Actually... I'm kind of wondering if collision detection of the robustness of the _tdmt approach is even necessary for this sort of approach.  The C++ example simply uses distances from objects.  His approach is far to simple and not really useful for Poser, but I wonder if the basic idea may still hols.  That is, for both self-collisions and other-collisions, with cloth or something like this, we don't really need the exact point of collision, or perhaps we don't even need to identify a specific collision poly or tri.  I don't know.  Could one simply use distances from all the poly or tri planes somehow, reacting if a vert comes within a certain distance of something?  Hmm.

But I guess the plane is infinite, so one might need to break that down into the area of the tri or poly, so....

Hmm.  Umm.  Where's my 3D math book....  Need a refresher....

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.