[vtkusers] Should I use one actor per renderer/renderwindow or can they share the same actor?

[Bryn Lloyd]

Hi again,

 

Actually, could I copy an actor using ShallowCopy in order to create
separate actors for each renderer?

 

Else, how can I transfer (or even synchronize) the actor parameters in a
simple but complete way? I am thinking of general vtkProp(s), not just
vtkActor.

 

Thanks for any advice.

 

--

Bryn

 

 

 

 

 

 

 

 

From: Karthik Krishnan [mailto:karthik.krishnan at kitware.com] 
Sent: Tuesday, November 01, 2011 3:58 PM
To: Bryn Lloyd
Cc: vtk
Subject: Re: [vtkusers] Should I use one actor per renderer/renderwindow or
can they share the same actor?

 

Even if it did work, it'd be quite fragile. I can imagine timestamp checks
going wrong (these are used in the mapper to rebuild the geometric
primitives etc). 

 

I can see LODActors getting messed up, when computing last render time from
a renderer, not realizing that its not the same renderer they rendered on
previously. 

 

Its best to create an actor per render window.

 

--

karthik

On Tue, Nov 1, 2011 at 4:24 PM, Bryn Lloyd <lloyd at itis.ethz.ch> wrote:

Hi

 

I am working on an application with multiple render windows.

 

Is it SAFE to use the same actor for each renderer/window, or should I
create an actor per renderer?

 

BTW. Currently it is OK if I have the same parameters (color, visibility,
etc) in each renderer.

Thanks for any suggestions

 

Bryn

 


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