Redrawing outside viewport on resize

[Hank Childs]

Hello All,

I have a setup where I am only drawing to part of the render window.
When I resize the window the area outside the viewport does not get
redrawn as the background color and still has a portion of the original
image that was previously only inside the viewport.

...

vtkRenderer       *ren = vtkRenderer::New();
    ren->AddActor(actor);
    ren->SetViewport(0.2, 0.2, 0.8, 0.8);

vtkRenderWindow   *renWin = vtkRenderWindow::New();
    renWin->AddRenderer(ren);

...


It seems to me that the RenderWindowInteractor should tell the Renderer(s) 
to redraw via the RenderWindow whenever the size of the window changes.

Does anybody know of a reason why this isn't a good idea?  I'll send a fix
if this is a legitimate problem.


Also, it would be really nice if there was an archive so I could make sure
the gurus hadn't already addressed this before spamming everybody.

Thanks,
Hank Childs

____________________________________________________________________________

Hank Childs
MeshTV
Lawrence Livermore National Laboratory



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