[ODE] Heightfield class movement problem

[Tristan McMillan]

Hi Jon

What I've done is created a geometry and drawn it using the
dsDrawTriangle function as in the example. I've then moved the geom to a
new position using dGeomSetPosition. Then I've redrawn the geom at this
position using the dsDrawTriangle  function. However when I try and
collide objects with this geom they pass right through it.So I'm not
sure why the collision isn't working.

Thanks
Tristan