[vtkusers] Zooming the vtkImageViewer

[Brian Alexander Todd]

Erik,

Another possibility is to texture your image onto
a plane and use a vtkRenderWindow instead of 
vtkImageWindow.  Then zooming is all taken care of
for you.

Brian

At 08:58 AM 6/8/00 +0100, Matt Clarkson wrote:
>You do this by connecting the volume
>to a vtkImageReslice filter, and extracting
>a 2D slice and connecting this to the viewer.
>You set the vtkImageReslice filter
>to extract a 2D image, ie. Set the extent to
>0 255 0 255 0 0
>
>The vtkImageReslice can then be adjusted to give
>different fields of view. Effectively you are resampling
>a 2D image each time rather than a 3D volume
>
>I didnt know that the image viewer had a camera
>as such.
>
>Anyway, hope this helps
>
>Matt
>
>
>Erik Sobel wrote:
>> 
>> Does anyone know how to zoom an image in a vtkImageViewer (without
>> resampling the volume - since this messes up other parts of my
>> pipeline)?   Is it possible to just grab the camera used by the
>> vtkImageViewer and zoom it?
>> 
>> Thanks,
>> Erik
>> 
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