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feat(editor): add --gen-texture-houndstooth classic-textile motif

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67th procedural texture: the classic 19th-century Scottish
houndstooth broken-check pattern via a hard-coded seamless
8x8 motif:

    1 1 1 1 0 0 0 0
    1 1 1 1 0 0 0 1
    1 1 1 0 0 0 1 1
    1 1 0 0 0 1 1 1
    0 0 0 0 1 1 1 1
    0 0 0 1 1 1 1 1
    0 0 1 1 1 1 1 0
    0 1 1 1 1 1 0 0

Each motif cell scales to `cellSize` pixels (default 4 → 32
px tile), so a 256x256 texture shows 8 motifs in each axis.
Tile-seam-perfect: no row offset or fractional pixel issues
since lookup is integer mod 8.

Useful for noble-house tabard accents, formal-attire trim,
upholstery in palace dining rooms, drapes / wall hangings,
gentry-quarter banners. Distinct from --gen-texture-tartan
(weighted multi-color stripes) and --gen-texture-checker
(simple binary squares) — houndstooth has the iconic
4-pointed "tooth" silhouette.
This commit is contained in:
Kelsi 2026-05-09 12:52:31 -07:00
parent 4e64f833a7
commit 30e58ae0b2
3 changed files with 66 additions and 0 deletions
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2
tools/editor/cli_help.cpp
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@ -167,6 +167,8 @@ void printUsage(const char* argv0) {
std::printf(" Plaid: 2 sets of crossed translucent bands; intersections darken via combined half-alpha\n");
std::printf(" --gen-texture-diamond-grid <out.png> <bgHex> <fillHex> [cellW] [cellH] [fillFrac] [W H]\n");
std::printf(" Diamond grid: axis-aligned solid diamonds in cells with bg gaps (clean tile / mosaic / floor inlay)\n");
std::printf(" --gen-texture-houndstooth <out.png> <toothHex> <bgHex> [cellSize] [W H]\n");
std::printf(" Houndstooth: classic textile broken-check pattern via seamless 8x8 motif (Scottish weave)\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");