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/* |
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* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved. |
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* |
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* The University of Notre Dame grants you ("Licensee") a |
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* non-exclusive, royalty free, license to use, modify and |
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* redistribute this software in source and binary code form, provided |
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* that the following conditions are met: |
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* |
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* 1. Acknowledgement of the program authors must be made in any |
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* publication of scientific results based in part on use of the |
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* program. An acceptable form of acknowledgement is citation of |
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* the article in which the program was described (Matthew |
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* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher |
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* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented |
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* Parallel Simulation Engine for Molecular Dynamics," |
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* J. Comput. Chem. 26, pp. 252-271 (2005)) |
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* |
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* 2. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 3. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the |
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* distribution. |
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* |
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* This software is provided "AS IS," without a warranty of any |
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* kind. All express or implied conditions, representations and |
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* warranties, including any implied warranty of merchantability, |
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* fitness for a particular purpose or non-infringement, are hereby |
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* excluded. The University of Notre Dame and its licensors shall not |
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* be liable for any damages suffered by licensee as a result of |
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* using, modifying or distributing the software or its |
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* derivatives. In no event will the University of Notre Dame or its |
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* licensors be liable for any lost revenue, profit or data, or for |
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* direct, indirect, special, consequential, incidental or punitive |
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* damages, however caused and regardless of the theory of liability, |
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* arising out of the use of or inability to use software, even if the |
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* University of Notre Dame has been advised of the possibility of |
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* such damages. |
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*/ |
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#include "applications/dynamicProps/DirectionalRCorrFunc.hpp" |
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namespace oopse { |
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DirectionalRCorrFunc::DirectionalRCorrFunc(SimInfo* info, const std::string& filename, const std::string& sele1, const std::string& sele2) |
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: ParticleTimeCorrFunc(info, filename, sele1, sele2, DataStorage::dslPosition){ |
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setCorrFuncType("DirectionalRCorrFunc"); |
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setOutputName(getPrefix(dumpFilename_) + ".drcorr"); |
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histogram_.resize(nTimeBins_); |
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count_.resize(nTimeBins_); |
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nSelected_ = seleMan1_.getSelectionCount(); |
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assert( nSelected_ == seleMan2_.getSelectionCount()); |
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} |
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void DirectionalRCorrFunc::correlateFrames(int frame1, int frame2) { |
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Snapshot* snapshot1 = bsMan_->getSnapshot(frame1); |
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Snapshot* snapshot2 = bsMan_->getSnapshot(frame2); |
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assert(snapshot1 && snapshot2); |
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RealType time1 = snapshot1->getTime(); |
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RealType time2 = snapshot2->getTime(); |
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int timeBin = int ((time2 - time1) /deltaTime_ + 0.5); |
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count_[timeBin] += nSelected_; |
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int i; |
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int j; |
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StuntDouble* sd1; |
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StuntDouble* sd2; |
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for (sd1 = seleMan1_.beginSelected(i), sd2 = seleMan2_.beginSelected(j); |
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sd1 != NULL && sd2 != NULL; |
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sd1 = seleMan1_.nextSelected(i), sd2 = seleMan2_.nextSelected(j)) { |
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Vector3d corrVals = calcCorrVals(frame1, frame2, sd1, sd2); |
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histogram_[timeBin] += corrVals; |
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} |
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} |
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void DirectionalRCorrFunc::postCorrelate() { |
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for (int i =0 ; i < nTimeBins_; ++i) { |
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if (count_[i] > 0) { |
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histogram_[i] /= count_[i]; |
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} |
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} |
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} |
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void DirectionalRCorrFunc::preCorrelate() { |
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// Fill the histogram with empty Vector3d: |
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std::fill(histogram_.begin(), histogram_.end(), Vector3d(0.0)); |
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// count array set to zero |
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std::fill(count_.begin(), count_.end(), 0); |
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} |
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Vector3d DirectionalRCorrFunc::calcCorrVals(int frame1, int frame2, StuntDouble* sd1, StuntDouble* sd2) { |
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Vector3d r1 = sd1->getPos(frame1); |
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Vector3d r2 = sd2->getPos(frame2); |
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Vector3d u1 = sd1->getA(frame1).getColumn(2); |
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RealType rsq = (r2-r1).lengthSquare(); |
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RealType rpar = dot( r2-r1, u1); |
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RealType rpar2 = rpar*rpar; |
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RealType rperp2 = rsq - rpar2; |
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return Vector3d(rsq, rpar2, rperp2); |
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} |
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void DirectionalRCorrFunc::writeCorrelate() { |
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std::ofstream ofs(getOutputFileName().c_str()); |
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if (ofs.is_open()) { |
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ofs << "#" << getCorrFuncType() << "\n"; |
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ofs << "#time\tr2\trparallel\trperpendicular\n"; |
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for (int i = 0; i < nTimeBins_; ++i) { |
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ofs << time_[i] << "\t" << |
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histogram_[i](0) << "\t" << |
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histogram_[i](1) << "\t" << |
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histogram_[i](2) << "\t" << "\n"; |
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} |
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} else { |
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sprintf(painCave.errMsg, |
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"DirectionalRCorrFunc::writeCorrelate Error: fail to open %s\n", getOutputFileName().c_str()); |
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painCave.isFatal = 1; |
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simError(); |
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} |
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ofs.close(); |
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} |
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} |