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root/OpenMD/branches/development/src/applications/staticProps/BOPofR.cpp
Revision: 1665
Committed: Tue Nov 22 20:38:56 2011 UTC (13 years, 5 months ago) by gezelter
File size: 11575 byte(s)
Log Message:
updated copyright notices

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# User Rev Content
1 chuckv 1128 /*
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 chuckv 1128 * notice, this list of conditions and the following disclaimer.
11     *
12 gezelter 1390 * 2. Redistributions in binary form must reproduce the above copyright
13 chuckv 1128 * 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 gezelter 1390 * 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 gezelter 1665 * [4] Kuang & Gezelter, J. Chem. Phys. 133, 164101 (2010).
40     * [4] , Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011). *
41 chuckv 1128 * Created by J. Daniel Gezelter on 09/26/06.
42     * @author J. Daniel Gezelter
43 gezelter 1442 * @version $Id$
44 chuckv 1128 *
45     */
46    
47     #include "applications/staticProps/BOPofR.hpp"
48     #include "utils/simError.h"
49     #include "io/DumpReader.hpp"
50     #include "primitives/Molecule.hpp"
51     #include "utils/NumericConstant.hpp"
52 gezelter 1600 #include "math/Wigner3jm.hpp"
53 chuckv 1128
54 gezelter 1600 using namespace MATPACK;
55 gezelter 1390 namespace OpenMD {
56 chuckv 1128
57     BOPofR::BOPofR(SimInfo* info, const std::string& filename, const std::string& sele, double rCut,
58     int nbins, RealType len) : StaticAnalyser(info, filename), selectionScript_(sele), evaluator_(info), seleMan_(info){
59    
60     setOutputName(getPrefix(filename) + ".bo");
61    
62     evaluator_.loadScriptString(sele);
63     if (!evaluator_.isDynamic()) {
64     seleMan_.setSelectionSet(evaluator_.evaluate());
65     }
66    
67     // Set up cutoff radius and order of the Legendre Polynomial:
68    
69     rCut_ = rCut;
70     nBins_ = nbins;
71     len_ = len;
72    
73     deltaR_ = len_/nBins_;
74     RCount_.resize(nBins_);
75     WofR_.resize(nBins_);
76     QofR_.resize(nBins_);
77 chuckv 1137
78     for (int i = 0; i < nBins_; i++){
79     RCount_[i] = 0;
80     WofR_[i] = 0;
81     QofR_[i] = 0;
82     }
83 chuckv 1128
84     // Make arrays for Wigner3jm
85 gezelter 1600 RealType* THRCOF = new RealType[2*lMax_+1];
86 chuckv 1128 // Variables for Wigner routine
87 gezelter 1600 RealType lPass, m1Pass, m2m, m2M;
88 chuckv 1128 int error, mSize;
89     mSize = 2*lMax_+1;
90    
91     for (int l = 0; l <= lMax_; l++) {
92 gezelter 1600 lPass = (RealType)l;
93 chuckv 1128 for (int m1 = -l; m1 <= l; m1++) {
94 gezelter 1600 m1Pass = (RealType)m1;
95 chuckv 1128
96     std::pair<int,int> lm = std::make_pair(l, m1);
97    
98     // Zero work array
99     for (int ii = 0; ii < 2*l + 1; ii++){
100     THRCOF[ii] = 0.0;
101     }
102    
103     // Get Wigner coefficients
104 gezelter 1600 Wigner3jm(lPass, lPass, lPass,
105     m1Pass, m2m, m2M,
106     THRCOF, mSize, error);
107 chuckv 1128
108     m2Min[lm] = (int)floor(m2m);
109     m2Max[lm] = (int)floor(m2M);
110    
111     for (int mmm = 0; mmm <= (int)(m2M - m2m); mmm++) {
112     w3j[lm].push_back(THRCOF[mmm]);
113     }
114     }
115     }
116    
117     delete [] THRCOF;
118 chuckv 1137 THRCOF = NULL;
119 chuckv 1128
120     }
121    
122     BOPofR::~BOPofR() {
123     /*
124     std::cerr << "Freeing stuff" << std::endl;
125     for (int l = 0; l <= lMax_; l++) {
126     for (int m = -l; m <= l; m++) {
127     w3j[std::make_pair(l,m)].clear();
128     }
129     }
130     std::cerr << "w3j made free...." << std::endl;
131     for (int bin = 0; bin < nBins_; bin++) {
132     QofR_[bin].clear();
133     WofR_[bin].clear();
134     RCount_[bin].clear();
135     }
136     std::cout << "R arrays made free...." << std::endl;
137     w3j.clear();
138     m2Min.clear();
139     m2Max.clear();
140     RCount_.clear();
141     WofR_.clear();
142     QofR_.clear();
143     */
144     }
145    
146    
147     void BOPofR::initalizeHistogram() {
148 chuckv 1137 for (int i = 0; i < nBins_; i++){
149     RCount_[i] = 0;
150     WofR_[i] = 0;
151     QofR_[i] = 0;
152     }
153 chuckv 1128 }
154    
155    
156     void BOPofR::process() {
157     Molecule* mol;
158     Atom* atom;
159     RigidBody* rb;
160     int myIndex;
161     SimInfo::MoleculeIterator mi;
162     Molecule::RigidBodyIterator rbIter;
163     Molecule::AtomIterator ai;
164     StuntDouble* sd;
165     Vector3d vec;
166     RealType costheta;
167     RealType phi;
168     RealType r;
169     RealType dist;
170     Vector3d rCOM;
171     RealType distCOM;
172     Vector3d pos;
173     Vector3d CenterOfMass;
174     std::map<std::pair<int,int>,ComplexType> q;
175     std::vector<RealType> q_l;
176     std::vector<RealType> q2;
177     std::vector<ComplexType> w;
178     std::vector<ComplexType> w_hat;
179     std::map<std::pair<int,int>,ComplexType> QBar;
180     std::vector<RealType> Q2;
181     std::vector<RealType> Q;
182     std::vector<ComplexType> W;
183     std::vector<ComplexType> W_hat;
184     int nBonds, Nbonds;
185     SphericalHarmonic sphericalHarmonic;
186     int i, j;
187    
188     DumpReader reader(info_, dumpFilename_);
189     int nFrames = reader.getNFrames();
190     frameCounter_ = 0;
191    
192     q_l.resize(lMax_+1);
193     q2.resize(lMax_+1);
194     w.resize(lMax_+1);
195     w_hat.resize(lMax_+1);
196    
197     Q2.resize(lMax_+1);
198     Q.resize(lMax_+1);
199     W.resize(lMax_+1);
200     W_hat.resize(lMax_+1);
201     Nbonds = 0;
202    
203     for (int istep = 0; istep < nFrames; istep += step_) {
204     reader.readFrame(istep);
205     frameCounter_++;
206     currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
207     CenterOfMass = info_->getCom();
208     if (evaluator_.isDynamic()) {
209     seleMan_.setSelectionSet(evaluator_.evaluate());
210     }
211    
212     // update the positions of atoms which belong to the rigidbodies
213    
214     for (mol = info_->beginMolecule(mi); mol != NULL;
215     mol = info_->nextMolecule(mi)) {
216     for (rb = mol->beginRigidBody(rbIter); rb != NULL;
217     rb = mol->nextRigidBody(rbIter)) {
218     rb->updateAtoms();
219     }
220     }
221    
222     // outer loop is over the selected StuntDoubles:
223    
224     for (sd = seleMan_.beginSelected(i); sd != NULL;
225     sd = seleMan_.nextSelected(i)) {
226    
227     myIndex = sd->getGlobalIndex();
228    
229     nBonds = 0;
230    
231     for (int l = 0; l <= lMax_; l++) {
232     for (int m = -l; m <= l; m++) {
233     q[std::make_pair(l,m)] = 0.0;
234     }
235     }
236     pos = sd->getPos();
237     rCOM = CenterOfMass - pos;
238     if (usePeriodicBoundaryConditions_)
239     currentSnapshot_->wrapVector(rCOM);
240     distCOM = rCOM.length();
241    
242     // inner loop is over all other atoms in the system:
243    
244     for (mol = info_->beginMolecule(mi); mol != NULL;
245     mol = info_->nextMolecule(mi)) {
246     for (atom = mol->beginAtom(ai); atom != NULL;
247     atom = mol->nextAtom(ai)) {
248    
249     if (atom->getGlobalIndex() != myIndex) {
250     vec = pos - atom->getPos();
251    
252     if (usePeriodicBoundaryConditions_)
253     currentSnapshot_->wrapVector(vec);
254    
255     // Calculate "bonds" and build Q_lm(r) where
256     // Q_lm = Y_lm(theta(r),phi(r))
257     // The spherical harmonics are wrt any arbitrary coordinate
258     // system, we choose standard spherical coordinates
259    
260     r = vec.length();
261    
262     // Check to see if neighbor is in bond cutoff
263    
264     if (r < rCut_) {
265     costheta = vec.z() / r;
266     phi = atan2(vec.y(), vec.x());
267    
268     for (int l = 0; l <= lMax_; l++) {
269     sphericalHarmonic.setL(l);
270     for(int m = -l; m <= l; m++){
271     sphericalHarmonic.setM(m);
272     q[std::make_pair(l,m)] += sphericalHarmonic.getValueAt(costheta, phi);
273     }
274     }
275     nBonds++;
276     }
277     }
278     }
279     }
280    
281    
282     for (int l = 0; l <= lMax_; l++) {
283     q2[l] = 0.0;
284     for (int m = -l; m <= l; m++){
285     q[std::make_pair(l,m)] /= (RealType)nBonds;
286     q2[l] += norm(q[std::make_pair(l,m)]);
287     }
288     q_l[l] = sqrt(q2[l] * 4.0 * NumericConstant::PI / (RealType)(2*l + 1));
289     }
290    
291     // Find Third Order Invariant W_l
292    
293     for (int l = 0; l <= lMax_; l++) {
294     w[l] = 0.0;
295     for (int m1 = -l; m1 <= l; m1++) {
296     std::pair<int,int> lm = std::make_pair(l, m1);
297     for (int mmm = 0; mmm <= (m2Max[lm] - m2Min[lm]); mmm++) {
298     int m2 = m2Min[lm] + mmm;
299     int m3 = -m1-m2;
300     w[l] += w3j[lm][mmm] * q[lm] *
301     q[std::make_pair(l,m2)] * q[std::make_pair(l,m3)];
302     }
303     }
304    
305     w_hat[l] = w[l] / pow(q2[l], 1.5);
306     }
307    
308     collectHistogram(q_l, w_hat, distCOM);
309 chuckv 1137
310 chuckv 1194 // printf( "%s %18.10g %18.10g %18.10g %18.10g \n", sd->getType().c_str(),pos[0],pos[1],pos[2],real(w_hat[6]));
311 chuckv 1137
312 chuckv 1128 }
313     }
314    
315     writeOrderParameter();
316     }
317    
318     void BOPofR::collectHistogram(std::vector<RealType> q,
319     std::vector<ComplexType> what, RealType distCOM) {
320    
321     if ( distCOM < len_){
322     // Figure out where this distance goes...
323     int whichBin = distCOM / deltaR_;
324 chuckv 1137 RCount_[whichBin]++;
325    
326     if(real(what[6]) < -0.15){
327     WofR_[whichBin]++;
328 chuckv 1128 }
329 chuckv 1137 if(q[6] > 0.5){
330     QofR_[whichBin]++;
331     }
332 chuckv 1128 }
333    
334     }
335    
336     void BOPofR::writeOrderParameter() {
337    
338     std::ofstream osq((getOutputFileName() + "qr").c_str());
339    
340     if (osq.is_open()) {
341    
342     // Normalize by number of frames and write it out:
343    
344     for (int i = 0; i < nBins_; ++i) {
345     RealType Rval = (i + 0.5) * deltaR_;
346     osq << Rval;
347 chuckv 1137 if (RCount_[i] == 0){
348     osq << "\t" << 0;
349     osq << "\n";
350     }else{
351     osq << "\t" << (RealType)QofR_[i]/(RealType)RCount_[i];
352     osq << "\n";
353     }
354 chuckv 1128 }
355    
356     osq.close();
357    
358     } else {
359     sprintf(painCave.errMsg, "BOPofR: unable to open %s\n",
360     (getOutputFileName() + "q").c_str());
361     painCave.isFatal = 1;
362     simError();
363     }
364    
365     std::ofstream osw((getOutputFileName() + "wr").c_str());
366    
367     if (osw.is_open()) {
368     // Normalize by number of frames and write it out:
369     for (int i = 0; i < nBins_; ++i) {
370     RealType Rval = deltaR_ * (i + 0.5);
371     osw << Rval;
372 chuckv 1137 if (RCount_[i] == 0){
373     osw << "\t" << 0;
374     osw << "\n";
375     }else{
376     osw << "\t" << (RealType)WofR_[i]/(RealType)RCount_[i];
377     osw << "\n";
378     }
379 chuckv 1128 }
380    
381     osw.close();
382     } else {
383     sprintf(painCave.errMsg, "BOPofR: unable to open %s\n",
384     (getOutputFileName() + "w").c_str());
385     painCave.isFatal = 1;
386     simError();
387    
388     }
389    
390     }
391     }

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