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Geant4/examples/advanced/composite_calorimeter/src/CCalMagneticField.cc

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Diff markup

Differences between /examples/advanced/composite_calorimeter/src/CCalMagneticField.cc (Version 11.3.0) and /examples/advanced/composite_calorimeter/src/CCalMagneticField.cc (Version 4.0.p2)


  1 //                                                  1 
  2 // *******************************************    
  3 // * License and Disclaimer                       
  4 // *                                              
  5 // * The  Geant4 software  is  copyright of th    
  6 // * the Geant4 Collaboration.  It is provided    
  7 // * conditions of the Geant4 Software License    
  8 // * LICENSE and available at  http://cern.ch/    
  9 // * include a list of copyright holders.         
 10 // *                                              
 11 // * Neither the authors of this software syst    
 12 // * institutes,nor the agencies providing fin    
 13 // * work  make  any representation or  warran    
 14 // * regarding  this  software system or assum    
 15 // * use.  Please see the license in the file     
 16 // * for the full disclaimer and the limitatio    
 17 // *                                              
 18 // * This  code  implementation is the result     
 19 // * technical work of the GEANT4 collaboratio    
 20 // * By using,  copying,  modifying or  distri    
 21 // * any work based  on the software)  you  ag    
 22 // * use  in  resulting  scientific  publicati    
 23 // * acceptance of all terms of the Geant4 Sof    
 24 // *******************************************    
 25 //                                                
 26 //////////////////////////////////////////////    
 27 // File: CCalMagneticField.cc                     
 28 // Description: User Field class implementatio    
 29 //////////////////////////////////////////////    
 30 #include <fstream>                                
 31                                                   
 32 #include "CCalMagneticField.hh"                   
 33 #include "CCalutils.hh"                           
 34 #include "G4SystemOfUnits.hh"                     
 35 #include "G4FieldManager.hh"                      
 36                                                   
 37 //#define ddebug                                  
 38 //#define debug                                   
 39                                                   
 40 //Constructor and destructor:                     
 41                                                   
 42 CCalMagneticField::CCalMagneticField(const G4S    
 43   fval(0), pos(0), slope(0), intercept(0)         
 44 {                                                 
 45 #ifdef debug                                      
 46   fVerbosity = 1;                                 
 47 #else                                             
 48   fVerbosity = 0;                                 
 49 #endif                                            
 50                                                   
 51   //Let's open the file                           
 52   G4cout << " ==> Opening file " << filename <    
 53          << G4endl;                               
 54   G4String pathName = std::getenv("CCAL_GLOBAL    
 55   std::ifstream is;                               
 56   G4bool ok = openGeomFile(is, pathName, filen    
 57                                                   
 58   if (ok) {                                       
 59     findDO(is, G4String("FLDM"));                 
 60     is >> fval >> npts >> xoff;                   
 61                                                   
 62     if (fVerbosity)                               
 63       G4cout << "Field value " << fval << " #     
 64         " offset in x "                           
 65              << xoff*mm << G4endl;                
 66                                                   
 67     if (npts > 0) {                               
 68       pos       = new G4double[npts];             
 69       slope     = new G4double[npts];             
 70       intercept = new G4double[npts];             
 71                                                   
 72       for (G4int i = 0; i < npts; i++) {          
 73         is >> pos[i] >> slope[i] >> intercept[    
 74         if (fVerbosity)                           
 75           G4cout << tab << "Position " << i <<    
 76                  << slope[i] << " Intercept "     
 77       }                                           
 78     }                                             
 79                                                   
 80     //////////////////////////////////////////    
 81     // Close the file                             
 82     G4cout << " ==> Closing file " << filename    
 83     is.close();                                   
 84   }                                               
 85 }                                                 
 86                                                   
 87                                                   
 88 CCalMagneticField::~CCalMagneticField() {         
 89   if (pos)                                        
 90     delete[] pos;                                 
 91   if (slope)                                      
 92     delete[] slope;                               
 93   if (intercept)                                  
 94     delete[] intercept;                           
 95 }                                                 
 96                                                   
 97                                                   
 98 // Member functions                               
 99                                                   
100 void CCalMagneticField::MagneticField(const G4    
101 {                                                 
102   G4int i=0;                                      
103   for (i=0; i<2; i++) {                           
104     B[i]   = 0*kilogauss;                         
105   }                                               
106                                                   
107   G4double m1=0;                                  
108   G4double c1=0;                                  
109   G4double xnew = x[0]/mm + xoff;                 
110   if (npts > 0) {                                 
111     for (i=0; i<npts; i++) {                      
112       if (xnew > pos[i]*mm) {                     
113         m1 = slope[i];                            
114         c1 = intercept[i];                        
115       }                                           
116     }                                             
117   }                                               
118   G4double scor = c1 + m*xnew;                    
119   if (scor < 0.) scor = 0.;                       
120   if (scor > 1.) scor = 1.0;                      
121                                                   
122   B[2] = scor*fval*kilogauss;                     
123   if (fVerbosity)                                 
124     {                                             
125                                                   
126       G4cout << "Field at x: " << x[0]/mm << "    
127         B[2]/tesla                                
128              << "T (m = " << m1 << ", c = " <<    
129         c1 << ", scale = " << scor << ")"         
130              << G4endl;                           
131     }                                             
132 }                                                 
133                                                   
134                                                   
135 CLHEP::Hep3Vector CCalMagneticField::             
136 MagneticField(const CLHEP::Hep3Vector point) c    
137                                                   
138   G4double x[3],B[3];                             
139   CLHEP::Hep3Vector v;                            
140                                                   
141   x[0] = point.x();                               
142   x[1] = point.y();                               
143   x[2] = point.z();                               
144   CCalMagneticField::MagneticField(x, B);         
145   v.setX(B[0]);                                   
146   v.setY(B[1]);                                   
147   v.setZ(B[2]);                                   
148   return v;                                       
149 }                                                 
150                                                   
151                                                   
152 void CCalMagneticField::GetFieldValue(const G4    
153   CCalMagneticField::MagneticField(x, B);         
154 }                                                 
155                                                   
156