Question #700022 on Yade changed:
https://answers.launchpad.net/yade/+question/700022
Status: Open => Answered
Jan Stránský proposed the following answer:
Hello,
please link the source as a link to our gitlab repository, like [1].
shearForce is not updated the same way as normalForce (from code point of
view), becase shearForce is at [2] declared as a reference (see e.g. [3] on the
topic what c++ reference is or google "c++ pointer reference" or something like
that).
So shearForce here is alias / is equivalent to phys->shearForce. It is modified
"in place".
Therefore every time shearForce is "computed", phys->shearForce is actually
updated in place.
Cheers
Jan
[1]
https://gitlab.com/yade-dev/trunk/-/blob/master/pkg/dem/ElasticContactLaw.cpp#L70
[2]
https://gitlab.com/yade-dev/trunk/-/blob/master/pkg/dem/ElasticContactLaw.cpp#L72
[3] https://www.geeksforgeeks.org/pointers-vs-references-cpp/
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