[vtkusers] Image plane widget + color transfer function?

[dean.inglis at camris.ca]

I guess you are back to vtkLookupTable again... :(

Dean

Well, yes, that will make the image-to-colors object output alpha values.
But I see no way to *specify* the alpha values anywhere, as a 
vtkColorTransferFunction only takes RGB triplets.
Maybe I wasn't completely clear, but I want to set an alpha values per 
color table entry, not an overall alpha value for the whole IPW.

Paul