| Geant4 Cross Reference |
1 //
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18 // * This code implementation is the result of the scientific and *
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24 // ********************************************************************
25 //
26 //
27 //
28 // Class Description:
29 //
30 // Holds the 5 independent variables of the trajectory for a
31 // G4ErrorFreeTrajState object. It is not used for anything but for
32 // printing, but anyhow it is updated everytime the position and
33 // momentum are updated.
34
35 // History:
36 // - Created: Pedro Arce, September 2004
37 // --------------------------------------------------------------------
38
39 #ifndef G4ErrorFreeTrajParam_hh
40 #define G4ErrorFreeTrajParam_hh
41
42 #include "G4Point3D.hh"
43 #include "G4Vector3D.hh"
44
45 #include "globals.hh"
46 #include "G4Track.hh"
47
48 class G4ErrorFreeTrajParam
49 {
50 public: // with description
51 G4ErrorFreeTrajParam()
52 : fInvP(0.)
53 , fLambda(0.)
54 , fPhi(0.)
55 , fYPerp(0.)
56 , fZPerp(0.)
57 {}
58 G4ErrorFreeTrajParam(const G4Point3D& pos, const G4Vector3D& mom);
59 // build parameters from position and momentum
60
61 G4ErrorFreeTrajParam(const G4ErrorFreeTrajParam&) = default;
62 G4ErrorFreeTrajParam(G4ErrorFreeTrajParam&&) = default;
63 // The copy and move constructors
64
65 virtual ~G4ErrorFreeTrajParam() {}
66
67 G4ErrorFreeTrajParam& operator=(const G4ErrorFreeTrajParam&) = default;
68 G4ErrorFreeTrajParam& operator=(G4ErrorFreeTrajParam&&) = default;
69 // The copy and move assignment operators
70
71 void Update(const G4Track* aTrack);
72 // update parameters from G4Track
73
74 friend std::ostream& operator<<(std::ostream&,
75 const G4ErrorFreeTrajParam& ts);
76
77 // Set and Get methods
78
79 void SetParameters(const G4Point3D& pos, const G4Vector3D& mom);
80
81 G4Vector3D GetDirection() const { return fDir; }
82
83 G4double GetInvP() const { return fInvP; }
84 G4double GetLambda() const { return fLambda; }
85 G4double GetPhi() const { return fPhi; }
86 G4double GetYPerp() const { return fYPerp; }
87 G4double GetZPerp() const { return fZPerp; }
88
89 private:
90 G4Vector3D fDir; // direction to which YPerp, ZPerp refer
91 G4double fInvP; // inverse of momentum
92 G4double fLambda; // 90 - theta angle of direction
93 G4double fPhi; // phi angle of direction
94 G4double fYPerp; // Y coordinate
95 G4double fZPerp; // Z coordinate
96 };
97
98 #endif
99