[ODE] Ray - Convex collider submission

[David Walters]

Posting to say that i've written a Ray - Convex collider which i've
tested using the heightfield submission from yesterday.

You can find both the Tortoise SVN generated .patch file, and the core
collider function in a zip file on my hastily created webpage:

http://hidden.asbestos.googlepages.com/


note: An implementation of dGeomConvexPointDepth would be necessary
for a more efficient terrain collision, but you can hack-enable it by
uncommening the #define DO_RAYDEPTH half way down the file


Regards,
Dave