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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 "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 ); |
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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 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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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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}; |
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typedef Integrator<BaseIntegrator> RealIntegrator; |
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|
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template<typename T> class NVE : public T { |
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|
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public: |
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Symplectic( SimInfo* the_entry_plug, ForceFields* the_ff ); |
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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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|
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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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|
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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 int readyCheck(); |
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|
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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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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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|
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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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// 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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|
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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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|
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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 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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|
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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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// 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 NPTfm : public T{ |
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public: |
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|
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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 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; |
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|
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}; |
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|
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template<typename T> class NPTpr : public T{ |
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|
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public: |
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|
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NPTpr ( SimInfo *theInfo, ForceFields* the_ff); |
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virtual ~NPTpr() {}; |
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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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// 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 ZConstraint : public T { |
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|
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public: |
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class ForceSubtractionPolicy{ |
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public: |
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ForceSubtractionPolicy(ZConstraint<T>* integrator) {zconsIntegrator = integrator;} |
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|
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virtual void update() = 0; |
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virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) = 0; |
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virtual double getZFOfMovingMols(Atom* atom, double totalForce) = 0; |
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virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) = 0; |
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virtual double getHFOfUnconsMols(Atom* atom, double totalForce) = 0; |
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|
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protected: |
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ZConstraint<T>* zconsIntegrator;; |
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}; |
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|
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class PolicyByNumber : public ForceSubtractionPolicy{ |
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public: |
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PolicyByNumber(ZConstraint<T>* integrator) :ForceSubtractionPolicy(integrator) {} |
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virtual void update(); |
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virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) ; |
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virtual double getZFOfMovingMols(Atom* atom, double totalForce) ; |
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virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce); |
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virtual double getHFOfUnconsMols(Atom* atom, double totalForce); |
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|
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private: |
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int totNumOfMovingAtoms; |
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}; |
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|
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class PolicyByMass : public ForceSubtractionPolicy{ |
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public: |
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PolicyByMass(ZConstraint<T>* integrator) :ForceSubtractionPolicy(integrator) {} |
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|
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virtual void update(); |
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virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) ; |
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virtual double getZFOfMovingMols(Atom* atom, double totalForce) ; |
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virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce); |
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virtual double getHFOfUnconsMols(Atom* atom, double totalForce); |
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|
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private: |
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double totMassOfMovingAtoms; |
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}; |
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|
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public: |
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|
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ZConstraint( SimInfo *theInfo, ForceFields* the_ff); |
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~ZConstraint(); |
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|
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void setZConsTime(double time) {this->zconsTime = time;} |
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void getZConsTime() {return zconsTime;} |
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|
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void setIndexOfAllZConsMols(vector<int> index) {indexOfAllZConsMols = index;} |
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void getIndexOfAllZConsMols() {return indexOfAllZConsMols;} |
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|
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void setZConsOutput(const char * fileName) {zconsOutput = fileName;} |
402 |
+ |
string getZConsOutput() {return zconsOutput;} |
403 |
+ |
|
404 |
+ |
virtual void integrate(); |
405 |
+ |
|
406 |
+ |
|
407 |
+ |
#ifdef IS_MPI |
408 |
+ |
virtual void update(); //which is called to indicate the molecules' migration |
409 |
+ |
#endif |
410 |
+ |
|
411 |
+ |
protected: |
412 |
+ |
|
413 |
+ |
enum ZConsState {zcsMoving, zcsFixed}; |
414 |
+ |
|
415 |
+ |
virtual void calcForce( int calcPot, int calcStress ); |
416 |
+ |
virtual void thermalize(void); |
417 |
+ |
|
418 |
+ |
void zeroOutVel(); |
419 |
+ |
void doZconstraintForce(); |
420 |
+ |
void doHarmonic(); |
421 |
+ |
bool checkZConsState(); |
422 |
+ |
|
423 |
+ |
bool haveFixedZMols(); |
424 |
+ |
bool haveMovingZMols(); |
425 |
+ |
|
426 |
+ |
double calcZSys(); |
427 |
+ |
|
428 |
+ |
int isZConstraintMol(Molecule* mol); |
429 |
+ |
|
430 |
+ |
|
431 |
+ |
double zconsTime; //sample time |
432 |
+ |
double zconsTol; //tolerance of z-contratint |
433 |
+ |
double zForceConst; //base force constant term |
434 |
+ |
//which is estimate by OOPSE |
435 |
+ |
|
436 |
+ |
vector<Molecule*> zconsMols; //z-constraint molecules array |
437 |
+ |
vector<double> massOfZConsMols; //mass of z-constraint molecule |
438 |
+ |
vector<double> kz; //force constant array |
439 |
+ |
vector<ZConsState> states; //state of z-constraint molecules |
440 |
+ |
vector<double> zPos; // |
441 |
+ |
|
442 |
+ |
|
443 |
+ |
vector<Molecule*> unconsMols; //unconstraint molecules array |
444 |
+ |
vector<double> massOfUnconsMols; //mass array of unconstraint molecules |
445 |
+ |
double totalMassOfUncons; //total mas of unconstraint molecules |
446 |
+ |
|
447 |
+ |
vector<ZConsParaItem>* parameters; // |
448 |
+ |
|
449 |
+ |
vector<int> indexOfAllZConsMols; //index of All Z-Constraint Molecuels |
450 |
+ |
|
451 |
+ |
int* indexOfZConsMols; //index of local Z-Constraint Molecules |
452 |
+ |
double* fz; |
453 |
+ |
double* curZPos; |
454 |
+ |
|
455 |
+ |
int totNumOfUnconsAtoms; //total number of uncontraint atoms |
456 |
+ |
|
457 |
+ |
int whichDirection; //constraint direction |
458 |
+ |
|
459 |
+ |
private: |
460 |
+ |
|
461 |
+ |
string zconsOutput; //filename of zconstraint output |
462 |
+ |
ZConsWriter* fzOut; //z-constraint writer |
463 |
+ |
|
464 |
+ |
double curZconsTime; |
465 |
+ |
|
466 |
+ |
double calcMovingMolsCOMVel(); |
467 |
+ |
double calcSysCOMVel(); |
468 |
+ |
double calcTotalForce(); |
469 |
+ |
|
470 |
+ |
ForceSubtractionPolicy* forcePolicy; //force substration policy |
471 |
+ |
friend class ForceSubtractionPolicy; |
472 |
+ |
|
473 |
|
}; |
474 |
|
|
475 |
|
#endif |