[vtkusers] vtkVolume - Is there a way to use clipping planes on it?

[Lisa Avila]

Hi Ramzy,


>>figure out how. Is there a way to remove chunks out of a volume? Not by 
>>scalar though. I could use a sphere or other builtin implicit function if 
>>necessary, but it seems that the other methods of doing stuff like this 
>>are not set up to work with vtkVolume's (as they are derived from vtkProp).
>>

Can you explain what you mean by "not set up to work with vtkVolume"?

You should be able to use either cropping (axis aligned planes - this is 
specific to volume mappers) or clipping (arbitrary planes - limited to 6 by 
OpenGL - this is supported at the superclass level for all 3D mappers) 
However, I suspect it will be hard to set up clipping planes to do what you 
want and most likely you will need to apply a sequence of imaging filters 
to your vtkImageData in order to isolate the structured you are interested 
it. You may want to also look into ITK for this (www.itk.org).

Lisa


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