[vtkusers] interactor styles with vtkTkRenderWindowInteractor.py

[Reinhold Niesner]

Dear vtk users, 
 
I'm experimenting a bit with interactor styles using Python.
I'm experiencing a weird behavior when trying to switch the interactor
style for vtkTkRenderWindowInteractor, like this:
 
pane = vtkTkRenderWindowInteractor(.)
#...
style = vtk.vtkInteractorStyleTrackballCamera()
pane.oldStyle = pane._Iren.GetInteractorStyle()     # <-----------------
!!!
pane._Iren.SetInteractorStyle(style)
 
 
Apparently, if the old style isn't being deleted, then both styles are
somehow active, superposed.
What I want is to be able to switch between the styles, back and forth.
Does anyone know how to do this?
I have appended a modified version of vtkTkRenderWindowInteractor.py, to
illustrate this. Press "x" to modify the style.
Any help greatly appreciated.
 
Reinhold
 
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