[vtkusers] Memory leak

[Jothybasu Selvaraj]

Thanks for both!

Fixed it finally.

Jothy

On Tue, May 15, 2012 at 3:30 PM, Hal Canary <hal at cs.unc.edu> wrote:

> On 05/15/2012 10:19 AM, Jothybasu Selvaraj wrote:
>
>> Hi all,
>>
>> I have a pipeline like this, every time I call this function the memory
>> increases ~10MB. How can I fix this?
>>
>> I have a imgData already instantiated like this
>>
>> vtkSmartPointer<vtkImageData>**img=
>>      vtkSmartPointer<vtkImageData>:**:New();
>>
>> vtkSmartPointer<**vtkXMLImageReader>rd=
>>      vtkSmartPointer<**vtkXMLImageReader>::New();
>> rd->SetFilename("filename");
>> rd->Update();
>>
>> img=rd->GetOutput();
>>
>>
>> //Now I repeat this function several times
>>
>>    vtkSmartPointer<**vtkImageShiftScale>scaler=
>>            vtkSmartPointer<**vtkImageShiftScale>::New();
>>    scaler->SetInput(img);*//is this correct way of doing?*
>>
>>
>>    scaler->SetScale(0.5);//**Multiply
>>    scaler->**SetOutputScalarTypeToDouble();
>>
>>    //scaler->ReleaseDataFlagOn();**//Tried with this too
>>    scaler->Update();
>>
>>    img=scaler->GetOutput();*//is this correct way of doing?*
>>
>>
>> I am beginner in C++, so I am expecting some silly mistakes.
>>
>>
> Nine out of ten times , you want to do
>        b->SetInputConnection(a->**GetOutputPort());
> instead of
>        b->SetInput(a->GetOutput());
>
> See http://www.vtk.org/Wiki/VTK/**FAQ <http://www.vtk.org/Wiki/VTK/FAQ> .
>
> Is this what you want to do?
>
>
> vtkSmartPointer<**vtkXMLImageReader>rd=
>     vtkSmartPointer<**vtkXMLImageReader>::New();
> rd->SetFilename("filename");
> rd->Update();
> vtkAlgorithmOutput * outputPort = rd->GetOutputPort();
>
>
> //Now I repeat this function several times
>  {
>  vtkSmartPointer<**vtkImageShiftScale>scaler=
>          vtkSmartPointer<**vtkImageShiftScale>::New();
>  scaler->SetInputConnection(**outputPort);
>
>  scaler->SetScale(0.5);//**Multiply
>  scaler->**SetOutputScalarTypeToDouble();
>  scaler->Update();
>  outputPort = scaler->GetOutputPort();
>  }
>
> //then
> do_something_with(outputPort);
>
>
> --
> Hal Canary
> http://cs.unc.edu/~hal/
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-- 
Jothy
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