applications/staticProps/GofR.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. Acknowledgement of the program authors must be made in any
 *    publication of scientific results based in part on use of the
 *    program.  An acceptable form of acknowledgement is citation of
 *    the article in which the program was described (Matthew
 *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
 *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
 *    Parallel Simulation Engine for Molecular Dynamics,"
 *    J. Comput. Chem. 26, pp. 252-271 (2005))
 *
 * 2. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 3. 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.
 */

#include <algorithm>
#include <fstream>
#include "applications/staticProps/GofR.hpp"
#include "utils/simError.h"

namespace oopse {

GofR::GofR(SimInfo* info, const std::string& filename, const std::string& sele1, const std::string& sele2)
    : RadialDistrFunc(info, filename, sele1, sele2){

    deltaR_ = len_ /nRBins_;
    
    histogram_.resize(nRBins_);
    avgGofr_.resize(nRBins_);

    setOutputName(getPrefix(filename) + ".gr");
}


void GofR::preProcess() {
    std::fill(avgGofr_.begin(), avgGofr_.end(), 0.0);    
}

void GofR::initalizeHistogram() {
    npairs_ = 0;
    std::fill(histogram_.begin(), histogram_.end(), 0);
}


void GofR::processHistogram() {

    int nRealPairs = getNRealPairs();
    double volume = info_->getSnapshotManager()->getCurrentSnapshot()->getVolume();
    double pairDensity = nRealPairs /volume;
    double pairConstant = ( 4.0 * NumericConstant::PI * pairDensity ) / 3.0;

    for(int i = 0 ; i < histogram_.size(); ++i){

        double rLower = i * deltaR_;
        double rUpper = rLower + deltaR_;
        double volSlice = ( rUpper * rUpper * rUpper ) - ( rLower * rLower * rLower );
        double nIdeal = volSlice * pairConstant;

        avgGofr_[i] += histogram_[i] / nIdeal;    
    }

}

void GofR::collectHistogram(StuntDouble* sd1, StuntDouble* sd2) {

    if (sd1 == sd2) {
        return;
    }
    
    Vector3d pos1 = sd1->getPos();
    Vector3d pos2 = sd2->getPos();
    Vector3d r12 = pos1 - pos2;
    currentSnapshot_->wrapVector(r12);

    double distance = r12.length();

    if (distance < len_) {
        int whichBin = distance / deltaR_;
        ++histogram_[whichBin];
        ++npairs_;
    }
}


void GofR::writeRdf() {
    std::ofstream rdfStream(outputFilename_.c_str());
    if (rdfStream.is_open()) {
        rdfStream << "#radial distribution function\n";
        rdfStream << "#selection1: (" << selectionScript1_ << ")\t";
        rdfStream << "selection2: (" << selectionScript2_ << ")\n";
        rdfStream << "#r\tcorrValue\n";
        for (int i = 0; i < avgGofr_.size(); ++i) {
            double r = deltaR_ * (i + 0.5);
            rdfStream << r << "\t" << avgGofr_[i]/nProcessed_ << "\n";
        }
        
    } else {


    }

    rdfStream.close();
}

}

Revision:	2031
Committed:	Tue Feb 15 17:11:35 2005 UTC (19 years, 5 months ago) by tim
File size:	4326 byte(s)
Log Message:	(1) adding #ifdef __RWSTD to make sun compiler happy (2) fix pair density calculation problem when two selections intersect with each other
#	User	Rev	Content
1	tim	1990	/*
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 <algorithm>
43			#include <fstream>
44			#include "applications/staticProps/GofR.hpp"
45	tim	1991	#include "utils/simError.h"
46	tim	1990
47			namespace oopse {
48
49	tim	1995	GofR::GofR(SimInfo* info, const std::string& filename, const std::string& sele1, const std::string& sele2)
50	tim	1994	: RadialDistrFunc(info, filename, sele1, sele2){
51	tim	1990
52	tim	1994	deltaR_ = len_ /nRBins_;
53
54			histogram_.resize(nRBins_);
55			avgGofr_.resize(nRBins_);
56	tim	1995
57			setOutputName(getPrefix(filename) + ".gr");
58	tim	1990	}
59
60
61			void GofR::preProcess() {
62			std::fill(avgGofr_.begin(), avgGofr_.end(), 0.0);
63			}
64
65			void GofR::initalizeHistogram() {
66			npairs_ = 0;
67			std::fill(histogram_.begin(), histogram_.end(), 0);
68			}
69
70
71			void GofR::processHistogram() {
72
73	tim	2031	int nRealPairs = getNRealPairs();
74	tim	1990	double volume = info_->getSnapshotManager()->getCurrentSnapshot()->getVolume();
75	tim	2031	double pairDensity = nRealPairs /volume;
76	tim	1995	double pairConstant = ( 4.0 * NumericConstant::PI * pairDensity ) / 3.0;
77	tim	1990
78			for(int i = 0 ; i < histogram_.size(); ++i){
79
80	tim	1993	double rLower = i * deltaR_;
81			double rUpper = rLower + deltaR_;
82	tim	1990	double volSlice = ( rUpper * rUpper * rUpper ) - ( rLower * rLower * rLower );
83			double nIdeal = volSlice * pairConstant;
84
85			avgGofr_[i] += histogram_[i] / nIdeal;
86			}
87
88			}
89
90			void GofR::collectHistogram(StuntDouble* sd1, StuntDouble* sd2) {
91
92			if (sd1 == sd2) {
93			return;
94			}
95
96			Vector3d pos1 = sd1->getPos();
97			Vector3d pos2 = sd2->getPos();
98			Vector3d r12 = pos1 - pos2;
99	tim	1991	currentSnapshot_->wrapVector(r12);
100	tim	1990
101	tim	1991	double distance = r12.length();
102
103	tim	2012	if (distance < len_) {
104			int whichBin = distance / deltaR_;
105			++histogram_[whichBin];
106			++npairs_;
107			}
108	tim	1990	}
109
110
111			void GofR::writeRdf() {
112			std::ofstream rdfStream(outputFilename_.c_str());
113			if (rdfStream.is_open()) {
114			rdfStream << "#radial distribution function\n";
115	tim	1991	rdfStream << "#selection1: (" << selectionScript1_ << ")\t";
116			rdfStream << "selection2: (" << selectionScript2_ << ")\n";
117			rdfStream << "#r\tcorrValue\n";
118			for (int i = 0; i < avgGofr_.size(); ++i) {
119	tim	1993	double r = deltaR_ * (i + 0.5);
120	tim	1991	rdfStream << r << "\t" << avgGofr_[i]/nProcessed_ << "\n";
121			}
122	tim	1990
123			} else {
124
125
126			}
127	tim	1991
128			rdfStream.close();
129	tim	1990	}
130
131			}
132