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feat(editor): add --gen-texture-crackle Voronoi cell-boundary

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78th procedural texture: fine cracks following Voronoi cell
boundaries. For each pixel, the algorithm finds the two
nearest jittered cell centers (across 9 surrounding cells);
the difference between (distance to second-nearest) and
(distance to nearest) approximates distance to the cell
boundary line. Pixels under crackW from the boundary get
the crack color; inside cells get the base.

Distinct from --gen-texture-cracked (wide stone cracks at
large scale via random walk) and --gen-texture-frost
(6-spike crystal rosettes from seeded points) — crackle
is the fine-mud / dry-leather / parched-earth variant for
desert ground / aged-document / drought-cracked-mud zones.

Useful for desert-floor zones, aged-leather armor sections,
parched-earth dungeon floors, dragon-burned ground,
mummified-flesh trim, ancient-document parchment.
This commit is contained in:
Kelsi 2026-05-09 13:56:41 -07:00
parent dc29f7f135
commit 8c79b732e3
3 changed files with 92 additions and 1 deletions
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2
tools/editor/cli_arg_required.cpp
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@ -115,7 +115,7 @@ const char* const kArgRequired[] = {
"--gen-texture-ironbark", "--gen-texture-mold",
"--gen-texture-embroidery", "--gen-texture-lightbeam",
"--gen-texture-dewdrops", "--gen-texture-pinwheel",
"--gen-texture-scratched-metal",
"--gen-texture-scratched-metal", "--gen-texture-crackle",
"--validate-glb", "--info-glb", "--info-glb-tree", "--info-glb-bytes",
"--validate-jsondbc", "--check-glb-bounds", "--validate-stl",
"--validate-png", "--validate-blp",