src/nonbonded/Electrostatic.hpp

/*
 * Copyright (c) 2009 The University of Notre Dame. All Rights Reserved.
 *
 * The University of Notre Dame grants you ("Licensee") a
 * non-exclusive, royalty free, license to use, modify and
 * redistribute this software in source and binary code form, provided
 * that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. All express or implied conditions, representations and
 * warranties, including any implied warranty of merchantability,
 * fitness for a particular purpose or non-infringement, are hereby
 * excluded.  The University of Notre Dame and its licensors shall not
 * be liable for any damages suffered by licensee as a result of
 * using, modifying or distributing the software or its
 * derivatives. In no event will the University of Notre Dame or its
 * licensors be liable for any lost revenue, profit or data, or for
 * direct, indirect, special, consequential, incidental or punitive
 * damages, however caused and regardless of the theory of liability,
 * arising out of the use of or inability to use software, even if the
 * University of Notre Dame has been advised of the possibility of
 * such damages.
 *
 * SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your
 * research, please cite the appropriate papers when you publish your
 * work.  Good starting points are:
 *                                                                      
 * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).             
 * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).          
 * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).          
 * [4]  Vardeman & Gezelter, in progress (2009).                        
 */
 
#ifndef NONBONDED_ELECTROSTATIC_HPP
#define NONBONDED_ELECTROSTATIC_HPP

#include "nonbonded/NonBondedInteraction.hpp"
#include "types/AtomType.hpp"
#include "UseTheForce/ForceField.hpp"
#include "math/SquareMatrix3.hpp"
#include "math/CubicSpline.hpp"

namespace OpenMD {

  struct ElectrostaticAtomData {
    bool is_Charge;
    bool is_Dipole;
    bool is_SplitDipole;
    bool is_Quadrupole;
    RealType charge;
    RealType dipole_moment;
    RealType split_dipole_distance;
    Vector3d quadrupole_moments;
  };
  
  enum ElectrostaticSummationMethod{
    NONE,
    SWITCHING_FUNCTION,
    SHIFTED_POTENTIAL,
    SHIFTED_FORCE,
    REACTION_FIELD,
    EWALD_FULL,  /**< Ewald methods aren't supported yet */
    EWALD_PME,   /**< Ewald methods aren't supported yet */
    EWALD_SPME   /**< Ewald methods aren't supported yet */
  };

  enum ElectrostaticScreeningMethod{
    UNDAMPED,
    DAMPED
  };
  
  class Electrostatic : public ElectrostaticInteraction {
    
  public:    
    Electrostatic();
    void setForceField(ForceField *ff) {forceField_ = ff;};
    void addType(AtomType* atomType);
    void calcForce(InteractionData idat);
    void calcSkipCorrection(SkipCorrectionData skdat);
    void calcSelfCorrection(SelfCorrectionData scdat);
    virtual string getName() {return name_;}

    void setElectrostaticCutoffRadius( RealType theECR, RealType theRSW );
    void setElectrostaticSummationMethod( ElectrostaticSummationMethod esm );
    void setElectrostaticScreeningMethod( ElectrostaticScreeningMethod sm );
    void setDampingAlpha( RealType alpha );
    void setReactionFieldDielectric( RealType dielectric );

  private:
    void initialize();
    string name_;
    bool initialized_;
    bool haveDefaultCutoff_;
    bool haveDampingAlpha_;
    bool haveDielectric_;
    bool haveElectroSpline_;
    std::map<int, AtomType*> ElectrostaticList;
    std::map<AtomType*, ElectrostaticAtomData> ElectrostaticMap;
    ForceField* forceField_;
    RealType defaultCutoff_;
    RealType defaultCutoff2_;
    RealType pre11_;
    RealType pre12_;
    RealType pre22_;
    RealType pre14_;
    RealType chargeToC_;
    RealType angstromToM_;
    RealType debyeToCm_;
    int np_;
    ElectrostaticSummationMethod summationMethod_;    
    ElectrostaticScreeningMethod screeningMethod_;
    RealType dampingAlpha_;
    RealType alpha2_;
    RealType alpha4_;
    RealType alpha6_;
    RealType alpha8_;
    RealType dielectric_;
    RealType constEXP_;
    RealType rcuti_;
    RealType rcuti2_;
    RealType rcuti3_;
    RealType rcuti4_;
    RealType alphaPi_;
    RealType invRootPi_;
    RealType rrf_;
    RealType rt_;
    RealType rrfsq_;
    RealType preRF_;
    RealType preRF2_;
    RealType erfcVal_;
    RealType derfcVal_;
    CubicSpline* erfcSpline_;
    RealType c1_;
    RealType c2_;
    RealType c3_;
    RealType c4_;
    RealType c5_;
    RealType c6_;
    RealType c1c_;
    RealType c2c_;
    RealType c3c_;
    RealType c4c_;
    RealType c5c_;
    RealType c6c_;
    RealType one_third_;    
  };
}

                               
#endif
Revision:	1502
Committed:	Sat Oct 2 19:53:32 2010 UTC (14 years, 9 months ago) by gezelter
File size:	5202 byte(s)
Log Message:	Many changes, and we're not quite done with this phase yet.
#	Content
1	/*
2	* Copyright (c) 2009 The University of Notre Dame. All Rights Reserved.
3	*
4	* The University of Notre Dame grants you ("Licensee") a
5	* non-exclusive, royalty free, license to use, modify and
6	* redistribute this software in source and binary code form, provided
7	* that the following conditions are met:
8	*
9	* 1. Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.
11	*
12	* 2. Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the
15	* distribution.
16	*
17	* This software is provided "AS IS," without a warranty of any
18	* kind. All express or implied conditions, representations and
19	* warranties, including any implied warranty of merchantability,
20	* fitness for a particular purpose or non-infringement, are hereby
21	* excluded. The University of Notre Dame and its licensors shall not
22	* be liable for any damages suffered by licensee as a result of
23	* using, modifying or distributing the software or its
24	* derivatives. In no event will the University of Notre Dame or its
25	* licensors be liable for any lost revenue, profit or data, or for
26	* direct, indirect, special, consequential, incidental or punitive
27	* damages, however caused and regardless of the theory of liability,
28	* arising out of the use of or inability to use software, even if the
29	* University of Notre Dame has been advised of the possibility of
30	* such damages.
31	*
32	* SUPPORT OPEN SCIENCE! If you use OpenMD or its source code in your
33	* research, please cite the appropriate papers when you publish your
34	* work. Good starting points are:
35	*
36	* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).
37	* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).
38	* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).
39	* [4] Vardeman & Gezelter, in progress (2009).
40	*/
41
42	#ifndef NONBONDED_ELECTROSTATIC_HPP
43	#define NONBONDED_ELECTROSTATIC_HPP
44
45	#include "nonbonded/NonBondedInteraction.hpp"
46	#include "types/AtomType.hpp"
47	#include "UseTheForce/ForceField.hpp"
48	#include "math/SquareMatrix3.hpp"
49	#include "math/CubicSpline.hpp"
50
51	namespace OpenMD {
52
53	struct ElectrostaticAtomData {
54	bool is_Charge;
55	bool is_Dipole;
56	bool is_SplitDipole;
57	bool is_Quadrupole;
58	RealType charge;
59	RealType dipole_moment;
60	RealType split_dipole_distance;
61	Vector3d quadrupole_moments;
62	};
63
64	enum ElectrostaticSummationMethod{
65	NONE,
66	SWITCHING_FUNCTION,
67	SHIFTED_POTENTIAL,
68	SHIFTED_FORCE,
69	REACTION_FIELD,
70	EWALD_FULL, /*< Ewald methods aren't supported yet /
71	EWALD_PME, /*< Ewald methods aren't supported yet /
72	EWALD_SPME /*< Ewald methods aren't supported yet /
73	};
74
75	enum ElectrostaticScreeningMethod{
76	UNDAMPED,
77	DAMPED
78	};
79
80	class Electrostatic : public ElectrostaticInteraction {
81
82	public:
83	Electrostatic();
84	void setForceField(ForceField *ff) {forceField_ = ff;};
85	void addType(AtomType* atomType);
86	void calcForce(InteractionData idat);
87	void calcSkipCorrection(SkipCorrectionData skdat);
88	void calcSelfCorrection(SelfCorrectionData scdat);
89	virtual string getName() {return name_;}
90
91	void setElectrostaticCutoffRadius( RealType theECR, RealType theRSW );
92	void setElectrostaticSummationMethod( ElectrostaticSummationMethod esm );
93	void setElectrostaticScreeningMethod( ElectrostaticScreeningMethod sm );
94	void setDampingAlpha( RealType alpha );
95	void setReactionFieldDielectric( RealType dielectric );
96
97	private:
98	void initialize();
99	string name_;
100	bool initialized_;
101	bool haveDefaultCutoff_;
102	bool haveDampingAlpha_;
103	bool haveDielectric_;
104	bool haveElectroSpline_;
105	std::map<int, AtomType*> ElectrostaticList;
106	std::map<AtomType*, ElectrostaticAtomData> ElectrostaticMap;
107	ForceField* forceField_;
108	RealType defaultCutoff_;
109	RealType defaultCutoff2_;
110	RealType pre11_;
111	RealType pre12_;
112	RealType pre22_;
113	RealType pre14_;
114	RealType chargeToC_;
115	RealType angstromToM_;
116	RealType debyeToCm_;
117	int np_;
118	ElectrostaticSummationMethod summationMethod_;
119	ElectrostaticScreeningMethod screeningMethod_;
120	RealType dampingAlpha_;
121	RealType alpha2_;
122	RealType alpha4_;
123	RealType alpha6_;
124	RealType alpha8_;
125	RealType dielectric_;
126	RealType constEXP_;
127	RealType rcuti_;
128	RealType rcuti2_;
129	RealType rcuti3_;
130	RealType rcuti4_;
131	RealType alphaPi_;
132	RealType invRootPi_;
133	RealType rrf_;
134	RealType rt_;
135	RealType rrfsq_;
136	RealType preRF_;
137	RealType preRF2_;
138	RealType erfcVal_;
139	RealType derfcVal_;
140	CubicSpline* erfcSpline_;
141	RealType c1_;
142	RealType c2_;
143	RealType c3_;
144	RealType c4_;
145	RealType c5_;
146	RealType c6_;
147	RealType c1c_;
148	RealType c2c_;
149	RealType c3c_;
150	RealType c4c_;
151	RealType c5c_;
152	RealType c6c_;
153	RealType one_third_;
154	};
155	}
156
157
158	#endif