[vtk-developers] Move a plane along its normal in vtkInteractorStyleTrackballCamera

[mrHiggins]

Hey guys and ladies! 

I have a polydata and use a vtkInteractionStyleTrackBallCamera to move
around. In a Special mode i can insert a plane and now i want wo make this
plane movable but only in one Dimension (normal of the plane). 

I made a subclass of vtkinteractionstyletrackballcamera and react on the
mousedown and mouseup Events. There i Color the plane so if you click on it
the plane change to red. What is the typical "vtk" way to move this plane? 

- own interaction style where i parse the mousemoving into world space to
know the direction i have to move the plane? 
- use normal interactionstyle "trackballcamera" and Change the style to
"trackballactor" after clicking the plane and Change back at the end? 
- use a widget? (i still have the Problem with the "placewidget()" method,
which wants a intptr instead of double[] for bounds in c#!?!?!?!).
 




is there any example of moving one object by drag and drop in a world you
normally use vtkinteractorstyletrackballcamera? 



Michael 



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