[vtkusers] Converting PolyData to ImageData

[Xianjin Yang]

Hi Paul,

This is the part of pipeline I used. But I am afraid that the Shepard method
is too slow. Will someone please suggest a faster algorithm? Thanks.


 vtkShepardMethod *shepard = vtkShepardMethod::New();
 shepard->SetInput(polydata);
 ....
 vtkImageCast *imgcast = vtkImageCast::New();
 imgcast->SetInput(shepard->GetOutput());
 ....
 volumeMapper->SetInput(imgcast->GetOutput());
 ....


Yang


-----Original Message-----
From: Paul McGuinness [mailto:mcguinpg at maths.tcd.ie] 
Sent: Friday, March 12, 2004 11:50 AM
To: vtkusers
Subject: [vtkusers] Converting PolyData to ImageData



Hi All,

I am visualizing complex structures using Surface Evolver, using this
software I output all the vertices and the facets information (coordinates,
etc) into a datafile. I wrote a vtk program that reads in this information
and using vtkPolydata vtkPoints vtkCellArray I rebuild my structure
prefectly, but I would like to convert this structure which is polydata to
imagedata such that I can do volume rendering on the structure and get some
really interesting pictures.

Does anyone know how to do this, or an easier way I can do this?

Thanks,
Paul.
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