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feat(editor): add --gen-mesh-mushroom forest-prop primitive

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Composite mushroom: 12-segment cylindrical stalk + 16×8
hemisphere cap on top (top half of a UV sphere). Cap radius
is independent of stalk radius so the silhouette can match
anything from a slim toadstool to a wide morel. Stalk has a
bottom cap and the hemisphere's lower edge is sealed against
a flat -Y disc (the "gills") so the mesh is watertight from
all viewing angles.

Defaults: stalkR=0.1, stalkH=0.6, capR=0.4. Useful for
forest decoration, swamp zones, fairy-ring set dressing.
Brings the procedural mesh primitive set to 29.
This commit is contained in:
Kelsi 2026-05-08 23:48:03 -07:00
parent 251a830966
commit 326f7bcdaa
3 changed files with 137 additions and 1 deletions
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2
tools/editor/cli_help.cpp
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@ -126,6 +126,8 @@ void printUsage(const char* argv0) {
std::printf(" Treasure chest: body box + lid box + 3 iron bands + lock plate (default 1.4×0.9×0.9)\n");
std::printf(" --gen-mesh-anvil <wom-base> [length] [width] [hornLength] [bodyHeight]\n");
std::printf(" Blacksmith anvil: stepped pedestal + flat work surface + horn taper (default 1.0×0.4×0.5×0.5)\n");
std::printf(" --gen-mesh-mushroom <wom-base> [stalkRadius] [stalkHeight] [capRadius]\n");
std::printf(" Mushroom: cylindrical stalk + hemispherical cap (default 0.1/0.6/0.4)\n");
std::printf(" Procedural tree: cylindrical trunk + spherical foliage (default 0.1/2.0/0.7)\n");
std::printf(" --displace-mesh <wom-base> <heightmap.png> [scale]\n");
std::printf(" Offset each vertex along its normal by heightmap brightness × scale (default 1.0)\n");