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Comparing trunk/OOPSE-4/src/applications/staticProps/BondOrderParameter.cpp (file contents):
Revision 2925 by chuckv, Fri Jul 7 14:18:36 2006 UTC vs.
Revision 3017 by gezelter, Fri Sep 22 01:36:27 2006 UTC

# Line 1 | Line 1
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. Acknowledgement of the program authors must be made in any
10 < *    publication of scientific results based in part on use of the
11 < *    program.  An acceptable form of acknowledgement is citation of
12 < *    the article in which the program was described (Matthew
13 < *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14 < *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15 < *    Parallel Simulation Engine for Molecular Dynamics,"
16 < *    J. Comput. Chem. 26, pp. 252-271 (2005))
17 < *
18 < * 2. Redistributions of source code must retain the above copyright
19 < *    notice, this list of conditions and the following disclaimer.
20 < *
21 < * 3. Redistributions in binary form must reproduce the above copyright
22 < *    notice, this list of conditions and the following disclaimer in the
23 < *    documentation and/or other materials provided with the
24 < *    distribution.
25 < *
26 < * This software is provided "AS IS," without a warranty of any
27 < * kind. All express or implied conditions, representations and
28 < * warranties, including any implied warranty of merchantability,
29 < * fitness for a particular purpose or non-infringement, are hereby
30 < * excluded.  The University of Notre Dame and its licensors shall not
31 < * be liable for any damages suffered by licensee as a result of
32 < * using, modifying or distributing the software or its
33 < * derivatives. In no event will the University of Notre Dame or its
34 < * licensors be liable for any lost revenue, profit or data, or for
35 < * direct, indirect, special, consequential, incidental or punitive
36 < * damages, however caused and regardless of the theory of liability,
37 < * arising out of the use of or inability to use software, even if the
38 < * University of Notre Dame has been advised of the possibility of
39 < * such damages.
40 < */
41 <
42 <
43 < /* Creates orientational bond order parameters as outlined by
44 < *     Bond-orientaional order in liquids and glasses, Steinhart,Nelson,Ronchetti
45 < *     Phys Rev B, 28,784,1983
46 < *
47 < */
48 <
49 < #include "applications/staticProps/BondOrderParameter.hpp"
50 < #include "utils/simError.h"
51 < #include "io/DumpReader.hpp"
52 < #include "primitives/Molecule.hpp"
53 < #include "utils/NumericConstant.hpp"
54 < #include "math/RealSphericalHarmonic.hpp"
55 < namespace oopse {
56 <
57 <
58 < BondOrderParameter::BondOrderParameter(SimInfo* info, const std::string& filename, const std::string& sele1,
59 < const std::string& sele2, double rCut, int lNumber)
60 <  : StaticAnalyser(info, filename),
61 <    selectionScript1_(sele1), evaluator1_(info),
62 <    seleMan1_(info){
63 <
64 <    setOutputName(getPrefix(filename) + ".obo");
65 <        
66 <    evaluator1_.loadScriptString(sele1);
67 <    evaluator2_.loadScriptString(sele2);
68 <
69 <    if (!evaluator1_.isDynamic()) {
70 <      seleMan1_.setSelectionSet(evaluator1_.evaluate());
71 <    }else {
72 <        sprintf( painCave.errMsg,
73 <                 "--sele1 must be static selection\n");
74 <        painCave.severity = OOPSE_ERROR;
75 <        painCave.isFatal = 1;
76 <        simError();  
77 <    }
78 <
79 < /* Set up cutoff radius and type of order parameter we are calcuating*/
80 <        lNumber_ = lNumber;
81 <        rCut_ = rCut;
82 <        mSize_ = 2*lNumber_+1;
83 <
84 <  int i;
85 <  int j;
86 <  StuntDouble* sd1;
87 <  StuntDouble* sd2;
88 <  for (sd1 = seleMan1_.beginSelected(i), sd2 = seleMan1_.beginSelected(j);
89 <     sd1 != NULL && sd2 != NULL;
90 <     sd1 = seleMan1_.nextSelected(i), sd2 = seleMan2_.nextSelected(j)) {
91 <
92 <     sdPairs_.push_back(std::make_pair(sd1, sd2));
93 <  }
94 <
95 <    
96 <  }
97 <
98 < void BondOrderParameter::process() {
99 <  Molecule* mol;
100 <  RigidBody* rb;
101 <  SimInfo::MoleculeIterator mi;
102 <  Molecule::RigidBodyIterator rbIter;
103 <  RealType theta;
104 <  RealType phi;
105 <  RealType r;
106 <  RealType dist;
107 <  RealType* QBar_lm;
108 <  int nBonds;
109 <  RealSphericalHarmonic sphericalHarmonic;
110 <  
111 <  
112 <  DumpReader reader(info_, dumpFilename_);    
113 <  int nFrames = reader.getNFrames();
114 <
115 <   /*Set the l for the spherical harmonic, it doesn't change*/
116 <        sphericalHarmonic.setL(lNumber_);
117 <
118 <  for (int i = 0; i < nFrames; i += step_) {
119 <    reader.readFrame(i);
120 <    currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
121 <        nBonds = 0;
122 <    
123 <    for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) {
124 <        //change the positions of atoms which belong to the rigidbodies
125 <        for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) {
126 <            rb->updateAtoms();
127 <        }
128 <        
129 <    }      
130 <
131 <      /* Calculate "bonds" and build Q_lm(r) where Q_lm = Y_lm(theta(r),phi(r)) */
132 <      for (std::vector<std::pair<StuntDouble*, StuntDouble*> >::iterator j = sdPairs_.begin(); j != sdPairs_.end(); ++j) {
133 <          Vector3d vec = j->first->getPos() - j->second->getPos();
134 <          currentSnapshot_->wrapVector(vec);
135 < /* The spherical harmonics are wrt any arbitray coordiate sysetm,
136 <  * we choose standard spherical coordinates */
137 <                r = sqrt(pow(vec.x(),2)+pow(vec.y(),2)+pow(vec.z(),2));
138 <                
139 <                /* Check to see if neighbor is in bond cuttoff*/
140 <                if (r<rCut_){          
141 <            theta = atan(vec.y()/vec.x());
142 <            phi = acos(vec.z()/r);
143 <            for(int m = -lNumber_; m <= lNumber_; m++){
144 <                sphericalHarmonic.setM(m);
145 <                QBar_lm(m) += sphericalHarmonic.getValueAt(theta,phi);
146 <            }
147 <            nBonds++;
148 <                }  
149 <      }
150 <      
151 <     /*Normalize Qbar*/
152 <     for (int m = -lNumber_;m <= lNumber_; m++){
153 <      QBar_lm(m) = QBar_lm(m)/nBonds;  
154 <     }
155 <      
156 <    
157 <  }
158 <  
159 <  /*Normalize by number of frames*/
160 <    for (int m = -lNumber_;m <= lNumber_; m++){
161 <      QBar_lm(m) = QBar_lm(m)/nFrames;  
162 <     }
163 <    
164 <    
165 <    
166 <     /* Find second order invariant Q_l*/
167 <    
168 <       for (int m = -lNumber_;m <= lNumber_; m++){
169 <         QSq_l += pow(QBar_lm(m),2);    
170 <        }
171 <     Q_l = sqrt((4*NumericConstant::PI/lNumber_+1)*QSq_l);
172 <    
173 <     /* Find Third Order Invariant W_l*/
174 <     for (int m = -lNumber_;m<= lNumber_;m++){
175 <        
176 <        
177 <     }
178 <    
179 <    
180 <  writeOrderParameter();
181 <  
182 < }
183 <
184 < void BondOrderParameter::initalizeHistogram() {
185 <    std::fill(histogram_.begin(), histogram_.end(), 0);
186 <  }
187 <
188 < void BondOrderParameter::processHistogram() {
189 <
190 <    int nPairs = getNPairs();
191 <    RealType volume = info_->getSnapshotManager()->getCurrentSnapshot()->getVolume();
192 <    RealType pairDensity = nPairs /volume * 2.0;
193 <    RealType pairConstant = ( 4.0 * NumericConstant::PI * pairDensity ) / 3.0;
194 <
195 <    for(int i = 0 ; i < histogram_.size(); ++i){
196 <
197 <      RealType rLower = i * deltaR_;
198 <      RealType rUpper = rLower + deltaR_;
199 <      RealType volSlice = ( rUpper * rUpper * rUpper ) - ( rLower * rLower * rLower );
200 <      RealType nIdeal = volSlice * pairConstant;
201 <
202 <      avgGofr_[i] += histogram_[i] / nIdeal;    
203 <    }
204 <
205 <  }
206 <
207 <  void BondOrderParameter::collectHistogram(StuntDouble* sd1, StuntDouble* sd2) {
208 <
209 <    if (sd1 == sd2) {
210 <      return;
211 <    }
212 <    
213 <    Vector3d pos1 = sd1->getPos();
214 <    Vector3d pos2 = sd2->getPos();
215 <    Vector3d r12 = pos2 - pos1;
216 <    currentSnapshot_->wrapVector(r12);
217 <
218 <    RealType distance = r12.length();
219 <
220 <    if (distance < len_) {
221 <      int whichBin = distance / deltaR_;
222 <      histogram_[whichBin] += 2;
223 <    }
224 <  }
225 <
226 <
227 <
228 <
229 <
230 <
231 < void BondOrderParameter::writeOrderParameter() {
232 <
233 <    std::ofstream os(getOutputFileName().c_str());
234 <    os << "#radial distribution function\n";
235 <    os<< "#selection1: (" << selectionScript1_ << ")\t";
236 <    os << "selection2: (" << selectionScript2_ << ")\n";
237 <    os << "#p2\tdirector_x\tdirector_y\tdiretor_z\tangle(degree)\n";    
238 <
239 <    for (std::size_t i = 0; i < orderParams_.size(); ++i) {
240 <        os <<  orderParams_[i].p2 << "\t"
241 <            <<  orderParams_[i].director[0] << "\t"
242 <            <<  orderParams_[i].director[1] << "\t"
243 <            <<  orderParams_[i].director[2] << "\t"
244 <            <<  orderParams_[i].angle << "\n";
245 <
246 <    }
247 <
248 < }
249 <
250 < }
251 <
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. Acknowledgement of the program authors must be made in any
10 > *    publication of scientific results based in part on use of the
11 > *    program.  An acceptable form of acknowledgement is citation of
12 > *    the article in which the program was described (Matthew
13 > *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14 > *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15 > *    Parallel Simulation Engine for Molecular Dynamics,"
16 > *    J. Comput. Chem. 26, pp. 252-271 (2005))
17 > *
18 > * 2. Redistributions of source code must retain the above copyright
19 > *    notice, this list of conditions and the following disclaimer.
20 > *
21 > * 3. Redistributions in binary form must reproduce the above copyright
22 > *    notice, this list of conditions and the following disclaimer in the
23 > *    documentation and/or other materials provided with the
24 > *    distribution.
25 > *
26 > * This software is provided "AS IS," without a warranty of any
27 > * kind. All express or implied conditions, representations and
28 > * warranties, including any implied warranty of merchantability,
29 > * fitness for a particular purpose or non-infringement, are hereby
30 > * excluded.  The University of Notre Dame and its licensors shall not
31 > * be liable for any damages suffered by licensee as a result of
32 > * using, modifying or distributing the software or its
33 > * derivatives. In no event will the University of Notre Dame or its
34 > * licensors be liable for any lost revenue, profit or data, or for
35 > * direct, indirect, special, consequential, incidental or punitive
36 > * damages, however caused and regardless of the theory of liability,
37 > * arising out of the use of or inability to use software, even if the
38 > * University of Notre Dame has been advised of the possibility of
39 > * such damages.
40 > */
41 >
42 >
43 > /* Creates orientational bond order parameters as outlined by
44 > *     Bond-orientaional order in liquids and glasses, Steinhart,Nelson,Ronchetti
45 > *     Phys Rev B, 28,784,1983
46 > *
47 > */
48 >
49 > #include "applications/staticProps/BondOrderParameter.hpp"
50 > #include "utils/simError.h"
51 > #include "io/DumpReader.hpp"
52 > #include "primitives/Molecule.hpp"
53 > #include "utils/NumericConstant.hpp"
54 > #include "math/SphericalHarmonic.hpp"
55 >
56 > namespace oopse {
57 >
58 >  BondOrderParameter::BondOrderParameter(SimInfo* info,
59 >                                         const std::string& filename,
60 >                                         const std::string& sele,
61 >                                         double rCut, int lNumber, int nbins) : StaticAnalyser(info, filename), selectionScript_(sele), evaluator_(info), seleMan_(info){
62 >    
63 >    setOutputName(getPrefix(filename) + ".bo");
64 >
65 >    evaluator_.loadScriptString(sele);
66 >    if (!evaluator_.isDynamic()) {
67 >      seleMan_.setSelectionSet(evaluator_.evaluate());
68 >    }
69 >
70 >    // Set up cutoff radius and order of the Legendre Polynomial:
71 >
72 >    lNumber_ = lNumber;
73 >    rCut_ = rCut;
74 >    mSize_ = 2*lNumber_+1;  
75 >
76 >    // Q can take values from 0 to 1
77 >
78 >    MinQ_ = 0.0;
79 >    MaxQ_ = 3.0;
80 >    deltaQ_ = (MaxQ_ - MinQ_) / nbins;
81 >    Q_histogram_.resize(nbins);
82 >
83 >    // W_6 for icosahedral clusters is 11 / sqrt(4199) = 0.169754, so we'll
84 >    // use values for MinW_ and MaxW_ that are slightly larger than this:
85 >
86 >    MinW_ = -0.18;
87 >    MaxW_ = 0.18;
88 >    deltaW_ = (MaxW_ - MinW_) / nbins;
89 >    W_histogram_.resize(nbins);
90 >
91 >  }
92 >
93 >  BondOrderParameter::~BondOrderParameter() {
94 >    Q_histogram_.clear();
95 >    W_histogram_.clear();
96 >  }
97 >
98 >  void BondOrderParameter::initalizeHistogram() {
99 >    std::fill(Q_histogram_.begin(), Q_histogram_.end(), 0);
100 >    std::fill(W_histogram_.begin(), W_histogram_.end(), 0);
101 >  }
102 >
103 >  void BondOrderParameter::process() {
104 >    Molecule* mol;
105 >    Atom* atom;
106 >    RigidBody* rb;
107 >    int myIndex;
108 >    SimInfo::MoleculeIterator mi;
109 >    Molecule::RigidBodyIterator rbIter;
110 >    Molecule::AtomIterator ai;
111 >    StuntDouble* sd;
112 >    Vector3d vec;
113 >    RealType costheta;
114 >    RealType phi;
115 >    RealType r;
116 >    RealType dist;
117 >    std::map<int,ComplexType> q_lm;
118 >    std::map<int,ComplexType> QBar_lm;
119 >    RealType QSq_l;
120 >    RealType Q_l;
121 >    ComplexType W_l;
122 >    ComplexType W_l_hat;
123 >    int nBonds, Nbonds;
124 >    SphericalHarmonic sphericalHarmonic;
125 >    int i, j;
126 >    // Make arrays for Wigner3jm
127 >    double* THRCOF = new double[mSize_];
128 >    // Variables for Wigner routine
129 >    double l_ = (double)lNumber_;
130 >    double m1Pass, m2Min, m2Max;
131 >    int error, m1, m2, m3;
132 >
133 >    // Set the l for the spherical harmonic, it doesn't change
134 >    sphericalHarmonic.setL(lNumber_);
135 >
136 >    DumpReader reader(info_, dumpFilename_);    
137 >    int nFrames = reader.getNFrames();
138 >    frameCounter_ = 0;
139 >
140 >    for (int istep = 0; istep < nFrames; istep += step_) {
141 >      reader.readFrame(istep);
142 >      frameCounter_++;
143 >      currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
144 >      
145 >      if (evaluator_.isDynamic()) {
146 >        seleMan_.setSelectionSet(evaluator_.evaluate());
147 >      }
148 >
149 >      // update the positions of atoms which belong to the rigidbodies
150 >
151 >      for (mol = info_->beginMolecule(mi); mol != NULL;
152 >           mol = info_->nextMolecule(mi)) {
153 >        for (rb = mol->beginRigidBody(rbIter); rb != NULL;
154 >             rb = mol->nextRigidBody(rbIter)) {
155 >          rb->updateAtoms();
156 >        }        
157 >      }          
158 >            
159 >      // outer loop is over the selected StuntDoubles:
160 >
161 >      for (sd = seleMan_.beginSelected(i); sd != NULL;
162 >           sd = seleMan_.nextSelected(i)) {
163 >
164 >        myIndex = sd->getGlobalIndex();
165 >        nBonds = 0;
166 >        for (int m = -lNumber_; m <= lNumber_; m++) {
167 >          q_lm[m] = 0.0;
168 >        }
169 >        
170 >        // inner loop is over all other atoms in the system:
171 >        
172 >        for (mol = info_->beginMolecule(mi); mol != NULL;
173 >             mol = info_->nextMolecule(mi)) {
174 >          for (atom = mol->beginAtom(ai); atom != NULL;
175 >               atom = mol->nextAtom(ai)) {
176 >
177 >            if (atom->getGlobalIndex() != myIndex) {
178 >
179 >              vec = sd->getPos() - atom->getPos();      
180 >              currentSnapshot_->wrapVector(vec);
181 >              
182 >              // Calculate "bonds" and build Q_lm(r) where
183 >              //      Q_lm = Y_lm(theta(r),phi(r))                
184 >              // The spherical harmonics are wrt any arbitrary coordinate
185 >              // system, we choose standard spherical coordinates
186 >              
187 >              r = vec.length();
188 >              
189 >              // Check to see if neighbor is in bond cutoff
190 >              
191 >              if (r < rCut_) {
192 >                costheta = vec.z() / r;
193 >                phi = atan2(vec.y(), vec.x());
194 >                
195 >                for(int m = -lNumber_; m <= lNumber_; m++){
196 >                  sphericalHarmonic.setM(m);
197 >                  q_lm[m] += sphericalHarmonic.getValueAt(costheta, phi);
198 >                }
199 >                nBonds++;
200 >              }  
201 >            }
202 >          }
203 >        }
204 >        RealType ql = 0.0;
205 >        for(int m=-lNumber_; m<=lNumber_; m++) {          
206 >          ql += norm(QBar_lm[m]);
207 >        }        
208 >        ql *= 4.0*NumericConstant::PI/(RealType)(2*lNumber_+1);
209 >        collectHistogram(sqrt(ql)/(RealType)nBonds);
210 >
211 >        Nbonds += nBonds;
212 >        for (int m=-lNumber_; m<=lNumber_; m++) {
213 >          QBar_lm[m] += q_lm[m];
214 >        }
215 >      }
216 >    }
217 >
218 >    // Normalize Qbar2
219 >    for (int m = -lNumber_;m <= lNumber_; m++){
220 >      QBar_lm[m] /= Nbonds;
221 >    }
222 >    
223 >    // Find second order invariant Q_l
224 >    
225 >    QSq_l = 0.0;
226 >    for (int m = -lNumber_; m <= lNumber_; m++){
227 >      QSq_l += norm(QBar_lm[m]);
228 >    }
229 >    
230 >    std::cout << "qsl = " << QSq_l << "\n";
231 >    Q_l = sqrt(QSq_l * 4.0 * NumericConstant::PI / (RealType)(2*lNumber_ + 1));
232 >    
233 >    // Find Third Order Invariant W_l
234 >    
235 >    W_l = 0.0;
236 >    for (int m1 = -lNumber_; m1 <= lNumber_; m1++) {
237 >      // Zero work array
238 >      for (int ii = 0; ii < mSize_; ii++){
239 >        THRCOF[ii] = 0.0;
240 >      }
241 >      // Get Wigner coefficients
242 >      m1Pass = (double)m1;
243 >      
244 >      Wigner3jm(&l_, &l_, &l_,
245 >                &m1Pass, &m2Min, &m2Max,
246 >                THRCOF, &mSize_, &error);
247 >      
248 >      for (int mmm = 0; mmm < (int)(m2Max - m2Min); mmm++) {
249 >        m2 = (int)floor(m2Min) + mmm;
250 >        m3 = -m1-m2;
251 >        W_l += THRCOF[mmm] * QBar_lm[m1] * QBar_lm[m2] * QBar_lm[m3];
252 >      }
253 >    }
254 >    
255 >    W_l_hat = W_l / pow(QSq_l, 1.5);              
256 >    
257 >    writeOrderParameter(Q_l, real(W_l_hat));    
258 >  }
259 >
260 >  void BondOrderParameter::collectHistogram(RealType q_l) {
261 >
262 >    if (q_l >= MinQ_ && q_l < MaxQ_) {
263 >      int qbin = (q_l - MinQ_) / deltaQ_;
264 >      Q_histogram_[qbin] += 1;
265 >      Qcount_++;
266 >      sumQ_ += q_l;
267 >      sumQ2_ += q_l * q_l;
268 >    } else {
269 >      sprintf( painCave.errMsg,
270 >               "q_l value outside reasonable range\n");
271 >      painCave.severity = OOPSE_ERROR;
272 >      painCave.isFatal = 1;
273 >      simError();  
274 >    }
275 >
276 >  }  
277 >
278 >
279 >  void BondOrderParameter::writeOrderParameter(RealType ql, RealType Wlhat) {
280 >
281 >    std::ofstream os(getOutputFileName().c_str());
282 >
283 >    if (os.is_open()) {
284 >      
285 >      os << "# Bond Order Parameters\n";
286 >      os << "# selection: (" << selectionScript_ << ")\n";
287 >      os << "# \n";
288 >      os << "# <Q_" << lNumber_ << ">: " << ql << "\n";
289 >      os << "# <W_" << lNumber_ << ">: " << Wlhat << "\n";
290 >      // Normalize by number of frames and write it out:
291 >      for (int i = 0; i < Q_histogram_.size(); ++i) {
292 >        RealType Qval = MinQ_ + (i + 0.5) * deltaQ_;
293 >        osq << Qval << "\t" << (RealType)Q_histogram_[i] / (RealType)Qcount_ << "\n";
294 >      }
295 >
296 >      os.close();
297 >
298 >    } else {
299 >      sprintf(painCave.errMsg, "BondOrderParameter: unable to open %s\n",
300 >              getOutputFileName().c_str());
301 >      painCave.isFatal = 1;
302 >      simError();  
303 >    }
304 >  }
305 > }

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