[ODE] Difference in efficiency between single trimesh geom andmultiple trimesh geoms?

[John Miles]

I'd be amazed if consolidating separate geoms into one big representation
actually improves performance.  It's much better to keep objects separate
and aggressively disable the ones that aren't candidates for collisions
(potentially even removing them from the space).

dSpaceAdd() and dSpaceRemove() are pretty fast in my experience.  They are
your first, best optimization.

-- jm

> -----Original Message-----
> From: ode-bounces at q12.org [mailto:ode-bounces at q12.org]On Behalf Of Megan
> Fox
> Sent: Sunday, February 20, 2005 11:01 AM
> To: ode at q12.org
> Subject: [ODE] Difference in efficiency between single trimesh geom
> andmultiple trimesh geoms?
>
>
> Has anyone done any testing on this, where they started with a world
> full of one trimesh geom per "world chunk entity" (a flight of stairs,
> a door, a piece of wall, a table, etc), then later moved to a
> representation where everything was merged into a single trimesh geom?
>
> As it stands, each chunk in my world is defined via solid geoms, with
> said geoms associated with the proper entity - "wall", "wall corner",
> "floor", "stairs", etc.  Moving to trimesh representation of
> everything (in prep for terrain), I imagine I'll keep it the same,
> with one trimesh geom per.  I'm just curious how much of a speed
> increase I'm likely to see in moving from this to a single-geom
> representation of the world, said figure serving as a motivator for
> changing things in that direction.
>
> -Megan Fox
>