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feat(editor): add --gen-texture-zebra wavy-stripe pattern

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46th procedural texture: zebra-print stripes — base
horizontal stripes with a sinusoidal y-shift in x so they
undulate organically rather than aligning to the row grid.
Two-color (bg + stripe) for the iconic black-on-white animal-
print effect. Each pixel computes y + amplitude*sin(2π*x/wavelength)
then mods by the stripe period.

Useful for animal-print fabric, savanna grass mats, tribal
clothing, fur tiles. Defaults to 24-px period with 8-px
amplitude on an 80-px wavelength wave.
This commit is contained in:
Kelsi 2026-05-09 10:03:27 -07:00
parent 32e7eef107
commit f6f5b7d9a0
3 changed files with 89 additions and 1 deletions
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2
tools/editor/cli_help.cpp
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@ -125,6 +125,8 @@ void printUsage(const char* argv0) {
std::printf(" Runes: scattered angular glyphs of 3-5 strokes each (8 cardinal/diagonal angles)\n");
std::printf(" --gen-texture-leopard <out.png> <bgHex> <spotHex> [count] [radius] [W H]\n");
std::printf(" Leopard: irregular spots (4 sub-circles each) for animal-print fabric/fur\n");
std::printf(" --gen-texture-zebra <out.png> <bgHex> <stripeHex> [period] [amplitude] [wavelength] [W H]\n");
std::printf(" Zebra: wavy parallel stripes via sinusoidal y-shift (animal-print stripes)\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");