| Geant4 Cross Reference |
1 //
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25 //
26 //
27 //
28 //
29 // Class description:
30 //
31 // Represents a trajectory state on a surface.
32 // It can be represented by the 5 variables:
33 // 1/p, v', w', v, w
34 // where v'=dv/du and w'=dw/du in an orthonormal coordinate system
35 // with axis u, v and w.
36
37 // History:
38 //
39 // - Created: P. Arce
40 // --------------------------------------------------------------------
41
42 #ifndef G4ErrorSurfaceTrajState_hh
43 #define G4ErrorSurfaceTrajState_hh
44
45 #include "globals.hh"
46
47 #include "G4ErrorTrajState.hh"
48 #include "G4ErrorSurfaceTrajParam.hh"
49 #include "G4ErrorFreeTrajState.hh"
50
51 #include "G4Point3D.hh"
52 #include "G4Vector3D.hh"
53 #include "G4Plane3D.hh"
54
55 class G4ErrorSurfaceTrajState : public G4ErrorTrajState
56 {
57 public: // with description
58 G4ErrorSurfaceTrajState(const G4String& partType, const G4Point3D& pos,
59 const G4Vector3D& mom, const G4Plane3D& plane,
60 const G4ErrorTrajErr& errmat = G4ErrorTrajErr(5, 0));
61 // Constructor by providing particle, position, momentum and
62 // G4Plane3D surface
63
64 G4ErrorSurfaceTrajState(const G4String& partType, const G4Point3D& pos,
65 const G4Vector3D& mom, const G4Vector3D& vecV,
66 const G4Vector3D& vecW,
67 const G4ErrorTrajErr& errmat = G4ErrorTrajErr(5, 0));
68 // Constructor by providing particle, position, momentum and
69 // two vectors on surface
70
71 G4ErrorSurfaceTrajState(G4ErrorFreeTrajState& tpSC, const G4Plane3D& plane);
72 // Constructor by providing G4ErrorFreeTrajState and G4Plane3D surface
73
74 G4ErrorSurfaceTrajState(G4ErrorFreeTrajState& tpSC, const G4Vector3D& vecV,
75 const G4Vector3D& vecW, G4ErrorMatrix& transfM);
76 // Constructor by providing G4ErrorFreeTrajState and two vectors on surface
77
78 ~G4ErrorSurfaceTrajState() {}
79 G4ErrorMatrix BuildErrorMatrix(G4ErrorFreeTrajState& tpSC,
80 const G4Vector3D& vecV,
81 const G4Vector3D& vecW);
82 // Build the error matrix from a free state plus the vectors of the surface
83
84 virtual void Dump(std::ostream& out = G4cout) const;
85
86 friend std::ostream& operator<<(std::ostream&,
87 const G4ErrorSurfaceTrajState& ts);
88
89 // Set and Get methods
90
91 G4ErrorSurfaceTrajParam GetParameters() const { return fTrajParam; }
92 void SetParameters(const G4Point3D& pos, const G4Vector3D& mom,
93 const G4Vector3D& vecV, const G4Vector3D& vecW)
94 {
95 fPosition = pos;
96 fMomentum = mom;
97 fTrajParam.SetParameters(pos, mom, vecV, vecW);
98 }
99
100 void SetParameters(const G4Point3D& pos, const G4Vector3D& mom,
101 const G4Plane3D& plane)
102 {
103 fPosition = pos;
104 fMomentum = mom;
105 fTrajParam.SetParameters(pos, mom, plane);
106 }
107
108 G4Vector3D GetVectorV() const { return fTrajParam.GetVectorV(); }
109
110 G4Vector3D GetVectorW() const { return fTrajParam.GetVectorW(); }
111
112 virtual void SetPosition(const G4Point3D pos)
113 {
114 SetParameters(pos, fMomentum, GetVectorV(), GetVectorW());
115 }
116
117 virtual void SetMomentum(const G4Vector3D& mom)
118 {
119 SetParameters(fPosition, mom, GetVectorV(), GetVectorW());
120 }
121
122 private:
123 void Init();
124 // Define Trajectory State type and build charge
125
126 private:
127 G4ErrorSurfaceTrajParam fTrajParam;
128 };
129
130 #endif
131