[vtkusers] vtkImageViewer2 do not fit my needs

[David Doria]

> But this doesn't seem to work. Before I had StyleTrallbackActor, and when I
> changed to ImageStyle, I can see the diferences. But seems like my overrides
> do not want to work, it act just like I was using vtkInteractorStyleImage...
> What am I doing wrong?

There should be no difference. Note that vtkImageViewer2 simply tries
to make life easier by packaging up some of the renderers/styles etc.

http://www.vtk.org/doc/nightly/html/classvtkImageViewer2.html#_details

It seems to cause more confusion than anything else though... :)

David