[vtkusers] Clipping a vtkImagePlaneWidget

[Sara Broughton - CSCI/P2002]

Hello,

I am trying to divide a vtkImagePlaneWidget into 2 arbitrary sections
and then delete one of the sections.  The resulting ImagePlaneWidget 
would be shaped like a 3 or 4-sided irregular polygon.

So far, I have tried using vtkClipPolyData with an implicit function 
(vtkImplicitDataSet and vtkPlane alternately) to clip the widget.  
However, I am not able to clip the widget's texture using this technique.

Thank you in advance for your suggestions.

Sara