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25 // 25 //
26 // G4ParticleChangeForMSC 26 // G4ParticleChangeForMSC
27 // 27 //
28 // Class description: 28 // Class description:
29 // 29 //
30 // Concrete "Particle Change" class for Multip 30 // Concrete "Particle Change" class for Multiple Scattering process.
31 31
32 // Author: Hisaya Kurashige, 23 March 1998 32 // Author: Hisaya Kurashige, 23 March 1998
33 // Revision: Vladimir Ivantchenko, 16 January 33 // Revision: Vladimir Ivantchenko, 16 January 2004
34 // 23 August 2 34 // 23 August 2022
35 // ------------------------------------------- 35 // --------------------------------------------------------------------
36 #ifndef G4ParticleChangeForMSC_hh 36 #ifndef G4ParticleChangeForMSC_hh
37 #define G4ParticleChangeForMSC_hh 1 37 #define G4ParticleChangeForMSC_hh 1
38 38
39 #include "globals.hh" 39 #include "globals.hh"
40 #include "G4ios.hh" 40 #include "G4ios.hh"
41 #include "G4ThreeVector.hh" 41 #include "G4ThreeVector.hh"
42 #include "G4VParticleChange.hh" 42 #include "G4VParticleChange.hh"
43 43
44 class G4ParticleChangeForMSC final : public G4 44 class G4ParticleChangeForMSC final : public G4VParticleChange
45 { 45 {
46 public: 46 public:
47 47
48 G4ParticleChangeForMSC(); 48 G4ParticleChangeForMSC();
49 49
50 ~G4ParticleChangeForMSC() override = default 50 ~G4ParticleChangeForMSC() override = default;
51 51
52 G4ParticleChangeForMSC(const G4ParticleChang 52 G4ParticleChangeForMSC(const G4ParticleChangeForMSC& right) = delete;
53 G4ParticleChangeForMSC& operator= 53 G4ParticleChangeForMSC& operator=
54 (const G4ParticleChangeForMSC& right) = dele 54 (const G4ParticleChangeForMSC& right) = delete;
55 55
56 // A multiple scattering process gives the f 56 // A multiple scattering process gives the final state of the particle
57 G4Step* UpdateStepForAlongStep(G4Step* step) 57 G4Step* UpdateStepForAlongStep(G4Step* step) final;
58 58
59 // Initialise only properties changed by mul 59 // Initialise only properties changed by multiple scattering
60 inline void InitialiseMSC(const G4Track&, co 60 inline void InitialiseMSC(const G4Track&, const G4Step& step);
61 61
62 inline void ProposeMomentumDirection(const G 62 inline void ProposeMomentumDirection(const G4ThreeVector& Pfinal);
63 inline const G4ThreeVector* GetProposedMomen 63 inline const G4ThreeVector* GetProposedMomentumDirection() const;
64 64
65 inline void ProposePosition(const G4ThreeVec 65 inline void ProposePosition(const G4ThreeVector& finalPosition);
66 inline const G4ThreeVector& GetProposedPosit 66 inline const G4ThreeVector& GetProposedPosition() const;
67 67
68 private: 68 private:
69 69
70 G4ThreeVector theMomentumDirection; 70 G4ThreeVector theMomentumDirection;
71 // It is the vector containing the final mom 71 // It is the vector containing the final momentum direction
72 // after multiple scattering is applied alon 72 // after multiple scattering is applied along step
73 73
74 G4ThreeVector thePosition; 74 G4ThreeVector thePosition;
75 // The changed of post step position after m 75 // The changed of post step position after multiple scattering
76 }; 76 };
77 77
78 inline void G4ParticleChangeForMSC::ProposeMom 78 inline void G4ParticleChangeForMSC::ProposeMomentumDirection(
79 const G4ThreeVector& P) 79 const G4ThreeVector& P)
80 { 80 {
81 theMomentumDirection = P; 81 theMomentumDirection = P;
82 } 82 }
83 83
84 inline const G4ThreeVector* 84 inline const G4ThreeVector*
85 G4ParticleChangeForMSC::GetProposedMomentumDir 85 G4ParticleChangeForMSC::GetProposedMomentumDirection() const
86 { 86 {
87 return &theMomentumDirection; 87 return &theMomentumDirection;
88 } 88 }
89 89
90 inline void G4ParticleChangeForMSC::ProposePos 90 inline void G4ParticleChangeForMSC::ProposePosition(const G4ThreeVector& P)
91 { 91 {
92 thePosition = P; 92 thePosition = P;
93 } 93 }
94 94
95 inline const G4ThreeVector& G4ParticleChangeFo 95 inline const G4ThreeVector& G4ParticleChangeForMSC::GetProposedPosition() const
96 { 96 {
97 return thePosition; 97 return thePosition;
98 } 98 }
99 99
100 inline void 100 inline void
101 G4ParticleChangeForMSC::InitialiseMSC(const G4 101 G4ParticleChangeForMSC::InitialiseMSC(const G4Track& track, const G4Step& step)
102 { 102 {
103 theStatusChange = track.GetTrackStatus(); 103 theStatusChange = track.GetTrackStatus();
104 auto poststep = step.GetPostStepPoint(); 104 auto poststep = step.GetPostStepPoint();
105 thePosition = poststep->GetPosition(); 105 thePosition = poststep->GetPosition();
106 theMomentumDirection = poststep->GetMomentum 106 theMomentumDirection = poststep->GetMomentumDirection();
107 theCurrentTrack = &track; 107 theCurrentTrack = &track;
108 } 108 }
109 109
110 #endif 110 #endif
111 111