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G4LEPTSElossDistr.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4LEPTSElossDistr.cc
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25 //
26 #include "G4LEPTSElossDistr.hh"
27 #include "G4LEPTSDistribution.hh"
28 
29 
31  fileName = file;
32 
33  ReadFile();
34 }
35 
36 
38 {
40 
41  FILE * fp;
42 
43  if ((fp=fopen(fileName.c_str(), "r"))==NULL){
44  //G4cout << "Error reading " << fileName << G4endl;
45  NoBins = 0;
46  bFileFound = false;
47  return;
48  }
49 
50  bFileFound = true;
51  // G4cout << "Read Eloss Distro (" << fileName << ") " << G4endl;
52  G4int nEnergies;
53  G4int nAngles;
54  G4int nData;
55  (void) fscanf(fp,"%i \n",&nEnergies);
56  for( G4int ie = 0; ie < nEnergies; ie++ ){
57  float energySep;
58  (void) fscanf(fp,"%f \n",&energySep);
59  (void) fscanf(fp,"%i \n",&nAngles);
60  for( G4int ia = 0; ia < nAngles; ia++ ){
61  float angleSep;
62  (void) fscanf(fp,"%f \n",&angleSep);
65  mddist angleDist;
66  angleDist[angleSep] = dist;
67  theDistributions[energySep] = angleDist;
68 
69  (void) fscanf(fp,"%i \n",&nData);
70  if( dist->ReadFile( fp, nData ) ) {
71  G4Exception("G4LEPTSElossDistr",
72  "",
74  ("End of file found while reading file"+ fileName).c_str());
75  }
76  }
77  }
78 
79  fclose(fp);
80 
81 }
82 
83 
84 
86 {
87 // Sample Energy from Cumulative distr. G4interval [eMin, eMax]
88 
89  if( eMin > eMax) return 0.0;
90 
91  //Get the distribution to do the sampling
92  G4LEPTSDistribution* distr = 0;
93  if( theNDistributions == 1 ){
94  distr = (*( (*(theDistributions.begin())).second ).begin()).second;
95  } else{
96  mdmddist::const_iterator itedd;
97  for( itedd = theDistributions.begin(); itedd != theDistributions.end(); itedd++ ){
98  G4double energySep = (*itedd).first;
99  if( eMax < energySep ) {
100  //tt if( eMax <= energySep ) {
101  mddist dist1 = (*itedd).second;
102  mddist::const_iterator ited;
103  for( ited = dist1.begin(); ited != dist1.end(); ited++ ){
104  G4double angleSep = (*ited).first;
105  if( 1 < angleSep ) {
106  distr = (*ited).second;
107  break;
108  }
109  }
110  break;
111  }
112  }
113  }
114 
115  // G4cout << " LEPTSElossDistr::Sample( " << distr << " NDIST " << theNDistributions << G4endl; //GDEB
116  return distr->Sample(eMin, eMax);
117 }