thepraandClaude Opus 5.5
69d0a641fe
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