Geant4_10
G4BOptnForceFreeFlight.hh
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27 // $Id: $
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29 //---------------------------------------------------------------
30 //
31 // G4BOptnForceFreeFlight
32 //
33 // Class Description:
34 // A G4VBiasingOperation physics-based biasing operation.
35 // If forces the physics process to not act on the track.
36 // In this implementation (meant for the ForceCollision
37 // operator) the free flight is done under zero weight for
38 // the track, and the action is meant to accumulate the weight
39 // change for making this uninteracting flight,
40 // cumulatedWeightChange.
41 // When the track reaches the current volume boundary, its
42 // weight is restore with value :
43 // initialWeight * cumulatedWeightChange
44 //
45 //---------------------------------------------------------------
46 // Initial version Nov. 2013 M. Verderi
47 #ifndef G4BOptnForceFreeFlight_hh
48 #define G4BOptnForceFreeFlight_hh 1
49 
50 #include "G4VBiasingOperation.hh"
51 #include "G4ForceCondition.hh"
53 
55 public:
56  // -- Constructor :
58  // -- destructor:
59  virtual ~G4BOptnForceFreeFlight();
60 
61 public:
62  // -- Methods from G4VBiasingOperation interface:
63  // -------------------------------------------
64  // -- Used:
68  virtual void AlongMoveBy( const G4BiasingProcessInterface*, const G4Step*, G4double );
69 
70  // -- Unused:
72  const G4Track*,
73  const G4Step* ) {return 0;}
75  G4double,
76  G4ForceCondition*) {return DBL_MAX;}
78  const G4Step* ) {return 0;}
79 
80 
81 public:
82  // -- Additional methods, specific to this class:
83  // ----------------------------------------------
84  // -- return concrete type of interaction law:
86  return fForceFreeFlightInteractionLaw;
87  }
88  // -- initialization for weight:
89  void ResetInitialTrackWeight(G4double w) {fInitialTrackWeight = w; fCumulatedWeightChange = 1.0;}
90 
91 private:
92  G4ILawForceFreeFlight* fForceFreeFlightInteractionLaw;
93  G4double fCumulatedWeightChange, fInitialTrackWeight;
94 };
95 
96 #endif
virtual const G4VBiasingInteractionLaw * ProvideOccurenceBiasingInteractionLaw(const G4BiasingProcessInterface *)
const XML_Char * name
Definition: expat.h:151
virtual G4ForceCondition ProposeForceCondition(const G4ForceCondition)
void ResetInitialTrackWeight(G4double w)
bool G4bool
Definition: G4Types.hh:79
virtual G4double DistanceToApplyOperation(const G4Track *, G4double, G4ForceCondition *)
Definition: G4Step.hh:76
virtual G4bool DenyProcessPostStepDoIt(const G4BiasingProcessInterface *, const G4Track *, const G4Step *, G4double &)
G4ILawForceFreeFlight * GetForceFreeFlightLaw()
virtual void AlongMoveBy(const G4BiasingProcessInterface *, const G4Step *, G4double)
double G4double
Definition: G4Types.hh:76
G4ForceCondition
#define DBL_MAX
Definition: templates.hh:83
virtual G4VParticleChange * GenerateBiasingFinalState(const G4Track *, const G4Step *)
virtual G4VParticleChange * ApplyFinalStateBiasing(const G4BiasingProcessInterface *, const G4Track *, const G4Step *)