[vtkusers] SetLineWidth problem

[adrien marion]

Hi everybody,
I ha ve a problem with the function in object .

This is ok :
               	vtkActor *actorCo=(vtkActor*) 
collCo->GetItemAsObject(index+2);
		vtkActor *actorAx=(vtkActor*) collAx->GetItemAsObject(index+2);
		vtkActor *actorSa=(vtkActor*) collSa->GetItemAsObject(index+2);
        
	actorCo->GetProperty()->SetLineWidth(_pContour2D[index].GetWidth());
		actorAx->GetProperty()->SetLineWidth(_pContour2D[index].GetWidth());
		actorSa->GetProperty()->SetLineWidth(_pContour2D[index].GetWidth());
but that isn't:
               	vtkActor *actor=(vtkActor*) coll->GetItemAsObject(index+2);
       	actor->GetProperty()->SetLineWidth(_pContour2D[index].GetWidth());

Can somebody explain me? I don't understand why?
Than you
Adrien

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