[vtkusers] actor's rotation axis position

[Raul Santana]

Hi,

I have two vtkActors  and one  vtkAssembly, and I want to change the 
position of the rotation axis for the actors and the assembly. I've used 
the SetOrigin function, but this produces the actors to be moved in 
conjunction with their rotation axis to the specified point. I need to 
change the position of the rotation axis relative to the actor so that 
the actor stay in the original position and rotates around the new 
rotation point. How can i do it?

thank you