Geant4-11
G4BOptnForceFreeFlight.cc
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29#include "G4Step.hh"
30
31
32
35 fCumulatedWeightChange ( -1.0 ),
36 fInitialTrackWeight ( -1.0 ),
37 fOperationComplete ( true )
38{
40}
41
43{
45}
46
48{
49 fOperationComplete = false;
50 proposeForceCondition = Forced;
52}
53
54
56 const G4Track* track,
57 const G4Step* step,
58 G4bool& forceFinalState)
59{
60 // -- If the track is reaching the volume boundary, its free flight ends. In this case, its zero
61 // -- weight is brought back to non-zero value: its initial weight is restored by the first
62 // -- ApplyFinalStateBiasing operation called, and the weight for force free flight is applied
63 // -- is applied by each operation.
64 // -- If the track is not reaching the volume boundary, it zero weight flight continues.
65
67 forceFinalState = true;
69 {
70 // -- Sanity checks:
72 {
74 ed << " Initial track weight is null ! " << G4endl;
75 G4Exception(" G4BOptnForceFreeFlight::ApplyFinalStateBiasing(...)",
76 "BIAS.GEN.05",
78 ed);
79 }
81 {
83 ed << " Cumulated weight is null ! " << G4endl;
84 G4Exception(" G4BOptnForceFreeFlight::ApplyFinalStateBiasing(...)",
85 "BIAS.GEN.06",
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;
95 }
96
97 return &fParticleChange;
98}
99
100
102{
103 fCumulatedWeightChange *= weightChange;
104}
@ JustWarning
void G4Exception(const char *originOfException, const char *exceptionCode, G4ExceptionSeverity severity, const char *description)
Definition: G4Exception.cc:35
std::ostringstream G4ExceptionDescription
Definition: G4Exception.hh:40
G4ForceCondition
@ Forced
@ fGeomBoundary
Definition: G4StepStatus.hh:43
double G4double
Definition: G4Types.hh:83
bool G4bool
Definition: G4Types.hh:86
#define G4endl
Definition: G4ios.hh:57
G4ILawForceFreeFlight * fForceFreeFlightInteractionLaw
virtual const G4VBiasingInteractionLaw * ProvideOccurenceBiasingInteractionLaw(const G4BiasingProcessInterface *, G4ForceCondition &)
virtual void AlongMoveBy(const G4BiasingProcessInterface *, const G4Step *, G4double)
virtual G4VParticleChange * ApplyFinalStateBiasing(const G4BiasingProcessInterface *, const G4Track *, const G4Step *, G4bool &)
G4bool GetIsFirstPostStepDoItInterface(G4bool physOnly=true) const
virtual void Initialize(const G4Track &)
G4StepStatus GetStepStatus() const
Definition: G4Step.hh:62
G4StepPoint * GetPostStepPoint() const
G4double GetWeight() const
void ProposeWeight(G4double finalWeight)
const char * name(G4int ptype)
#define DBL_MIN
Definition: templates.hh:54