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1 //
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25 //
26 // G4VContinuousDiscreteProcess
27 //
28 // Class description:
29 //
30 // Abstract class which defines the public behavior of
31 // discrete physics interactions.
32
33 // Authors:
34 // - 2 December 1995, G.Cosmo - First implementation, based on object model
35 // - 8 January 1997, H.Kurashige - New Physics scheme
36 // --------------------------------------------------------------------
37 #ifndef G4VContinuousDiscreteProcess_hh
38 #define G4VContinuousDiscreteProcess_hh 1
39
40 #include "globals.hh"
41 #include "G4ios.hh"
42
43 #include "G4VProcess.hh"
44
45 class G4VContinuousDiscreteProcess : public G4VProcess
46 {
47 public:
48
49 G4VContinuousDiscreteProcess(const G4String& ,
50 G4ProcessType aType = fNotDefined);
51 G4VContinuousDiscreteProcess(G4VContinuousDiscreteProcess &);
52
53 virtual ~G4VContinuousDiscreteProcess();
54
55 G4VContinuousDiscreteProcess& operator=(const G4VContinuousDiscreteProcess&) = delete;
56
57 virtual G4double PostStepGetPhysicalInteractionLength(
58 const G4Track& track,
59 G4double previousStepSize,
60 G4ForceCondition* condition
61 );
62
63 virtual G4VParticleChange* PostStepDoIt(
64 const G4Track& ,
65 const G4Step&
66 );
67
68 virtual G4double AlongStepGetPhysicalInteractionLength(
69 const G4Track&,
70 G4double previousStepSize,
71 G4double currentMinimumStep,
72 G4double& currentSafety,
73 G4GPILSelection* selection
74 );
75
76 virtual G4VParticleChange* AlongStepDoIt(
77 const G4Track& ,
78 const G4Step&
79 );
80
81 virtual G4double AtRestGetPhysicalInteractionLength(
82 const G4Track& ,
83 G4ForceCondition*
84 ) { return -1.0; }
85 // No operation in AtRestDoIt
86
87 virtual G4VParticleChange* AtRestDoIt(
88 const G4Track& ,
89 const G4Step&
90 ) { return 0; }
91 // No operation in AtRestDoIt
92
93 protected:
94
95 virtual G4double GetMeanFreePath(const G4Track& aTrack,
96 G4double previousStepSize,
97 G4ForceCondition* condition )= 0;
98 // Calculates from the macroscopic cross-section a mean
99 // free path, the value is returned in units of distance
100
101 virtual G4double GetContinuousStepLimit(const G4Track& aTrack,
102 G4double previousStepSize,
103 G4double currentMinimumStep,
104 G4double& currentSafety ) = 0;
105
106 inline void SetGPILSelection(G4GPILSelection selection)
107 { valueGPILSelection = selection; }
108
109 inline G4GPILSelection GetGPILSelection() const
110 { return valueGPILSelection; }
111
112 private:
113
114 G4VContinuousDiscreteProcess();
115 // Hidden default constructor
116
117 G4GPILSelection valueGPILSelection = CandidateForSelection;
118 // This is the returned value of G4GPILSelection in
119 // the arguments of AlongStepGPIL()
120 };
121
122 #endif
123