[Paraview] Correct Extents for vtkImageData + Crash in ParaView 3.6.2

Utkarsh Ayachit utkarsh.ayachit at kitware.com
Wed Jan 27 14:38:16 EST 2010


If you just make the reader produce a single output (change the number
of output ports to 1) does it work?

Utkarsh

On Wed, Jan 27, 2010 at 10:16 AM, Mike Jackson
<mike.jackson at bluequartz.net> wrote:
> I am reading a data file that is a has dimensions 189 x 201 x 1.
>
>  During the RequestInformation I set the WHOLE_EXTENT to:
>  int NumEvenCols = 189;
>  int NumRows = 201;
>  extents[0] = 0;
>  extents[1] = NumEvenCols-1;
>  extents[2] = 0;
>  extents[3] = NumRows-1;
>  extents[4] = 0;
>  extents[5] = 0;
>
> outInfo->Set( vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), extents, 6 );
>
> Then in the RequestData() method I initialize each vtkImageData object
> (there are 6 output ports):
> //------------------
> output->SetScalarTypeToFloat();
> int xDim=NumEvenCols;
> int yDim=NumRows;
> int zDim=1;
> output->SetDimensions( xDim, yDim, zDim );
> output->SetNumberOfScalarComponents( 1 );
> output->AllocateScalars();
> output->GetPointData()->GetScalars()->SetName("Data");
> output->GetPointData()->SetActiveScalars("Data");
> //------------------
>
> The data seems to be read OK but when the GUI tries to finish up the
> display I get an "Unhandled exception at 0x01462f3f (QtCored4.dll) in
> paraview.exe: 0xC0000005: Access violation writing location
> 0xcdcdcdcd."
>  with the following stack trace (Visual Studio 2008, Qt 4.6.1)
>
>        QtCored4.dll!QBasicAtomicInt::ref()  Line 319 + 0x8 bytes       C++
>        QtCored4.dll!QString::QString(const QString & other={...})  Line 715
> + 0x51 bytes    C++
>>       pqCore.dll!pqView::getViewType()  Line 79 + 0x31 bytes  C++
>        pqCore.dll!pqDisplayPolicy::getPreferredView(pqOutputPort *
> opPort=0x0709cee0, pqView * currentView=0x06fbb598)  Line 187 + 0x18
> bytes   C++
>        pqCore.dll!pqDisplayPolicy::createPreferredRepresentation(pqOutputPort
> * opPort=0x0709cee0, pqView * view=0x06fbb598, bool
> dont_create_view=false)  Line 240 + 0x17 bytes  C++
>        pqCore.dll!pqPendingDisplayManager::createPendingDisplays(pqView *
> activeview=0x06fbb598)  Line 178 + 0x22 bytes   C++
>        pqCore.dll!pqPendingDisplayManager::createPendingDisplays()  Line 255   C++
>        pqCore.dll!pqPendingDisplayManager::qt_metacall(QMetaObject::Call
> _c=InvokeMetaMethod, int _id=5, void * * _a=0x00d4c870)  Line 92        C++
>        QtCored4.dll!QMetaObject::metacall(QObject * object=0x0638cc30,
> QMetaObject::Call cl=InvokeMetaMethod, int idx=9, void * *
> argv=0x00d4c870)  Line 238      C++
>        QtCored4.dll!QMetaObject::activate(QObject * sender=0x06a952b0,
> const QMetaObject * m=0x67971f34, int local_signal_index=1, void * *
> argv=0x00000000)  Line 3264 + 0x27 bytes        C++
>        pqComponents.dll!pqObjectInspectorWidget::accepted()  Line 141 +
> 0x15 bytes      C++
>        pqComponents.dll!pqObjectInspectorWidget::accept()  Line 502    C++
>        pqComponents.dll!pqObjectInspectorWidget::qt_metacall(QMetaObject::Call
> _c=InvokeMetaMethod, int _id=9, void * * _a=0x00d4c9fc)  Line 114 +
> 0x8 bytes       C++
>        QtCored4.dll!QMetaObject::metacall(QObject * object=0x06a952b0,
> QMetaObject::Call cl=InvokeMetaMethod, int idx=36, void * *
> argv=0x00d4c9fc)  Line 238      C++
>        QtCored4.dll!QMetaObject::activate(QObject * sender=0x06a98ac0,
> const QMetaObject * m=0x65a88ca0, int local_signal_index=2, void * *
> argv=0x00d4c9fc)  Line 3264 + 0x27 bytes        C++
>        QtGuid4.dll!QAbstractButton::clicked(bool _t1=false)  Line 204 +
> 0x15 bytes      C++
>        QtGuid4.dll!QAbstractButtonPrivate::emitClicked()  Line 548     C++
>        QtGuid4.dll!QAbstractButtonPrivate::click()  Line 540   C++
>        QtGuid4.dll!QAbstractButton::mouseReleaseEvent(QMouseEvent *
> e=0x00d4d2d4)  Line 1122        C++
>        QtGuid4.dll!QWidget::event(QEvent * event=0x00d4d2d4)  Line 7979        C++
>        QtGuid4.dll!QAbstractButton::event(QEvent * e=0x00d4d2d4)  Line 1081    C++
>        QtGuid4.dll!QPushButton::event(QEvent * e=0x00d4d2d4)  Line 680 C++
>        QtGuid4.dll!QApplicationPrivate::notify_helper(QObject *
> receiver=0x06a98ac0, QEvent * e=0x00d4d2d4)  Line 4298 + 0x11
> bytes   C++
>        QtGuid4.dll!QApplication::notify(QObject * receiver=0x06a98ac0,
> QEvent * e=0x00d4d2d4)  Line 3863 + 0x2f bytes  C++
>        QtCored4.dll!QCoreApplication::notifyInternal(QObject *
> receiver=0x06a98ac0, QEvent * event=0x00d4d2d4)  Line 704 + 0x15
> bytes   C++
>        QtCored4.dll!QCoreApplication::sendSpontaneousEvent(QObject *
> receiver=0x06a98ac0, QEvent * event=0x00d4d2d4)  Line 218 + 0x38
> bytes   C++
>        QtGuid4.dll!QApplicationPrivate::sendMouseEvent(QWidget *
> receiver=0x06a98ac0, QMouseEvent * event=0x00d4d2d4, QWidget *
> alienWidget=0x00000000, QWidget * nativeWidget=0x06a98ac0, QWidget * *
> buttonDown=0x65c8fe9c, QPointer<QWidget> & lastMouseReceiver={...},
> bool spontaneous=true)  Line 2961 + 0xe bytes   C++
>        QtGuid4.dll!QETWidget::translateMouseEvent(const tagMSG & msg={...})
>  Line 3230 + 0x2a bytes C++
>        QtGuid4.dll!QtWndProc(HWND__ * hwnd=0x001c0348, unsigned int
> message=514, unsigned int wParam=0, long lParam=1179701)  Line 1623 +
> 0xc bytes       C++
>        user32.dll!76836238()
>        [Frames below may be incorrect and/or missing, no symbols loaded for
> user32.dll]
>        user32.dll!768368ea()
>        user32.dll!76836899()
>        user32.dll!76837d31()
>        user32.dll!76837dfa()
>        QtCored4.dll!QEventDispatcherWin32::processEvents(QFlags<enum
> QEventLoop::ProcessEventsFlag> flags={...})  Line 770   C++
>        QtGuid4.dll!QGuiEventDispatcherWin32::processEvents(QFlags<enum
> QEventLoop::ProcessEventsFlag> flags={...})  Line 1139 + 0x15
> bytes   C++
>        QtCored4.dll!QEventLoop::processEvents(QFlags<enum
> QEventLoop::ProcessEventsFlag> flags={...})  Line 150   C++
>        QtCored4.dll!QEventLoop::exec(QFlags<enum
> QEventLoop::ProcessEventsFlag> flags={...})  Line 197 + 0x23 bytes      C++
>        QtCored4.dll!QCoreApplication::exec()  Line 981 + 0x15 bytes    C++
>        QtGuid4.dll!QApplication::exec()  Line 3578     C++
>        paraview.exe!main(int argc=1, char * * argv=0x03a918c8)  Line 71 +
> 0x8 bytes       C++
>        paraview.exe!__tmainCRTStartup()  Line 582 + 0x19 bytes C
>        paraview.exe!mainCRTStartup()  Line 399 C
>
> Now, what is odd is that if I set the Z Extent from 0 to 1, then I get
> a rendering except that the rendering is wrong because there are now 2
> slices in the z direction. So what am I doing wrong? I can send code
> and data file if necessary.
> _________________________________________________________
> Mike Jackson                  mike.jackson at bluequartz.net
> BlueQuartz Software                    www.bluequartz.net
> Principal Software Engineer                  Dayton, Ohio
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