[vtkusers] getting curvature

[Jonathan Morra]

I have a vtkPolyData and I would like to get the curvature at every point.
 I noticed that there is a vtkCurvatures class.  Here's the code that I have
written so far

                vtkCurvatures curvatures = new vtk.vtkCurvatures();
                curvatures.SetInput(currentPolyData);
                curvatures.SetCurvatureTypeToGaussian();
                curvatures.Update();
                vtkPolyData curvatureData = curvatures.GetOutput();
However, I don't know what to do with the curvatureData vtkPolyData, and how
to extract the curvature at every point.

Any help would be greatly appreciated.

Thanks
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