[vtkusers] vtkUnstructuredGrid problem in Linux

[Todd Schneider]

Hi everyone, I recently switched from using VTK with .NET 2003 to using
Linux with gcc 3.2.2.  Now when I run this sample line of code that used
to work fine in .NET, I get the error:

no matching function for call to `vtkGeometryFilter::
   SetInput(vtkUnstructuredGrid*)'
/vtkDataSetToPolyDataFilter.h:44: candidates are:
   virtual void vtkDataSetToPolyDataFilter::SetInput(vtkDataSet*)

The code is

   vtkDelaunay3D *shell = vtkDelaunay3D::New();
   shell->SetInput(inputDataSet);
   shell->SetTolerance(2);
   shell->SetAlpha(alpha_input);
   shell->BoundingTriangulationOff();

   vtkGeometryFilter *extract_poly_data = vtkGeometryFilter::New();
   extract_poly_data->SetInput(shell->GetOutput());

The output of shell is a vtkUnstructuredGrid, which IS a vtkDataSet, so
I don't quite see how to fix this problem...any thoughts? Thanks for the
help!

Todd