[vtkusers] Segmentation fault

[Bill Lorensen]

Have you applied
reader->Update();

before you request the reader's output?


On Mon, Apr 7, 2014 at 11:00 AM, elena bresciani
<elena.bresciani87 at gmail.com> wrote:
> Hello everybody!
>
> I need your help with a segmentation fault error.
> Using gdb I understood where it is generated but I don't know how to modify
> the code to make it run.
>
> Here's the portion of the code that I'm talking about:
>
>
> vtkSmartPointer<vtkPolyData> polydata = reader->GetOutput();
> (the reader is a vtkXMLPolyDataReader)
>
> vtkFloatArray *PointNormalArray = vtkFloatArray::SafeDownCast(
> polydata->GetPointData()->GetNormals() ) ;
>
> for(vtkIdType i = 0; i < PointNormalArray->GetNumberOfTuples(); i++) {....}
>
> everytime I call GetNumberOfTuples I have this error so I think the problem
> is on PointNormalArray.
>
> Can somebody help me?
>
> Thanks in advance
>
> Elena
>
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