a_fcriteria_coulomb.h

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/*
Copyright 2016 Pierre SMARS (smars@yuntech.edu.tw)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _A_FCRITERIA_COULOMB_H_
#define _A_FCRITERIA_COULOMB_H_
 
#include "a_fcriteria_in.h"
 
class a_fcriteria_coulomb : public a_fcriteria_in
{
public:
        a_fcriteria_coulomb(): f_(0.5), c_(0.) {}
        static const std::string help();
        virtual bool ok(const a_face * f) const;
        virtual double penalty(const a_face * f) const;
        void f(double v) {if (v>=0) f_ = v;}
        double f() const {return f_;}
        void c(double v) {if (v>=0.) c_=v;}
        double c() const {return c_;}
protected:
        double f_;
        double c_;
};
 
#endif