yade-dev team mailing list archive

["Sergei D." <dorofeenko@xxxxxxxxx>]

>
> 1. I copied your algorithm from
> InteractingFacet2InteractingSphere4SpheresContactGeometry without
> understanding some parts of that. Could you please review the code
> briefly that it does what it should? In the test script, for example,
> when the sphere passes over the boundary of the facet, it seems that
> the contact exists longer than it visually should (but I didn't
> compare that with IF2IS4SCG; it's either bug in my re-"implementation"
> or in the original algo; I didn't want to write from scratch, sicne
> your approach seems to nicely avoid computing distances and uses only
> vector products, which should be much faster; or, if you have some
> description of the algo, can you pass me a reference?).
Kremmer, M. & Favier, J. F. A method for representing boundaries in
discrete element modelling~--- part I: Geometry and contact detection
Int. J. Numerical Methods in Eng., 2001, 51, 1407-1421