[vtkusers] Segmentation fault

[Goodwin Lawlor]

Hi Elena,

I coud be wrong but I dont think this is correct:

vtkSmartPointer<vtkPolyData> polydata = reader->GetOutput();


reader->GetOutput() returns a regular pointer to a vtkPolydata not a smart
pointer.

Try:

vtkPolyData *polydata = reader->GetOutput();

instead.

hth

Goodwin




On Mon, Apr 7, 2014 at 4:00 PM, 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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