[vtkusers] vtkPointHandleRepresentation3D - mouse and handle are not in sync

[Martin Raabe]

Hello folks,
I use vtkPointHandleRepresentation3D to position a point handle on top
of an XRay image. I tried with vtkPointHandleRepresentation2D, which
works nice except, that I can't retrieve the pixel coordinates from the
world coordinates.
So I use vtkPointHandleRepresentation3D, where I can easily retrieve the
pixel coordinates from the world coordinates (one to one).

Now my problem:
When I move the handle, the curors moves out of sync related to the handle.
I suspect conversion problems (inaccuracies) as the cause.
Did anyone observe this symptom and did anyone find a solution for that?

I greatly apreciate your help.

Best regards,

Martin Raabe