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#ifndef _INTEGRATOR_H_ |
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#define _INTEGRATOR_H_ |
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#include <string> |
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#include <vector> |
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#include "Atom.hpp" |
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#include "Molecule.hpp" |
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#include "SRI.hpp" |
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#include "AbstractClasses.hpp" |
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#include "SimInfo.hpp" |
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#include "ForceFields.hpp" |
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#include "ExtendedSystem.hpp" |
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#include "Thermo.hpp" |
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#include "ReadWrite.hpp" |
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#include "ZConsWriter.hpp" |
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class Verlet : public Integrator { |
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using namespace std; |
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const double kB = 8.31451e-7;// boltzmann constant amu*Ang^2*fs^-2/K |
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const double eConvert = 4.184e-4; // converts kcal/mol -> amu*A^2/fs^2 |
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const double p_convert = 1.63882576e8; //converts amu*fs^-2*Ang^-1 -> atm |
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const int maxIteration = 300; |
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const double tol = 1.0e-6; |
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template<typename T = BaseIntegrator> class Integrator : public T { |
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public: |
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Verlet( SimInfo &info, ForceFields* the_ff, ExtendedSystem* the_es ); |
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~Verlet(); |
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Integrator( SimInfo *theInfo, ForceFields* the_ff ); |
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virtual ~Integrator(); |
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void integrate( void ); |
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private: |
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protected: |
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void move_a( double dt ); |
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void move_b( double dt ); |
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virtual void integrateStep( int calcPot, int calcStress ); |
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virtual void preMove( void ); |
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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virtual void constrainA( void ); |
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virtual void constrainB( void ); |
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virtual int readyCheck( void ) { return 1; } |
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virtual void resetIntegrator( void ) { } |
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virtual void calcForce( int calcPot, int calcStress ); |
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virtual void thermalize(); |
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void checkConstraints( void ); |
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void rotate( int axes1, int axes2, double angle, double j[3], |
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double A[3][3] ); |
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|
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ForceFields* myFF; |
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ExtendedSystem* myES; |
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SimInfo *entry_plug; // all the info we'll ever need |
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int c_natoms; /* the number of atoms */ |
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Atom **c_atoms; /* array of atom pointers */ |
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SimInfo *info; // all the info we'll ever need |
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int nAtoms; /* the number of atoms */ |
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int oldAtoms; |
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Atom **atoms; /* array of atom pointers */ |
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Molecule* molecules; |
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int nMols; |
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int c_is_constrained; /*boolean to know whether the systems contains |
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constraints. */ |
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int c_n_constrained; /*counter for number of constraints */ |
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int *c_constrained_i; /* the i of a constraint pair */ |
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int *c_constrained_j; /* the j of a constraint pair */ |
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double *c_constrained_dsqr; /* the square of the constraint distance */ |
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double *c_mass; /* the array of masses */ |
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short is_first; /*boolean for the first time integrate is called */ |
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double c_box_x; |
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double c_box_y; |
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double c_box_z; |
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}; |
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int isConstrained; // boolean to know whether the systems contains |
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// constraints. |
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int nConstrained; // counter for number of constraints |
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int *constrainedA; // the i of a constraint pair |
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int *constrainedB; // the j of a constraint pair |
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double *constrainedDsqr; // the square of the constraint distance |
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|
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int* moving; // tells whether we are moving atom i |
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int* moved; // tells whether we have moved atom i |
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double* oldPos; // pre constrained positions |
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class Symplectic : public Integrator { |
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short isFirst; /*boolean for the first time integrate is called */ |
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double dt; |
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double dt2; |
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Thermo *tStats; |
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StatWriter* statOut; |
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DumpWriter* dumpOut; |
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}; |
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typedef Integrator<BaseIntegrator> RealIntegrator; |
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template<typename T> class NVE : public T { |
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public: |
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Symplectic( SimInfo* the_entry_plug, |
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ForceFields* the_ff, |
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ExtendedSystem* the_es); |
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~Symplectic(); |
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NVE ( SimInfo *theInfo, ForceFields* the_ff ): |
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T( theInfo, the_ff ){} |
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virtual ~NVE(){} |
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}; |
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template<typename T> class NVT : public T { |
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public: |
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NVT ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NVT() {} |
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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protected: |
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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virtual int readyCheck(); |
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virtual void resetIntegrator( void ); |
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// chi is a propagated degree of freedom. |
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double chi; |
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// targetTemp must be set. tauThermostat must also be set; |
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double targetTemp; |
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double tauThermostat; |
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void integrate( void ); |
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short int have_tau_thermostat, have_target_temp; |
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private: |
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}; |
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void rotate( int axes1, int axes2, double angle, double j[3], |
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double A[3][3] ); |
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SimInfo* entry_plug; |
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ForceFields* myFF; |
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ExtendedSystem* myES; |
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Molecule* molecules; |
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int nMols; |
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template<typename T> class NPTi : public T{ |
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int is_constrained; /*boolean to know whether the systems contains |
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constraints. */ |
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int n_constrained; /*counter for number of constraints */ |
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int *constrained_i; /* the i of a constraint pair */ |
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int *constrained_j; /* the j of a constraint pair */ |
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double *constrained_dsqr; /* the square of the constraint distance */ |
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double *mass; /* the array of masses */ |
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public: |
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short int isFirst; |
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NPTi ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTi() {}; |
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SRI **srInteractions; /* array of SRI pointers */ |
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int nSRI; /* the number of short range interactions */ |
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virtual void integrateStep( int calcPot, int calcStress ){ |
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calcStress = 1; |
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T::integrateStep( calcPot, calcStress ); |
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} |
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|
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
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|
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protected: |
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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virtual int readyCheck(); |
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virtual void resetIntegrator( void ); |
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|
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// chi and eta are the propagated degrees of freedom |
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|
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double chi; |
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double eta; |
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double NkBT; |
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|
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// targetTemp, targetPressure, and tauBarostat must be set. |
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// One of qmass or tauThermostat must be set; |
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|
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double targetTemp; |
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double targetPressure; |
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double tauThermostat; |
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double tauBarostat; |
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|
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short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
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short int have_target_pressure; |
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|
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}; |
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template<typename T> class NPTim : public T{ |
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public: |
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NPTim ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTim() {}; |
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|
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virtual void integrateStep( int calcPot, int calcStress ){ |
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calcStress = 1; |
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T::integrateStep( calcPot, calcStress ); |
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} |
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
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protected: |
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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virtual int readyCheck(); |
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virtual void resetIntegrator( void ); |
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|
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Molecule* myMolecules; |
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Atom** myAtoms; |
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|
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// chi and eta are the propagated degrees of freedom |
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|
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double chi; |
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double eta; |
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double NkBT; |
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|
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// targetTemp, targetPressure, and tauBarostat must be set. |
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// One of qmass or tauThermostat must be set; |
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|
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double targetTemp; |
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double targetPressure; |
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double tauThermostat; |
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double tauBarostat; |
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|
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short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
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short int have_target_pressure; |
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|
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}; |
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template<typename T> class NPTzm : public T{ |
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|
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public: |
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NPTzm ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTzm() {}; |
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|
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virtual void integrateStep( int calcPot, int calcStress ){ |
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calcStress = 1; |
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T::integrateStep( calcPot, calcStress ); |
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} |
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|
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
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|
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protected: |
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|
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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|
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virtual int readyCheck(); |
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|
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virtual void resetIntegrator( void ); |
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|
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Molecule* myMolecules; |
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Atom** myAtoms; |
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|
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// chi and eta are the propagated degrees of freedom |
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|
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double chi; |
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double eta; |
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double etaZ; |
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double NkBT; |
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|
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// targetTemp, targetPressure, and tauBarostat must be set. |
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// One of qmass or tauThermostat must be set; |
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|
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double targetTemp; |
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double targetPressure; |
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double tauThermostat; |
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double tauBarostat; |
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|
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short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
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short int have_target_pressure; |
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|
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}; |
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template<typename T> class NPTf : public T{ |
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public: |
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|
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NPTf ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTf() {}; |
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|
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virtual void integrateStep( int calcPot, int calcStress ){ |
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calcStress = 1; |
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T::integrateStep( calcPot, calcStress ); |
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} |
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|
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
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protected: |
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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|
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virtual void resetIntegrator( void ); |
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|
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virtual int readyCheck(); |
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|
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// chi and eta are the propagated degrees of freedom |
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|
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double chi; |
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double eta[3][3]; |
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double NkBT; |
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|
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// targetTemp, targetPressure, and tauBarostat must be set. |
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// One of qmass or tauThermostat must be set; |
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|
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double targetTemp; |
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double targetPressure; |
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double tauThermostat; |
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double tauBarostat; |
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|
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short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
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short int have_target_pressure; |
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|
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}; |
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|
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template<typename T> class NPTxym : public T{ |
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public: |
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|
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NPTxym ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTxym() {}; |
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|
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virtual void integrateStep( int calcPot, int calcStress ){ |
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calcStress = 1; |
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T::integrateStep( calcPot, calcStress ); |
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} |
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|
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
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|
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protected: |
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|
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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|
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virtual int readyCheck(); |
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|
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virtual void resetIntegrator( void ); |
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|
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Molecule* myMolecules; |
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Atom** myAtoms; |
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|
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// chi and eta are the propagated degrees of freedom |
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|
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double chi; |
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double eta; |
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double etaX; |
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double etaY; |
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double NkBT; |
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|
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// targetTemp, targetPressure, and tauBarostat must be set. |
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// One of qmass or tauThermostat must be set; |
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|
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double targetTemp; |
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double targetPressure; |
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double tauThermostat; |
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double tauBarostat; |
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|
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short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
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short int have_target_pressure; |
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|
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}; |
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|
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|
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template<typename T> class NPTfm : public T{ |
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|
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public: |
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NPTfm ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTfm() {}; |
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|
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virtual void integrateStep( int calcPot, int calcStress ){ |
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calcStress = 1; |
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T::integrateStep( calcPot, calcStress ); |
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} |
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|
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void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
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void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
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void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
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void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
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|
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protected: |
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|
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virtual void moveA( void ); |
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virtual void moveB( void ); |
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|
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virtual void resetIntegrator( void ); |
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|
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virtual int readyCheck(); |
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|
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Molecule* myMolecules; |
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Atom** myAtoms; |
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|
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// chi and eta are the propagated degrees of freedom |
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|
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double chi; |
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double eta[3][3]; |
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double NkBT; |
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|
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// targetTemp, targetPressure, and tauBarostat must be set. |
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// One of qmass or tauThermostat must be set; |
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|
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double targetTemp; |
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double targetPressure; |
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double tauThermostat; |
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double tauBarostat; |
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|
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short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
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> |
short int have_target_pressure; |
410 |
> |
|
411 |
> |
}; |
412 |
> |
|
413 |
> |
|
414 |
> |
template<typename T> class NPTpr : public T{ |
415 |
> |
|
416 |
> |
public: |
417 |
> |
|
418 |
> |
NPTpr ( SimInfo *theInfo, ForceFields* the_ff); |
419 |
> |
virtual ~NPTpr() {}; |
420 |
> |
|
421 |
> |
virtual void integrateStep( int calcPot, int calcStress ){ |
422 |
> |
calcStress = 1; |
423 |
> |
T::integrateStep( calcPot, calcStress ); |
424 |
> |
} |
425 |
> |
|
426 |
> |
void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;} |
427 |
> |
void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;} |
428 |
> |
void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;} |
429 |
> |
void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;} |
430 |
> |
|
431 |
> |
protected: |
432 |
> |
|
433 |
> |
virtual void moveA( void ); |
434 |
> |
virtual void moveB( void ); |
435 |
> |
|
436 |
> |
virtual int readyCheck(); |
437 |
> |
|
438 |
> |
virtual void resetIntegrator( void ); |
439 |
> |
|
440 |
> |
// chi and eta are the propagated degrees of freedom |
441 |
> |
|
442 |
> |
double chi; |
443 |
> |
double eta[3][3]; |
444 |
> |
double NkBT; |
445 |
> |
|
446 |
> |
// targetTemp, targetPressure, and tauBarostat must be set. |
447 |
> |
// One of qmass or tauThermostat must be set; |
448 |
> |
|
449 |
> |
double targetTemp; |
450 |
> |
double targetPressure; |
451 |
> |
double tauThermostat; |
452 |
> |
double tauBarostat; |
453 |
> |
|
454 |
> |
short int have_tau_thermostat, have_tau_barostat, have_target_temp; |
455 |
> |
short int have_target_pressure; |
456 |
> |
|
457 |
> |
}; |
458 |
> |
|
459 |
> |
|
460 |
> |
template<typename T> class ZConstraint : public T { |
461 |
|
|
462 |
+ |
public: |
463 |
+ |
class ForceSubtractionPolicy{ |
464 |
+ |
public: |
465 |
+ |
ForceSubtractionPolicy(ZConstraint<T>* integrator) {zconsIntegrator = integrator;} |
466 |
+ |
|
467 |
+ |
virtual void update() = 0; |
468 |
+ |
virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) = 0; |
469 |
+ |
virtual double getZFOfMovingMols(Atom* atom, double totalForce) = 0; |
470 |
+ |
virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) = 0; |
471 |
+ |
virtual double getHFOfUnconsMols(Atom* atom, double totalForce) = 0; |
472 |
+ |
|
473 |
+ |
protected: |
474 |
+ |
ZConstraint<T>* zconsIntegrator;; |
475 |
+ |
}; |
476 |
+ |
|
477 |
+ |
class PolicyByNumber : public ForceSubtractionPolicy{ |
478 |
+ |
|
479 |
+ |
public: |
480 |
+ |
PolicyByNumber(ZConstraint<T>* integrator) :ForceSubtractionPolicy(integrator) {} |
481 |
+ |
virtual void update(); |
482 |
+ |
virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) ; |
483 |
+ |
virtual double getZFOfMovingMols(Atom* atom, double totalForce) ; |
484 |
+ |
virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce); |
485 |
+ |
virtual double getHFOfUnconsMols(Atom* atom, double totalForce); |
486 |
+ |
|
487 |
+ |
private: |
488 |
+ |
int totNumOfMovingAtoms; |
489 |
+ |
}; |
490 |
+ |
|
491 |
+ |
class PolicyByMass : public ForceSubtractionPolicy{ |
492 |
+ |
|
493 |
+ |
public: |
494 |
+ |
PolicyByMass(ZConstraint<T>* integrator) :ForceSubtractionPolicy(integrator) {} |
495 |
+ |
|
496 |
+ |
virtual void update(); |
497 |
+ |
virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) ; |
498 |
+ |
virtual double getZFOfMovingMols(Atom* atom, double totalForce) ; |
499 |
+ |
virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce); |
500 |
+ |
virtual double getHFOfUnconsMols(Atom* atom, double totalForce); |
501 |
+ |
|
502 |
+ |
private: |
503 |
+ |
double totMassOfMovingAtoms; |
504 |
+ |
}; |
505 |
+ |
|
506 |
+ |
public: |
507 |
+ |
|
508 |
+ |
ZConstraint( SimInfo *theInfo, ForceFields* the_ff); |
509 |
+ |
~ZConstraint(); |
510 |
+ |
|
511 |
+ |
void setZConsTime(double time) {this->zconsTime = time;} |
512 |
+ |
void getZConsTime() {return zconsTime;} |
513 |
+ |
|
514 |
+ |
void setIndexOfAllZConsMols(vector<int> index) {indexOfAllZConsMols = index;} |
515 |
+ |
void getIndexOfAllZConsMols() {return indexOfAllZConsMols;} |
516 |
+ |
|
517 |
+ |
void setZConsOutput(const char * fileName) {zconsOutput = fileName;} |
518 |
+ |
string getZConsOutput() {return zconsOutput;} |
519 |
+ |
|
520 |
+ |
virtual void integrate(); |
521 |
+ |
|
522 |
+ |
|
523 |
+ |
#ifdef IS_MPI |
524 |
+ |
virtual void update(); //which is called to indicate the molecules' migration |
525 |
+ |
#endif |
526 |
+ |
|
527 |
+ |
protected: |
528 |
+ |
|
529 |
+ |
enum ZConsState {zcsMoving, zcsFixed}; |
530 |
+ |
|
531 |
+ |
virtual void calcForce( int calcPot, int calcStress ); |
532 |
+ |
virtual void thermalize(void); |
533 |
+ |
|
534 |
+ |
void zeroOutVel(); |
535 |
+ |
void doZconstraintForce(); |
536 |
+ |
void doHarmonic(); |
537 |
+ |
bool checkZConsState(); |
538 |
+ |
|
539 |
+ |
bool haveFixedZMols(); |
540 |
+ |
bool haveMovingZMols(); |
541 |
+ |
|
542 |
+ |
double calcZSys(); |
543 |
+ |
|
544 |
+ |
int isZConstraintMol(Molecule* mol); |
545 |
+ |
|
546 |
+ |
|
547 |
+ |
double zconsTime; //sample time |
548 |
+ |
double zconsTol; //tolerance of z-contratint |
549 |
+ |
double zForceConst; //base force constant term |
550 |
+ |
//which is estimate by OOPSE |
551 |
+ |
|
552 |
+ |
vector<Molecule*> zconsMols; //z-constraint molecules array |
553 |
+ |
vector<double> massOfZConsMols; //mass of z-constraint molecule |
554 |
+ |
vector<double> kz; //force constant array |
555 |
+ |
vector<ZConsState> states; //state of z-constraint molecules |
556 |
+ |
vector<double> zPos; // |
557 |
+ |
|
558 |
+ |
|
559 |
+ |
vector<Molecule*> unconsMols; //unconstraint molecules array |
560 |
+ |
vector<double> massOfUnconsMols; //mass array of unconstraint molecules |
561 |
+ |
double totalMassOfUncons; //total mas of unconstraint molecules |
562 |
+ |
|
563 |
+ |
vector<ZConsParaItem>* parameters; // |
564 |
+ |
|
565 |
+ |
vector<int> indexOfAllZConsMols; //index of All Z-Constraint Molecuels |
566 |
+ |
|
567 |
+ |
int* indexOfZConsMols; //index of local Z-Constraint Molecules |
568 |
+ |
double* fz; |
569 |
+ |
double* curZPos; |
570 |
+ |
|
571 |
+ |
int totNumOfUnconsAtoms; //total number of uncontraint atoms |
572 |
+ |
|
573 |
+ |
int whichDirection; //constraint direction |
574 |
+ |
|
575 |
+ |
private: |
576 |
+ |
|
577 |
+ |
string zconsOutput; //filename of zconstraint output |
578 |
+ |
ZConsWriter* fzOut; //z-constraint writer |
579 |
+ |
|
580 |
+ |
double curZconsTime; |
581 |
+ |
|
582 |
+ |
double calcMovingMolsCOMVel(); |
583 |
+ |
double calcSysCOMVel(); |
584 |
+ |
double calcTotalForce(); |
585 |
+ |
|
586 |
+ |
ForceSubtractionPolicy* forcePolicy; //force subtraction policy |
587 |
+ |
friend class ForceSubtractionPolicy; |
588 |
+ |
|
589 |
|
}; |
590 |
|
|
591 |
|
#endif |