VDB Modify operator

The VDB Modify operator can be used to mathematically transform voxels in a VDB.

The VDB Modify operator is at the heart of all VDB operations within tyFlow. It can be used to initialize various grid types (velocity, uvw), composite voxel values together, transfer surface properties, etc. Understanding how this operator works, and harnessing its abilities, is the key to effectively working with VDBs within tyFlow.

The documentation for this operator is not yet complete, and will be uploaded at a later date.