[vtkusers] VTK slow to display 300 vtkArrowSource in real-time

[Olivier Ameline]

Thanks, it's working with vtkGlyph3D : I can position and orientate the 300
arrows with only one actor.

But now, I'm trying to add labels that follow the arrows. 
I was doing this with vtkVectorTexts, but this requires to define 300
vtkFollowers.

Is there also a way to define only one vtkFollower ?

I tried to put the vtkVectorTexts in a vtkGlyph3D, and define ony one
follower for the entire vtkGlyph3D,
but only the first vtkVectorText follows its arrow.



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