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feat(editor): add --gen-texture-diamond-grid solid-shape tile

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66th procedural texture: axis-aligned grid of solid diamond
shapes (no row offset) separated by visible bg gaps. Each
cell hosts one diamond computed via L1 (taxicab) metric:
|dx|/halfW + |dy|/halfH < fillFrac.

Distinct from --gen-texture-snake-skin (brick-offset diamonds
that touch tangentially with a derived dark outline) — this
variant uses uniform spacing and a configurable fill fraction
so diamonds float in clean grid rows.

fillFrac = 0.80 default gives a 20% bg-gap moat between
diamonds; bump near 1.0 for nearly-touching chevron-floor
look, drop to 0.5 for sparse polka-diamond.

Useful for clean tile floors, mosaic inlay panels, banner
seamless backgrounds, formal heraldry trim, jeweled-cloak
tabards.
This commit is contained in:
Kelsi 2026-05-09 12:47:28 -07:00
parent 790fe64824
commit 14c77b1af5
3 changed files with 66 additions and 1 deletions
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2
tools/editor/cli_help.cpp
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@ -165,6 +165,8 @@ void printUsage(const char* argv0) {
std::printf(" Rust streaks: vertical drip bands fading down from hash-jittered tops (weathered metal / hull stains)\n");
std::printf(" --gen-texture-plaid <out.png> <bgHex> <bandHex> [stride] [bandW] [W H]\n");
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(" --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");