Coming from VisIt libsim world, I wonder how it is possible to define a point mesh (grid) in ParaView catalyst. Actually in VisIt, a point mesh (grid) is a set of 2D or 3D points where the nodes also constitute the cells in the mesh. I have checked
vtkPointSet, but it seems that this grid type cannot be used directly and the derived grid types should be used instead.
Any ideas? As an example, you can see the picture of a 3D point mesh, adopted from VisIt user manual below: