Reduces the voxel array to cover only the portion of its volume not covered by another voxel array.
- iOS 9.0+
- macOS 10.11+
- tvOS 9.0+
- Model I/O
The voxel array to subtract from this voxel array.
After a difference operation, the voxel array contains only those voxels that were present in the original array and not present in the specified array. That is, a difference operation creates a voxel array representing the space where one volume does not overlap another.
Performing a union, intersection, or difference operation clears out shell level information from all voxels in the array. (That is, the w component of every
MDLVoxel value in the voxel array is reset to 0.)