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G4VDiscreteProcess.hh
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25 //
26 
27 //
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30 // ------------------------------------------------------------
31 // GEANT 4 class header file
32 //
33 // History: first implementation, based on object model of
34 // 2nd December 1995, G.Cosmo
35 // add G4VDiscreteProcess(const G4String&) 24 Jul 1996, Hisaya kurashige
36 //
37 // Class Description
38 // Abstract class which defines the public behavior of
39 // discrete physics interactions.
40 //
41 // ------------------------------------------------------------
42 // New Physics scheme 18 Dec. 1996 H.Kurahige
43 // ------------------------------------------------------------
44 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
45 // Fixed a bug in PostStepGetPhysicalInteractionLength
46 // 15 Apr. 2002 H.Kurashige
47 //
48 
49 #ifndef G4VDiscreteProcess_h
50 #define G4VDiscreteProcess_h 1
51 
52 #include "globals.hh"
53 #include "G4ios.hh"
54 
55 #include "G4VProcess.hh"
56 
58 {
59  // Abstract class which defines the public behavior of
60  // discrete physics interactions.
61  public:
62 
64  G4ProcessType aType = fNotDefined );
66 
67  virtual ~G4VDiscreteProcess();
68 
69  public :// with description
71  const G4Track& track,
72  G4double previousStepSize,
74  );
75 
77  const G4Track& ,
78  const G4Step&
79  );
80 
81  // no operation in AtRestDoIt and AlongStepDoIt
83  const G4Track&,
84  G4double ,
85  G4double ,
86  G4double& ,
88  ){ return -1.0; };
89 
91  const G4Track& ,
93  ) { return -1.0; };
94 
95  // no operation in AtRestDoIt and AlongStepDoIt
97  const G4Track& ,
98  const G4Step&
99  ) {return 0;};
100 
102  const G4Track& ,
103  const G4Step&
104  ) {return 0;};
105 
106  protected:// with description
107  virtual G4double GetMeanFreePath(const G4Track& aTrack,
108  G4double previousStepSize,
109  G4ForceCondition* condition
110  )=0;
111  // Calculates from the macroscopic cross section a mean
112  // free path, the value is returned in units of distance.
113 
114  private:
115  // hide default constructor and assignment operator as private
118 
119 };
120 
121 #endif
122 
123 
124