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feat(editor): flatten around object, scatter auto-align, manifest batch

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- Flatten Ground: flattens terrain to object height with smooth falloff
  around placed buildings/structures (undoable). Button in object panel
- Scatter auto-align: checkbox enables terrain snapping + slope alignment
  for scattered objects (trees snap to ground and lean with hillsides)
- Batch convert now falls back to asset manifest when filesystem dir is
  empty — converts M2/WMO from game data without filesystem extraction
- Public terrain editor wrappers: beginGeneratorUndo, endGeneratorUndo,
  markDirty, stitchChunkEdges, getChunkVertexWorldPos
This commit is contained in:
Kelsi 2026-05-05 14:28:14 -07:00
parent 115fe8436f
commit d3e8f999c7
4 changed files with 76 additions and 8 deletions
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24
tools/editor/editor_ui.cpp
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@ -1512,6 +1512,10 @@ void EditorUI::renderObjectPanel(EditorApp& app) {
ImGui::SameLine();
if (ImGui::Button("Align Slope", ImVec2(75, 0)))
app.alignSelectedToTerrain();
if (ImGui::Button("Flatten Ground", ImVec2(100, 0)))
app.flattenAroundSelected();
if (ImGui::IsItemHovered())
ImGui::SetTooltip("Flatten terrain around object to its height");
if (ImGui::Button("Fly To", ImVec2(55, 0)))
app.flyToSelected();
ImGui::SameLine();
@ -1544,16 +1548,32 @@ void EditorUI::renderObjectPanel(EditorApp& app) {
ImGui::SliderInt("Count##objsc", &objScatterCount, 1, 50);
ImGui::SliderFloat("Radius##objsc", &objScatterRadius, 10.0f, 300.0f);
ImGui::DragFloatRange2("Scale##objsc", &objMinScale, &objMaxScale, 0.05f, 0.1f, 10.0f);
static bool scatterAlign = true;
ImGui::Checkbox("Align to terrain", &scatterAlign);
auto& brush = app.getTerrainEditor().brush();
if (ImGui::Button("Scatter at Cursor##obj", ImVec2(-1, 0))) {
if (brush.isActive() && !placer.getActivePath().empty()) {
size_t before = placer.objectCount();
placer.scatter(brush.getPosition(), objScatterRadius,
objScatterCount, objMinScale, objMaxScale);
if (scatterAlign) {
for (size_t i = before; i < placer.objectCount(); i++) {
auto& obj = placer.getObjects()[i];
rendering::Ray ray;
ray.origin = obj.position + glm::vec3(0, 0, 500);
ray.direction = glm::vec3(0, 0, -1);
glm::vec3 hitPos;
if (app.getTerrainEditor().raycastTerrain(ray, hitPos)) {
obj.position.z = hitPos.z;
glm::vec3 n = app.getTerrainEditor().sampleTerrainNormal(obj.position);
obj.rotation.x = glm::degrees(std::asin(-n.x));
obj.rotation.z = glm::degrees(std::asin(n.y));
}
}
}
app.markObjectsDirty();
}
}
ImGui::TextColored(ImVec4(0.6f, 0.6f, 0.6f, 1),
"Scatters selected model with random rotation/scale");
}
ImGui::Separator();