[vtkusers] Types of Bounds coordinates (?)

[gemo at tele.ucl.ac.be]

Hello,
I need to calculate the area occupied by a 3D annotation in the display.

The annotation is created as vtkVectorText, then associated to
vtkPolyDataMapper and to the vtkFollower as actor for the rendering.

My question is what kind of coordinates does the method GetBounds of the
actor return? Display bounds?

And the vtkPolyDataMapper? World coordinates?

Thanks a lot for the help,
Monica