The minimum region entirely enclosing the mesh’s vertex positions, expressed in the model coordinate system of the mesh.
- iOS 9.0+
- macOS 10.11+
- tvOS 9.0+
- Model I/O
This property’s value is valid only if the mesh contains vertex data for the
MDLVertex attribute. If the mesh does not contain position information, this property’s value is a bounding box whose
max coordinate is greater than its
Reading this property for the first time processes the mesh’s vertex data to calculate and cache a bounding box. Reading this property thereafter returns the cached value.