[vtkusers] Can I extract tetrahedra from vtkConvexPointSet and then discard ConvexPointSet?

[s comp]

I am using 2 cell types in an unstructured grid:
 
Voxels and ConvexPointSets
 
Apparently the ConvexPointSet is broken into tetrahedra for generating isosurfaces.
 
I would like to know if I can substitute these tetrahedra for the ConvexPointSet into the unstructured grid?
(Since a lot of tools dont seem to work for this cell type)
 
Thanks,
 
Sonam



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