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feat(editor): add --gen-texture-dunes wave-ripple pattern

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69th procedural texture: stack of parallel sinusoidal curves
spaced verticalSpacing apart. A pixel falls on a dune line
if its Y is within lineW/2 pixels of the nearest curve at
y = N*spacing + amp*sin(2π*x/period).

Distinct from --gen-texture-corrugated (uniform parallel
lines) and --gen-texture-zebra (sin-shifted strip fills) —
this is the discrete-curve variant for desert ground
textures and shallow-water sand patterns.

Useful for desert ground, shallow-water sand bottoms,
beach close-ups, mirage scene-setters, sand-storm overlays,
zone-specific weathering on stone surfaces.
This commit is contained in:
Kelsi 2026-05-09 13:03:00 -07:00
parent b3755f8342
commit ad21d16df0
3 changed files with 70 additions and 0 deletions
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2
tools/editor/cli_help.cpp
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@ -171,6 +171,8 @@ void printUsage(const char* argv0) {
std::printf(" Houndstooth: classic textile broken-check pattern via seamless 8x8 motif (Scottish weave)\n");
std::printf(" --gen-texture-chevron <out.png> <bgHex> <lineHex> [period] [stride] [lineW] [W H]\n");
std::printf(" Chevron: stack of V-shape stripes with sharp seams (military / sportswear / heraldic banners)\n");
std::printf(" --gen-texture-dunes <out.png> <bgHex> <lineHex> [verticalSpacing] [period] [amp] [lineW] [W H]\n");
std::printf(" Dunes: stack of parallel sinusoidal curves (desert ground / shallow-water sand / wave ripples)\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");