[vtkusers] Segmentation fault

[Bill Lorensen]

Perhaps the reader is returning normals as doubles?

On Mon, Apr 7, 2014 at 11:32 AM, elena bresciani
<elena.bresciani87 at gmail.com> wrote:
> 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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>>
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>
>



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