applications/staticProps/RhoR.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.
 */

/* Calculates Rho(R) for nanoparticle with radius R*/
#include <algorithm>
#include <fstream>
#include "applications/staticProps/RhoR.hpp"
#include "utils/simError.h"
#include "utils/NumericConstant.hpp"
#include "io/DumpReader.hpp"
#include "primitives/Molecule.hpp"
#include <math.h>

namespace oopse {

     
  RhoR::RhoR(SimInfo* info, const std::string& filename, const std::string& sele, RealType len, int nrbins, RealType particleR)
    : StaticAnalyser(info, filename), selectionScript_(sele),  evaluator_(info), seleMan_(info), len_(len), nRBins_(nrbins){
    
    
    evaluator_.loadScriptString(sele);
    if (!evaluator_.isDynamic()) {
      seleMan_.setSelectionSet(evaluator_.evaluate());
    }
    
    
    deltaR_ = len_ /nRBins_;
    
    histogram_.resize(nRBins_);
    avgRhoR_.resize(nRBins_);
    particleR_ = particleR;
    setOutputName(getPrefix(filename) + ".RhoR");
  }
  

  void RhoR::process() {
    

    DumpReader reader(info_, dumpFilename_);    
    int nFrames = reader.getNFrames();
    nProcessed_ = nFrames/step_;
    
    std::fill(avgRhoR_.begin(), avgRhoR_.end(), 0.0);     
    std::fill(histogram_.begin(), histogram_.end(), 0);
    
    for (int istep = 0; istep < nFrames; istep += step_) {
      
      int i;    
      StuntDouble* sd;
      reader.readFrame(istep);
      currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
      Vector3d CenterOfMass = info_->getCom();      
      
      
      if (evaluator_.isDynamic()) {
        seleMan_.setSelectionSet(evaluator_.evaluate());
      }
      
      //determine which atom belongs to which slice
      for (sd = seleMan_.beginSelected(i); sd != NULL; sd = seleMan_.nextSelected(i)) {
        Vector3d pos = sd->getPos();
        Vector3d r12 = CenterOfMass - pos;

        RealType distance = r12.length();
        
        if (distance < len_) {
          int whichBin = distance / deltaR_;
          histogram_[whichBin] += 1;
        }
        
      }

    }

    processHistogram(); 
    writeRhoR();
  }


  void RhoR::processHistogram() {

    RealType particleDensity =  3.0 * info_->getNGlobalMolecules() / (4.0 * NumericConstant::PI * pow(particleR_,3));
    RealType pairConstant = ( 4.0 * NumericConstant::PI * particleDensity ) / 3.0;

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

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

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

  }

 
  void RhoR::writeRhoR() {
    std::ofstream rdfStream(outputFilename_.c_str());
    if (rdfStream.is_open()) {
      rdfStream << "#radial density function rho(r)\n";
      rdfStream << "#r\tcorrValue\n";
      for (int i = 0; i < avgRhoR_.size(); ++i) {
        RealType r = deltaR_ * (i + 0.5);
        rdfStream << r << "\t" << avgRhoR_[i]/nProcessed_ << "\n";
      }
        
    } else {

      sprintf(painCave.errMsg, "RhoR: unable to open %s\n", outputFilename_.c_str());
      painCave.isFatal = 1;
      simError();  
    }

    rdfStream.close();
  }

}

Revision:	3463
Committed:	Thu Oct 16 18:25:36 2008 UTC (16 years, 6 months ago) by chuckv
File size:	5181 byte(s)
Log Message:	Returned old LD forces to SMIPDForceManager.
#	Content
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	/* Calculates Rho(R) for nanoparticle with radius R*/
43	#include <algorithm>
44	#include <fstream>
45	#include "applications/staticProps/RhoR.hpp"
46	#include "utils/simError.h"
47	#include "utils/NumericConstant.hpp"
48	#include "io/DumpReader.hpp"
49	#include "primitives/Molecule.hpp"
50	#include <math.h>
51
52	namespace oopse {
53
54
55	RhoR::RhoR(SimInfo* info, const std::string& filename, const std::string& sele, RealType len, int nrbins, RealType particleR)
56	: StaticAnalyser(info, filename), selectionScript_(sele), evaluator_(info), seleMan_(info), len_(len), nRBins_(nrbins){
57
58
59	evaluator_.loadScriptString(sele);
60	if (!evaluator_.isDynamic()) {
61	seleMan_.setSelectionSet(evaluator_.evaluate());
62	}
63
64
65	deltaR_ = len_ /nRBins_;
66
67	histogram_.resize(nRBins_);
68	avgRhoR_.resize(nRBins_);
69	particleR_ = particleR;
70	setOutputName(getPrefix(filename) + ".RhoR");
71	}
72
73
74	void RhoR::process() {
75
76
77
78	DumpReader reader(info_, dumpFilename_);
79	int nFrames = reader.getNFrames();
80	nProcessed_ = nFrames/step_;
81
82	std::fill(avgRhoR_.begin(), avgRhoR_.end(), 0.0);
83	std::fill(histogram_.begin(), histogram_.end(), 0);
84
85	for (int istep = 0; istep < nFrames; istep += step_) {
86
87	int i;
88	StuntDouble* sd;
89	reader.readFrame(istep);
90	currentSnapshot_ = info_->getSnapshotManager()->getCurrentSnapshot();
91	Vector3d CenterOfMass = info_->getCom();
92
93
94
95
96	if (evaluator_.isDynamic()) {
97	seleMan_.setSelectionSet(evaluator_.evaluate());
98	}
99
100	//determine which atom belongs to which slice
101	for (sd = seleMan_.beginSelected(i); sd != NULL; sd = seleMan_.nextSelected(i)) {
102	Vector3d pos = sd->getPos();
103	Vector3d r12 = CenterOfMass - pos;
104
105	RealType distance = r12.length();
106
107	if (distance < len_) {
108	int whichBin = distance / deltaR_;
109	histogram_[whichBin] += 1;
110	}
111
112	}
113
114	}
115
116	processHistogram();
117	writeRhoR();
118	}
119
120
121
122	void RhoR::processHistogram() {
123
124	RealType particleDensity = 3.0 * info_->getNGlobalMolecules() / (4.0 * NumericConstant::PI * pow(particleR_,3));
125	RealType pairConstant = ( 4.0 * NumericConstant::PI * particleDensity ) / 3.0;
126
127	for(int i = 0 ; i < histogram_.size(); ++i){
128
129	RealType rLower = i * deltaR_;
130	RealType rUpper = rLower + deltaR_;
131	RealType volSlice = ( rUpper * rUpper * rUpper ) - ( rLower * rLower * rLower );
132	RealType nIdeal = volSlice * pairConstant;
133
134	avgRhoR_[i] += histogram_[i] / nIdeal;
135	}
136
137	}
138
139
140
141	void RhoR::writeRhoR() {
142	std::ofstream rdfStream(outputFilename_.c_str());
143	if (rdfStream.is_open()) {
144	rdfStream << "#radial density function rho(r)\n";
145	rdfStream << "#r\tcorrValue\n";
146	for (int i = 0; i < avgRhoR_.size(); ++i) {
147	RealType r = deltaR_ * (i + 0.5);
148	rdfStream << r << "\t" << avgRhoR_[i]/nProcessed_ << "\n";
149	}
150
151	} else {
152
153	sprintf(painCave.errMsg, "RhoR: unable to open %s\n", outputFilename_.c_str());
154	painCave.isFatal = 1;
155	simError();
156	}
157
158	rdfStream.close();
159	}
160
161	}
162