[vtkusers] vtk Filter's new/delete

[chensiqi]

Hi, vtkers.
 
I have a question regarding pointer new and delete. Here is the code
 
main(){
....
 vtkPoints *LSPoints = vtkPoints::New(); fun ( LSV, &LSPoints );
 std::cout<< LSPoints->GetNumberOfPoints()<<std::endl;.......................................(1)
....
 LSPoints->Delete();
}
 
fun( vtkImage LSV, vtkPoints **pLSPoints )
{
 vtkContourFilter *LSFilter = vtkContourFilter::New(); LSFilter->SetInput( vtkLSV ); LSFilter->SetValue( 0, 0 );  LSFilter->Update();
 *pLSPoints = LSFilter->GetOutput()->GetPoints(); 
 std::cout<< (*pLSPoints)->GetNumberOfPoints()<<std::endl;.................................(2) LSFilter->Delete();
}
 
The output at position 2 is correct where as the output at position 1 is destroyed. 
If I comment "LSfilter->Delete()", then the output at both locations are correct.  But I think I need to release the memory of LSFilter here.
 
pls point out where I am wrong.
 
Thanks for any input.
Siqi
 
 
 

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