- When a modifier was below the bed and all the object parts above, it would clip
the modifier but not triangulate the cut.
- When an object part was below, it would triangulate all modifiers with
opaque orange color.
Both should now be fixed.
1. Do not show what's below the bed when a gizmo is open
2. Triangulate the cut so people don't see inside
3. If regular clipping plane is used, the cuts are mutually clipped by one another
4. Painting itself ignores the hidden part of the object
- modifiers are not rendered in neutral color when a painting gizmo is open, so they are distinguishable from model parts
- modifiers are now correctly handled by clipping plane (the cut was not triangulated for them)
Removed unused code
Fixed a clipping-plane related crash
Fixed a crash in hollowing gizmo when no hollowed mesh was provided
Forbid opening the gizmo when a part of an object is selected
ObjectClipper tracks active mesh (incl. possible hollowing), remembers clipping plane position and can render the cut on demand
Hollowing gizmo uses the new infrastructure
The raycaster manages a MeshRaycaster object that the gizmo can ask to perform raycasts
If the hollowed mesh tracker is enabled and the hollowed mesh is newly calculated/invalidated, the raycaster automatically updates.
