[vtkusers] Removing Actors

[Amy Squillacote]

Please keep the discussion on the vtkusers list rather than emailing me 
directly. That way other people can contribute to the conversation, and 
the discussion is archived.

By "re-rendering", I mean calling Render() on your vtkRenderWindow. (I'm 
guessing that VTK3 in the code segment you sent is a vtkRenderWindow.)

- Amy

Renato Cesar Pompeu wrote:
> Do you mean VTK3->GetRenderer() ?
>  
> I've tried:
>  
> ...
> if  (tbnCubo->Down) {
>     VTK3->GetRenderer()->AddActor(cubo1);
> }
> else {
>     VTK3->GetRenderer()->RemoveActor(cubo1);
>     VTK3->GetRenderer()->RemoveViewProp(cubo1);
>     VTK3->GetRenderer()->Clear();
>     VTK3->GetRenderer();
>   }
>  
> cubo->Delete();
> cuboMapper->Delete();
> cubo1->Delete();
> VTK3->Invalidate();
>  
>  
> but the actor doesn't disappear from the scene when the button is up.
> If I put :
>  
> VTK3->GetRenderer()->RemoveAllViewProps();
>
> then all the actors disappear from the scene.
>  
>  
>
> > Date: Mon, 5 May 2008 09:33:33 -0500
> > From: ahs at cfdrc.com
> > To: w_e_b_m_a_s_t_e_r_6_9 at hotmail.com
> > CC: rcpompeu at hotmail.com; vtkusers at public.kitware.com
> > Subject: Re: [vtkusers] Removing Actors
> >
> > Did you try re-rendering after you removed the actor?
> > - Amy
> >
> > Cameron Burnett wrote:
> > > Is the program actually entering the 'else' section?? Maybe
> > > tbnIniciar->Down is always true? If you're not sure then throw in a
> > > print statement to see if anything prints in that section.
> > >
> > > The RemoveActor function is the correct one to use. I am using 
> that in
> > > the program that I'm working on at the moment.
> > >
> > > If that is not the problem, then it could be that something is still
> > > using the actor that you're trying to remove. That can be a problem
> > > when using the Delete function to remove it from memory, however I'm
> > > not sure if it can be a problem for RemoveActor as well.
> > >
> > > Hope that helps a bit,
> > > Cameron.
> > >
> > >
> > >
> > > 
> ------------------------------------------------------------------------
> > > From: rcpompeu at hotmail.com
> > > To: vtkusers at public.kitware.com
> > > Date: Mon, 5 May 2008 13:45:11 +0000
> > > Subject: [vtkusers] Removing Actors
> > >
> > > Hello All,
> > >
> > > How do I remove an individual actor from the scene? My code does
> > > not work. Someone help me? Thanks.
> > >
> > > if (tbnIniciar->Down) {
> > > VTK3->GetRenderer()->AddActor(outlineActor);
> > > }
> > >
> > > else {
> > > VTK3->GetRenderer()->RemoveActor(outlineActor);
> > > VTK3->GetRenderer()->RemoveViewProp(outlineActor);
> > > VTK3->GetRenderer()->Clear();
> > > }
> > >
> > > VTK3->Invalidate();
> > >
> > >
> > > 
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> > --
> > Amy Squillacote Phone: (256) 726-4839
> > Computer Scientist Fax: (256) 726-4806
> > CFD Research Corporation Web: http://www.cfdrc.com
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> > Huntsville, AL 35805
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-- 
Amy Squillacote                    Phone: (256) 726-4839
Computer Scientist                 Fax: (256) 726-4806
CFD Research Corporation           Web: http://www.cfdrc.com
215 Wynn Drive, Suite 501
Huntsville, AL  35805