[vtk-developers] vtkAngularPeriodicFilter and vtkTransformFilter

[Sujin Philip]

Hi Developers,

I am working on some changes to vtkAngularPeriodicFilter and I have noticed
that for some cases it uses vtkTransformFilter to generate the result,
instead of using mapped arrays (vtkAngularPeriodicDataArray).

Going through the code, it looks like vtkTransformFilter behaves
differently than vtkAngularPeriodicFilter. Any field that has 3 or 9
components is transformed in vtkAngularPeriodicFilter but
vtkTransformFilter only transforms the normal
(vtkDataSetAttributes::GetNormals()) and vector
(vtkDataSetAttributes::GetVectors()) arrays.

I am thinking of changing vtkTransformFilter to apply transformation on all
3 and 9 components arrays. I wanted to know if there is any reason this
should not be done.

Thanks
Sujin
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