feat: richer nebula sky and planet surface textures

Extend gen_nebula_sky.py with two more dust-lane layers at different
scales and subtle hue variation within the bright core. Add
gen_planet_surface.py (no prior generator existed) producing latitude
bands, storm vortices, and a lit/unlit terminator baked from the
planet mesh's actual UV convention against arena_02's directional
light, verified in-engine via screenshots.
This commit is contained in:
Josh Creek
2026-08-04 07:18:51 +01:00
parent 3257f5cbcc
commit 73fb83a0da
6 changed files with 223 additions and 1 deletions
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