[vtkusers] Difference between vtkSmartPointer assignment operator and ShallowCopy

[Berti Krüger]

Hello.

I (hopefully) already understand the difference between the ShallowCopy and the DeepCopy method (e.g. copying only the pointer vs. copying the pointer and the content pointed to).

But what i don't understand yet is, what is the difference between using the overloaded assignment operator of vtkSmartPointer and the ShallowCopy method, e.g. what is the difference between


vtkSmartPointer<vtkPolydata> myStrangePolydata = vtkSmartPointer<vtkPolydata>::New();


myStrangePolydata = vtkTransmogrifyFilter->GetOutput();


and


myStangePolydata->ShallowCopy(vtkTransmogrifyFilter->GetOutput();



Does it make a difference to the reference count of the vtkSmartPointer?


Thank you very much in advance.


Cheers,
Berti
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