| Geant4 Cross Reference |
1 //
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25 //
26 // G4ParallelWorldProcess
27 //
28 // Class description:
29 //
30 // This process takes a parallel world and limits a step
31 // on the boundaries of volumes in the parallel world.
32 // It invokes sensitive detectors assigned in the parallel world.
33 // It switches a material (and a region if defined) in the
34 // assigned parallel world over the material (and the region)
35 // in the mass world.
36 //
37 // Author: M.Asai (SLAC), 2010.
38 //---------------------------------------------------------------------
39 #ifndef G4ParallelWorldProcess_h
40 #define G4ParallelWorldProcess_h 1
41
42 #include "G4FieldTrack.hh"
43 #include "G4MultiNavigator.hh"
44 #include "G4TouchableHandle.hh"
45 #include "G4VProcess.hh"
46 #include "globals.hh"
47
48 class G4Step;
49 class G4StepPoint;
50 class G4Navigator;
51 class G4TransportationManager;
52 class G4PathFinder;
53 class G4VPhysicalVolume;
54 class G4ParticleChange;
55
56 class G4ParallelWorldProcess : public G4VProcess
57 {
58 public:
59
60 G4ParallelWorldProcess(const G4String& processName = "ParaWorld",
61 G4ProcessType theType = fParallel);
62 ~G4ParallelWorldProcess() override;
63
64 //--------------------------------------------------------------
65 // Set Paralle World
66 //--------------------------------------------------------------
67
68 void SetParallelWorld(G4String parallelWorldName);
69 void SetParallelWorld(G4VPhysicalVolume* parallelWorld);
70
71 //--------------------------------------------------------------
72 // Process interface
73 //--------------------------------------------------------------
74
75 void StartTracking(G4Track*) override;
76
77 //------------------------------------------------------------------------
78 // GetPhysicalInteractionLength() and DoIt() methods for AtRest
79 //------------------------------------------------------------------------
80
81 G4double AtRestGetPhysicalInteractionLength(const G4Track&, G4ForceCondition*) override;
82 G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&) override;
83
84 //------------------------------------------------------------------------
85 // GetPhysicalInteractionLength() and DoIt() methods for AlongStep
86 //------------------------------------------------------------------------
87
88 G4double AlongStepGetPhysicalInteractionLength(const G4Track&, G4double, G4double, G4double&,
89 G4GPILSelection*) override;
90 G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&) override;
91
92 //-----------------------------------------------------------------------
93 // GetPhysicalInteractionLength() and DoIt() methods for PostStep
94 //-----------------------------------------------------------------------
95
96 G4double PostStepGetPhysicalInteractionLength(const G4Track&, G4double,
97 G4ForceCondition*) override;
98 G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&) override;
99
100 //-----------------------------------------------------------------------
101 // Flag for material switching
102 //-----------------------------------------------------------------------
103
104 inline void SetLayeredMaterialFlag(G4bool flg = true) { layeredMaterialFlag = flg; }
105 inline G4bool GetLayeredMaterialFlag() const { return layeredMaterialFlag; }
106
107 //--------------------------------------------------------------------
108 // Returns whether a particular particle type requires AtRest process
109 //--------------------------------------------------------------------
110 G4bool IsAtRestRequired(G4ParticleDefinition*);
111
112 //-----------------------------------------------------------------------
113 // Static G4Step object for "Hyper-step"
114 //-----------------------------------------------------------------------
115 static const G4Step* GetHyperStep();
116 static G4int GetHypNavigatorID();
117
118 protected:
119
120 void CopyStep(const G4Step& step);
121 void SwitchMaterial(G4StepPoint*);
122
123 protected:
124
125 G4Step* fGhostStep;
126 G4StepPoint* fGhostPreStepPoint;
127 G4StepPoint* fGhostPostStepPoint;
128
129 G4VParticleChange aDummyParticleChange;
130 G4ParticleChange xParticleChange;
131
132 G4TransportationManager* fTransportationManager;
133 G4PathFinder* fPathFinder;
134
135 // -------------------------------
136 // Navigation in the Ghost World:
137 // -------------------------------
138 G4String fGhostWorldName;
139 G4VPhysicalVolume* fGhostWorld{nullptr};
140 G4Navigator* fGhostNavigator{nullptr};
141 G4int fNavigatorID{-1};
142 G4TouchableHandle fOldGhostTouchable;
143 G4TouchableHandle fNewGhostTouchable;
144 G4FieldTrack fFieldTrack;
145 G4double fGhostSafety{0.};
146 G4bool fOnBoundary{false};
147
148 //-----------------------------------------------------------------------
149 // Flag for material switching
150 //-----------------------------------------------------------------------
151 G4bool layeredMaterialFlag{false};
152
153 private:
154
155 static G4ThreadLocal G4Step* fpHyperStep;
156 static G4ThreadLocal G4int nParallelWorlds;
157 static G4ThreadLocal G4int fNavIDHyp;
158 G4int iParallelWorld;
159 };
160
161 #endif
162