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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 // File name: G4VEmAngularDistribution
32 //
33 // Author: V. Ivanchenko using design of existing
34 // interface G4VBremAngularDistribution
35 //
36 // Creation date: 13 October 2010
37 //
38 // Modifications:
39 //
40 // Class Description:
41 //
42 // Abstract base class for polar angle sampling
43 //
44 // Class Description: End
45
46 // -------------------------------------------------------------------
47 //
48
49 #ifndef G4VEmAngularDistribution_h
50 #define G4VEmAngularDistribution_h 1
51
52 #include "globals.hh"
53 #include "G4ThreeVector.hh"
54 #include "G4DynamicParticle.hh"
55
56 class G4Material;
57
58 class G4VEmAngularDistribution
59 {
60 public:
61
62 explicit G4VEmAngularDistribution(const G4String& name);
63
64 virtual ~G4VEmAngularDistribution();
65
66 // Sample direction in global coordinate system,
67 // this means for zero scattering angle this direction is the same
68 // as the direction of primary
69 virtual G4ThreeVector& SampleDirection(const G4DynamicParticle* dp,
70 G4double finalTotalEnergy,
71 G4int Z,
72 const G4Material*) = 0;
73
74 // Sample direction in global coordinate system for given electronic shell,
75 // this means for zero scattering angle this direction is the same
76 // as the direction of primary
77 virtual G4ThreeVector& SampleDirectionForShell(
78 const G4DynamicParticle* dp,
79 G4double finalTotalEnergy,
80 G4int Z,
81 G4int shellID,
82 const G4Material*);
83
84 virtual void SamplePairDirections(const G4DynamicParticle* dp,
85 G4double elecKinEnergy,
86 G4double posiKinEnergy,
87 G4ThreeVector& dirElectron,
88 G4ThreeVector& dirPositron,
89 G4int Z = 0,
90 const G4Material* mat = nullptr);
91
92 virtual void PrintGeneratorInformation() const;
93
94 inline const G4String& GetName() const;
95
96 // hide assignment operator
97 G4VEmAngularDistribution &
98 operator=(const G4VEmAngularDistribution &right) = delete;
99 G4VEmAngularDistribution(const G4VEmAngularDistribution&) = delete;
100
101 protected:
102
103 G4ThreeVector fLocalDirection;
104 G4bool fPolarisation;
105
106 private:
107
108 G4String fName;
109 };
110
111 inline const G4String& G4VEmAngularDistribution::GetName() const
112 {
113 return fName;
114 }
115
116 #endif
117
118