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feat: Via Láctea real — mapa all-sky do Gaia amostrado por pixel

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Substitui a simulação procedural pelo mapa "Gaia's sky in colour"
(ESA/Gaia/DPAC, CC BY-SA 3.0 IGO): tools/build_skymap.py baixa o
original 8000x4000 em projeção Hammer, reprojeta para plate carrée e
gera milkyway.jpg (3072x1536). O dancer.html amostra a textura por
pixel em (l,b) galácticas reais — grade pré-computada por resolução/
latitude, com só a rotação sideral variando por passo (matriz E2G·Rz
combinada). Nível de preto remove o véu de fundo do mapa; extinção e
clarão aplicados por pixel. Remove mwGlow/mwGrain/poeira procedural.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015HtPHsTnDcLVSCiF5FGHZj
This commit is contained in:
vini 2026-07-19 11:23:32 -03:00
parent 2014dcf9b7
commit c4c9574946
4 changed files with 168 additions and 171 deletions
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CLAUDE.md
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@ -34,8 +34,10 @@ plugin/
main.qml # Plasma WallpaperItem — hosts everything
dancer.html # Self-contained animation (HTML + CSS + JS)
starcatalog.js # Generated star data (Yale BSC) — see tools/build_catalog.py
milkyway.jpg # Gaia all-sky map (ESA/Gaia/DPAC, CC BY-SA 3.0 IGO) — see tools/build_skymap.py
tools/
build_catalog.py # Regenerates starcatalog.js from the Yale Bright Star Catalog
build_skymap.py # Regenerates milkyway.jpg (Hammer -> plate carrée) from ESA's Gaia map
```
### main.qml — the Plasma host
@ -50,7 +52,7 @@ Pure HTML/CSS/JS, no external dependencies. All visuals are self-contained:
| Layer | Technique |
|---|---|
| Realistic sky (stars + Milky Way) | `<canvas>`; real-time alt-az projection of `starcatalog.js` (2,887 Yale BSC stars) + seeded procedural Milky Way for the configured lat/long (default Toledo-PR). Static layer pre-rendered offscreen, bright stars twinkle per frame; reprojects every 30 s. Debug: `window.__skyTimeOffset` (ms) fast-forwards the sky |
| Realistic sky (stars + Milky Way) | `<canvas>`; real-time alt-az projection of `starcatalog.js` (2,887 Yale BSC stars) + per-pixel sampling of the real Gaia all-sky map (`milkyway.jpg`) in galactic coords, for the configured lat/long (default Toledo-PR), view facing east. Static layer pre-rendered offscreen, bright stars twinkle per frame; reprojects every 30 s. Debug: `window.__skyTimeOffset` (ms) fast-forwards the sky |
| Nebula blobs, grid floor, horizon | CSS animations |
| DANCEBOT-9000 robot | Pure CSS (divs + `@keyframes`) |
| Chest EQ bars & VU meter | JS-driven `requestAnimationFrame` |