src/nonbonded/LJ.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_LJ_HPP
#define NONBONDED_LJ_HPP

#include "types/AtomType.hpp"
#include "UseTheForce/ForceField.hpp"
#include "math/Vector3.hpp"

namespace OpenMD {

  struct LJInteractionData {
    RealType sigma;
    RealType epsilon;
    RealType sigmai;
    bool explicitlySet;
  };

  class LJ {
    
  public:    
    static LJ* Instance();
    static void setForceField(ForceField *ff) {forceField_ = ff;};
    static void initialize();
    static void addType(AtomType* atomType);
    static void addExplicitInteraction(AtomType* atype1, AtomType* atype2, RealType sigma, RealType epsilon);
    static void calcForce(AtomType* at1, AtomType* at2, Vector3d d, RealType rij, RealType r2, RealType rcut, RealType sw, RealType vdwMult, RealType vpair, RealType pot, Vector3d f1);

    // Fortran support routines;
    static RealType getSigma(int atid);
    static RealType getEpsilon(int atid);
    static void do_lj_pair(int *atid1, int *atid2, RealType *d, RealType *rij, RealType *r2, RealType *rcut, RealType *sw, RealType *vdwMult, RealType *vpair, RealType *pot, RealType *f1);
    static void setLJDefaultCutoff(RealType *thisRcut, int *sP, int *sF);

  private:
    // singleton pattern, prevent reconstruction
    LJ() {};
    LJ(LJ const &) {};
    LJ& operator=(LJ const&) {};
    static LJ* _instance;
  
    static LJParam  getLJParam(AtomType* atomType);
    static RealType getSigma(AtomType* atomType);
    static RealType getEpsilon(AtomType* atomType);
    
    static RealType getSigma(AtomType* atomType1, AtomType* atomType2);
    static RealType getEpsilon(AtomType* atomType1, AtomType* atomType2);
    
    static void getLJfunc(const RealType r, RealType pot, RealType deriv);

    static bool initialized_;
    // LJMap will be used for providing access from Fortran.
    // All of the C++ native classes should use AtomType*, but the
    // fortran calls use int, so we need to look these up first before
    // we can do anything else;
    static std::map<int, AtomType*> LJMap;
    static std::map<std::pair<AtomType*, AtomType*>, LJInteractionData> MixingMap;
    static bool shiftedPot_;
    static bool shiftedFrc_;
    static ForceField* forceField_;
    
  };
}

                               
#endif
Revision:	1471
Committed:	Mon Jul 19 18:59:59 2010 UTC (15 years ago) by gezelter
File size:	4360 byte(s)
Log Message:	Added nonbonded directory. Compiles, links, runs, but gives incorrect answer.
#	User	Rev	Content
1	gezelter	1471	/*
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_LJ_HPP
43			#define NONBONDED_LJ_HPP
44
45			#include "types/AtomType.hpp"
46			#include "UseTheForce/ForceField.hpp"
47			#include "math/Vector3.hpp"
48
49			namespace OpenMD {
50
51			struct LJInteractionData {
52			RealType sigma;
53			RealType epsilon;
54			RealType sigmai;
55			bool explicitlySet;
56			};
57
58			class LJ {
59
60			public:
61			static LJ* Instance();
62			static void setForceField(ForceField *ff) {forceField_ = ff;};
63			static void initialize();
64			static void addType(AtomType* atomType);
65			static void addExplicitInteraction(AtomType* atype1, AtomType* atype2, RealType sigma, RealType epsilon);
66			static void calcForce(AtomType* at1, AtomType* at2, Vector3d d, RealType rij, RealType r2, RealType rcut, RealType sw, RealType vdwMult, RealType vpair, RealType pot, Vector3d f1);
67
68			// Fortran support routines;
69			static RealType getSigma(int atid);
70			static RealType getEpsilon(int atid);
71			static void do_lj_pair(int atid1, int atid2, RealType d, RealType rij, RealType r2, RealType rcut, RealType sw, RealType vdwMult, RealType vpair, RealType pot, RealType *f1);
72			static void setLJDefaultCutoff(RealType thisRcut, int sP, int *sF);
73
74			private:
75			// singleton pattern, prevent reconstruction
76			LJ() {};
77			LJ(LJ const &) {};
78			LJ& operator=(LJ const&) {};
79			static LJ* _instance;
80
81			static LJParam getLJParam(AtomType* atomType);
82			static RealType getSigma(AtomType* atomType);
83			static RealType getEpsilon(AtomType* atomType);
84
85			static RealType getSigma(AtomType* atomType1, AtomType* atomType2);
86			static RealType getEpsilon(AtomType* atomType1, AtomType* atomType2);
87
88			static void getLJfunc(const RealType r, RealType pot, RealType deriv);
89
90			static bool initialized_;
91			// LJMap will be used for providing access from Fortran.
92			// All of the C++ native classes should use AtomType*, but the
93			// fortran calls use int, so we need to look these up first before
94			// we can do anything else;
95			static std::map<int, AtomType*> LJMap;
96			static std::map<std::pair<AtomType, AtomType>, LJInteractionData> MixingMap;
97			static bool shiftedPot_;
98			static bool shiftedFrc_;
99			static ForceField* forceField_;
100
101			};
102			}
103
104
105			#endif