Re: [Yade-users] [Question #697142]: Writing new Ip2 functor / order of contact partners
Question #697142 on Yade changed: https://answers.launchpad.net/yade/+question/697142 Bettina Suhr confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- 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 : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #697142]: Writing new Ip2 functor / order of contact partners
Question #697142 on Yade changed: https://answers.launchpad.net/yade/+question/697142 Status: Answered => Solved Bettina Suhr confirmed that the question is solved: Thank you, Jan! The dynamic cast works really fine. The std::swap caused a compilation error, but it was easy to avoid the swap command, after knowing which pointer is which one. Best regards, Bettina -- 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 : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #697142]: Writing new Ip2 functor / order of contact partners
Question #697142 on Yade changed:
https://answers.launchpad.net/yade/+question/697142
Status: Open => Answered
Jan Stránský proposed the following answer:
Hello,
to test the specific instance, you can dynamic_cast the pointer and test
if the cast was successful or not, something like:
/
Ip2_FrictMat_myMaterial_myPhysics :: go(const shared_ptr& b1, const
shared_ptr& b2, const shared_ptr& interaction) {
MyMaterial myMatTest* = dynamic_cast(b2.get());
if (!myMatTest) { // b2 is not MyMaterial instance
std::swap(b1,b2);
}
/// now b1 is FrictMat and b2 is MyMaterial
...
}
/
A (non-Yade) illustration MWE:
// g++ test.cpp -o test && ./test
#include
#include
class Base { public: virtual ~Base(){} };
class Derived1 : public Base {};
class Derived2 : public Base {};
int main() {
std::shared_ptr b1(new Derived1());
std::shared_ptr b2(new Derived2());
//
Base* base1 = dynamic_cast(b1.get());
if (base1) std::cout << "base1 is Base\n";
else std::cout << "base1 is NOT Base\n";
//
Base* base2 = dynamic_cast(b2.get());
if (base2) std::cout << "base2 is Base\n";
else std::cout << "base2 is NOT Base\n";
//
Derived1* d11 = dynamic_cast(b1.get());
if (d11) std::cout << "b1 is Derived1\n";
else std::cout << "b1 is NOT Derived1\n";
//
Derived2* d21 = dynamic_cast(b1.get());
if (d21) std::cout << "b1 is Derived2\n";
else std::cout << "b1 is NOT Derived2\n";
//
//
Derived1* d12 = dynamic_cast(b2.get());
if (d12) std::cout << "b1 is Derived1\n";
else std::cout << "b1 is NOT Derived1\n";
//
Derived2* d22 = dynamic_cast(b2.get());
if (d22) std::cout << "b2 is Derived2\n";
else std::cout << "b2 is NOT Derived2\n";
return 0;
}
//
Cheers
Jan
--
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 : yade-users@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yade-users
More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #697142]: Writing new Ip2 functor / order of contact partners
Question #697142 on Yade changed: https://answers.launchpad.net/yade/+question/697142 Status: Answered => Open Bettina Suhr is still having a problem: Hi Vasileios, Thank you for the explanation, now I understand better why I have this problem. Your suggestion to use the DEFINE_FUNCTOR_ORDER_2D sounded like an elegant solution, unfortunately it doesn’t work. The behaviour remains unchanged, even when I put the DEFINE_FUNCTOR_ORDER_2D(FrictMat,myMaterial) command. Any other Idea how I could solve this problem? Can I check to which class b1, b2 are pointing? Best regards, Bettina -- 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 : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #697142]: Writing new Ip2 functor / order of contact partners
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 -- 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 : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
