- void Invalidate() noexcept { dirty_model = dirty_save = true; }
- void InvalidateModel() noexcept { dirty_model = true; }
- void ClearModel() noexcept { dirty_model = false; }
+ void Ref() noexcept { ++ref_count; }
+ void UnRef() noexcept { --ref_count; }
+ bool Referenced() const noexcept { return ref_count > 0; }
+
+ void Invalidate() noexcept { dirty_mesh = dirty_save = true; }
+ void InvalidateMesh() noexcept { dirty_mesh = true; }
+ void ClearMesh() noexcept { dirty_mesh = false; }