[vtkusers] Variable transparancy on vtkImageData

[Miguel Angel Rodriguez Florido]

	Please, have a look at:

 
http://markmail.org/search/?q=how+to+overlay&q=list%3Aorg.vtk.vtkusers#query:how%20to%20overlay%20list%3Aorg.vtk.vtkusers+page:1+mid:5yqzedtzblz5wipl+state:results

	Hth.

Mark Gooding wrote:
> I'm trying to render an image with transpanency proportional to the
> intensity the ImageActor input is being produced via
> vtkImageMapToWindowLevelColors, and I'm setting a vtkLookupTable for
> that. The alpha range of the vtkLookupTable (if set using
> SetAlphaRange) seems to make no difference to the transparency of the
> final ImageActor.
> 
> Is there a limitation in one of these classes which prevents this from
> working as I expected?
> 
> Once again my searching on the web/this mailing list hasn't helped me
> answer this question.
> 
> Cheers,
> 
> Mark
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