[vtkusers] vtkImageData -> vtkVolumeMapper looks backwards

[Amy Squillacote]

Try vtkImageFlip: 
http://www.vtk.org/doc/nightly/html/classvtkImageFlip.html.  You 
probably want to set FlipAboutOrigin to 1.

- Amy

At 11:45 PM 8/26/2005, powerhouseofexcellence wrote:
>Hi all,
>
>I load 50 images into a vtkImageData object one at a time. When I hand
>this image data object to one of the volume renderers, it seems my
>slices are 'backwards', in that I loaded my first slice at position 0,
>next slice at position 1, etc. But my slices come towards the viewer,
>instead of marching away from the viewer, I guess this is because
>VTK's z axis goes positive towards the viewer. I changed the spacing
>of my image data object to be negative along the z axis to flip this
>so it looks correct, but the render time is slowed down and is choppy
>if I do that. Is there anyways to reconfigure the coordinate system or
>do I manually have to load slice 0 into slot # 50 to get this to be
>volume rendered in the 'right' order?
>
>Thanks
>_______________________________________________
>This is the private VTK discussion list.
>Please keep messages on-topic. Check the FAQ at: 
>http://www.vtk.org/Wiki/VTK_FAQ
>Follow this link to subscribe/unsubscribe:
>http://www.vtk.org/mailman/listinfo/vtkusers