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feat(sky): replace the blocky default sky box with catalogue stars

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Cesium's default Tycho-2 sky box is six 1024² JPEGs stretched 3–6× around
the whole-globe view, so space read as an over-compressed JPEG (HAL-627).

The scene now draws its own sky in the Scene#skyBox slot: the 9,096 stars
of the Yale Bright Star Catalogue as point sprites sized in CSS pixels
(magnitude → width and opacity, B−V → colour), over a soft, star-free
Milky Way cube map built from ESO/S. Brunier's panorama (CC BY 4.0). Both
layers share one ICRF→Earth-fixed rotation at the scene clock, with the
TEME rotation filling in until Cesium's IAU 2006 tables load.

Assets total 482 KB, built by scripts/build-bright-stars.mjs and
scripts/build-milky-way.mjs. Frame time and the idle render governor are
unchanged.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
This commit is contained in:
German KhokhlovandClaude Opus 5.5 committed 2026-10-19 11:08:46 +04:00
1 parent 93ea088f45
commit 6549344946
20 files changed
+10644 -2
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scripts/format-scope.json
+6 -1
View File
@@ -1062,5 +1062,10 @@
"src/ui/flyToDataSource.test.mjs",
"scripts/assemble-changelog.mjs",
"src/tooling/changelogFragments.test.mjs",
"src/data/gbfsProxyRateLimit.test.mjs"
"src/data/gbfsProxyRateLimit.test.mjs",
"scripts/build-bright-stars.mjs",
"scripts/build-milky-way.mjs",
"src/sky/stars.test.mjs",
"src/sky/starrySky.test.mjs",
"src/tooling/skyAssets.test.mjs"
]