[ODE] Trimesh collision problem

[David Walters]

> maybe you find anything?

Hi, an off-the-cuff question is: have you tried reversing the winding
order of the triangle?  I think that trimeshes are actually only solid
in one direction (not sure why that decision was made tbh)

Everything else seems like it should work -- and certainly ray-mesh
collision does work well - but I've not tested single triangle meshes
before - hopefully that's not the issue.

Good luck,
Dave