Question #690280 on Yade changed: https://answers.launchpad.net/yade/+question/690280
Jan Stránský proposed the following answer: Hello, for next time, I suggest to open separate question for each problem. It would left the conversation clean and also (therefore) could be useful for future readers. for implementing a new law in C++, you do not need any high level of C++ knowledge, but obviously you need to know the syntax and basic structures (shared_ptr, static_cast). Basically you can copy-paste all the Frict* code, changing "Frict" to a different suitable name, e.g. SurfTenson, so FrictMat -> SurfTensionMat etc. If it works, then you can start to modify the logic inside. > CREATE_LOGGER you do not need loggers (at least for the beginning) > can you explain all this please be more specific what is "all this" > <<shared_ptr>> ?? [1] > int id1 = contact->getId1(), id2 = contact->getId2(); > getId1?? getId2 ?? this should be self-explanatory, or? id1 is id1 of the contact, id2 is id2 of the contact > FrictPhys* phys = static_cast<FrictPhys*>(ip.get());" > Can you comment about these statements ? static_cast ?? ig.get, ip.get() ?? ip is of type shared_ptr<FrictPhys> ip.get() returns ordinary pointer from the shared pointer static_cast casts it to the type FrictMat (in case it is a derived class), static **here** means it is performed at compile time > what is LawFunctor ?? it is the base class of specific Law2 subclasses > what does this mean ? again, please be more specific > what is YADE_CLASS_BASE_DOC_ATTRS_CTOR_PY ?? a macro [2] > FUNCTOR2D ?? it tells Yade that this class (Law2_ScGeom_FrictPhys_CundallStrack in this case) deals with the combination of ScGeom and FrictPhys cheers Jan [1] https://yade-dem.org/doc/prog.html#shared-pointers [2] https://yade-dem.org/doc/prog.html#yade-class-base-doc-macro-family -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
