[ODE] A trimesh-as-view-frustum question

[John Miles]

> Well, that makes sense!
>
> I'll have to give it a shot and check to see if the overhead of
> calculating this is countered by the speedup of not drawing invisibles.
>
> Anyway, I'd still like to know if opcode will detect if an object is
> entirely inside, and not intersecting edges.

An object completely inside a TriMesh will be allowed to exist undisturbed
by the collision system, until it penetrates a face's back side.  Then it
will be launched into orbit around Altair 4.

-- jm