[vtkusers] BUG: Attached Script (Transparency bug)

[John Biddiscombe]

RE: Transparency Bug

Attached script creates lookuptable with alpha zero. Front sphere is
blue(=background colour, try changing it!), when it should be transparent

Changing alpharange in Lookuptable to 1.0 1.0 (see script) shows nicely
coloured sphere.

Suspect dodgy behaviour in mapper, but don't have time to look myself.

Can anyone verify (latest vtk nightly a few days ago) - that this is a
genuine bug

JB

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