Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/error_propagation/include/G4ErrorFreeTrajParam.hh

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
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 19 // * technical work of the GEANT4 collaboration.                      *
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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