[vtkusers] normals

[Remo Ziegler]

Hi,
    how can I be sure, that all normals are calculated the right way if
I have vtkPolyData. I tried to do something, but some normals are not
correct. How can I improve this? Here the code I used:

 vtkPolyDataNormals *normals = vtkPolyDataNormals::New();
 normals->SetInput(polyData);
 normals->ComputeCellNormalsOn();
 normals->SplittingOff();
 normals->ConsistencyOn();
 normals->Update();
 polyData = normals->GetOutput();

maybe somebody has a good idea?

Have a nice day!
Greets .... Remo