[vtkusers] Problem with colours using vtkTensorGlyph

[Leticia Fernandez]

Hello!

I'm using the class vtkTensorGlyph to rotate and scale ellipsoids 
( ExtractEigenvaluesOn() ) It works perfect but I don't know why a 
few of them are colored in black, in spite of I'm giving another color by vtkActor.
That just happen in some of them and it makes me think that there must be something 
wrong but It's a very simple code  so... i have no clue of what could be.. 

    tglyph = vtk.vtkTensorGlyph()
    tglyph.SetInput(stPts)
    tglyph.SetSource(source.GetOutput())
    tglyph.ExtractEigenvaluesOn()
    tglyph.ThreeGlyphsOff()
    tglyph.UpdateWholeExtent()
    tglyph.ColorGlyphsOff()
    tglyph.ScalingOff()
    
Any idea? Thanks in advance!

** Leticia


		
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