VtkExporter of ContourFilter PolyData does not export colors
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
I build a Vtk pipeline containing a vtkContourFilter containing 11 values and a color LUT scaled to the range of the input data. But, in my output '.OBJ' file, or '.IV' I see one color -- WHITE.
I export the vtkContourFilter output Wavefront '.OBJ' as follows:
vtkOBJExporter objxport objxport SetInput renWin objxport SetFilePrefix $outFilePrefix objxport Write
When I add: renWin Render I see a nice picture of my rainbow-colored set of iso-surfaces
vtkOBJExporter also exports a $outFilePrefix.mtl file, containing rendering attributes for the polygon geometry stored in the $outFilePrefix.obj file I am expecting, in my output $outFilePrefix.mtl, I see:
wavefront mtl file written by the visualization toolkit
newmtl mtl1 Ka 1 1 1 Kd 1 1 1 Ks 1 1 1 Ns 1 Tf 0.4 0.4 0.4 illum 3
I see one material with opacity 0.6, as I specified, but -- WHITE. In $outFilePrefix.obj, there is one group, g grp1 and one material reference, usemtl mtl1.
I see similar results using vtkIVExporter.