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The globe draws the poles as they are, and nothing while idle

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The globe is a UV sphere: towards the poles its triangles narrow to
slivers, and texture coordinates interpolated across them pinched the
map into a star around each pole. Each pixel now computes its own
coordinates from its exact point on the sphere, with seam-safe mipmap
gradients; the map wraps horizontally and gets 8x anisotropic
filtering.

That showed a flaw in the day texture: NASA's mosaic has a lighter
strip at its east edge near the poles, a line from each pole once drawn
exactly. The day texture is now built from NASA's original Blue Marble
(December 2004) by tools/globe/prepare-day-texture.py, which blends
that strip into the map where both sides of the seam agree; same
4096x2048 size, provenance and hashes in SOURCES.md.

globe.gl redrew 60 times a second even when nothing moved; it now draws
only during camera flights, hover pulses, auto-rotation and the
reader's drags, so an idle globe costs no GPU time.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
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thepraandClaude Opus 5.5 committed 2026-10-04 17:46:44 +02:00
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wwwroot/vendor/globe/SOURCES.md
Vendored
+9 -3
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@@ -1,12 +1,18 @@
# The globe's vendored files
Copied once from the npm registry (registry.npmjs.org) on 2026-10-04; the build and the app never fetch them from
anywhere else. To update, download the new tarballs from the registry, copy the same files, and replace the hashes.
Copied once on 2026-10-04 from the npm registry (registry.npmjs.org) and, for the day texture, from NASA
(eoimages.gsfc.nasa.gov); the build and the app never fetch them from anywhere else. To update, download the new files,
copy them the same way (the day texture through `tools/globe/prepare-day-texture.py`), and replace the hashes.
NASA's mosaic does not wrap cleanly at the 180° meridian near the poles (a lighter strip at its east edge), which the
globe, drawing each pixel at its exact place, shows as a line from each pole; the script blends that strip into the
map on both sides, only on rows where the two sides agree, and gives the rows within half a degree of each pole one
colour.
| File | From | Licence | sha256 |
|---|---|---|---|
| `globe.gl.min.js` | `globe.gl` 2.46.2, `dist/globe.gl.min.js` (UMD, defines `window.Globe`) | MIT, `LICENSE-globe.gl` | `2c3e445c04d121215910a89688b96091c8a72071c122a4f830081a39b636c94c` |
| `earth-blue-marble.jpg` | `three-globe` 2.45.3, `example/img/earth-blue-marble.jpg`, 4096×2048 | NASA Visible Earth "Blue Marble", public domain | `228deba2e4b600146bdcb6cfa359b8ead6aacc2b1c13550a29cd82824cfa1c01` |
| `earth-blue-marble.jpg` | NASA Visible Earth, Blue Marble Next Generation with topography and bathymetry, December 2004 (`world.topo.bathy.200412.3x5400x2700.jpg`, sha256 `a9f0088972dee0254610af851c4d6838ca3f2cf79176987e0a5713e2c15ec042`), seam repaired and scaled to 4096×2048 by `tools/globe/prepare-day-texture.py` | NASA, public domain | `1334612d91d5104afb0e48cce916e100575c2969baf99e21454c23535f4ce713` |
| `earth-night.jpg` | `three-globe` 2.45.3, `example/img/earth-night.jpg`, 4096×2048 | NASA Earth Observatory "Black Marble" (city lights), public domain | `355ab23dd1323315b393d7b91dd2d7ee223a1cbaaba2b48dc72ba90d371ced24` |
`globe.gl.min.js` bundles its dependencies: three.js r185 (MIT, © 2010–2026 three.js authors), three-globe (MIT, © 2019