[vtkusers] Segmentation fault

[elena bresciani]

yes


2014-04-07 17:18 GMT+02:00 Bill Lorensen <bill.lorensen at gmail.com>:

> 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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