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G4ErrorFreeTrajParam.hh
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27 // $Id: G4ErrorFreeTrajParam.hh 66892 2013-01-17 10:57:59Z gunter $
28 //
29 // Class Description:
30 //
31 // Holds the 5 independent variables of the trajectory for a
32 // G4ErrorFreeTrajState object. It is not used for anything but for
33 // printing, but anyhow it is updated everytime the position and
34 // momentum are updated.
35 
36 // History:
37 // - Created: Pedro Arce, September 2004
38 // --------------------------------------------------------------------
39 
40 #ifndef G4ErrorFreeTrajParam_hh
41 #define G4ErrorFreeTrajParam_hh
42 
43 #include "G4Point3D.hh"
44 #include "G4Vector3D.hh"
45 
46 #include "globals.hh"
47 #include "G4Track.hh"
48 
50 {
51  public: // with description
52 
54  : fInvP(0.), fLambda(0.), fPhi(0.), fYPerp(0.), fZPerp(0.){}
55  G4ErrorFreeTrajParam( const G4Point3D& pos, const G4Vector3D& mom );
56  // build parameters from position and momentum
57 
59 
60  void Update( const G4Track* aTrack );
61  // update parameters from G4Track
62 
63  friend
64  std::ostream& operator<<(std::ostream&, const G4ErrorFreeTrajParam& ts);
65 
66  // Set and Get methods
67 
68  void SetParameters( const G4Point3D& pos, const G4Vector3D& mom );
69 
70  G4Vector3D GetDirection() const { return fDir;}
71 
72  G4double GetInvP() const { return fInvP; }
73  G4double GetLambda() const { return fLambda; }
74  G4double GetPhi() const { return fPhi; }
75  G4double GetYPerp() const { return fYPerp; }
76  G4double GetZPerp() const { return fZPerp; }
77 
78  private:
79 
80  G4Vector3D fDir; //direction to which YPerp, ZPerp refer
81  G4double fInvP; // inverse of momentum
82  G4double fLambda; // 90 - theta angle of direction
83  G4double fPhi; // phi angle of direction
84  G4double fYPerp; // Y coordinate
85  G4double fZPerp; // Z coordinate
86 };
87 
88 #endif
G4double GetInvP() const
G4double GetPhi() const
G4double GetLambda() const
void SetParameters(const G4Point3D &pos, const G4Vector3D &mom)
G4double GetZPerp() const
G4Vector3D GetDirection() const
void Update(const G4Track *aTrack)
double G4double
Definition: G4Types.hh:76
G4double GetYPerp() const
static const G4double pos
friend std::ostream & operator<<(std::ostream &, const G4ErrorFreeTrajParam &ts)