applications/staticProps/P2OrderParameter.cpp

/*
 * Copyright (c) 2005 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).                        
 */

#include "applications/staticProps/P2OrderParameter.hpp"
#include "utils/simError.h"
#include "io/DumpReader.hpp"
#include "primitives/Molecule.hpp"
#include "utils/NumericConstant.hpp"

using namespace std;
namespace OpenMD {

  P2OrderParameter::P2OrderParameter(SimInfo* info, const string& filename, 
                                     const string& sele1)
    : StaticAnalyser(info, filename), doVect_(true),
      selectionScript1_(sele1), evaluator1_(info), 
      evaluator2_(info), seleMan1_(info), seleMan2_(info) {
    
    setOutputName(getPrefix(filename) + ".p2");
    
    evaluator1_.loadScriptString(sele1);
    
    if (!evaluator1_.isDynamic()) {
      seleMan1_.setSelectionSet(evaluator1_.evaluate());
    }
  }

  P2OrderParameter::P2OrderParameter(SimInfo* info, const string& filename, 
                                     const string& sele1, const string& sele2)
    : StaticAnalyser(info, filename), doVect_(false),
      selectionScript1_(sele1), selectionScript2_(sele2), evaluator1_(info), 
      evaluator2_(info), seleMan1_(info), seleMan2_(info) {
    
    setOutputName(getPrefix(filename) + ".p2");
    
    evaluator1_.loadScriptString(sele1);
    evaluator2_.loadScriptString(sele2);
    
    if (!evaluator1_.isDynamic()) {
      seleMan1_.setSelectionSet(evaluator1_.evaluate());
    }else {
      sprintf( painCave.errMsg,
               "--sele1 must be static selection\n");
      painCave.severity = OPENMD_ERROR;
      painCave.isFatal = 1;
      simError();  
    }
    
    if (!evaluator2_.isDynamic()) {
      seleMan2_.setSelectionSet(evaluator2_.evaluate());
    }else {
      sprintf( painCave.errMsg,
               "--sele2 must be static selection\n");
      painCave.severity = OPENMD_ERROR;
      painCave.isFatal = 1;
      simError();  
    }
    
    if (seleMan1_.getSelectionCount() != seleMan2_.getSelectionCount() ) {
      sprintf( painCave.errMsg,
               "The number of selected Stuntdoubles are not the same in --sele1 and sele2\n");
      painCave.severity = OPENMD_ERROR;
      painCave.isFatal = 1;
      simError();  
      
    }
    
    int i;
    int j;
    StuntDouble* sd1;
    StuntDouble* sd2;
    for (sd1 = seleMan1_.beginSelected(i), sd2 = seleMan2_.beginSelected(j);
         sd1 != NULL && sd2 != NULL;
         sd1 = seleMan1_.nextSelected(i), sd2 = seleMan2_.nextSelected(j)) {

      sdPairs_.push_back(make_pair(sd1, sd2));
    } 
  }

  void P2OrderParameter::process() {
    Molecule* mol;
    RigidBody* rb;
    SimInfo::MoleculeIterator mi;
    Molecule::RigidBodyIterator rbIter;
    StuntDouble* sd;
    int i, ii;
  
    DumpReader reader(info_, dumpFilename_);    
    int nFrames = reader.getNFrames();

    for (int i = 0; i < nFrames; i += step_) {
      reader.readFrame(i);
      currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
      
      for (mol = info_->beginMolecule(mi); mol != NULL; 
           mol = info_->nextMolecule(mi)) {
        //change the positions of atoms which belong to the rigidbodies
        for (rb = mol->beginRigidBody(rbIter); rb != NULL; 
             rb = mol->nextRigidBody(rbIter)) {
          rb->updateAtoms();
        }        
      }      

      Mat3x3d orderTensor(0.0);

      if (doVect_) {
        
        if  (evaluator1_.isDynamic()) 
          seleMan1_.setSelectionSet(evaluator1_.evaluate());
        
        for (sd = seleMan1_.beginSelected(ii); sd != NULL; 
             sd = seleMan1_.nextSelected(ii)) {
          if (sd->isDirectional()) {
            Vector3d vec = sd->getA().getColumn(2);
            vec.normalize();
            orderTensor += outProduct(vec, vec);
          }
        }
  
        orderTensor /= seleMan1_.getSelectionCount();

      } else {
            
        for (vector<pair<StuntDouble*, StuntDouble*> >::iterator j = sdPairs_.begin(); 
             j != sdPairs_.end(); ++j) {
          Vector3d vec = j->first->getPos() - j->second->getPos();
          if (usePeriodicBoundaryConditions_)
            currentSnapshot_->wrapVector(vec);
          vec.normalize();
          orderTensor +=outProduct(vec, vec);
        }
      
        orderTensor /= sdPairs_.size();
      }
      

      orderTensor -= (RealType)(1.0/3.0) * Mat3x3d::identity();  
      
      Vector3d eigenvalues;
      Mat3x3d eigenvectors;    

      Mat3x3d::diagonalize(orderTensor, eigenvalues, eigenvectors);
      
      int which;
      RealType maxEval = 0.0;
      for(int k = 0; k< 3; k++){
        if(fabs(eigenvalues[k]) > maxEval){
          which = k;
          maxEval = fabs(eigenvalues[k]);
        }
      }
      RealType p2 = 1.5 * maxEval;
      
      //the eigen vector is already normalized in SquareMatrix3::diagonalize
      Vector3d director = eigenvectors.getColumn(which);
      if (director[0] < 0) {
        director.negate();
      }   

      RealType angle = 0.0;
      RealType p4 = 0.0;
      
      if (doVect_) {
        for (sd = seleMan1_.beginSelected(ii); sd != NULL; 
             sd = seleMan1_.nextSelected(ii)) {
          if (sd->isDirectional()) {
            Vector3d vec = sd->getA().getColumn(2);
            vec.normalize();
            RealType myDot = dot(vec, director);
            angle += acos(myDot);
            p4 += (35.0 * pow(myDot, 4) - 30.0 * pow(myDot, 2) + 3.0) / 8.0;
          }
        }
        angle = angle/(seleMan1_.getSelectionCount()*NumericConstant::PI)*180.0;
        p4 /= (seleMan1_.getSelectionCount());
      } else {
        for (vector<pair<StuntDouble*, StuntDouble*> >::iterator j = sdPairs_.begin(); j != sdPairs_.end(); ++j) {
          Vector3d vec = j->first->getPos() - j->second->getPos();
          if (usePeriodicBoundaryConditions_)
            currentSnapshot_->wrapVector(vec);
          vec.normalize();          
          RealType myDot = dot(vec, director);
          angle += acos(myDot);
          p4 += (35.0 * pow(myDot, 4) - 30.0 * pow(myDot, 2) + 3.0) / 8.0;
        }
        angle = angle / (sdPairs_.size() * NumericConstant::PI) * 180.0;
        p4 /= (seleMan1_.getSelectionCount());
      }

      OrderParam param;
      param.p2 = p2;
      param.director = director;
      param.angle = angle;
      param.p4 = p4;

      orderParams_.push_back(param);       
    
    }
    
    writeP2();
    
  }

  void P2OrderParameter::writeP2() {

    ofstream os(getOutputFileName().c_str());
    os << "#radial distribution function\n";
    os<< "#selection1: (" << selectionScript1_ << ")\t";
    if (!doVect_) {
      os << "selection2: (" << selectionScript2_ << ")\n";
    }
    os << "#p2\tdirector_x\tdirector_y\tdiretor_z\tangle(degree)\t<p4>\n";    

    for (size_t i = 0; i < orderParams_.size(); ++i) {
      os <<  orderParams_[i].p2 << "\t"
         <<  orderParams_[i].director[0] << "\t"
         <<  orderParams_[i].director[1] << "\t"
         <<  orderParams_[i].director[2] << "\t"
         <<  orderParams_[i].angle << "\t"
         <<  orderParams_[i].p4 << "\n";

    }

  }

}

Revision:	1657
Committed:	Tue Oct 18 13:44:44 2011 UTC (13 years, 6 months ago) by gezelter
File size:	9117 byte(s)
Log Message:	Added <P4> order parameter to the computation done during director axis and <P2> computation.
#	User	Rev	Content
1	gezelter	1078	/*
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	gezelter	1390	* 1. Redistributions of source code must retain the above copyright
10	gezelter	1078	* notice, this list of conditions and the following disclaimer.
11			*
12	gezelter	1390	* 2. Redistributions in binary form must reproduce the above copyright
13	gezelter	1078	* 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	gezelter	1390	*
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	gezelter	1078	*/
41
42			#include "applications/staticProps/P2OrderParameter.hpp"
43			#include "utils/simError.h"
44			#include "io/DumpReader.hpp"
45			#include "primitives/Molecule.hpp"
46			#include "utils/NumericConstant.hpp"
47	gezelter	1542
48			using namespace std;
49	gezelter	1390	namespace OpenMD {
50	gezelter	1078
51	gezelter	1542	P2OrderParameter::P2OrderParameter(SimInfo* info, const string& filename,
52			const string& sele1)
53			: StaticAnalyser(info, filename), doVect_(true),
54			selectionScript1_(sele1), evaluator1_(info),
55			evaluator2_(info), seleMan1_(info), seleMan2_(info) {
56
57			setOutputName(getPrefix(filename) + ".p2");
58
59			evaluator1_.loadScriptString(sele1);
60
61			if (!evaluator1_.isDynamic()) {
62			seleMan1_.setSelectionSet(evaluator1_.evaluate());
63			}
64			}
65	gezelter	1078
66	gezelter	1542	P2OrderParameter::P2OrderParameter(SimInfo* info, const string& filename,
67			const string& sele1, const string& sele2)
68			: StaticAnalyser(info, filename), doVect_(false),
69			selectionScript1_(sele1), selectionScript2_(sele2), evaluator1_(info),
70			evaluator2_(info), seleMan1_(info), seleMan2_(info) {
71
72	gezelter	1078	setOutputName(getPrefix(filename) + ".p2");
73	gezelter	1542
74	gezelter	1078	evaluator1_.loadScriptString(sele1);
75			evaluator2_.loadScriptString(sele2);
76	gezelter	1542
77	gezelter	1078	if (!evaluator1_.isDynamic()) {
78			seleMan1_.setSelectionSet(evaluator1_.evaluate());
79			}else {
80			sprintf( painCave.errMsg,
81			"--sele1 must be static selection\n");
82	gezelter	1390	painCave.severity = OPENMD_ERROR;
83	gezelter	1078	painCave.isFatal = 1;
84			simError();
85			}
86	gezelter	1542
87	gezelter	1078	if (!evaluator2_.isDynamic()) {
88			seleMan2_.setSelectionSet(evaluator2_.evaluate());
89			}else {
90			sprintf( painCave.errMsg,
91			"--sele2 must be static selection\n");
92	gezelter	1390	painCave.severity = OPENMD_ERROR;
93	gezelter	1078	painCave.isFatal = 1;
94			simError();
95			}
96	gezelter	1542
97	gezelter	1078	if (seleMan1_.getSelectionCount() != seleMan2_.getSelectionCount() ) {
98			sprintf( painCave.errMsg,
99			"The number of selected Stuntdoubles are not the same in --sele1 and sele2\n");
100	gezelter	1390	painCave.severity = OPENMD_ERROR;
101	gezelter	1078	painCave.isFatal = 1;
102			simError();
103	gezelter	1542
104	gezelter	1078	}
105	gezelter	1542
106	gezelter	1078	int i;
107			int j;
108			StuntDouble* sd1;
109			StuntDouble* sd2;
110			for (sd1 = seleMan1_.beginSelected(i), sd2 = seleMan2_.beginSelected(j);
111			sd1 != NULL && sd2 != NULL;
112			sd1 = seleMan1_.nextSelected(i), sd2 = seleMan2_.nextSelected(j)) {
113
114	gezelter	1542	sdPairs_.push_back(make_pair(sd1, sd2));
115			}
116	gezelter	1078	}
117
118			void P2OrderParameter::process() {
119			Molecule* mol;
120			RigidBody* rb;
121			SimInfo::MoleculeIterator mi;
122			Molecule::RigidBodyIterator rbIter;
123	gezelter	1542	StuntDouble* sd;
124	gezelter	1543	int i, ii;
125	gezelter	1078
126			DumpReader reader(info_, dumpFilename_);
127			int nFrames = reader.getNFrames();
128
129			for (int i = 0; i < nFrames; i += step_) {
130			reader.readFrame(i);
131			currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
132	gezelter	1543
133	gezelter	1542	for (mol = info_->beginMolecule(mi); mol != NULL;
134			mol = info_->nextMolecule(mi)) {
135	gezelter	1078	//change the positions of atoms which belong to the rigidbodies
136	gezelter	1542	for (rb = mol->beginRigidBody(rbIter); rb != NULL;
137			rb = mol->nextRigidBody(rbIter)) {
138	gezelter	1078	rb->updateAtoms();
139	gezelter	1542	}
140	gezelter	1078	}
141
142			Mat3x3d orderTensor(0.0);
143	gezelter	1542
144			if (doVect_) {
145
146			if (evaluator1_.isDynamic())
147			seleMan1_.setSelectionSet(evaluator1_.evaluate());
148
149	gezelter	1543	for (sd = seleMan1_.beginSelected(ii); sd != NULL;
150			sd = seleMan1_.nextSelected(ii)) {
151	gezelter	1542	if (sd->isDirectional()) {
152			Vector3d vec = sd->getA().getColumn(2);
153			vec.normalize();
154			orderTensor += outProduct(vec, vec);
155			}
156			}
157
158			orderTensor /= seleMan1_.getSelectionCount();
159
160			} else {
161
162			for (vector<pair<StuntDouble, StuntDouble> >::iterator j = sdPairs_.begin();
163			j != sdPairs_.end(); ++j) {
164			Vector3d vec = j->first->getPos() - j->second->getPos();
165			if (usePeriodicBoundaryConditions_)
166			currentSnapshot_->wrapVector(vec);
167			vec.normalize();
168			orderTensor +=outProduct(vec, vec);
169			}
170
171			orderTensor /= sdPairs_.size();
172	gezelter	1078	}
173
174	gezelter	1543
175	gezelter	1078	orderTensor -= (RealType)(1.0/3.0) * Mat3x3d::identity();
176
177			Vector3d eigenvalues;
178			Mat3x3d eigenvectors;
179	gezelter	1543
180	gezelter	1078	Mat3x3d::diagonalize(orderTensor, eigenvalues, eigenvectors);
181
182			int which;
183			RealType maxEval = 0.0;
184			for(int k = 0; k< 3; k++){
185			if(fabs(eigenvalues[k]) > maxEval){
186			which = k;
187			maxEval = fabs(eigenvalues[k]);
188			}
189			}
190			RealType p2 = 1.5 * maxEval;
191
192			//the eigen vector is already normalized in SquareMatrix3::diagonalize
193			Vector3d director = eigenvectors.getColumn(which);
194			if (director[0] < 0) {
195			director.negate();
196			}
197
198			RealType angle = 0.0;
199	gezelter	1657	RealType p4 = 0.0;
200	gezelter	1542
201			if (doVect_) {
202	gezelter	1543	for (sd = seleMan1_.beginSelected(ii); sd != NULL;
203			sd = seleMan1_.nextSelected(ii)) {
204	gezelter	1542	if (sd->isDirectional()) {
205			Vector3d vec = sd->getA().getColumn(2);
206			vec.normalize();
207	gezelter	1657	RealType myDot = dot(vec, director);
208			angle += acos(myDot);
209			p4 += (35.0 * pow(myDot, 4) - 30.0 * pow(myDot, 2) + 3.0) / 8.0;
210	gezelter	1542	}
211			}
212			angle = angle/(seleMan1_.getSelectionCount()NumericConstant::PI)180.0;
213	gezelter	1657	p4 /= (seleMan1_.getSelectionCount());
214	gezelter	1542	} else {
215			for (vector<pair<StuntDouble, StuntDouble> >::iterator j = sdPairs_.begin(); j != sdPairs_.end(); ++j) {
216			Vector3d vec = j->first->getPos() - j->second->getPos();
217			if (usePeriodicBoundaryConditions_)
218			currentSnapshot_->wrapVector(vec);
219	gezelter	1558	vec.normalize();
220	gezelter	1657	RealType myDot = dot(vec, director);
221			angle += acos(myDot);
222			p4 += (35.0 * pow(myDot, 4) - 30.0 * pow(myDot, 2) + 3.0) / 8.0;
223	gezelter	1542	}
224			angle = angle / (sdPairs_.size() * NumericConstant::PI) * 180.0;
225	gezelter	1657	p4 /= (seleMan1_.getSelectionCount());
226	gezelter	1078	}
227
228			OrderParam param;
229			param.p2 = p2;
230			param.director = director;
231			param.angle = angle;
232	gezelter	1657	param.p4 = p4;
233	gezelter	1078
234			orderParams_.push_back(param);
235
236			}
237	gezelter	1542
238	gezelter	1078	writeP2();
239	gezelter	1542
240	gezelter	1078	}
241
242			void P2OrderParameter::writeP2() {
243
244	gezelter	1542	ofstream os(getOutputFileName().c_str());
245	gezelter	1078	os << "#radial distribution function\n";
246			os<< "#selection1: (" << selectionScript1_ << ")\t";
247	gezelter	1542	if (!doVect_) {
248			os << "selection2: (" << selectionScript2_ << ")\n";
249			}
250	gezelter	1657	os << "#p2\tdirector_x\tdirector_y\tdiretor_z\tangle(degree)\t<p4>\n";
251	gezelter	1078
252	gezelter	1542	for (size_t i = 0; i < orderParams_.size(); ++i) {
253	gezelter	1078	os << orderParams_[i].p2 << "\t"
254			<< orderParams_[i].director[0] << "\t"
255			<< orderParams_[i].director[1] << "\t"
256			<< orderParams_[i].director[2] << "\t"
257	gezelter	1657	<< orderParams_[i].angle << "\t"
258			<< orderParams_[i].p4 << "\n";
259	gezelter	1078
260			}
261
262			}
263
264			}
265