Demonstrates how to combine multiple volumes using CPU.
Volume1 is a medical stack of image (3D head) and volume2 is a computed volume that contains only 0 and 1. Volume2 is used as a mask. Then we apply the following operation: "Volume1 x Volume2" and all values multiplied by 0 from the mask become transparent.
SoVolumeData SoDataCompositor SoMultiDataSeparator