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feat(editor): add --gen-mesh-throne regal-seat primitive

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5-box composite: low pedestal slab + seat block + tall
vertical backrest at -Z + 2 small armrests on the +X/-X
sides. Pedestal is wider than the seat for a stable
foundation, seat thickness is 30% of total seat height.

Defaults: seatW=0.8, seatH=0.5, backH=1.5, pedSize=1.2.
Useful for throne rooms, hero seats, judgement halls,
royal court set dressing. Brings the procedural mesh
primitive set to 37.
This commit is contained in:
Kelsi 2026-05-09 05:50:23 -07:00
parent a4d282b588
commit b75924762e
3 changed files with 118 additions and 0 deletions
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115
tools/editor/cli_gen_mesh.cpp
View file

@ -4406,6 +4406,118 @@ int handleCage(int& i, int argc, char** argv) {
return 0;
}
int handleThrone(int& i, int argc, char** argv) {
// Throne: pedestal slab + seat block + tall backrest +
// 2 armrests on either side. Reads as a regal seat from
// any angle. The 37th procedural mesh primitive.
std::string womBase = argv[++i];
float seatW = 0.8f; // along X
float seatH = 0.5f; // top of seat above pedestal
float backH = 1.5f; // backrest extends this above seat
float pedSize = 1.2f; // pedestal width = depth
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { seatW = std::stof(argv[++i]); } catch (...) {}
}
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { seatH = std::stof(argv[++i]); } catch (...) {}
}
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { backH = std::stof(argv[++i]); } catch (...) {}
}
if (i + 1 < argc && argv[i + 1][0] != '-') {
try { pedSize = std::stof(argv[++i]); } catch (...) {}
}
if (seatW <= 0 || seatH <= 0 || backH <= 0 || pedSize <= 0 ||
pedSize < seatW) {
std::fprintf(stderr,
"gen-mesh-throne: dims > 0; pedSize must be >= seatW\n");
return 1;
}
if (womBase.size() >= 4 &&
womBase.substr(womBase.size() - 4) == ".wom") {
womBase = womBase.substr(0, womBase.size() - 4);
}
wowee::pipeline::WoweeModel wom;
wom.name = std::filesystem::path(womBase).stem().string();
wom.version = 3;
auto addBox = [&](float cx, float cy, float cz,
float hx, float hy, float hz) {
struct Face { glm::vec3 n, du, dv; };
Face faces[6] = {
{{0, 1, 0}, {1, 0, 0}, {0, 0, 1}},
{{0,-1, 0}, {1, 0, 0}, {0, 0,-1}},
{{1, 0, 0}, {0, 0, 1}, {0, 1, 0}},
{{-1,0, 0}, {0, 0,-1}, {0, 1, 0}},
{{0, 0, 1}, {-1,0, 0}, {0, 1, 0}},
{{0, 0,-1}, {1, 0, 0}, {0, 1, 0}},
};
glm::vec3 c(cx, cy, cz);
glm::vec3 ext(hx, hy, hz);
for (const Face& f : faces) {
glm::vec3 center = c + glm::vec3(f.n.x*hx, f.n.y*hy, f.n.z*hz);
glm::vec3 du = glm::vec3(f.du.x*ext.x, f.du.y*ext.y, f.du.z*ext.z);
glm::vec3 dv = glm::vec3(f.dv.x*ext.x, f.dv.y*ext.y, f.dv.z*ext.z);
uint32_t base = static_cast<uint32_t>(wom.vertices.size());
auto push = [&](glm::vec3 p, float u, float v) {
wowee::pipeline::WoweeModel::Vertex vtx;
vtx.position = p; vtx.normal = f.n; vtx.texCoord = {u, v};
wom.vertices.push_back(vtx);
};
push(center - du - dv, 0, 0);
push(center + du - dv, 1, 0);
push(center + du + dv, 1, 1);
push(center - du + dv, 0, 1);
wom.indices.insert(wom.indices.end(),
{base, base + 1, base + 2, base, base + 2, base + 3});
}
};
// Pedestal: low square slab at the floor
float pedH = seatH * 0.4f;
float halfPed = pedSize * 0.5f;
addBox(0, pedH * 0.5f, 0, halfPed, pedH * 0.5f, halfPed);
// Seat: thick square cushion sitting on pedestal
float seatT = seatH * 0.3f; // seat thickness (along Y)
float seatCY = pedH + seatT * 0.5f;
float halfSeat = seatW * 0.5f;
addBox(0, seatCY, 0, halfSeat, seatT * 0.5f, halfSeat);
// Backrest: tall vertical slab at -Z edge of seat, slim in Z
float backT = seatT * 0.6f;
float backCY = pedH + seatT + backH * 0.5f;
addBox(0, backCY, -halfSeat + backT * 0.5f,
halfSeat, backH * 0.5f, backT * 0.5f);
// Armrests: 2 small blocks on the sides
float armW = backT * 0.8f;
float armH = seatH * 0.4f;
float armCY = pedH + seatT + armH * 0.5f;
float armDepth = halfSeat * 0.7f;
addBox( halfSeat - armW * 0.5f, armCY, 0,
armW * 0.5f, armH * 0.5f, armDepth);
addBox(-halfSeat + armW * 0.5f, armCY, 0,
armW * 0.5f, armH * 0.5f, armDepth);
wowee::pipeline::WoweeModel::Batch batch;
batch.indexStart = 0;
batch.indexCount = static_cast<uint32_t>(wom.indices.size());
batch.textureIndex = 0;
wom.batches.push_back(batch);
float maxY = pedH + seatT + backH;
wom.boundMin = glm::vec3(-halfPed, 0, -halfPed);
wom.boundMax = glm::vec3( halfPed, maxY, halfPed);
if (!wowee::pipeline::WoweeModelLoader::save(wom, womBase)) {
std::fprintf(stderr,
"gen-mesh-throne: failed to save %s.wom\n", womBase.c_str());
return 1;
}
std::printf("Wrote %s.wom\n", womBase.c_str());
std::printf(" pedestal : %.3f × %.3f (h=%.3f)\n",
pedSize, pedSize, pedH);
std::printf(" seat : %.3f × %.3f\n", seatW, seatT);
std::printf(" backrest : H=%.3f\n", backH);
std::printf(" total H : %.3f\n", maxY);
std::printf(" vertices : %zu\n", wom.vertices.size());
std::printf(" triangles : %zu\n", wom.indices.size() / 3);
return 0;
}
} // namespace
bool handleGenMesh(int& i, int argc, char** argv, int& outRc) {
@ -4509,6 +4621,9 @@ bool handleGenMesh(int& i, int argc, char** argv, int& outRc) {
if (std::strcmp(argv[i], "--gen-mesh-cage") == 0 && i + 1 < argc) {
outRc = handleCage(i, argc, argv); return true;
}
if (std::strcmp(argv[i], "--gen-mesh-throne") == 0 && i + 1 < argc) {
outRc = handleThrone(i, argc, argv); return true;
}
return false;
}

2
tools/editor/cli_help.cpp
View file

@ -158,6 +158,8 @@ void printUsage(const char* argv0) {
std::printf(" Tribal totem: stack of N alternating-width carved blocks (default w=0.5, 5 segs, h=0.5)\n");
std::printf(" --gen-mesh-cage <wom-base> [width] [height] [barsPerSide] [barRadius]\n");
std::printf(" Cage: top/bottom frames + 4 corner posts + N bars per side (default 1.5×2.0, 5 bars)\n");
std::printf(" --gen-mesh-throne <wom-base> [seatWidth] [seatHeight] [backHeight] [pedestalSize]\n");
std::printf(" Throne: pedestal + seat + backrest + 2 armrests (default 0.8/0.5/1.5/1.2)\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");

1
tools/editor/main.cpp
View file

@ -123,6 +123,7 @@ int main(int argc, char* argv[]) {
"--gen-mesh-anvil", "--gen-mesh-mushroom", "--gen-mesh-cart",
"--gen-mesh-banner", "--gen-mesh-grave", "--gen-mesh-bench",
"--gen-mesh-shrine", "--gen-mesh-totem", "--gen-mesh-cage",
"--gen-mesh-throne",
"--gen-texture-gradient",
"--gen-mesh-from-heightmap", "--export-mesh-heightmap",
"--displace-mesh",