Gabriele Cosmo
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: ExN02MagneticField.cc,v 1.2 1998/12/04 20:25:22 japost Exp $
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// GEANT4 tag $Name: geant4-00 $
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//
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//
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// User Field class implementation.
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//
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#include "ExN02MagneticField.hh"
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#include "G4FieldManager.hh"
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// Constructors:
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ExN02MagneticField::ExN02MagneticField()
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: G4UniformMagField(G4ThreeVector())
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{
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GetGlobalFieldManager()->CreateChordFinder(this);
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}
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ExN02MagneticField::ExN02MagneticField(G4ThreeVector fieldVector)
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: G4UniformMagField(fieldVector)
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{
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GetGlobalFieldManager()->CreateChordFinder(this);
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}
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// Set the value of the Global Field to fieldValue along Z
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//
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void ExN02MagneticField::SetFieldValue(G4double fieldValue)
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{
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G4UniformMagField::SetFieldValue(G4ThreeVector(0,0,fieldValue));
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}
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// Set the value of the Global Field
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//
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void ExN02MagneticField::SetFieldValue(G4ThreeVector fieldVector)
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{
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// Find the Field Manager for the global field
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G4FieldManager* fieldMgr= GetGlobalFieldManager();
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if(fieldVector!=G4ThreeVector(0.,0.,0.))
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{
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G4UniformMagField::SetFieldValue(fieldVector);
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fieldMgr->SetDetectorField(this);
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} else {
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// If the new field's value is Zero, then it is best to
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// insure that it is not used for propagation.
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G4MagneticField* magField = NULL;
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fieldMgr->SetDetectorField(magField);
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}
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}
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ExN02MagneticField::~ExN02MagneticField()
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{
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// GetGlobalFieldManager()->SetDetectorField(0);
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}
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// Utility method
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#include "G4TransportationManager.hh"
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G4FieldManager* ExN02MagneticField::GetGlobalFieldManager()
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{
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return G4TransportationManager::GetTransportationManager()
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->GetFieldManager();
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}
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