[vtkusers] Re: MarchingCubes rgba

[Jeremy Winston]

Rodolfo Palacios wrote:
> Hello everyone!
> 
> I've been searching the net and kitware archives and I haven't find an 
> answer... maybe you can help me.
> 
> I want to know if it is possible to create a volume with 
> vtkMarchingCubes from an rgba (four scalar components) image volume, or 
> maybe there is another filter that can achieve this task.

Since presumably all 4 components are independent,
the only way that makes any sense (AFAIK) would be
to composite the the components together first, and
then procede as normal.

Cf. vtkImageLuminance
     http://www.vtk.org/doc/nightly/html/classvtkImageLuminance.html

HTH,
-Jeremy