[vtkusers] Fixed-size text in 3D : vtkVectorText + vtkFollower or vtkCaptionActor2D?

[Luca Pallozzi Lavorante]

Hi everybody,

I am trying to visualize text labels in 3D space. I have successfully used
vtkVectorText + vtkFollower. But the text is scaled as I zoom in /out of my
3D objects (geologic wells, the labels are their names). I have seen that
there is a vtkCaptionActor2D class which displays a fixed-size text
attached to a 3D point. This is almost what I need. The problem is that the
text should get occluded by objects nearer to the camera as I rotate them.
Apparently, the text generated by vtkCaptionActor2D is drawn on top of
everything.
Maybe this is a common issue and I have verified on the list that it has
been discussed before. Can anybody give me some hint on how to do it?
Sorry if I am asking a trivial or recurring question.

  Thank you in advance,

  Luca Pallozzi Lavorante
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