[vtkusers] How VTK assign color to points

[Jana Sefcikova]

Hi Dzenan, I think that OpenGl uses Phong reflectance model.
I experimented with VTK and my implementation and I did not obtain same
result:
http://vtk.1045678.n5.nabble.com/What-illumination-formula-use-VTK-it-does-not-look-as-pure-Phong-tc5714982.html
I never comared in such way Opengl and my code, but currently I need it for
VTK.
I am looking for some method, or shader, where it is computed ...

Thanks,
Jana
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