[vtkusers] This code gives memory leak.. Why?

[Aashish Chaudhary]

quickly looking

you would have to call delete on contourActor

as when you do AddActor that will also increment the ref count.

Use vtkSmartPointer.



On Wed, Jul 7, 2010 at 9:58 AM, Rakesh Patil <rakeshthp at in.com> wrote:

> Hello,
>
> I have this particular function to display contours.. When i iterate this
> through a loop, for different timestep,
> each time, i set new set of scalars for unstructuredGrid (uGrid) through
> the means of bathyArray.
> I get the desired output as i need, but i see that there exists some memory
> leak.. at each iteration, some amount
> of memory is being held.. I dont know by whom and where.. Below is the code
>
> myClass
> {
> ...
> vtkActor2D *element NumberActor;
> ...
> public:
> ... // Constructors and destructors
>
> void DisplayContour();
> ...
> };
>
> Now, i have the function body as follows:
>
> void myClass::DisplayConto ur()
> {
>
> uGrid->GetPointData()->SetScalars( bathyArray);
> uGrid->Update();
>
> vtkGeometryFilter *gf = vtkGeometryFilter::New();
> gf->SetInput( uGrid );
>
> vtkThreshold *thr = vtkThreshold::New();
> thr->SetInputConnection( gf->GetOutputPort() );
> thr->ThresholdByUpper( BAD_VALUE );
> thr->Update();
>
> vtkContourGrid *contGrid = vtkContourGrid::New();
> contGrid->SetInputConnection( thr->GetOutputPort());
> contGrid->GenerateValues(n, dataRange);
>
> vtkDataSetMapper *ldm = vtkDataSetMapper::New();
> ldm->Set InputConnection( contGrid->GetOutputPort() );
> ldm->SetScalarRange( dataRange);
>
> pRenderer->RemoveActor(contourActor);
>
> if(contourActor)
> {
> contourActor->Delete();
> contourActor = NULL;
> }
>
> contourActor = vtkActor::New();
> contourActor->SetMapper(ldm);
> pRenderer->AddActor( contourActor );
>
> gf->Delete();
> thr->Delete();
> contGrid->Delete();
> ldm->Delete();
>
> }
>
>
> Can anyone help me or give some clue as what is the mistake i have been
> doing..?? What can i do to avoid this memory leaks.,?
>
> Thanks in advance
>
> Regards
> Rakesh P atil
>
>
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-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com
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