yade-dev team mailing list archive

[Janek Kozicki <janek_listy@xxxxx>]

Václav Šmilauer said:     (by the date of Fri, 25 Sep 2009 17:34:58 +0200)

> Multiple contacts beween one pair of bodies are not possible in yade; 
> adding it would be far-reaching and will not (as I see it) happen.

A simple hack to allow 4 contacts is shown in TetrahedronsTest example. We can use the same hack here, and it should work.

> Hm... then why not using gts for the polyhedra intersections instead of 
> simple (therefore probably inefficient) algorithms? Currently you can 
> create arbitrary meshed surface by clumping the facets in one body 
> (which has collision detection per-facet, but moves as rigid whole). 
> What you don't get is mutual interactions of these two meshed surfaces 
> -- maybe that is what spoly3d can be good for; however, that would mean 
> bunch of work to define poly-poly, poly-sphere, poly-facet interactions.

But he has already done spheropolyhedrons, and it works. I haven't
meet anybody who would want to implement the same thing in an
unfamiliar way, when he already has this thing working.

I think that adding spheropolyhedrons will be an interesting thing
too. It's a bit different than facets, will allow doing some
comparisons, etc.


-- 
Janek Kozicki                                                         |