| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4FieldManager.cc,v 1.15 2007/12/07 15:34:10 japost Exp $
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| 28 | // GEANT4 tag $Name: $
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| 29 | //
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| 30 | // -------------------------------------------------------------------
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| 31 |
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| 32 | #include "G4FieldManager.hh"
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| 33 | #include "G4Field.hh"
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| 34 | #include "G4MagneticField.hh"
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| 35 | #include "G4ChordFinder.hh"
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| 36 | #include "G4FieldManagerStore.hh"
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| 37 |
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| 38 | G4FieldManager::G4FieldManager(G4Field *detectorField,
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| 39 | G4ChordFinder *pChordFinder,
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| 40 | G4bool fieldChangesEnergy
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| 41 | )
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| 42 | : fDetectorField(detectorField),
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| 43 | fChordFinder(pChordFinder),
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| 44 | fAllocatedChordFinder(false),
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| 45 | fDefault_Delta_One_Step_Value(0.01*mm),
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| 46 | fDefault_Delta_Intersection_Val(0.001*mm),
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| 47 | fEpsilonMinDefault(5.0e-5),
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| 48 | fEpsilonMaxDefault(0.001),
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| 49 | fEpsilonMin( fEpsilonMinDefault ),
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| 50 | fEpsilonMax( fEpsilonMaxDefault)
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| 51 | {
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| 52 | fDelta_One_Step_Value= fDefault_Delta_One_Step_Value;
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| 53 | fDelta_Intersection_Val= fDefault_Delta_Intersection_Val;
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| 54 | if ( detectorField )
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| 55 | fFieldChangesEnergy= detectorField->DoesFieldChangeEnergy();
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| 56 | else
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| 57 | fFieldChangesEnergy= fieldChangesEnergy;
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| 58 |
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| 59 | // Add to store
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| 60 | G4FieldManagerStore::Register(this);
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| 61 |
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| 62 | }
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| 63 |
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| 64 | G4FieldManager::G4FieldManager(G4MagneticField *detectorField)
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| 65 | : fDetectorField(detectorField), fAllocatedChordFinder(true),
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| 66 | fFieldChangesEnergy(false),
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| 67 | fDefault_Delta_One_Step_Value(0.01*mm),
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| 68 | fDefault_Delta_Intersection_Val(0.001*mm),
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| 69 | fEpsilonMinDefault(5.0e-5),
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| 70 | fEpsilonMaxDefault(0.001),
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| 71 | fEpsilonMin( fEpsilonMinDefault ),
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| 72 | fEpsilonMax( fEpsilonMaxDefault)
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| 73 | {
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| 74 | fChordFinder= new G4ChordFinder( detectorField );
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| 75 | fDelta_One_Step_Value= fDefault_Delta_One_Step_Value;
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| 76 | fDelta_Intersection_Val= fDefault_Delta_Intersection_Val;
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| 77 | // Add to store
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| 78 | G4FieldManagerStore::Register(this);
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| 79 | }
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| 80 |
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| 81 | void G4FieldManager::ConfigureForTrack( const G4Track * )
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| 82 | {
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| 83 | // Default is to do nothing!
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| 84 | ;
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| 85 | }
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| 86 |
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| 87 | G4FieldManager::~G4FieldManager()
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| 88 | {
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| 89 | if( fAllocatedChordFinder ){
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| 90 | delete fChordFinder;
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| 91 | }
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| 92 | G4FieldManagerStore::DeRegister(this);
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| 93 | }
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| 94 |
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| 95 | void
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| 96 | G4FieldManager::CreateChordFinder(G4MagneticField *detectorMagField)
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| 97 | {
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| 98 | if ( fAllocatedChordFinder )
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| 99 | delete fChordFinder;
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| 100 | fChordFinder= new G4ChordFinder( detectorMagField );
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| 101 | fAllocatedChordFinder= true;
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| 102 | }
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| 103 |
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| 104 | G4bool G4FieldManager::SetDetectorField(G4Field *pDetectorField)
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| 105 | {
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| 106 | fDetectorField= pDetectorField;
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| 107 |
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| 108 | if ( pDetectorField )
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| 109 | fFieldChangesEnergy= pDetectorField->DoesFieldChangeEnergy();
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| 110 | else
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| 111 | fFieldChangesEnergy= false; // No field
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| 112 |
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| 113 | return false;
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| 114 | }
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| 115 |
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