| Geant4 Cross Reference |
1 //
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24 // ********************************************************************
25 //
26 // G4ImportanceProcess
27 //
28 // Class description:
29 //
30 // Used internally by importance sampling in the "mass" geometry.
31 // This process is a forced post step process. It will apply
32 // importance sampling if the particle crosses a boundary in the
33 // "mass" geometry.
34
35 // Author: Michael Dressel, 2002
36 // --------------------------------------------------------------------
37 #ifndef G4ImportanceProcess_hh
38 #define G4ImportanceProcess_hh 1
39
40 #include "G4VProcess.hh"
41 #include "G4VTrackTerminator.hh"
42 #include "G4VTouchable.hh"
43
44 class G4SamplingPostStepAction;
45 class G4VImportanceAlgorithm;
46 class G4VIStore;
47
48 class G4Step;
49 class G4Navigator;
50 class G4TransportationManager;
51 class G4PathFinder;
52
53 #include "G4FieldTrack.hh"
54 #include "G4TouchableHandle.hh"
55 #include "G4MultiNavigator.hh" // For ELimited enum
56
57 class G4ImportanceProcess : public G4VProcess, public G4VTrackTerminator
58 {
59
60 public:
61
62 G4ImportanceProcess(const G4VImportanceAlgorithm &aImportanceAlgorithm,
63 const G4VIStore &aIstore,
64 const G4VTrackTerminator *TrackTerminator,
65 const G4String &aName = "ImportanceProcess",
66 G4bool para = false);
67 // creates a G4ParticleChange
68
69 virtual ~G4ImportanceProcess();
70 // delete the G4ParticleChange
71
72 G4ImportanceProcess(const G4ImportanceProcess &) = delete;
73 G4ImportanceProcess &operator=(const G4ImportanceProcess &) = delete;
74
75 //--------------------------------------------------------------
76 // Set Parallel World
77 //--------------------------------------------------------------
78
79 void SetParallelWorld(const G4String& parallelWorldName);
80
81 //--------------------------------------------------------------
82 // Process interface
83 //--------------------------------------------------------------
84
85 void StartTracking(G4Track*);
86
87
88 virtual G4double
89 PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
90 G4double previousStepSize,
91 G4ForceCondition* condition);
92 // make process beeing forced
93
94 virtual G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
95 // manage the importance sampling in the "mass" geometry
96
97 virtual void KillTrack() const;
98 // used in case no scoring process follows that does the killing
99
100 virtual const G4String& GetName() const;
101
102 // no operation in AtRestDoIt and AlongStepDoIt
103
104 virtual G4double
105 AlongStepGetPhysicalInteractionLength(const G4Track&,
106 G4double ,
107 G4double ,
108 G4double& ,
109 G4GPILSelection*);
110 virtual G4double
111 AtRestGetPhysicalInteractionLength(const G4Track& ,
112 G4ForceCondition*);
113
114 virtual G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
115 virtual G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
116
117 private:
118
119 void CopyStep(const G4Step& step);
120
121 G4Step* fGhostStep = nullptr;
122 G4StepPoint* fGhostPreStepPoint = nullptr;
123 G4StepPoint* fGhostPostStepPoint = nullptr;
124
125 G4ParticleChange* fParticleChange = nullptr;
126 const G4VImportanceAlgorithm &fImportanceAlgorithm;
127 const G4VIStore& fIStore;
128 G4SamplingPostStepAction* fPostStepAction = nullptr;
129
130 G4TransportationManager* fTransportationManager = nullptr;
131 G4PathFinder* fPathFinder = nullptr;
132
133 // -------------------------------
134 // Navigation in the Ghost World:
135 // -------------------------------
136 G4String fGhostWorldName = "NoParallelWorld";
137 G4VPhysicalVolume* fGhostWorld = nullptr;
138 G4Navigator* fGhostNavigator = nullptr;
139 G4int fNavigatorID = -1;
140 G4TouchableHandle fOldGhostTouchable;
141 G4TouchableHandle fNewGhostTouchable;
142 G4FieldTrack fFieldTrack = '0';
143 G4double fGhostSafety = -1;
144 G4bool fOnBoundary = false;
145
146 G4bool fParaflag = false;
147 G4FieldTrack fEndTrack = '0';
148 ELimited feLimited = kDoNot;
149 };
150
151 #endif
152