Re: GTC: visibility culling for scene graphs

[Sebastien Loisel <Sebastien.Loisel@Eng.Sun.COM>]

That's a good idea. GTC does this for certain things. Keeping in mind that the 
"scene graph" is flat for now; for example, gtc_sweep_kennel goes through the 
list of node and destroys the ones that need to be removed (as marked by the 
GTCKILLFLAG), gtc_animate_kennel traverses the list and does some animation 
stuff, gtc_display_kennel traverses the list and displays it. I am in the 
process of doing the network traverser right now (though I have a busy schedule 
so it may take a week before it's done).

I will change the naming scheme for scene graphs for the next version but the 
API will remain essentially the same. I will also make the "group" node 
(currently called "kennel") a gtcMetaGfx type.

> Don't know if GTC already have this concept, but
> we could implement this and other culling algorithms
> using custom graph travesers, like SGI's Performer.
> This would allow great modularity. 
> 
> We could have basic travesers (like update, frustrum_cull,
> visi_cull, render, network, etc) that would acept a 
> [root] node* as parameter and do the apropriate action 
> with the child graph.
> 
> This way we could have independent travesers and lot of
> space for user custom made travesers.
> 
> +-----------------------------------------------------------+
> |  Marcelo de Azevedo Wilbert Camelo  <camelo@led.ufsc.br>  |
> |                                                           |
> |    Laboratorio de Ensino a Distancia - Equipe Internet    |
> |    Programa de Pos-Graduacao em Engenharia de Producao    |
> | Universidade Federal de Santa Catarina - Florianopolis/SC |
> +-----------------------------------------------------------+
> 
> *************************************************************
> To unsubscribe, send an e-mail to majordomo@gtc.seul.org with
> unsubscribe gtc-dev       in the body. http://gtc.seul.org/

Sebastien Loisel -- McGill University -- Sun Microsystems
http://www.math.mcgill.ca/~loisel/

*************************************************************
To unsubscribe, send an e-mail to majordomo@gtc.seul.org with
unsubscribe gtc-dev       in the body. http://gtc.seul.org/