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feat(editor): add --gen-texture-corrugated metal-sheet ridges

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50th procedural texture: smooth cosine ridges that lerp
between bgHex (trough) and hiHex (crest) over a configurable
period. Direction defaults to vertical ridges (wave varies
along X) — the standard corrugated-sheet-metal-roof look —
with optional horizontal mode for siding panels and pipe
texturing.

Useful for sheet-metal roofing, corrugated-iron walls,
sci-fi paneling, and any "ridged plate" surface where the
existing flat --gen-texture-metal would read as too uniform.

Default 16px period at 256x256 reads cleanly with about 16
ridges across the tile.
This commit is contained in:
Kelsi 2026-05-09 10:50:46 -07:00
parent 4455a4eb6f
commit a7989cc7ab
3 changed files with 77 additions and 1 deletions
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2
tools/editor/cli_help.cpp
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@ -133,6 +133,8 @@ void printUsage(const char* argv0) {
std::printf(" Chainmail: brick-offset ring outlines for armor/mail textures (interlocking metal rings)\n");
std::printf(" --gen-texture-planks <out.png> <bgHex> <seamHex> [plankH] [grains/plank] [seed] [W H]\n");
std::printf(" Planks: horizontal floor boards with per-plank tint, grain streaks, and stagger seams\n");
std::printf(" --gen-texture-corrugated <out.png> <bgHex> <hiHex> [period] [v|h] [W H]\n");
std::printf(" Corrugated: smooth cosine ridges between bg and hi (sheet-metal roofing / siding)\n");
std::printf(" --add-texture-to-zone <zoneDir> <png-path> [renameTo]\n");
std::printf(" Copy an existing PNG into <zoneDir> (optionally renaming it on the way in)\n");
std::printf(" --gen-mesh <wom-base> <cube|plane|sphere|cylinder|torus|cone|ramp> [size]\n");