Credits & licences
Everything Prism draws is generated in code. The handful of things it doesn't make itself are listed here.
Data
| What | Source | Terms |
|---|---|---|
| Star positions, names, constellations | HYG Database, David Nash / astronexus | CC BY-SA 4.0 — citation expected |
| Live aircraft positions | adsb.lol (primary) | ODbL — community-fed, no key |
| Live aircraft positions | OpenSky Network (fallback) | Non-commercial use, attribution required |
Night Sky labels its traffic honestly: when neither service answers, the aircraft on screen are marked simulated rather than passed off as real. See the note in Privacy about what is sent.
Audio
| File | Used by | If absent |
|---|---|---|
assets/rain-loop.mp3 | Rainy Window | Synthesised rain — filtered noise |
assets/thunder-a.mp3, thunder-b.mp3 | Rainy Window | Synthesised thunder |
assets/fire-loop.mp3 | Fireplace | Synthesised crackle |
Every one of these is optional and every room sounds complete without it. Confirm you hold the rights to any recording you drop in — Prism ships none of them itself, and the synthesised fallbacks are original.
Software
| What | Who | Licence |
|---|---|---|
| MediaPipe Tasks Vision — hand landmarker | Apache 2.0 | |
| Outfit, Fraunces, JetBrains Mono, Rajdhani | Various | SIL Open Font Licence 1.1 |
qrcode.js (vendored in arena/vendor/) | davidshimjs | MIT |
Self-hosting the fonts
Typefaces are currently requested from Google Fonts, which means your
visitors' IP addresses are visible to Google — a live issue under GDPR. All four
families are OFL-licensed, so you may host them yourself. Download the
.woff2 files, drop them in assets/fonts/, and replace
the @import line at the top of css/prism.css and each
room's stylesheet with local @font-face rules. Nothing else needs
to change; the font stacks already fall back to system faces.
Prism itself
The rooms, the physics, the shaders, the creature gaits, the synthesised audio and the camera-touch layer are original work. No third-party art or animation is used anywhere in the suite.