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[Vasileios Angelidakis <question697142@xxxxxxxxxxxxxxxxxxxxx>]

Question #697142 on Yade changed:
https://answers.launchpad.net/yade/+question/697142

    Status: Open => Answered

Vasileios Angelidakis proposed the following answer:
Hi Bettina,

The order of contact partners is determined inside the Ig2 functors
using:

FUNCTOR2D(Shape1,Shape2);
DEFINE_FUNCTOR_ORDER_2D(Shape1,Shape2);

as in [1]. Your example also shows the same behaviour.

Currently this DEFINE_FUNCTOR_ORDER_2D is not used in any other Ip2
functors, but it could be worthwhile trying:
DEFINE_FUNCTOR_ORDER_2D(FrictMat,myMaterial) when defining your
Ip2_FrictMat_myMaterial_myPhysics class in its header file. More info on
DEFINE_FUNCTOR_ORDER_2D in [2,3].

Hope this helps,

Vasileios

[1] https://gitlab.com/yade-dev/trunk/-/blob/master/pkg/dem/Ig2_Facet_Sphere_ScGeom.hpp#L43-44
[2] https://gitlab.com/yade-dev/trunk/-/blob/master/lib/multimethods/FunctorWrapper.hpp
[3] https://gitlab.com/yade-dev/trunk/-/blob/master/lib/multimethods/DynLibDispatcher.hpp

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