[vtkusers] How to visualize thousands of actors with good performance

[Affolter Martin]

Pascal,

thanks for sharing your experience. I've been told that combining polydata and creating a single pipeline with one mapper and one actor would speed things up dramatically. That makes sense, unfortunately it is not an option for us. We want to be able to pick each actor separately and change its color and transparency. I'm afraid this will not be possible with just one actor...?

Martin Affolter 

Von: Pascal Augustin [mailto:pascal at rogue-research.com] 
Gesendet: Montag, 27. September 2010 21:00
An: Bill Lorensen
Cc: Affolter Martin; vtkusers at vtk.org
Betreff: Re: [vtkusers] How to visualize thousands of actors with good performance


Try this:

For your mappers,
mapper->Update();
mapper->StaticOn();

Is there any improvement?

Hi, 

I have a similar problem and unfortunately, this didn't really help. 

In my case, I have a few thousand objects that I need to render at the same time. 

At first, I had to lower their resolution to make the rendering faster. This made a big difference. Of course, this was not an ideal solution since I had to modify the objects.

Secondly, I decided to group all those objects into a single actor. This made the biggest performance boost. I could now smoothly rotate the scene and do all kinds of things that I couldn't even dream of doing before. 

But in the case where I would really need 10000s of actors, what else could I try? I understand that it will never be as fast as having a single actor.

Thanks

Pascal