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25 //
26 // G4ParticleChangeForGamma
27 //
28 // Class description:
29 //
30 // Concrete class for ParticleChange for gamma processes.
31
32 // Author: Hisaya Kurashige, 23 March 1998
33 // Revision: Vladimir Ivantchenko, 15 April 2005
34 // 24 August 2022
35 // --------------------------------------------------------------------
36 #ifndef G4ParticleChangeForGamma_hh
37 #define G4ParticleChangeForGamma_hh 1
38
39 #include "globals.hh"
40 #include "G4ios.hh"
41 #include "G4VParticleChange.hh"
42
43 class G4DynamicParticle;
44
45 class G4ParticleChangeForGamma final : public G4VParticleChange
46 {
47 public:
48
49 G4ParticleChangeForGamma();
50
51 ~G4ParticleChangeForGamma() override = default;
52
53 G4ParticleChangeForGamma(const G4ParticleChangeForGamma& right) = delete;
54 G4ParticleChangeForGamma& operator=(const G4ParticleChangeForGamma& right) = delete;
55
56 // --- the following methods are for updating G4Step -----
57
58 G4Step* UpdateStepForAtRest(G4Step* pStep) final;
59 G4Step* UpdateStepForPostStep(G4Step* Step) final;
60 // A physics process gives the final state of the particle
61 // based on information of G4Track
62
63 inline void InitializeForPostStep(const G4Track&);
64 // Initialize all properties by using G4Track information
65
66 void AddSecondary(G4DynamicParticle* aParticle);
67 // Add next secondary
68
69 inline G4double GetProposedKineticEnergy() const;
70 inline void SetProposedKineticEnergy(G4double proposedKinEnergy);
71 // Get/Set the final kinetic energy of the current particle
72
73 inline const G4ThreeVector& GetProposedMomentumDirection() const;
74 inline void ProposeMomentumDirection(const G4ThreeVector& Pfinal);
75 // Get/Set the final momentum direction
76
77 inline const G4ThreeVector& GetProposedPolarization() const;
78 inline void ProposePolarization(const G4ThreeVector& dir);
79 inline void ProposePolarization(G4double Px, G4double Py, G4double Pz);
80
81 void DumpInfo() const override;
82
83 private:
84
85 G4double proposedKinEnergy = 0.0;
86 // The final kinetic energy of the current particle
87
88 G4ThreeVector proposedMomentumDirection;
89 // The final momentum direction of the current particle
90
91 G4ThreeVector proposedPolarization;
92 // The final polarization of the current particle
93 };
94
95 // ----------------------
96 // Inline methods
97 // ----------------------
98
99 inline
100 G4double G4ParticleChangeForGamma::GetProposedKineticEnergy() const
101 {
102 return proposedKinEnergy;
103 }
104
105 inline
106 void G4ParticleChangeForGamma::SetProposedKineticEnergy(G4double energy)
107 {
108 proposedKinEnergy = energy;
109 }
110
111 inline
112 const G4ThreeVector& G4ParticleChangeForGamma::
113 GetProposedMomentumDirection() const
114 {
115 return proposedMomentumDirection;
116 }
117
118 inline
119 void G4ParticleChangeForGamma::
120 ProposeMomentumDirection(const G4ThreeVector& dir)
121 {
122 proposedMomentumDirection = dir;
123 }
124
125 inline
126 const G4ThreeVector& G4ParticleChangeForGamma::GetProposedPolarization() const
127 {
128 return proposedPolarization;
129 }
130
131 inline
132 void G4ParticleChangeForGamma::ProposePolarization(const G4ThreeVector& dir)
133 {
134 proposedPolarization = dir;
135 }
136
137 inline
138 void G4ParticleChangeForGamma::ProposePolarization(G4double Px,
139 G4double Py,
140 G4double Pz)
141 {
142 proposedPolarization.setX(Px);
143 proposedPolarization.setY(Py);
144 proposedPolarization.setZ(Pz);
145 }
146
147 inline
148 void G4ParticleChangeForGamma::InitializeForPostStep(const G4Track& track)
149 {
150 InitializeSecondaries();
151 InitializeLocalEnergyDeposit();
152 InitializeParentWeight(track);
153 InitializeStatusChange(track);
154 proposedKinEnergy = track.GetKineticEnergy();
155 proposedMomentumDirection = track.GetMomentumDirection();
156 proposedPolarization = track.GetPolarization();
157 }
158
159 #endif
160