UMBRA / ARC–97

UMBRA / ARC–97 is a fictional, original mega-scale stellar-matter instrument. The interactive model includes dynamic gimbal races, a photonic quadruple helix, synchronised emitter arms, configurable iris blades, radiator banks and 3D performance settings.

Controls: drag to orbit, scroll to zoom, click to inspect, Space to pause, R reset view, C cutaway, and keys 1–3 for camera presets. Presets are stored in this browser only.

Offline rendering: The included lightweight, locally authored Three-compatible WebGL2 layer runs without internet. The same procedural geometry scene is also compatible with upstream Three.js for production deployments; see docs/THREEJS_INTEGRATION.md.