| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // $Id: G4ErrorFreeTrajParam.hh,v 1.2 2007/05/29 14:41:35 gcosmo Exp $
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $
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| 29 | //
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| 30 | // Class Description:
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| 31 | //
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| 32 | // Holds the 5 independent variables of the trajectory for a
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| 33 | // G4ErrorFreeTrajState object. It is not used for anything but for
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| 34 | // printing, but anyhow it is updated everytime the position and
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| 35 | // momentum are updated.
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| 36 |
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| 37 | // History:
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| 38 | // - Created: Pedro Arce, September 2004
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| 39 | // --------------------------------------------------------------------
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| 40 |
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| 41 | #ifndef G4ErrorFreeTrajParam_hh
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| 42 | #define G4ErrorFreeTrajParam_hh
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| 43 |
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| 44 | #include "G4Point3D.hh"
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| 45 | #include "G4Vector3D.hh"
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| 46 |
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| 47 | #include "globals.hh"
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| 48 | #include "G4Track.hh"
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| 49 |
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| 50 | class G4ErrorFreeTrajParam
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| 51 | {
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| 52 | public: // with description
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| 53 |
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| 54 | G4ErrorFreeTrajParam(){}
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| 55 | G4ErrorFreeTrajParam( const G4Point3D& pos, const G4Vector3D& mom );
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| 56 | // build parameters from position and momentum
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| 57 |
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| 58 | virtual ~G4ErrorFreeTrajParam(){}
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| 59 |
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| 60 | void Update( const G4Track* aTrack );
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| 61 | // update parameters from G4Track
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| 62 |
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| 63 | friend
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| 64 | std::ostream& operator<<(std::ostream&, const G4ErrorFreeTrajParam& ts);
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| 65 |
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| 66 | // Set and Get methods
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| 67 |
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| 68 | void SetParameters( const G4Point3D& pos, const G4Vector3D& mom );
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| 69 |
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| 70 | G4Vector3D GetDirection() const { return fDir;}
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| 71 |
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| 72 | G4double GetInvP() const { return fInvP; }
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| 73 | G4double GetLambda() const { return fLambda; }
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| 74 | G4double GetPhi() const { return fPhi; }
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| 75 | G4double GetYPerp() const { return fYPerp; }
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| 76 | G4double GetZPerp() const { return fZPerp; }
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| 77 |
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| 78 | private:
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| 79 |
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| 80 | G4Vector3D fDir; //direction to which YPerp, ZPerp refer
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| 81 | G4double fInvP; // inverse of momentum
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| 82 | G4double fLambda; // 90 - theta angle of direction
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| 83 | G4double fPhi; // phi angle of direction
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| 84 | G4double fYPerp; // Y coordinate
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| 85 | G4double fZPerp; // Z coordinate
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| 86 | };
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| 87 |
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| 88 | #endif
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