[vtkusers] vtkImageViewer vs. vtkRenderWindow

[David Gobbi]

Hi Randy,

The trick is the use a vtkRenderWindow and a vtkRenderWindowInteractor
to display the image, like so:

image -> vtkImageMapper -> vtkActor2D -> vtkRenderer -> vtkRenderWindow

Or it might be easier to use a vtkImageActor, and that will also allow
hardware-accelerated pan and zoom.  Note that in VTK 4.0
there is even a vtkInteractorStyleImage, but it is for use with a
vtkRenderWindow.

My advice is to avoid using the vtkImageViewer and the vtkImageWindow
within applications, they are fine for short test scripts and examples
but they aren't powerful enough or sophisticated enough to use in
a serious app.  Use vtkRenderWindow instead.

 - David

--
  David Gobbi, MSc                       dgobbi at irus.rri.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Fri, 1 Feb 2002, Randy Heiland wrote:

> I'm simply trying to figure out how to use vtkImageViewer from a Python script
> and have it stay up, like the vtkRenderWindowInteractor, iren.Start().
>
> --Randy
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