[vtkusers] Actor Transparency

[Olivier Feys]

The easiest way for me is to create a scalar field on your grid, set the 
elements to be seen to a certain value (ex:1), and apply a colormap with 
alpha =0 for values other than 0.

Olivier


Richard Haney wrote:
> Does anyone know of a quick way to render just part of a vtkActor 
> transparent?  I have a triangular geometry rendered from a 
> vtkXMLUnstructuredGridReader and I would like only certain sections of 
> the total actor to be solid and the rest transparent.
>
> Is there a quick and easy way to do this with vtk4.2 ?
>
> Thanks in advance for any help/hints.
>
>
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