Opacity with Actors2D

[Ken Martin]

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>Does anyone know how to make an vtkActor2D with vtk23 transparent?
>
>actor->GetProperty()->SetOpacity(0.5) does not seem to work with 2D
>actors. By now, I'm browsing through the different classes but do not
>have any clue. Can someone of you tell me?

Currently opacity is not implemented for the 2D actors.
We hope to add that in the future.

- Ken



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