[Insight-users] Smart pointer to filter output

[Lodron, Gerald]

It does not compile! Now I found a way but it does not look very nice:

void setSourceImage(vtkImageData* image) {
       m_TargetConnector= SourceConnectorType::New();
       m_TargetConnector->SetInput(image);        
	 //m_TargetImage= m_TargetConnector->GetOutput(); //does not work 
	 m_TargetImage = const_cast<TargetImageType*>(m_TargetConnector->GetOutput());
}

I don't need tue update image yet, i am only building the connection pipeline. Any other suggestions?

Best regards



Hi Gerald,

by "doesn't work", what do you mean ?

   1) It does not compile ?
   2) It compiles but seg. faults at run time ?
   3) It throws an exception at run time ?
   4) It returns a null pointer at run time ?


The design of your method is strange.


You probably should have done:

 m_TargetConnector= SourceConnectorType::New();

inside the constructor of your class,

and the setSourceImage() should only
have the  lines:

> void setSourceImage(vtkImageData* image) {
>        m_TargetConnector->SetInput(image);
> }


Why is that there is no call to the Update() method ?

You don't seem to have a line like:

            m_TargetConnector->Update();


   Please let us know,


        Thanks


             Luis



-----------------------------------------------------------------------------------
On Tue, Nov 17, 2009 at 10:26 AM, Lodron, Gerald <Gerald.Lodron at joanneum.at> wrote:
> Hello
>
> How can I make a smart pointer to my filter output, here my code:
>
> Class parameters (TargetImageType is a template parameter):
>
> typedef typename itk::VTKImageToImageFilter<TargetImageType> 
> TargetConnectorType;
>
> typename TargetImageType::Pointer m_TargetImage; typename 
> TargetConnectorType::Pointer m_TargetConnector;
>
> Function:
>
> void setSourceImage(vtkImageData* image) {
>        m_TargetConnector= SourceConnectorType::New();
>        m_TargetConnector->SetInput(image);
>        m_TargetImage= m_TargetConnector->GetOutput(); //does not work 
> }
>
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