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feat(editor): add --gen-texture-clouds sky pattern

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Multi-octave cosine-product noise (4 octaves at doubling
frequency, halving amplitude) thresholded by `coverage` so
values above the threshold blend toward cloud color and below
fade to sky. A 0.15-wide smoothstep band feathers cloud edges
instead of stepping hard.

Defaults: coverage=0.5 (mixed clouds), seed=1. Useful for
skybox cubemaps, distant sky planes, atmospheric backdrop
art. Brings the procedural texture pattern set to 25.
This commit is contained in:
Kelsi 2026-05-09 00:20:14 -07:00
parent 3d5a786ca9
commit 08f740a1ff
3 changed files with 107 additions and 0 deletions
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2
tools/editor/cli_help.cpp
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@ -77,6 +77,8 @@ void printUsage(const char* argv0) {
std::printf(" Square stone tiles with grout grid (default 32px tiles, 2px grout)\n");
std::printf(" --gen-texture-bark <out.png> <baseHex> <crackHex> [seed] [crackDensity] [W H]\n");
std::printf(" Tree bark: vertical wavy streaks + dark vertical cracks (default density=0.04)\n");
std::printf(" --gen-texture-clouds <out.png> <skyHex> <cloudHex> [seed] [coverage] [W H]\n");
std::printf(" Sky with puffy clouds: multi-octave noise thresholded by coverage (default 0.5)\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");