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Michael Mainguy 5fbf2b87c1 Implement OBB-based scaling for rotated meshes and simplify gizmo UX
Major improvements to ResizeGizmo rotation handling and interface:

1. **OBB (Oriented Bounding Box) Implementation**
   - Replace AABB with true OBB that rotates with mesh
   - Calculate 8 OBB corners in world space using mesh world matrix
   - Update bounding box wireframe to use OBB corners
   - Rewrite all handle generation (corner, edge, face) for OBB positioning
   - Handle normals now calculated from mesh center to handle position
   - Result: Bounding box and handles rotate with mesh, scaling follows local axes

2. **Simplify UX - Remove Edge Handles**
   - Remove TWO_AXIS mode from ResizeGizmoMode enum
   - Disable edge handles (green, two-axis) to reduce cognitive complexity
   - Keep only corner handles (blue, uniform) and face handles (red, single-axis)
   - Updated from 26 total handles to 14 handles (6 face + 8 corner)
   - All scaling capabilities still available through remaining handle types

3. **Fix Event Leak-Through (Hit Testing)**
   - Add getUtilityScene() method to ResizeGizmoManager
   - Configure XR pick predicate to exclude utility layer meshes (primary defense)
   - Filter utility layer in pointer observable (secondary defense)
   - Filter utility layer in click handler (tertiary defense)
   - Prevents gizmo handle events from leaking to main scene

4. **Documentation**
   - Add TODO.md documenting implementation and decisions
   - Document OBB implementation and edge handle removal
   - Track completed features and rationale

Files modified:
- ResizeGizmoVisuals.ts: OBB wireframe and corner calculation
- HandleGeometry.ts: OBB-based handle positioning for all types
- ResizeGizmoConfig.ts: Disable edge handles
- ResizeGizmoManager.ts: Add utility scene access
- ScalingCalculator.ts: Uniform two-axis scaling (distance-ratio)
- types.ts: Remove TWO_AXIS mode
- diagramMenuManager.ts: XR pick predicate filtering
- abstractController.ts: Pointer and click filtering
- TODO.md: Documentation of changes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-14 07:06:06 -06:00
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