ViewVC Help
View File | Revision Log | Show Annotations | View Changeset | Root Listing
root/group/trunk/OOPSE-4/src/applications/staticProps/BondOrderParameter.cpp
(Generate patch)

Comparing trunk/OOPSE-4/src/applications/staticProps/BondOrderParameter.cpp (file contents):
Revision 2902 by chuckv, Tue Jun 27 16:36:25 2006 UTC vs.
Revision 3010 by gezelter, Wed Sep 20 22:16:23 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 < #include "applications/staticProps/BondOrderParameter.hpp"
43 < #include "utils/simError.h"
44 < #include "io/DumpReader.hpp"
45 < #include "primitives/Molecule.hpp"
46 < #include "utils/NumericConstant.hpp"
47 < namespace oopse {
48 <
49 <
50 < BondOrderParameter::BondOrderParameter(SimInfo* info, const std::string& filename, const std::string& sele1,
51 < const std::string& sele2, double rCut, int lNumber)
52 <  : StaticAnalyser(info, filename),
53 <    selectionScript1_(sele1), evaluator1_(info),
54 <    seleMan1_(info){
55 <
56 <    setOutputName(getPrefix(filename) + ".p2");
57 <        
58 <    evaluator1_.loadScriptString(sele1);
59 <    evaluator2_.loadScriptString(sele2);
60 <
61 <    if (!evaluator1_.isDynamic()) {
62 <      seleMan1_.setSelectionSet(evaluator1_.evaluate());
63 <    }else {
64 <        sprintf( painCave.errMsg,
65 <                 "--sele1 must be static selection\n");
66 <        painCave.severity = OOPSE_ERROR;
67 <        painCave.isFatal = 1;
68 <        simError();  
69 <    }
70 <
71 <
72 <  int i;
73 <  int j;
74 <  StuntDouble* sd1;
75 <  StuntDouble* sd2;
76 <  for (sd1 = seleMan1_.beginSelected(i), sd2 = seleMan1_.beginSelected(j);
77 <     sd1 != NULL && sd2 != NULL;
78 <     sd1 = seleMan1_.nextSelected(i), sd2 = seleMan2_.nextSelected(j)) {
79 <
80 <     sdPairs_.push_back(std::make_pair(sd1, sd2));
81 <  }
82 <
83 <    
84 <  }
85 <
86 < void BondOrderParameter::process() {
87 <  Molecule* mol;
88 <  RigidBody* rb;
89 <  SimInfo::MoleculeIterator mi;
90 <  Molecule::RigidBodyIterator rbIter;
91 <  
92 <  DumpReader reader(info_, dumpFilename_);    
93 <  int nFrames = reader.getNFrames();
94 <
95 <  for (int i = 0; i < nFrames; i += step_) {
96 <    reader.readFrame(i);
97 <    currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
98 <
99 <    
100 <    for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) {
101 <        //change the positions of atoms which belong to the rigidbodies
102 <        for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) {
103 <            rb->updateAtoms();
104 <        }
105 <        
106 <    }      
107 <
108 <      Mat3x3d orderTensor(0.0);
109 <      for (std::vector<std::pair<StuntDouble*, StuntDouble*> >::iterator j = sdPairs_.begin(); j != sdPairs_.end(); ++j) {
110 <          Vector3d vec = j->first->getPos() - j->second->getPos();
111 <          currentSnapshot_->wrapVector(vec);
112 <          vec.normalize();
113 <          orderTensor +=outProduct(vec, vec);
114 <      }
115 <      
116 <      orderTensor /= sdPairs_.size();
117 <      orderTensor -= (RealType)(1.0/3.0) * Mat3x3d::identity();  
118 <      
119 <      Vector3d eigenvalues;
120 <      Mat3x3d eigenvectors;    
121 <      Mat3x3d::diagonalize(orderTensor, eigenvalues, eigenvectors);
122 <      
123 <      int which;
124 <      RealType maxEval = 0.0;
125 <      for(int k = 0; k< 3; k++){
126 <        if(fabs(eigenvalues[k]) > maxEval){
127 <          which = k;
128 <          maxEval = fabs(eigenvalues[k]);
129 <        }
130 <      }
131 <      RealType p2 = 1.5 * maxEval;
132 <      
133 <      //the eigen vector is already normalized in SquareMatrix3::diagonalize
134 <      Vector3d director = eigenvectors.getColumn(which);
135 <      if (director[0] < 0) {
136 <          director.negate();
137 <      }  
138 <
139 <      RealType angle = 0.0;
140 <      for (std::vector<std::pair<StuntDouble*, StuntDouble*> >::iterator j = sdPairs_.begin(); j != sdPairs_.end(); ++j) {
141 <          Vector3d vec = j->first->getPos() - j->second->getPos();
142 <          currentSnapshot_->wrapVector(vec);
143 <          vec.normalize();
144 <
145 <          angle += acos(dot(vec, director)) ;
146 <      }
147 <      angle = angle / (sdPairs_.size() * NumericConstant::PI) * 180.0;
148 <
149 <       OrderParam param;
150 <       param.p2 = p2;
151 <       param.director = director;
152 <       param.angle = angle;
153 <
154 <        orderParams_.push_back(param);      
155 <    
156 <  }
157 <
158 <  writeP2();
159 <  
160 < }
161 <
162 < void BondOrderParameter::writeOrderParameter() {
163 <
164 <    std::ofstream os(getOutputFileName().c_str());
165 <    os << "#radial distribution function\n";
166 <    os<< "#selection1: (" << selectionScript1_ << ")\t";
167 <    os << "selection2: (" << selectionScript2_ << ")\n";
168 <    os << "#p2\tdirector_x\tdirector_y\tdiretor_z\tangle(degree)\n";    
169 <
170 <    for (std::size_t i = 0; i < orderParams_.size(); ++i) {
171 <        os <<  orderParams_[i].p2 << "\t"
172 <            <<  orderParams_[i].director[0] << "\t"
173 <            <<  orderParams_[i].director[1] << "\t"
174 <            <<  orderParams_[i].director[2] << "\t"
175 <            <<  orderParams_[i].angle << "\n";
176 <
177 <    }
178 <
179 < }
180 <
181 < }
182 <
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_ = 1.0;
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 >    SimInfo::MoleculeIterator mi;
108 >    Molecule::RigidBodyIterator rbIter;
109 >    Molecule::AtomIterator ai;
110 >    StuntDouble* sd;
111 >    RealType costheta;
112 >    RealType phi;
113 >    RealType r;
114 >    RealType dist;
115 >    std::map<int, ComplexType> QBar_lm;
116 >    RealType QSq_l;
117 >    RealType Q_l;
118 >    int nBonds;
119 >    SphericalHarmonic sphericalHarmonic;
120 >    int i, j;
121 >  
122 >    // Set the l for the spherical harmonic, it doesn't change
123 >    sphericalHarmonic.setL(lNumber_);
124 >
125 >
126 >    DumpReader reader(info_, dumpFilename_);    
127 >    int nFrames = reader.getNFrames();
128 >    frameCounter_ = 0;
129 >
130 >    for (int istep = 0; istep < nFrames; istep += step_) {
131 >      reader.readFrame(istep);
132 >      frameCounter_++;
133 >      currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
134 >      
135 >      if (evaluator_.isDynamic()) {
136 >        seleMan_.setSelectionSet(evaluator_.evaluate());
137 >      }
138 >
139 >      // update the positions of atoms which belong to the rigidbodies
140 >
141 >      for (mol = info_->beginMolecule(mi); mol != NULL;
142 >           mol = info_->nextMolecule(mi)) {
143 >        for (rb = mol->beginRigidBody(rbIter); rb != NULL;
144 >             rb = mol->nextRigidBody(rbIter)) {
145 >          rb->updateAtoms();
146 >        }        
147 >      }      
148 >      
149 >      // outer loop is over the selected StuntDoubles:
150 >
151 >      for (sd = seleMan_.beginSelected(i); sd != NULL;
152 >           sd = seleMan_.nextSelected(i)) {
153 >
154 >        // For this central atom, zero out nBonds and QBar_lm
155 >
156 >        nBonds = 0;
157 >      
158 >        for (int m = -lNumber_; m <= lNumber_; m++) {
159 >          QBar_lm[m] = 0.0;
160 >        }
161 >        
162 >        // inner loop is over all other atoms in the system:
163 >        
164 >        for (mol = info_->beginMolecule(mi); mol != NULL;
165 >             mol = info_->nextMolecule(mi)) {
166 >          for (atom = mol->beginAtom(ai); atom != NULL;
167 >               atom = mol->nextAtom(ai)) {
168 >
169 >
170 >            Vector3d vec = sd->getPos() - atom->getPos();      
171 >            currentSnapshot_->wrapVector(vec);
172 >            
173 >            // Calculate "bonds" and build Q_lm(r) where
174 >            //      Q_lm = Y_lm(theta(r),phi(r))                
175 >            // The spherical harmonics are wrt any arbitrary coordinate
176 >            // system, we choose standard spherical coordinates
177 >            
178 >            r = sqrt(pow(vec.x(),2)+pow(vec.y(),2)+pow(vec.z(),2));
179 >            
180 >            // Check to see if neighbor is in bond cutoff
181 >            
182 >            if (r < rCut_) {            
183 >              costheta = vec.z() / r;
184 >              phi = atan2(vec.y(), vec.x());
185 >              
186 >              for(int m = -lNumber_; m <= lNumber_; m++){
187 >                sphericalHarmonic.setM(m);
188 >                QBar_lm[m] += sphericalHarmonic.getValueAt(costheta,phi);
189 >              }
190 >              nBonds++;
191 >            }  
192 >          }
193 >        }
194 >        
195 >        // Normalize Qbar2
196 >        for (int m = -lNumber_;m <= lNumber_; m++){
197 >          QBar_lm[m] /= nBonds;
198 >        }
199 >
200 >        // Find second order invariant Q_l
201 >
202 >        QSq_l = 0.0;
203 >        for (int m = -lNumber_; m <= lNumber_; m++){
204 >          QSq_l += norm(QBar_lm[m]);
205 >        }
206 >        Q_l = sqrt(QSq_l*(4.0 * NumericConstant::PI / (2.0*(RealType)lNumber_ + 1)));
207 >    
208 >        // Find Third Order Invariant W_l
209 >
210 >        // Make arrays for Wigner3jm
211 >        double* THRCOF = new double[mSize_];
212 >        // Variables for Wigner routine
213 >        double l_ = (double)lNumber_;
214 >        double m1Pass, m2Min, m2Max;
215 >        int error, m1, m2, m3;
216 >
217 >        ComplexType W_l;
218 >        ComplexType W_l_hat;
219 >        W_l = 0.0;
220 >        for (int m1 = -lNumber_; m1 <= lNumber_; m1++) {
221 >          // Zero work array
222 >          for (int ii = 0; ii < mSize_; ii++){
223 >            THRCOF[i] = 0.0;
224 >          }
225 >          // Get Wigner coefficients
226 >          m1Pass = (double)m1;
227 >          Wigner3jm(&l_, &l_, &l_, &m1Pass, &m2Min, &m2Max, THRCOF, &mSize_, &error);
228 >          for (int m_index = 1; i < (int)(m2Max - m2Min-1.0); m_index++) {
229 >            m2 = floor(m2Min) + m_index - 1;
230 >            m3 = -m1-m2;
231 >            W_l += THRCOF[m_index]*QBar_lm[m1+lNumber_]*QBar_lm[m2+lNumber_]*QBar_lm[m3+lNumber_];
232 >          }
233 >        }
234 >
235 >        W_l_hat = W_l / pow(QSq_l, 1.5);
236 >
237 >        // accumulate histogram data for Q_l and W_l_hat:
238 >
239 >        collectHistogram(Q_l, real(W_l_hat));
240 >                
241 >      }
242 >    }
243 >    
244 >    writeOrderParameter();
245 >    
246 >  }
247 >
248 >
249 >  void BondOrderParameter::collectHistogram(RealType Q_l, RealType W_l_hat) {
250 >
251 >    if (Q_l >= MinQ_ && Q_l < MaxQ_) {
252 >      int qbin = (Q_l - MinQ_) / deltaQ_;
253 >      Q_histogram_[qbin] += 1;
254 >      Qcount_++;
255 >      sumQ_ += Q_l;
256 >      sumQ2_ += Q_l * Q_l;
257 >    } else {
258 >      sprintf( painCave.errMsg,
259 >               "Q_l value outside reasonable range\n");
260 >      painCave.severity = OOPSE_ERROR;
261 >      painCave.isFatal = 1;
262 >      simError();  
263 >    }
264 >
265 >    if (W_l_hat >= MinW_ && W_l_hat < MaxW_) {
266 >      int wbin = (W_l_hat - MinW_) / deltaW_;
267 >      W_histogram_[wbin] += 1;
268 >      Wcount_++;
269 >      sumW_  += W_l_hat;
270 >      sumW2_ += W_l_hat*W_l_hat;
271 >    } else {
272 >      sprintf( painCave.errMsg,
273 >               "W_l_hat value outside reasonable range\n");
274 >      painCave.severity = OOPSE_ERROR;
275 >      painCave.isFatal = 1;
276 >      simError();  
277 >    }
278 >  }  
279 >
280 >  void BondOrderParameter::writeOrderParameter() {
281 >
282 >    std::ofstream osq((getOutputFileName() + "q").c_str());
283 >
284 >    if (osq.is_open()) {
285 >
286 >      RealType qAvg = sumQ_ / (RealType) Qcount_;
287 >      RealType qStdDev = sumQ2_ / (RealType) Qcount_ - qAvg*qAvg;
288 >      
289 >      osq << "# Bond Order Parameter Q_" << lNumber_ << "\n";
290 >      osq << "# selection: (" << selectionScript_ << ")\n";
291 >      osq << "# <Q_" << lNumber_ << ">: " << qAvg << "\n";
292 >      osq << "# std. dev.: " << qStdDev << "\n";
293 >      
294 >      // Normalize by number of frames and write it out:
295 >      for (int i = 0; i < Q_histogram_.size(); ++i) {
296 >        RealType Qval = MinQ_ + (i + 0.5) * deltaQ_;
297 >        osq << Qval << "\t" << Q_histogram_[i] / frameCounter_ << "\n";
298 >      }
299 >      
300 >      osq.close();
301 >    } else {
302 >      sprintf(painCave.errMsg, "BondOrderParameter: unable to open %s\n",
303 >              (getOutputFileName() + "q").c_str());
304 >      painCave.isFatal = 1;
305 >      simError();  
306 >    }
307 >
308 >    std::ofstream osw((getOutputFileName() + "w").c_str());
309 >
310 >    if (osw.is_open()) {
311 >
312 >      RealType wAvg = sumW_ / (RealType) Wcount_;
313 >      RealType wStdDev = sumW2_ / (RealType) Wcount_ - wAvg*wAvg;
314 >      
315 >      osw << "# Bond Order Parameter W_" << lNumber_ << "\n";
316 >      osw << "# selection: (" << selectionScript_ << ")\n";
317 >      osw << "# <W_" << lNumber_ << ">: " << wAvg << "\n";
318 >      osw << "# std. dev.: " << wStdDev << "\n";
319 >      
320 >      // Normalize by number of frames and write it out:
321 >      for (int i = 0; i < W_histogram_.size(); ++i) {
322 >        RealType Wval = MinW_ + (i + 0.5) * deltaW_;
323 >        osw << Wval << "\t" << W_histogram_[i] / frameCounter_ << "\n";
324 >      }
325 >      
326 >      osw.close();
327 >    } else {
328 >      sprintf(painCave.errMsg, "BondOrderParameter: unable to open %s\n",
329 >              (getOutputFileName() + "w").c_str());
330 >      painCave.isFatal = 1;
331 >      simError();  
332 >    }
333 >  }
334 > }

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines