[vtkusers] Simple clip plane example?

[Bertwim van Beest]

I am trying to find my way in VTK. 

Can somebody please point me out how to do the following:

- I have an vtkUnstructuredGrid with data values defined at the
vertices.
- I now want to slice through this model with a clipping plane.
- I want to be able to move (rotate, translate) the clipping plane with
the mouse.

A small example would be very much appreciated.

Thanks in advance. 

Bertwim