#ifndef ALIMUONTRACKPARAM_H
#define ALIMUONTRACKPARAM_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/*$Id$*/
// Revision of includes 07/05/2004

/// \ingroup rec
/// \class AliMUONTrackParam
/// \brief Track parameters in ALICE dimuon spectrometer
///
////////////////////////////////////////////////////
/// Track parameters in ALICE dimuon spectrometer
////////////////////////////////////////////////////

#include <TObject.h>
#include "AliMUONHitForRec.h"

class AliESDMuonTrack;

class AliMUONTrackParam : public TObject 
{
 public:
  AliMUONTrackParam(); // Constructor
  virtual ~AliMUONTrackParam(); // Destructor
  
  AliMUONTrackParam(const AliMUONTrackParam& theMUONTrackParam);
  AliMUONTrackParam& operator=(const  AliMUONTrackParam& theMUONTrackParam);

  void GetParamFrom(const AliESDMuonTrack& esdMuonTrack);
  void SetParamFor(AliESDMuonTrack& esdMuonTrack);

  // Get and Set methods for data
	/// return inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
  Double_t GetInverseBendingMomentum(void) const {return fInverseBendingMomentum;}
	/// set inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
  void     SetInverseBendingMomentum(Double_t InverseBendingMomentum) {fInverseBendingMomentum = InverseBendingMomentum;}
	/// return bending slope (cm ** -1)
  Double_t GetBendingSlope(void) const {return fBendingSlope;}
	/// set bending slope (cm ** -1)
  void     SetBendingSlope(Double_t BendingSlope) {fBendingSlope = BendingSlope;}
	/// return non bending slope (cm ** -1)
  Double_t GetNonBendingSlope(void) const {return fNonBendingSlope;}
	/// set non bending slope (cm ** -1)
  void     SetNonBendingSlope(Double_t NonBendingSlope) {fNonBendingSlope = NonBendingSlope;}
	/// return Z coordinate (cm)
  Double_t GetZ(void) const {return fZ;}
	/// set Z coordinate (cm)
  void     SetZ(Double_t Z) {fZ = Z;}
	/// return bending coordinate (cm)
  Double_t GetBendingCoor(void) const {return fBendingCoor;}
	/// set bending coordinate (cm)
  void     SetBendingCoor(Double_t BendingCoor) {fBendingCoor = BendingCoor;}
	/// return non bending coordinate (cm)
  Double_t GetNonBendingCoor(void) const {return fNonBendingCoor;}
	/// set non bending coordinate (cm)
  void     SetNonBendingCoor(Double_t NonBendingCoor) {fNonBendingCoor = NonBendingCoor;}
  void              SetTrackParam(AliMUONTrackParam& TrackParam);
  AliMUONHitForRec* GetHitForRecPtr(void) const;
	/// set pointeur to associated HitForRec if any
  void              SetHitForRecPtr(AliMUONHitForRec* HitForRec) {fHitForRecPtr = HitForRec;}
  
  Double_t Px() const;  // return px
  Double_t Py() const;  // return py
  Double_t Pz() const;  // return pz
  Double_t P()  const;  // return total momentum

	/// necessary for sorting TClonesArray of TrackHit's
  Bool_t IsSortable () const {return kTRUE;}
	/// "Compare" function for sorting
  Int_t Compare(const TObject* TrackParam) const;

  virtual void Print(Option_t* opt="") const;
 

 private:
  Double_t fInverseBendingMomentum; ///< Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
  Double_t fBendingSlope; ///< Bending slope (cm ** -1)
  Double_t fNonBendingSlope; ///< Non bending slope (cm ** -1)
  Double_t fZ; ///< Z coordinate (cm)
  Double_t fBendingCoor; ///< bending coordinate (cm)
  Double_t fNonBendingCoor; ///< non bending coordinate (cm)

  AliMUONHitForRec *fHitForRecPtr; //!< Pointer to associated HitForRec if any
  
  ClassDef(AliMUONTrackParam, 2) // Track parameters in ALICE dimuon spectrometer
};
	
#endif