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/////////////////////////////////////////////////////////////
// //
// Copyright (c) 2003-2014 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 __ELASTICINTERACTION_H
#define __ELASTICINTERACTION_H
#include "Model/IGParam.h"
#include "Model/Interaction.h"
#include "Model/Particle.h"
/*!
\brief Interaction group parameters for CElasticInteractionGroups
*/
class CElasticIGP : public AIGParam
{
protected:
public:
double m_k;
bool m_scaling;
CElasticIGP();
CElasticIGP(const std::string&,double,bool scaling=true);
virtual void packInto(CVarMPIBuffer*) const;
void setSpringConst(double k){m_k=k;};
double getSpringConst() const{return m_k;};
virtual std::string getTypeString() const {return "Elastic";}
friend ostream& operator<<(ostream&,const CElasticIGP&);
};
/*!
\class CElasticInteraction
\brief Elastic Interaction between free particles
\author Steffen Abe
$Revision$
$Date$
*/
class CElasticInteraction : public APairInteraction
{
public:
typedef double (CElasticInteraction::* ScalarFieldFunction)() const;
typedef pair<bool,double> (CElasticInteraction::* CheckedScalarFieldFunction)() const;
typedef Vec3 (CElasticInteraction::* VectorFieldFunction)() const;
static ScalarFieldFunction getScalarFieldFunction(const string&);
static CheckedScalarFieldFunction getCheckedScalarFieldFunction(const string&);
static VectorFieldFunction getVectorFieldFunction(const string&);
private:
double m_k; //!< spring constant
Vec3 m_force; //!< caching force for E_pot
Vec3 m_cpos;
bool m_scaling; //!< toggles scaling of elastic properties by particle size
public:
typedef CElasticIGP ParameterType;
CElasticInteraction(CParticle*,CParticle*,const CElasticIGP&);
virtual ~CElasticInteraction(){};
virtual Vec3 getPos() const {return m_cpos;};
double getPotentialEnergy() const;
virtual void calcForces();
Vec3 getForce() const;
friend ostream& operator<<(ostream&,const CElasticInteraction&);
// save/load of restart parameters
virtual void saveRestartData(std::ostream &oStream);
virtual void loadRestartData(std::istream &iStream);
};
#endif //__ELASTICINTERACTION_H
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