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25 // 25 //
26 // G4BOptnForceFreeFlight <<
27 // ------------------------------------------- <<
28 #include "G4BOptnForceFreeFlight.hh" 26 #include "G4BOptnForceFreeFlight.hh"
29 #include "G4ILawForceFreeFlight.hh" 27 #include "G4ILawForceFreeFlight.hh"
30 #include "G4BiasingProcessInterface.hh" 28 #include "G4BiasingProcessInterface.hh"
31 #include "G4Step.hh" 29 #include "G4Step.hh"
32 30
33 G4BOptnForceFreeFlight::G4BOptnForceFreeFlight << 31
34 : G4VBiasingOperation( name ) << 32
>> 33 G4BOptnForceFreeFlight::G4BOptnForceFreeFlight(G4String name)
>> 34 : G4VBiasingOperation ( name ),
>> 35 fCumulatedWeightChange ( -1.0 ),
>> 36 fInitialTrackWeight ( -1.0 ),
>> 37 fOperationComplete ( true )
35 { 38 {
36 fForceFreeFlightInteractionLaw = new G4ILawF 39 fForceFreeFlightInteractionLaw = new G4ILawForceFreeFlight("LawForOperation"+name);
37 } 40 }
38 41
39 G4BOptnForceFreeFlight::~G4BOptnForceFreeFligh 42 G4BOptnForceFreeFlight::~G4BOptnForceFreeFlight()
40 { 43 {
41 delete fForceFreeFlightInteractionLaw; << 44 if ( fForceFreeFlightInteractionLaw ) delete fForceFreeFlightInteractionLaw;
42 } 45 }
43 46
44 const G4VBiasingInteractionLaw* G4BOptnForceFr << 47 const G4VBiasingInteractionLaw* G4BOptnForceFreeFlight::ProvideOccurenceBiasingInteractionLaw( const G4BiasingProcessInterface*, G4ForceCondition& proposeForceCondition )
45 ProvideOccurenceBiasingInteractionLaw( const G <<
46 G4Force <<
47 { 48 {
48 fOperationComplete = false; 49 fOperationComplete = false;
49 proposeForceCondition = Forced; 50 proposeForceCondition = Forced;
50 return fForceFreeFlightInteractionLaw; 51 return fForceFreeFlightInteractionLaw;
51 } 52 }
52 53
53 G4VParticleChange* G4BOptnForceFreeFlight:: << 54 G4bool G4BOptnForceFreeFlight::DenyProcessPostStepDoIt( const G4BiasingProcessInterface*, const G4Track*, const G4Step* step, G4double& proposedWeight )
54 ApplyFinalStateBiasing( const G4BiasingProcess << 55 {
55 const G4Track* track, << 56 // -- force free flight always deny process to apply its doit.
56 G4bool& forceFinalStat << 57 // -- if reaching boundary, track is restored with non-zero weight
>> 58 if ( fInitialTrackWeight <= DBL_MIN )
>> 59 {
>> 60 G4ExceptionDescription ed;
>> 61 ed << " Initial track weight is null ! " << G4endl;
>> 62 G4Exception(" G4BOptnForceFreeFlight::DenyProcessPostStepDoIt(...)",
>> 63 "BIAS.GEN.05",
>> 64 JustWarning,
>> 65 ed);
>> 66 }
>> 67 if ( fCumulatedWeightChange <= DBL_MIN )
>> 68 {
>> 69 G4ExceptionDescription ed;
>> 70 ed << " Cumulated weight is null ! " << G4endl;
>> 71 G4Exception(" G4BOptnForceFreeFlight::DenyProcessPostStepDoIt(...)",
>> 72 "BIAS.GEN.06",
>> 73 JustWarning,
>> 74 ed);
>> 75 }
>> 76 if ( step->GetPostStepPoint()->GetStepStatus() == fGeomBoundary )
>> 77 {
>> 78 if ( proposedWeight <= DBL_MIN ) proposedWeight = fCumulatedWeightChange * fInitialTrackWeight;
>> 79 else proposedWeight *= fCumulatedWeightChange;
>> 80 }
>> 81
>> 82 return true;
>> 83 }
>> 84
>> 85 G4VParticleChange* G4BOptnForceFreeFlight::ApplyFinalStateBiasing( const G4BiasingProcessInterface* callingProcess,
>> 86 const G4Track* track,
>> 87 const G4Step* step,
>> 88 G4bool& forceFinalState)
57 { 89 {
58 // -- If the track is reaching the volume bo 90 // -- If the track is reaching the volume boundary, its free flight ends. In this case, its zero
59 // -- weight is brought back to non-zero val 91 // -- weight is brought back to non-zero value: its initial weight is restored by the first
60 // -- ApplyFinalStateBiasing operation calle 92 // -- ApplyFinalStateBiasing operation called, and the weight for force free flight is applied
61 // -- is applied by each operation. 93 // -- is applied by each operation.
62 // -- If the track is not reaching the volum 94 // -- If the track is not reaching the volume boundary, it zero weight flight continues.
63 95
64 fParticleChange.Initialize( *track ); 96 fParticleChange.Initialize( *track );
65 forceFinalState = true; << 97 forceFinalState = true;
66 if ( step->GetPostStepPoint()->GetStepStatus 98 if ( step->GetPostStepPoint()->GetStepStatus() == fGeomBoundary )
67 { <<
68 // -- Sanity checks: <<
69 if ( fInitialTrackWeight <= DBL_MIN ) <<
70 { <<
71 G4ExceptionDescription ed; <<
72 ed << " Initial track weight is null ! " <<
73 G4Exception(" G4BOptnForceFreeFlight::Ap <<
74 "BIAS.GEN.05", JustWarning, <<
75 } <<
76 if ( fCumulatedWeightChange <= DBL_MIN ) <<
77 { 99 {
78 G4ExceptionDescription ed; << 100 // -- Sanity checks:
79 ed << " Cumulated weight is null ! " << << 101 if ( fInitialTrackWeight <= DBL_MIN )
80 G4Exception(" G4BOptnForceFreeFlight::Ap << 102 {
81 "BIAS.GEN.06", JustWarning, << 103 G4ExceptionDescription ed;
>> 104 ed << " Initial track weight is null ! " << G4endl;
>> 105 G4Exception(" G4BOptnForceFreeFlight::ApplyFinalStateBiasing(...)",
>> 106 "BIAS.GEN.05",
>> 107 JustWarning,
>> 108 ed);
>> 109 }
>> 110 if ( fCumulatedWeightChange <= DBL_MIN )
>> 111 {
>> 112 G4ExceptionDescription ed;
>> 113 ed << " Cumulated weight is null ! " << G4endl;
>> 114 G4Exception(" G4BOptnForceFreeFlight::ApplyFinalStateBiasing(...)",
>> 115 "BIAS.GEN.06",
>> 116 JustWarning,
>> 117 ed);
>> 118 }
>> 119
>> 120 G4double proposedWeight = track->GetWeight();
>> 121 if ( callingProcess->GetIsFirstPostStepDoItInterface() ) proposedWeight = fCumulatedWeightChange * fInitialTrackWeight;
>> 122 else proposedWeight *= fCumulatedWeightChange;
>> 123 fParticleChange.ProposeWeight(proposedWeight);
>> 124 fOperationComplete = true;
82 } 125 }
83 G4double proposedWeight = track->GetWeight <<
84 if ( callingProcess->GetIsFirstPostStepDoI <<
85 proposedWeight = fCumulatedWeightChange <<
86 else <<
87 proposedWeight *= fCumulatedWeightChange <<
88 fParticleChange.ProposeWeight(proposedWeig <<
89 fOperationComplete = true; <<
90 } <<
91 126
92 return &fParticleChange; 127 return &fParticleChange;
93 } 128 }
94 129
95 void G4BOptnForceFreeFlight:: << 130
96 AlongMoveBy( const G4BiasingProcessInterface*, << 131 void G4BOptnForceFreeFlight::AlongMoveBy( const G4BiasingProcessInterface*, const G4Step*, G4double weightChange )
97 const G4Step*, G4double weightCha <<
98 { 132 {
99 fCumulatedWeightChange *= weightChange; 133 fCumulatedWeightChange *= weightChange;
100 } 134 }
101 135