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[Jan Stránský <question685054@xxxxxxxxxxxxxxxxxxxxx>]

Question #685054 on Yade changed:
https://answers.launchpad.net/yade/+question/685054

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Leonard,

see [1] (parts about collision detection) and change
###
                if O.interactions.has(i,j):
                    OverlapBalls.add(i)
###

to

###
                if O.interactions.has(i,j):
                    if O.interactions[i,j].isReal:
                        OverlapBalls.add(i)
###

In Yade, interactions are created by a collider, which creates interactions wherever there is a "potential of physical interactions", i.e. when bounding boxes overlap (the approximate collision detection phase).
It is then a work of Ig2/Law2 to do exact contact detection, "marking" the interaction as real if there is a "physical overlap" or not.

cheers
Jan

[1] https://yade-dem.org/doc/formulation.html

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