Gabriele Cosmo
89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4ErrorFreeTrajParam.hh 66892 2013-01-17 10:57:59Z gunter $
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//
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// Class Description:
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//
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// Holds the 5 independent variables of the trajectory for a
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// G4ErrorFreeTrajState object. It is not used for anything but for
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// printing, but anyhow it is updated everytime the position and
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// momentum are updated.
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// History:
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// - Created: Pedro Arce, September 2004
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// --------------------------------------------------------------------
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#ifndef G4ErrorFreeTrajParam_hh
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#define G4ErrorFreeTrajParam_hh
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#include "G4Point3D.hh"
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#include "G4Vector3D.hh"
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#include "globals.hh"
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#include "G4Track.hh"
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class G4ErrorFreeTrajParam
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{
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public: // with description
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G4ErrorFreeTrajParam()
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: fInvP(0.), fLambda(0.), fPhi(0.), fYPerp(0.), fZPerp(0.){}
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G4ErrorFreeTrajParam( const G4Point3D& pos, const G4Vector3D& mom );
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// build parameters from position and momentum
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virtual ~G4ErrorFreeTrajParam(){}
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void Update( const G4Track* aTrack );
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// update parameters from G4Track
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friend
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std::ostream& operator<<(std::ostream&, const G4ErrorFreeTrajParam& ts);
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// Set and Get methods
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void SetParameters( const G4Point3D& pos, const G4Vector3D& mom );
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G4Vector3D GetDirection() const { return fDir;}
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G4double GetInvP() const { return fInvP; }
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G4double GetLambda() const { return fLambda; }
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G4double GetPhi() const { return fPhi; }
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G4double GetYPerp() const { return fYPerp; }
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G4double GetZPerp() const { return fZPerp; }
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private:
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G4Vector3D fDir; //direction to which YPerp, ZPerp refer
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G4double fInvP; // inverse of momentum
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G4double fLambda; // 90 - theta angle of direction
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G4double fPhi; // phi angle of direction
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G4double fYPerp; // Y coordinate
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G4double fZPerp; // Z coordinate
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};
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#endif
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