[vtk-developers] passing data unchanged through a filter

[John Platt]

Hi all,

 

Is there a preferred method of passing a dataset through a filter with
no changes? I have seen

 

    output->ShallowCopy( input );

 

and

 

    output->CopyStructure( input );

    output->GetPointData()->PassData(input->GetPointData());

    output->GetCellData()->PassData(input->GetCellData());

 

Any enlightenment would be welcome.

 

John

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