DONNER

Explore structured data in 3D and XR.

A browser tab is the app. Same page on laptop, phone, and headset.

Surface	What you get
Online Demo	The app in the browser — curated cubes, AR / Face, Load or drop .npy, Source → Stream
Offline	Same app, for use without internet

Online Demo: https://donner.mess.engineering/

Offline: GitHub Releases — DONNER-vX.Y.Z-windows-x86_64.exe or DONNER-vX.Y.Z-linux-x86_64 (Linux: chmod +x, then run). Same app, for use without internet.

AR and XR tested on Pixel 11 Pro and Quest 3.

Explore in DONNER. Analyze in BLITZ.

DONNER is the 3D/XR explorer in WETTER. BLITZ is the 2D analysis sibling. They share datasets, not a GUI.

Open the Online Demo

Examples in Source, on the left.

• Brain MRI Low — static example T1 atlas, 2× binned (visitor default, Ghost, center and outer frames). Bottom AR uses the laptop webcam or a phone camera.
• Brain MRI High — the same atlas at native grid (Ghost).
• Lighter Ignition — static event-camera counts of a lighter strike (Ghost).
• Game of Life — live generator. Each cube is a living cell. Z is generations (Hull, outer box on).

Drag to orbit. Scroll to zoom. Drop a .npy count cube onto the volume. On a phone, pinch. On Quest, left stick walks the plane / cycles axis, right stick yaws / zooms; hold left stick click to Exit; X/Y cycle Source/Shade.

Source → Stream connects a sidecar on this computer. Offline is the same app from GitHub Releases, for use without internet.

Develop

npm start             # Local Viewer chrome on loopback (+ /stream-npy)
npm run start:demo    # Online Demo chrome on LAN (lab.ole.icu / phone)
npm run start:lan     # Local Viewer chrome on LAN
npm run start:viewer  # Go host from repo root
npm test

Architecture and surfaces: architecture.md.

Author

Philipp Mattern
M.E.S.S. – Mattern Engineering & Software Solutions

GPL-3.0. Example-cube notices: data/NOTICE.md.