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feat(editor): alpha map export as individual 64x64 grayscale PNGs

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This commit is contained in:
Kelsi 2026-05-05 11:08:40 -07:00
parent 25f1893b49
commit 4ea09b0b8b
2 changed files with 27 additions and 0 deletions
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23
tools/editor/wowee_terrain.cpp
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@ -121,6 +121,29 @@ bool WoweeTerrain::exportNormalMap(const pipeline::ADTTerrain& terrain,
return true; return true;
} }
int WoweeTerrain::exportAlphaMaps(const pipeline::ADTTerrain& terrain,
const std::string& outputDir) {
namespace fs = std::filesystem;
fs::create_directories(outputDir);
int exported = 0;
for (int ci = 0; ci < 256; ci++) {
const auto& chunk = terrain.chunks[ci];
for (size_t li = 1; li < chunk.layers.size(); li++) {
if (!chunk.layers[li].useAlpha()) continue;
size_t off = chunk.layers[li].offsetMCAL;
if (off + 4096 > chunk.alphaMap.size()) continue;
std::string path = outputDir + "/chunk_" + std::to_string(ci) +
"_layer_" + std::to_string(li) + ".png";
stbi_write_png(path.c_str(), 64, 64, 1,
chunk.alphaMap.data() + off, 64);
exported++;
}
}
return exported;
}
bool WoweeTerrain::importOpen(const std::string& basePath, pipeline::ADTTerrain& terrain) { bool WoweeTerrain::importOpen(const std::string& basePath, pipeline::ADTTerrain& terrain) {
std::string hmPath = basePath + ".whm"; std::string hmPath = basePath + ".whm";
std::ifstream f(hmPath, std::ios::binary); std::ifstream f(hmPath, std::ios::binary);

4
tools/editor/wowee_terrain.hpp
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@ -18,6 +18,10 @@ public:
static bool exportNormalMap(const pipeline::ADTTerrain& terrain, static bool exportNormalMap(const pipeline::ADTTerrain& terrain,
const std::string& path); const std::string& path);
// Export alpha maps as individual 64x64 grayscale PNGs per chunk layer
static int exportAlphaMaps(const pipeline::ADTTerrain& terrain,
const std::string& outputDir);
// Import terrain from open format back to ADTTerrain // Import terrain from open format back to ADTTerrain
static bool importOpen(const std::string& basePath, pipeline::ADTTerrain& terrain); static bool importOpen(const std::string& basePath, pipeline::ADTTerrain& terrain);
}; };