[vtkusers] wxVTKRenderWindowInteractor + vtkImageViewer2

[Mathieu Malaterre]

> It's probably convenient having ParallelProjectionOn, because one can
> render structures ANYWHERE in front of the image and they will be
> "aligned" with structures in the image.  In the light of this,
> personally I would prefer for parallel projection to remain active in
> vtkImageViewer2, but obviously the FirstRender bug must be fixed.
> 

Ok then, it makes sense. So please find again a patch :

http://www.creatis.insa-lyon.fr/~malaterre/vtk/iv2.patch

I moved the line into SetupInteractor, thus it won't affet the first render.
Also please note that I also add in my patch to fix James' remark:

http://public.kitware.com/pipermail/vtkusers/2003-April/017063.html

Thanks,
mathieu