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feat(editor): hill/valley generator with smooth bell curve shape

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- Hill Generator: creates smooth bell-curve hills at cursor position
  with configurable radius and height
- Valley mode: same shape inverted, creates natural depressions
- Uses (1-t^2)^2 falloff for very smooth natural-looking slopes
- Two buttons: "Create Hill" and "Create Valley" for quick terrain
  shaping without switching brush modes
This commit is contained in:
Kelsi 2026-05-05 06:57:18 -07:00
parent 88416bbb1d
commit d6c58b5dc9
3 changed files with 39 additions and 0 deletions
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16
tools/editor/editor_ui.cpp
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@ -551,6 +551,22 @@ void EditorUI::renderBrushPanel(EditorApp& app) {
ImGui::TextColored(ImVec4(0.6f, 0.6f, 0.6f, 1), "No stamp copied");
}
if (ImGui::CollapsingHeader("Hill Generator")) {
static float hillRadius = 40.0f, hillHeight = 25.0f;
ImGui::SliderFloat("Radius##hill", &hillRadius, 10.0f, 150.0f);
ImGui::SliderFloat("Height##hill", &hillHeight, 5.0f, 100.0f);
auto& brushH = app.getTerrainEditor().brush();
if (ImGui::Button("Create Hill", ImVec2(120, 0)) && brushH.isActive()) {
app.getTerrainEditor().createHill(brushH.getPosition(), hillRadius, hillHeight);
app.showToast("Hill created");
}
ImGui::SameLine();
if (ImGui::Button("Create Valley", ImVec2(120, 0)) && brushH.isActive()) {
app.getTerrainEditor().createHill(brushH.getPosition(), hillRadius, -hillHeight);
app.showToast("Valley created");
}
}
if (ImGui::CollapsingHeader("Mesa / Plateau")) {
static float mesaRadius = 40.0f, mesaHeight = 20.0f, mesaSteep = 0.3f;
ImGui::SliderFloat("Radius##mesa", &mesaRadius, 10.0f, 150.0f);