[vtkusers] deleting a polydata from my RenderWindow, is it possible!!!

[Tasnim]

thaaanks again :) . But i didn't find how to update the input of my actor in
order to put in it an other polydata instead of the previous data , i don't
like to delete it, i think that  it will be better to update my actor to the
new polydata instead of deleting it.
I tried like this:

 *actor->GetMapper()->SetInputConnection(reader1->GetOutputPort());
  actor->GetMapper()->Modified();
  actor->GetMapper()->Update();
  actor->Modified();*

but, this allows me to update an actor just one time !!!!

Any suggestion !!

Regards,
Tasnim




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