[vtkusers] Generating Cell Data for a surface built from unstructured points

Joseph_Winston at veritasdgc.com Joseph_Winston at veritasdgc.com
Mon Sep 16 16:01:31 EDT 2002

Generating Cell Data for a surface built from unstructured points

I have a surface that was built from unstructured points using the
vtkShepardMethod that contains field data.  From reading the code, it
appears that the only way that I can pick the field data is to
generate cell data for the surface since unstructured points do not
have any connectivity.  However, I have not been able to correctly
generate the cell data thus I have not been able to pick my data.

My current approach is:

   vtkPolyDataConnectivityFilter * connectivityFilter =
   cout << connectivityFilter->GetNumberOfExtractedRegions() << endl;

   vtkCellData *cellData = connectivityFilter->GetOutput()->GetCellData();

The vtkPolyDataConnectivityFilter shows that I have one region, but I don't
see any cell data.
How should I be using the vtkPolyDataConnectivityFilter?


Jody Winston

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