[vtkusers] Recreating the camera behavior Paraview

[Tijmen Klein]

I'm not sure if I should post this in the VTK or Paraview mailinglist, but
since I'm trying to achieve something in VTK, I decided that posting it here
is more relevant.

I am trying to recreate the camera (rotation) behavior of Paraview in VTK.
When there are multiple sources in Paraview (for example: a Box and a Cone),
then these sources always seem to rotate around the origin of the scene.
When the camera is panned (middle-mouse or shift + right mouse), a rotation
(left mouse) still results in a rotation around the origin of the scene.

However, in VTK this behavior is different. In the case
of vtkInteractorStyleTrackballCamera, after a pan of the camera, the scene
seems to rotate around the focal point of the camera (instead of the origin
of the scene). This makes the rotating behavior counter-intuitive (for my
application).
vtkInteractorStyleTrackballActor could work for this, but only with 1 Actor.
When there are more actors, it only allows to modify 1 object at the same
time.

(How) is it possible to recreate the Paraview camera behavior in VTK?


Tijmen
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