[vtkusers] Cutters under vtk control

[D.M.P.Davies]

Hi users,

    I use vtkTkRenderWindow from Tcl/tk and have generated multiple
cutters.

In order to delete a cutter I have looked at the vtkActor instances and
removed from
the renderer the actor . (i.e renderer RemoveActor cutter($i) for a few
$i's),

I then delete the vtk objects in the pipeline including the actor.

Unfortunately the actor is removed from the renderer sometimes (but more
often not)
- It seems  from the pipline analyser that vtkTempxx are regenerated  as
a
vtkOpenGLActor  object  which I can sometimes delete.

Am I missing something obvious  (like Update or Modified) - or is  it a
known bug?

Would like help!

Many thanks
 Dave davies
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