[vtkusers] How to get data ptr from the vtkpolydata?

[Lin M]

Hi all,

I try to get the data ptr which I think is a double * pointing to a double
array from vtkpolydata but I met an access violation when I use

double *skullTemplate =
vtkDoubleArray::SafeDownCast(m_SkullMesh->GetOutput()->GetPoints()->GetData())->GetPointer(0);

m_SkullMesh is a vtkPolyData.

How can I do to get it work? Thank you!

Best,
Lin
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