Gabriele Cosmo
144 lines
5.6 KiB
C++
144 lines
5.6 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4FieldTrack.hh,v 1.10 2003/10/31 14:35:51 gcosmo Exp $
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// GEANT4 tag $Name: geant4-06-00-patch-01 $
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//
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//
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// class G4FieldTrack
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//
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// Class description:
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//
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// Data structure bringing together a magnetic track's state.
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// (position, momentum direction & modulus, energy, spin, ... )
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// Uses/abilities:
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// - does not maintain any relationship between its data (eg energy/momentum).
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// - for use in Runge-Kutta solver (in passing it the values right now).
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// History
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// - First version: Oct 14, 1996 John Apostolakis
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// - Modified: Oct 24, 1996 JA: Added dist_on_curve, deleted constructor
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// Nov 5, 1998 JA: Added energy, momentum, TOF, spin &
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// several constructor, access, set methods
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// -------------------------------------------------------------------
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#ifndef G4FieldTrack_HH
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#define G4FieldTrack_HH
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#include "G4ThreeVector.hh"
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class G4FieldTrack
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{
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public: // with description
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G4FieldTrack( const G4ThreeVector& pPosition,
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const G4ThreeVector& pMomentumDirection,
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G4double curve_length,
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G4double kineticEnergy,
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const G4double restMass_c2,
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G4double velocity,
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G4double LaboratoryTimeOfFlight=0.0,
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G4double ProperTimeOfFlight=0.0,
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const G4ThreeVector* pSpin=0);
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G4FieldTrack( const G4FieldTrack& pFieldTrack );
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~G4FieldTrack();
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// Destructor
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inline G4FieldTrack& operator = ( const G4FieldTrack & rStVec );
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// Assignment operator
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inline G4ThreeVector GetMomentum() const;
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inline G4ThreeVector GetPosition() const;
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inline const G4ThreeVector& GetMomentumDir() const;
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inline G4double GetCurveLength() const;
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// Distance along curve of point.
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// inline G4double GetMomentumModulus() const; // Obsolete
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inline G4ThreeVector GetSpin() const;
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inline G4double GetLabTimeOfFlight() const;
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inline G4double GetProperTimeOfFlight() const;
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// Accessors.
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inline void SetPosition(G4ThreeVector nPos);
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inline void SetMomentum(G4ThreeVector nMomDir);
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// Does change mom-dir too.
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inline void SetMomentumDir(G4ThreeVector nMomDir);
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// Does NOT change Momentum or Velocity Vector.
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inline void SetCurveLength(G4double nCurve_s);
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// Distance along curve.
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inline void SetKineticEnergy(G4double nEnergy);
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// Does not modify momentum.
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// inline void SetMomentumModulus(G4double nMomentumMod); // Obsolete
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// Does not modify energy.
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inline void SetSpin(G4ThreeVector nSpin);
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inline void SetLabTimeOfFlight(G4double nTOF);
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inline void SetProperTimeOfFlight(G4double nTOF);
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// Modifiers
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public: // without description
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inline G4FieldTrack& SetCurvePnt(const G4ThreeVector& pPosition,
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const G4ThreeVector& pMomentum,
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G4double s_curve );
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// Old multi-set method
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G4double GetKineticEnergy() const; // Check it --> FIXME
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// G4double* PosVelVec(); // [6] Needed(?) for RK integrator
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// This old method completely broke encapsulation ?
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// static const G4int ncompSVEC=15;
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// Needed and should be used only for RK integration driver
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enum { ncompSVEC = 12 };
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inline void DumpToArray(G4double valArr[ncompSVEC]) const;
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inline void LoadFromArray(const G4double valArr[ncompSVEC]);
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friend std::ostream&
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operator<<( std::ostream& os, G4FieldTrack& SixVec);
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private:
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G4double SixVector[6];
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G4double fDistanceAlongCurve; // distance along curve of point
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G4double fKineticEnergy;
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G4double fRestMass_c2;
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G4double fLabTimeOfFlight;
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G4double fProperTimeOfFlight;
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// G4double fMomentumModulus; // Unused
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G4ThreeVector fSpin;
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G4ThreeVector fMomentumDir;
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};
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#include "G4FieldTrack.icc"
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#endif /* End of ifndef G4FieldTrack_HH */
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// Rename:
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//
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// s/distance_along_curve/fDistanceAlongCurve/g;
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// s/SixVector/fSixVector/g;
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// s/G4SixVector/G4FieldTrack/g;
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