P01/src/ExP01MagneticField.cc

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0025 //
0026 /// \file persistency/P01/src/ExP01MagneticField.cc
0027 /// \brief Implementation of the ExP01MagneticField class
0028 //
0029 //
0030 //
0031 //   User Field class implementation.
0032 //
0033 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0034 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0035
0036 #include "ExP01MagneticField.hh"
0037
0038 #include "G4FieldManager.hh"
0039
0040 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0041
0042 ExP01MagneticField::ExP01MagneticField() : G4UniformMagField(G4ThreeVector())
0043 {
0044   GetGlobalFieldManager()->SetDetectorField(this);
0045   GetGlobalFieldManager()->CreateChordFinder(this);
0046 }
0047
0048 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0049
0050 ExP01MagneticField::ExP01MagneticField(G4ThreeVector fieldVector) : G4UniformMagField(fieldVector)
0051 {
0052   GetGlobalFieldManager()->SetDetectorField(this);
0053   GetGlobalFieldManager()->CreateChordFinder(this);
0054 }
0055
0056 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0057
0058 // Set the value of the Global Field to fieldValue along X
0059 //
0060 void ExP01MagneticField::SetFieldValue(G4double fieldValue)
0061 {
0062   G4UniformMagField::SetFieldValue(G4ThreeVector(fieldValue, 0, 0));
0063 }
0064
0065 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0066
0067 // Set the value of the Global Field
0068 //
0069 void ExP01MagneticField::SetFieldValue(G4ThreeVector fieldVector)
0070 {
0071   // Find the Field Manager for the global field
0072   G4FieldManager* fieldMgr = GetGlobalFieldManager();
0073
0074   if (fieldVector != G4ThreeVector(0., 0., 0.)) {
0075     G4UniformMagField::SetFieldValue(fieldVector);
0076     fieldMgr->SetDetectorField(this);
0077   }
0078   else {
0079     // If the new field's value is Zero, then it is best to
0080     //  insure that it is not used for propagation.
0081     G4MagneticField* magField = NULL;
0082     fieldMgr->SetDetectorField(magField);
0083   }
0084 }
0085
0086 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0087
0088 ExP01MagneticField::~ExP01MagneticField()
0089 {
0090   // GetGlobalFieldManager()->SetDetectorField(0);
0091 }
0092
0093 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0094
0095 #include "G4TransportationManager.hh"
0096
0097 G4FieldManager* ExP01MagneticField::GetGlobalFieldManager()
0098 {
0099   return G4TransportationManager::GetTransportationManager()->GetFieldManager();
0100 }
0101
0102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......