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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
54 ApplyFinalStateBiasing( const G4BiasingProcess << 55 G4VParticleChange* G4BOptnForceFreeFlight::ApplyFinalStateBiasing( const G4BiasingProcessInterface* callingProcess,
55 const G4Track* track, << 56 const G4Track* track,
56 G4bool& forceFinalStat << 57 const G4Step* step,
>> 58 G4bool& forceFinalState)
57 { 59 {
58 // -- If the track is reaching the volume bo 60 // -- 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 61 // -- weight is brought back to non-zero value: its initial weight is restored by the first
60 // -- ApplyFinalStateBiasing operation calle 62 // -- ApplyFinalStateBiasing operation called, and the weight for force free flight is applied
61 // -- is applied by each operation. 63 // -- is applied by each operation.
62 // -- If the track is not reaching the volum 64 // -- If the track is not reaching the volume boundary, it zero weight flight continues.
63 65
64 fParticleChange.Initialize( *track ); 66 fParticleChange.Initialize( *track );
65 forceFinalState = true; << 67 forceFinalState = true;
66 if ( step->GetPostStepPoint()->GetStepStatus 68 if ( step->GetPostStepPoint()->GetStepStatus() == fGeomBoundary )
67 { <<
68 // -- Sanity checks: <<
69 if ( fInitialTrackWeight <= DBL_MIN ) <<
70 { 69 {
71 G4ExceptionDescription ed; << 70 // -- Sanity checks:
72 ed << " Initial track weight is null ! " << 71 if ( fInitialTrackWeight <= DBL_MIN )
73 G4Exception(" G4BOptnForceFreeFlight::Ap << 72 {
74 "BIAS.GEN.05", JustWarning, << 73 G4ExceptionDescription ed;
>> 74 ed << " Initial track weight is null ! " << G4endl;
>> 75 G4Exception(" G4BOptnForceFreeFlight::ApplyFinalStateBiasing(...)",
>> 76 "BIAS.GEN.05",
>> 77 JustWarning,
>> 78 ed);
>> 79 }
>> 80 if ( fCumulatedWeightChange <= DBL_MIN )
>> 81 {
>> 82 G4ExceptionDescription ed;
>> 83 ed << " Cumulated weight is null ! " << G4endl;
>> 84 G4Exception(" G4BOptnForceFreeFlight::ApplyFinalStateBiasing(...)",
>> 85 "BIAS.GEN.06",
>> 86 JustWarning,
>> 87 ed);
>> 88 }
>> 89
>> 90 G4double proposedWeight = track->GetWeight();
>> 91 if ( callingProcess->GetIsFirstPostStepDoItInterface() ) proposedWeight = fCumulatedWeightChange * fInitialTrackWeight;
>> 92 else proposedWeight *= fCumulatedWeightChange;
>> 93 fParticleChange.ProposeWeight(proposedWeight);
>> 94 fOperationComplete = true;
75 } 95 }
76 if ( fCumulatedWeightChange <= DBL_MIN ) <<
77 { <<
78 G4ExceptionDescription ed; <<
79 ed << " Cumulated weight is null ! " << <<
80 G4Exception(" G4BOptnForceFreeFlight::Ap <<
81 "BIAS.GEN.06", JustWarning, <<
82 } <<
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 96
92 return &fParticleChange; 97 return &fParticleChange;
93 } 98 }
94 99
95 void G4BOptnForceFreeFlight:: << 100
96 AlongMoveBy( const G4BiasingProcessInterface*, << 101 void G4BOptnForceFreeFlight::AlongMoveBy( const G4BiasingProcessInterface*, const G4Step*, G4double weightChange )
97 const G4Step*, G4double weightCha <<
98 { 102 {
99 fCumulatedWeightChange *= weightChange; 103 fCumulatedWeightChange *= weightChange;
100 } 104 }
101 105