[ODE] Can i access each geom of a space?

[Chavent Paul]

Can i access each geom of a space? Yes, it seams possible.
But i need to do :
   dGeomGroupGetNumGeoms()
   dGeomGroupGetGeom()

i wonder if it couldn't be fastest to access geoms with the "first" 
pointer that is in the "space" structure. Unfortunately, the structure 
isn't declared in the includes.
Is there someone that can say to me if my idea is wrong and/or if there 
is a solution to access "geoms" without having to do a geomgroup 
containing all my scene ?