[vtkusers] RE : Newbie question: unstructuredGrid with voxels of different colours

[Mark Jefferson]

Hi, Teresa,
   you can try class vtkColorTransferFunction. for example:
 // Create a transfer function mapping scalar value to color (color)
  vtkColorTransferFunction *cTFun = vtkColorTransferFunction::New();
  cTFun->AddRGBPoint(   0, 1.0, 0.0, 0.0 );
  cTFun->AddRGBPoint(  64, 1.0, 1.0, 0.0 );
  cTFun->AddRGBPoint( 128, 0.0, 1.0, 0.0 );
  cTFun->AddRGBPoint( 192, 0.0, 1.0, 1.0 );
  cTFun->AddRGBPoint( 255, 0.0, 0.0, 1.0 );
  hope this could help you.
   M. J.
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