_vertex>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <normal_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <shadowmap_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <normal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <displacementmap_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	vViewPosition = - mvPosition.xyz;
+	#include <worldpos_vertex>
+	#include <shadowmap_vertex>
+	#include <fog_vertex>
+}`,Jv=`#define TOON
+uniform vec3 diffuse;
+uniform vec3 emissive;
+uniform float opacity;
+#include <common>
+#include <dithering_pars_fragment>
+#include <color_pars_fragment>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <aomap_pars_fragment>
+#include <lightmap_pars_fragment>
+#include <emissivemap_pars_fragment>
+#include <gradientmap_pars_fragment>
+#include <fog_pars_fragment>
+#include <bsdfs>
+#include <lights_pars_begin>
+#include <normal_pars_fragment>
+#include <lights_toon_pars_fragment>
+#include <shadowmap_pars_fragment>
+#include <bumpmap_pars_fragment>
+#include <normalmap_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
+	vec3 totalEmissiveRadiance = emissive;
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <color_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	#include <normal_fragment_begin>
+	#include <normal_fragment_maps>
+	#include <emissivemap_fragment>
+	#include <lights_toon_fragment>
+	#include <lights_fragment_begin>
+	#include <lights_fragment_maps>
+	#include <lights_fragment_end>
+	#include <aomap_fragment>
+	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+	#include <dithering_fragment>
+}`,jv=`uniform float size;
+uniform float scale;
+#include <common>
+#include <color_pars_vertex>
+#include <fog_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+#ifdef USE_POINTS_UV
+	varying vec2 vUv;
+	uniform mat3 uvTransform;
+#endif
+void main() {
+	#ifdef USE_POINTS_UV
+		vUv = ( uvTransform * vec3( uv, 1 ) ).xy;
+	#endif
+	#include <color_vertex>
+	#include <morphinstance_vertex>
+	#include <morphcolor_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <project_vertex>
+	gl_PointSize = size;
+	#ifdef USE_SIZEATTENUATION
+		bool isPerspective = isPerspectiveMatrix( projectionMatrix );
+		if ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );
+	#endif
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	#include <worldpos_vertex>
+	#include <fog_vertex>
+}`,$v=`uniform vec3 diffuse;
+uniform float opacity;
+#include <common>
+#include <color_pars_fragment>
+#include <map_particle_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <fog_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	vec3 outgoingLight = vec3( 0.0 );
+	#include <logdepthbuf_fragment>
+	#include <map_particle_fragment>
+	#include <color_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	outgoingLight = diffuseColor.rgb;
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+}`,Qv=`#include <common>
+#include <batching_pars_vertex>
+#include <fog_pars_vertex>
+#include <morphtarget_pars_vertex>
+#include <skinning_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <shadowmap_pars_vertex>
+void main() {
+	#include <batching_vertex>
+	#include <beginnormal_vertex>
+	#include <morphinstance_vertex>
+	#include <morphnormal_vertex>
+	#include <skinbase_vertex>
+	#include <skinnormal_vertex>
+	#include <defaultnormal_vertex>
+	#include <begin_vertex>
+	#include <morphtarget_vertex>
+	#include <skinning_vertex>
+	#include <project_vertex>
+	#include <logdepthbuf_vertex>
+	#include <worldpos_vertex>
+	#include <shadowmap_vertex>
+	#include <fog_vertex>
+}`,eM=`uniform vec3 color;
+uniform float opacity;
+#include <common>
+#include <fog_pars_fragment>
+#include <bsdfs>
+#include <lights_pars_begin>
+#include <logdepthbuf_pars_fragment>
+#include <shadowmap_pars_fragment>
+#include <shadowmask_pars_fragment>
+void main() {
+	#include <logdepthbuf_fragment>
+	gl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+	#include <premultiplied_alpha_fragment>
+}`,tM=`uniform float rotation;
+uniform vec2 center;
+#include <common>
+#include <uv_pars_vertex>
+#include <fog_pars_vertex>
+#include <logdepthbuf_pars_vertex>
+#include <clipping_planes_pars_vertex>
+void main() {
+	#include <uv_vertex>
+	vec4 mvPosition = modelViewMatrix[ 3 ];
+	vec2 scale = vec2( length( modelMatrix[ 0 ].xyz ), length( modelMatrix[ 1 ].xyz ) );
+	#ifndef USE_SIZEATTENUATION
+		bool isPerspective = isPerspectiveMatrix( projectionMatrix );
+		if ( isPerspective ) scale *= - mvPosition.z;
+	#endif
+	vec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;
+	vec2 rotatedPosition;
+	rotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;
+	rotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;
+	mvPosition.xy += rotatedPosition;
+	gl_Position = projectionMatrix * mvPosition;
+	#include <logdepthbuf_vertex>
+	#include <clipping_planes_vertex>
+	#include <fog_vertex>
+}`,nM=`uniform vec3 diffuse;
+uniform float opacity;
+#include <common>
+#include <uv_pars_fragment>
+#include <map_pars_fragment>
+#include <alphamap_pars_fragment>
+#include <alphatest_pars_fragment>
+#include <alphahash_pars_fragment>
+#include <fog_pars_fragment>
+#include <logdepthbuf_pars_fragment>
+#include <clipping_planes_pars_fragment>
+void main() {
+	vec4 diffuseColor = vec4( diffuse, opacity );
+	#include <clipping_planes_fragment>
+	vec3 outgoingLight = vec3( 0.0 );
+	#include <logdepthbuf_fragment>
+	#include <map_fragment>
+	#include <alphamap_fragment>
+	#include <alphatest_fragment>
+	#include <alphahash_fragment>
+	outgoingLight = diffuseColor.rgb;
+	#include <opaque_fragment>
+	#include <tonemapping_fragment>
+	#include <colorspace_fragment>
+	#include <fog_fragment>
+}`,je={alphahash_fragment:bx,alphahash_pars_fragment:Tx,alphamap_fragment:Ax,alphamap_pars_fragment:Ex,alphatest_fragment:wx,alphatest_pars_fragment:Rx,aomap_fragment:Cx,aomap_pars_fragment:Ix,batching_pars_vertex:Px,batching_vertex:Lx,begin_vertex:Nx,beginnormal_vertex:Dx,bsdfs:Ux,iridescence_fragment:Fx,bumpmap_pars_fragment:Ox,clipping_planes_fragment:Bx,clipping_planes_pars_fragment:zx,clipping_planes_pars_vertex:kx,clipping_planes_vertex:Vx,color_fragment:Gx,color_pars_fragment:Hx,color_pars_vertex:Wx,color_vertex:Xx,common:qx,cube_uv_reflection_fragment:Yx,defaultnormal_vertex:Zx,displacementmap_pars_vertex:Kx,displacementmap_vertex:Jx,emissivemap_fragment:jx,emissivemap_pars_fragment:$x,colorspace_fragment:Qx,colorspace_pars_fragment:ey,envmap_fragment:ty,envmap_common_pars_fragment:ny,envmap_pars_fragment:iy,envmap_pars_vertex:sy,envmap_physical_pars_fragment:my,envmap_vertex:ry,fog_vertex:oy,fog_pars_vertex:ay,fog_fragment:ly,fog_pars_fragment:cy,gradientmap_pars_fragment:hy,lightmap_pars_fragment:uy,lights_lambert_fragment:dy,lights_lambert_pars_fragment:fy,lights_pars_begin:py,lights_toon_fragment:gy,lights_toon_pars_fragment:_y,lights_phong_fragment:xy,lights_phong_pars_fragment:yy,lights_physical_fragment:vy,lights_physical_pars_fragment:My,lights_fragment_begin:Sy,lights_fragment_maps:by,lights_fragment_end:Ty,lightprobes_pars_fragment:Ay,logdepthbuf_fragment:Ey,logdepthbuf_pars_fragment:wy,logdepthbuf_pars_vertex:Ry,logdepthbuf_vertex:Cy,map_fragment:Iy,map_pars_fragment:Py,map_particle_fragment:Ly,map_particle_pars_fragment:Ny,metalnessmap_fragment:Dy,metalnessmap_pars_fragment:Uy,morphinstance_vertex:Fy,morphcolor_vertex:Oy,morphnormal_vertex:By,morphtarget_pars_vertex:zy,morphtarget_vertex:ky,normal_fragment_begin:Vy,normal_fragment_maps:Gy,normal_pars_fragment:Hy,normal_pars_vertex:Wy,normal_vertex:Xy,normalmap_pars_fragment:qy,clearcoat_normal_fragment_begin:Yy,clearcoat_normal_fragment_maps:Zy,clearcoat_pars_fragment:Ky,iridescence_pars_fragment:Jy,opaque_fragment:jy,packing:$y,premultiplied_alpha_fragment:Qy,project_vertex:ev,dithering_fragment:tv,dithering_pars_fragment:nv,roughnessmap_fragment:iv,roughnessmap_pars_fragment:sv,shadowmap_pars_fragment:rv,shadowmap_pars_vertex:ov,shadowmap_vertex:av,shadowmask_pars_fragment:lv,skinbase_vertex:cv,skinning_pars_vertex:hv,skinning_vertex:uv,skinnormal_vertex:dv,specularmap_fragment:fv,specularmap_pars_fragment:pv,tonemapping_fragment:mv,tonemapping_pars_fragment:gv,transmission_fragment:_v,transmission_pars_fragment:xv,uv_pars_fragment:yv,uv_pars_vertex:vv,uv_vertex:Mv,worldpos_vertex:Sv,background_vert:bv,background_frag:Tv,backgroundCube_vert:Av,backgroundCube_frag:Ev,cube_vert:wv,cube_frag:Rv,depth_vert:Cv,depth_frag:Iv,distance_vert:Pv,distance_frag:Lv,equirect_vert:Nv,equirect_frag:Dv,linedashed_vert:Uv,linedashed_frag:Fv,meshbasic_vert:Ov,meshbasic_frag:Bv,meshlambert_vert:zv,meshlambert_frag:kv,meshmatcap_vert:Vv,meshmatcap_frag:Gv,meshnormal_vert:Hv,meshnormal_frag:Wv,meshphong_vert:Xv,meshphong_frag:qv,meshphysical_vert:Yv,meshphysical_frag:Zv,meshtoon_vert:Kv,meshtoon_frag:Jv,points_vert:jv,points_frag:$v,shadow_vert:Qv,shadow_frag:eM,sprite_vert:tM,sprite_frag:nM},xe={common:{diffuse:{value:new 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ee=Q.data,ve=ee.stride,Ge=Q.offset;if(ee.isInstancedInterleavedBuffer){for(let Te=0;Te<q.locationSize;Te++)m(q.location+Te,ee.meshPerAttribute);P.isInstancedMesh!==!0&&N._maxInstanceCount===void 0&&(N._maxInstanceCount=ee.meshPerAttribute*ee.count)}else for(let Te=0;Te<q.locationSize;Te++)g(q.location+Te);r.bindBuffer(r.ARRAY_BUFFER,ct);for(let Te=0;Te<q.locationSize;Te++)b(q.location+Te,Ne/q.locationSize,tt,ne,ve*ot,(Ge+Ne/q.locationSize*Te)*ot,K)}else{if(Q.isInstancedBufferAttribute){for(let ee=0;ee<q.locationSize;ee++)m(q.location+ee,Q.meshPerAttribute);P.isInstancedMesh!==!0&&N._maxInstanceCount===void 0&&(N._maxInstanceCount=Q.meshPerAttribute*Q.count)}else for(let ee=0;ee<q.locationSize;ee++)g(q.location+ee);r.bindBuffer(r.ARRAY_BUFFER,ct);for(let ee=0;ee<q.locationSize;ee++)b(q.location+ee,Ne/q.locationSize,tt,ne,Ne*ot,Ne/q.locationSize*ee*ot,K)}}else if(X!==void 0){let ne=X[ie];if(ne!==void 0)switch(ne.length){case 2:r.vertexAttrib2fv(q.location,ne);break;case 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I(){i.geometry=null,i.program=null,i.wireframe=!1}return{setup:a,reset:E,resetDefaultState:I,dispose:T,releaseStatesOfGeometry:S,releaseStatesOfObject:v,releaseStatesOfProgram:w,initAttributes:_,enableAttribute:g,disableUnusedAttributes:y}}function oM(r,e,t){let n;function i(l){n=l}function s(l,c){r.drawArrays(n,l,c),t.update(c,n,1)}function o(l,c,h){h!==0&&(r.drawArraysInstanced(n,l,c,h),t.update(c,n,h))}function a(l,c,h){if(h===0)return;e.get("WEBGL_multi_draw").multiDrawArraysWEBGL(n,l,0,c,0,h);let d=0;for(let f=0;f<h;f++)d+=c[f];t.update(d,n,1)}this.setMode=i,this.render=s,this.renderInstances=o,this.renderMultiDraw=a}function aM(r,e,t,n){let i;function s(){if(i!==void 0)return i;if(e.has("EXT_texture_filter_anisotropic")===!0){let w=e.get("EXT_texture_filter_anisotropic");i=r.getParameter(w.MAX_TEXTURE_MAX_ANISOTROPY_EXT)}else i=0;return i}function o(w){return!(w!==tn&&n.convert(w)!==r.getParameter(r.IMPLEMENTATION_COLOR_READ_FORMAT))}function a(w){let v=w===Bn&&(e.has("EXT_color_buffer_half_float")||e.has("EXT_color_buffer_float"));return!(w!==fn&&w!==en&&!v&&n.convert(w)!==r.getParameter(r.IMPLEMENTATION_COLOR_READ_TYPE))}function l(w){if(w==="highp"){if(r.getShaderPrecisionFormat(r.VERTEX_SHADER,r.HIGH_FLOAT).precision>0&&r.getShaderPrecisionFormat(r.FRAGMENT_SHADER,r.HIGH_FLOAT).precision>0)return"highp";w="mediump"}return w==="mediump"&&r.getShaderPrecisionFormat(r.VERTEX_SHADER,r.MEDIUM_FLOAT).precision>0&&r.getShaderPrecisionFormat(r.FRAGMENT_SHADER,r.MEDIUM_FLOAT).precision>0?"mediump":"lowp"}let c=t.precision!==void 0?t.precision:"highp",h=l(c);h!==c&&(de("WebGLRenderer:",c,"not supported, using",h,"instead."),c=h);let u=t.logarithmicDepthBuffer===!0,d=t.reversedDepthBuffer===!0&&e.has("EXT_clip_control");t.reversedDepthBuffer===!0&&d===!1&&de("WebGLRenderer: Unable to use reversed depth buffer due to missing EXT_clip_control extension. Fallback to default depth buffer.");let f=r.getParameter(r.MAX_TEXTURE_IMAGE_UNITS),p=r.getParameter(r.MAX_VERTEX_TEXTURE_IMAGE_UNITS),_=r.getParameter(r.MAX_TEXTURE_SIZE),g=r.getParameter(r.MAX_CUBE_MAP_TEXTURE_SIZE),m=r.getParameter(r.MAX_VERTEX_ATTRIBS),y=r.getParameter(r.MAX_VERTEX_UNIFORM_VECTORS),b=r.getParameter(r.MAX_VARYING_VECTORS),x=r.getParameter(r.MAX_FRAGMENT_UNIFORM_VECTORS),T=r.getParameter(r.MAX_SAMPLES),S=r.getParameter(r.SAMPLES);return{isWebGL2:!0,getMaxAnisotropy:s,getMaxPrecision:l,textureFormatReadable:o,textureTypeReadable:a,precision:c,logarithmicDepthBuffer:u,reversedDepthBuffer:d,maxTextures:f,maxVertexTextures:p,maxTextureSize:_,maxCubemapSize:g,maxAttributes:m,maxVertexUniforms:y,maxVaryings:b,maxFragmentUniforms:x,maxSamples:T,samples:S}}function lM(r){let e=this,t=null,n=0,i=!1,s=!1,o=new gn,a=new qe,l={value:null,needsUpdate:!1};this.uniform=l,this.numPlanes=0,this.numIntersection=0,this.init=function(u,d){let f=u.length!==0||d||n!==0||i;return i=d,n=u.length,f},this.beginShadows=function(){s=!0,h(null)},this.endShadows=function(){s=!1},this.setGlobalState=function(u,d){t=h(u,d,0)},this.setState=function(u,d,f){let p=u.clippingPlanes,_=u.clipIntersection,g=u.clipShadows,m=r.get(u);if(!i||p===null||p.length===0||s&&!g)s?h(null):c();else{let y=s?0:n,b=y*4,x=m.clippingState||null;l.value=x,x=h(p,d,b,f);for(let T=0;T!==b;++T)x[T]=t[T];m.clippingState=x,this.numIntersection=_?this.numPlanes:0,this.numPlanes+=y}};function c(){l.value!==t&&(l.value=t,l.needsUpdate=n>0),e.numPlanes=n,e.numIntersection=0}function h(u,d,f,p){let _=u!==null?u.length:0,g=null;if(_!==0){if(g=l.value,p!==!0||g===null){let m=f+_*4,y=d.matrixWorldInverse;a.getNormalMatrix(y),(g===null||g.length<m)&&(g=new Float32Array(m));for(let b=0,x=f;b!==_;++b,x+=4)o.copy(u[b]).applyMatrix4(y,a),o.normal.toArray(g,x),g[x+3]=o.constant}l.value=g,l.needsUpdate=!0}return e.numPlanes=_,e.numIntersection=0,g}}var _o=4,cM=6,hM=20,uM=256,Fl=new _i,Rg=new ce,lf=null,cf=0,hf=0,uf=!1,dM=new R,Qs=new R,zl=class{constructor(e){this._renderer=e,this._pingPongRenderTarget=null,this._lodMax=0,this._cubeSize=0,this._sizeLods=[],this._lodMeshes=[],this._backgroundBox=null,this._cubemapMaterial=null,this._equirectMaterial=null,this._blurMaterial=null,this._ggxMaterial=null}fromScene(e,t=0,n=.1,i=100,s={}){let{size:o=256,position:a=dM}=s;lf=this._renderer.getRenderTarget(),cf=this._renderer.getActiveCubeFace(),hf=this._renderer.getActiveMipmapLevel(),uf=this._renderer.xr.enabled,this._renderer.xr.enabled=!1,this._setSize(o);let l=this._allocateTargets();return l.depthBuffer=!0,this._sceneToCubeUV(e,n,i,l,a),t>0&&this._blur(l,0,0,t),this._applyPMREM(l),this._cleanup(l),l}fromEquirectangular(e,t=null){return this._fromTexture(e,t)}fromCubemap(e,t=null){return this._fromTexture(e,t)}compileCubemapShader(){this._cubemapMaterial===null&&(this._cubemapMaterial=Pg(),this._compileMaterial(this._cubemapMaterial))}compileEquirectangularShader(){this._equirectMaterial===null&&(this._equirectMaterial=Ig(),this._compileMaterial(this._equirectMaterial))}dispose(){this._dispose(),this._cubemapMaterial!==null&&this._cubemapMaterial.dispose(),this._equirectMaterial!==null&&this._equirectMaterial.dispose(),this._backgroundBox!==null&&(this._backgroundBox.geometry.dispose(),this._backgroundBox.material.dispose())}_setSize(e){this._lodMax=Math.floor(Math.log2(e)),this._cubeSize=Math.pow(2,this._lodMax)}_dispose(){this._blurMaterial!==null&&this._blurMaterial.dispose(),this._ggxMaterial!==null&&this._ggxMaterial.dispose(),this._pingPongRenderTarget!==null&&this._pingPongRenderTarget.dispose();for(let e=0;e<this._lodMeshes.length;e++)this._lodMeshes[e].geometry.dispose()}_cleanup(e){this._renderer.setRenderTarget(lf,cf,hf),this._renderer.xr.enabled=uf,e.scissorTest=!1,go(e,0,0,e.width,e.height)}_fromTexture(e,t){e.mapping===ni||e.mapping===Oi?this._setSize(e.image.length===0?16:e.image[0].width||e.image[0].image.width):this._setSize(e.image.width/4),lf=this._renderer.getRenderTarget(),cf=this._renderer.getActiveCubeFace(),hf=this._renderer.getActiveMipmapLevel(),uf=this._renderer.xr.enabled,this._renderer.xr.enabled=!1;let n=t||this._allocateTargets();return this._textureToCubeUV(e,n),this._applyPMREM(n),this._cleanup(n),n}_allocateTargets(){let e=3*Math.max(this._cubeSize,112),t=4*this._cubeSize,n={magFilter:pt,minFilter:pt,generateMipmaps:!1,type:Bn,format:tn,colorSpace:nn,depthBuffer:!1},i=Cg(e,t,n);if(this._pingPongRenderTarget===null||this._pingPongRenderTarget.width!==e||this._pingPongRenderTarget.height!==t){this._pingPongRenderTarget!==null&&this._dispose(),this._pingPongRenderTarget=Cg(e,t,n);let{_lodMax:s}=this;({lodMeshes:this._lodMeshes,sizeLods:this._sizeLods}=fM(s)),this._blurMaterial=mM(s,e,t),this._ggxMaterial=pM(s,e,t)}return i}_compileMaterial(e){let t=new rt(new Oe,e);this._renderer.compile(t,Fl)}_sceneToCubeUV(e,t,n,i,s){let l=new Lt(90,1,t,n),c=[1,-1,1,1,1,1],h=[1,1,1,-1,-1,-1],u=this._renderer,d=u.autoClear,f=u.toneMapping;u.getClearColor(Rg),u.toneMapping=On,u.autoClear=!1,u.state.buffers.depth.getReversed()&&(u.setRenderTarget(i),u.clearDepth(),u.setRenderTarget(null)),this._backgroundBox===null&&(this._backgroundBox=new rt(new ui,new Kt({name:"PMREM.Background",side:qt,depthWrite:!1,depthTest:!1})));let _=this._backgroundBox,g=_.material,m=!1,y=e.background;y?y.isColor&&(g.color.copy(y),e.background=null,m=!0):(g.color.copy(Rg),m=!0);for(let b=0;b<6;b++){let x=b%3;x===0?(l.up.set(0,c[b],0),l.position.set(s.x,s.y,s.z),l.lookAt(s.x+h[b],s.y,s.z)):x===1?(l.up.set(0,0,c[b]),l.position.set(s.x,s.y,s.z),l.lookAt(s.x,s.y+h[b],s.z)):(l.up.set(0,c[b],0),l.position.set(s.x,s.y,s.z),l.lookAt(s.x,s.y,s.z+h[b]));let T=this._cubeSize;go(i,x*T,b>2?T:0,T,T),u.setRenderTarget(i),m&&u.render(_,l),u.render(e,l)}u.toneMapping=f,u.autoClear=d,e.background=y}_textureToCubeUV(e,t){let n=this._renderer,i=e.mapping===ni||e.mapping===Oi;i?(this._cubemapMaterial===null&&(this._cubemapMaterial=Pg()),this._cubemapMaterial.uniforms.flipEnvMap.value=e.isRenderTargetTexture===!1?-1:1):this._equirectMaterial===null&&(this._equirectMaterial=Ig());let s=i?this._cubemapMaterial:this._equirectMaterial,o=this._lodMeshes[0];o.material=s;let a=s.uniforms;a.envMap.value=e;let l=this._cubeSize;go(t,0,0,3*l,2*l),n.setRenderTarget(t),n.render(o,Fl)}_applyPMREM(e){let t=this._renderer,n=t.autoClear;t.autoClear=!1;let i=this._lodMeshes.length;for(let s=1;s<i;s++)this._applyGGXFilter(e,s-1,s);t.autoClear=n}_applyGGXFilter(e,t,n){let i=this._renderer,s=this._pingPongRenderTarget,o=this._ggxMaterial,a=this._lodMeshes[n];a.material=o;let l=o.uniforms,c=n/(this._lodMeshes.length-1),h=t/(this._lodMeshes.length-1),u=Math.sqrt(c*c-h*h),d=c*1.25,f=u*d,{_lodMax:p}=this,_=this._sizeLods[n],g=3*_*(n>p-_o?n-p+_o:0),m=4*(this._cubeSize-_);l.envMap.value=e.texture,l.roughness.value=f,l.mipInt.value=p-t,go(s,g,m,3*_,2*_),i.setRenderTarget(s),i.render(a,Fl),l.envMap.value=s.texture,l.roughness.value=0,l.mipInt.value=p-n,go(e,g,m,3*_,2*_),i.setRenderTarget(e),i.render(a,Fl)}_blur(e,t,n,i){let s=this._pingPongRenderTarget,o=Math.min(i,Math.PI)/Math.SQRT2;this._blurPass(e,s,t,n,o),this._blurPass(s,e,n,n,o)}_blurPass(e,t,n,i,s){let o=this._renderer,a=this._blurMaterial,l=this._lodMeshes[i];l.material=a;let c=a.uniforms;c.envMap.value=e.texture,c.sigma.value=s,c.mipInt.value=this._lodMax-n;let h=this._sizeLods[i],u=3*h*(i>this._lodMax-_o?i-this._lodMax+_o:0),d=4*(this._cubeSize-h);go(t,u,d,3*h,2*h),o.setRenderTarget(t),o.render(l,Fl)}};function fM(r){let e=[],t=[],n=r,i=r-_o+1+cM;for(let s=0;s<i;s++){let o=Math.pow(2,n);e.push(o);let a=1/(o-2),l=-a,c=1+a,h=[l,l,c,l,c,c,l,l,c,c,l,c],u=6,d=6,f=3,p=new Float32Array(f*d*u),_=new Float32Array(f*d*u);for(let m=0;m<u;m++){let y=m%3*2/3-1,b=m>2?0:-1,x=[y,b,0,y+2/3,b,0,y+2/3,b+1,0,y,b,0,y+2/3,b+1,0,y,b+1,0];p.set(x,f*d*m);for(let T=0;T<d;T++){let S=h[T*2]*2-1,w=h[T*2+1]*2-1;m===0?Qs.set(1,w,S):m===1?Qs.set(-S,1,-w):m===2?Qs.set(-S,w,1):m===3?Qs.set(-1,w,-S):m===4?Qs.set(-S,-1,w):Qs.set(S,w,-1),Qs.toArray(_,(m*d+T)*f)}}let g=new Oe;g.setAttribute("position",new Qe(p,f)),g.setAttribute("outputDirection",new Qe(_,f)),t.push(new rt(g,null)),n>_o&&n--}return{lodMeshes:t,sizeLods:e}}function Cg(r,e,t){let n=new Zt(r,e,t);return n.texture.mapping=Zs,n.texture.name="PMREM.cubeUv",n.scissorTest=!0,n}function go(r,e,t,n,i){r.viewport.set(e,t,n,i),r.scissor.set(e,t,n,i)}function pM(r,e,t){return new un({name:"PMREMGGXConvolution",defines:{GGX_SAMPLES:uM,CUBEUV_TEXEL_WIDTH:1/e,CUBEUV_TEXEL_HEIGHT:1/t,CUBEUV_MAX_MIP:`${r}.0`},uniforms:{envMap:{value:null},roughness:{value:0},mipInt:{value:0}},vertexShader:cu(),fragmentShader:`
+
+			precision highp float;
+			precision highp int;
+
+			varying vec3 vOutputDirection;
+
+			uniform sampler2D envMap;
+			uniform float roughness;
+			uniform float mipInt;
+
+			#define ENVMAP_TYPE_CUBE_UV
+			#include <cube_uv_reflection_fragment>
+
+			#define PI 3.14159265359
+
+			// Van der Corput radical inverse
+			float radicalInverse_VdC(uint bits) {
+				bits = (bits << 16u) | (bits >> 16u);
+				bits = ((bits & 0x55555555u) << 1u) | ((bits & 0xAAAAAAAAu) >> 1u);
+				bits = ((bits & 0x33333333u) << 2u) | ((bits & 0xCCCCCCCCu) >> 2u);
+				bits = ((bits & 0x0F0F0F0Fu) << 4u) | ((bits & 0xF0F0F0F0u) >> 4u);
+				bits = ((bits & 0x00FF00FFu) << 8u) | ((bits & 0xFF00FF00u) >> 8u);
+				return float(bits) * 2.3283064365386963e-10; // / 0x100000000
+			}
+
+			// Hammersley sequence
+			vec2 hammersley(uint i, uint N) {
+				return vec2(float(i) / float(N), radicalInverse_VdC(i));
+			}
+
+			// GGX VNDF importance sampling (Eric Heitz 2018)
+			// "Sampling the GGX Distribution of Visible Normals"
+			// https://jcgt.org/published/0007/04/01/
+			vec3 importanceSampleGGX_VNDF(vec2 Xi, vec3 V, float roughness) {
+				float alpha = roughness * roughness;
+
+				// Section 4.1: Orthonormal basis
+				vec3 T1 = vec3(1.0, 0.0, 0.0);
+				vec3 T2 = cross(V, T1);
+
+				// Section 4.2: Parameterization of projected area
+				float r = sqrt(Xi.x);
+				float phi = 2.0 * PI * Xi.y;
+				float t1 = r * cos(phi);
+				float t2 = r * sin(phi);
+				float s = 0.5 * (1.0 + V.z);
+				t2 = (1.0 - s) * sqrt(1.0 - t1 * t1) + s * t2;
+
+				// Section 4.3: Reprojection onto hemisphere
+				vec3 Nh = t1 * T1 + t2 * T2 + sqrt(max(0.0, 1.0 - t1 * t1 - t2 * t2)) * V;
+
+				// Section 3.4: Transform back to ellipsoid configuration
+				return normalize(vec3(alpha * Nh.x, alpha * Nh.y, max(0.0, Nh.z)));
+			}
+
+			void main() {
+				vec3 N = normalize(vOutputDirection);
+				vec3 V = N; // Assume view direction equals normal for pre-filtering
+
+				vec3 prefilteredColor = vec3(0.0);
+				float totalWeight = 0.0;
+
+				// For very low roughness, just sample the environment directly
+				if (roughness < 0.001) {
+					gl_FragColor = vec4(bilinearCubeUV(envMap, N, mipInt), 1.0);
+					return;
+				}
+
+				// Tangent space basis for VNDF sampling
+				vec3 up = abs(N.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0);
+				vec3 tangent = normalize(cross(up, N));
+				vec3 bitangent = cross(N, tangent);
+
+				for(uint i = 0u; i < uint(GGX_SAMPLES); i++) {
+					vec2 Xi = hammersley(i, uint(GGX_SAMPLES));
+
+					// For PMREM, V = N, so in tangent space V is always (0, 0, 1)
+					vec3 H_tangent = importanceSampleGGX_VNDF(Xi, vec3(0.0, 0.0, 1.0), roughness);
+
+					// Transform H back to world space
+					vec3 H = normalize(tangent * H_tangent.x + bitangent * H_tangent.y + N * H_tangent.z);
+					vec3 L = normalize(2.0 * dot(V, H) * H - V);
+
+					float NdotL = max(dot(N, L), 0.0);
+
+					if(NdotL > 0.0) {
+						// Sample environment at fixed mip level
+						// VNDF importance sampling handles the distribution filtering
+						vec3 sampleColor = bilinearCubeUV(envMap, L, mipInt);
+
+						// Weight by NdotL for the split-sum approximation
+						// VNDF PDF naturally accounts for the visible microfacet distribution
+						prefilteredColor += sampleColor * NdotL;
+						totalWeight += NdotL;
+					}
+				}
+
+				if (totalWeight > 0.0) {
+					prefilteredColor = prefilteredColor / totalWeight;
+				}
+
+				gl_FragColor = vec4(prefilteredColor, 1.0);
+			}
+		`,blending:ti,depthTest:!1,depthWrite:!1})}function mM(r,e,t){return new un({name:"SphericalGaussianBlur",defines:{SAMPLES:hM,CUBEUV_TEXEL_WIDTH:1/e,CUBEUV_TEXEL_HEIGHT:1/t,CUBEUV_MAX_MIP:`${r}.0`},uniforms:{envMap:{value:null},sigma:{value:0},mipInt:{value:0}},vertexShader:cu(),fragmentShader:`
+
+			precision highp float;
+			precision highp int;
+
+			varying vec3 vOutputDirection;
+
+			uniform sampler2D envMap;
+			uniform float sigma;
+			uniform float mipInt;
+
+			#define ENVMAP_TYPE_CUBE_UV
+			#include <cube_uv_reflection_fragment>
+
+			#define PI 3.14159265359
+			#define GOLDEN_ANGLE 2.39996322973
+
+			void main() {
+
+				if ( sigma == 0.0 ) {
+
+					gl_FragColor = vec4( bilinearCubeUV( envMap, vOutputDirection, mipInt ), 1.0 );
+					return;
+
+				}
+
+				vec3 outputDirection = normalize( vOutputDirection );
+
+				vec3 up = abs( outputDirection.z ) < 0.999 ? vec3( 0.0, 0.0, 1.0 ) : vec3( 1.0, 0.0, 0.0 );
+				vec3 tangent = normalize( cross( up, outputDirection ) );
+				vec3 bitangent = cross( outputDirection, tangent );
+
+				// Truncate the kernel at three standard deviations or at the antipode.
+				float thetaMax = min( 3.0 * sigma, PI );
+				float truncation = 1.0 - exp( - 0.5 * thetaMax * thetaMax / ( sigma * sigma ) );
+
+				vec3 accumColor = vec3( 0.0 );
+				float accumWeight = 0.0;
+
+				for ( int i = 0; i < SAMPLES; i ++ ) {
+
+					// Stratified inverse-CDF sampling of the Gaussian, placed on a golden-angle spiral.
+					float stratum = ( float( i ) + 0.5 ) / float( SAMPLES );
+					float theta = sigma * sqrt( - 2.0 * log( 1.0 - stratum * truncation ) );
+					float phi = float( i ) * GOLDEN_ANGLE;
+
+					vec3 offset = cos( phi ) * tangent + sin( phi ) * bitangent;
+					vec3 sampleDirection = cos( theta ) * outputDirection + sin( theta ) * offset;
+
+					// Correct the planar sample density to solid angle.
+					float weight = sin( theta ) / theta;
+
+					accumColor += weight * bilinearCubeUV( envMap, sampleDirection, mipInt );
+					accumWeight += weight;
+
+				}
+
+				gl_FragColor = vec4( accumColor / accumWeight, 1.0 );
+
+			}
+		`,blending:ti,depthTest:!1,depthWrite:!1})}function Ig(){return new un({name:"EquirectangularToCubeUV",uniforms:{envMap:{value:null}},vertexShader:cu(),fragmentShader:`
+
+			precision mediump float;
+			precision mediump int;
+
+			varying vec3 vOutputDirection;
+
+			uniform sampler2D envMap;
+
+			#include <common>
+
+			void main() {
+
+				vec3 outputDirection = normalize( vOutputDirection );
+				vec2 uv = equirectUv( outputDirection );
+
+				gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );
+
+			}
+		`,blending:ti,depthTest:!1,depthWrite:!1})}function Pg(){return new un({name:"CubemapToCubeUV",uniforms:{envMap:{value:null},flipEnvMap:{value:-1}},vertexShader:cu(),fragmentShader:`
+
+			precision mediump float;
+			precision mediump int;
+
+			uniform float flipEnvMap;
+
+			varying vec3 vOutputDirection;
+
+			uniform samplerCube envMap;
+
+			void main() {
+
+				gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );
+
+			}
+		`,blending:ti,depthTest:!1,depthWrite:!1})}function cu(){return`
+
+		precision mediump float;
+		precision mediump int;
+
+		attribute vec3 outputDirection;
+
+		varying vec3 vOutputDirection;
+
+		void main() {
+
+			vOutputDirection = outputDirection;
+			gl_Position = vec4( position, 1.0 );
+
+		}
+	`}var kl=class extends Zt{constructor(e=1,t={}){super(e,e,t),this.isWebGLCubeRenderTarget=!0;let n={width:e,height:e,depth:1},i=[n,n,n,n,n,n];this.texture=new ss(i),this._setTextureOptions(t),this.texture.isRenderTargetTexture=!0}fromEquirectangularTexture(e,t){this.texture.type=t.type,this.texture.colorSpace=t.colorSpace,this.texture.generateMipmaps=t.generateMipmaps,this.texture.minFilter=t.minFilter,this.texture.magFilter=t.magFilter;let n={uniforms:{tEquirect:{value:null}},vertexShader:`
+
+				varying vec3 vWorldDirection;
+
+				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {
+
+					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );
+
+				}
+
+				void main() {
+
+					vWorldDirection = transformDirection( position, modelMatrix );
+
+					#include <begin_vertex>
+					#include <project_vertex>
+
+				}
+			`,fragmentShader:`
+
+				uniform sampler2D tEquirect;
+
+				varying vec3 vWorldDirection;
+
+				#include <common>
+
+				void main() {
+
+					vec3 direction = normalize( vWorldDirection );
+
+					vec2 sampleUV = equirectUv( direction );
+
+					gl_FragColor = texture2D( tEquirect, sampleUV );
+
+				}
+			`},i=new ui(5,5,5),s=new un({name:"CubemapFromEquirect",uniforms:$s(n.uniforms),vertexShader:n.vertexShader,fragmentShader:n.fragmentShader,side:qt,blending:ti});s.uniforms.tEquirect.value=t;let o=new rt(i,s),a=t.minFilter;return t.minFilter===vn&&(t.minFilter=pt),new Ga(1,10,this).update(e,o),t.minFilter=a,o.geometry.dispose(),o.material.dispose(),this}clear(e,t=!0,n=!0,i=!0){let s=e.getRenderTarget();for(let o=0;o<6;o++)e.setRenderTarget(this,o),e.clear(t,n,i);e.setRenderTarget(s)}};function gM(r){let e=new WeakMap,t=new WeakMap,n=null;function i(d,f=!1){return d==null?null:f?o(d):s(d)}function s(d){if(d&&d.isTexture){let f=d.mapping;if(f===io||f===so)if(e.has(d)){let p=e.get(d).texture;return a(p,d.mapping)}else{let p=d.image;if(p&&p.height>0){let _=new kl(p.height);return _.fromEquirectangularTexture(r,d),e.set(d,_),d.addEventListener("dispose",c),a(_.texture,d.mapping)}else return null}}return d}function o(d){if(d&&d.isTexture){let f=d.mapping,p=f===io||f===so,_=f===ni||f===Oi;if(p||_){let g=t.get(d),m=g!==void 0?g.texture.pmremVersion:0;if(d.isRenderTargetTexture&&d.pmremVersion!==m)return n===null&&(n=new zl(r)),g=p?n.fromEquirectangular(d,g):n.fromCubemap(d,g),g.texture.pmremVersion=d.pmremVersion,t.set(d,g),g.texture;if(g!==void 0)return g.texture;{let y=d.image;return p&&y&&y.height>0||_&&y&&l(y)?(n===null&&(n=new zl(r)),g=p?n.fromEquirectangular(d):n.fromCubemap(d),g.texture.pmremVersion=d.pmremVersion,t.set(d,g),d.addEventListener("dispose",h),g.texture):null}}}return d}function a(d,f){return f===io?d.mapping=ni:f===so&&(d.mapping=Oi),d}function l(d){let f=0,p=6;for(let _=0;_<p;_++)d[_]!==void 0&&f++;return f===p}function c(d){let f=d.target;f.removeEventListener("dispose",c);let p=e.get(f);p!==void 0&&(e.delete(f),p.dispose())}function h(d){let f=d.target;f.removeEventListener("dispose",h);let p=t.get(f);p!==void 0&&(t.delete(f),p.dispose())}function u(){e=new WeakMap,t=new WeakMap,n!==null&&(n.dispose(),n=null)}return{get:i,dispose:u}}function _M(r){let e={};function t(n){if(e[n]!==void 0)return e[n];let i=r.getExtension(n);return e[n]=i,i}return{has:function(n){return t(n)!==null},init:function(){t("EXT_color_buffer_float"),t("WEBGL_clip_cull_distance"),t("OES_texture_float_linear"),t("EXT_color_buffer_half_float"),t("WEBGL_multisampled_render_to_texture"),t("WEBGL_render_shared_exponent")},get:function(n){let i=t(n);return i===null&&ai("WebGLRenderer: "+n+" extension not supported."),i}}}function xM(r,e,t,n){let i={},s=new WeakMap;function o(u){let d=u.target;d.index!==null&&e.remove(d.index);for(let p in d.attributes)e.remove(d.attributes[p]);d.removeEventListener("dispose",o),delete i[d.id];let f=s.get(d);f&&(e.remove(f),s.delete(d)),n.releaseStatesOfGeometry(d),d.isInstancedBufferGeometry===!0&&delete d._maxInstanceCount,t.memory.geometries--}function a(u,d){return i[d.id]===!0||(d.addEventListener("dispose",o),i[d.id]=!0,t.memory.geometries++),d}function l(u){let d=u.attributes;for(let f in d)e.update(d[f],r.ARRAY_BUFFER)}function c(u){let d=[],f=u.index,p=u.attributes.position,_=0;if(p===void 0)return;if(f!==null){let y=f.array;_=f.version;for(let b=0,x=y.length;b<x;b+=3){let T=y[b+0],S=y[b+1],w=y[b+2];d.push(T,S,S,w,w,T)}}else{let y=p.array;_=p.version;for(let b=0,x=y.length/3-1;b<x;b+=3){let T=b+0,S=b+1,w=b+2;d.push(T,S,S,w,w,T)}}let g=new(p.count>=65535?Pr:Ir)(d,1);g.version=_;let m=s.get(u);m&&e.remove(m),s.set(u,g)}function h(u){let d=s.get(u);if(d){let f=u.index;f!==null&&d.version<f.version&&c(u)}else c(u);return s.get(u)}return{get:a,update:l,getWireframeAttribute:h}}function yM(r,e,t){let n;function i(u){n=u}let s,o;function a(u){s=u.type,o=u.bytesPerElement}function l(u,d){r.drawElements(n,d,s,u*o),t.update(d,n,1)}function c(u,d,f){f!==0&&(r.drawElementsInstanced(n,d,s,u*o,f),t.update(d,n,f))}function h(u,d,f){if(f===0)return;e.get("WEBGL_multi_draw").multiDrawElementsWEBGL(n,d,0,s,u,0,f);let _=0;for(let g=0;g<f;g++)_+=d[g];t.update(_,n,1)}this.setMode=i,this.setIndex=a,this.render=l,this.renderInstances=c,this.renderMultiDraw=h}function vM(r){let e={geometries:0,textures:0},t={frame:0,calls:0,triangles:0,points:0,lines:0};function n(s,o,a){switch(t.calls++,o){case r.TRIANGLES:t.triangles+=a*(s/3);break;case r.LINES:t.lines+=a*(s/2);break;case r.LINE_STRIP:t.lines+=a*(s-1);break;case r.LINE_LOOP:t.lines+=a*s;break;case r.POINTS:t.points+=a*s;break;default:Pe("WebGLInfo: Unknown draw mode:",o);break}}function i(){t.calls=0,t.triangles=0,t.points=0,t.lines=0}return{memory:e,render:t,programs:null,autoReset:!0,reset:i,update:n}}function MM(r,e,t){let n=new WeakMap,i=new mt;function s(o,a,l){let c=o.morphTargetInfluences,h=a.morphAttributes.position||a.morphAttributes.normal||a.morphAttributes.color,u=h!==void 0?h.length:0,d=n.get(a);if(d===void 0||d.count!==u){let E=function(){w.dispose(),n.delete(a),a.removeEventListener("dispose",E)};d!==void 0&&d.texture.dispose();let f=a.morphAttributes.position!==void 0,p=a.morphAttributes.normal!==void 0,_=a.morphAttributes.color!==void 0,g=a.morphAttributes.position||[],m=a.morphAttributes.normal||[],y=a.morphAttributes.color||[],b=0;f===!0&&(b=1),p===!0&&(b=2),_===!0&&(b=3);let x=a.attributes.position.count*b,T=1;x>e.maxTextureSize&&(T=Math.ceil(x/e.maxTextureSize),x=e.maxTextureSize);let S=new Float32Array(x*T*4*u),w=new ws(S,x,T,u);w.type=en,w.needsUpdate=!0;let v=b*4;for(let I=0;I<u;I++){let P=g[I],F=m[I],z=y[I],N=x*T*4*I;for(let B=0;B<P.count;B++){let H=B*v;f===!0&&(i.fromBufferAttribute(P,B),S[N+H+0]=i.x,S[N+H+1]=i.y,S[N+H+2]=i.z,S[N+H+3]=0),p===!0&&(i.fromBufferAttribute(F,B),S[N+H+4]=i.x,S[N+H+5]=i.y,S[N+H+6]=i.z,S[N+H+7]=0),_===!0&&(i.fromBufferAttribute(z,B),S[N+H+8]=i.x,S[N+H+9]=i.y,S[N+H+10]=i.z,S[N+H+11]=z.itemSize===4?i.w:1)}}d={count:u,texture:w,size:new J(x,T)},n.set(a,d),a.addEventListener("dispose",E)}if(o.isInstancedMesh===!0&&o.morphTexture!==null)l.getUniforms().setValue(r,"morphTexture",o.morphTexture,t);else{let f=0;for(let _=0;_<c.length;_++)f+=c[_];let p=a.morphTargetsRelative?1:1-f;l.getUniforms().setValue(r,"morphTargetBaseInfluence",p),l.getUniforms().setValue(r,"morphTargetInfluences",c)}l.getUniforms().setValue(r,"morphTargetsTexture",d.texture,t),l.getUniforms().setValue(r,"morphTargetsTextureSize",d.size)}return{update:s}}function SM(r,e,t,n,i){let s=new WeakMap;function o(c){let h=i.render.frame,u=c.geometry,d=e.get(c,u);if(s.get(d)!==h&&(e.update(d),s.set(d,h)),c.isInstancedMesh&&(c.hasEventListener("dispose",l)===!1&&c.addEventListener("dispose",l),s.get(c)!==h&&(t.update(c.instanceMatrix,r.ARRAY_BUFFER),c.instanceColor!==null&&t.update(c.instanceColor,r.ARRAY_BUFFER),s.set(c,h))),c.isSkinnedMesh){let f=c.skeleton;s.get(f)!==h&&(f.update(),s.set(f,h))}return d}function a(){s=new WeakMap}function l(c){let h=c.target;h.removeEventListener("dispose",l),n.releaseStatesOfObject(h),t.remove(h.instanceMatrix),h.instanceColor!==null&&t.remove(h.instanceColor)}return{update:o,dispose:a}}var bM={[Wh]:"LINEAR_TONE_MAPPING",[Xh]:"REINHARD_TONE_MAPPING",[qh]:"CINEON_TONE_MAPPING",[Yh]:"ACES_FILMIC_TONE_MAPPING",[Kh]:"AGX_TONE_MAPPING",[Jh]:"NEUTRAL_TONE_MAPPING",[Zh]:"CUSTOM_TONE_MAPPING"};function TM(r,e,t,n,i,s){let o=new Zt(e,t,{type:r,depthBuffer:i,stencilBuffer:s,samples:n?4:0,storeMultisampledDepthBuffer:!1,storeMultisampledStencilBuffer:!1,resolveDepthBuffer:!1,resolveStencilBuffer:!1}),a=null,l=null,c=new Oe;c.setAttribute("position",new fe([-1,3,0,-1,-1,0,3,-1,0],3)),c.setAttribute("uv",new fe([0,2,0,0,2,0],2));let h=new Wr({uniforms:{tDiffuse:{value:null}},vertexShader:`
+			precision highp float;
+
+			uniform mat4 modelViewMatrix;
+			uniform mat4 projectionMatrix;
+
+			attribute vec3 position;
+			attribute vec2 uv;
+
+			varying vec2 vUv;
+
+			void main() {
+				vUv = uv;
+				gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+			}`,fragmentShader:`
+			precision highp float;
+
+			uniform sampler2D tDiffuse;
+
+			varying vec2 vUv;
+
+			#include <tonemapping_pars_fragment>
+			#include <colorspace_pars_fragment>
+
+			void main() {
+				gl_FragColor = texture2D( tDiffuse, vUv );
+
+				#ifdef LINEAR_TONE_MAPPING
+					gl_FragColor.rgb = LinearToneMapping( gl_FragColor.rgb );
+				#elif defined( REINHARD_TONE_MAPPING )
+					gl_FragColor.rgb = ReinhardToneMapping( gl_FragColor.rgb );
+				#elif defined( CINEON_TONE_MAPPING )
+					gl_FragColor.rgb = CineonToneMapping( gl_FragColor.rgb );
+				#elif defined( ACES_FILMIC_TONE_MAPPING )
+					gl_FragColor.rgb = ACESFilmicToneMapping( gl_FragColor.rgb );
+				#elif defined( AGX_TONE_MAPPING )
+					gl_FragColor.rgb = AgXToneMapping( gl_FragColor.rgb );
+				#elif defined( NEUTRAL_TONE_MAPPING )
+					gl_FragColor.rgb = NeutralToneMapping( gl_FragColor.rgb );
+				#elif defined( CUSTOM_TONE_MAPPING )
+					gl_FragColor.rgb = CustomToneMapping( gl_FragColor.rgb );
+				#endif
+
+				#ifdef SRGB_TRANSFER
+					gl_FragColor = sRGBTransferOETF( gl_FragColor );
+				#endif
+			}`,depthTest:!1,depthWrite:!1}),u=new rt(c,h),d=new _i(-1,1,1,-1,0,1),f=null,p=null,_=!1,g,m=null,y=[],b=!1;this.setSize=function(x,T){o.setSize(x,T),a!==null&&a.setSize(x,T),l!==null&&l.setSize(x,T);for(let S=0;S<y.length;S++){let w=y[S];w.setSize&&w.setSize(x,T)}},this.setEffects=function(x){y=x,b=y.length>0&&y[0].isRenderPass===!0;let T=o.width,S=o.height;y.length>0&&a===null&&(a=new Zt(T,S,{type:Bn,depthBuffer:!1,stencilBuffer:!1}),l=new Zt(T,S,{type:Bn,depthBuffer:!1,stencilBuffer:!1}));for(let w=0;w<y.length;w++){let v=y[w];v.setSize&&v.setSize(T,S)}},this.begin=function(x,T){if(_||x.toneMapping===On&&y.length===0)return!1;if(m=T,T!==null){let S=T.width,w=T.height;(o.width!==S||o.height!==w)&&this.setSize(S,w)}return b===!1&&x.setRenderTarget(o),g=x.toneMapping,x.toneMapping=On,!0},this.hasRenderPass=function(){return b},this.end=function(x,T){x.toneMapping=g,_=!0;let S=o,w=a;for(let v=0;v<y.length;v++){let E=y[v];E.enabled!==!1&&(E.render(x,w,S,T),E.needsSwap!==!1&&(S=w,w=w===a?l:a))}if(f!==x.outputColorSpace||p!==x.toneMapping){f=x.outputColorSpace,p=x.toneMapping,h.defines={},Je.getTransfer(f)===ht&&(h.defines.SRGB_TRANSFER="");let v=bM[p];v&&(h.defines[v]=""),h.needsUpdate=!0}h.uniforms.tDiffuse.value=S.texture,x.setRenderTarget(m),x.render(u,d),m=null,_=!1},this.isCompositing=function(){return _},this.dispose=function(){o.dispose(),a!==null&&a.dispose(),l!==null&&l.dispose(),c.dispose(),h.dispose()}}var jg=new Et,pf=new Pi(1,1),$g=new ws,Qg=new Rs,e_=new ss,Lg=[],Ng=[],Dg=new Float32Array(16),Ug=new Float32Array(9),Fg=new Float32Array(4);function yo(r,e,t){let n=r[0];if(n<=0||n>0)return r;let i=e*t,s=Lg[i];if(s===void 0&&(s=new Float32Array(i),Lg[i]=s),e!==0){n.toArray(s,0);for(let o=1,a=0;o!==e;++o)a+=t,r[o].toArray(s,a)}return s}function Vt(r,e){if(r.length!==e.length)return!1;for(let t=0,n=r.length;t<n;t++)if(r[t]!==e[t])return!1;return!0}function Gt(r,e){for(let t=0,n=e.length;t<n;t++)r[t]=e[t]}function hu(r,e){let t=Ng[e];t===void 0&&(t=new Int32Array(e),Ng[e]=t);for(let n=0;n!==e;++n)t[n]=r.allocateTextureUnit();return t}function AM(r,e){let t=this.cache;t[0]!==e&&(r.uniform1f(this.addr,e),t[0]=e)}function EM(r,e){let t=this.cache;if(e.x!==void 0)(t[0]!==e.x||t[1]!==e.y)&&(r.uniform2f(this.addr,e.x,e.y),t[0]=e.x,t[1]=e.y);else{if(Vt(t,e))return;r.uniform2fv(this.addr,e),Gt(t,e)}}function wM(r,e){let t=this.cache;if(e.x!==void 0)(t[0]!==e.x||t[1]!==e.y||t[2]!==e.z)&&(r.uniform3f(this.addr,e.x,e.y,e.z),t[0]=e.x,t[1]=e.y,t[2]=e.z);else if(e.r!==void 0)(t[0]!==e.r||t[1]!==e.g||t[2]!==e.b)&&(r.uniform3f(this.addr,e.r,e.g,e.b),t[0]=e.r,t[1]=e.g,t[2]=e.b);else{if(Vt(t,e))return;r.uniform3fv(this.addr,e),Gt(t,e)}}function RM(r,e){let t=this.cache;if(e.x!==void 0)(t[0]!==e.x||t[1]!==e.y||t[2]!==e.z||t[3]!==e.w)&&(r.uniform4f(this.addr,e.x,e.y,e.z,e.w),t[0]=e.x,t[1]=e.y,t[2]=e.z,t[3]=e.w);else{if(Vt(t,e))return;r.uniform4fv(this.addr,e),Gt(t,e)}}function CM(r,e){let t=this.cache,n=e.elements;if(n===void 0){if(Vt(t,e))return;r.uniformMatrix2fv(this.addr,!1,e),Gt(t,e)}else{if(Vt(t,n))return;Fg.set(n),r.uniformMatrix2fv(this.addr,!1,Fg),Gt(t,n)}}function IM(r,e){let t=this.cache,n=e.elements;if(n===void 0){if(Vt(t,e))return;r.uniformMatrix3fv(this.addr,!1,e),Gt(t,e)}else{if(Vt(t,n))return;Ug.set(n),r.uniformMatrix3fv(this.addr,!1,Ug),Gt(t,n)}}function PM(r,e){let t=this.cache,n=e.elements;if(n===void 0){if(Vt(t,e))return;r.uniformMatrix4fv(this.addr,!1,e),Gt(t,e)}else{if(Vt(t,n))return;Dg.set(n),r.uniformMatrix4fv(this.addr,!1,Dg),Gt(t,n)}}function LM(r,e){let t=this.cache;t[0]!==e&&(r.uniform1i(this.addr,e),t[0]=e)}function NM(r,e){let t=this.cache;if(e.x!==void 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0)(t[0]!==e.x||t[1]!==e.y||t[2]!==e.z)&&(r.uniform3ui(this.addr,e.x,e.y,e.z),t[0]=e.x,t[1]=e.y,t[2]=e.z);else{if(Vt(t,e))return;r.uniform3uiv(this.addr,e),Gt(t,e)}}function zM(r,e){let t=this.cache;if(e.x!==void 0)(t[0]!==e.x||t[1]!==e.y||t[2]!==e.z||t[3]!==e.w)&&(r.uniform4ui(this.addr,e.x,e.y,e.z,e.w),t[0]=e.x,t[1]=e.y,t[2]=e.z,t[3]=e.w);else{if(Vt(t,e))return;r.uniform4uiv(this.addr,e),Gt(t,e)}}function kM(r,e,t){let n=this.cache,i=t.allocateTextureUnit();n[0]!==i&&(r.uniform1i(this.addr,i),n[0]=i);let s;this.type===r.SAMPLER_2D_SHADOW?(pf.compareFunction=t.isReversedDepthBuffer()?Dl:Nl,s=pf):s=jg,t.setTexture2D(e||s,i)}function VM(r,e,t){let n=this.cache,i=t.allocateTextureUnit();n[0]!==i&&(r.uniform1i(this.addr,i),n[0]=i),t.setTexture3D(e||Qg,i)}function GM(r,e,t){let n=this.cache,i=t.allocateTextureUnit();n[0]!==i&&(r.uniform1i(this.addr,i),n[0]=i),t.setTextureCube(e||e_,i)}function HM(r,e,t){let 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+`+s+`
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+`+pS(r.getShaderSource(e),a)}else return s}function gS(r,e){let t=mS(e);return[`vec4 ${r}( vec4 value ) {`,`	return ${t[1]}( vec4( value.rgb * ${t[0]}, value.a ) );`,"}"].join(`
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+`)}function vS(r){return[r.extensionClipCullDistance?"#extension GL_ANGLE_clip_cull_distance : require":"",r.extensionMultiDraw?"#extension GL_ANGLE_multi_draw : require":""].filter(Bl).join(`
+`)}function MS(r){let e=[];for(let t in r){let n=r[t];n!==!1&&e.push("#define "+t+" "+n)}return e.join(`
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+	precision ${r.precision} int;
+	precision ${r.precision} sampler2D;
+	precision ${r.precision} samplerCube;
+	precision ${r.precision} sampler3D;
+	precision ${r.precision} sampler2DArray;
+	precision ${r.precision} sampler2DShadow;
+	precision ${r.precision} samplerCubeShadow;
+	precision ${r.precision} sampler2DArrayShadow;
+	precision ${r.precision} isampler2D;
+	precision ${r.precision} isampler3D;
+	precision ${r.precision} isamplerCube;
+	precision ${r.precision} isampler2DArray;
+	precision ${r.precision} usampler2D;
+	precision ${r.precision} usampler3D;
+	precision ${r.precision} usamplerCube;
+	precision ${r.precision} usampler2DArray;
+	`;return r.precision==="highp"?e+=`
+#define HIGH_PRECISION`:r.precision==="mediump"?e+=`
+#define MEDIUM_PRECISION`:r.precision==="lowp"&&(e+=`
+#define LOW_PRECISION`),e}var RS={[to]:"SHADOWMAP_TYPE_PCF",[qs]:"SHADOWMAP_TYPE_VSM"};function CS(r){return RS[r.shadowMapType]||"SHADOWMAP_TYPE_BASIC"}var IS={[ni]:"ENVMAP_TYPE_CUBE",[Oi]:"ENVMAP_TYPE_CUBE",[Zs]:"ENVMAP_TYPE_CUBE_UV"};function PS(r){return r.envMap===!1?"ENVMAP_TYPE_CUBE":IS[r.envMapMode]||"ENVMAP_TYPE_CUBE"}var LS={[Oi]:"ENVMAP_MODE_REFRACTION"};function NS(r){return r.envMap===!1?"ENVMAP_MODE_REFLECTION":LS[r.envMapMode]||"ENVMAP_MODE_REFLECTION"}var DS={[no]:"ENVMAP_BLENDING_MULTIPLY",[Bd]:"ENVMAP_BLENDING_MIX",[zd]:"ENVMAP_BLENDING_ADD"};function US(r){return r.envMap===!1?"ENVMAP_BLENDING_NONE":DS[r.combine]||"ENVMAP_BLENDING_NONE"}function FS(r){let e=r.envMapCubeUVHeight;if(e===null)return null;let t=Math.log2(e)-2,n=1/e;return{texelWidth:1/(3*Math.max(Math.pow(2,t),112)),texelHeight:n,maxMip:t}}function OS(r,e,t,n){let i=r.getContext(),s=t.defines,o=t.vertexShader,a=t.fragmentShader,l=CS(t),c=PS(t),h=NS(t),u=US(t),d=FS(t),f=vS(t),p=MS(s),_=i.createProgram(),g,m,y=t.glslVersion?"#version "+t.glslVersion+`
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MORPHTARGETS_TEXTURE_STRIDE "+t.morphTextureStride:"",t.morphTargetsCount>0?"#define MORPHTARGETS_COUNT "+t.morphTargetsCount:"",t.doubleSided?"#define DOUBLE_SIDED":"",t.flipSided?"#define FLIP_SIDED":"",t.shadowMapEnabled?"#define USE_SHADOWMAP":"",t.shadowMapEnabled?"#define "+l:"",t.sizeAttenuation?"#define USE_SIZEATTENUATION":"",t.numLightProbes>0?"#define USE_LIGHT_PROBES":"",t.logarithmicDepthBuffer?"#define USE_LOGARITHMIC_DEPTH_BUFFER":"",t.reversedDepthBuffer?"#define USE_REVERSED_DEPTH_BUFFER":"","uniform mat4 modelMatrix;","uniform mat4 modelViewMatrix;","uniform mat4 projectionMatrix;","uniform mat4 viewMatrix;","uniform mat3 normalMatrix;","uniform vec3 cameraPosition;","uniform bool isOrthographic;","#ifdef USE_INSTANCING","	attribute mat4 instanceMatrix;","#endif","#ifdef USE_INSTANCING_COLOR","	attribute vec3 instanceColor;","#endif","#ifdef USE_INSTANCING_MORPH","	uniform sampler2D morphTexture;","#endif","attribute vec3 position;","attribute vec3 normal;","attribute vec2 uv;","#ifdef USE_UV1","	attribute vec2 uv1;","#endif","#ifdef USE_UV2","	attribute vec2 uv2;","#endif","#ifdef USE_UV3","	attribute vec2 uv3;","#endif","#ifdef USE_TANGENT","	attribute vec4 tangent;","#endif","#if defined( USE_COLOR_ALPHA )","	attribute vec4 color;","#elif defined( USE_COLOR )","	attribute vec3 color;","#endif","#ifdef USE_SKINNING","	attribute vec4 skinIndex;","	attribute vec4 skinWeight;","#endif",`
+`].filter(Bl).join(`
+`),m=[Wg(t),"#define SHADER_TYPE "+t.shaderType,"#define SHADER_NAME "+t.shaderName,p,t.useFog&&t.fog?"#define USE_FOG":"",t.useFog&&t.fogExp2?"#define FOG_EXP2":"",t.alphaToCoverage?"#define ALPHA_TO_COVERAGE":"",t.map?"#define USE_MAP":"",t.matcap?"#define USE_MATCAP":"",t.envMap?"#define USE_ENVMAP":"",t.envMap?"#define "+c:"",t.envMap?"#define "+h:"",t.envMap?"#define "+u:"",d?"#define CUBEUV_TEXEL_WIDTH "+d.texelWidth:"",d?"#define CUBEUV_TEXEL_HEIGHT "+d.texelHeight:"",d?"#define CUBEUV_MAX_MIP "+d.maxMip+".0":"",t.lightMap?"#define USE_LIGHTMAP":"",t.aoMap?"#define USE_AOMAP":"",t.bumpMap?"#define USE_BUMPMAP":"",t.normalMap?"#define USE_NORMALMAP":"",t.normalMapObjectSpace?"#define USE_NORMALMAP_OBJECTSPACE":"",t.normalMapTangentSpace?"#define USE_NORMALMAP_TANGENTSPACE":"",t.packedNormalMap?"#define USE_PACKED_NORMALMAP":"",t.emissiveMap?"#define USE_EMISSIVEMAP":"",t.anisotropy?"#define USE_ANISOTROPY":"",t.anisotropyMap?"#define USE_ANISOTROPYMAP":"",t.clearcoat?"#define USE_CLEARCOAT":"",t.clearcoatMap?"#define USE_CLEARCOATMAP":"",t.clearcoatRoughnessMap?"#define USE_CLEARCOAT_ROUGHNESSMAP":"",t.clearcoatNormalMap?"#define USE_CLEARCOAT_NORMALMAP":"",t.dispersion?"#define USE_DISPERSION":"",t.retroreflection?"#define USE_RETROREFLECTION":"",t.iridescence?"#define USE_IRIDESCENCE":"",t.iridescenceMap?"#define USE_IRIDESCENCEMAP":"",t.iridescenceThicknessMap?"#define USE_IRIDESCENCE_THICKNESSMAP":"",t.specularMap?"#define USE_SPECULARMAP":"",t.specularColorMap?"#define USE_SPECULAR_COLORMAP":"",t.specularIntensityMap?"#define USE_SPECULAR_INTENSITYMAP":"",t.roughnessMap?"#define USE_ROUGHNESSMAP":"",t.metalnessMap?"#define USE_METALNESSMAP":"",t.alphaMap?"#define USE_ALPHAMAP":"",t.alphaTest?"#define USE_ALPHATEST":"",t.alphaHash?"#define USE_ALPHAHASH":"",t.sheen?"#define USE_SHEEN":"",t.sheenColorMap?"#define USE_SHEEN_COLORMAP":"",t.sheenRoughnessMap?"#define USE_SHEEN_ROUGHNESSMAP":"",t.transmission?"#define USE_TRANSMISSION":"",t.transmissionMap?"#define USE_TRANSMISSIONMAP":"",t.thicknessMap?"#define USE_THICKNESSMAP":"",t.vertexTangents&&t.flatShading===!1?"#define USE_TANGENT":"",t.vertexColors||t.instancingColor?"#define USE_COLOR":"",t.vertexAlphas||t.batchingColor?"#define USE_COLOR_ALPHA":"",t.vertexUv1s?"#define USE_UV1":"",t.vertexUv2s?"#define USE_UV2":"",t.vertexUv3s?"#define USE_UV3":"",t.pointsUvs?"#define USE_POINTS_UV":"",t.gradientMap?"#define USE_GRADIENTMAP":"",t.flatShading?"#define FLAT_SHADED":"",t.doubleSided?"#define DOUBLE_SIDED":"",t.flipSided?"#define FLIP_SIDED":"",t.shadowMapEnabled?"#define USE_SHADOWMAP":"",t.shadowMapEnabled?"#define "+l:"",t.premultipliedAlpha?"#define PREMULTIPLIED_ALPHA":"",t.numLightProbes>0?"#define USE_LIGHT_PROBES":"",t.numLightProbeGrids>0?"#define USE_LIGHT_PROBES_GRID":"",t.decodeVideoTexture?"#define DECODE_VIDEO_TEXTURE":"",t.decodeVideoTextureEmissive?"#define DECODE_VIDEO_TEXTURE_EMISSIVE":"",t.logarithmicDepthBuffer?"#define USE_LOGARITHMIC_DEPTH_BUFFER":"",t.reversedDepthBuffer?"#define USE_REVERSED_DEPTH_BUFFER":"","uniform mat4 viewMatrix;","uniform vec3 cameraPosition;","uniform bool isOrthographic;",t.toneMapping!==On?"#define TONE_MAPPING":"",t.toneMapping!==On?je.tonemapping_pars_fragment:"",t.toneMapping!==On?xS("toneMapping",t.toneMapping):"",t.dithering?"#define DITHERING":"",t.opaque?"#define OPAQUE":"",je.colorspace_pars_fragment,gS("linearToOutputTexel",t.outputColorSpace),yS(),t.useDepthPacking?"#define DEPTH_PACKING "+t.depthPacking:"",`
+`].filter(Bl).join(`
+`)),o=xf(o),o=Vg(o,t),o=Gg(o,t),a=xf(a),a=Vg(a,t),a=Gg(a,t),o=Hg(o),a=Hg(a),t.isRawShaderMaterial!==!0&&(y=`#version 300 es
+`,g=[f,"#define attribute in","#define varying out","#define texture2D texture"].join(`
+`)+`
+`+g,m=["#define varying in",t.glslVersion===ru?"":"layout(location = 0) out highp vec4 pc_fragColor;",t.glslVersion===ru?"":"#define gl_FragColor pc_fragColor","#define gl_FragDepthEXT gl_FragDepth","#define texture2D texture","#define textureCube texture","#define texture2DProj textureProj","#define texture2DLodEXT textureLod","#define texture2DProjLodEXT textureProjLod","#define textureCubeLodEXT textureLod","#define texture2DGradEXT textureGrad","#define texture2DProjGradEXT textureProjGrad","#define textureCubeGradEXT textureGrad"].join(`
+`)+`
+`+m);let b=y+g+o,x=y+m+a,T=Bg(i,i.VERTEX_SHADER,b),S=Bg(i,i.FRAGMENT_SHADER,x);i.attachShader(_,T),i.attachShader(_,S),t.index0AttributeName!==void 0?i.bindAttribLocation(_,0,t.index0AttributeName):t.hasPositionAttribute===!0&&i.bindAttribLocation(_,0,"position"),i.linkProgram(_);function w(P){if(r.debug.checkShaderErrors){let F=i.getProgramInfoLog(_)||"",z=i.getShaderInfoLog(T)||"",N=i.getShaderInfoLog(S)||"",B=F.trim(),H=z.trim(),X=N.trim(),ie=!0,q=!0;if(i.getProgramParameter(_,i.LINK_STATUS)===!1)if(ie=!1,typeof r.debug.onShaderError=="function")r.debug.onShaderError(i,_,T,S);else{let Q=kg(i,T,"vertex"),ne=kg(i,S,"fragment");Pe("WebGLProgram: Shader Error "+i.getError()+" - VALIDATE_STATUS "+i.getProgramParameter(_,i.VALIDATE_STATUS)+`
+
+Material Name: `+P.name+`
+Material Type: `+P.type+`
+
+Program Info Log: `+B+`
+`+Q+`
+`+ne)}else B!==""?de("WebGLProgram: Program Info Log:",B):(H===""||X==="")&&(q=!1);q&&(P.diagnostics={runnable:ie,programLog:B,vertexShader:{log:H,prefix:g},fragmentShader:{log:X,prefix:m}})}i.deleteShader(T),i.deleteShader(S),v=new xo(i,_),E=SS(i,_)}let v;this.getUniforms=function(){return v===void 0&&w(this),v};let E;this.getAttributes=function(){return E===void 0&&w(this),E};let I=t.rendererExtensionParallelShaderCompile===!1;return this.isReady=function(){return I===!1&&(I=i.getProgramParameter(_,dS)),I},this.destroy=function(){n.releaseStatesOfProgram(this),i.deleteProgram(_),this.program=void 0},this.type=t.shaderType,this.name=t.shaderName,this.id=fS++,this.cacheKey=e,this.usedTimes=1,this.program=_,this.vertexShader=T,this.fragmentShader=S,this}var BS=0,yf=class{constructor(){this.shaderCache=new Map,this.materialCache=new Map}update(e,t,n){let i=this._getShaderCacheForMaterial(e);return i.has(t)===!1&&(i.add(t),t.usedTimes++),i.has(n)===!1&&(i.add(n),n.usedTimes++),this}remove(e){let t=this.materialCache.get(e);for(let n of t)n.usedTimes--,n.usedTimes===0&&this.shaderCache.delete(n.code);return this.materialCache.delete(e),this}getVertexShaderStage(e){return this._getShaderStage(e.vertexShader)}getFragmentShaderStage(e){return this._getShaderStage(e.fragmentShader)}dispose(){this.shaderCache.clear(),this.materialCache.clear()}_getShaderCacheForMaterial(e){let t=this.materialCache,n=t.get(e);return n===void 0&&(n=new Set,t.set(e,n)),n}_getShaderStage(e){let t=this.shaderCache,n=t.get(e);return n===void 0&&(n=new vf(e),t.set(e,n)),n}},vf=class{constructor(e){this.id=BS++,this.code=e,this.usedTimes=0}};function zS(r){return r===ki||r===uo||r===fo}function kS(r,e,t,n,i,s){let o=new Cs,a=new yf,l=new Set,c=[],h=new Map,u=n.logarithmicDepthBuffer,d=n.precision,f={MeshDepthMaterial:"depth",MeshDistanceMaterial:"distance",MeshNormalMaterial:"normal",MeshBasicMaterial:"basic",MeshLambertMaterial:"lambert",MeshPhongMaterial:"phong",MeshToonMaterial:"toon",MeshStandardMaterial:"physical",MeshPhysicalMaterial:"physical",MeshMatcapMaterial:"matcap",LineBasicMaterial:"basic",LineDashedMaterial:"dashed",PointsMaterial:"points",ShadowMaterial:"shadow",SpriteMaterial:"sprite"};function p(v){return l.add(v),v===0?"uv":`uv${v}`}function _(v,E,I,P,F,z){let N=P.fog,B=F.geometry,H=v.isMeshStandardMaterial||v.isMeshLambertMaterial||v.isMeshPhongMaterial?P.environment:null,X=v.isMeshStandardMaterial||v.isMeshLambertMaterial&&!v.envMap||v.isMeshPhongMaterial&&!v.envMap,ie=e.get(v.envMap||H,X),q=ie&&ie.mapping===Zs?ie.image.height:null,Q=f[v.type];v.precision!==null&&(d=n.getMaxPrecision(v.precision),d!==v.precision&&de("WebGLProgram.getParameters:",v.precision,"not supported, using",d,"instead."));let ne=B.morphAttributes.position||B.morphAttributes.normal||B.morphAttributes.color,Ne=ne!==void 0?ne.length:0,we=0;B.morphAttributes.position!==void 0&&(we=1),B.morphAttributes.normal!==void 0&&(we=2),B.morphAttributes.color!==void 0&&(we=3);let ct,tt,ot,K;if(Q){let Mt=ii[Q];ct=Mt.vertexShader,tt=Mt.fragmentShader}else{ct=v.vertexShader,tt=v.fragmentShader;let Mt=a.getVertexShaderStage(v),dt=a.getFragmentShaderStage(v);a.update(v,Mt,dt),ot=Mt.id,K=dt.id}let ee=r.getRenderTarget(),ve=r.state.buffers.depth.getReversed(),Ge=F.isInstancedMesh===!0,Te=F.isBatchedMesh===!0,We=!!v.map,gt=!!v.matcap,te=!!ie,re=!!v.aoMap,oe=!!v.lightMap,ae=!!v.bumpMap&&v.wireframe===!1,ue=!!v.normalMap,ke=!!v.displacementMap,Be=!!v.emissiveMap,Xe=!!v.metalnessMap,Ye=!!v.roughnessMap,L=v.anisotropy>0,ut=v.clearcoat>0,nt=v.dispersion>0,C=v.retroreflectivity>0,M=v.iridescence>0,O=v.sheen>0,G=v.transmission>0,Y=L&&!!v.anisotropyMap,le=ut&&!!v.clearcoatMap,he=ut&&!!v.clearcoatNormalMap,Z=ut&&!!v.clearcoatRoughnessMap,$=M&&!!v.iridescenceMap,pe=M&&!!v.iridescenceThicknessMap,De=O&&!!v.sheenColorMap,ye=O&&!!v.sheenRoughnessMap,me=!!v.specularMap,Ue=!!v.specularColorMap,Ve=!!v.specularIntensityMap,Ze=G&&!!v.transmissionMap,U=G&&!!v.thicknessMap,ge=!!v.gradientMap,j=!!v.alphaMap,_e=v.alphaTest>0,be=!!v.alphaHash,se=!!v.extensions,Fe=On;v.toneMapped&&(ee===null||ee.isXRRenderTarget===!0)&&(Fe=r.toneMapping);let Ie={shaderID:Q,shaderType:v.type,shaderName:v.name,vertexShader:ct,fragmentShader:tt,defines:v.defines,customVertexShaderID:ot,customFragmentShaderID:K,isRawShaderMaterial:v.isRawShaderMaterial===!0,glslVersion:v.glslVersion,precision:d,batching:Te,batchingColor:Te&&F._colorsTexture!==null,instancing:Ge,instancingColor:Ge&&F.instanceColor!==null,instancingMorph:Ge&&F.morphTexture!==null,outputColorSpace:ee===null?r.outputColorSpace:ee.isXRRenderTarget===!0?ee.texture.colorSpace:Je.workingColorSpace,alphaToCoverage:!!v.alphaToCoverage,map:We,matcap:gt,envMap:te,envMapMode:te&&ie.mapping,envMapCubeUVHeight:q,aoMap:re,lightMap:oe,bumpMap:ae,normalMap:ue,displacementMap:ke,emissiveMap:Be,normalMapObjectSpace:ue&&v.normalMapType===Xd,normalMapTangentSpace:ue&&v.normalMapType===xi,packedNormalMap:ue&&v.normalMapType===xi&&zS(v.normalMap.format),metalnessMap:Xe,roughnessMap:Ye,anisotropy:L,anisotropyMap:Y,clearcoat:ut,clearcoatMap:le,clearcoatNormalMap:he,clearcoatRoughnessMap:Z,dispersion:nt,retroreflection:C,iridescence:M,iridescenceMap:$,iridescenceThicknessMap:pe,sheen:O,sheenColorMap:De,sheenRoughnessMap:ye,specularMap:me,specularColorMap:Ue,specularIntensityMap:Ve,transmission:G,transmissionMap:Ze,thicknessMap:U,gradientMap:ge,opaque:v.transparent===!1&&v.blending===Ys&&v.alphaToCoverage===!1,alphaMap:j,alphaTest:_e,alphaHash:be,combine:v.combine,mapUv:We&&p(v.map.channel),aoMapUv:re&&p(v.aoMap.channel),lightMapUv:oe&&p(v.lightMap.channel),bumpMapUv:ae&&p(v.bumpMap.channel),normalMapUv:ue&&p(v.normalMap.channel),displacementMapUv:ke&&p(v.displacementMap.channel),emissiveMapUv:Be&&p(v.emissiveMap.channel),metalnessMapUv:Xe&&p(v.metalnessMap.channel),roughnessMapUv:Ye&&p(v.roughnessMap.channel),anisotropyMapUv:Y&&p(v.anisotropyMap.channel),clearcoatMapUv:le&&p(v.clearcoatMap.channel),clearcoatNormalMapUv:he&&p(v.clearcoatNormalMap.channel),clearcoatRoughnessMapUv:Z&&p(v.clearcoatRoughnessMap.channel),iridescenceMapUv:$&&p(v.iridescenceMap.channel),iridescenceThicknessMapUv:pe&&p(v.iridescenceThicknessMap.channel),sheenColorMapUv:De&&p(v.sheenColorMap.channel),sheenRoughnessMapUv:ye&&p(v.sheenRoughnessMap.channel),specularMapUv:me&&p(v.specularMap.channel),specularColorMapUv:Ue&&p(v.specularColorMap.channel),specularIntensityMapUv:Ve&&p(v.specularIntensityMap.channel),transmissionMapUv:Ze&&p(v.transmissionMap.channel),thicknessMapUv:U&&p(v.thicknessMap.channel),alphaMapUv:j&&p(v.alphaMap.channel),vertexTangents:!!B.attributes.tangent&&(ue||L),vertexNormals:!!B.attributes.normal,vertexColors:v.vertexColors,vertexAlphas:v.vertexColors===!0&&!!B.attributes.color&&B.attributes.color.itemSize===4,pointsUvs:F.isPoints===!0&&!!B.attributes.uv&&(We||j),fog:!!N,useFog:v.fog===!0,fogExp2:!!N&&N.isFogExp2,flatShading:v.wireframe===!1&&(v.flatShading===!0||B.attributes.normal===void 0&&ue===!1&&(v.isMeshLambertMaterial||v.isMeshPhongMaterial||v.isMeshStandardMaterial||v.isMeshPhysicalMaterial)),sizeAttenuation:v.sizeAttenuation===!0,logarithmicDepthBuffer:u,reversedDepthBuffer:ve,skinning:F.isSkinnedMesh===!0,hasPositionAttribute:B.attributes.position!==void 0,morphTargets:B.morphAttributes.position!==void 0,morphNormals:B.morphAttributes.normal!==void 0,morphColors:B.morphAttributes.color!==void 0,morphTargetsCount:Ne,morphTextureStride:we,numSunLights:E.sun.length,numDirLights:E.directional.length,numPointLights:E.point.length,numSpotLights:E.spot.length,numSpotLightMaps:E.spotLightMap.length,numRectAreaLights:E.rectArea.length,numHemiLights:E.hemi.length,numSunLightShadows:E.sunShadowMap.length,numDirLightShadows:E.directionalShadowMap.length,numPointLightShadows:E.pointShadowMap.length,numSpotLightShadows:E.spotShadowMap.length,numSpotLightShadowsWithMaps:E.numSpotLightShadowsWithMaps,numLightProbes:E.numLightProbes,numLightProbeGrids:z.length,numClippingPlanes:s.numPlanes,numClipIntersection:s.numIntersection,dithering:v.dithering,shadowMapEnabled:r.shadowMap.enabled&&I.length>0,shadowMapType:r.shadowMap.type,toneMapping:Fe,decodeVideoTexture:We&&v.map.isVideoTexture===!0&&Je.getTransfer(v.map.colorSpace)===ht,decodeVideoTextureEmissive:Be&&v.emissiveMap.isVideoTexture===!0&&Je.getTransfer(v.emissiveMap.colorSpace)===ht,premultipliedAlpha:v.premultipliedAlpha,doubleSided:v.side===Rn,flipSided:v.side===qt,useDepthPacking:v.depthPacking>=0,depthPacking:v.depthPacking||0,index0AttributeName:v.index0AttributeName,extensionClipCullDistance:se&&v.extensions.clipCullDistance===!0&&t.has("WEBGL_clip_cull_distance"),extensionMultiDraw:(se&&v.extensions.multiDraw===!0||Te)&&t.has("WEBGL_multi_draw"),rendererExtensionParallelShaderCompile:t.has("KHR_parallel_shader_compile"),customProgramCacheKey:v.customProgramCacheKey()};return Ie.vertexUv1s=l.has(1),Ie.vertexUv2s=l.has(2),Ie.vertexUv3s=l.has(3),l.clear(),Ie}function g(v){let E=[];if(v.shaderID?E.push(v.shaderID):(E.push(v.customVertexShaderID),E.push(v.customFragmentShaderID)),v.defines!==void 0)for(let I in v.defines)E.push(I),E.push(v.defines[I]);return v.isRawShaderMaterial===!1&&(m(E,v),y(E,v),E.push(r.outputColorSpace)),E.push(v.customProgramCacheKey),E.join()}function m(v,E){v.push(E.precision),v.push(E.outputColorSpace),v.push(E.envMapMode),v.push(E.envMapCubeUVHeight),v.push(E.mapUv),v.push(E.alphaMapUv),v.push(E.lightMapUv),v.push(E.aoMapUv),v.push(E.bumpMapUv),v.push(E.normalMapUv),v.push(E.displacementMapUv),v.push(E.emissiveMapUv),v.push(E.metalnessMapUv),v.push(E.roughnessMapUv),v.push(E.anisotropyMapUv),v.push(E.clearcoatMapUv),v.push(E.clearcoatNormalMapUv),v.push(E.clearcoatRoughnessMapUv),v.push(E.iridescenceMapUv),v.push(E.iridescenceThicknessMapUv),v.push(E.sheenColorMapUv),v.push(E.sheenRoughnessMapUv),v.push(E.specularMapUv),v.push(E.specularColorMapUv),v.push(E.specularIntensityMapUv),v.push(E.transmissionMapUv),v.push(E.thicknessMapUv),v.push(E.combine),v.push(E.fogExp2),v.push(E.sizeAttenuation),v.push(E.morphTargetsCount),v.push(E.morphAttributeCount),v.push(E.numSunLights),v.push(E.numDirLights),v.push(E.numPointLights),v.push(E.numSpotLights),v.push(E.numSpotLightMaps),v.push(E.numHemiLights),v.push(E.numRectAreaLights),v.push(E.numSunLightShadows),v.push(E.numDirLightShadows),v.push(E.numPointLightShadows),v.push(E.numSpotLightShadows),v.push(E.numSpotLightShadowsWithMaps),v.push(E.numLightProbes),v.push(E.shadowMapType),v.push(E.toneMapping),v.push(E.numClippingPlanes),v.push(E.numClipIntersection),v.push(E.depthPacking)}function y(v,E){o.disableAll(),E.instancing&&o.enable(0),E.instancingColor&&o.enable(1),E.instancingMorph&&o.enable(2),E.matcap&&o.enable(3),E.envMap&&o.enable(4),E.normalMapObjectSpace&&o.enable(5),E.normalMapTangentSpace&&o.enable(6),E.clearcoat&&o.enable(7),E.iridescence&&o.enable(8),E.alphaTest&&o.enable(9),E.vertexColors&&o.enable(10),E.vertexAlphas&&o.enable(11),E.vertexUv1s&&o.enable(12),E.vertexUv2s&&o.enable(13),E.vertexUv3s&&o.enable(14),E.vertexTangents&&o.enable(15),E.anisotropy&&o.enable(16),E.alphaHash&&o.enable(17),E.batching&&o.enable(18),E.dispersion&&o.enable(19),E.retroreflection&&o.enable(24),E.batchingColor&&o.enable(20),E.gradientMap&&o.enable(21),E.packedNormalMap&&o.enable(22),E.vertexNormals&&o.enable(23),v.push(o.mask),o.disableAll(),E.fog&&o.enable(0),E.useFog&&o.enable(1),E.flatShading&&o.enable(2),E.logarithmicDepthBuffer&&o.enable(3),E.reversedDepthBuffer&&o.enable(4),E.skinning&&o.enable(5),E.morphTargets&&o.enable(6),E.morphNormals&&o.enable(7),E.morphColors&&o.enable(8),E.premultipliedAlpha&&o.enable(9),E.shadowMapEnabled&&o.enable(10),E.doubleSided&&o.enable(11),E.flipSided&&o.enable(12),E.useDepthPacking&&o.enable(13),E.dithering&&o.enable(14),E.transmission&&o.enable(15),E.sheen&&o.enable(16),E.opaque&&o.enable(17),E.pointsUvs&&o.enable(18),E.decodeVideoTexture&&o.enable(19),E.decodeVideoTextureEmissive&&o.enable(20),E.alphaToCoverage&&o.enable(21),E.numLightProbeGrids>0&&o.enable(22),E.hasPositionAttribute&&o.enable(23),v.push(o.mask)}function b(v){let E=f[v.type],I;if(E){let P=ii[E];I=sf.clone(P.uniforms)}else I=v.uniforms;return I}function x(v,E){let I=h.get(E);return I!==void 0?++I.usedTimes:(I=new OS(r,E,v,i),c.push(I),h.set(E,I)),I}function T(v){if(--v.usedTimes===0){let E=c.indexOf(v);c[E]=c[c.length-1],c.pop(),h.delete(v.cacheKey),v.destroy()}}function S(v){a.remove(v)}function w(){a.dispose()}return{getParameters:_,getProgramCacheKey:g,getUniforms:b,acquireProgram:x,releaseProgram:T,releaseShaderCache:S,programs:c,dispose:w}}function VS(){let r=new WeakMap;function e(o){return r.has(o)}function t(o){let a=r.get(o);return a===void 0&&(a={},r.set(o,a)),a}function n(o){r.delete(o)}function i(o,a,l){r.get(o)[a]=l}function s(){r=new WeakMap}return{has:e,get:t,remove:n,update:i,dispose:s}}function GS(r,e){return r.groupOrder!==e.groupOrder?r.groupOrder-e.groupOrder:r.renderOrder!==e.renderOrder?r.renderOrder-e.renderOrder:r.material.id!==e.material.id?r.material.id-e.material.id:r.materialVariant!==e.materialVariant?r.materialVariant-e.materialVariant:r.z!==e.z?r.z-e.z:r.id-e.id}function Xg(r,e){return r.groupOrder!==e.groupOrder?r.groupOrder-e.groupOrder:r.renderOrder!==e.renderOrder?r.renderOrder-e.renderOrder:r.z!==e.z?e.z-r.z:r.id-e.id}function qg(){let r=[],e=0,t=[],n=[],i=[];function s(){e=0,t.length=0,n.length=0,i.length=0}function o(d){let f=0;return d.isInstancedMesh&&(f+=2),d.isSkinnedMesh&&(f+=1),f}function a(d,f,p,_,g,m){let y=r[e];return y===void 0?(y={id:d.id,object:d,geometry:f,material:p,materialVariant:o(d),groupOrder:_,renderOrder:d.renderOrder,z:g,group:m},r[e]=y):(y.id=d.id,y.object=d,y.geometry=f,y.material=p,y.materialVariant=o(d),y.groupOrder=_,y.renderOrder=d.renderOrder,y.z=g,y.group=m),e++,y}function l(d,f,p,_,g,m,y){y.reversedDepth===!0&&(g=-g);let b=a(d,f,p,_,g,m);p.transmission>0?n.push(b):p.transparent===!0?i.push(b):t.push(b)}function c(d,f,p,_,g,m){let y=a(d,f,p,_,g,m);p.transmission>0?n.unshift(y):p.transparent===!0?i.unshift(y):t.unshift(y)}function h(d,f){t.length>1&&t.sort(d||GS),n.length>1&&n.sort(f||Xg),i.length>1&&i.sort(f||Xg)}function u(){for(let d=e,f=r.length;d<f;d++){let p=r[d];if(p.id===null)break;p.id=null,p.object=null,p.geometry=null,p.material=null,p.group=null}}return{opaque:t,transmissive:n,transparent:i,init:s,push:l,unshift:c,finish:u,sort:h}}function HS(){let r=new WeakMap;function e(n,i){let s=r.get(n),o;return s===void 0?(o=new qg,r.set(n,[o])):i>=s.length?(o=new qg,s.push(o)):o=s[i],o}function t(){r=new WeakMap}return{get:e,dispose:t}}function WS(){let r={};return{get:function(e){if(r[e.id]!==void 0)return r[e.id];let t;switch(e.type){case"SunLight":case"DirectionalLight":t={direction:new R,color:new ce};break;case"SpotLight":t={position:new R,direction:new R,color:new ce,distance:0,coneCos:0,penumbraCos:0,decay:0};break;case"PointLight":t={position:new R,color:new ce,distance:0,decay:0};break;case"HemisphereLight":t={direction:new R,skyColor:new ce,groundColor:new ce};break;case"RectAreaLight":t={color:new ce,position:new R,halfWidth:new R,halfHeight:new R};break}return r[e.id]=t,t}}}function XS(){let r={};return{get:function(e){if(r[e.id]!==void 0)return r[e.id];let t;switch(e.type){case"SunLight":case"DirectionalLight":t={shadowIntensity:1,shadowBias:0,shadowNormalBias:0,shadowRadius:1,shadowMapSize:new J};break;case"SpotLight":t={shadowIntensity:1,shadowBias:0,shadowNormalBias:0,shadowRadius:1,shadowMapSize:new J};break;case"PointLight":t={shadowIntensity:1,shadowBias:0,shadowNormalBias:0,shadowRadius:1,shadowMapSize:new J,shadowCameraNear:1,shadowCameraFar:1e3};break}return r[e.id]=t,t}}}var qS=0;function YS(r,e){return(e.castShadow?2:0)-(r.castShadow?2:0)+(e.map?1:0)-(r.map?1:0)}function ZS(r){let e=new WS,t=XS(),n={version:0,hash:{sunLength:-1,directionalLength:-1,pointLength:-1,spotLength:-1,rectAreaLength:-1,hemiLength:-1,numSunShadows:-1,numDirectionalShadows:-1,numPointShadows:-1,numSpotShadows:-1,numSpotMaps:-1,numLightProbes:-1},ambient:[0,0,0],probe:[],sun:[],sunShadow:[],sunShadowMap:[],sunShadowMatrix:[],sunShadowCascade:[],directional:[],directionalShadow:[],directionalShadowMap:[],directionalShadowMatrix:[],spot:[],spotLightMap:[],spotShadow:[],spotShadowMap:[],spotLightMatrix:[],rectArea:[],rectAreaLTC1:null,rectAreaLTC2:null,point:[],pointShadow:[],pointShadowMap:[],pointShadowMatrix:[],hemi:[],numSpotLightShadowsWithMaps:0,numLightProbes:0};for(let c=0;c<9;c++)n.probe.push(new R);let i=new R,s=new ze,o=new ze;function a(c){let h=0,u=0,d=0;for(let F=0;F<9;F++)n.probe[F].set(0,0,0);let f=0,p=0,_=0,g=0,m=0,y=0,b=0,x=0,T=0,S=0,w=0,v=0,E=0,I=0;c.sort(YS);for(let F=0,z=c.length;F<z;F++){let N=c[F],B=N.color,H=N.intensity,X=N.distance,ie=null;if(N.shadow&&N.shadow.map&&(N.shadow.map.texture.format===ki?ie=N.shadow.map.texture:ie=N.shadow.map.depthTexture||N.shadow.map.texture),N.isAmbientLight)h+=B.r*H,u+=B.g*H,d+=B.b*H;else if(N.isLightProbe){for(let q=0;q<9;q++)n.probe[q].addScaledVector(N.sh.coefficients[q],H);I++}else if(N.isSunLight){let q=e.get(N);if(q.color.copy(N.color).multiplyScalar(N.intensity),N.castShadow){let Q=N.shadow,ne=t.get(N);ne.shadowIntensity=Q.intensity,ne.shadowBias=Q.bias,ne.shadowNormalBias=Q.normalBias,ne.shadowRadius=Q.radius,ne.shadowMapSize.copy(Q.mapSize).multiply(Q.getFrameExtents()),n.sunShadow[p]=ne,n.sunShadowMap[p]=ie;let Ne=Q.getViewportCount();for(let we=0;we<Ne;we++)n.sunShadowMatrix[_+we]=Q.getMatrix(we),n.sunShadowCascade[_+we]=Q._cascadeData[we];_+=Ne,p++}n.sun[f]=q,f++}else if(N.isDirectionalLight){let q=e.get(N);if(q.color.copy(N.color).multiplyScalar(N.intensity),N.castShadow){let Q=N.shadow,ne=t.get(N);ne.shadowIntensity=Q.intensity,ne.shadowBias=Q.bias,ne.shadowNormalBias=Q.normalBias,ne.shadowRadius=Q.radius,ne.shadowMapSize=Q.mapSize,n.directionalShadow[g]=ne,n.directionalShadowMap[g]=ie,n.directionalShadowMatrix[g]=N.shadow.matrix,T++}n.directional[g]=q,g++}else if(N.isSpotLight){let q=e.get(N);q.position.setFromMatrixPosition(N.matrixWorld),q.color.copy(B).multiplyScalar(H),q.distance=X,q.coneCos=Math.cos(N.angle),q.penumbraCos=Math.cos(N.angle*(1-N.penumbra)),q.decay=N.decay,n.spot[y]=q;let Q=N.shadow;if(N.map&&(n.spotLightMap[v]=N.map,v++,Q.updateMatrices(N),N.castShadow&&E++),n.spotLightMatrix[y]=Q.matrix,N.castShadow){let ne=t.get(N);ne.shadowIntensity=Q.intensity,ne.shadowBias=Q.bias,ne.shadowNormalBias=Q.normalBias,ne.shadowRadius=Q.radius,ne.shadowMapSize=Q.mapSize,n.spotShadow[y]=ne,n.spotShadowMap[y]=ie,w++}y++}else if(N.isRectAreaLight){let q=e.get(N);q.color.copy(B).multiplyScalar(H),q.halfWidth.set(N.width*.5,0,0),q.halfHeight.set(0,N.height*.5,0),n.rectArea[b]=q,b++}else if(N.isPointLight){let q=e.get(N);if(q.color.copy(N.color).multiplyScalar(N.intensity),q.distance=N.distance,q.decay=N.decay,N.castShadow){let Q=N.shadow,ne=t.get(N);ne.shadowIntensity=Q.intensity,ne.shadowBias=Q.bias,ne.shadowNormalBias=Q.normalBias,ne.shadowRadius=Q.radius,ne.shadowMapSize=Q.mapSize,ne.shadowCameraNear=Q.camera.near,ne.shadowCameraFar=Q.camera.far,n.pointShadow[m]=ne,n.pointShadowMap[m]=ie,n.pointShadowMatrix[m]=N.shadow.matrix,S++}n.point[m]=q,m++}else if(N.isHemisphereLight){let q=e.get(N);q.skyColor.copy(N.color).multiplyScalar(H),q.groundColor.copy(N.groundColor).multiplyScalar(H),n.hemi[x]=q,x++}}b>0&&(r.has("OES_texture_float_linear")===!0?(n.rectAreaLTC1=xe.LTC_FLOAT_1,n.rectAreaLTC2=xe.LTC_FLOAT_2):(n.rectAreaLTC1=xe.LTC_HALF_1,n.rectAreaLTC2=xe.LTC_HALF_2)),n.ambient[0]=h,n.ambient[1]=u,n.ambient[2]=d;let P=n.hash;(P.sunLength!==f||P.directionalLength!==g||P.pointLength!==m||P.spotLength!==y||P.rectAreaLength!==b||P.hemiLength!==x||P.numSunShadows!==p||P.numDirectionalShadows!==T||P.numPointShadows!==S||P.numSpotShadows!==w||P.numSpotMaps!==v||P.numLightProbes!==I)&&(n.sun.length=f,n.directional.length=g,n.spot.length=y,n.rectArea.length=b,n.point.length=m,n.hemi.length=x,n.sunShadow.length=p,n.sunShadowMap.length=p,n.sunShadowMatrix.length=_,n.sunShadowCascade.length=_,n.directionalShadow.length=T,n.directionalShadowMap.length=T,n.directionalShadowMatrix.length=T,n.pointShadow.length=S,n.pointShadowMap.length=S,n.pointShadowMatrix.length=S,n.spotShadow.length=w,n.spotShadowMap.length=w,n.spotLightMatrix.length=w+v-E,n.spotLightMap.length=v,n.numSpotLightShadowsWithMaps=E,n.numLightProbes=I,P.sunLength=f,P.directionalLength=g,P.pointLength=m,P.spotLength=y,P.rectAreaLength=b,P.hemiLength=x,P.numSunShadows=p,P.numDirectionalShadows=T,P.numPointShadows=S,P.numSpotShadows=w,P.numSpotMaps=v,P.numLightProbes=I,n.version=qS++)}function l(c,h){let u=0,d=0,f=0,p=0,_=0,g=0,m=h.matrixWorldInverse;for(let y=0,b=c.length;y<b;y++){let x=c[y];if(x.isSunLight){let T=n.sun[u];T.direction.setFromMatrixPosition(x.matrixWorld),T.direction.transformDirection(m),u++}else if(x.isDirectionalLight){let T=n.directional[d];T.direction.setFromMatrixPosition(x.matrixWorld),i.setFromMatrixPosition(x.target.matrixWorld),T.direction.sub(i),T.direction.transformDirection(m),d++}else if(x.isSpotLight){let T=n.spot[p];T.position.setFromMatrixPosition(x.matrixWorld),T.position.applyMatrix4(m),T.direction.setFromMatrixPosition(x.matrixWorld),i.setFromMatrixPosition(x.target.matrixWorld),T.direction.sub(i),T.direction.transformDirection(m),p++}else if(x.isRectAreaLight){let T=n.rectArea[_];T.position.setFromMatrixPosition(x.matrixWorld),T.position.applyMatrix4(m),o.identity(),s.copy(x.matrixWorld),s.premultiply(m),o.extractRotation(s),T.halfWidth.set(x.width*.5,0,0),T.halfHeight.set(0,x.height*.5,0),T.halfWidth.applyMatrix4(o),T.halfHeight.applyMatrix4(o),_++}else if(x.isPointLight){let T=n.point[f];T.position.setFromMatrixPosition(x.matrixWorld),T.position.applyMatrix4(m),f++}else if(x.isHemisphereLight){let T=n.hemi[g];T.direction.setFromMatrixPosition(x.matrixWorld),T.direction.transformDirection(m),g++}}}return{setup:a,setupView:l,state:n}}function Yg(r){let e=new ZS(r),t=[],n=[],i=[];function s(d){u.camera=d,t.length=0,n.length=0,i.length=0}function o(d){t.push(d)}function a(d){n.push(d)}function l(d){i.push(d)}function c(){e.setup(t)}function h(d){e.setupView(t,d)}let u={lightsArray:t,shadowsArray:n,lightProbeGridArray:i,camera:null,lights:e,transmissionRenderTarget:{},textureUnits:0};return{init:s,state:u,setupLights:c,setupLightsView:h,pushLight:o,pushShadow:a,pushLightProbeGrid:l}}function KS(r){let e=new WeakMap;function t(i,s=0){let o=e.get(i),a;return o===void 0?(a=new Yg(r),e.set(i,[a])):s>=o.length?(a=new Yg(r),o.push(a)):a=o[s],a}function n(){e=new WeakMap}return{get:t,dispose:n}}var JS=`void main() {
+	gl_Position = vec4( position, 1.0 );
+}`,jS=`uniform sampler2D shadow_pass;
+uniform vec2 resolution;
+uniform float radius;
+void main() {
+	const float samples = float( VSM_SAMPLES );
+	float mean = 0.0;
+	float squared_mean = 0.0;
+	float uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );
+	float uvStart = samples <= 1.0 ? 0.0 : - 1.0;
+	for ( float i = 0.0; i < samples; i ++ ) {
+		float uvOffset = uvStart + i * uvStride;
+		#ifdef HORIZONTAL_PASS
+			vec2 distribution = texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ).rg;
+			mean += distribution.x;
+			squared_mean += distribution.y * distribution.y + distribution.x * distribution.x;
+		#else
+			float depth = texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ).r;
+			mean += depth;
+			squared_mean += depth * depth;
+		#endif
+	}
+	mean = mean / samples;
+	squared_mean = squared_mean / samples;
+	float std_dev = sqrt( max( 0.0, squared_mean - mean * mean ) );
+	gl_FragColor = vec4( mean, std_dev, 0.0, 1.0 );
+}`,$S=[new R(1,0,0),new R(-1,0,0),new R(0,1,0),new R(0,-1,0),new R(0,0,1),new R(0,0,-1)],QS=[new R(0,-1,0),new R(0,-1,0),new R(0,0,1),new R(0,0,-1),new R(0,-1,0),new R(0,-1,0)],Zg=new ze,Ol=new R,ff=new R;function eb(r,e,t){let n=new hi,i=new J,s=new J,o=new mt,a=new Xr,l=new qr,c={},h=t.maxTextureSize,u={[ei]:qt,[qt]:ei,[Rn]:Rn},d=new un({defines:{VSM_SAMPLES:8},uniforms:{shadow_pass:{value:null},resolution:{value:new J},radius:{value:4}},vertexShader:JS,fragmentShader:jS}),f=d.clone();f.defines.HORIZONTAL_PASS=1;let p=new Oe;p.setAttribute("position",new Qe(new Float32Array([-1,-1,.5,3,-1,.5,-1,3,.5]),3));let _=new rt(p,d),g=this;this.enabled=!1,this.autoUpdate=!0,this.needsUpdate=!1,this.type=to;let m=this.type;this.render=function(S,w,v){if(g.enabled===!1||g.autoUpdate===!1&&g.needsUpdate===!1||S.length===0)return;this.type===yd&&(de("WebGLShadowMap: PCFSoftShadowMap has been removed. Using PCFShadowMap instead."),this.type=to);let E=r.getRenderTarget(),I=r.getActiveCubeFace(),P=r.getActiveMipmapLevel(),F=r.state;F.setBlending(ti),F.buffers.depth.getReversed()===!0?F.buffers.color.setClear(0,0,0,0):F.buffers.color.setClear(1,1,1,1),F.buffers.depth.setTest(!0),F.setScissorTest(!1);let z=m!==this.type;z&&w.traverse(function(N){N.material&&(Array.isArray(N.material)?N.material.forEach(B=>B.needsUpdate=!0):N.material.needsUpdate=!0)});for(let N=0,B=S.length;N<B;N++){let H=S[N],X=H.shadow;if(X===void 0){de("WebGLShadowMap:",H,"has no shadow.");continue}if(X.autoUpdate===!1&&X.needsUpdate===!1)continue;i.copy(X.mapSize);let ie=X.getFrameExtents();i.multiply(ie),s.copy(X.mapSize),(i.x>h||i.y>h)&&(i.x>h&&(s.x=Math.floor(h/ie.x),i.x=s.x*ie.x,X.mapSize.x=s.x),i.y>h&&(s.y=Math.floor(h/ie.y),i.y=s.y*ie.y,X.mapSize.y=s.y));let q=r.state.buffers.depth.getReversed();if(X.camera._reversedDepth=q,X.map===null||z===!0){if(X.map!==null&&(X.map.depthTexture!==null&&(X.map.depthTexture.dispose(),X.map.depthTexture=null),X.map.dispose()),this.type===qs){if(H.isPointLight){de("WebGLShadowMap: VSM shadow maps are not supported for PointLights. 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Q=X.map.isWebGLCubeRenderTarget?6:X.getViewportCount();H.isPointLight!==!0&&X.updateMatrices(H,v);for(let ne=0;ne<Q;ne++){let Ne=X.getCamera(ne);if(H.isPointLight){let we=X.camera,ct=X.matrix,tt=H.distance||we.far;tt!==we.far&&(we.far=tt,we.updateProjectionMatrix()),Ol.setFromMatrixPosition(H.matrixWorld),we.position.copy(Ol),ff.copy(we.position),ff.add($S[ne]),we.up.copy(QS[ne]),we.lookAt(ff),we.updateMatrixWorld(),ct.makeTranslation(-Ol.x,-Ol.y,-Ol.z),Zg.multiplyMatrices(we.projectionMatrix,we.matrixWorldInverse),X._frustum.setFromProjectionMatrix(Zg,we.coordinateSystem,we.reversedDepth)}if(X.map.isWebGLCubeRenderTarget)r.setRenderTarget(X.map,ne),r.clear();else{ne===0&&(r.setRenderTarget(X.map),r.clear());let we=X.getViewport(ne);o.set(s.x*we.x,s.y*we.y,s.x*we.z,s.y*we.w),F.viewport(o)}n=X.getFrustum(ne),x(w,v,Ne,H,this.type)}X.isPointLightShadow!==!0&&this.type===qs&&y(X,v),X.needsUpdate=!1}m=this.type,g.needsUpdate=!1,r.setRenderTarget(E,I,P)};function y(S,w){let 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De=n.get(M[pe]).__webglTexture;t.bindFramebuffer(r.FRAMEBUFFER,he.__webglFramebuffer),r.framebufferTexture2D(r.DRAW_FRAMEBUFFER,r.COLOR_ATTACHMENT0+pe,r.TEXTURE_2D,De,0)}t.bindFramebuffer(r.DRAW_FRAMEBUFFER,he.__webglMultisampledFramebuffer)}else if(C.depthBuffer&&C.storeMultisampledDepthBuffer===!1&&l){let M=C.stencilBuffer?r.DEPTH_STENCIL_ATTACHMENT:r.DEPTH_ATTACHMENT;r.invalidateFramebuffer(r.DRAW_FRAMEBUFFER,[M])}}}function Xe(C){return Math.min(i.maxSamples,C.samples)}function Ye(C){let M=n.get(C);return C.samples>0&&e.has("WEBGL_multisampled_render_to_texture")===!0&&M.__useRenderToTexture!==!1}function L(C){let M=o.render.frame;h.get(C)!==M&&(h.set(C,M),C.update())}function ut(C,M){let O=C.colorSpace,G=C.format,Y=C.type;return C.isCompressedTexture===!0||C.isVideoTexture===!0||O!==nn&&O!==yi&&(Je.getTransfer(O)===ht?(G!==tn||Y!==fn)&&de("WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType."):Pe("WebGLTextures: Unsupported texture color 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s.COMPRESSED_RGB_S3TC_DXT1_EXT;if(n===lo)return s.COMPRESSED_RGBA_S3TC_DXT1_EXT;if(n===co)return s.COMPRESSED_RGBA_S3TC_DXT3_EXT;if(n===ho)return s.COMPRESSED_RGBA_S3TC_DXT5_EXT}else return null;if(n===nl||n===il||n===sl||n===rl)if(s=e.get("WEBGL_compressed_texture_pvrtc"),s!==null){if(n===nl)return s.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;if(n===il)return s.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;if(n===sl)return s.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;if(n===rl)return s.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG}else return null;if(n===ol||n===al||n===ll||n===cl||n===hl||n===uo||n===ul)if(s=e.get("WEBGL_compressed_texture_etc"),s!==null){if(n===ol||n===al)return o===ht?s.COMPRESSED_SRGB8_ETC2:s.COMPRESSED_RGB8_ETC2;if(n===ll)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:s.COMPRESSED_RGBA8_ETC2_EAC;if(n===cl)return s.COMPRESSED_R11_EAC;if(n===hl)return s.COMPRESSED_SIGNED_R11_EAC;if(n===uo)return s.COMPRESSED_RG11_EAC;if(n===ul)return s.COMPRESSED_SIGNED_RG11_EAC}else return null;if(n===dl||n===fl||n===pl||n===ml||n===gl||n===_l||n===xl||n===yl||n===vl||n===Ml||n===Sl||n===bl||n===Tl||n===Al)if(s=e.get("WEBGL_compressed_texture_astc"),s!==null){if(n===dl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:s.COMPRESSED_RGBA_ASTC_4x4_KHR;if(n===fl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:s.COMPRESSED_RGBA_ASTC_5x4_KHR;if(n===pl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:s.COMPRESSED_RGBA_ASTC_5x5_KHR;if(n===ml)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:s.COMPRESSED_RGBA_ASTC_6x5_KHR;if(n===gl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:s.COMPRESSED_RGBA_ASTC_6x6_KHR;if(n===_l)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:s.COMPRESSED_RGBA_ASTC_8x5_KHR;if(n===xl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:s.COMPRESSED_RGBA_ASTC_8x6_KHR;if(n===yl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:s.COMPRESSED_RGBA_ASTC_8x8_KHR;if(n===vl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:s.COMPRESSED_RGBA_ASTC_10x5_KHR;if(n===Ml)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:s.COMPRESSED_RGBA_ASTC_10x6_KHR;if(n===Sl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:s.COMPRESSED_RGBA_ASTC_10x8_KHR;if(n===bl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:s.COMPRESSED_RGBA_ASTC_10x10_KHR;if(n===Tl)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:s.COMPRESSED_RGBA_ASTC_12x10_KHR;if(n===Al)return o===ht?s.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:s.COMPRESSED_RGBA_ASTC_12x12_KHR}else return null;if(n===El||n===wl||n===Rl)if(s=e.get("EXT_texture_compression_bptc"),s!==null){if(n===El)return o===ht?s.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT:s.COMPRESSED_RGBA_BPTC_UNORM_EXT;if(n===wl)return s.COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT;if(n===Rl)return s.COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT}else return null;if(n===Cl||n===Il||n===fo||n===Pl)if(s=e.get("EXT_texture_compression_rgtc"),s!==null){if(n===Cl)return s.COMPRESSED_RED_RGTC1_EXT;if(n===Il)return s.COMPRESSED_SIGNED_RED_RGTC1_EXT;if(n===fo)return s.COMPRESSED_RED_GREEN_RGTC2_EXT;if(n===Pl)return s.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT}else return null;return n===Js?r.UNSIGNED_INT_24_8:r[n]!==void 0?r[n]:null}return{convert:t}}var ib=`
+void main() {
+
+	gl_Position = vec4( position, 1.0 );
+
+}`,sb=`
+uniform sampler2DArray depthColor;
+uniform float depthWidth;
+uniform float depthHeight;
+
+void main() {
+
+	vec2 coord = vec2( gl_FragCoord.x / depthWidth, gl_FragCoord.y / depthHeight );
+
+	if ( coord.x >= 1.0 ) {
+
+		gl_FragDepth = texture( depthColor, vec3( coord.x - 1.0, coord.y, 1 ) ).r;
+
+	} else {
+
+		gl_FragDepth = texture( depthColor, vec3( coord.x, coord.y, 0 ) ).r;
+
+	}
+
+}`,Mf=class{constructor(){this.texture=null,this.mesh=null,this.depthNear=0,this.depthFar=0}init(e,t){if(this.texture===null){let n=new Nr(e.texture);(e.depthNear!==t.depthNear||e.depthFar!==t.depthFar)&&(this.depthNear=e.depthNear,this.depthFar=e.depthFar),this.texture=n}}getMesh(e){if(this.texture!==null&&this.mesh===null){let t=e.cameras[0].viewport,n=new un({vertexShader:ib,fragmentShader:sb,uniforms:{depthColor:{value:this.texture},depthWidth:{value:t.z},depthHeight:{value:t.w}}});this.mesh=new rt(new Bs(20,20),n)}return this.mesh}reset(){this.texture=null,this.mesh=null}getDepthTexture(){return this.texture}},Sf=class extends xn{constructor(e,t){super();let n=this,i=null,s=1,o=null,a="local-floor",l=1,c=null,h=null,u=null,d=null,f=null,p=null,_=typeof XRWebGLBinding<"u",g=new Mf,m={},y=t.getContextAttributes(),b=null,x=null,T=[],S=[],w=new J,v=null,E=null,I=new Lt;I.viewport=new mt;let P=new Lt;P.viewport=new mt;let F=[I,P],z=new Ha,N=null,B=null;this.cameraAutoUpdate=!0,this.enabled=!1,this.isPresenting=!1,this.getController=function(K){let ee=T[K];return ee===void 0&&(ee=new Is,T[K]=ee),ee.getTargetRaySpace()},this.getControllerGrip=function(K){let ee=T[K];return ee===void 0&&(ee=new Is,T[K]=ee),ee.getGripSpace()},this.getHand=function(K){let ee=T[K];return ee===void 0&&(ee=new Is,T[K]=ee),ee.getHandSpace()};function H(K){let ee=S.indexOf(K.inputSource);if(ee===-1)return;let ve=T[ee];ve!==void 0&&(ve.update(K.inputSource,K.frame,c||o),ve.dispatchEvent({type:K.type,data:K.inputSource}))}function X(){i.removeEventListener("select",H),i.removeEventListener("selectstart",H),i.removeEventListener("selectend",H),i.removeEventListener("squeeze",H),i.removeEventListener("squeezestart",H),i.removeEventListener("squeezeend",H),i.removeEventListener("end",X),i.removeEventListener("inputsourceschange",ie);for(let K=0;K<T.length;K++){let ee=S[K];ee!==null&&(S[K]=null,T[K].disconnect(ee))}N=null,B=null,g.reset();for(let K in m)delete m[K];if(e.setRenderTarget(b),f=null,d=null,u=null,i=null,x=null,ot.stop(),n.isPresenting=!1,e.setPixelRatio(v),e.setSize(w.width,w.height,!1),E!==null){let K=E.camera;K.fov=E.fov,K.zoom=E.zoom,K.updateProjectionMatrix(),E=null}n.dispatchEvent({type:"sessionend"})}this.setFramebufferScaleFactor=function(K){s=K,n.isPresenting===!0&&de("WebXRManager: Cannot change framebuffer scale while presenting.")},this.setReferenceSpaceType=function(K){a=K,n.isPresenting===!0&&de("WebXRManager: Cannot change reference space type while presenting.")},this.getReferenceSpace=function(){return c||o},this.setReferenceSpace=function(K){c=K},this.getBaseLayer=function(){return d!==null?d:f},this.getBinding=function(){return u===null&&_&&(u=new XRWebGLBinding(i,t)),u},this.getFrame=function(){return p},this.getSession=function(){return i},this.setSession=async function(K){if(i=K,i!==null){if(b=e.getRenderTarget(),i.addEventListener("select",H),i.addEventListener("selectstart",H),i.addEventListener("selectend",H),i.addEventListener("squeeze",H),i.addEventListener("squeezestart",H),i.addEventListener("squeezeend",H),i.addEventListener("end",X),i.addEventListener("inputsourceschange",ie),y.xrCompatible!==!0&&await t.makeXRCompatible(),v=e.getPixelRatio(),e.getSize(w),_&&"createProjectionLayer"in XRWebGLBinding.prototype){let ve=null,Ge=null,Te=null;y.depth&&(Te=y.stencil?t.DEPTH24_STENCIL8:t.DEPTH_COMPONENT24,ve=y.stencil?zi:Zn,Ge=y.stencil?Js:Cn);let We={colorFormat:t.RGBA8,depthFormat:Te,scaleFactor:s};u=this.getBinding(),d=u.createProjectionLayer(We),i.updateRenderState({layers:[d]}),e.setPixelRatio(1),e.setSize(d.textureWidth,d.textureHeight,!1),x=new Zt(d.textureWidth,d.textureHeight,{format:tn,type:fn,depthTexture:new Pi(d.textureWidth,d.textureHeight,Ge,void 0,void 0,void 0,void 0,void 0,void 0,ve),stencilBuffer:y.stencil,colorSpace:e.outputColorSpace,samples:y.antialias?4:0,resolveDepthBuffer:d.ignoreDepthValues===!1,resolveStencilBuffer:d.ignoreDepthValues===!1,storeMultisampledDepthBuffer:d.ignoreDepthValues===!1,storeMultisampledStencilBuffer:d.ignoreDepthValues===!1})}else{let ve={antialias:y.antialias,alpha:!0,depth:y.depth,stencil:y.stencil,framebufferScaleFactor:s};f=new XRWebGLLayer(i,t,ve),i.updateRenderState({baseLayer:f}),e.setPixelRatio(1),e.setSize(f.framebufferWidth,f.framebufferHeight,!1),x=new Zt(f.framebufferWidth,f.framebufferHeight,{format:tn,type:fn,colorSpace:e.outputColorSpace,stencilBuffer:y.stencil,resolveDepthBuffer:f.ignoreDepthValues===!1,resolveStencilBuffer:f.ignoreDepthValues===!1,storeMultisampledDepthBuffer:f.ignoreDepthValues===!1,storeMultisampledStencilBuffer:f.ignoreDepthValues===!1})}x.isXRRenderTarget=!0,this.setFoveation(l),c=null,o=await i.requestReferenceSpace(a),ot.setContext(i),ot.start(),n.isPresenting=!0,n.dispatchEvent({type:"sessionstart"})}},this.getEnvironmentBlendMode=function(){if(i!==null)return i.environmentBlendMode},this.getDepthTexture=function(){return g.getDepthTexture()};function ie(K){for(let ee=0;ee<K.removed.length;ee++){let ve=K.removed[ee],Ge=S.indexOf(ve);Ge>=0&&(S[Ge]=null,T[Ge].disconnect(ve))}for(let ee=0;ee<K.added.length;ee++){let ve=K.added[ee],Ge=S.indexOf(ve);if(Ge===-1){for(let We=0;We<T.length;We++)if(We>=S.length){S.push(ve),Ge=We;break}else if(S[We]===null){S[We]=ve,Ge=We;break}if(Ge===-1)break}let Te=T[Ge];Te&&Te.connect(ve)}}let q=new R,Q=new R;function ne(K,ee,ve){q.setFromMatrixPosition(ee.matrixWorld),Q.setFromMatrixPosition(ve.matrixWorld);let Ge=q.distanceTo(Q),Te=ee.projectionMatrix.elements,We=ve.projectionMatrix.elements,gt=Te[14]/(Te[10]-1),te=Te[14]/(Te[10]+1),re=(Te[9]+1)/Te[5],oe=(Te[9]-1)/Te[5],ae=(Te[8]-1)/Te[0],ue=(We[8]+1)/We[0],ke=gt*ae,Be=gt*ue,Xe=Ge/(-ae+ue),Ye=Xe*-ae;if(ee.matrixWorld.decompose(K.position,K.quaternion,K.scale),K.translateX(Ye),K.translateZ(Xe),K.matrixWorld.compose(K.position,K.quaternion,K.scale),K.matrixWorldInverse.copy(K.matrixWorld).invert(),Te[10]===-1)K.projectionMatrix.copy(ee.projectionMatrix),K.projectionMatrixInverse.copy(ee.projectionMatrixInverse);else{let L=gt+Xe,ut=te+Xe,nt=ke-Ye,C=Be+(Ge-Ye),M=re*te/ut*L,O=oe*te/ut*L;K.projectionMatrix.makePerspective(nt,C,M,O,L,ut),K.projectionMatrixInverse.copy(K.projectionMatrix).invert()}}function Ne(K,ee){ee===null?K.matrixWorld.copy(K.matrix):K.matrixWorld.multiplyMatrices(ee.matrixWorld,K.matrix),K.matrixWorldInverse.copy(K.matrixWorld).invert()}this.updateCamera=function(K){if(i===null)return;let ee=K.near,ve=K.far;g.texture!==null&&(g.depthNear>0&&(ee=g.depthNear),g.depthFar>0&&(ve=g.depthFar)),z.near=P.near=I.near=ee,z.far=P.far=I.far=ve,(N!==z.near||B!==z.far)&&(i.updateRenderState({depthNear:z.near,depthFar:z.far}),N=z.near,B=z.far),z.layers.mask=K.layers.mask|6,I.layers.mask=z.layers.mask&-5,P.layers.mask=z.layers.mask&-3;let Ge=K.parent,Te=z.cameras;Ne(z,Ge);for(let We=0;We<Te.length;We++)Ne(Te[We],Ge);Te.length===2?ne(z,I,P):z.projectionMatrix.copy(I.projectionMatrix),E===null&&K.isPerspectiveCamera&&(E={camera:K,fov:K.fov,zoom:K.zoom}),we(K,z,Ge)};function we(K,ee,ve){ve===null?K.matrix.copy(ee.matrixWorld):(K.matrix.copy(ve.matrixWorld),K.matrix.invert(),K.matrix.multiply(ee.matrixWorld)),K.matrix.decompose(K.position,K.quaternion,K.scale),K.updateMatrixWorld(!0),K.projectionMatrix.copy(ee.projectionMatrix),K.projectionMatrixInverse.copy(ee.projectionMatrixInverse),K.isPerspectiveCamera&&(K.fov=Es*2*Math.atan(1/K.projectionMatrix.elements[5]),K.zoom=1)}this.getCamera=function(){return z},this.getFoveation=function(){if(!(d===null&&f===null))return l},this.setFoveation=function(K){l=K,d!==null&&(d.fixedFoveation=K),f!==null&&f.fixedFoveation!==void 0&&(f.fixedFoveation=K)},this.hasDepthSensing=function(){return g.texture!==null},this.getDepthSensingMesh=function(){return g.getMesh(z)},this.getCameraTexture=function(K){return m[K]};let ct=null;function tt(K,ee){if(h=ee.getViewerPose(c||o),p=ee,h!==null){let ve=h.views;f!==null&&(e.setRenderTargetFramebuffer(x,f.framebuffer),e.setRenderTarget(x));let Ge=!1;ve.length!==z.cameras.length&&(z.cameras.length=0,Ge=!0);for(let te=0;te<ve.length;te++){let re=ve[te],oe=null;if(f!==null)oe=f.getViewport(re);else{let ue=u.getViewSubImage(d,re);oe=ue.viewport,te===0&&(e.setRenderTargetTextures(x,ue.colorTexture,ue.depthStencilTexture),e.setRenderTarget(x))}let ae=F[te];ae===void 0&&(ae=new Lt,ae.layers.enable(te),ae.viewport=new mt,F[te]=ae),ae.matrix.fromArray(re.transform.matrix),ae.matrix.decompose(ae.position,ae.quaternion,ae.scale),ae.projectionMatrix.fromArray(re.projectionMatrix),ae.projectionMatrixInverse.copy(ae.projectionMatrix).invert(),ae.viewport.set(oe.x,oe.y,oe.width,oe.height),te===0&&(z.matrix.copy(ae.matrix),z.matrix.decompose(z.position,z.quaternion,z.scale)),Ge===!0&&z.cameras.push(ae)}let Te=i.enabledFeatures;if(Te&&Te.includes("depth-sensing")&&i.depthUsage=="gpu-optimized"&&_){u=n.getBinding();let te=u.getDepthInformation(ve[0]);te&&te.isValid&&te.texture&&g.init(te,i.renderState)}if(Te&&Te.includes("camera-access")&&_){e.state.unbindTexture(),u=n.getBinding();for(let te=0;te<ve.length;te++){let re=ve[te].camera;if(re){let oe=m[re];oe||(oe=new Nr,m[re]=oe);let ae=u.getCameraImage(re);oe.sourceTexture=ae}}}}for(let ve=0;ve<T.length;ve++){let Ge=S[ve],Te=T[ve];Ge!==null&&Te!==void 0&&Te.update(Ge,ee,c||o)}ct&&ct(K,ee),ee.detectedPlanes&&n.dispatchEvent({type:"planesdetected",data:ee}),p=null}let ot=new Kg;ot.setAnimationLoop(tt),this.setAnimationLoop=function(K){ct=K},this.dispose=function(){}}},rb=new ze,n_=new qe;n_.set(-1,0,0,0,1,0,0,0,1);function ob(r,e){function t(g,m){g.matrixAutoUpdate===!0&&g.updateMatrix(),m.value.copy(g.matrix)}function n(g,m){m.color.getRGB(g.fogColor.value,nf(r)),m.isFog?(g.fogNear.value=m.near,g.fogFar.value=m.far):m.isFogExp2&&(g.fogDensity.value=m.density)}function i(g,m,y,b,x){m.isNodeMaterial?m.uniformsNeedUpdate=!1:m.isMeshBasicMaterial?s(g,m):m.isMeshLambertMaterial?(s(g,m),m.envMap&&(g.envMapIntensity.value=m.envMapIntensity)):m.isMeshToonMaterial?(s(g,m),u(g,m)):m.isMeshPhongMaterial?(s(g,m),h(g,m),m.envMap&&(g.envMapIntensity.value=m.envMapIntensity)):m.isMeshStandardMaterial?(s(g,m),d(g,m),m.isMeshPhysicalMaterial&&f(g,m,x)):m.isMeshMatcapMaterial?(s(g,m),p(g,m)):m.isMeshDepthMaterial?s(g,m):m.isMeshDistanceMaterial?(s(g,m),_(g,m)):m.isMeshNormalMaterial?s(g,m):m.isLineBasicMaterial?(o(g,m),m.isLineDashedMaterial&&a(g,m)):m.isPointsMaterial?l(g,m,y,b):m.isSpriteMaterial?c(g,m):m.isShadowMaterial?(g.color.value.copy(m.color),g.opacity.value=m.opacity):m.isShaderMaterial&&(m.uniformsNeedUpdate=!1)}function s(g,m){g.opacity.value=m.opacity,m.color&&g.diffuse.value.copy(m.color),m.emissive&&g.emissive.value.copy(m.emissive).multiplyScalar(m.emissiveIntensity),m.map&&(g.map.value=m.map,t(m.map,g.mapTransform)),m.alphaMap&&(g.alphaMap.value=m.alphaMap,t(m.alphaMap,g.alphaMapTransform)),m.bumpMap&&(g.bumpMap.value=m.bumpMap,t(m.bumpMap,g.bumpMapTransform),g.bumpScale.value=m.bumpScale,m.side===qt&&(g.bumpScale.value*=-1)),m.normalMap&&(g.normalMap.value=m.normalMap,t(m.normalMap,g.normalMapTransform),g.normalScale.value.copy(m.normalScale),m.side===qt&&g.normalScale.value.negate()),m.displacementMap&&(g.displacementMap.value=m.displacementMap,t(m.displacementMap,g.displacementMapTransform),g.displacementScale.value=m.displacementScale,g.displacementBias.value=m.displacementBias),m.emissiveMap&&(g.emissiveMap.value=m.emissiveMap,t(m.emissiveMap,g.emissiveMapTransform)),m.specularMap&&(g.specularMap.value=m.specularMap,t(m.specularMap,g.specularMapTransform)),m.alphaTest>0&&(g.alphaTest.value=m.alphaTest);let y=e.get(m),b=y.envMap,x=y.envMapRotation;b&&(g.envMap.value=b,g.envMapRotation.value.setFromMatrix4(rb.makeRotationFromEuler(x)).transpose(),b.isCubeTexture&&b.isRenderTargetTexture===!1&&g.envMapRotation.value.premultiply(n_),g.reflectivity.value=m.reflectivity,g.ior.value=m.ior,g.refractionRatio.value=m.refractionRatio),m.lightMap&&(g.lightMap.value=m.lightMap,g.lightMapIntensity.value=m.lightMapIntensity,t(m.lightMap,g.lightMapTransform)),m.aoMap&&(g.aoMap.value=m.aoMap,g.aoMapIntensity.value=m.aoMapIntensity,t(m.aoMap,g.aoMapTransform))}function o(g,m){g.diffuse.value.copy(m.color),g.opacity.value=m.opacity,m.map&&(g.map.value=m.map,t(m.map,g.mapTransform))}function a(g,m){g.dashSize.value=m.dashSize,g.totalSize.value=m.dashSize+m.gapSize,g.scale.value=m.scale}function 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bt,yt=ge;if(Re!==null&&(bt=he.get(Re),yt=j,yt.setIndex(bt)),V.isMesh)k.wireframe===!0?(M.setLineWidth(k.wireframeLinewidth*Ye()),yt.setMode(L.LINES)):yt.setMode(L.TRIANGLES);else if(V.isLine){let Jt=k.linewidth;Jt===void 0&&(Jt=1),M.setLineWidth(Jt*Ye()),V.isLineSegments?yt.setMode(L.LINES):V.isLineLoop?yt.setMode(L.LINE_LOOP):yt.setMode(L.LINE_STRIP)}else V.isPoints?yt.setMode(L.POINTS):V.isSprite&&yt.setMode(L.TRIANGLES);if(V.isBatchedMesh)if(nt.get("WEBGL_multi_draw"))yt.renderMultiDraw(V._multiDrawStarts,V._multiDrawCounts,V._multiDrawCount);else{let Jt=V._multiDrawStarts,Ae=V._multiDrawCounts,on=V._multiDrawCount,at=Re?he.get(Re).bytesPerElement:1,In=G.get(k).currentProgram.getUniforms();for(let ri=0;ri<on;ri++)In.setValue(L,"_gl_DrawID",ri),yt.render(Jt[ri]/at,Ae[ri])}else if(V.isInstancedMesh)yt.renderInstances(Ce,Bt,V.count);else if(W.isInstancedBufferGeometry){let Jt=W._maxInstanceCount!==void 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Ee=I.xr.getDepthSensingMesh();Ee!==null&&Mu(Ee,D,-1/0,I.sortObjects)}Mu(A,D,0,I.sortObjects),T.finish(),F!==null&&F.updateLights(S.state.lightsArray),I.sortObjects===!0&&T.sort(ve,Ge),Xe=Ie.enabled===!1||Ie.isPresenting===!1||Ie.hasDepthSensing()===!1,Xe&&Ze.addToRenderList(T,A),this.info.render.frame++,this.info.autoReset===!0&&this.info.reset(),re===!0&&Ue.beginShadows();let V=S.state.shadowsArray;if(Ve.render(V,A,D),re===!0&&Ue.endShadows(),(k&&E.hasRenderPass())===!1){let Ee=T.opaque,Me=T.transmissive;if(S.setupLights(),D.isArrayCamera){let Re=D.cameras;if(Me.length>0)for(let Le=0,$e=Re.length;Le<$e;Le++){let it=Re[Le];ap(Ee,Me,A,it)}Xe&&Ze.render(A);for(let Le=0,$e=Re.length;Le<$e;Le++){let it=Re[Le];op(T,A,it,it.viewport)}}else 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Ee=$.update(A),Me=A.material;if(k&&(A.boundingSphere!==void 0?(A.boundingSphere===null&&A.computeBoundingSphere(),ke.copy(A.boundingSphere.center)):(Ee.boundingSphere===null&&Ee.computeBoundingSphere(),ke.copy(Ee.boundingSphere.center)),ke.applyMatrix4(A.matrixWorld).applyMatrix4(ae)),Array.isArray(Me)){let Re=Ee.groups;for(let Le=0,$e=Re.length;Le<$e;Le++){let it=Re[Le],Ce=Me[it.materialIndex];Ce&&Ce.visible&&T.push(A,Ee,Ce,W,ke.z,it,D)}}else Me.visible&&T.push(A,Ee,Me,W,ke.z,null,D)}}let Se=A.children;for(let Ee=0,Me=Se.length;Ee<Me;Ee++)Mu(Se[Ee],D,W,k)}function op(A,D,W,k){let{opaque:V,transmissive:Se,transparent:Ee}=A;S.setupLightsView(W),re===!0&&Ue.setGlobalState(I.clippingPlanes,W),k&&M.viewport(ne.copy(k)),V.length>0&&Gl(V,D,W),Se.length>0&&Gl(Se,D,W),Ee.length>0&&Gl(Ee,D,W),M.buffers.depth.setTest(!0),M.buffers.depth.setMask(!0),M.buffers.color.setMask(!0),M.setPolygonOffset(!1)}function ap(A,D,W,k){if((W.isScene===!0?W.overrideMaterial:null)!==null)return;if(S.state.transmissionRenderTarget[k.id]===void 0){let Ce=nt.has("EXT_color_buffer_half_float")||nt.has("EXT_color_buffer_float");S.state.transmissionRenderTarget[k.id]=new Zt(1,1,{generateMipmaps:!0,type:Ce?Bn:fn,minFilter:vn,samples:Math.max(4,C.samples),stencilBuffer:s,resolveDepthBuffer:!1,resolveStencilBuffer:!1,storeMultisampledDepthBuffer:!1,storeMultisampledStencilBuffer:!1,colorSpace:Je.workingColorSpace})}let Se=S.state.transmissionRenderTarget[k.id],Ee=k.viewport||ne;Se.setSize(Ee.z*I.transmissionResolutionScale,Ee.w*I.transmissionResolutionScale);let Me=I.getRenderTarget(),Re=I.getActiveCubeFace(),Le=I.getActiveMipmapLevel();I.setRenderTarget(Se),I.getClearColor(ct),tt=I.getClearAlpha(),tt<1&&I.setClearColor(16777215,.5),I.clear(),Xe&&Ze.render(W);let $e=I.toneMapping;I.toneMapping=On;let it=k.viewport;if(k.viewport!==void 0&&(k.viewport=void 0),S.setupLightsView(k),re===!0&&Ue.setGlobalState(I.clippingPlanes,k),Gl(A,W,k),Y.updateMultisampleRenderTarget(Se),Y.updateRenderTargetMipmap(Se),nt.has("WEBGL_multisampled_render_to_texture")===!1){let Ce=!1;for(let ft=0,Bt=D.length;ft<Bt;ft++){let bt=D[ft],{object:yt,geometry:Jt,material:Ae,group:on}=bt;if(Ae.side===Rn&&yt.layers.test(k.layers)){let at=Ae.side;Ae.side=qt,Ae.needsUpdate=!0,lp(yt,W,k,Jt,Ae,on),Ae.side=at,Ae.needsUpdate=!0,Ce=!0}}Ce===!0&&(Y.updateMultisampleRenderTarget(Se),Y.updateRenderTargetMipmap(Se))}I.setRenderTarget(Me,Re,Le),I.setClearColor(ct,tt),it!==void 0&&(k.viewport=it),I.toneMapping=$e}function Gl(A,D,W){let k=D.isScene===!0?D.overrideMaterial:null;for(let V=0,Se=A.length;V<Se;V++){let Ee=A[V],{object:Me,geometry:Re,group:Le}=Ee,$e=Ee.material;$e.allowOverride===!0&&k!==null&&($e=k),Me.layers.test(W.layers)&&lp(Me,D,W,Re,$e,Le)}}function lp(A,D,W,k,V,Se){F!==null&&V.isNodeMaterial&&F.setObject(A,V),A.onBeforeRender(I,D,W,k,V,Se),A.modelViewMatrix.multiplyMatrices(W.matrixWorldInverse,A.matrixWorld),A.normalMatrix.getNormalMatrix(A.modelViewMatrix),V.onBeforeRender(I,D,W,k,A,Se),V.transparent===!0&&V.side===Rn&&V.forceSinglePass===!1?(V.side=qt,V.needsUpdate=!0,I.renderBufferDirect(W,D,k,V,A,Se),V.side=ei,V.needsUpdate=!0,I.renderBufferDirect(W,D,k,V,A,Se),V.side=Rn):I.renderBufferDirect(W,D,k,V,A,Se),A.onAfterRender(I,D,W,k,V,Se)}function Hl(A,D,W){D.isScene!==!0&&(D=Be);let k=G.get(A),V=S.state.lights,Se=S.state.shadowsArray,Ee=V.state.version,Me=pe.getParameters(A,V.state,Se,D,W,S.state.lightProbeGridArray),Re=pe.getProgramCacheKey(Me),Le=k.programs;k.environment=A.isMeshStandardMaterial||A.isMeshLambertMaterial||A.isMeshPhongMaterial?D.environment:null,k.fog=D.fog;let $e=A.isMeshStandardMaterial||A.isMeshLambertMaterial&&!A.envMap||A.isMeshPhongMaterial&&!A.envMap;k.envMap=le.get(A.envMap||k.environment,$e),k.envMapRotation=k.environment!==null&&A.envMap===null?D.environmentRotation:A.envMapRotation,Le===void 0&&(A.addEventListener("dispose",si),Le=new Map,k.programs=Le);let it=Le.get(Re);if(it!==void 0){if(k.currentProgram===it&&k.lightsStateVersion===Ee)return hp(A,Me),it}else Me.uniforms=pe.getUniforms(A),F!==null&&A.isNodeMaterial&&F.build(A,W,Me),A.onBeforeCompile(Me,I),it=pe.acquireProgram(Me,Re),Le.set(Re,it),k.uniforms=Me.uniforms;let Ce=k.uniforms;return(!A.isShaderMaterial&&!A.isRawShaderMaterial||A.clipping===!0)&&(Ce.clippingPlanes=Ue.uniform),hp(A,Me),k.needsLights=b_(A),k.lightsStateVersion=Ee,k.needsLights&&(Ce.ambientLightColor.value=V.state.ambient,Ce.lightProbe.value=V.state.probe,Ce.sunLights.value=V.state.sun,Ce.sunLightShadows.value=V.state.sunShadow,Ce.directionalLights.value=V.state.directional,Ce.directionalLightShadows.value=V.state.directionalShadow,Ce.spotLights.value=V.state.spot,Ce.spotLightShadows.value=V.state.spotShadow,Ce.rectAreaLights.value=V.state.rectArea,Ce.ltc_1.value=V.state.rectAreaLTC1,Ce.ltc_2.value=V.state.rectAreaLTC2,Ce.pointLights.value=V.state.point,Ce.pointLightShadows.value=V.state.pointShadow,Ce.hemisphereLights.value=V.state.hemi,Ce.sunShadowMatrix.value=V.state.sunShadowMatrix,Ce.sunShadowCascade.value=V.state.sunShadowCascade,Ce.directionalShadowMatrix.value=V.state.directionalShadowMatrix,Ce.spotLightMatrix.value=V.state.spotLightMatrix,Ce.spotLightMap.value=V.state.spotLightMap,Ce.pointShadowMatrix.value=V.state.pointShadowMatrix),k.lightProbeGrid=S.state.lightProbeGridArray.length>0,k.currentProgram=it,k.uniformsList=null,it}function cp(A){if(A.uniformsList===null){let D=A.currentProgram.getUniforms();A.uniformsList=xo.seqWithValue(D.seq,A.uniforms)}return A.uniformsList}function hp(A,D){let W=G.get(A);W.outputColorSpace=D.outputColorSpace,W.batching=D.batching,W.batchingColor=D.batchingColor,W.instancing=D.instancing,W.instancingColor=D.instancingColor,W.instancingMorph=D.instancingMorph,W.skinning=D.skinning,W.morphTargets=D.morphTargets,W.morphNormals=D.morphNormals,W.morphColors=D.morphColors,W.morphTargetsCount=D.morphTargetsCount,W.numClippingPlanes=D.numClippingPlanes,W.numIntersection=D.numClipIntersection,W.vertexAlphas=D.vertexAlphas,W.vertexTangents=D.vertexTangents,W.toneMapping=D.toneMapping}function v_(A,D){if(A.length===0)return null;if(A.length===1)return A[0].texture!==null?A[0]:null;x.setFromMatrixPosition(D.matrixWorld);for(let W=0,k=A.length;W<k;W++){let V=A[W];if(V.texture!==null&&V.boundingBox.containsPoint(x))return V}return null}function 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at=!1;k.version===Ae.__version?(Ae.needsLights&&Ae.lightsStateVersion!==on.state.version||Ae.outputColorSpace!==Me||V.isBatchedMesh&&Ae.batching===!1||!V.isBatchedMesh&&Ae.batching===!0||V.isBatchedMesh&&Ae.batchingColor===!0&&V._colorsTexture===null||V.isBatchedMesh&&Ae.batchingColor===!1&&V._colorsTexture!==null||V.isInstancedMesh&&Ae.instancing===!1||!V.isInstancedMesh&&Ae.instancing===!0||V.isSkinnedMesh&&Ae.skinning===!1||!V.isSkinnedMesh&&Ae.skinning===!0||V.isInstancedMesh&&Ae.instancingColor===!0&&V.instanceColor===null||V.isInstancedMesh&&Ae.instancingColor===!1&&V.instanceColor!==null||V.isInstancedMesh&&Ae.instancingMorph===!0&&V.morphTexture===null||V.isInstancedMesh&&Ae.instancingMorph===!1&&V.morphTexture!==null||Ae.envMap!==Le||k.fog===!0&&Ae.fog!==Se||Ae.numClippingPlanes!==void 0&&(Ae.numClippingPlanes!==Ue.numPlanes||Ae.numIntersection!==Ue.numIntersection)||Ae.vertexAlphas!==$e||Ae.vertexTangents!==it||Ae.morphTargets!==Ce||Ae.morphNormals!==ft||Ae.morphColors!==Bt||Ae.toneMapping!==bt||Ae.morphTargetsCount!==Jt||!!Ae.lightProbeGrid!=S.state.lightProbeGridArray.length>0)&&(at=!0):(at=!0,Ae.__version=k.version);let In=Ae.currentProgram;at===!0&&(In=Hl(k,D,V),F&&k.isNodeMaterial&&F.onUpdateProgram(k,In,Ae));let ri=!1,Vi=!1,tr=!1,xt=In.getUniforms(),Dt=Ae.uniforms;if(M.useProgram(In.program)&&(ri=!0,Vi=!0,tr=!0),k.id!==q&&(q=k.id,Vi=!0),Ae.needsLights){let St=v_(S.state.lightProbeGridArray,V);Ae.lightProbeGrid!==St&&(Ae.lightProbeGrid=St,Vi=!0)}if(ri||Q!==A){M.buffers.depth.getReversed()&&A.reversedDepth!==!0&&(A._reversedDepth=!0,A.updateProjectionMatrix()),xt.setValue(L,"projectionMatrix",A.projectionMatrix),xt.setValue(L,"viewMatrix",A.matrixWorldInverse);let Hi=xt.map.cameraPosition;Hi!==void 0&&Hi.setValue(L,ue.setFromMatrixPosition(A.matrixWorld)),C.logarithmicDepthBuffer&&xt.setValue(L,"logDepthBufFC",2/(Math.log(A.far+1)/Math.LN2)),(k.isMeshPhongMaterial||k.isMeshToonMaterial||k.isMeshLambertMaterial||k.isMeshBasicMaterial||k.isMeshStandardMaterial||k.isShaderMaterial)&&xt.setValue(L,"isOrthographic",A.isOrthographicCamera===!0),Q!==A&&(Q=A,Vi=!0,tr=!0)}if(Ae.needsLights&&(on.state.sunShadowMap.length>0&&xt.setValue(L,"sunShadowMap",on.state.sunShadowMap,Y),on.state.directionalShadowMap.length>0&&xt.setValue(L,"directionalShadowMap",on.state.directionalShadowMap,Y),on.state.spotShadowMap.length>0&&xt.setValue(L,"spotShadowMap",on.state.spotShadowMap,Y),on.state.pointShadowMap.length>0&&xt.setValue(L,"pointShadowMap",on.state.pointShadowMap,Y)),V.isSkinnedMesh){xt.setOptional(L,V,"bindMatrix"),xt.setOptional(L,V,"bindMatrixInverse");let St=V.skeleton;St&&(St.boneTexture===null&&St.computeBoneTexture(),xt.setValue(L,"boneTexture",St.boneTexture,Y))}V.isBatchedMesh&&(xt.setOptional(L,V,"batchingTexture"),xt.setValue(L,"batchingTexture",V._matricesTexture,Y),xt.setOptional(L,V,"batchingIdTexture"),xt.setValue(L,"batchingIdTexture",V._indirectTexture,Y),xt.setOptional(L,V,"batchingColorTexture"),V._colorsTexture!==null&&xt.setValue(L,"batchingColorTexture",V._colorsTexture,Y));let Gi=W.morphAttributes;if((Gi.position!==void 0||Gi.normal!==void 0||Gi.color!==void 0)&&U.update(V,W,In),(Vi||Ae.receiveShadow!==V.receiveShadow)&&(Ae.receiveShadow=V.receiveShadow,xt.setValue(L,"receiveShadow",V.receiveShadow)),(k.isMeshStandardMaterial||k.isMeshLambertMaterial||k.isMeshPhongMaterial)&&k.envMap===null&&D.environment!==null&&(Dt.envMapIntensity.value=D.environmentIntensity),Dt.dfgLUT!==void 0&&(Dt.dfgLUT.value=cb()),Vi){if(xt.setValue(L,"toneMappingExposure",I.toneMappingExposure),Ae.needsLights&&S_(Dt,tr),Se&&k.fog===!0&&De.refreshFogUniforms(Dt,Se),De.refreshMaterialUniforms(Dt,k,ee,K,S.state.transmissionRenderTarget[A.id]),Ae.needsLights&&Ae.lightProbeGrid){let St=Ae.lightProbeGrid;Dt.probesSH.value=St.texture,Dt.probesMin.value.copy(St.boundingBox.min),Dt.probesMax.value.copy(St.boundingBox.max),Dt.probesResolution.value.copy(St.resolution)}xo.upload(L,cp(Ae),Dt,Y)}if(k.isShaderMaterial&&k.uniformsNeedUpdate===!0&&(xo.upload(L,cp(Ae),Dt,Y),k.uniformsNeedUpdate=!1),k.isSpriteMaterial&&xt.setValue(L,"center",V.center),xt.setValue(L,"modelViewMatrix",V.modelViewMatrix),xt.setValue(L,"normalMatrix",V.normalMatrix),xt.setValue(L,"modelMatrix",V.matrixWorld),k.uniformsGroups!==void 0){let St=k.uniformsGroups;for(let Hi=0,nr=St.length;Hi<nr;Hi++){let dp=St[Hi];se.update(dp,In),se.bind(dp,In)}}return In}function S_(A,D){A.ambientLightColor.needsUpdate=D,A.lightProbe.needsUpdate=D,A.sunLights.needsUpdate=D,A.sunLightShadows.needsUpdate=D,A.directionalLights.needsUpdate=D,A.directionalLightShadows.needsUpdate=D,A.pointLights.needsUpdate=D,A.pointLightShadows.needsUpdate=D,A.spotLights.needsUpdate=D,A.spotLightShadows.needsUpdate=D,A.rectAreaLights.needsUpdate=D,A.hemisphereLights.needsUpdate=D}function b_(A){return A.isMeshLambertMaterial||A.isMeshToonMaterial||A.isMeshPhongMaterial||A.isMeshStandardMaterial||A.isShadowMaterial||A.isShaderMaterial&&A.lights===!0}this.getActiveCubeFace=function(){return H},this.getActiveMipmapLevel=function(){return X},this.getRenderTarget=function(){return ie},this.setRenderTargetTextures=function(A,D,W){let k=G.get(A);k.__autoAllocateDepthBuffer=A.resolveDepthBuffer===!1,k.__autoAllocateDepthBuffer===!1&&(k.__useRenderToTexture=!1),G.get(A.texture).__webglTexture=D,G.get(A.depthTexture).__webglTexture=k.__autoAllocateDepthBuffer?void 0:W,k.__hasExternalTextures=!0},this.setRenderTargetFramebuffer=function(A,D){let W=G.get(A);W.__webglFramebuffer=D,W.__useDefaultFramebuffer=D===void 0},this.setRenderTarget=function(A,D=0,W=0){ie=A,H=D,X=W;let k=null,V=!1,Se=!1;if(A){let Me=G.get(A);if(Me.__useDefaultFramebuffer!==void 0){M.bindFramebuffer(L.FRAMEBUFFER,Me.__webglFramebuffer),ne.copy(A.viewport),Ne.copy(A.scissor),we=A.scissorTest,M.viewport(ne),M.scissor(Ne),M.setScissorTest(we),q=-1;return}else if(Me.__webglFramebuffer===void 0)Y.setupRenderTarget(A);else if(Me.__hasExternalTextures)Y.rebindTextures(A,G.get(A.texture).__webglTexture,G.get(A.depthTexture).__webglTexture);else if(A.depthBuffer){let $e=A.depthTexture;if(Me.__boundDepthTexture!==$e){if($e!==null&&G.has($e)&&(A.width!==$e.image.width||A.height!==$e.image.height))throw new Error("THREE.WebGLRenderer: Attached DepthTexture is initialized to the incorrect size.");Y.setupDepthRenderbuffer(A)}}let Re=A.texture;(Re.isData3DTexture||Re.isDataArrayTexture||Re.isCompressedArrayTexture)&&(Se=!0);let Le=G.get(A).__webglFramebuffer;A.isWebGLCubeRenderTarget?(Array.isArray(Le[D])?k=Le[D][W]:k=Le[D],V=!0):A.samples>0&&Y.useMultisampledRTT(A)===!1?k=G.get(A).__webglMultisampledFramebuffer:Array.isArray(Le)?k=Le[W]:k=Le,ne.copy(A.viewport),Ne.copy(A.scissor),we=A.scissorTest}else ne.copy(Te).multiplyScalar(ee).floor(),Ne.copy(We).multiplyScalar(ee).floor(),we=gt;if(W!==0&&(k=z),M.bindFramebuffer(L.FRAMEBUFFER,k)&&M.drawBuffers(A,k),M.viewport(ne),M.scissor(Ne),M.setScissorTest(we),V){let Me=G.get(A.texture);L.framebufferTexture2D(L.FRAMEBUFFER,L.COLOR_ATTACHMENT0,L.TEXTURE_CUBE_MAP_POSITIVE_X+D,Me.__webglTexture,W)}else if(Se){let Me=D;for(let Re=0;Re<A.textures.length;Re++){let Le=G.get(A.textures[Re]);L.framebufferTextureLayer(L.FRAMEBUFFER,L.COLOR_ATTACHMENT0+Re,Le.__webglTexture,W,Me)}}else if(A!==null&&W!==0){let Me=G.get(A.texture);L.framebufferTexture2D(L.FRAMEBUFFER,L.COLOR_ATTACHMENT0,L.TEXTURE_2D,Me.__webglTexture,W)}q=-1};function up(A){let D=G.get(A);return(D.__readFormat!==A.format||D.__readType!==A.type)&&(D.__readFormat=A.format,D.__readType=A.type,D.__formatReadable=C.textureFormatReadable(A.format),D.__typeReadable=C.textureTypeReadable(A.type)),D}this.readRenderTargetPixels=function(A,D,W,k,V,Se,Ee,Me=0){if(!(A&&A.isWebGLRenderTarget)){Pe("WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.");return}let Re=G.get(A).__webglFramebuffer;if(A.isWebGLCubeRenderTarget&&Ee!==void 0&&(Re=Re[Ee]),Re){M.bindFramebuffer(L.FRAMEBUFFER,Re);try{let Le=A.textures[Me],$e=Le.format,it=Le.type;A.textures.length>1&&L.readBuffer(L.COLOR_ATTACHMENT0+Me);let Ce=up(Le);if(Ce.__formatReadable===!1){Pe("WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.");return}if(Ce.__typeReadable===!1){Pe("WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.");return}D>=0&&D<=A.width-k&&W>=0&&W<=A.height-V&&L.readPixels(D,W,k,V,_e.convert($e),_e.convert(it),Se)}finally{let Le=ie!==null?G.get(ie).__webglFramebuffer:null;M.bindFramebuffer(L.FRAMEBUFFER,Le)}}},this.readRenderTargetPixelsAsync=async function(A,D,W,k,V,Se,Ee,Me=0){if(!(A&&A.isWebGLRenderTarget))throw new Error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.");let Re=G.get(A).__webglFramebuffer;if(A.isWebGLCubeRenderTarget&&Ee!==void 0&&(Re=Re[Ee]),Re)if(D>=0&&D<=A.width-k&&W>=0&&W<=A.height-V){M.bindFramebuffer(L.FRAMEBUFFER,Re);let Le=A.textures[Me],$e=Le.format,it=Le.type;A.textures.length>1&&L.readBuffer(L.COLOR_ATTACHMENT0+Me);let Ce=up(Le);if(Ce.__formatReadable===!1)throw new Error("THREE.WebGLRenderer.readRenderTargetPixelsAsync: renderTarget is not in RGBA or implementation defined format.");if(Ce.__typeReadable===!1)throw new Error("THREE.WebGLRenderer.readRenderTargetPixelsAsync: renderTarget is not in UnsignedByteType or implementation defined type.");let ft=L.createBuffer();L.bindBuffer(L.PIXEL_PACK_BUFFER,ft),L.bufferData(L.PIXEL_PACK_BUFFER,Se.byteLength,L.STREAM_READ),L.readPixels(D,W,k,V,_e.convert($e),_e.convert(it),0),L.bindBuffer(L.PIXEL_PACK_BUFFER,null);let Bt=ie!==null?G.get(ie).__webglFramebuffer:null;M.bindFramebuffer(L.FRAMEBUFFER,Bt);let bt=L.fenceSync(L.SYNC_GPU_COMMANDS_COMPLETE,0);return L.flush(),await gg(L,bt,4),L.bindBuffer(L.PIXEL_PACK_BUFFER,ft),L.getBufferSubData(L.PIXEL_PACK_BUFFER,0,Se),L.bindBuffer(L.PIXEL_PACK_BUFFER,null),L.deleteBuffer(ft),L.deleteSync(bt),Se}else throw new Error("THREE.WebGLRenderer.readRenderTargetPixelsAsync: requested read bounds are out of range.")},this.copyFramebufferToTexture=function(A,D=null,W=0){let k=Math.pow(2,-W),V=Math.floor(A.image.width*k),Se=Math.floor(A.image.height*k),Ee=D!==null?D.x:0,Me=D!==null?D.y:0;Y.setTexture2D(A,0),L.copyTexSubImage2D(L.TEXTURE_2D,W,0,0,Ee,Me,V,Se),M.unbindTexture()},this.copyTextureToTexture=function(A,D,W=null,k=null,V=0,Se=0){let Ee,Me,Re,Le,$e,it,Ce,ft,Bt,bt=A.isCompressedTexture?A.mipmaps[Se]:A.image;if(W!==null)Ee=W.max.x-W.min.x,Me=W.max.y-W.min.y,Re=W.isBox3?W.max.z-W.min.z:1,Le=W.min.x,$e=W.min.y,it=W.isBox3?W.min.z:0;else{let Dt=Math.pow(2,-V);Ee=Math.floor(bt.width*Dt),Me=Math.floor(bt.height*Dt),A.isDataArrayTexture?Re=bt.depth:A.isData3DTexture?Re=Math.floor(bt.depth*Dt):Re=1,Le=0,$e=0,it=0}k!==null?(Ce=k.x,ft=k.y,Bt=k.z):(Ce=0,ft=0,Bt=0);let yt=_e.convert(D.format),Jt=_e.convert(D.type),Ae;D.isData3DTexture?(Y.setTexture3D(D,0),Ae=L.TEXTURE_3D):D.isDataArrayTexture||D.isCompressedArrayTexture?(Y.setTexture2DArray(D,0),Ae=L.TEXTURE_2D_ARRAY):(Y.setTexture2D(D,0),Ae=L.TEXTURE_2D),M.activeTexture(L.TEXTURE0),M.pixelStorei(L.UNPACK_FLIP_Y_WEBGL,D.flipY),M.pixelStorei(L.UNPACK_PREMULTIPLY_ALPHA_WEBGL,D.premultiplyAlpha),M.pixelStorei(L.UNPACK_ALIGNMENT,D.unpackAlignment);let on=M.getParameter(L.UNPACK_ROW_LENGTH),at=M.getParameter(L.UNPACK_IMAGE_HEIGHT),In=M.getParameter(L.UNPACK_SKIP_PIXELS),ri=M.getParameter(L.UNPACK_SKIP_ROWS),Vi=M.getParameter(L.UNPACK_SKIP_IMAGES);M.pixelStorei(L.UNPACK_ROW_LENGTH,bt.width),M.pixelStorei(L.UNPACK_IMAGE_HEIGHT,bt.height),M.pixelStorei(L.UNPACK_SKIP_PIXELS,Le),M.pixelStorei(L.UNPACK_SKIP_ROWS,$e),M.pixelStorei(L.UNPACK_SKIP_IMAGES,it);let tr=A.isDataArrayTexture||A.isData3DTexture,xt=D.isDataArrayTexture||D.isData3DTexture;if(A.isDepthTexture){let Dt=G.get(A),Gi=G.get(D),St=G.get(Dt.__renderTarget),Hi=G.get(Gi.__renderTarget);M.bindFramebuffer(L.READ_FRAMEBUFFER,St.__webglFramebuffer),M.bindFramebuffer(L.DRAW_FRAMEBUFFER,Hi.__webglFramebuffer);for(let nr=0;nr<Re;nr++)tr&&(L.framebufferTextureLayer(L.READ_FRAMEBUFFER,L.COLOR_ATTACHMENT0,G.get(A).__webglTexture,V,it+nr),L.framebufferTextureLayer(L.DRAW_FRAMEBUFFER,L.COLOR_ATTACHMENT0,G.get(D).__webglTexture,Se,Bt+nr)),L.blitFramebuffer(Le,$e,Ee,Me,Ce,ft,Ee,Me,L.DEPTH_BUFFER_BIT,L.NEAREST);M.bindFramebuffer(L.READ_FRAMEBUFFER,null),M.bindFramebuffer(L.DRAW_FRAMEBUFFER,null)}else if(V!==0||A.isRenderTargetTexture||G.has(A)){let Dt=G.get(A),Gi=G.get(D);M.bindFramebuffer(L.READ_FRAMEBUFFER,N),M.bindFramebuffer(L.DRAW_FRAMEBUFFER,B);for(let St=0;St<Re;St++)tr?L.framebufferTextureLayer(L.READ_FRAMEBUFFER,L.COLOR_ATTACHMENT0,Dt.__webglTexture,V,it+St):L.framebufferTexture2D(L.READ_FRAMEBUFFER,L.COLOR_ATTACHMENT0,L.TEXTURE_2D,Dt.__webglTexture,V),xt?L.framebufferTextureLayer(L.DRAW_FRAMEBUFFER,L.COLOR_ATTACHMENT0,Gi.__webglTexture,Se,Bt+St):L.framebufferTexture2D(L.DRAW_FRAMEBUFFER,L.COLOR_ATTACHMENT0,L.TEXTURE_2D,Gi.__webglTexture,Se),V!==0?L.blitFramebuffer(Le,$e,Ee,Me,Ce,ft,Ee,Me,L.COLOR_BUFFER_BIT,L.NEAREST):xt?L.copyTexSubImage3D(Ae,Se,Ce,ft,Bt+St,Le,$e,Ee,Me):L.copyTexSubImage2D(Ae,Se,Ce,ft,Le,$e,Ee,Me);M.bindFramebuffer(L.READ_FRAMEBUFFER,null),M.bindFramebuffer(L.DRAW_FRAMEBUFFER,null)}else xt?A.isDataTexture||A.isData3DTexture?L.texSubImage3D(Ae,Se,Ce,ft,Bt,Ee,Me,Re,yt,Jt,bt.data):D.isCompressedArrayTexture?L.compressedTexSubImage3D(Ae,Se,Ce,ft,Bt,Ee,Me,Re,yt,bt.data):L.texSubImage3D(Ae,Se,Ce,ft,Bt,Ee,Me,Re,yt,Jt,bt):A.isDataTexture?L.texSubImage2D(L.TEXTURE_2D,Se,Ce,ft,Ee,Me,yt,Jt,bt.data):A.isCompressedTexture?L.compressedTexSubImage2D(L.TEXTURE_2D,Se,Ce,ft,bt.width,bt.height,yt,bt.data):L.texSubImage2D(L.TEXTURE_2D,Se,Ce,ft,Ee,Me,yt,Jt,bt);M.pixelStorei(L.UNPACK_ROW_LENGTH,on),M.pixelStorei(L.UNPACK_IMAGE_HEIGHT,at),M.pixelStorei(L.UNPACK_SKIP_PIXELS,In),M.pixelStorei(L.UNPACK_SKIP_ROWS,ri),M.pixelStorei(L.UNPACK_SKIP_IMAGES,Vi),Se===0&&D.generateMipmaps&&L.generateMipmap(Ae),M.unbindTexture()},this.initRenderTarget=function(A){G.get(A).__webglFramebuffer===void 0&&Y.setupRenderTarget(A)},this.initTexture=function(A){A.isCubeTexture?Y.setTextureCube(A,0):A.isData3DTexture?Y.setTexture3D(A,0):A.isDataArrayTexture||A.isCompressedArrayTexture?Y.setTexture2DArray(A,0):Y.setTexture2D(A,0),M.unbindTexture()},this.resetState=function(){H=0,X=0,ie=null,M.reset(),be.reset()},typeof __THREE_DEVTOOLS__<"u"&&__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("observe",{detail:this}))}get coordinateSystem(){return _n}get outputColorSpace(){return this._outputColorSpace}set outputColorSpace(e){this._outputColorSpace=e;let t=this.getContext();t.drawingBufferColorSpace=Je._getDrawingBufferColorSpace(e),t.unpackColorSpace=Je._getUnpackColorSpace()}};var i_={type:"change"},Ef={type:"start"},r_={type:"end"},uu=new Jn,s_=new gn,hb=Math.cos(70*mo.DEG2RAD),Ht=new R,Mn=2*Math.PI,_t={NONE:-1,ROTATE:0,DOLLY:1,PAN:2,TOUCH_ROTATE:3,TOUCH_PAN:4,TOUCH_DOLLY_PAN:5,TOUCH_DOLLY_ROTATE:6},Af=1e-6,du=class extends eo{constructor(e,t=null){super(e,t),this.state=_t.NONE,this.target=new R,this.cursor=new R,this.minDistance=0,this.maxDistance=1/0,this.minZoom=0,this.maxZoom=1/0,this.minTargetRadius=0,this.maxTargetRadius=1/0,this.minPolarAngle=0,this.maxPolarAngle=Math.PI,this.minAzimuthAngle=-1/0,this.maxAzimuthAngle=1/0,this.enableDamping=!1,this.dampingFactor=.05,this.enableZoom=!0,this.zoomSpeed=1,this.enableRotate=!0,this.rotateSpeed=1,this.keyRotateSpeed=1,this.enablePan=!0,this.panSpeed=1,this.screenSpacePanning=!0,this.keyPanSpeed=7,this.zoomToCursor=!1,this.autoRotate=!1,this.autoRotateSpeed=2,this.keys={LEFT:"ArrowLeft",UP:"ArrowUp",RIGHT:"ArrowRight",BOTTOM:"ArrowDown"},this.mouseButtons={LEFT:Ui.ROTATE,MIDDLE:Ui.DOLLY,RIGHT:Ui.PAN},this.touches={ONE:Fi.ROTATE,TWO:Fi.DOLLY_PAN},this.target0=this.target.clone(),this.position0=this.object.position.clone(),this.zoom0=this.object.zoom,this._cursorStyle="auto",this._domElementKeyEvents=null,this._lastPosition=new R,this._lastQuaternion=new wt,this._lastTargetPosition=new R,this._quat=new wt().setFromUnitVectors(e.up,new R(0,1,0)),this._quatInverse=this._quat.clone().invert(),this._spherical=new Xs,this._sphericalDelta=new Xs,this._scale=1,this._panOffset=new R,this._rotateStart=new J,this._rotateEnd=new J,this._rotateDelta=new J,this._panStart=new J,this._panEnd=new J,this._panDelta=new J,this._dollyStart=new J,this._dollyEnd=new J,this._dollyDelta=new J,this._dollyDirection=new R,this._mouse=new J,this._performCursorZoom=!1,this._pointers=[],this._pointerPositions={},this._controlActive=!1,this._onPointerMove=db.bind(this),this._onPointerDown=ub.bind(this),this._onPointerUp=fb.bind(this),this._onContextMenu=vb.bind(this),this._onMouseWheel=gb.bind(this),this._onKeyDown=_b.bind(this),this._onTouchStart=xb.bind(this),this._onTouchMove=yb.bind(this),this._onMouseDown=pb.bind(this),this._onMouseMove=mb.bind(this),this._interceptControlDown=Mb.bind(this),this._interceptControlUp=Sb.bind(this),this.domElement!==null&&this.connect(this.domElement),this.update()}set cursorStyle(e){this._cursorStyle=e,e==="grab"?this.domElement.style.cursor="grab":this.domElement.style.cursor="auto"}get cursorStyle(){return this._cursorStyle}connect(e){super.connect(e),this.domElement.addEventListener("pointerdown",this._onPointerDown),this.domElement.addEventListener("pointercancel",this._onPointerUp),this.domElement.addEventListener("contextmenu",this._onContextMenu),this.domElement.addEventListener("wheel",this._onMouseWheel,{passive:!1}),this.domElement.getRootNode().addEventListener("keydown",this._interceptControlDown,{passive:!0,capture:!0}),this.domElement.style.touchAction="none"}disconnect(){this.state=_t.NONE,this.domElement.removeEventListener("pointerdown",this._onPointerDown),this.domElement.ownerDocument.removeEventListener("pointermove",this._onPointerMove),this.domElement.ownerDocument.removeEventListener("pointerup",this._onPointerUp),this.domElement.removeEventListener("pointercancel",this._onPointerUp),this.domElement.removeEventListener("wheel",this._onMouseWheel),this.domElement.removeEventListener("contextmenu",this._onContextMenu),this.stopListenToKeyEvents();let e=this.domElement.getRootNode();e.removeEventListener("keydown",this._interceptControlDown,{capture:!0}),e.removeEventListener("keyup",this._interceptControlUp,{capture:!0}),this._controlActive=!1,this._pointers.length=0,this._pointerPositions={},this.domElement.style.touchAction="",this.domElement.style.cursor="auto"}dispose(){this.disconnect()}getPolarAngle(){return this._spherical.phi}getAzimuthalAngle(){return this._spherical.theta}getDistance(){return this.object.position.distanceTo(this.target)}listenToKeyEvents(e){e.addEventListener("keydown",this._onKeyDown),this._domElementKeyEvents=e}stopListenToKeyEvents(){this._domElementKeyEvents!==null&&(this._domElementKeyEvents.removeEventListener("keydown",this._onKeyDown),this._domElementKeyEvents=null)}saveState(){this.target0.copy(this.target),this.position0.copy(this.object.position),this.zoom0=this.object.zoom}reset(){this.target.copy(this.target0),this.object.position.copy(this.position0),this.object.zoom=this.zoom0,this.object.updateProjectionMatrix(),this.dispatchEvent(i_),this.update(),this.state=_t.NONE}pan(e,t){this._pan(e,t),this.update()}dollyIn(e){this._dollyIn(e),this.update()}dollyOut(e){this._dollyOut(e),this.update()}rotateLeft(e){this._rotateLeft(e),this.update()}rotateUp(e){this._rotateUp(e),this.update()}update(e=null){let t=this.object.position;Ht.copy(t).sub(this.target),Ht.applyQuaternion(this._quat),this._spherical.setFromVector3(Ht),this.autoRotate&&this.state===_t.NONE&&this._rotateLeft(this._getAutoRotationAngle(e)),this.enableDamping?(this._spherical.theta+=this._sphericalDelta.theta*this.dampingFactor,this._spherical.phi+=this._sphericalDelta.phi*this.dampingFactor):(this._spherical.theta+=this._sphericalDelta.theta,this._spherical.phi+=this._sphericalDelta.phi);let n=this.minAzimuthAngle,i=this.maxAzimuthAngle;isFinite(n)&&isFinite(i)&&(n<-Math.PI?n+=Mn:n>Math.PI&&(n-=Mn),i<-Math.PI?i+=Mn:i>Math.PI&&(i-=Mn),n<=i?this._spherical.theta=Math.max(n,Math.min(i,this._spherical.theta)):this._spherical.theta=this._spherical.theta>(n+i)/2?Math.max(n,this._spherical.theta):Math.min(i,this._spherical.theta)),this._spherical.phi=Math.max(this.minPolarAngle,Math.min(this.maxPolarAngle,this._spherical.phi)),this._spherical.makeSafe(),this.enableDamping===!0?this.target.addScaledVector(this._panOffset,this.dampingFactor):this.target.add(this._panOffset),this.target.sub(this.cursor),this.target.clampLength(this.minTargetRadius,this.maxTargetRadius),this.target.add(this.cursor);let s=!1;if(this.zoomToCursor&&this._performCursorZoom||this.object.isOrthographicCamera)this._spherical.radius=this._clampDistance(this._spherical.radius);else{let o=this._spherical.radius;this._spherical.radius=this._clampDistance(this._spherical.radius*this._scale),s=o!=this._spherical.radius}if(Ht.setFromSpherical(this._spherical),Ht.applyQuaternion(this._quatInverse),t.copy(this.target).add(Ht),this.object.lookAt(this.target),this.enableDamping===!0?(this._sphericalDelta.theta*=1-this.dampingFactor,this._sphericalDelta.phi*=1-this.dampingFactor,this._panOffset.multiplyScalar(1-this.dampingFactor)):(this._sphericalDelta.set(0,0,0),this._panOffset.set(0,0,0)),this.zoomToCursor&&this._performCursorZoom){let o=null;if(this.object.isPerspectiveCamera){let a=Ht.length();o=this._clampDistance(a*this._scale);let l=a-o;this.object.position.addScaledVector(this._dollyDirection,l),this.object.updateMatrixWorld(),s=!!l}else if(this.object.isOrthographicCamera){let a=new R(this._mouse.x,this._mouse.y,0);a.unproject(this.object);let l=this.object.zoom;this.object.zoom=Math.max(this.minZoom,Math.min(this.maxZoom,this.object.zoom/this._scale)),this.object.updateProjectionMatrix(),s=l!==this.object.zoom;let c=new R(this._mouse.x,this._mouse.y,0);c.unproject(this.object),this.object.position.sub(c).add(a),this.object.updateMatrixWorld(),o=Ht.length()}else console.warn("WARNING: OrbitControls.js encountered an unknown camera type - zoom to cursor disabled."),this.zoomToCursor=!1;o!==null&&(this.screenSpacePanning?this.target.set(0,0,-1).transformDirection(this.object.matrix).multiplyScalar(o).add(this.object.position):(uu.origin.copy(this.object.position),uu.direction.set(0,0,-1).transformDirection(this.object.matrix),Math.abs(this.object.up.dot(uu.direction))<hb?this.object.lookAt(this.target):(s_.setFromNormalAndCoplanarPoint(this.object.up,this.target),uu.intersectPlane(s_,this.target))))}else if(this.object.isOrthographicCamera){let o=this.object.zoom;this.object.zoom=Math.max(this.minZoom,Math.min(this.maxZoom,this.object.zoom/this._scale)),o!==this.object.zoom&&(this.object.updateProjectionMatrix(),s=!0)}return this._scale=1,this._performCursorZoom=!1,s||this._lastPosition.distanceToSquared(this.object.position)>Af||8*(1-this._lastQuaternion.dot(this.object.quaternion))>Af||this._lastTargetPosition.distanceToSquared(this.target)>Af?(this.dispatchEvent(i_),this._lastPosition.copy(this.object.position),this._lastQuaternion.copy(this.object.quaternion),this._lastTargetPosition.copy(this.target),!0):!1}_getAutoRotationAngle(e){return e!==null?Mn/60*this.autoRotateSpeed*e:Mn/60/60*this.autoRotateSpeed}_getZoomScale(e){let t=Math.abs(e*.01);return Math.pow(.95,this.zoomSpeed*t)}_rotateLeft(e){this._sphericalDelta.theta-=e}_rotateUp(e){this._sphericalDelta.phi-=e}_panLeft(e,t){Ht.setFromMatrixColumn(t,0),Ht.multiplyScalar(-e),this._panOffset.add(Ht)}_panUp(e,t){this.screenSpacePanning===!0?Ht.setFromMatrixColumn(t,1):(Ht.setFromMatrixColumn(t,0),Ht.crossVectors(this.object.up,Ht)),Ht.multiplyScalar(e),this._panOffset.add(Ht)}_pan(e,t){let n=this.domElement;if(this.object.isPerspectiveCamera){let i=this.object.position;Ht.copy(i).sub(this.target);let s=Ht.length();s*=Math.tan(this.object.fov/2*Math.PI/180),this._panLeft(2*e*s/n.clientHeight,this.object.matrix),this._panUp(2*t*s/n.clientHeight,this.object.matrix)}else this.object.isOrthographicCamera?(this._panLeft(e*(this.object.right-this.object.left)/this.object.zoom/n.clientWidth,this.object.matrix),this._panUp(t*(this.object.top-this.object.bottom)/this.object.zoom/n.clientHeight,this.object.matrix)):(console.warn("WARNING: OrbitControls.js encountered an unknown camera type - pan disabled."),this.enablePan=!1)}_dollyOut(e){this.object.isPerspectiveCamera||this.object.isOrthographicCamera?this._scale/=e:(console.warn("WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled."),this.enableZoom=!1)}_dollyIn(e){this.object.isPerspectiveCamera||this.object.isOrthographicCamera?this._scale*=e:(console.warn("WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled."),this.enableZoom=!1)}_updateZoomParameters(e,t){if(!this.zoomToCursor)return;this._performCursorZoom=!0;let n=this.domElement.getBoundingClientRect(),i=e-n.left,s=t-n.top,o=n.width,a=n.height;this._mouse.x=i/o*2-1,this._mouse.y=-(s/a)*2+1,this._dollyDirection.set(this._mouse.x,this._mouse.y,1).unproject(this.object).sub(this.object.position).normalize()}_clampDistance(e){return Math.max(this.minDistance,Math.min(this.maxDistance,e))}_handleMouseDownRotate(e){this._rotateStart.set(e.clientX,e.clientY)}_handleMouseDownDolly(e){this._updateZoomParameters(e.clientX,e.clientX),this._dollyStart.set(e.clientX,e.clientY)}_handleMouseDownPan(e){this._panStart.set(e.clientX,e.clientY)}_handleMouseMoveRotate(e){this._rotateEnd.set(e.clientX,e.clientY),this._rotateDelta.subVectors(this._rotateEnd,this._rotateStart).multiplyScalar(this.rotateSpeed);let t=this.domElement;this._rotateLeft(Mn*this._rotateDelta.x/t.clientHeight),this._rotateUp(Mn*this._rotateDelta.y/t.clientHeight),this._rotateStart.copy(this._rotateEnd),this.update()}_handleMouseMoveDolly(e){this._dollyEnd.set(e.clientX,e.clientY),this._dollyDelta.subVectors(this._dollyEnd,this._dollyStart),this._dollyDelta.y>0?this._dollyOut(this._getZoomScale(this._dollyDelta.y)):this._dollyDelta.y<0&&this._dollyIn(this._getZoomScale(this._dollyDelta.y)),this._dollyStart.copy(this._dollyEnd),this.update()}_handleMouseMovePan(e){this._panEnd.set(e.clientX,e.clientY),this._panDelta.subVectors(this._panEnd,this._panStart).multiplyScalar(this.panSpeed),this._pan(this._panDelta.x,this._panDelta.y),this._panStart.copy(this._panEnd),this.update()}_handleMouseWheel(e){this._updateZoomParameters(e.clientX,e.clientY),e.deltaY<0?this._dollyIn(this._getZoomScale(e.deltaY)):e.deltaY>0&&this._dollyOut(this._getZoomScale(e.deltaY)),this.update()}_handleKeyDown(e){let t=!1;switch(e.code){case this.keys.UP:e.ctrlKey||e.metaKey||e.shiftKey?this.enableRotate&&this._rotateUp(Mn*this.keyRotateSpeed/this.domElement.clientHeight):this.enablePan&&this._pan(0,this.keyPanSpeed),t=!0;break;case this.keys.BOTTOM:e.ctrlKey||e.metaKey||e.shiftKey?this.enableRotate&&this._rotateUp(-Mn*this.keyRotateSpeed/this.domElement.clientHeight):this.enablePan&&this._pan(0,-this.keyPanSpeed),t=!0;break;case this.keys.LEFT:e.ctrlKey||e.metaKey||e.shiftKey?this.enableRotate&&this._rotateLeft(Mn*this.keyRotateSpeed/this.domElement.clientHeight):this.enablePan&&this._pan(this.keyPanSpeed,0),t=!0;break;case this.keys.RIGHT:e.ctrlKey||e.metaKey||e.shiftKey?this.enableRotate&&this._rotateLeft(-Mn*this.keyRotateSpeed/this.domElement.clientHeight):this.enablePan&&this._pan(-this.keyPanSpeed,0),t=!0;break}t&&(e.preventDefault(),this.update())}_handleTouchStartRotate(e){if(this._pointers.length===1)this._rotateStart.set(e.pageX,e.pageY);else{let t=this._getSecondPointerPosition(e),n=.5*(e.pageX+t.x),i=.5*(e.pageY+t.y);this._rotateStart.set(n,i)}}_handleTouchStartPan(e){if(this._pointers.length===1)this._panStart.set(e.pageX,e.pageY);else{let t=this._getSecondPointerPosition(e),n=.5*(e.pageX+t.x),i=.5*(e.pageY+t.y);this._panStart.set(n,i)}}_handleTouchStartDolly(e){let t=this._getSecondPointerPosition(e),n=e.pageX-t.x,i=e.pageY-t.y,s=Math.sqrt(n*n+i*i);this._dollyStart.set(0,s)}_handleTouchStartDollyPan(e){this.enableZoom&&this._handleTouchStartDolly(e),this.enablePan&&this._handleTouchStartPan(e)}_handleTouchStartDollyRotate(e){this.enableZoom&&this._handleTouchStartDolly(e),this.enableRotate&&this._handleTouchStartRotate(e)}_handleTouchMoveRotate(e){if(this._pointers.length==1)this._rotateEnd.set(e.pageX,e.pageY);else{let n=this._getSecondPointerPosition(e),i=.5*(e.pageX+n.x),s=.5*(e.pageY+n.y);this._rotateEnd.set(i,s)}this._rotateDelta.subVectors(this._rotateEnd,this._rotateStart).multiplyScalar(this.rotateSpeed);let t=this.domElement;this._rotateLeft(Mn*this._rotateDelta.x/t.clientHeight),this._rotateUp(Mn*this._rotateDelta.y/t.clientHeight),this._rotateStart.copy(this._rotateEnd)}_handleTouchMovePan(e){if(this._pointers.length===1)this._panEnd.set(e.pageX,e.pageY);else{let t=this._getSecondPointerPosition(e),n=.5*(e.pageX+t.x),i=.5*(e.pageY+t.y);this._panEnd.set(n,i)}this._panDelta.subVectors(this._panEnd,this._panStart).multiplyScalar(this.panSpeed),this._pan(this._panDelta.x,this._panDelta.y),this._panStart.copy(this._panEnd)}_handleTouchMoveDolly(e){let t=this._getSecondPointerPosition(e),n=e.pageX-t.x,i=e.pageY-t.y,s=Math.sqrt(n*n+i*i);this._dollyEnd.set(0,s),this._dollyDelta.set(0,Math.pow(this._dollyEnd.y/this._dollyStart.y,this.zoomSpeed)),this._dollyOut(this._dollyDelta.y),this._dollyStart.copy(this._dollyEnd);let o=(e.pageX+t.x)*.5,a=(e.pageY+t.y)*.5;this._updateZoomParameters(o,a)}_handleTouchMoveDollyPan(e){this.enableZoom&&this._handleTouchMoveDolly(e),this.enablePan&&this._handleTouchMovePan(e)}_handleTouchMoveDollyRotate(e){this.enableZoom&&this._handleTouchMoveDolly(e),this.enableRotate&&this._handleTouchMoveRotate(e)}_addPointer(e){this._pointers.push(e.pointerId)}_removePointer(e){delete this._pointerPositions[e.pointerId];for(let t=0;t<this._pointers.length;t++)if(this._pointers[t]==e.pointerId){this._pointers.splice(t,1);return}}_isTrackingPointer(e){for(let t=0;t<this._pointers.length;t++)if(this._pointers[t]==e.pointerId)return!0;return!1}_trackPointer(e){let t=this._pointerPositions[e.pointerId];t===void 0&&(t=new J,this._pointerPositions[e.pointerId]=t),t.set(e.pageX,e.pageY)}_getSecondPointerPosition(e){let t=e.pointerId===this._pointers[0]?this._pointers[1]:this._pointers[0];return this._pointerPositions[t]}_customWheelEvent(e){let t=e.deltaMode,n={clientX:e.clientX,clientY:e.clientY,deltaY:e.deltaY};switch(t){case 1:n.deltaY*=16;break;case 2:n.deltaY*=100;break}return e.ctrlKey&&!this._controlActive&&(n.deltaY*=10),n}};function ub(r){this.enabled!==!1&&(this._pointers.length===0&&(this.domElement.setPointerCapture(r.pointerId),this.domElement.ownerDocument.addEventListener("pointermove",this._onPointerMove),this.domElement.ownerDocument.addEventListener("pointerup",this._onPointerUp)),!this._isTrackingPointer(r)&&(this._addPointer(r),r.pointerType==="touch"?this._onTouchStart(r):this._onMouseDown(r),this._cursorStyle==="grab"&&(this.domElement.style.cursor="grabbing")))}function db(r){this.enabled!==!1&&(r.pointerType==="touch"?this._onTouchMove(r):this._onMouseMove(r))}function fb(r){switch(this._removePointer(r),this._pointers.length){case 0:this.domElement.releasePointerCapture(r.pointerId),this.domElement.ownerDocument.removeEventListener("pointermove",this._onPointerMove),this.domElement.ownerDocument.removeEventListener("pointerup",this._onPointerUp),this.dispatchEvent(r_),this.state=_t.NONE,this._cursorStyle==="grab"&&(this.domElement.style.cursor="grab");break;case 1:let e=this._pointers[0],t=this._pointerPositions[e];this._onTouchStart({pointerId:e,pageX:t.x,pageY:t.y});break}}function pb(r){let e;switch(r.button){case 0:e=this.mouseButtons.LEFT;break;case 1:e=this.mouseButtons.MIDDLE;break;case 2:e=this.mouseButtons.RIGHT;break;default:e=-1}switch(e){case Ui.DOLLY:if(this.enableZoom===!1)return;this._handleMouseDownDolly(r),this.state=_t.DOLLY;break;case Ui.ROTATE:if(r.ctrlKey||r.metaKey||r.shiftKey){if(this.enablePan===!1)return;this._handleMouseDownPan(r),this.state=_t.PAN}else{if(this.enableRotate===!1)return;this._handleMouseDownRotate(r),this.state=_t.ROTATE}break;case Ui.PAN:if(r.ctrlKey||r.metaKey||r.shiftKey){if(this.enableRotate===!1)return;this._handleMouseDownRotate(r),this.state=_t.ROTATE}else{if(this.enablePan===!1)return;this._handleMouseDownPan(r),this.state=_t.PAN}break;default:this.state=_t.NONE}this.state!==_t.NONE&&this.dispatchEvent(Ef)}function mb(r){switch(this.state){case _t.ROTATE:if(this.enableRotate===!1)return;this._handleMouseMoveRotate(r);break;case _t.DOLLY:if(this.enableZoom===!1)return;this._handleMouseMoveDolly(r);break;case _t.PAN:if(this.enablePan===!1)return;this._handleMouseMovePan(r);break}}function gb(r){this.enabled===!1||this.enableZoom===!1||this.state!==_t.NONE||(r.preventDefault(),this.dispatchEvent(Ef),this._handleMouseWheel(this._customWheelEvent(r)),this.dispatchEvent(r_))}function _b(r){this.enabled!==!1&&this._handleKeyDown(r)}function xb(r){switch(this._trackPointer(r),this._pointers.length){case 1:switch(this.touches.ONE){case Fi.ROTATE:if(this.enableRotate===!1)return;this._handleTouchStartRotate(r),this.state=_t.TOUCH_ROTATE;break;case Fi.PAN:if(this.enablePan===!1)return;this._handleTouchStartPan(r),this.state=_t.TOUCH_PAN;break;default:this.state=_t.NONE}break;case 2:switch(this.touches.TWO){case Fi.DOLLY_PAN:if(this.enableZoom===!1&&this.enablePan===!1)return;this._handleTouchStartDollyPan(r),this.state=_t.TOUCH_DOLLY_PAN;break;case Fi.DOLLY_ROTATE:if(this.enableZoom===!1&&this.enableRotate===!1)return;this._handleTouchStartDollyRotate(r),this.state=_t.TOUCH_DOLLY_ROTATE;break;default:this.state=_t.NONE}break;default:this.state=_t.NONE}this.state!==_t.NONE&&this.dispatchEvent(Ef)}function yb(r){switch(this._trackPointer(r),this.state){case _t.TOUCH_ROTATE:if(this.enableRotate===!1)return;this._handleTouchMoveRotate(r),this.update();break;case _t.TOUCH_PAN:if(this.enablePan===!1)return;this._handleTouchMovePan(r),this.update();break;case _t.TOUCH_DOLLY_PAN:if(this.enableZoom===!1&&this.enablePan===!1)return;this._handleTouchMoveDollyPan(r),this.update();break;case _t.TOUCH_DOLLY_ROTATE:if(this.enableZoom===!1&&this.enableRotate===!1)return;this._handleTouchMoveDollyRotate(r),this.update();break;default:this.state=_t.NONE}}function vb(r){this.enabled!==!1&&r.preventDefault()}function Mb(r){r.key==="Control"&&(this._controlActive=!0,this.domElement.getRootNode().addEventListener("keyup",this._interceptControlUp,{passive:!0,capture:!0}))}function Sb(r){r.key==="Control"&&(this._controlActive=!1,this.domElement.getRootNode().removeEventListener("keyup",this._interceptControlUp,{passive:!0,capture:!0}))}function wf(r,e){if(e===su)return console.warn("THREE.BufferGeometryUtils.toTrianglesDrawMode(): Geometry already defined as triangles."),r;if(e===js||e===po){let t=r.getIndex();if(t===null){let s=[],o=r.getAttribute("position");if(o!==void 0){for(let a=0;a<o.count;a++)s.push(a);r.setIndex(s),t=r.getIndex()}else return console.error("THREE.BufferGeometryUtils.toTrianglesDrawMode(): Undefined position attribute. 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n=0;n<r.children.length;n++)a_(r.children[n],e.children[n],t)}var fu=class extends It{constructor(e){super(e),this.dracoLoader=null,this.ktx2Loader=null,this.meshoptDecoder=null,this.pluginCallbacks=[],this.register(function(t){return new Df(t)}),this.register(function(t){return new Uf(t)}),this.register(function(t){return new Wf(t)}),this.register(function(t){return new Xf(t)}),this.register(function(t){return new qf(t)}),this.register(function(t){return new Of(t)}),this.register(function(t){return new Bf(t)}),this.register(function(t){return new zf(t)}),this.register(function(t){return new kf(t)}),this.register(function(t){return new Nf(t)}),this.register(function(t){return new Vf(t)}),this.register(function(t){return new Ff(t)}),this.register(function(t){return new Hf(t)}),this.register(function(t){return new Gf(t)}),this.register(function(t){return new Pf(t)}),this.register(function(t){return new pu(t,et.EXT_MESHOPT_COMPRESSION)}),this.register(function(t){return new pu(t,et.KHR_MESHOPT_COMPRESSION)}),this.register(function(t){return new Yf(t)})}load(e,t,n,i){let s=this,o;if(this.resourcePath!=="")o=this.resourcePath;else if(this.path!==""){let c=Fn.extractUrlBase(e);o=Fn.resolveURL(c,this.path)}else o=Fn.extractUrlBase(e);this.manager.itemStart(e);let a=function(c){i?i(c):console.error(c),s.manager.itemError(e),s.manager.itemEnd(e)},l=new kt(this.manager);l.setPath(this.path),l.setResponseType("arraybuffer"),l.setRequestHeader(this.requestHeader),l.setWithCredentials(this.withCredentials),l.load(e,function(c){try{s.parse(c,o,function(h){t(h),s.manager.itemEnd(e)},a)}catch(h){a(h)}},n,a)}setDRACOLoader(e){return this.dracoLoader=e,this}setKTX2Loader(e){return this.ktx2Loader=e,this}setMeshoptDecoder(e){return this.meshoptDecoder=e,this}register(e){return this.pluginCallbacks.indexOf(e)===-1&&this.pluginCallbacks.push(e),this}unregister(e){return this.pluginCallbacks.indexOf(e)!==-1&&this.pluginCallbacks.splice(this.pluginCallbacks.indexOf(e),1),this}parse(e,t,n,i){let s,o={},a={},l=new TextDecoder;if(typeof e=="string")s=JSON.parse(e);else if(e instanceof ArrayBuffer)if(l.decode(new Uint8Array(e,0,4))===d_){try{o[et.KHR_BINARY_GLTF]=new Zf(e)}catch(u){i&&i(u);return}s=JSON.parse(o[et.KHR_BINARY_GLTF].content)}else s=JSON.parse(l.decode(e));else s=e;if(s.asset===void 0||s.asset.version[0]<2){i&&i(new Error("THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported."));return}let c=new tp(s,{path:t||this.resourcePath||"",crossOrigin:this.crossOrigin,requestHeader:this.requestHeader,manager:this.manager,ktx2Loader:this.ktx2Loader,meshoptDecoder:this.meshoptDecoder});c.fileLoader.setRequestHeader(this.requestHeader);for(let h=0;h<this.pluginCallbacks.length;h++){let u=this.pluginCallbacks[h](c);u.name||console.error("THREE.GLTFLoader: Invalid plugin found: missing name"),a[u.name]=u,o[u.name]=!0}if(s.extensionsUsed)for(let h=0;h<s.extensionsUsed.length;++h){let u=s.extensionsUsed[h],d=s.extensionsRequired||[];switch(u){case et.KHR_MATERIALS_UNLIT:o[u]=new Lf;break;case et.KHR_DRACO_MESH_COMPRESSION:o[u]=new Kf(s,this.dracoLoader);break;case et.KHR_TEXTURE_TRANSFORM:o[u]=new Jf;break;case et.KHR_MESH_QUANTIZATION:o[u]=new jf;break;default:d.indexOf(u)>=0&&a[u]===void 0&&console.warn('THREE.GLTFLoader: Unknown extension "'+u+'".')}}c.setExtensions(o),c.setPlugins(a),c.parse(n,i)}parseAsync(e,t){let n=this;return new Promise(function(i,s){n.parse(e,t,i,s)})}};function bb(){let r={};return{get:function(e){return r[e]},add:function(e,t){r[e]=t},remove:function(e){delete r[e]},removeAll:function(){r={}}}}function Ot(r,e,t){let n=r.json.materials[e];return n.extensions&&n.extensions[t]?n.extensions[t]:null}var et={KHR_BINARY_GLTF:"KHR_binary_glTF",KHR_DRACO_MESH_COMPRESSION:"KHR_draco_mesh_compression",KHR_LIGHTS_PUNCTUAL:"KHR_lights_punctual",KHR_MATERIALS_CLEARCOAT:"KHR_materials_clearcoat",KHR_MATERIALS_DISPERSION:"KHR_materials_dispersion",KHR_MATERIALS_IOR:"KHR_materials_ior",KHR_MATERIALS_SHEEN:"KHR_materials_sheen",KHR_MATERIALS_SPECULAR:"KHR_materials_specular",KHR_MATERIALS_TRANSMISSION:"KHR_materials_transmission",KHR_MATERIALS_IRIDESCENCE:"KHR_materials_iridescence",KHR_MATERIALS_ANISOTROPY:"KHR_materials_anisotropy",KHR_MATERIALS_UNLIT:"KHR_materials_unlit",KHR_MATERIALS_VOLUME:"KHR_materials_volume",KHR_TEXTURE_BASISU:"KHR_texture_basisu",KHR_TEXTURE_TRANSFORM:"KHR_texture_transform",KHR_MESH_QUANTIZATION:"KHR_mesh_quantization",KHR_MATERIALS_EMISSIVE_STRENGTH:"KHR_materials_emissive_strength",EXT_MATERIALS_BUMP:"EXT_materials_bump",EXT_TEXTURE_WEBP:"EXT_texture_webp",EXT_TEXTURE_AVIF:"EXT_texture_avif",EXT_MESHOPT_COMPRESSION:"EXT_meshopt_compression",KHR_MESHOPT_COMPRESSION:"KHR_meshopt_compression",EXT_MESH_GPU_INSTANCING:"EXT_mesh_gpu_instancing"},Pf=class{constructor(e){this.parser=e,this.name=et.KHR_LIGHTS_PUNCTUAL,this.cache={refs:{},uses:{}}}_markDefs(){let e=this.parser,t=this.parser.json.nodes||[];for(let n=0,i=t.length;n<i;n++){let s=t[n];s.extensions&&s.extensions[this.name]&&s.extensions[this.name].light!==void 0&&e._addNodeRef(this.cache,s.extensions[this.name].light)}}_loadLight(e){let t=this.parser,n="light:"+e,i=t.cache.get(n);if(i)return i;let s=t.json,l=((s.extensions&&s.extensions[this.name]||{}).lights||[])[e],c,h=new ce(16777215);l.color!==void 0&&h.setRGB(l.color[0],l.color[1],l.color[2],nn);let u=l.range!==void 0?l.range:0;switch(l.type){case"directional":c=new Ws(h),c.target.position.set(0,0,-1),c.add(c.target);break;case"point":c=new Di(h),c.distance=u;break;case"spot":c=new Hs(h),c.distance=u,l.spot=l.spot||{},l.spot.innerConeAngle=l.spot.innerConeAngle!==void 0?l.spot.innerConeAngle:0,l.spot.outerConeAngle=l.spot.outerConeAngle!==void 0?l.spot.outerConeAngle:Math.PI/4,c.angle=l.spot.outerConeAngle,c.penumbra=1-l.spot.innerConeAngle/l.spot.outerConeAngle,c.target.position.set(0,0,-1),c.add(c.target);break;default:throw new Error("THREE.GLTFLoader: Unexpected light type: "+l.type)}return c.position.set(0,0,0),Mi(c,l),l.intensity!==void 0&&(c.intensity=l.intensity),c.name=t.createUniqueName(l.name||"light_"+e),i=Promise.resolve(c),t.cache.add(n,i),i}getDependency(e,t){if(e==="light")return this._loadLight(t)}createNodeAttachment(e){let t=this,n=this.parser,s=n.json.nodes[e],a=(s.extensions&&s.extensions[this.name]||{}).light;return a===void 0?null:this._loadLight(a).then(function(l){return n._getNodeRef(t.cache,a,l)})}},Lf=class{constructor(){this.name=et.KHR_MATERIALS_UNLIT}getMaterialType(){return Kt}extendParams(e,t,n){let i=[];e.color=new ce(1,1,1),e.opacity=1;let s=t.pbrMetallicRoughness;if(s){if(Array.isArray(s.baseColorFactor)){let o=s.baseColorFactor;e.color.setRGB(o[0],o[1],o[2],nn),e.opacity=o[3]}s.baseColorTexture!==void 0&&i.push(n.assignTexture(e,"map",s.baseColorTexture,Tt))}return Promise.all(i)}},Nf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_EMISSIVE_STRENGTH}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);return n===null||n.emissiveStrength!==void 0&&(t.emissiveIntensity=n.emissiveStrength),Promise.resolve()}},Df=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_CLEARCOAT}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];if(n.clearcoatFactor!==void 0&&(t.clearcoat=n.clearcoatFactor),n.clearcoatTexture!==void 0&&i.push(this.parser.assignTexture(t,"clearcoatMap",n.clearcoatTexture)),n.clearcoatRoughnessFactor!==void 0&&(t.clearcoatRoughness=n.clearcoatRoughnessFactor),n.clearcoatRoughnessTexture!==void 0&&i.push(this.parser.assignTexture(t,"clearcoatRoughnessMap",n.clearcoatRoughnessTexture)),n.clearcoatNormalTexture!==void 0&&(i.push(this.parser.assignTexture(t,"clearcoatNormalMap",n.clearcoatNormalTexture)),n.clearcoatNormalTexture.scale!==void 0)){let s=n.clearcoatNormalTexture.scale;t.clearcoatNormalScale=new J(s,s)}return Promise.all(i)}},Uf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_DISPERSION}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);return n===null||(t.dispersion=n.dispersion!==void 0?n.dispersion:0),Promise.resolve()}},Ff=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_IRIDESCENCE}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];return n.iridescenceFactor!==void 0&&(t.iridescence=n.iridescenceFactor),n.iridescenceTexture!==void 0&&i.push(this.parser.assignTexture(t,"iridescenceMap",n.iridescenceTexture)),n.iridescenceIor!==void 0&&(t.iridescenceIOR=n.iridescenceIor),t.iridescenceThicknessRange===void 0&&(t.iridescenceThicknessRange=[100,400]),n.iridescenceThicknessMinimum!==void 0&&(t.iridescenceThicknessRange[0]=n.iridescenceThicknessMinimum),n.iridescenceThicknessMaximum!==void 0&&(t.iridescenceThicknessRange[1]=n.iridescenceThicknessMaximum),n.iridescenceThicknessTexture!==void 0&&i.push(this.parser.assignTexture(t,"iridescenceThicknessMap",n.iridescenceThicknessTexture)),Promise.all(i)}},Of=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_SHEEN}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];if(t.sheenColor=new ce(0,0,0),t.sheenRoughness=0,t.sheen=1,n.sheenColorFactor!==void 0){let s=n.sheenColorFactor;t.sheenColor.setRGB(s[0],s[1],s[2],nn)}return n.sheenRoughnessFactor!==void 0&&(t.sheenRoughness=n.sheenRoughnessFactor),n.sheenColorTexture!==void 0&&i.push(this.parser.assignTexture(t,"sheenColorMap",n.sheenColorTexture,Tt)),n.sheenRoughnessTexture!==void 0&&i.push(this.parser.assignTexture(t,"sheenRoughnessMap",n.sheenRoughnessTexture)),Promise.all(i)}},Bf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_TRANSMISSION}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];return n.transmissionFactor!==void 0&&(t.transmission=n.transmissionFactor),n.transmissionTexture!==void 0&&i.push(this.parser.assignTexture(t,"transmissionMap",n.transmissionTexture)),Promise.all(i)}},zf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_VOLUME}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];t.thickness=n.thicknessFactor!==void 0?n.thicknessFactor:0,n.thicknessTexture!==void 0&&i.push(this.parser.assignTexture(t,"thicknessMap",n.thicknessTexture)),t.attenuationDistance=n.attenuationDistance||1/0;let s=n.attenuationColor||[1,1,1];return t.attenuationColor=new ce().setRGB(s[0],s[1],s[2],nn),Promise.all(i)}},kf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_IOR}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);return n===null||(t.ior=n.ior!==void 0?n.ior:1.5,t.ior===0&&(t.ior=1e3)),Promise.resolve()}},Vf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_SPECULAR}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];t.specularIntensity=n.specularFactor!==void 0?n.specularFactor:1,n.specularTexture!==void 0&&i.push(this.parser.assignTexture(t,"specularIntensityMap",n.specularTexture));let s=n.specularColorFactor||[1,1,1];return t.specularColor=new ce().setRGB(s[0],s[1],s[2],nn),n.specularColorTexture!==void 0&&i.push(this.parser.assignTexture(t,"specularColorMap",n.specularColorTexture,Tt)),Promise.all(i)}},Gf=class{constructor(e){this.parser=e,this.name=et.EXT_MATERIALS_BUMP}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];return t.bumpScale=n.bumpFactor!==void 0?n.bumpFactor:1,n.bumpTexture!==void 0&&i.push(this.parser.assignTexture(t,"bumpMap",n.bumpTexture)),Promise.all(i)}},Hf=class{constructor(e){this.parser=e,this.name=et.KHR_MATERIALS_ANISOTROPY}getMaterialType(e){return Ot(this.parser,e,this.name)!==null?sn:null}extendMaterialParams(e,t){let n=Ot(this.parser,e,this.name);if(n===null)return Promise.resolve();let i=[];return n.anisotropyStrength!==void 0&&(t.anisotropy=n.anisotropyStrength),n.anisotropyRotation!==void 0&&(t.anisotropyRotation=n.anisotropyRotation),n.anisotropyTexture!==void 0&&i.push(this.parser.assignTexture(t,"anisotropyMap",n.anisotropyTexture)),Promise.all(i)}},Wf=class{constructor(e){this.parser=e,this.name=et.KHR_TEXTURE_BASISU}loadTexture(e){let t=this.parser,n=t.json,i=n.textures[e];if(!i.extensions||!i.extensions[this.name])return null;let s=i.extensions[this.name],o=t.options.ktx2Loader;if(!o){if(n.extensionsRequired&&n.extensionsRequired.indexOf(this.name)>=0)throw new Error("THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures");return null}return t.loadTextureImage(e,s.source,o)}},Xf=class{constructor(e){this.parser=e,this.name=et.EXT_TEXTURE_WEBP}loadTexture(e){let t=this.name,n=this.parser,i=n.json,s=i.textures[e];if(!s.extensions||!s.extensions[t])return null;let o=s.extensions[t],a=i.images[o.source],l=n.textureLoader;if(a.uri){let c=n.options.manager.getHandler(a.uri);c!==null&&(l=c)}return n.loadTextureImage(e,o.source,l)}},qf=class{constructor(e){this.parser=e,this.name=et.EXT_TEXTURE_AVIF}loadTexture(e){let t=this.name,n=this.parser,i=n.json,s=i.textures[e];if(!s.extensions||!s.extensions[t])return null;let o=s.extensions[t],a=i.images[o.source],l=n.textureLoader;if(a.uri){let c=n.options.manager.getHandler(a.uri);c!==null&&(l=c)}return n.loadTextureImage(e,o.source,l)}},pu=class{constructor(e,t){this.name=t,this.parser=e}loadBufferView(e){let t=this.parser.json,n=t.bufferViews[e];if(n.extensions&&n.extensions[this.name]){let i=n.extensions[this.name],s=this.parser.getDependency("buffer",i.buffer),o=this.parser.options.meshoptDecoder;if(!o||!o.supported){if(t.extensionsRequired&&t.extensionsRequired.indexOf(this.name)>=0)throw new Error("THREE.GLTFLoader: setMeshoptDecoder must be called before loading compressed files");return null}return s.then(function(a){let l=i.byteOffset||0,c=i.byteLength||0,h=i.count,u=i.byteStride,d=new Uint8Array(a,l,c);return o.decodeGltfBufferAsync?o.decodeGltfBufferAsync(h,u,d,i.mode,i.filter).then(function(f){return f.buffer}):o.ready.then(function(){let f=new ArrayBuffer(h*u);return o.decodeGltfBuffer(new Uint8Array(f),h,u,d,i.mode,i.filter),f})})}else return null}},Yf=class{constructor(e){this.name=et.EXT_MESH_GPU_INSTANCING,this.parser=e}createNodeMesh(e){let t=this.parser.json,n=t.nodes[e];if(!n.extensions||!n.extensions[this.name]||n.mesh===void 0)return null;let i=t.meshes[n.mesh];for(let c of i.primitives)if(c.mode!==zn.TRIANGLES&&c.mode!==zn.TRIANGLE_STRIP&&c.mode!==zn.TRIANGLE_FAN&&c.mode!==void 0)return null;let o=n.extensions[this.name].attributes,a=[],l={};for(let c in o)a.push(this.parser.getDependency("accessor",o[c]).then(h=>(l[c]=h,l[c])));return a.length<1?null:(a.push(this.parser.createNodeMesh(e)),Promise.all(a).then(c=>{let h=c.pop(),u=h.isGroup?h.children:[h],d=c[0].count,f=[];for(let p of u){let _=new ze,g=new R,m=new wt,y=new R(1,1,1),b=new Ii(p.geometry,p.material,d);for(let T=0;T<d;T++)l.TRANSLATION&&g.fromBufferAttribute(l.TRANSLATION,T),l.ROTATION&&m.fromBufferAttribute(l.ROTATION,T),l.SCALE&&y.fromBufferAttribute(l.SCALE,T),b.setMatrixAt(T,_.compose(g,m,y));let x=null;for(let T in l)if(T==="_COLOR_0"){let S=l[T];b.instanceColor=new An(S.array,S.itemSize,S.normalized)}else if(T!=="TRANSLATION"&&T!=="ROTATION"&&T!=="SCALE"){if(x===null){let w=b.geometry;x=new Oe,x.name=w.name;for(let v in w.attributes)x.setAttribute(v,w.attributes[v]);for(let v in w.morphAttributes)x.morphAttributes[v]=w.morphAttributes[v];w.index!==null&&x.setIndex(w.index),x.morphTargetsRelative=w.morphTargetsRelative;for(let v of w.groups)x.addGroup(v.start,v.count,v.materialIndex);w.boundingBox!==null&&(x.boundingBox=w.boundingBox.clone()),w.boundingSphere!==null&&(x.boundingSphere=w.boundingSphere.clone()),x.drawRange.start=w.drawRange.start,x.drawRange.count=w.drawRange.count,x.userData=Object.assign({},w.userData),b.geometry=x}let S=l[T];x.setAttribute(T,new An(S.array,S.itemSize,S.normalized))}st.prototype.copy.call(b,p),this.parser.assignFinalMaterial(b),f.push(b)}return h.isGroup?(h.clear(),h.add(...f),h):f[0]}))}},d_="glTF",Vl=12,l_={JSON:1313821514,BIN:5130562},Zf=class{constructor(e){this.name=et.KHR_BINARY_GLTF,this.content=null,this.body=null;let t=new DataView(e,0,Vl),n=new TextDecoder;if(this.header={magic:n.decode(new Uint8Array(e.slice(0,4))),version:t.getUint32(4,!0),length:t.getUint32(8,!0)},this.header.magic!==d_)throw new Error("THREE.GLTFLoader: Unsupported glTF-Binary header.");if(this.header.version<2)throw new Error("THREE.GLTFLoader: Legacy binary file detected.");let i=this.header.length-Vl,s=new DataView(e,Vl),o=0;for(;o<i;){let a=s.getUint32(o,!0);o+=4;let l=s.getUint32(o,!0);if(o+=4,l===l_.JSON){let c=new Uint8Array(e,Vl+o,a);this.content=n.decode(c)}else if(l===l_.BIN){let c=Vl+o;this.body=e.slice(c,c+a)}o+=a}if(this.content===null)throw new Error("THREE.GLTFLoader: JSON content not found.")}},Kf=class{constructor(e,t){if(!t)throw new Error("THREE.GLTFLoader: No DRACOLoader instance provided.");this.name=et.KHR_DRACO_MESH_COMPRESSION,this.json=e,this.dracoLoader=t,this.dracoLoader.preload()}decodePrimitive(e,t){let n=this.json,i=this.dracoLoader,s=e.extensions[this.name].bufferView,o=e.extensions[this.name].attributes,a={},l={},c={};for(let h in o){let u=Qf[h]||h.toLowerCase();a[u]=o[h]}for(let h in e.attributes){let u=Qf[h]||h.toLowerCase();if(o[h]!==void 0){let d=n.accessors[e.attributes[h]],f=vo[d.componentType];c[u]=f.name,l[u]=d.normalized===!0}}return t.getDependency("bufferView",s).then(function(h){return new Promise(function(u,d){i.decodeDracoFile(h,function(f){for(let p in f.attributes){let _=f.attributes[p],g=l[p];g!==void 0&&(_.normalized=g)}u(f)},a,c,nn,d)})})}},Jf=class{constructor(){this.name=et.KHR_TEXTURE_TRANSFORM}extendTexture(e,t){if((t.texCoord===void 0||t.texCoord===e.channel)&&t.offset===void 0&&t.rotation===void 0&&t.scale===void 0)return e;if(e=e.clone(),t.texCoord!==void 0&&(e.channel=t.texCoord),t.offset!==void 0&&e.offset.fromArray(t.offset),t.rotation!==void 0&&(e.rotation=t.rotation),t.scale!==void 0&&e.repeat.fromArray(t.scale),t.rotation!==void 0){let n=Math.cos(e.rotation),i=Math.sin(e.rotation);e.matrix.set(e.repeat.x*n,e.repeat.y*i,e.offset.x,-e.repeat.x*i,e.repeat.y*n,e.offset.y,0,0,1),e.matrixAutoUpdate=!1}return e.needsUpdate=!0,e}},jf=class{constructor(){this.name=et.KHR_MESH_QUANTIZATION}},mu=class extends $n{constructor(e,t,n,i){super(e,t,n,i)}copySampleValue_(e){let t=this.resultBuffer,n=this.sampleValues,i=this.valueSize,s=e*i*3+i;for(let o=0;o!==i;o++)t[o]=n[s+o];return t}interpolate_(e,t,n,i){let s=this.resultBuffer,o=this.sampleValues,a=this.valueSize,l=a*2,c=a*3,h=i-t,u=(n-t)/h,d=u*u,f=d*u,p=e*c,_=p-c,g=-2*f+3*d,m=f-d,y=1-g,b=m-d+u;for(let x=0;x!==a;x++){let T=o[_+x+a],S=o[_+x+l]*h,w=o[p+x+a],v=o[p+x]*h;s[x]=y*T+b*S+g*w+m*v}return s}},Tb=new wt,$f=class extends mu{interpolate_(e,t,n,i){let s=super.interpolate_(e,t,n,i);return Tb.fromArray(s).normalize().toArray(s),s}},zn={FLOAT:5126,FLOAT_MAT3:35675,FLOAT_MAT4:35676,FLOAT_VEC2:35664,FLOAT_VEC3:35665,FLOAT_VEC4:35666,LINEAR:9729,REPEAT:10497,SAMPLER_2D:35678,POINTS:0,LINES:1,LINE_LOOP:2,LINE_STRIP:3,TRIANGLES:4,TRIANGLE_STRIP:5,TRIANGLE_FAN:6,UNSIGNED_BYTE:5121,UNSIGNED_SHORT:5123},vo={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},c_={9728:At,9729:pt,9984:ro,9985:cs,9986:Bi,9987:vn},h_={33071:Yt,33648:$i,10497:li},Rf={SCALAR:1,VEC2:2,VEC3:3,VEC4:4,MAT2:4,MAT3:9,MAT4:16},Qf={POSITION:"position",NORMAL:"normal",TANGENT:"tangent",TEXCOORD_0:"uv",TEXCOORD_1:"uv1",TEXCOORD_2:"uv2",TEXCOORD_3:"uv3",COLOR_0:"color",WEIGHTS_0:"skinWeight",JOINTS_0:"skinIndex"},hs={scale:"scale",translation:"position",rotation:"quaternion",weights:"morphTargetInfluences"},Ab={CUBICSPLINE:void 0,LINEAR:es,STEP:Qi},Cf={OPAQUE:"OPAQUE",MASK:"MASK",BLEND:"BLEND"};function Eb(r){return r.DefaultMaterial===void 0&&(r.DefaultMaterial=new Un({color:16777215,emissive:0,metalness:1,roughness:1,transparent:!1,depthTest:!0,side:ei})),r.DefaultMaterial}function er(r,e,t){for(let n in t.extensions)r[n]===void 0&&(e.userData.gltfExtensions=e.userData.gltfExtensions||{},e.userData.gltfExtensions[n]=t.extensions[n])}function Mi(r,e){e.extras!==void 0&&(typeof e.extras=="object"?Object.assign(r.userData,e.extras):console.warn("THREE.GLTFLoader: Ignoring primitive type .extras, "+e.extras))}function wb(r,e,t){let n=!1,i=!1,s=!1;for(let c=0,h=e.length;c<h;c++){let u=e[c];if(u.POSITION!==void 0&&(n=!0),u.NORMAL!==void 0&&(i=!0),u.COLOR_0!==void 0&&(s=!0),n&&i&&s)break}if(!n&&!i&&!s)return Promise.resolve(r);let o=[],a=[],l=[];for(let c=0,h=e.length;c<h;c++){let u=e[c];if(n){let d=u.POSITION!==void 0?t.getDependency("accessor",u.POSITION):r.attributes.position;o.push(d)}if(i){let d=u.NORMAL!==void 0?t.getDependency("accessor",u.NORMAL):r.attributes.normal;a.push(d)}if(s){let d=u.COLOR_0!==void 0?t.getDependency("accessor",u.COLOR_0):r.attributes.color;l.push(d)}}return Promise.all([Promise.all(o),Promise.all(a),Promise.all(l)]).then(function(c){let h=c[0],u=c[1],d=c[2];return n&&(r.morphAttributes.position=h),i&&(r.morphAttributes.normal=u),s&&(r.morphAttributes.color=d),r.morphTargetsRelative=!0,r})}function Rb(r,e){if(r.updateMorphTargets(),e.weights!==void 0)for(let t=0,n=e.weights.length;t<n;t++)r.morphTargetInfluences[t]=e.weights[t];if(e.extras&&Array.isArray(e.extras.targetNames)){let t=e.extras.targetNames;if(r.morphTargetInfluences.length===t.length){r.morphTargetDictionary={};for(let n=0,i=t.length;n<i;n++)r.morphTargetDictionary[t[n]]=n}else console.warn("THREE.GLTFLoader: Invalid extras.targetNames length. 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ze,tp=class{constructor(e={},t={}){this.json=e,this.extensions={},this.plugins={},this.options=t,this.cache=new bb,this.associations=new Map,this.primitiveCache={},this.nodeCache={},this.meshCache={refs:{},uses:{}},this.cameraCache={refs:{},uses:{}},this.lightCache={refs:{},uses:{}},this.sourceCache={},this.textureCache={},this.nodeNamesUsed={};let n=!1,i=-1,s=!1,o=-1;if(typeof navigator<"u"&&typeof navigator.userAgent<"u"){let a=navigator.userAgent;n=/^((?!chrome|android).)*safari/i.test(a)===!0;let l=a.match(/Version\/(\d+)/);i=n&&l?parseInt(l[1],10):-1,s=a.indexOf("Firefox")>-1,o=s?a.match(/Firefox\/([0-9]+)\./)[1]:-1}typeof createImageBitmap>"u"||n&&i<17||s&&o<98?this.textureLoader=new Jr(this.options.manager):this.textureLoader=new $r(this.options.manager),this.textureLoader.setCrossOrigin(this.options.crossOrigin),this.textureLoader.setRequestHeader(this.options.requestHeader),this.fileLoader=new kt(this.options.manager),this.fileLoader.setResponseType("arraybuffer"),this.options.crossOrigin==="use-credentials"&&this.fileLoader.setWithCredentials(!0)}setExtensions(e){this.extensions=e}setPlugins(e){this.plugins=e}parse(e,t){let n=this,i=this.json,s=this.extensions;this.cache.removeAll(),this.nodeCache={},this._invokeAll(function(o){return o._markDefs&&o._markDefs()}),Promise.all(this._invokeAll(function(o){return o.beforeRoot&&o.beforeRoot()})).then(function(){return Promise.all([n.getDependencies("scene"),n.getDependencies("animation"),n.getDependencies("camera")])}).then(function(o){let a={scene:o[0][i.scene||0],scenes:o[0],animations:o[1],cameras:o[2],asset:i.asset,parser:n,userData:{}};return er(s,a,i),Mi(a,i),Promise.all(n._invokeAll(function(l){return l.afterRoot&&l.afterRoot(a)})).then(function(){for(let l of a.scenes)l.updateMatrixWorld();e(a)})}).catch(t)}_markDefs(){let e=this.json.nodes||[],t=this.json.skins||[],n=this.json.meshes||[];for(let i=0,s=t.length;i<s;i++){let o=t[i].joints;for(let a=0,l=o.length;a<l;a++)e[o[a]].isBone=!0}for(let i=0,s=e.length;i<s;i++){let o=e[i];o.mesh!==void 0&&(this._addNodeRef(this.meshCache,o.mesh),o.skin!==void 0&&(n[o.mesh].isSkinnedMesh=!0)),o.camera!==void 0&&this._addNodeRef(this.cameraCache,o.camera)}}_addNodeRef(e,t){t!==void 0&&(e.refs[t]===void 0&&(e.refs[t]=e.uses[t]=0),e.refs[t]++)}_getNodeRef(e,t,n){if(e.refs[t]<=1)return n;let i=n.clone(),s=(o,a)=>{let l=this.associations.get(o);l!=null&&this.associations.set(a,l);for(let[c,h]of o.children.entries())s(h,a.children[c])};return s(n,i),i.name+="_instance_"+e.uses[t]++,i}_invokeOne(e){let t=Object.values(this.plugins);t.push(this);for(let n=0;n<t.length;n++){let i=e(t[n]);if(i)return i}return null}_invokeAll(e){let t=Object.values(this.plugins);t.unshift(this);let n=[];for(let i=0;i<t.length;i++){let s=e(t[i]);s&&n.push(s)}return n}getDependency(e,t){let n=e+":"+t,i=this.cache.get(n);if(!i){switch(e){case"scene":i=this.loadScene(t);break;case"node":i=this._invokeOne(function(s){return s.loadNode&&s.loadNode(t)});break;case"mesh":i=this._invokeOne(function(s){return s.loadMesh&&s.loadMesh(t)});break;case"accessor":i=this.loadAccessor(t);break;case"bufferView":i=this._invokeOne(function(s){return s.loadBufferView&&s.loadBufferView(t)});break;case"buffer":i=this.loadBuffer(t);break;case"material":i=this._invokeOne(function(s){return s.loadMaterial&&s.loadMaterial(t)});break;case"texture":i=this._invokeOne(function(s){return s.loadTexture&&s.loadTexture(t)});break;case"skin":i=this.loadSkin(t);break;case"animation":i=this._invokeOne(function(s){return s.loadAnimation&&s.loadAnimation(t)});break;case"camera":i=this.loadCamera(t);break;default:if(i=this._invokeOne(function(s){return s!=this&&s.getDependency&&s.getDependency(e,t)}),!i)throw new Error("Unknown type: "+e);break}this.cache.add(n,i)}return i}getDependencies(e){let t=this.cache.get(e);if(!t){let n=this,i=this.json[e+(e==="mesh"?"es":"s")]||[];t=Promise.all(i.map(function(s,o){return n.getDependency(e,o)})),this.cache.add(e,t)}return t}loadBuffer(e){let t=this.json.buffers[e],n=this.fileLoader;if(t.type&&t.type!=="arraybuffer")throw new Error("THREE.GLTFLoader: "+t.type+" buffer type is not supported.");if(t.uri===void 0&&e===0)return Promise.resolve(this.extensions[et.KHR_BINARY_GLTF].body);let i=this.options;return new Promise(function(s,o){n.load(Fn.resolveURL(t.uri,i.path),s,void 0,function(){o(new Error('THREE.GLTFLoader: Failed to load buffer "'+t.uri+'".'))})})}loadBufferView(e){let t=this.json.bufferViews[e];return this.getDependency("buffer",t.buffer).then(function(n){let i=t.byteLength||0,s=t.byteOffset||0;return n.slice(s,s+i)})}loadAccessor(e){let t=this,n=this.json,i=this.json.accessors[e];if(i.bufferView===void 0&&i.sparse===void 0){let o=Rf[i.type],a=vo[i.componentType],l=i.normalized===!0,c=new a(i.count*o);return 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c(o[2],x,i.sparse.count*l);a!==null&&(g=new Qe(g.array.slice(),g.itemSize,g.normalized)),g.normalized=!1;for(let w=0,v=T.length;w<v;w++){let E=T[w];if(g.setX(E,S[w*l]),l>=2&&g.setY(E,S[w*l+1]),l>=3&&g.setZ(E,S[w*l+2]),l>=4&&g.setW(E,S[w*l+3]),l>=5)throw new Error("THREE.GLTFLoader: Unsupported itemSize in sparse BufferAttribute.")}g.normalized=p}return g})}loadTexture(e){let t=this.json,n=this.options,s=t.textures[e].source,o=t.images[s],a=this.textureLoader;if(o.uri){let l=n.manager.getHandler(o.uri);l!==null&&(a=l)}return this.loadTextureImage(e,s,a)}loadTextureImage(e,t,n){let i=this,s=this.json,o=s.textures[e],a=s.images[t],l=(a.uri||a.bufferView)+":"+o.sampler;if(this.textureCache[l])return this.textureCache[l];let c=this.loadImageSource(t,n).then(function(h){h.flipY=!1,h.name=o.name||a.name||"",h.name===""&&typeof a.uri=="string"&&a.uri.startsWith("data:image/")===!1&&(h.name=a.uri);let d=(s.samplers||{})[o.sampler]||{};return h.magFilter=c_[d.magFilter]||pt,h.minFilter=c_[d.minFilter]||vn,h.wrapS=h_[d.wrapS]||li,h.wrapT=h_[d.wrapT]||li,h.generateMipmaps=!h.isCompressedTexture&&h.minFilter!==At&&h.minFilter!==pt,i.associations.set(h,{textures:e}),h}).catch(function(){return null});return this.textureCache[l]=c,c}loadImageSource(e,t){let n=this,i=this.json,s=this.options;if(this.sourceCache[e]!==void 0)return this.sourceCache[e].then(u=>u.clone());let o=i.images[e],a=self.URL||self.webkitURL,l=o.uri||"",c=!1;if(o.bufferView!==void 0)l=n.getDependency("bufferView",o.bufferView).then(function(u){c=!0;let d=new Blob([u],{type:o.mimeType});return l=a.createObjectURL(d),l});else if(o.uri===void 0)throw new Error("THREE.GLTFLoader: Image "+e+" is missing URI and bufferView");let h=Promise.resolve(l).then(function(u){return new Promise(function(d,f){let p=d;t.isImageBitmapLoader===!0&&(p=function(_){let g=new Et(_);g.needsUpdate=!0,d(g)}),t.load(Fn.resolveURL(u,s.path),p,void 0,f)})}).then(function(u){return c===!0&&a.revokeObjectURL(l),Mi(u,o),u.userData.mimeType=o.mimeType||Ib(o.uri),u}).catch(function(u){throw console.error("THREE.GLTFLoader: Couldn't load texture",l),u});return this.sourceCache[e]=h,h}assignTexture(e,t,n,i){let s=this;return this.getDependency("texture",n.index).then(function(o){if(!o)return null;if(n.texCoord!==void 0&&n.texCoord>0&&(o=o.clone(),o.channel=n.texCoord),s.extensions[et.KHR_TEXTURE_TRANSFORM]){let a=n.extensions!==void 0?n.extensions[et.KHR_TEXTURE_TRANSFORM]:void 0;if(a){let l=s.associations.get(o);o=s.extensions[et.KHR_TEXTURE_TRANSFORM].extendTexture(o,a),s.associations.set(o,l)}}return i!==void 0&&(o.colorSpace=i),e[t]=o,o})}assignFinalMaterial(e){let t=e.geometry,n=e.material,i=t.attributes.tangent===void 0,s=t.attributes.color!==void 0,o=t.attributes.normal===void 0;if(e.isPoints){let a="PointsMaterial:"+n.uuid,l=this.cache.get(a);l||(l=new wn,vt.prototype.copy.call(l,n),l.color.copy(n.color),l.map=n.map,l.sizeAttenuation=!1,this.cache.add(a,l)),n=l}else if(e.isLine){let a="LineBasicMaterial:"+n.uuid,l=this.cache.get(a);l||(l=new Rt,vt.prototype.copy.call(l,n),l.color.copy(n.color),l.map=n.map,this.cache.add(a,l)),n=l}if(i||s||o){let a="ClonedMaterial:"+n.uuid+":";i&&(a+="derivative-tangents:"),s&&(a+="vertex-colors:"),o&&(a+="flat-shading:");let l=this.cache.get(a);l||(l=n.clone(),s&&(l.vertexColors=!0),o&&(l.flatShading=!0),i&&(l.normalScale&&(l.normalScale.y*=-1),l.clearcoatNormalScale&&(l.clearcoatNormalScale.y*=-1)),this.cache.add(a,l),this.associations.set(l,this.associations.get(n))),n=l}e.material=n}getMaterialType(){return Un}loadMaterial(e){let t=this,n=this.json,i=this.extensions,s=n.materials[e],o,a={},l=s.extensions||{},c=[];if(l[et.KHR_MATERIALS_UNLIT]){let u=i[et.KHR_MATERIALS_UNLIT];o=u.getMaterialType(),c.push(u.extendParams(a,s,t))}else{let u=s.pbrMetallicRoughness||{};if(a.color=new ce(1,1,1),a.opacity=1,Array.isArray(u.baseColorFactor)){let d=u.baseColorFactor;a.color.setRGB(d[0],d[1],d[2],nn),a.opacity=d[3]}u.baseColorTexture!==void 0&&c.push(t.assignTexture(a,"map",u.baseColorTexture,Tt)),a.metalness=u.metallicFactor!==void 0?u.metallicFactor:1,a.roughness=u.roughnessFactor!==void 0?u.roughnessFactor:1,u.metallicRoughnessTexture!==void 0&&(c.push(t.assignTexture(a,"metalnessMap",u.metallicRoughnessTexture)),c.push(t.assignTexture(a,"roughnessMap",u.metallicRoughnessTexture))),o=this._invokeOne(function(d){return d.getMaterialType&&d.getMaterialType(e)}),c.push(Promise.all(this._invokeAll(function(d){return d.extendMaterialParams&&d.extendMaterialParams(e,a)})))}s.doubleSided===!0&&(a.side=Rn);let h=s.alphaMode||Cf.OPAQUE;if(h===Cf.BLEND?(a.transparent=!0,a.depthWrite=!1):(a.transparent=!1,h===Cf.MASK&&(a.alphaTest=s.alphaCutoff!==void 0?s.alphaCutoff:.5)),s.normalTexture!==void 0&&o!==Kt&&(c.push(t.assignTexture(a,"normalMap",s.normalTexture)),a.normalScale=new J(1,1),s.normalTexture.scale!==void 0)){let u=s.normalTexture.scale;a.normalScale.set(u,u)}if(s.occlusionTexture!==void 0&&o!==Kt&&(c.push(t.assignTexture(a,"aoMap",s.occlusionTexture)),s.occlusionTexture.strength!==void 0&&(a.aoMapIntensity=s.occlusionTexture.strength)),s.emissiveFactor!==void 0&&o!==Kt){let u=s.emissiveFactor;a.emissive=new ce().setRGB(u[0],u[1],u[2],nn)}return s.emissiveTexture!==void 0&&o!==Kt&&c.push(t.assignTexture(a,"emissiveMap",s.emissiveTexture,Tt)),Promise.all(c).then(function(){let u=new o(a);return s.name&&(u.name=s.name),Mi(u,s),t.associations.set(u,{materials:e}),s.extensions&&er(i,u,s),u})}createUniqueName(e){let t=lt.sanitizeNodeName(e||"");return t in this.nodeNamesUsed?t+"_"+ ++this.nodeNamesUsed[t]:(this.nodeNamesUsed[t]=0,t)}loadGeometries(e){let t=this,n=this.extensions,i=this.primitiveCache;function s(a){return n[et.KHR_DRACO_MESH_COMPRESSION].decodePrimitive(a,t).then(function(l){return u_(l,a,t)})}let o=[];for(let a=0,l=e.length;a<l;a++){let c=e[a],h=Cb(c),u=i[h];if(u)o.push(u.promise);else{let d;c.extensions&&c.extensions[et.KHR_DRACO_MESH_COMPRESSION]?d=s(c):d=u_(new Oe,c,t),c.mode===zn.TRIANGLE_STRIP?d=d.then(f=>wf(f,po)):c.mode===zn.TRIANGLE_FAN&&(d=d.then(f=>wf(f,js))),i[h]={primitive:c,promise:d},o.push(d)}}return Promise.all(o)}loadMesh(e){let t=this,n=this.json,i=this.extensions,s=n.meshes[e],o=s.primitives,a=[];for(let l=0,c=o.length;l<c;l++){let h=o[l].material===void 0?Eb(this.cache):this.getDependency("material",o[l].material);a.push(h)}return a.push(t.loadGeometries(o)),Promise.all(a).then(async function(l){let c=l.slice(0,l.length-1),h=l[l.length-1],u=[];for(let f=0,p=h.length;f<p;f++){let _=h[f],g=o[f],m,y=c[f];if(g.mode===zn.TRIANGLES||g.mode===zn.TRIANGLE_STRIP||g.mode===zn.TRIANGLE_FAN||g.mode===void 0){let b=s.isSkinnedMesh===!0,x=_.hasAttribute("skinIndex")&&_.hasAttribute("skinWeight");b&&x===!1&&console.warn("THREE.GLTFLoader: Missing skinIndex or skinWeight attributes. Skinning disabled."),m=b&&x?new Ls(_,y):new rt(_,y),m.isSkinnedMesh===!0&&m.normalizeSkinWeights()}else if(g.mode===zn.LINES)m=new Xt(_,y);else if(g.mode===zn.LINE_STRIP)m=new En(_,y);else if(g.mode===zn.LINE_LOOP)m=new Ds(_,y);else if(g.mode===zn.POINTS)m=new jn(_,y);else throw new Error("THREE.GLTFLoader: Primitive mode unsupported: "+g.mode);Object.keys(m.geometry.morphAttributes).length>0&&Rb(m,s),m.name=t.createUniqueName(s.name||"mesh_"+e),Mi(m,s),g.extensions&&er(i,m,g),t.assignFinalMaterial(m),u.push(m)}for(let f=0,p=u.length;f<p;f++)t.associations.set(u[f],{meshes:e,primitives:f});if(u.length===1)return s.extensions&&er(i,u[0],s),u[0];let d=new cn;s.extensions&&er(i,d,s),t.associations.set(d,{meshes:e});for(let f=0,p=u.length;f<p;f++)d.add(u[f]);return d})}loadCamera(e){let t,n=this.json.cameras[e],i=n[n.type];if(!i){console.warn("THREE.GLTFLoader: Missing camera parameters.");return}return n.type==="perspective"?t=new Lt(mo.radToDeg(i.yfov),i.aspectRatio||1,i.znear||1,i.zfar||2e6):n.type==="orthographic"&&(t=new _i(-i.xmag,i.xmag,i.ymag,-i.ymag,i.znear,i.zfar)),n.name&&(t.name=this.createUniqueName(n.name)),Mi(t,n),Promise.resolve(t)}loadSkin(e){let t=this.json.skins[e],n=[];for(let i=0,s=t.joints.length;i<s;i++)n.push(this._loadNodeShallow(t.joints[i]));return t.inverseBindMatrices!==void 0?n.push(this.getDependency("accessor",t.inverseBindMatrices)):n.push(null),Promise.all(n).then(function(i){let s=i.pop(),o=i,a=[],l=[];for(let c=0,h=o.length;c<h;c++){let u=o[c];if(u){a.push(u);let d=new ze;s!==null&&d.fromArray(s.array,c*16),l.push(d)}else console.warn('THREE.GLTFLoader: Joint "%s" could not be found.',t.joints[c])}return new Ns(a,l)})}loadAnimation(e){let t=this.json,n=this,i=t.animations[e],s=i.name?i.name:"animation_"+e,o=[],a=[],l=[],c=[],h=[];for(let u=0,d=i.channels.length;u<d;u++){let f=i.channels[u],p=i.samplers[f.sampler],_=f.target,g=_.node,m=i.parameters!==void 0?i.parameters[p.input]:p.input,y=i.parameters!==void 0?i.parameters[p.output]:p.output;_.node!==void 0&&(o.push(this.getDependency("node",g)),a.push(this.getDependency("accessor",m)),l.push(this.getDependency("accessor",y)),c.push(p),h.push(_))}return Promise.all([Promise.all(o),Promise.all(a),Promise.all(l),Promise.all(c),Promise.all(h)]).then(function(u){let d=u[0],f=u[1],p=u[2],_=u[3],g=u[4],m=[];for(let b=0,x=d.length;b<x;b++){let T=d[b],S=f[b],w=p[b],v=_[b],E=g[b];if(T===void 0)continue;T.updateMatrix&&T.updateMatrix();let I=n._createAnimationTracks(T,S,w,v,E);if(I)for(let P=0;P<I.length;P++)m.push(I[P])}let y=new gi(s,void 0,m);return Mi(y,i),y})}createNodeMesh(e){let t=this.json,n=this,i=t.nodes[e];return i.mesh===void 0?null:n.getDependency("mesh",i.mesh).then(function(s){let o=n._getNodeRef(n.meshCache,i.mesh,s);return i.weights!==void 0&&o.traverse(function(a){if(a.isMesh)for(let l=0,c=i.weights.length;l<c;l++)a.morphTargetInfluences[l]=i.weights[l]}),o})}loadNode(e){let t=this.json,n=this,i=t.nodes[e],s=n._loadNodeShallow(e),o=[],a=i.children||[];for(let c=0,h=a.length;c<h;c++)o.push(n.getDependency("node",a[c]));let l=i.skin===void 0?Promise.resolve(null):n.getDependency("skin",i.skin);return Promise.all([s,Promise.all(o),l]).then(function(c){let h=c[0],u=c[1],d=c[2];d!==null&&h.traverse(function(f){f.isSkinnedMesh&&f.bind(d,Pb)});for(let f=0,p=u.length;f<p;f++)h.add(u[f]);if(h.userData.pivot!==void 0&&u.length>0){let f=h.userData.pivot,p=u[0];h.pivot=new R().fromArray(f),h.position.x-=f[0],h.position.y-=f[1],h.position.z-=f[2],p.position.set(0,0,0),delete h.userData.pivot}return h})}_loadNodeShallow(e){let t=this.json,n=this.extensions,i=this;if(this.nodeCache[e]!==void 0)return this.nodeCache[e];let s=t.nodes[e],o=s.name?i.createUniqueName(s.name):"",a=[],l=i._invokeOne(function(c){return c.createNodeMesh&&c.createNodeMesh(e)});return l&&a.push(l),s.camera!==void 0&&a.push(i.getDependency("camera",s.camera).then(function(c){return i._getNodeRef(i.cameraCache,s.camera,c)})),i._invokeAll(function(c){return c.createNodeAttachment&&c.createNodeAttachment(e)}).forEach(function(c){a.push(c)}),this.nodeCache[e]=Promise.all(a).then(function(c){let h;if(s.isBone===!0?h=new is:c.length>1?h=new cn:c.length===1?h=c[0]:h=new st,h!==c[0])for(let u=0,d=c.length;u<d;u++)h.add(c[u]);if(s.name&&(h.userData.name=s.name,h.name=o),Mi(h,s),s.extensions&&er(n,h,s),s.matrix!==void 0){let u=new ze;u.fromArray(s.matrix),h.applyMatrix4(u)}else s.translation!==void 0&&h.position.fromArray(s.translation),s.rotation!==void 0&&h.quaternion.fromArray(s.rotation),s.scale!==void 0&&h.scale.fromArray(s.scale);if(!i.associations.has(h))i.associations.set(h,{});else if(s.mesh!==void 0&&i.meshCache.refs[s.mesh]>1){let u=i.associations.get(h);i.associations.set(h,{...u})}return i.associations.get(h).nodes=e,h}),this.nodeCache[e]}loadScene(e){let t=this.extensions,n=this.json.scenes[e],i=this,s=new cn;n.name&&(s.name=i.createUniqueName(n.name)),Mi(s,n),n.extensions&&er(t,s,n);let o=n.nodes||[],a=[];for(let l=0,c=o.length;l<c;l++)a.push(i.getDependency("node",o[l]));return Promise.all(a).then(function(l){for(let h=0,u=l.length;h<u;h++){let d=l[h];d.parent!==null?s.add(o_(d)):s.add(d)}let c=h=>{let u=new Map;for(let[d,f]of i.associations)(d instanceof vt||d instanceof Et)&&u.set(d,f);return h.traverse(d=>{let f=i.associations.get(d);f!=null&&u.set(d,f)}),u};return i.associations=c(s),s})}_createAnimationTracks(e,t,n,i,s){let o=[],a=e.name?e.name:e.uuid,l=[];function c(f){f.morphTargetInfluences&&l.push(f.name?f.name:f.uuid)}hs[s.path]===hs.weights?(c(e),e.isGroup&&e.children.forEach(c)):l.push(a);let h;switch(hs[s.path]){case hs.weights:h=fi;break;case hs.rotation:h=pi;break;case hs.translation:case hs.scale:h=Ni;break;default:n.itemSize===1?h=fi:h=Ni;break}let u=i.interpolation!==void 0?Ab[i.interpolation]:es,d=this._getArrayFromAccessor(n);for(let f=0,p=l.length;f<p;f++){let _=new h(l[f]+"."+hs[s.path],t.array,d,u);i.interpolation==="CUBICSPLINE"&&this._createCubicSplineTrackInterpolant(_),o.push(_)}return o}_getArrayFromAccessor(e){let t=e.array;if(e.normalized){let n=ep(t.constructor),i=new Float32Array(t.length);for(let s=0,o=t.length;s<o;s++)i[s]=t[s]*n;t=i}return t}_createCubicSplineTrackInterpolant(e){e.createInterpolant=function(n){let i=this instanceof pi?$f:mu;return new i(this.times,this.values,this.getValueSize()/3,n)},e.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline=!0}};function Lb(r,e,t){let n=e.attributes,i=new Ft;if(n.POSITION!==void 0){let a=t.json.accessors[n.POSITION],l=a.min,c=a.max;if(l!==void 0&&c!==void 0){if(i.set(new R(l[0],l[1],l[2]),new R(c[0],c[1],c[2])),a.normalized){let h=ep(vo[a.componentType]);i.min.multiplyScalar(h),i.max.multiplyScalar(h)}}else{console.warn("THREE.GLTFLoader: Missing min/max properties for accessor POSITION.");return}}else return;let s=e.targets;if(s!==void 0){let a=new R,l=new R;for(let c=0,h=s.length;c<h;c++){let u=s[c];if(u.POSITION!==void 0){let d=t.json.accessors[u.POSITION],f=d.min,p=d.max;if(f!==void 0&&p!==void 0){if(l.setX(Math.max(Math.abs(f[0]),Math.abs(p[0]))),l.setY(Math.max(Math.abs(f[1]),Math.abs(p[1]))),l.setZ(Math.max(Math.abs(f[2]),Math.abs(p[2]))),d.normalized){let _=ep(vo[d.componentType]);l.multiplyScalar(_)}a.max(l)}else console.warn("THREE.GLTFLoader: Missing min/max properties for accessor POSITION.")}}i.expandByVector(a)}r.boundingBox=i;let o=new Nt;i.getCenter(o.center),o.radius=i.min.distanceTo(i.max)/2,r.boundingSphere=o}function u_(r,e,t){let n=e.attributes,i=[];function s(o,a){return t.getDependency("accessor",o).then(function(l){r.setAttribute(a,l)})}for(let o in n){let a=Qf[o]||o.toLowerCase();a in r.attributes||i.push(s(n[o],a))}if(e.indices!==void 0&&!r.index){let o=t.getDependency("accessor",e.indices).then(function(a){r.setIndex(a)});i.push(o)}return Je.workingColorSpace!==nn&&"COLOR_0"in n&&console.warn(`THREE.GLTFLoader: Converting 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i=n.clone(0);i.inherited=!0,this.object.materials.push(i)}this.objects.push(this.object)},finalize:function(){this.object&&typeof this.object._finalize=="function"&&this.object._finalize(!0)},parseVertexIndex:function(e,t){let n=parseInt(e,10);return(n>=0?n-1:n+t/3)*3},parseNormalIndex:function(e,t){let n=parseInt(e,10);return(n>=0?n-1:n+t/3)*3},parseUVIndex:function(e,t){let n=parseInt(e,10);return(n>=0?n-1:n+t/2)*2},addVertex:function(e,t,n){let i=this.vertices,s=this.object.geometry.vertices;s.push(i[e+0],i[e+1],i[e+2]),s.push(i[t+0],i[t+1],i[t+2]),s.push(i[n+0],i[n+1],i[n+2])},addVertexPoint:function(e){let t=this.vertices;this.object.geometry.vertices.push(t[e+0],t[e+1],t[e+2])},addVertexLine:function(e){let t=this.vertices;this.object.geometry.vertices.push(t[e+0],t[e+1],t[e+2])},addNormal:function(e,t,n){let i=this.normals,s=this.object.geometry.normals;s.push(i[e+0],i[e+1],i[e+2]),s.push(i[t+0],i[t+1],i[t+2]),s.push(i[n+0],i[n+1],i[n+2])},addFaceNormal:function(e,t,n){let i=this.vertices,s=this.object.geometry.normals;p_.fromArray(i,e),np.fromArray(i,t),m_.fromArray(i,n),kn.subVectors(m_,np),g_.subVectors(p_,np),kn.cross(g_),kn.normalize(),s.push(kn.x,kn.y,kn.z),s.push(kn.x,kn.y,kn.z),s.push(kn.x,kn.y,kn.z)},addColor:function(e,t,n){let i=this.colors,s=this.object.geometry.colors;i[e]!==void 0&&s.push(i[e+0],i[e+1],i[e+2]),i[t]!==void 0&&s.push(i[t+0],i[t+1],i[t+2]),i[n]!==void 0&&s.push(i[n+0],i[n+1],i[n+2])},addUV:function(e,t,n){let i=this.uvs,s=this.object.geometry.uvs;s.push(i[e+0],i[e+1]),s.push(i[t+0],i[t+1]),s.push(i[n+0],i[n+1])},addDefaultUV:function(){let e=this.object.geometry.uvs;e.push(0,0),e.push(0,0),e.push(0,0)},addUVLine:function(e){let t=this.uvs;this.object.geometry.uvs.push(t[e+0],t[e+1])},addFace:function(e,t,n,i,s,o,a,l,c){let h=this.vertices.length,u=this.parseVertexIndex(e,h),d=this.parseVertexIndex(t,h),f=this.parseVertexIndex(n,h);if(this.addVertex(u,d,f),this.addColor(u,d,f),a!==void 0&&a!==""){let p=this.normals.length;u=this.parseNormalIndex(a,p),d=this.parseNormalIndex(l,p),f=this.parseNormalIndex(c,p),this.addNormal(u,d,f)}else this.addFaceNormal(u,d,f);if(i!==void 0&&i!==""){let p=this.uvs.length;u=this.parseUVIndex(i,p),d=this.parseUVIndex(s,p),f=this.parseUVIndex(o,p),this.addUV(u,d,f),this.object.geometry.hasUVIndices=!0}else this.addDefaultUV()},addPointGeometry:function(e){this.object.geometry.type="Points";let t=this.vertices.length;for(let n=0,i=e.length;n<i;n++){let s=this.parseVertexIndex(e[n],t);this.addVertexPoint(s),this.addColor(s)}},addLineGeometry:function(e,t){this.object.geometry.type="Line";let n=this.vertices.length,i=this.uvs.length;for(let s=0,o=e.length;s<o;s++)this.addVertexLine(this.parseVertexIndex(e[s],n));for(let s=0,o=t.length;s<o;s++)this.addUVLine(this.parseUVIndex(t[s],i))}};return r.startObject("",!1),r}var xu=class extends It{constructor(e){super(e),this.materials=null}load(e,t,n,i){let s=this,o=new kt(this.manager);o.setPath(this.path),o.setRequestHeader(this.requestHeader),o.setWithCredentials(this.withCredentials),o.load(e,function(a){try{t(s.parse(a))}catch(l){i?i(l):console.error(l),s.manager.itemError(e)}},n,i)}setMaterials(e){return this.materials=e,this}parse(e){let t=new Ob;e.indexOf(`\r
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+`)!==-1&&(e=e.replace(/\\\n/g,""));let n=e.split(`
+`),i=[];for(let a=0,l=n.length;a<l;a++){let c=n[a].trimStart();if(c.length===0)continue;let h=c.charAt(0);if(h!=="#")if(h==="v"){let u=c.split(f_);switch(u[0]){case"v":t.vertices.push(parseFloat(u[1]),parseFloat(u[2]),parseFloat(u[3])),u.length>=7?(_u.setRGB(parseFloat(u[4]),parseFloat(u[5]),parseFloat(u[6]),Tt),t.colors.push(_u.r,_u.g,_u.b)):t.colors.push(void 0,void 0,void 0);break;case"vn":t.normals.push(parseFloat(u[1]),parseFloat(u[2]),parseFloat(u[3]));break;case"vt":t.uvs.push(parseFloat(u[1]),parseFloat(u[2]));break}}else if(h==="f"){let d=c.slice(1).trim().split(f_),f=[];for(let _=0,g=d.length;_<g;_++){let m=d[_];if(m.length>0){let y=m.split("/");f.push(y)}}let p=f[0];for(let _=1,g=f.length-1;_<g;_++){let m=f[_],y=f[_+1];t.addFace(p[0],m[0],y[0],p[1],m[1],y[1],p[2],m[2],y[2])}}else if(h==="l"){let u=c.substring(1).trim().split(" "),d=[],f=[];if(c.indexOf("/")===-1)d=u;else for(let p=0,_=u.length;p<_;p++){let g=u[p].split("/");g[0]!==""&&d.push(g[0]),g[1]!==""&&f.push(g[1])}t.addLineGeometry(d,f)}else if(h==="p"){let d=c.slice(1).trim().split(" ");t.addPointGeometry(d)}else if((i=Nb.exec(c))!==null){let u=(" "+i[0].slice(1).trim()).slice(1);t.startObject(u)}else if(Ub.test(c))t.object.startMaterial(c.substring(7).trim(),t.materialLibraries);else if(Db.test(c))t.materialLibraries.push(c.substring(7).trim());else if(Fb.test(c))console.warn('THREE.OBJLoader: Rendering identifier "usemap" not supported. Textures must be defined in MTL files.');else if(h==="s"){if(i=c.split(" "),i.length>1){let d=i[1].trim().toLowerCase();t.object.smooth=d!=="0"&&d!=="off"}else t.object.smooth=!0;let u=t.object.currentMaterial();u&&(u.smooth=t.object.smooth)}else{if(c==="\0")continue;console.warn('THREE.OBJLoader: Unexpected line: "'+c+'"')}}t.finalize();let s=new cn;if(s.materialLibraries=[].concat(t.materialLibraries),!(t.objects.length===1&&t.objects[0].geometry.vertices.length===0)===!0)for(let a=0,l=t.objects.length;a<l;a++){let c=t.objects[a],h=c.geometry,u=c.materials,d=h.type==="Line",f=h.type==="Points",p=!1;if(h.vertices.length===0)continue;let _=new Oe;_.setAttribute("position",new fe(h.vertices,3)),h.normals.length>0&&_.setAttribute("normal",new fe(h.normals,3)),h.colors.length>0&&(p=!0,_.setAttribute("color",new fe(h.colors,3))),h.hasUVIndices===!0&&_.setAttribute("uv",new fe(h.uvs,2));let g=[];for(let y=0,b=u.length;y<b;y++){let x=u[y],T=x.name+"_"+x.smooth+"_"+p,S=t.materials[T];if(this.materials!==null){if(S=this.materials.create(x.name),d&&S&&!(S instanceof Rt)){let w=new Rt;vt.prototype.copy.call(w,S),w.color.copy(S.color),S=w}else if(f&&S&&!(S instanceof wn)){let w=new wn({size:10,sizeAttenuation:!1});vt.prototype.copy.call(w,S),w.color.copy(S.color),w.map=S.map,S=w}}S===void 0&&(d?S=new Rt:f?S=new wn({size:1,sizeAttenuation:!1}):S=new zs,S.name=x.name,S.flatShading=!x.smooth,S.vertexColors=p,t.materials[T]=S),g.push(S)}let m;if(g.length>1){for(let y=0,b=u.length;y<b;y++){let x=u[y];_.addGroup(x.groupStart,x.groupCount,y)}d?m=new Xt(_,g):f?m=new jn(_,g):m=new rt(_,g)}else d?m=new Xt(_,g[0]):f?m=new jn(_,g[0]):m=new rt(_,g[0]);m.name=c.name,s.add(m)}else if(t.vertices.length>0){let a=new wn({size:1,sizeAttenuation:!1}),l=new Oe;l.setAttribute("position",new fe(t.vertices,3)),t.colors.length>0&&t.colors[0]!==void 0&&(l.setAttribute("color",new fe(t.colors,3)),a.vertexColors=!0);let c=new jn(l,a);s.add(c)}return s}};var yu=class extends Ps{constructor(){super(),this.name="RoomEnvironment",this.position.y=-3.5;let e=new ui;e.deleteAttribute("uv");let t=new Un({side:qt}),n=new Un,i=new Di(16777215,900,28,2);i.position.set(.418,16.199,.3),this.add(i);let s=new rt(e,t);s.position.set(-.757,13.219,.717),s.scale.set(31.713,28.305,28.591),this.add(s);let o=new Ii(e,n,6),a=new st;a.position.set(-10.906,2.009,1.846),a.rotation.set(0,-.195,0),a.scale.set(2.328,7.905,4.651),a.updateMatrix(),o.setMatrixAt(0,a.matrix),a.position.set(-5.607,-.754,-.758),a.rotation.set(0,.994,0),a.scale.set(1.97,1.534,3.955),a.updateMatrix(),o.setMatrixAt(1,a.matrix),a.position.set(6.167,.857,7.803),a.rotation.set(0,.561,0),a.scale.set(3.927,6.285,3.687),a.updateMatrix(),o.setMatrixAt(2,a.matrix),a.position.set(-2.017,.018,6.124),a.rotation.set(0,.333,0),a.scale.set(2.002,4.566,2.064),a.updateMatrix(),o.setMatrixAt(3,a.matrix),a.position.set(2.291,-.756,-2.621),a.rotation.set(0,-.286,0),a.scale.set(1.546,1.552,1.496),a.updateMatrix(),o.setMatrixAt(4,a.matrix),a.position.set(-2.193,-.369,-5.547),a.rotation.set(0,.516,0),a.scale.set(3.875,3.487,2.986),a.updateMatrix(),o.setMatrixAt(5,a.matrix),this.add(o);let l=new rt(e,Mo(50));l.position.set(-16.116,14.37,8.208),l.scale.set(.1,2.428,2.739),this.add(l);let c=new rt(e,Mo(50));c.position.set(-16.109,18.021,-8.207),c.scale.set(.1,2.425,2.751),this.add(c);let h=new rt(e,Mo(17));h.position.set(14.904,12.198,-1.832),h.scale.set(.15,4.265,6.331),this.add(h);let u=new rt(e,Mo(43));u.position.set(-.462,8.89,14.52),u.scale.set(4.38,5.441,.088),this.add(u);let d=new rt(e,Mo(20));d.position.set(3.235,11.486,-12.541),d.scale.set(2.5,2,.1),this.add(d);let f=new rt(e,Mo(100));f.position.set(0,20,0),f.scale.set(1,.1,1),this.add(f)}dispose(){let e=new Set;this.traverse(t=>{t.isMesh&&(e.add(t.geometry),e.add(t.material))});for(let t of e)t.dispose()}};function Mo(r){return new ks({color:0,emissive:16777215,emissiveIntensity:r})}window.FlashThree={THREE:Tf,OrbitControls:du,GLTFLoader:fu,STLLoader:gu,OBJLoader:xu,RoomEnvironment:yu};})();
diff --git a/flash/web/three/viewer.js b/flash/web/three/viewer.js
new file mode 100644
index 0000000..d8f576f
--- /dev/null
+++ b/flash/web/three/viewer.js
@@ -0,0 +1,231 @@
+/* Flash's 3D model viewer: draws a .glb, .stl or .obj file in a box,
+   lit like a studio, sitting on a soft shadow, to turn with the mouse.
+   The web UI's panel and the headless preview the agent looks at both
+   use this, so what the agent checks is what the user sees. Needs
+   three.min.js, which sets window.FlashThree, loaded first. */
+(function () {
+  "use strict";
+
+  const SKY = [1, 0.7, 1];  // where the camera starts, looking at the model
+
+  function parse(T, data, suffix) {
+    return new Promise((resolve, reject) => {
+      if (suffix === ".glb") {
+        new T.GLTFLoader().parse(data, "", (gltf) => resolve(gltf.scene), reject);
+        return;
+      }
+      if (suffix === ".stl") {
+        const geometry = new T.STLLoader().parse(data);
+        geometry.computeVertexNormals();
+        const material = new T.THREE.MeshStandardMaterial({
+          color: geometry.hasColors ? 0xffffff : 0xb0b4bb,
+          vertexColors: !!geometry.hasColors,
+          roughness: 0.55,
+          metalness: 0.05,
+        });
+        const mesh = new T.THREE.Mesh(geometry, material);
+        // STL files are made Z up, for printing; turn it to Y up.
+        mesh.rotation.x = -Math.PI / 2;
+        const group = new T.THREE.Group();
+        group.add(mesh);
+        resolve(group);
+        return;
+      }
+      if (suffix === ".obj") {
+        const text = new TextDecoder().decode(data);
+        const group = new T.OBJLoader().parse(text);
+        group.traverse((node) => {
+          if (node.isMesh && (!node.material || node.material.type === "MeshPhongMaterial")) {
+            node.material = new T.THREE.MeshStandardMaterial({ color: 0xb0b4bb, roughness: 0.55 });
+          }
+        });
+        resolve(group);
+        return;
+      }
+      reject(new Error(`cannot show ${suffix} files`));
+    });
+  }
+
+  function stats(root) {
+    let meshes = 0;
+    let triangles = 0;
+    root.traverse((node) => {
+      if (!node.isMesh || !node.geometry) return;
+      meshes += 1;
+      const g = node.geometry;
+      triangles += Math.floor((g.index ? g.index.count : g.attributes.position.count) / 3);
+    });
+    return { meshes, triangles };
+  }
+
+  /* Draw DATA (an ArrayBuffer, or a URL to fetch) of type SUFFIX in
+     HOLDER. Resolves to a handle: reset() puts the camera back,
+     wireframe(on) shows the edges, spin(on) turns the model slowly, and
+     dispose() lets go of the GPU once the panel shows something else.
+     OPTIONS: light (a light background), still (draw once, for a
+     picture, with no animation). */
+  async function show(holder, data, suffix, options) {
+    const opts = options || {};
+    const T = window.FlashThree;
+    if (!T) throw new Error("three.js did not load");
+    const THREE = T.THREE;
+    if (typeof data === "string") {
+      const response = await fetch(data, { credentials: "same-origin" });
+      if (!response.ok) throw new Error(response.statusText || `HTTP ${response.status}`);
+      data = await response.arrayBuffer();
+    }
+    const model = await parse(T, data, String(suffix || "").toLowerCase());
+
+    const renderer = new THREE.WebGLRenderer({
+      antialias: true, alpha: true, preserveDrawingBuffer: !!opts.still,
+    });
+    renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
+    renderer.outputColorSpace = THREE.SRGBColorSpace;
+    renderer.toneMapping = THREE.ACESFilmicToneMapping;
+    renderer.toneMappingExposure = 1;
+    renderer.shadowMap.enabled = true;
+    renderer.shadowMap.type = THREE.PCFSoftShadowMap;
+    renderer.domElement.style.display = "block";
+    renderer.domElement.style.width = "100%";
+    renderer.domElement.style.height = "100%";
+    renderer.domElement.style.touchAction = "none";
+    holder.appendChild(renderer.domElement);
+
+    const scene = new THREE.Scene();
+    const pmrem = new THREE.PMREMGenerator(renderer);
+    const environment = pmrem.fromScene(new T.RoomEnvironment(), 0.04).texture;
+    scene.environment = environment;
+    pmrem.dispose();
+
+    model.traverse((node) => {
+      if (node.isMesh) { node.castShadow = true; node.receiveShadow = true; }
+    });
+    scene.add(model);
+
+    // Measure it, and set it on the ground where its lowest point is.
+    const box = new THREE.Box3().setFromObject(model);
+    if (box.isEmpty()) throw new Error("the model has nothing in it to draw");
+    const size = box.getSize(new THREE.Vector3());
+    const centre = box.getCenter(new THREE.Vector3());
+    const radius = Math.max(size.length() / 2, 1e-3);
+
+    const sun = new THREE.DirectionalLight(0xffffff, 1.6);
+    sun.position.set(centre.x + radius * 1.5, box.max.y + radius * 3, centre.z + radius * 2);
+    sun.target.position.copy(centre);
+    sun.castShadow = true;
+    sun.shadow.mapSize.set(2048, 2048);
+    sun.shadow.camera.left = sun.shadow.camera.bottom = -radius * 2;
+    sun.shadow.camera.right = sun.shadow.camera.top = radius * 2;
+    sun.shadow.camera.near = radius * 0.1;
+    sun.shadow.camera.far = radius * 10;
+    sun.shadow.bias = -0.0005;
+    sun.shadow.normalBias = radius * 0.004;
+    scene.add(sun, sun.target);
+    scene.add(new THREE.HemisphereLight(0xffffff, 0x888888, 0.4));
+
+    const light = opts.light !== undefined ? opts.light
+      : document.documentElement.dataset.theme === "light";
+    const floor = new THREE.Mesh(
+      new THREE.PlaneGeometry(radius * 12, radius * 12),
+      new THREE.ShadowMaterial({ opacity: light ? 0.18 : 0.35 }),
+    );
+    floor.rotation.x = -Math.PI / 2;
+    floor.position.set(centre.x, box.min.y - radius * 0.001, centre.z);
+    floor.receiveShadow = true;
+    scene.add(floor);
+
+    const step = Math.pow(10, Math.floor(Math.log10(radius)));
+    const cells = Math.max(4, Math.min(40, Math.round((radius * 6) / step)));
+    const grid = new THREE.GridHelper(step * cells, cells, light ? 0xc8c8cc : 0x4a4a50, light ? 0xdedee2 : 0x34343a);
+    grid.position.set(centre.x, box.min.y, centre.z);
+    grid.material.transparent = true;
+    grid.material.opacity = 0.6;
+    grid.material.depthWrite = false;
+    scene.add(grid);
+
+    const camera = new THREE.PerspectiveCamera(40, 1, radius / 100, radius * 100);
+    const controls = new T.OrbitControls(camera, renderer.domElement);
+    controls.enableDamping = true;
+    controls.dampingFactor = 0.08;
+    controls.minDistance = radius * 0.2;
+    controls.maxDistance = radius * 20;
+
+    function reset() {
+      const toward = new THREE.Vector3(...SKY).normalize();
+      // Far enough back that the whole model fits the narrower way.
+      const high = THREE.MathUtils.degToRad(camera.fov / 2);
+      const wide = Math.atan(Math.tan(high) * camera.aspect);
+      const fit = radius / Math.sin(Math.min(high, wide));
+      camera.position.copy(centre).addScaledVector(toward, fit * 0.95);
+      controls.target.copy(centre);
+      camera.lookAt(centre);
+      controls.update();
+    }
+
+    let width = 0;
+    let height = 0;
+    function resize() {
+      const w = Math.max(1, holder.clientWidth);
+      const h = Math.max(1, holder.clientHeight);
+      if (w === width && h === height) return;
+      width = w;
+      height = h;
+      renderer.setSize(w, h, false);
+      camera.aspect = w / h;
+      camera.updateProjectionMatrix();
+    }
+    resize();
+    reset();
+
+    let frame = 0;
+    let alive = true;
+    const watcher = typeof ResizeObserver === "function" ? new ResizeObserver(resize) : null;
+    if (watcher) watcher.observe(holder);
+    // It turns slowly on its own until someone takes hold of it.
+    controls.autoRotate = !opts.still;
+    controls.autoRotateSpeed = 1.2;
+    controls.addEventListener("start", () => { controls.autoRotate = false; });
+
+    function tick() {
+      if (!alive) return;
+      frame = requestAnimationFrame(tick);
+      controls.update();
+      renderer.render(scene, camera);
+    }
+    if (opts.still) renderer.render(scene, camera); else tick();
+
+    const counted = stats(model);
+    return {
+      size: [size.x, size.y, size.z],
+      meshes: counted.meshes,
+      triangles: counted.triangles,
+      reset,
+      spin(on) { controls.autoRotate = !!on; },
+      wireframe(on) {
+        model.traverse((node) => {
+          if (!node.isMesh) return;
+          for (const m of [].concat(node.material)) m.wireframe = !!on;
+        });
+      },
+      dispose() {
+        alive = false;
+        cancelAnimationFrame(frame);
+        if (watcher) watcher.disconnect();
+        controls.dispose();
+        scene.traverse((node) => {
+          if (node.geometry) node.geometry.dispose();
+          for (const m of [].concat(node.material || [])) {
+            for (const key in m) if (m[key] && m[key].isTexture) m[key].dispose();
+            m.dispose();
+          }
+        });
+        environment.dispose();
+        renderer.dispose();
+        renderer.forceContextLoss();
+        renderer.domElement.remove();
+      },
+    };
+  }
+
+  window.FlashModelView = { show };
+})();
diff --git a/flash/workspace.py b/flash/workspace.py
index b87a07c..af6ced2 100644
--- a/flash/workspace.py
+++ b/flash/workspace.py
@@ -386,8 +386,14 @@ def folder_suggestions(typed: str) -> list[str]:
     ".md": "text/plain; charset=utf-8",
     ".markdown": "text/plain; charset=utf-8",
     ".txt": "text/plain; charset=utf-8",
+    # 3D models: turned and zoomed in the page's own viewer, which reads
+    # them as data. Nothing in one runs.
+    ".glb": "model/gltf-binary",
+    ".stl": "model/stl",
+    ".obj": "model/obj",
 }
 DOCUMENT_TYPES = (".md", ".markdown", ".txt")
+MODEL_TYPES = (".glb", ".stl", ".obj")
 MAX_SHOWN_BYTES = 50 * 1024 * 1024
 # A document is edited in the page as text, so it stays a size a browser
 # edits comfortably.
@@ -407,7 +413,8 @@ def keep_file(source: str) -> dict:
     suffix = path.suffix.lower()
     if suffix not in SHOWN_TYPES:
         raise WorkspaceError(
-            f"{path.name} is not an image, a PDF, a web page, or a document"
+            f"{path.name} is not an image, a PDF, a web page, a document, "
+            "or a 3D model"
         )
 
     size = path.stat().st_size
@@ -434,6 +441,7 @@ def keep_file(source: str) -> dict:
             "pdf" if suffix == ".pdf"
             else "html" if SHOWN_TYPES[suffix] == "text/html"
             else "doc" if document
+            else "model" if suffix in MODEL_TYPES
             else "image"
         ),
     }
@@ -485,8 +493,9 @@ def kept_file(file_id: str) -> Optional[tuple[Path, str]]:
         if path.is_file():
             return path, mime
     uploaded = upload_path(file_id)
-    # An upload is served back only as a picture, a PDF, or a page: a
-    # text file the user attached is the model's to read, not the page's.
+    # An upload is served back only as a picture, a PDF, a page, or a
+    # 3D model: a text file the user attached is the model's to read,
+    # not the page's.
     suffix = uploaded.suffix.lower() if uploaded is not None else ""
     if suffix in SHOWN_TYPES and suffix not in DOCUMENT_TYPES:
         return uploaded, SHOWN_TYPES[suffix]
@@ -527,7 +536,9 @@ def upload_info(file_id: str) -> Optional[dict]:
         "mime": mime,
         "kind": (
             "image" if mime.startswith("image/")
-            else "pdf" if suffix == ".pdf" else "file"
+            else "pdf" if suffix == ".pdf"
+            else "model" if suffix in MODEL_TYPES
+            else "file"
         ),
         "path": str(path),
     }
diff --git a/pyproject.toml b/pyproject.toml
index 7ab4d56..afe0433 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,6 +41,8 @@ flash = [
     "web/*.svg",
     "web/katex/*.js",
     "web/katex/*.txt",
+    "web/three/*.js",
+    "web/three/*.txt",
     "web/*.txt",
 ]
 
diff --git a/tests/test_model3d.py b/tests/test_model3d.py
new file mode 100644
index 0000000..c878479
--- /dev/null
+++ b/tests/test_model3d.py
@@ -0,0 +1,276 @@
+# pylint: disable=C0114,C0115,C0116
+
+import json
+import math
+import struct
+
+import pytest
+
+from flash import model3d, tools
+from flash.tools import make_3d_model, send_3d_model, take_pending_images
+
+
+def _volume(geo):
+    """Signed volume: positive only when every face points outwards."""
+
+    total = 0.0
+    points = geo.positions
+    for i in range(0, len(geo.indices), 3):
+        a, b, c = (points[j] for j in geo.indices[i:i + 3])
+        total += (
+            a[0] * (b[1] * c[2] - b[2] * c[1])
+            - a[1] * (b[0] * c[2] - b[2] * c[0])
+            + a[2] * (b[0] * c[1] - b[1] * c[0])
+        )
+    return total / 6
+
+
+def _read_glb(data):
+    magic, version, length = struct.unpack_from("<4sII", data, 0)
+    assert (magic, version, length) == (b"glTF", 2, len(data))
+    size, kind = struct.unpack_from("<I4s", data, 12)
+    assert kind == b"JSON"
+    document = json.loads(data[20:20 + size])
+    size_bin, kind_bin = struct.unpack_from("<I4s", data, 20 + size)
+    assert kind_bin == b"BIN\x00"
+    assert size_bin == document["buffers"][0]["byteLength"]
+    return document
+
+
+# --- Shapes ---------------------------------------------------------------
+
+
+@pytest.mark.parametrize("spec, volume", [
+    ({"shape": "box", "size": [1, 2, 3]}, 6),
+    ({"shape": "sphere", "radius": 1, "segments": 96}, 4 / 3 * math.pi),
+    ({"shape": "cylinder", "radius": 1, "height": 2, "segments": 96},
+     2 * math.pi),
+    ({"shape": "cone", "radius": 1, "height": 3, "segments": 96}, math.pi),
+    ({"shape": "torus", "radius": 2, "tube": 0.5, "segments": 128},
+     2 * math.pi ** 2 * 2 * 0.25),
+    ({"shape": "lathe", "points": [[0, 0], [1, 0], [1, 1], [0, 1]],
+      "segments": 96}, math.pi),
+    # The same lathe, written top to bottom, still faces out.
+    ({"shape": "lathe", "points": [[0, 1], [1, 1], [1, 0], [0, 0]],
+      "segments": 96}, math.pi),
+    # An L, both ways round.
+    ({"shape": "extrude", "height": 1,
+      "points": [[0, 0], [2, 0], [2, 1], [1, 1], [1, 2], [0, 2]]}, 3),
+    ({"shape": "extrude", "height": 1,
+      "points": [[0, 0], [0, 2], [1, 2], [1, 1], [2, 1], [2, 0]]}, 3),
+])
+def test_closed_shapes_face_outwards_and_have_the_right_volume(spec, volume):
+    part = model3d.Part(0, spec)
+
+    assert _volume(part.geometry) == pytest.approx(volume, rel=0.01)
+
+
+def test_normals_agree_with_the_faces_they_light():
+    for spec in (
+        {"shape": "box"}, {"shape": "sphere"}, {"shape": "cylinder"},
+        {"shape": "cone"}, {"shape": "torus"},
+        {"shape": "lathe", "points": [[0.2, 0], [0.5, 0.5], [0.1, 1]]},
+    ):
+        geo = model3d.Part(0, spec).geometry
+        for i in range(0, len(geo.indices), 3):
+            a, b, c = geo.indices[i:i + 3]
+            face = model3d._cross(
+                model3d._sub(geo.positions[b], geo.positions[a]),
+                model3d._sub(geo.positions[c], geo.positions[a]),
+            )
+            normal = geo.normals[a]
+            assert sum(f * n for f, n in zip(face, normal)) >= 0, spec
+
+
+def test_a_mesh_takes_polygons_and_checks_its_indices():
+    square = {
+        "shape": "mesh",
+        "vertices": [[0, 0, 0], [1, 0, 0], [1, 0, 1], [0, 0, 1]],
+        "faces": [[0, 1, 2, 3]],
+    }
+    assert model3d.Part(0, square).geometry.triangles == 2
+
+    square["faces"] = [[0, 1, 9]]
+    with pytest.raises(model3d.ModelError, match="not in vertices"):
+        model3d.Part(0, square)
+
+
+@pytest.mark.parametrize("spec, message", [
+    ({"shape": "pyramid"}, "shape must be one of"),
+    ({"shape": "box", "size": [1, -1, 1]}, "more than 0"),
+    ({"shape": "box", "size": [1, 2]}, r"\[x, y, z\]"),
+    ({"shape": "sphere", "radius": "big"}, "must be a number"),
+    ({"shape": "box", "color": "sort of blue"}, "hex code"),
+    ({"shape": "extrude", "points": [[0, 0], [1, 1]]}, "at least 3"),
+    ({"shape": "lathe", "points": [[1, 0]]}, "at least 2"),
+])
+def test_bad_parts_say_which_part_and_why(spec, message):
+    with pytest.raises(model3d.ModelError, match=message) as caught:
+        model3d.build_parts([{"shape": "box"}, spec])
+
+    assert str(caught.value).startswith("part 2")
+
+
+def test_parts_can_arrive_as_a_json_string():
+    built = model3d.build_parts('[{"shape": "box"}, {"shape": "sphere"}]')
+
+    assert [p.shape for p in built] == ["box", "sphere"]
+
+
+def test_colors_take_names_and_short_hex():
+    assert model3d.parse_color("#f80") == pytest.approx((1, 0x88 / 255, 0))
+    assert model3d.parse_color("White") == (1, 1, 1)
+
+
+# --- The file -------------------------------------------------------------
+
+
+def test_glb_is_well_formed_and_places_every_part():
+    built = model3d.build_parts([
+        {"shape": "box", "name": "seat", "position": [0, 0.5, 0],
+         "color": "red"},
+        {"shape": "sphere", "position": [1, 2, 3], "rotation": [0, 90, 0],
+         "scale": [1, 2, 1], "color": "red"},
+        {"shape": "cone", "color": "#00f", "opacity": 0.5,
+         "emissive": "#ff0"},
+    ])
+
+    data = model3d.to_glb(built, "Chair")
+    document = _read_glb(data)
+
+    assert len(data) % 4 == 0
+    assert document["scenes"][0]["name"] == "Chair"
+    assert [n["name"] for n in document["nodes"]] == [
+        "seat", "sphere-2", "cone-3",
+    ]
+    assert document["nodes"][0]["translation"] == [0, 0.5, 0]
+    turned = document["nodes"][1]["rotation"]
+    assert turned == pytest.approx([0, math.sqrt(0.5), 0, math.sqrt(0.5)])
+    assert document["nodes"][1]["scale"] == [1, 2, 1]
+    # The two red parts share one material.
+    assert len(document["materials"]) == 2
+    see_through = document["materials"][1]
+    assert see_through["alphaMode"] == "BLEND"
+    assert see_through["emissiveFactor"] == pytest.approx([1, 1, 0])
+    for view in document["bufferViews"]:
+        assert view["byteOffset"] % 4 == 0
+
+
+def test_describe_gives_the_size_and_notices_a_floating_model():
+    built = model3d.build_parts([
+        {"shape": "box", "size": [2, 1, 1], "position": [0, 0.5, 0]},
+    ])
+    text = model3d.describe(built)
+    assert "1 part, 12 triangles" in text
+    assert "Overall size (x, y, z): 2, 1, 1" in text
+    assert "does not sit on the ground" not in text
+
+    built = model3d.build_parts([{"shape": "box", "position": [0, 3, 0]}])
+    assert "does not sit on the ground" in model3d.describe(built)
+
+
+def test_the_bounds_follow_the_turn():
+    built = model3d.build_parts([
+        {"shape": "box", "size": [2, 1, 1], "rotation": [0, 0, 90]},
+    ])
+
+    low, high = model3d.bounds(built)
+
+    assert high[0] - low[0] == pytest.approx(1)
+    assert high[1] - low[1] == pytest.approx(2)
+
+
+# --- The tools ------------------------------------------------------------
+
+
+def _no_vision(monkeypatch):
+    monkeypatch.setattr(tools, "model_sees_images", lambda *_: False)
+    monkeypatch.setattr(tools, "_open_with_spinner", lambda path: "")
+
+
+def test_make_3d_model_writes_a_glb(tmp_path, monkeypatch):
+    _no_vision(monkeypatch)
+    target = tmp_path / "out" / "lamp"
+
+    result = make_3d_model(str(target), [
+        {"shape": "cylinder", "radius": 0.1, "height": 0.4,
+         "position": [0, 0.2, 0]},
+    ], title="Lamp")
+
+    written = tmp_path / "out" / "lamp.glb"
+    assert _read_glb(written.read_bytes())["scenes"][0]["name"] == "Lamp"
+    assert f"Saved {written}" in result
+    assert "Overall size" in result
+    assert "no vision" in result
+
+
+def test_make_3d_model_writes_nothing_for_a_bad_part(tmp_path, monkeypatch):
+    _no_vision(monkeypatch)
+    target = tmp_path / "bad.glb"
+
+    result = make_3d_model(str(target), [{"shape": "blob"}])
+
+    assert result.startswith("Error: part 1")
+    assert not target.exists()
+
+
+def test_make_3d_model_leaves_a_file_that_is_not_a_model(
+    tmp_path, monkeypatch
+):
+    _no_vision(monkeypatch)
+    precious = tmp_path / "notes.glb"
+    precious.write_text("my notes")
+
+    result = make_3d_model(str(precious), [{"shape": "box"}])
+
+    assert "left alone" in result
+    assert precious.read_text() == "my notes"
+
+
+def test_make_3d_model_attaches_a_picture_for_a_model_that_sees(
+    tmp_path, monkeypatch
+):
+    take_pending_images()
+    monkeypatch.setattr(tools, "model_sees_images", lambda *_: True)
+    monkeypatch.setattr(tools, "_open_with_spinner", lambda path: "")
+    monkeypatch.setattr(tools, "SCRATCH_DIR", str(tmp_path))
+    pages = []
+
+    def capture(url, out, **_):
+        pages.append(url)
+        out.write_bytes(b"png bytes")
+        return [], ""
+
+    monkeypatch.setattr(tools, "capture", capture)
+
+    result = make_3d_model(str(tmp_path / "cube.glb"), [{"shape": "box"}])
+
+    assert "picture of it" in result
+    assert take_pending_images() == [b"png bytes"]
+    # The page draws the model with the web UI's own viewer.
+    page = (tmp_path / "model-1.html").read_text()
+    assert "FlashModelView.show" in page and "window.FlashThree" in page
+    assert pages == [(tmp_path / "model-1.html").resolve().as_uri()]
+
+
+def test_send_3d_model_checks_what_it_is_given(tmp_path, monkeypatch):
+    _no_vision(monkeypatch)
+    fake = tmp_path / "fake.glb"
+    fake.write_text("not a model")
+    wrong = tmp_path / "model.fbx"
+    wrong.write_bytes(b"x")
+    stl = tmp_path / "part.stl"
+    stl.write_bytes(b"solid part\nendsolid part\n")
+
+    assert "does not start like" in send_3d_model(str(fake))
+    assert "not a .glb, .stl, or .obj" in send_3d_model(str(wrong))
+    assert "no file" in send_3d_model(str(tmp_path / "gone.glb"))
+    assert send_3d_model(str(stl)).startswith("Sent part.stl")
+
+
+def test_the_model_tools_are_offered():
+    names = {t["function"]["name"] for t in tools.tools}
+
+    assert {"make_3d_model", "send_3d_model"} <= names
+    assert tools.FUNCTIONS["make_3d_model"] is make_3d_model
+    assert tools.FUNCTIONS["send_3d_model"] is send_3d_model
diff --git a/tests/test_web.py b/tests/test_web.py
index 3b3c524..1d84465 100644
--- a/tests/test_web.py
+++ b/tests/test_web.py
@@ -588,6 +588,26 @@ def test_katex_is_served_for_math(self, server):
         ]
         assert (web.WEB_DIR / "katex" / "LICENSE.txt").is_file()
 
+    def test_three_js_is_served_for_3d_models(self, server):
+        port = server.port
+        for name in ("three.min.js", "viewer.js"):
+            conn = http.client.HTTPConnection("127.0.0.1", port, timeout=5)
+            conn.request("GET", f"/static/three/{name}",
+                         headers={"Host": f"127.0.0.1:{port}"})
+            response = conn.getresponse()
+            body = response.read()
+            conn.close()
+
+            assert response.status == 200
+            assert response.getheader("Content-Type").startswith(
+                "text/javascript"
+            )
+            assert body
+        page = web.PAGE.read_bytes()
+        assert b"/static/three/three.min.js" in page
+        assert b"/static/three/viewer.js" in page
+        assert (web.WEB_DIR / "three" / "LICENSE.txt").is_file()
+
     def test_but_nothing_else_is(self, server):
         assert request(server, "GET", "/static/index.html",
                        token=False)[0] == 403
@@ -1361,6 +1381,36 @@ def test_a_page_is_served_sandboxed(self, server, tmp_path):
         assert policy.startswith("sandbox")
         assert "allow-same-origin" not in policy
 
+    def test_in_the_web_ui_a_3d_model_goes_to_the_page(
+        self, server, tmp_path, monkeypatch
+    ):
+        monkeypatch.setattr(tools, "model_sees_images", lambda *_: False)
+        opened = []
+        monkeypatch.setattr(tools, "_open_with_spinner",
+                            lambda path: opened.append(path) or "")
+        target = tmp_path / "chair.glb"
+        FakeClient.scripts = [
+            [part(calls=[call("make_3d_model", path=str(target), parts=[
+                {"shape": "box", "size": [0.5, 0.05, 0.5],
+                 "position": [0, 0.45, 0]},
+            ])]), part(done=True)],
+            [part("There it is."), part(done=True)],
+        ]
+        session = web.Session()
+        chat = session.new_chat()
+
+        run(session, chat, "make me a chair")
+
+        shown = [e for e in chat.log if e["type"] == "file"]
+        assert [(f["name"], f["kind"], f["mime"]) for f in shown] == [
+            ("chair.glb", "model", "model/gltf-binary"),
+        ]
+        assert opened == []
+        status, body = request(server, "GET", f"/api/files/{shown[0]['id']}")
+        assert status == 200
+        assert body == target.read_bytes()
+        assert request.last.getheader("Content-Type") == "model/gltf-binary"
+
     def test_send_document_checks_what_it_is_given(self, tmp_path):
         wrong = tmp_path / "page.html"
         wrong.write_text("<p>x</p>")

From ca821b982e63a35f39d4862af7d1deeefc880658 Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Tue, 29 Sep 2026 18:34:40 +0000
Subject: [PATCH 4/8] feat: give 3D models text, and show their true colours

The agent had no way to make letters, so asked for the Minecraft logo
it stood a plain box in for each one. Add a text shape: words in a
blocky 5x7 pixel font (A-Z, 0-9, common punctuation, lines split by
\n), one block per pixel with the faces between touching blocks left
out, sized by the height of a capital. The tool's description now says
to use it for any logo, sign or title, never a box per letter, and to
colour parts like the real thing.

The viewer now starts in front of the model (glTF's +Z) rather than
45 degrees off to one side, which squashed anything with a front, text
most of all, and it fits wide models without clipping their ends. It
also uses Khronos PBR Neutral tone mapping and a softer environment,
so a face turned to the viewer shows about the colour it was given: a
#9c9c9c grey rendered as 216 and now renders as 160.
---
 README.md                 |   2 +-
 flash/model3d.py          | 175 +++++++++++++++++++++++++++++++++-----
 flash/tools.py            |  33 ++++++-
 flash/web/three/viewer.js |  16 ++--
 tests/test_model3d.py     |  56 ++++++++++++
 5 files changed, 250 insertions(+), 32 deletions(-)

diff --git a/README.md b/README.md
index 53c1f72..7f1777d 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ FLASH (**F**ast **L**ocal **A**gent **SH**ell) CLI is an AI-powered command-line
   - Manually execute shell commands using the `!` prefix.
 - **`flash://` Links**: Open Flash from a browser or another app with a prompt ready to go (`flash://?prompt=What+is+Python`).
 - **Image Recognition**: Send a local image to a vision-capable model with `/image <path> [prompt]`, or let the AI open one itself with its `view_image` tool.
-- **3D Models**: Ask for a chair, a vase, or a floor plan and the AI builds it with its `make_3d_model` tool out of boxes, cylinders, spheres, lathed profiles, and extruded outlines, saved as a `.glb` that opens in Blender and every game engine. In the web UI it appears in a 3D viewer beside the chat that you can turn, zoom, and download; a vision model also gets a render of it, so it can see a leg floating off the table and fix it. `send_3d_model` shows an existing `.glb`, `.stl`, or `.obj`.
+- **3D Models**: Ask for a chair, a vase, or a floor plan and the AI builds it with its `make_3d_model` tool out of boxes, cylinders, spheres, lathed profiles, extruded outlines, and blocky pixel-font text for logos and signs, saved as a `.glb` that opens in Blender and every game engine. In the web UI it appears in a 3D viewer beside the chat that you can turn, zoom, and download; a vision model also gets a render of it, so it can see a leg floating off the table and fix it. `send_3d_model` shows an existing `.glb`, `.stl`, or `.obj`.
 - **Page Screenshots**: The AI renders a page it built in a headless browser with its `screenshot` tool and looks at the result, so it can see a broken layout instead of guessing from the HTML.
 - **Page Control**: The AI opens a page with `open_page` and then clicks buttons, fills forms, presses keys, and runs JavaScript on it with `interact`, seeing a fresh screenshot, the page's elements, and its console errors after every step, so it can debug what a page *does*, not just how it looks.
 - **Voice Mode**: `/voice on` downloads a Vosk speech model and a Piper voice, then lets you talk to Flash and hear its replies, with typing still available at any time.
diff --git a/flash/model3d.py b/flash/model3d.py
index 16fae51..eb939a0 100644
--- a/flash/model3d.py
+++ b/flash/model3d.py
@@ -1,10 +1,11 @@
 """3D models the agent builds out of parts.
 
 The model describes a model as a list of parts, each a shape (a box, a
-sphere, a cylinder, a lathed profile, an extruded outline, or a mesh of
-its own) with a place, a turn, a size and a colour. This turns that list
-into a binary glTF (.glb) file: one file that the web UI's viewer, Blender,
-Windows' 3D Viewer and every game engine open as it is.
+sphere, a cylinder, a lathed profile, an extruded outline, blocky text,
+or a mesh of its own) with a place, a turn, a size and a colour. This
+turns that list into a binary glTF (.glb) file: one file that the web
+UI's viewer, Blender, Windows' 3D Viewer and every game engine open as
+it is.
 
 Pure Python on purpose, with no numpy or trimesh to install, since a
 model of a few hundred parts is a few hundred thousand floats at most.
@@ -21,7 +22,7 @@
 # Every shape is built around the origin, Y up, in metres, as glTF has it.
 SHAPES = (
     "box", "sphere", "cylinder", "cone", "torus", "plane", "lathe",
-    "extrude", "mesh",
+    "extrude", "mesh", "text",
 )
 MODEL_SUFFIXES = (".glb", ".stl", ".obj")
 
@@ -203,23 +204,26 @@ def _fraction(value: Any, what: str, fallback: float) -> float:
 # --- The shapes -----------------------------------------------------------
 
 
-def _box(part: dict) -> Geometry:
-    sx, sy, sz = _vector(part.get("size"), "size", (1.0, 1.0, 1.0),
-                         positive=True)
-    x, y, z = sx / 2, sy / 2, sz / 2
-    geo = Geometry()
-    # Each face as its normal and two edges, walked counter-clockwise.
-    faces = (
-        ((1, 0, 0), (0, 0, -1), (0, 1, 0)),
-        ((-1, 0, 0), (0, 0, 1), (0, 1, 0)),
-        ((0, 1, 0), (1, 0, 0), (0, 0, -1)),
-        ((0, -1, 0), (1, 0, 0), (0, 0, 1)),
-        ((0, 0, 1), (1, 0, 0), (0, 1, 0)),
-        ((0, 0, -1), (-1, 0, 0), (0, 1, 0)),
-    )
-    half = (x, y, z)
-    for normal, u, v in faces:
-        centre = tuple(normal[i] * half[i] for i in range(3))
+# A box's faces, each as its normal and two edges, walked
+# counter-clockwise as seen from outside.
+_BOX_FACES = (
+    ((1, 0, 0), (0, 0, -1), (0, 1, 0)),
+    ((-1, 0, 0), (0, 0, 1), (0, 1, 0)),
+    ((0, 1, 0), (1, 0, 0), (0, 0, -1)),
+    ((0, -1, 0), (1, 0, 0), (0, 0, 1)),
+    ((0, 0, 1), (1, 0, 0), (0, 1, 0)),
+    ((0, 0, -1), (-1, 0, 0), (0, 1, 0)),
+)
+
+
+def _add_box(geo: Geometry, middle, half, hidden=()) -> None:
+    """A box around MIDDLE, HALF its size each way, leaving out the
+    faces whose normals are in HIDDEN, where another box touches it."""
+
+    for normal, u, v in _BOX_FACES:
+        if normal in hidden:
+            continue
+        centre = tuple(middle[i] + normal[i] * half[i] for i in range(3))
         corners = []
         for a, b in ((-1, -1), (1, -1), (1, 1), (-1, 1)):
             corners.append(tuple(
@@ -229,6 +233,132 @@ def _box(part: dict) -> Geometry:
         first = [geo.vertex(c, normal) for c in corners]
         geo.triangle(first[0], first[1], first[2])
         geo.triangle(first[0], first[2], first[3])
+
+
+def _box(part: dict) -> Geometry:
+    sx, sy, sz = _vector(part.get("size"), "size", (1.0, 1.0, 1.0),
+                         positive=True)
+    geo = Geometry()
+    _add_box(geo, (0, 0, 0), (sx / 2, sy / 2, sz / 2))
+    return geo
+
+
+# A blocky 5x7 font for the text shape, "#" for a block, drawn top row
+# first. Narrow marks are narrower rows.
+FONT = {
+    "A": (".###.", "#...#", "#...#", "#####", "#...#", "#...#", "#...#"),
+    "B": ("####.", "#...#", "#...#", "####.", "#...#", "#...#", "####."),
+    "C": (".###.", "#...#", "#....", "#....", "#....", "#...#", ".###."),
+    "D": ("####.", "#...#", "#...#", "#...#", "#...#", "#...#", "####."),
+    "E": ("#####", "#....", "#....", "####.", "#....", "#....", "#####"),
+    "F": ("#####", "#....", "#....", "####.", "#....", "#....", "#...."),
+    "G": (".###.", "#...#", "#....", "#.###", "#...#", "#...#", ".###."),
+    "H": ("#...#", "#...#", "#...#", "#####", "#...#", "#...#", "#...#"),
+    "I": ("###", ".#.", ".#.", ".#.", ".#.", ".#.", "###"),
+    "J": ("..###", "...#.", "...#.", "...#.", "#..#.", "#..#.", ".##.."),
+    "K": ("#...#", "#..#.", "#.#..", "##...", "#.#..", "#..#.", "#...#"),
+    "L": ("#....", "#....", "#....", "#....", "#....", "#....", "#####"),
+    "M": ("#...#", "##.##", "#.#.#", "#.#.#", "#...#", "#...#", "#...#"),
+    "N": ("#...#", "##..#", "#.#.#", "#..##", "#...#", "#...#", "#...#"),
+    "O": (".###.", "#...#", "#...#", "#...#", "#...#", "#...#", ".###."),
+    "P": ("####.", "#...#", "#...#", "####.", "#....", "#....", "#...."),
+    "Q": (".###.", "#...#", "#...#", "#...#", "#.#.#", "#..#.", ".##.#"),
+    "R": ("####.", "#...#", "#...#", "####.", "#.#..", "#..#.", "#...#"),
+    "S": (".####", "#....", "#....", ".###.", "....#", "....#", "####."),
+    "T": ("#####", "..#..", "..#..", "..#..", "..#..", "..#..", "..#.."),
+    "U": ("#...#", "#...#", "#...#", "#...#", "#...#", "#...#", ".###."),
+    "V": ("#...#", "#...#", "#...#", "#...#", "#...#", ".#.#.", "..#.."),
+    "W": ("#...#", "#...#", "#...#", "#.#.#", "#.#.#", "##.##", "#...#"),
+    "X": ("#...#", "#...#", ".#.#.", "..#..", ".#.#.", "#...#", "#...#"),
+    "Y": ("#...#", "#...#", ".#.#.", "..#..", "..#..", "..#..", "..#.."),
+    "Z": ("#####", "....#", "...#.", "..#..", ".#...", "#....", "#####"),
+    "0": (".###.", "#...#", "#..##", "#.#.#", "##..#", "#...#", ".###."),
+    "1": ("..#..", ".##..", "..#..", "..#..", "..#..", "..#..", ".###."),
+    "2": (".###.", "#...#", "....#", "...#.", "..#..", ".#...", "#####"),
+    "3": ("####.", "....#", "....#", ".###.", "....#", "....#", "####."),
+    "4": ("...#.", "..##.", ".#.#.", "#..#.", "#####", "...#.", "...#."),
+    "5": ("#####", "#....", "####.", "....#", "....#", "#...#", ".###."),
+    "6": (".###.", "#....", "#....", "####.", "#...#", "#...#", ".###."),
+    "7": ("#####", "....#", "...#.", "..#..", ".#...", ".#...", ".#..."),
+    "8": (".###.", "#...#", "#...#", ".###.", "#...#", "#...#", ".###."),
+    "9": (".###.", "#...#", "#...#", ".####", "....#", "....#", ".###."),
+    " ": ("...",) * 7,
+    ".": (".", ".", ".", ".", ".", ".", "#"),
+    ",": (".", ".", ".", ".", ".", "#", "#"),
+    "!": ("#", "#", "#", "#", "#", ".", "#"),
+    "?": (".###.", "#...#", "....#", "...#.", "..#..", ".....", "..#.."),
+    "-": ("...", "...", "...", "###", "...", "...", "..."),
+    ":": (".", "#", ".", ".", ".", "#", "."),
+    "'": ("#", "#", ".", ".", ".", ".", "."),
+    "&": (".##..", "#..#.", "#.#..", ".#...", "#.#.#", "#..#.", ".##.#"),
+    "/": ("....#", "...#.", "...#.", "..#..", ".#...", ".#...", "#...."),
+}
+FONT_ROWS = 7
+MAX_TEXT = 200
+
+
+def _text(part: dict) -> Geometry:
+    """Words in blocks, one block to a pixel of the font, reading along
+    X and facing +Z: a logo, a sign, a name over a door."""
+
+    words = str(part.get("text") or "").upper()
+    if not words.strip():
+        raise ModelError("a text part needs text")
+    if len(words) > MAX_TEXT:
+        raise ModelError(f"a text part can have at most {MAX_TEXT} letters")
+    unknown = sorted({c for c in words if c not in FONT and c != "\n"})
+    if unknown:
+        raise ModelError(
+            f"the font has no {' '.join(repr(c) for c in unknown)}; it has "
+            "A-Z, 0-9, spaces and . , ! ? - : ' & /"
+        )
+    # The height of a capital, and the block that makes it.
+    height = _number(part.get("height", part.get("size", 1)), "height",
+                     positive=True)
+    block = height / FONT_ROWS
+    depth = _number(part.get("depth", block), "depth", positive=True)
+
+    # Each line as columns of blocks, a column of space between letters.
+    lines = []
+    for line in words.split("\n"):
+        columns: list[str] = []
+        for n, char in enumerate(line):
+            if n:
+                columns.append("." * FONT_ROWS)
+            rows = FONT[char]
+            for x in range(len(rows[0])):
+                columns.append("".join(row[x] for row in rows))
+        lines.append(columns)
+    widest = max(len(columns) for columns in lines)
+    # Lines two blocks apart, each centred.
+    tall = len(lines) * (FONT_ROWS + 2) - 2
+    filled = set()
+    for k, columns in enumerate(lines):
+        left = (widest - len(columns)) // 2
+        top = tall - 1 - k * (FONT_ROWS + 2)
+        for x, column in enumerate(columns):
+            for y, pixel in enumerate(column):
+                if pixel == "#":
+                    filled.add((left + x, top - y))
+    if not filled:
+        raise ModelError("a text part needs at least one letter")
+
+    geo = Geometry()
+    half = (block / 2, block / 2, depth / 2)
+    for x, y in filled:
+        hidden = tuple(
+            normal for normal, step in (
+                ((1, 0, 0), (1, 0)), ((-1, 0, 0), (-1, 0)),
+                ((0, 1, 0), (0, 1)), ((0, -1, 0), (0, -1)),
+            )
+            if (x + step[0], y + step[1]) in filled
+        )
+        middle = (
+            (x + 0.5 - widest / 2) * block,
+            (y + 0.5 - tall / 2) * block,
+            0.0,
+        )
+        _add_box(geo, middle, half, hidden)
     return geo
 
 
@@ -517,6 +647,7 @@ def _mesh(part: dict) -> Geometry:
     "lathe": _lathe,
     "extrude": _extrude,
     "mesh": _mesh,
+    "text": _text,
 }
 
 
diff --git a/flash/tools.py b/flash/tools.py
index 038b09e..93e9485 100644
--- a/flash/tools.py
+++ b/flash/tools.py
@@ -140,7 +140,8 @@
   quoting the words it is about.
 To make a 3D model (an object, a prop, a room, a layout), use the
   make_3d_model tool: it builds the model from parts such as boxes,
-  cylinders, spheres, lathed profiles, and extruded outlines, saves a
+  cylinders, spheres, lathed profiles, extruded outlines, and blocky
+  text for any words, logos, or signs, saves a
   .glb, and shows it in a 3D viewer. Use send_3d_model to show a .glb,
   .stl, or .obj file that already exists.
 When you make an image, PDF, web page, or document for the user, send it
@@ -3568,7 +3569,9 @@ def interact(
                 "so a part rests on it when its position's y is half its "
                 "height. Every shape is centred on its position. Build "
                 "the object from many parts, sized in proportion to the "
-                "real thing. The result gives the model's overall size, "
+                "real thing and coloured like it. Anything with words on "
+                "it (a logo, a sign, a title) gets a text part for them. "
+                "The result gives the model's overall size, "
                 "and a picture of it when you can see images: check both "
                 "and fix what is off. To revise, call again with the "
                 "whole changed list and the same path."
@@ -3608,12 +3611,34 @@ def interact(
                                         "pieces); extrude (points "
                                         "[[x,z],...], an outline seen "
                                         "from above, raised to height: "
-                                        "walls, letters, gears, "
-                                        "L-shapes); mesh (vertices "
+                                        "walls, floor plans, gears, "
+                                        "L-shapes); text (text, height "
+                                        "of a capital, depth: words in a "
+                                        "blocky pixel font, reading "
+                                        "along X and facing +Z, lines "
+                                        "split by \\n: logos, signs, "
+                                        "names; never stand a box in "
+                                        "for a letter); mesh (vertices "
                                         "[[x,y,z],...] and faces, each a "
                                         "list of vertex indices from 0)."
                                     ),
                                 },
+                                "text": {
+                                    "type": "string",
+                                    "description": (
+                                        "For text: the words. A-Z, "
+                                        "0-9, spaces, and . , ! ? - : "
+                                        "' & /."
+                                    ),
+                                },
+                                "depth": {
+                                    "type": "number",
+                                    "description": (
+                                        "For text: how thick the "
+                                        "letters are; one block of the "
+                                        "font (height / 7) by default."
+                                    ),
+                                },
                                 "name": {
                                     "type": "string",
                                     "description": (
diff --git a/flash/web/three/viewer.js b/flash/web/three/viewer.js
index d8f576f..38d51da 100644
--- a/flash/web/three/viewer.js
+++ b/flash/web/three/viewer.js
@@ -6,7 +6,9 @@
 (function () {
   "use strict";
 
-  const SKY = [1, 0.7, 1];  // where the camera starts, looking at the model
+  // Where the camera starts: in front (glTF faces +Z), a little right
+  // and above, so a front reads straight on and the model still has depth.
+  const SKY = [0.45, 0.5, 1];
 
   function parse(T, data, suffix) {
     return new Promise((resolve, reject) => {
@@ -81,7 +83,8 @@
     });
     renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
     renderer.outputColorSpace = THREE.SRGBColorSpace;
-    renderer.toneMapping = THREE.ACESFilmicToneMapping;
+    // Neutral keeps a colour the colour it was given; ACES bleaches greys.
+    renderer.toneMapping = THREE.NeutralToneMapping;
     renderer.toneMappingExposure = 1;
     renderer.shadowMap.enabled = true;
     renderer.shadowMap.type = THREE.PCFSoftShadowMap;
@@ -95,6 +98,9 @@
     const pmrem = new THREE.PMREMGenerator(renderer);
     const environment = pmrem.fromScene(new T.RoomEnvironment(), 0.04).texture;
     scene.environment = environment;
+    // Soft enough that a face turned to the viewer shows about its own
+    // colour, rather than a paler one.
+    scene.environmentIntensity = 0.5;
     pmrem.dispose();
 
     model.traverse((node) => {
@@ -109,7 +115,7 @@
     const centre = box.getCenter(new THREE.Vector3());
     const radius = Math.max(size.length() / 2, 1e-3);
 
-    const sun = new THREE.DirectionalLight(0xffffff, 1.6);
+    const sun = new THREE.DirectionalLight(0xffffff, 1.0);
     sun.position.set(centre.x + radius * 1.5, box.max.y + radius * 3, centre.z + radius * 2);
     sun.target.position.copy(centre);
     sun.castShadow = true;
@@ -121,7 +127,7 @@
     sun.shadow.bias = -0.0005;
     sun.shadow.normalBias = radius * 0.004;
     scene.add(sun, sun.target);
-    scene.add(new THREE.HemisphereLight(0xffffff, 0x888888, 0.4));
+    scene.add(new THREE.HemisphereLight(0xffffff, 0x666666, 0.25));
 
     const light = opts.light !== undefined ? opts.light
       : document.documentElement.dataset.theme === "light";
@@ -156,7 +162,7 @@
       const high = THREE.MathUtils.degToRad(camera.fov / 2);
       const wide = Math.atan(Math.tan(high) * camera.aspect);
       const fit = radius / Math.sin(Math.min(high, wide));
-      camera.position.copy(centre).addScaledVector(toward, fit * 0.95);
+      camera.position.copy(centre).addScaledVector(toward, fit * 1.1);
       controls.target.copy(centre);
       camera.lookAt(centre);
       controls.update();
diff --git a/tests/test_model3d.py b/tests/test_model3d.py
index c878479..25ae739 100644
--- a/tests/test_model3d.py
+++ b/tests/test_model3d.py
@@ -70,6 +70,7 @@ def test_normals_agree_with_the_faces_they_light():
         {"shape": "box"}, {"shape": "sphere"}, {"shape": "cylinder"},
         {"shape": "cone"}, {"shape": "torus"},
         {"shape": "lathe", "points": [[0.2, 0], [0.5, 0.5], [0.1, 1]]},
+        {"shape": "text", "text": "Hi!"},
     ):
         geo = model3d.Part(0, spec).geometry
         for i in range(0, len(geo.indices), 3):
@@ -82,6 +83,61 @@ def test_normals_agree_with_the_faces_they_light():
             assert sum(f * n for f, n in zip(face, normal)) >= 0, spec
 
 
+def _pixels(char):
+    return sum(row.count("#") for row in model3d.FONT[char])
+
+
+def test_text_is_one_closed_block_to_a_pixel_of_the_font():
+    part = model3d.Part(0, {"shape": "text", "text": "minecraft",
+                            "height": 7, "depth": 2})
+    blocks = sum(_pixels(c) for c in "MINECRAFT")
+
+    # Closed and facing out, whatever blocks touch.
+    assert _volume(part.geometry) == pytest.approx(blocks * 2)
+    low = [min(p[i] for p in part.geometry.positions) for i in range(3)]
+    high = [max(p[i] for p in part.geometry.positions) for i in range(3)]
+    # Nine letters, a block of space between each; centred.
+    widths = sum(len(model3d.FONT[c][0]) for c in "MINECRAFT") + 8
+    assert high[0] - low[0] == pytest.approx(widths)
+    assert high[1] - low[1] == pytest.approx(7)
+    assert low[0] == pytest.approx(-high[0])
+    assert (low[2], high[2]) == pytest.approx((-1, 1))
+
+
+def test_touching_blocks_share_no_hidden_faces():
+    part = model3d.Part(0, {"shape": "text", "text": "-"})
+
+    # Three blocks in a row: each keeps its front, back, top and bottom
+    # (4 faces, 8 triangles), and only the two ends of the run show.
+    assert part.geometry.triangles == 3 * 4 + 3 * 4 + 2 * 2
+
+
+def test_text_lines_stack_centred():
+    one = model3d.Part(0, {"shape": "text", "text": "AB", "height": 7})
+    two = model3d.Part(0, {"shape": "text", "text": "AB\nC", "height": 7})
+
+    tall = max(p[1] for p in two.geometry.positions) - \
+        min(p[1] for p in two.geometry.positions)
+    assert tall == pytest.approx(7 + 2 + 7)
+    assert _volume(two.geometry) == pytest.approx(
+        _volume(one.geometry) + _pixels("C") * 1,
+    )
+
+
+def test_text_says_which_letters_the_font_lacks():
+    with pytest.raises(model3d.ModelError, match=r"no '#' '@'"):
+        model3d.Part(0, {"shape": "text", "text": "a@b#"})
+    with pytest.raises(model3d.ModelError, match="needs text"):
+        model3d.Part(0, {"shape": "text", "text": "  "})
+
+
+def test_every_glyph_is_seven_rows_of_one_width():
+    for char, rows in model3d.FONT.items():
+        assert len(rows) == model3d.FONT_ROWS, char
+        assert len({len(r) for r in rows}) == 1, char
+        assert set("".join(rows)) <= {"#", "."}, char
+
+
 def test_a_mesh_takes_polygons_and_checks_its_indices():
     square = {
         "shape": "mesh",

From 6203cf4222bfaefa0e888182fa25db071bb735bb Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Tue, 29 Sep 2026 18:58:57 +0000
Subject: [PATCH 5/8] fix: keep going when the model says what it will do and
 stops

A reply with no tool call ends the turn, so a model that looked at its
3D render, saw the grass block hiding the logo, and wrote "I'll move
the logo text forward" left the model broken, with no way to act on
what it had just noticed. The same happens after a failing test or a
bad screenshot.

When a reply ends by announcing its next step without the tool call
that takes it, Flash now keeps the reply on screen and in the history,
tells the model to do it (or say in one line why not), and carries on
the turn, at most twice a turn so a model that only ever promises is
let go. Only the last two sentences count, and offers, questions, and
waiting on a sub-agent or the user ("I'll report back", "let me know")
are not promises. The nudge is a system message, so like the wrap-up
nudge it is not kept once the turn ends. Both the terminal and the web
UI do this.

make_3d_model's preview note also now says to fix anything wrong in
the picture by calling the tool again before writing the reply.
---
 flash/ai.py       | 109 +++++++++++++++++++++++++++++++++++++++++++---
 flash/tools.py    |   4 +-
 flash/web.py      |  14 +++++-
 tests/test_ai.py  |  74 +++++++++++++++++++++++++++++++
 tests/test_web.py |  56 ++++++++++++++++++++++++
 5 files changed, 249 insertions(+), 8 deletions(-)

diff --git a/flash/ai.py b/flash/ai.py
index 5a3eb1f..d8d2540 100644
--- a/flash/ai.py
+++ b/flash/ai.py
@@ -987,6 +987,58 @@ def _tool_limit_message() -> dict:
     }
 
 
+# A reply that ends by saying what it will do next, with no tool call
+# to do it: the model saw something to fix (in a render, a test run, a
+# screenshot) and wrote the plan down instead of carrying it out. The
+# turn would end there with nothing done, so Flash asks it to go on.
+_PROMISE = re.compile(
+    r"\b(?:I['’]ll|I will|I['’]m going to|I am going to|let me|"
+    r"let['’]s)\s+"
+    # Waiting on a sub-agent or the user is a right place to stop.
+    r"(?!know\b|be\b|leave\b|keep\b|stop\b|wait\b|report\b|notify\b"
+    r"|let you\b|get back\b|check back\b|update you\b|tell you\b)"
+    r"[a-z]+",
+    re.IGNORECASE,
+)
+# Offers and questions leave the next move to the user, rightly.
+_OFFER = re.compile(
+    r"\b(?:if you(?:['’]d)? (?:like|want|prefer)|would you like|"
+    r"want me to|shall I|should I|let me know|happy to|just say|"
+    r"can also|could also)\b",
+    re.IGNORECASE,
+)
+_SENTENCE_END = re.compile(r"(?<=[.!?:])\s+")
+MAX_PROMISE_NUDGES = 2
+PROMISE_NOTE = (
+    "Your last reply said what you would do next, but it called no "
+    "tool, so nothing was done and your turn would end there. Do it now "
+    "with the tools, and keep going until it is finished and checked. "
+    "If you have decided not to, say why in one line instead."
+)
+
+
+def unkept_promise(text: str) -> bool:
+    """Whether a reply ends promising work it did not start."""
+
+    paragraphs = [p for p in re.split(r"\n\s*\n", text.strip()) if p]
+    if not paragraphs:
+        return False
+    # Only how it ends counts: "I'll" early on is usually a summary of
+    # what was done, while the last words are what happens next.
+    sentences = _SENTENCE_END.split(paragraphs[-1].strip())
+    tail = " ".join(sentences[-2:])
+    if tail.rstrip().endswith("?") or _OFFER.search(tail):
+        return False
+    return bool(_PROMISE.search(tail))
+
+
+def promise_nudge() -> dict:
+    """Flash telling the model to do what it just said it would. A
+    system message, so it is not kept in the history after the turn."""
+
+    return {"role": "system", "content": PROMISE_NOTE}
+
+
 def _response_parts(response) -> tuple[str, str, list]:
     message = getattr(response, "message", None)
 
@@ -1334,6 +1386,40 @@ def _chat_retry_until_response(
     return final, thinking, tool_calls, None
 
 
+def _chat_until_acted(
+    console: Console,
+    client: "ollama.Client",
+    convo: list,
+    tools_arg,
+    nudged: list,
+    *,
+    is_image: bool = False,
+    turn: Optional[Turn] = None,
+    bar: Optional[Callable[[], str]] = None,
+) -> tuple[str, str, list, Optional[str]]:
+    """`_chat_retry_until_response`, except that a reply promising work
+    it made no tool call for is shown, and the model is told to do it,
+    up to MAX_PROMISE_NUDGES times a turn. CONVO grows by that reply
+    and the nudge; NUDGED, a one-item list, counts the turn's nudges."""
+
+    while True:
+        final, thinking, tool_calls, err = _chat_retry_until_response(
+            console, client, convo, tools_arg,
+            is_image=is_image, turn=turn, bar=bar,
+        )
+        if (err or tool_calls or not tools_arg
+                or nudged[0] >= MAX_PROMISE_NUDGES
+                or not unkept_promise(final)):
+            return final, thinking, tool_calls, err
+        nudged[0] += 1
+        _render_thinking(thinking)
+        _render_markdown(console, final)
+        convo.append(_message("assistant", final))
+        convo.append(promise_nudge())
+        # Any picture went with the call just made.
+        is_image = False
+
+
 def _context_ceiling() -> Optional[int]:
     """The longest window the active model could do, asked once."""
 
@@ -2928,14 +3014,25 @@ def redraw_banner() -> None:
             def bar() -> Text:
                 return _bar_text(messages)
 
-            final, thinking, tool_calls, err = _chat_retry_until_response(
-                console, client, [system_message] + messages, offered,
+            nudged = [0]
+            first = [system_message] + messages
+            final, thinking, tool_calls, err = _chat_until_acted(
+                console, client, first, offered, nudged,
                 is_image=bool(pending_images), turn=turn, bar=bar,
             )
-            if err:
+            if err and not nudged[0]:
                 _print_backend_error(err)
                 messages.pop()
                 continue
+            # A reply that promised work and was told to do it stays in
+            # the history, as the user saw it; the nudge does not.
+            messages.extend(
+                m for m in first[1 + len(messages):]
+                if m.get("role") != "system"
+            )
+            if err:
+                _print_backend_error(err)
+                continue
 
             subagents.mark_delivered(delivered_ids)
             if not woken:
@@ -3009,9 +3106,9 @@ def bar() -> Text:
                         _message("user", TOOL_IMAGE_NOTE, tool_images)
                     )
 
-                final, thinking, tool_calls, err = _chat_retry_until_response(
-                    console, client, tool_messages, offered, turn=turn,
-                    is_image=bool(tool_images), bar=bar,
+                final, thinking, tool_calls, err = _chat_until_acted(
+                    console, client, tool_messages, offered, nudged,
+                    turn=turn, is_image=bool(tool_images), bar=bar,
                 )
                 if err:
                     tool_error = err
diff --git a/flash/tools.py b/flash/tools.py
index 93e9485..f53f813 100644
--- a/flash/tools.py
+++ b/flash/tools.py
@@ -2636,7 +2636,9 @@ def _model_preview(model_path: Path) -> str:
     note = (
         "A picture of it, as the user's viewer first shows it (from the "
         "front right, above), is attached, so judge the shape from what "
-        "you can see there."
+        "you can see there. If anything is wrong in it (a part hidden, "
+        "floating, or out of place), fix it now by calling the tool "
+        "again, before you write your reply."
     )
     if problems:
         note += " The viewer reported: " + "; ".join(
diff --git a/flash/web.py b/flash/web.py
index 506a85c..b08bae2 100644
--- a/flash/web.py
+++ b/flash/web.py
@@ -1483,6 +1483,7 @@ def run_turn(
         convo = [system, *chat.messages]
         keep_from = len(convo)
         tool_count = 0
+        nudged = 0
         reply = Streamed()
 
         for _round in range(ai.Config.max_tool_rounds):
@@ -1490,7 +1491,18 @@ def run_turn(
             tokens += reply.tokens
             generating += reply.seconds
 
-            if reply.stopped or not reply.calls:
+            if reply.stopped:
+                break
+            if not reply.calls:
+                # It said what it would do next and stopped short of
+                # doing it: keep what it said, and tell it to go on.
+                if (offered and nudged < ai.MAX_PROMISE_NUDGES
+                        and ai.unkept_promise(reply.content)):
+                    nudged += 1
+                    _finish_reply(session, chat, reply)
+                    convo.append(ai._message("assistant", reply.content))
+                    convo.append(ai.promise_nudge())
+                    continue
                 break
 
             _finish_reply(session, chat, reply)
diff --git a/tests/test_ai.py b/tests/test_ai.py
index 2bc5af1..4ea09ec 100644
--- a/tests/test_ai.py
+++ b/tests/test_ai.py
@@ -532,3 +532,77 @@ def test_a_bang_command_with_no_output_or_a_timeout(monkeypatch):
 
     assert "$ touch x\nexit 0\n" in block  # nosec B101
     assert "$ sleep 999\ntimed out after 600s" in block  # nosec B101
+
+
+# --- Promises the model does not keep --------------------------------------
+
+
+@pytest.mark.parametrize("text", [
+    "Wait, the block is completely covering the text. I'll move the "
+    "logo text forward so it sits in front of the grass block.",
+    "The fin is off. Let me fix that.",
+    "The test still fails.\n\nNow I\u2019ll update the fixture.",
+    "Next, I will add windows to the house.",
+    "I'm going to rerun the build.",
+])
+def test_a_reply_ending_in_a_plan_is_a_promise(text):
+    assert ai.unkept_promise(text)  # nosec B101
+
+
+@pytest.mark.parametrize("text", [
+    "Done! The model is saved as chair.glb.",
+    "I'll move it forward if you'd like.",
+    "Would you like me to add a door?",
+    "Let me know if you want changes.",
+    "Want me to add a roof? I can also make it red.",
+    "I'll be here if you need anything.",
+    "Started a sub-agent; I'll report back.",
+    "I'll wait for the build, then let you know.",
+    "I'll let you know when it finishes.",
+    "Now I have finished everything.",
+    # A plan early on, then a finish, is a summary.
+    "I'll start with the legs.\n\nEverything is built and checked.",
+    "",
+])
+def test_a_finished_reply_or_an_offer_is_not(text):
+    assert not ai.unkept_promise(text)  # nosec B101
+
+
+def test_the_terminal_tells_a_promising_model_to_go_on(monkeypatch):
+    replies = [
+        ("I'll move the text forward.", "", [], None),
+        ("", "", ["a call"], None),
+    ]
+    seen = []
+
+    def fake(console, client, convo, tools_arg, **_):
+        seen.append(list(convo))
+        return replies.pop(0)
+
+    monkeypatch.setattr(ai, "_chat_retry_until_response", fake)
+    monkeypatch.setattr(ai, "_render_markdown", lambda *a, **k: None)
+    convo = [{"role": "user", "content": "logo"}]
+    nudged = [0]
+
+    final, _, calls, err = ai._chat_until_acted(
+        None, None, convo, ["tools"], nudged,
+    )
+
+    assert (calls, err, nudged) == (["a call"], None, [1])  # nosec B101
+    assert convo[-2:] == [  # nosec B101
+        {"role": "assistant", "content": "I'll move the text forward."},
+        ai.promise_nudge(),
+    ]
+    assert len(seen) == 2  # nosec B101
+
+
+def test_without_tools_there_is_nothing_to_nudge_towards(monkeypatch):
+    monkeypatch.setattr(
+        ai, "_chat_retry_until_response",
+        lambda *a, **k: ("I'll fix it.", "", [], None),
+    )
+    nudged = [0]
+
+    final, *_ = ai._chat_until_acted(None, None, [], None, nudged)
+
+    assert (final, nudged) == ("I'll fix it.", [0])  # nosec B101
diff --git a/tests/test_web.py b/tests/test_web.py
index 1d84465..7eee04b 100644
--- a/tests/test_web.py
+++ b/tests/test_web.py
@@ -107,6 +107,62 @@ def test_a_reply_streams_token_by_token(self):
         stats = next(e for e in seen if e["type"] == "stats")
         assert (stats["tokens"], stats["rate"]) == (4, 10.0)
 
+    def test_a_reply_that_promises_work_is_told_to_do_it(self):
+        FakeClient.scripts = [
+            [part(calls=[call("get_date")]), part(done=True)],
+            # It sees the problem and says what it will do, then stops.
+            [part("Wait, the block covers the text. I'll move the logo "
+                  "text forward."), part(done=True)],
+            [part(calls=[call("get_date")]), part(done=True)],
+            [part("Fixed: the text is in front now."), part(done=True)],
+        ]
+        session = web.Session()
+        drain = events_of(session)
+        chat = session.new_chat()
+
+        run(session, chat, "make the minecraft logo")
+
+        said = [e["text"] for e in drain()
+                if e["type"] == "assistant" and e["text"]]
+        assert said[-2:] == [
+            "Wait, the block covers the text. I'll move the logo text "
+            "forward.",
+            "Fixed: the text is in front now.",
+        ]
+        # The model was told to go on, right after its promise.
+        sent = FakeClient.requests[-1]["messages"]
+        at = sent.index({"role": "system", "content": ai.PROMISE_NOTE})
+        assert "I'll move the logo" in sent[at - 1]["content"]
+        assert len(FakeClient.requests) == 4
+        # The history keeps what the user saw, not Flash's nudge.
+        kept = [m.get("content") for m in chat.messages]
+        assert ai.PROMISE_NOTE not in kept
+        assert kept[-1] == "Fixed: the text is in front now."
+        assert any("I'll move the logo" in (c or "") for c in kept)
+
+    def test_a_model_that_keeps_promising_is_let_go(self):
+        promise = [part("I'll fix it."), part(done=True)]
+        FakeClient.scripts = [promise, promise, promise]
+        session = web.Session()
+        chat = session.new_chat()
+
+        run(session, chat, "fix it")
+
+        # Asked twice, then its word is taken as the answer.
+        assert len(FakeClient.requests) == 1 + ai.MAX_PROMISE_NUDGES
+        assert chat.messages[-1]["content"] == "I'll fix it."
+
+    def test_an_offer_is_not_a_promise(self):
+        FakeClient.scripts = [
+            [part("Done. I'll add a roof if you'd like."), part(done=True)],
+        ]
+        session = web.Session()
+        chat = session.new_chat()
+
+        run(session, chat, "make a house")
+
+        assert len(FakeClient.requests) == 1
+
     def test_a_streamed_reply_comes_without_dashes(self):
         FakeClient.scripts = [[
             part("It works \u2014"), part(" mostly, pages 1\u2013"),

From f5be77ddc86a48714e07c070ca4ea7cd2865f6a9 Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Tue, 29 Sep 2026 22:51:35 +0000
Subject: [PATCH 6/8] prompt: test scripts go in scratch, what the user asked
 for in Downloads

The prompt disagreed with itself about where files go: charts went to
the scratch directory (gone when Flash exits), documents to the working
directory, and Downloads was only a fallback for when that directory
was too broad. Replace the scratch section with one rule, three places:

- scratch: test scripts, check scripts, the scripts that draw charts or
  build documents, samples, drafts, and anything downloaded on the way
- Downloads: a finished thing the user asked for (a picture, chart,
  PDF, document, page, 3D model, or a script to keep), with a clear
  name, never overwriting a file of theirs
- the project: changes to the codebase, including tests the user asked
  to add to its suite

A place the user names always wins. The agent finds the Downloads folder
itself with a shell command, once, rather than guessing, since Windows
often moves it and Linux names it in the user's language. The chart,
document, and make_3d_model instructions now follow the same rule.
---
 flash/system_prompt.txt | 17 ++++++++++-------
 flash/tools.py          | 20 +++++++++++++-------
 2 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/flash/system_prompt.txt b/flash/system_prompt.txt
index 8cc0da5..e7acdcc 100644
--- a/flash/system_prompt.txt
+++ b/flash/system_prompt.txt
@@ -46,7 +46,7 @@ When you make an image, a PDF, a web page, a document, or a 3D model for the use
 
 Check before you send, and check for the exact problem the user reported (overlapping lines, a wrong arrow, cut-off text). If you can still see it, or cannot tell, say so plainly. Never tell the user a problem is fixed because you changed the code meant to fix it: it is fixed when you looked and it was gone.
 
-Revise in place: `edit` the script that makes the file and overwrite the same output, instead of writing numbered copies (v2, fixed, final_v8) that pile up. Scripts and drafts belong in the scratch directory; only the finished file goes where the user wants it. A file that is part of a codebase you are editing (a component, a template, a source file) is not a deliverable: don't send those.
+Revise in place: `edit` the script that makes the file and overwrite the same output, instead of writing numbered copies (v2, fixed, final_v8) that pile up. Scripts and drafts belong in the scratch directory; only the finished file goes to Downloads, or wherever the user asked. A file that is part of a codebase you are editing (a component, a template, a source file) is not a deliverable: don't send those.
 
 == Reading a web page (fetch) ==
 `fetch` takes an http:// or https:// URL and returns the page as text. It is the cheap way to read what a page says: documentation, an article, a README, a changelog, an API reference, a raw file, a JSON endpoint (non-HTML content comes back untouched). Follow a `web_search` result by fetching the URL it gave you, because a search snippet is an advertisement for a page and the qualifier that changes your answer is usually inside the page itself.
@@ -126,11 +126,14 @@ Sending a natural-language reply ends your turn, so gather everything you need b
 
 When a question needs working out (math, logic, a tricky bug), work it out step by step in your reply before you give the answer, and put the answer last. An answer written first and justified after is a guess.
 
-== Scratch directory ==
-Every dummy, sample, test, placeholder, or throwaway file goes in the scratch directory, always, even when the user asked you to make it: a file to try a command on, sample data, a test image, a quick script to check something. Only a location the user names changes that.
-Write it by its full path inside the scratch directory, in every tool and every shell command. A bare file name, with no folder in front, lands in the working directory, which is the user's project.
+== Where files go ==
+Every file you write goes in one of three places. A place the user names always wins.
 
-Your scratch directory path is given verbatim in the Tool System Prompt below: copy it exactly, character for character, and never look it up. If a write there fails, the path is wrong: copy it again, never write into the user's project instead. Put downloads and intermediate output there too, never in the user's project, home directory, or working directory, and delete each temp file with `shell` as soon as you're done with it, before you reply, unless the user wants to look at it. Files the user asked for to keep and use (a script for their project, a config, a report) are real output: write those where they belong and leave them. If the destination is unclear and the working directory is too broad to write into (a home directory, a filesystem root), use a sensible default such as Downloads, or ask.
+1. The scratch directory, for everything that helps you work: test scripts, a quick script to check something, the script that draws a chart or builds a document, sample data, a file to try a command on, drafts, files you download along the way, and any other dummy, sample, test, placeholder, or throwaway file, even one the user asked you to make. Delete each one with `shell` once you are done with it, before you reply, unless the user wants to look at it.
+2. The user's Downloads folder, for a finished thing the user asked you to make: a picture, chart, PDF, document, spreadsheet, web page, 3D model, or a standalone script or program for them to keep. Give it a short, clear name, and pick a new name rather than overwrite a file of theirs already there; a new version of something you made in this chat replaces your own earlier file.
+3. The project, for changes to the codebase you are working in: its source, its config, and tests the user asked you to add to its test suite. Put those where the project keeps them.
+
+The scratch directory's path is given verbatim in the Tool System Prompt below: copy it exactly, character for character, and never look it up. The Downloads folder you find yourself, once per session, before the first file you save there: with `shell`, ask the system where it is rather than guessing (on Windows it is often moved, into OneDrive or onto another drive, and `(New-Object -ComObject Shell.Application).Namespace('shell:Downloads').Self.Path` gives it; on Linux, `xdg-user-dir DOWNLOAD`, which may be a name in the user's language; on macOS, `~/Downloads`), and create it if it is missing. Write every file by its full path, in every tool and every shell command. A bare file name, with no folder in front, lands in the working directory, which is the user's project; never leave scripts, tests, or output there by accident. If a write to the scratch directory fails, the path is wrong: copy it again, never write into the user's project instead. When you finish, tell the user the full path of anything you saved for them.
 
 == Charts and diagrams ==
 Making a chart, graph, plot, or diagram means writing a Python script that draws it, running that script with `shell`, and sending the picture it made with `send_image`.
@@ -141,12 +144,12 @@ Mermaid and other diagram code do not render here: a diagram written as text rea
 3. Look at the PNG with `view_image`: labels readable, nothing overlapping, axes and title named.
 4. Send it with `send_image`. To change it, `edit` the script, run it again, and send the new version.
 
-Save the PNG where the user asked, or in the scratch directory when they named no place: sending it is how they get it.
+Save the PNG in Downloads, or where the user asked, and send it.
 
 == Documents (.docx and .pdf) ==
 `read` opens .pdf and .docx files directly and returns their text with line numbers; don't shell out to a script just to read one. A legacy .doc isn't supported: tell the user to save it as .docx. A PDF with no extractable text (a scan) comes back as an explicit error: treat it as unreadable, not empty.
 
-To make one, run a short Python script with `shell`: `python-docx` (imported as `docx`) for .docx, `fpdf2` (imported as `fpdf`) for simple PDFs, `reportlab` for finer layout. Install the library non-interactively first (`python -m pip install --quiet <package>`, `python3` outside Windows); if that fails, tell the user which package to install. Write the script in the scratch directory and delete it afterwards, write the document where the user asked (or the working directory with a sensible name), check it exists and is non-empty, report its full path, and send a PDF with `send_pdf`.
+To make one, run a short Python script with `shell`: `python-docx` (imported as `docx`) for .docx, `fpdf2` (imported as `fpdf`) for simple PDFs, `reportlab` for finer layout. Install the library non-interactively first (`python -m pip install --quiet <package>`, `python3` outside Windows); if that fails, tell the user which package to install. Write the script in the scratch directory and delete it afterwards, write the document to Downloads with a sensible name (or where the user asked), check it exists and is non-empty, report its full path, and send a PDF with `send_pdf`.
 
 == Describing a project ==
 Never answer from a directory listing, file name, or repo name alone. Gather evidence from inside the folder the user named, by full path: list a couple of levels of the tree, read its README (try README.rst, README.txt, docs/README.md if the obvious name fails), read the manifest (pyproject.toml, package.json, Cargo.toml, go.mod, pom.xml), and if both are missing, read the entry point and the central source files. Then explain, naming the file each claim came from: what it is and the problem it solves, how it's built and run, how it's laid out, and what a new contributor needs to know (entry points, configuration, tests). If you find yourself writing "likely" or "it appears", go read more first. Skip the git status unless asked.
diff --git a/flash/tools.py b/flash/tools.py
index f53f813..a8bddf1 100644
--- a/flash/tools.py
+++ b/flash/tools.py
@@ -208,11 +208,16 @@
 Your temporary scratch directory is: {SCRATCH_DIR}
 It will be deleted when the program exits. Use it for temporary files, but do
   not assume it will persist across runs.
-Always use the scratch directory for temporary files, including dummy,
-  sample, and test files the user asks for, and write them by their full
-  path there. Never write them to the user's home directory, other
-  directories, or the current working directory unless the user names
-  that place.
+Always use the scratch directory for temporary files, including test
+  scripts, and dummy, sample, and test files the user asks for, and write
+  them by their full path there. Never write them to the user's home
+  directory, other directories, or the current working directory unless
+  the user names that place.
+Save a finished file the user asked for (a picture, chart, PDF, document,
+  page, 3D model, or a script for them to keep) in their Downloads folder
+  by its full path, unless they name another place or it is a change to
+  the project you are working in. Find that folder's path once with a
+  shell command before the first such write.
 """.strip()
 
 now = datetime.now()  # noqa: DTZ005
@@ -3584,8 +3589,9 @@ def interact(
                     "path": {
                         "type": "string",
                         "description": (
-                            "Where to save it, ending in .glb, such as "
-                            "chair.glb."
+                            "Full path to save it at, ending in .glb: in "
+                            "the user's Downloads folder, as chair.glb "
+                            "there, unless they named another place."
                         ),
                     },
                     "parts": {

From 111125effcc584d29c7c3a625000964b8521bf53 Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Wed, 30 Sep 2026 02:33:30 +0000
Subject: [PATCH 7/8] Bump version to 0.5.12

---
 flash/version.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flash/version.py b/flash/version.py
index 942c51a..a48e612 100644
--- a/flash/version.py
+++ b/flash/version.py
@@ -1,4 +1,4 @@
-__version__ = "0.5.11"
+__version__ = "0.5.12"
 
 REPO = "Natuworkguy/Flash"
 REPO_URL = f"https://github.com/{REPO}"

From 172245c0b58ff01cda3b0b0b9c8b7cbecd72632b Mon Sep 17 00:00:00 2001
From: "Nathan C." <149914029+Natuworkguy@users.noreply.github.com>
Date: Wed, 30 Sep 2026 02:38:58 +0000
Subject: [PATCH 8/8] fix: refuse a web UI port already in use on Windows

Python's HTTP server binds with SO_REUSEADDR. On Linux and macOS that
only lets a restart take back a port its closed connections still hold,
but on Windows it lets a second server bind a port another is already
listening on, and the two then split its connections: a second
`flash --web` would quietly share port 7433 with the first instead of
saying the port is taken. Which bind wins is not fixed, so
test_a_port_in_use_says_so failed on Windows only some of the time.

Leave SO_REUSEADDR off on Windows, where a plain bind already refuses a
port in use and still reuses one straight after a LAN switch closes it.
---
 flash/web.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/flash/web.py b/flash/web.py
index b08bae2..fc29494 100644
--- a/flash/web.py
+++ b/flash/web.py
@@ -2678,6 +2678,12 @@ def _events(self) -> None:
 
 class Server(ThreadingHTTPServer):
     daemon_threads = True
+    # SO_REUSEADDR only lets a restart take back a port its old
+    # connections still hold, on Linux and macOS. On Windows it lets a
+    # second server bind a port another is listening on, and the two
+    # then split its connections; and Windows lets a port be reused
+    # without it anyway.
+    allow_reuse_address = os.name != "nt"
 
     def __init__(
         self,