| 1 | /* | 
| 2 | * Copyright (c) 2005 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, 234107 (2008). | 
| 39 | * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010). | 
| 40 | * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). | 
| 41 | */ | 
| 42 |  | 
| 43 |  | 
| 44 | #ifndef CONSTRAINTS_CONTRAINTPAIR_HPP | 
| 45 | #define CONSTRAINTS_CONTRAINTPAIR_HPP | 
| 46 |  | 
| 47 | #include "primitives/StuntDouble.hpp" | 
| 48 | #include "constraints/ConstraintElem.hpp" | 
| 49 | namespace OpenMD { | 
| 50 |  | 
| 51 |  | 
| 52 | /** | 
| 53 | * @class ConstraintPair | 
| 54 | * @todo document | 
| 55 | */ | 
| 56 | class ConstraintPair { | 
| 57 |  | 
| 58 | public: | 
| 59 |  | 
| 60 | ConstraintPair(ConstraintElem* elem1, ConstraintElem* elem2, | 
| 61 | RealType len, bool printForce) | 
| 62 | : consElem1_(elem1), consElem2_(elem2), dist2(len*len), | 
| 63 | printForce_(printForce) { } | 
| 64 |  | 
| 65 | ~ConstraintPair() { | 
| 66 | delete consElem1_; | 
| 67 | delete consElem2_; | 
| 68 | } | 
| 69 | /** Return the first constraint elemet */ | 
| 70 | ConstraintElem* getConsElem1() {return consElem1_;} | 
| 71 |  | 
| 72 | /** Retunr the second constraint element */ | 
| 73 | ConstraintElem* getConsElem2() {return consElem2_;} | 
| 74 |  | 
| 75 | bool isMoved() { return consElem1_->getMoved() || consElem2_->getMoved(); } | 
| 76 | RealType getConsDistSquare() {return dist2;} | 
| 77 | void setConstraintForce(RealType frc) { force_ = frc; } | 
| 78 | RealType getConstraintForce() { return force_; } | 
| 79 | bool getPrintForce() {return printForce_;} | 
| 80 |  | 
| 81 | private: | 
| 82 |  | 
| 83 | ConstraintElem* consElem1_; | 
| 84 | ConstraintElem* consElem2_; | 
| 85 | RealType dist2; | 
| 86 | RealType force_; | 
| 87 | bool printForce_; | 
| 88 | }; | 
| 89 |  | 
| 90 | } | 
| 91 |  | 
| 92 | #endif |