[vtkusers] updating an actor

[Giancarlo Amati]

Hello VTkers,

let's say that I have this function


vtkRenderer *renderer = vtkRenderer::New();

void createScene(...) {

vtkActor *act = vtkActor::New();

renderer->AddActor();

}

I have the need of update an actor associated to a particular element of the scene. 
The AddRenderer() adds the actor in the pipeline which I believe is an overall innner VTK datastructure. 

So, I know that the GetActors() in the renderer returns the vtkActorsCollection. 
If I want to change/update something in a pre-allocated actor shall I save the variable act and the nperform a research in that collection returned by GetActors()? 

But saving the variable *act in a global data structure wouldn't it mean duplicating information (and so more memory usage) about that actor? and If I modify *act, am I actually modifing the same in the pipeline?

Thanks  a lot for  any advice you can give me!.

Giancarlo
 		 	   		  
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