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feat(editor): crater generator for lakes, arenas, impact sites

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- Crater Generator in Sculpt panel: creates a bowl-shaped depression
  with configurable radius, depth, and raised rim height
- Parabolic bowl interior with sinusoidal rim and smooth outer falloff
- Perfect for creating lakes (fill with Water mode), arenas, or
  impact craters for volcanic zones
- One click at cursor position, uses brush position for center
This commit is contained in:
Kelsi 2026-05-05 06:50:24 -07:00
parent 496f97f9db
commit 1502c2ed85
3 changed files with 57 additions and 0 deletions
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13
tools/editor/editor_ui.cpp
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@ -551,6 +551,19 @@ void EditorUI::renderBrushPanel(EditorApp& app) {
ImGui::TextColored(ImVec4(0.6f, 0.6f, 0.6f, 1), "No stamp copied");
}
if (ImGui::CollapsingHeader("Crater Generator")) {
static float craterRadius = 30.0f, craterDepth = 10.0f, craterRim = 3.0f;
ImGui::SliderFloat("Radius##crater", &craterRadius, 5.0f, 100.0f);
ImGui::SliderFloat("Depth##crater", &craterDepth, 2.0f, 50.0f);
ImGui::SliderFloat("Rim Height##crater", &craterRim, 0.0f, 15.0f);
auto& brush5 = app.getTerrainEditor().brush();
if (ImGui::Button("Create Crater at Cursor", ImVec2(-1, 0)) && brush5.isActive()) {
app.getTerrainEditor().createCrater(brush5.getPosition(), craterRadius, craterDepth, craterRim);
app.showToast("Crater created");
}
ImGui::TextColored(ImVec4(0.6f, 0.6f, 0.6f, 1), "Bowl with raised rim. Fill with water for a lake.");
}
if (ImGui::CollapsingHeader("Flatten Platform")) {
auto& brush3 = app.getTerrainEditor().brush();
if (ImGui::Button("Create Flat Platform at Cursor", ImVec2(-1, 0)) && brush3.isActive()) {