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feat(editor): add --bake-zone-stl for full-zone 3D-printable terrain
STL companion to --bake-zone-glb. Designers can 3D-print a miniature
of an entire multi-tile zone in one slicer load — useful for tabletop
RPG props, physical playtest references, or just the satisfaction of
holding a zone in your hand:
wowee_editor --bake-zone-stl custom_zones/MyZone
# -> custom_zones/MyZone/MyZone.stl
Baked custom_zones/MyZone -> custom_zones/MyZone/MyZone.stl
2 tile(s), 65536 facets, 0 hole quads skipped
Streams ASCII STL directly to disk (no in-memory accumulation —
relevant for large multi-tile zones). Per-triangle face normal
computed from cross product since slicers use it for orientation.
Hole bits respected (cave-entrance quads dropped) and counted
separately so users see how much got skipped.
Why STL alongside the existing glTF zone bake: glTF targets
on-screen 3D viewers; STL targets fabrication. Different ecosystems,
different file formats, both now reachable from the same WHM source
with one command each.
Verified: 2-tile zone (Z + added tile) baked correctly. 65536 facets
(2 tiles × 32768 each), 12MB ASCII STL, well-formed solid/endsolid
framing, normals computed (e.g. '0.305 -0.399 -0.864' for the first
sloped facet).
This commit is contained in:
Kelsi
parent
b7b600c177
commit
06b21884ad
1 changed files with 127 additions and 1 deletions
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@ -487,6 +487,8 @@ static void printUsage(const char* argv0) {
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std::printf(" Convert WHM heightmap to glTF 2.0 binary terrain mesh (per-chunk primitives)\n");
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std::printf(" --bake-zone-glb <zoneDir> [out.glb]\n");
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std::printf(" Bake every WHM tile in a zone into one glTF (one node per tile)\n");
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std::printf(" --bake-zone-stl <zoneDir> [out.stl]\n");
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std::printf(" Bake every WHM tile in a zone into one STL for 3D-printing the terrain\n");
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std::printf(" --import-obj <obj-path> [wom-base]\n");
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std::printf(" Convert a Wavefront OBJ back into WOM (round-trips with --export-obj)\n");
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std::printf(" --export-wob-obj <wob-base> [out.obj]\n");
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@ -639,7 +641,7 @@ int main(int argc, char* argv[]) {
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"--export-wob-obj", "--import-wob-obj",
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"--export-woc-obj", "--export-whm-obj",
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"--export-glb", "--export-wob-glb", "--export-whm-glb",
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"--export-stl", "--import-stl", "--bake-zone-glb",
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"--export-stl", "--import-stl", "--bake-zone-glb", "--bake-zone-stl",
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"--convert-m2", "--convert-wmo",
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"--convert-dbc-json", "--convert-json-dbc", "--convert-blp-png",
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"--migrate-wom", "--migrate-zone",
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@ -5136,6 +5138,130 @@ int main(int argc, char* argv[]) {
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loadedTiles, totalV, totalI / 3,
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meshes.size(), binLen);
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return 0;
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} else if (std::strcmp(argv[i], "--bake-zone-stl") == 0 && i + 1 < argc) {
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// STL counterpart to --bake-zone-glb. Designers can 3D-print a
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// miniature of an entire multi-tile zone in one slicer load —
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// useful for tabletop RPG props or a physical reference of a
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// playtest area.
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std::string zoneDir = argv[++i];
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std::string outPath;
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if (i + 1 < argc && argv[i + 1][0] != '-') outPath = argv[++i];
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namespace fs = std::filesystem;
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std::string manifestPath = zoneDir + "/zone.json";
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if (!fs::exists(manifestPath)) {
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std::fprintf(stderr,
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"bake-zone-stl: %s has no zone.json\n", zoneDir.c_str());
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return 1;
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}
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wowee::editor::ZoneManifest zm;
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if (!zm.load(manifestPath)) {
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std::fprintf(stderr,
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"bake-zone-stl: failed to parse zone.json\n");
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return 1;
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}
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if (outPath.empty()) outPath = zoneDir + "/" + zm.mapName + ".stl";
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if (zm.tiles.empty()) {
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std::fprintf(stderr, "bake-zone-stl: zone has no tiles\n");
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return 1;
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}
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std::ofstream out(outPath);
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if (!out) {
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std::fprintf(stderr, "bake-zone-stl: cannot write %s\n", outPath.c_str());
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return 1;
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}
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constexpr float kTileSize = 533.33333f;
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constexpr float kChunkSize = kTileSize / 16.0f;
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constexpr float kVertSpacing = kChunkSize / 8.0f;
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// Solid name sanitized to alphanum + underscore.
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std::string solidName = zm.mapName;
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for (auto& c : solidName) {
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if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
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(c >= '0' && c <= '9') || c == '_')) c = '_';
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}
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if (solidName.empty()) solidName = "wowee_zone";
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out << "solid " << solidName << "\n";
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int loadedTiles = 0, holesSkipped = 0;
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uint64_t triCount = 0;
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// For each tile, generate the same 9x9 outer-grid mesh and
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// emit per-triangle facets directly (STL has no shared
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// vertex pool — each triangle stands alone). Compute face
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// normal from cross product (slicers use it for orientation).
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for (const auto& [tx, ty] : zm.tiles) {
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std::string tileBase = zoneDir + "/" + zm.mapName + "_" +
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std::to_string(tx) + "_" + std::to_string(ty);
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if (!wowee::pipeline::WoweeTerrainLoader::exists(tileBase)) {
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std::fprintf(stderr,
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"bake-zone-stl: tile (%d, %d) WHM/WOT missing — skipping\n",
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tx, ty);
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continue;
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}
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wowee::pipeline::ADTTerrain terrain;
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wowee::pipeline::WoweeTerrainLoader::load(tileBase, terrain);
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loadedTiles++;
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for (int cx = 0; cx < 16; ++cx) {
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for (int cy = 0; cy < 16; ++cy) {
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const auto& chunk = terrain.getChunk(cx, cy);
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if (!chunk.heightMap.isLoaded()) continue;
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float chunkBaseX = (32.0f - terrain.coord.y) * kTileSize - cy * kChunkSize;
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float chunkBaseY = (32.0f - terrain.coord.x) * kTileSize - cx * kChunkSize;
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// Pre-compute the 9x9 vertex grid for this chunk.
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glm::vec3 V[9][9];
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for (int row = 0; row < 9; ++row) {
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for (int col = 0; col < 9; ++col) {
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V[row][col] = {
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chunkBaseX - row * kVertSpacing,
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chunkBaseY - col * kVertSpacing,
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chunk.position[2] +
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chunk.heightMap.heights[row * 17 + col]
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};
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}
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}
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bool isHoleChunk = (chunk.holes != 0);
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auto emitTri = [&](const glm::vec3& a,
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const glm::vec3& b,
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const glm::vec3& c) {
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glm::vec3 e1 = b - a, e2 = c - a;
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glm::vec3 n = glm::cross(e1, e2);
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float len = glm::length(n);
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if (len > 1e-12f) n /= len;
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else n = {0, 0, 1};
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out << " facet normal " << n.x << " " << n.y << " " << n.z << "\n"
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<< " outer loop\n"
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<< " vertex " << a.x << " " << a.y << " " << a.z << "\n"
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<< " vertex " << b.x << " " << b.y << " " << b.z << "\n"
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<< " vertex " << c.x << " " << c.y << " " << c.z << "\n"
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<< " endloop\n"
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<< " endfacet\n";
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triCount++;
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};
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for (int row = 0; row < 8; ++row) {
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for (int col = 0; col < 8; ++col) {
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if (isHoleChunk) {
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int hx = col / 2, hy = row / 2;
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if (chunk.holes & (1 << (hy * 4 + hx))) {
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holesSkipped++;
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continue;
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}
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}
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emitTri(V[row][col], V[row][col + 1], V[row + 1][col + 1]);
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emitTri(V[row][col], V[row + 1][col + 1], V[row + 1][col]);
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}
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}
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}
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}
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}
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out << "endsolid " << solidName << "\n";
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out.close();
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if (loadedTiles == 0) {
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std::fprintf(stderr, "bake-zone-stl: no tiles loaded\n");
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std::filesystem::remove(outPath);
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return 1;
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}
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std::printf("Baked %s -> %s\n", zoneDir.c_str(), outPath.c_str());
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std::printf(" %d tile(s), %llu facets, %d hole quads skipped\n",
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loadedTiles, static_cast<unsigned long long>(triCount),
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holesSkipped);
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return 0;
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} else if (std::strcmp(argv[i], "--export-wob-obj") == 0 && i + 1 < argc) {
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// WOB is the WMO replacement; like --export-obj for WOM, this
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// bridges WOB into the universal-3D-tool ecosystem. Each WOB
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