Geant4 Cross Reference |
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>> 45 >> 46 class G4ParticleChangeForMSC : public G4VParticleChange 45 { 47 { 46 public: << 48 public: 47 49 48 G4ParticleChangeForMSC(); << 50 G4ParticleChangeForMSC(); >> 51 // Default constructor 49 52 50 ~G4ParticleChangeForMSC() override = default << 53 virtual ~G4ParticleChangeForMSC(); >> 54 // Destructor 51 55 52 G4ParticleChangeForMSC(const G4ParticleChang << 56 // --- the following methods are for updating G4Step ----- 53 G4ParticleChangeForMSC& operator= << 57 // Return the pointer to the G4Step after updating the Step information 54 (const G4ParticleChangeForMSC& right) = dele << 58 // by using final state information of the track given by a physics >> 59 // process 55 60 56 // A multiple scattering process gives the f << 61 virtual G4Step* UpdateStepForAlongStep(G4Step* Step); 57 G4Step* UpdateStepForAlongStep(G4Step* step) << 62 virtual G4Step* UpdateStepForPostStep(G4Step* Step); >> 63 // A physics process gives the final state of the particle >> 64 // based on information of G4Track (or equivalently the PreStepPoint) 58 65 59 // Initialise only properties changed by mul << 66 virtual void Initialize(const G4Track&); 60 inline void InitialiseMSC(const G4Track&, co << 67 // Initialize all properties by using G4Track information 61 68 62 inline void ProposeMomentumDirection(const G << 69 // --- methods to keep information of the final state --- 63 inline const G4ThreeVector* GetProposedMomen << 70 // IMPORTANT NOTE: despite the name, what the class stores through its >> 71 // methods are the "FINAL" values of the Position, >> 72 // Momentum, etc. 64 73 65 inline void ProposePosition(const G4ThreeVec << 74 void ProposeMomentumDirection(const G4ThreeVector& Pfinal); 66 inline const G4ThreeVector& GetProposedPosit << 75 void ProposeMomentumDirection(G4double Px, G4double Py, G4double Pz); >> 76 const G4ThreeVector* GetMomentumDirection() const; >> 77 const G4ThreeVector* GetProposedMomentumDirection() const; >> 78 void SetProposedMomentumDirection(const G4ThreeVector& Pfinal); >> 79 // Get/Set theMomentumDirectionChange vector: it is the final momentum >> 80 // direction 67 81 68 private: << 82 const G4ThreeVector* GetPosition() const; >> 83 void ProposePosition(const G4ThreeVector& finalPosition); >> 84 const G4ThreeVector* GetProposedPosition() const; >> 85 void SetProposedPosition(const G4ThreeVector& finalPosition); >> 86 // Get/Set the final position of the current particle 69 87 70 G4ThreeVector theMomentumDirection; << 88 // --- Dump and debug methods --- 71 // It is the vector containing the final mom << 72 // after multiple scattering is applied alon << 73 89 74 G4ThreeVector thePosition; << 90 virtual void DumpInfo() const; 75 // The changed of post step position after m << 76 }; << 77 91 78 inline void G4ParticleChangeForMSC::ProposeMom << 92 virtual G4bool CheckIt(const G4Track&); 79 const G4ThreeVector& P) << 80 { << 81 theMomentumDirection = P; << 82 } << 83 93 84 inline const G4ThreeVector* << 94 protected: 85 G4ParticleChangeForMSC::GetProposedMomentumDir << 86 { << 87 return &theMomentumDirection; << 88 } << 89 95 90 inline void G4ParticleChangeForMSC::ProposePos << 96 G4ParticleChangeForMSC(const G4ParticleChangeForMSC& right); 91 { << 97 G4ParticleChangeForMSC& operator=(const G4ParticleChangeForMSC& right); 92 thePosition = P; << 98 // Hidden copy constructor and assignment operator 93 } << 94 99 95 inline const G4ThreeVector& G4ParticleChangeFo << 100 private: 96 { << 97 return thePosition; << 98 } << 99 101 100 inline void << 102 G4ThreeVector theMomentumDirection; 101 G4ParticleChangeForMSC::InitialiseMSC(const G4 << 103 // It is the vector containing the final momentum direction 102 { << 104 // after the invoked process. The application of the change 103 theStatusChange = track.GetTrackStatus(); << 105 // of the momentum direction of the particle is not done here. 104 auto poststep = step.GetPostStepPoint(); << 106 // The responsibility to apply the change is up the entity 105 thePosition = poststep->GetPosition(); << 107 // which invoked the process 106 theMomentumDirection = poststep->GetMomentum << 108 107 theCurrentTrack = &track; << 109 G4ThreeVector thePosition; 108 } << 110 // The changed (final) position of a given particle >> 111 }; >> 112 >> 113 #include "G4ParticleChangeForMSC.icc" 109 114 110 #endif 115 #endif 111 116