[vtkusers] Interactive clipping

[Benjamin King]

Hi,

using Tcl, I want to clip a volume with a clipping plane.
Currently, the origin of the plane can be moved with a scale
widget and in the procedure that is called when the user modifies
the scale, I tried to
    1) Render() the renderer
and 2) Update() its volume
after setting the new origin, but the volume isn't correctly
updated until I click in the vtkTkRenderWidget that contains the
renderer _and_ move the mouse (clicking alone doesn't change
anything either). I used BindTkRenderWidget to interact with the
renderer.

What's wrong?

  Benni

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