LinearDashpotInteraction.h

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//                                                         //
// Copyright (c) 2003-2017 by The University of Queensland //
// Centre for Geoscience Computing                         //
// http://earth.uq.edu.au/centre-geoscience-computing      //
//                                                         //
// Primary Business: Brisbane, Queensland, Australia       //
// Licensed under the Open Software License version 3.0    //
// http://www.apache.org/licenses/LICENSE-2.0              //
//                                                         //
 
#ifndef __LINEARDASHPOTINTERACTION_H
#define __LINEARDASHPOTINTERACTION_H
 
#include "Model/IGParam.h"
#include "Model/Interaction.h"
#include "Model/Particle.h"
 
 
class CLinearDashpotIGP : public AIGParam
{
public:
  double m_damp;
  double m_cutoff;
 
  CLinearDashpotIGP();
  CLinearDashpotIGP(const std::string&,double,double);
  
  virtual std::string getTypeString() const {return "LinearDashpot";}
};
 
class CLinearDashpotInteraction : public APairInteraction
{
public:
 
  typedef double (CLinearDashpotInteraction::* ScalarFieldFunction)() const;
  typedef Vec3 (CLinearDashpotInteraction::* VectorFieldFunction)() const;
  typedef pair<bool,double> (CLinearDashpotInteraction::* CheckedScalarFieldFunction)() const;
 
  static ScalarFieldFunction getScalarFieldFunction(const string&);
  static VectorFieldFunction getVectorFieldFunction(const string&);
  static CheckedScalarFieldFunction getCheckedScalarFieldFunction(const string&);
 
private:
  double m_damp;
  double m_cutoff; 
  double m_cross_section; 
  Vec3   m_force; // caching force for E_pot
  Vec3   m_cpos; // center position
 
public:
  typedef CLinearDashpotIGP ParameterType;
 
  CLinearDashpotInteraction(CParticle*,CParticle*,const CLinearDashpotIGP&);
  virtual ~CLinearDashpotInteraction(){};
 
  virtual Vec3 getPos() const {return m_cpos;};
  double getPotentialEnergy() const;
 
  virtual void calcForces();
  Vec3 getForce() const;
};
#endif //__HERTZIANELASTICINTERACTION_H