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

[Pascal Augustin]

> 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
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