[vtkusers] Change to vtkImageViewer

[David Gobbi]

On Wed, 10 Oct 2001, Ken Martin wrote:

> Yes, that is a big benefit. Actually I have created vtkImageViewer2
> and vtkInteractorStyleImage which do this in vtk 4.0. They are used by
> the Imaging/Testing/Tcl/Spectrum.tcl test right now. Instead of right
> mouse rotating it performs window level. In the future I imagine the
> interactor style will support "move to the next slice" etc.

Ah, well, shows how much attention I've been paying lately ;)
I'll have to spend some time taking a good look at all the changes
that have occurred since the 3.x days.

 - David