[vtkusers] How to compute normals for an vtkUnstructuredGrid

Franke, Stephan Stephan.Franke at inpro.de
Wed Jul 27 05:49:20 EDT 2005

Hi ,
I want to display my geometry with the Gouraud shading method. I have to
use a vtkUnstructuredGrid for some 
reason and do not know how to calculate normals for a grid like this.
But without normals I can not use the
Gouroud or Phong shading method for my geometry. So the question is how
can I calculate normals on a
vtkUnstructuredGrid? An example would be helpfully.
Thank you in advice for your help.
Best regards,
Stephan Franke
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