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feat(editor): texture eyedropper, WOT/WHM preference loading

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- Texture eyedropper: pickTextureAt() samples dominant texture at world
  position by reading chunk alpha maps. Alt+Click in paint mode or
  click the Eyedropper button to activate
- loadADT now checks custom_zones/ and output/ for WOT/WHM open format
  files first, falling back to ADT binary only if not found
- Fix unused variable warning in scatterPatches
- Document Alt+Click in help panel
This commit is contained in:
Kelsi 2026-05-05 13:39:53 -07:00
parent acfbf19144
commit d2acdc7620
4 changed files with 99 additions and 16 deletions
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45
tools/editor/texture_painter.cpp
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@ -325,7 +325,7 @@ void TexturePainter::gradientBlend(const std::string& tex1, const std::string& t
void TexturePainter::scatterPatches(const std::string& texturePath, int count,
float minRadius, float maxRadius, uint32_t seed) {
if (!terrain_ || texturePath.empty()) return;
uint32_t texId = ensureTextureInList(texturePath);
ensureTextureInList(texturePath);
float tileNW_X = (32.0f - static_cast<float>(terrain_->coord.y)) * 533.33333f;
float tileNW_Y = (32.0f - static_cast<float>(terrain_->coord.x)) * 533.33333f;
@ -371,5 +371,48 @@ std::vector<int> TexturePainter::erase(const glm::vec3& center, float radius,
return modified;
}
std::string TexturePainter::pickTextureAt(const glm::vec3& worldPos) const {
if (!terrain_) return "";
for (int ci = 0; ci < 256; ci++) {
const auto& chunk = terrain_->chunks[ci];
if (!chunk.hasHeightMap() || chunk.layers.empty()) continue;
glm::vec2 uv = worldToChunkUV(ci, worldPos);
if (uv.x < 0 || uv.x > 1 || uv.y < 0 || uv.y > 1) continue;
if (chunk.layers.size() == 1) {
if (chunk.layers[0].textureId < terrain_->textures.size())
return terrain_->textures[chunk.layers[0].textureId];
continue;
}
int px = std::clamp(static_cast<int>(uv.x * 64.0f), 0, 63);
int py = std::clamp(static_cast<int>(uv.y * 64.0f), 0, 63);
int pixelIdx = py * 64 + px;
uint32_t bestLayer = 0;
uint8_t bestAlpha = 0;
for (size_t li = 1; li < chunk.layers.size(); li++) {
size_t alphaOffset = (li - 1) * 4096 + pixelIdx;
if (alphaOffset < chunk.alphaMap.size()) {
uint8_t alpha = chunk.alphaMap[alphaOffset];
if (alpha > bestAlpha) {
bestAlpha = alpha;
bestLayer = static_cast<uint32_t>(li);
}
}
}
if (bestAlpha < 128) bestLayer = 0;
if (bestLayer < chunk.layers.size() &&
chunk.layers[bestLayer].textureId < terrain_->textures.size()) {
return terrain_->textures[chunk.layers[bestLayer].textureId];
}
}
return "";
}
} // namespace editor
} // namespace wowee