* See cxx source for full Copyright notice */
/*$Id$*/
+// Revision of includes 07/05/2004
-#include <TROOT.h>
+/// \ingroup rec
+/// \class AliMUONTrackParam
+/// \brief Track parameters in ALICE dimuon spectrometer
+///
+////////////////////////////////////////////////////
+/// Track parameters in ALICE dimuon spectrometer
+////////////////////////////////////////////////////
-class AliMUONHitForRec;
-class AliMUONSegment;
+#include <TObject.h>
+#include <TMatrixD.h>
-class AliMUONTrackParam : public TObject {
+class AliMUONVCluster;
+
+class AliMUONTrackParam : public TObject
+{
public:
- AliMUONTrackParam(){
- // Constructor
- ;} // Constructor
- virtual ~AliMUONTrackParam(){
- // Destructor
- ;} // Destructor
+ AliMUONTrackParam(); // Constructor
+ virtual ~AliMUONTrackParam(); // Destructor
+
+ AliMUONTrackParam(const AliMUONTrackParam& theMUONTrackParam);
+ AliMUONTrackParam& operator=(const AliMUONTrackParam& theMUONTrackParam);
// Get and Set methods for data
- Double_t GetInverseBendingMomentum(void);
- void SetInverseBendingMomentum(Double_t InverseBendingMomentum);
- Double_t GetBendingSlope(void);
- void SetBendingSlope(Double_t BendingSlope);
- Double_t GetNonBendingSlope(void);
- void SetNonBendingSlope(Double_t NonBendingSlope);
- Double_t GetZ(void);
- void SetZ(Double_t Z);
- Double_t GetBendingCoor(void);
- void SetBendingCoor(Double_t BendingCoor);
- Double_t GetNonBendingCoor(void);
- void SetNonBendingCoor(Double_t NonBendingCoor);
-
- void ExtrapToZ(Double_t Z);
- void ExtrapToStation(Int_t Station, AliMUONTrackParam *TrackParam);
- void ExtrapToVertex(); // extrapolation to vertex through the absorber
- void BransonCorrection(); // makes Branson correction
- Double_t TotalMomentumEnergyLoss(Double_t rLimit, Double_t pTotal, Double_t theta, Double_t xEndAbsorber, Double_t yEndAbsorber); // returns total momentum after energy loss correction in the absorber
-
- protected:
+ /// return Z coordinate (cm)
+ Double_t GetZ() const {return fZ;}
+ /// set Z coordinate (cm)
+ void SetZ(Double_t z) {fZ = z;}
+ /// return non bending coordinate (cm)
+ Double_t GetNonBendingCoor() const {return fParameters(0,0);}
+ /// set non bending coordinate (cm)
+ void SetNonBendingCoor(Double_t nonBendingCoor) {fParameters(0,0) = nonBendingCoor;}
+ /// return non bending slope (cm ** -1)
+ Double_t GetNonBendingSlope() const {return fParameters(1,0);}
+ /// set non bending slope (cm ** -1)
+ void SetNonBendingSlope(Double_t nonBendingSlope) {fParameters(1,0) = nonBendingSlope;}
+ /// return bending coordinate (cm)
+ Double_t GetBendingCoor() const {return fParameters(2,0);}
+ /// set bending coordinate (cm)
+ void SetBendingCoor(Double_t bendingCoor) {fParameters(2,0) = bendingCoor;}
+ /// return bending slope (cm ** -1)
+ Double_t GetBendingSlope() const {return fParameters(3,0);}
+ /// set bending slope (cm ** -1)
+ void SetBendingSlope(Double_t bendingSlope) {fParameters(3,0) = bendingSlope;}
+ /// return inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
+ Double_t GetInverseBendingMomentum() const {return fParameters(4,0);}
+ /// set inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
+ void SetInverseBendingMomentum(Double_t inverseBendingMomentum) {fParameters(4,0) = inverseBendingMomentum;}
+ /// return the charge (assumed forward motion)
+ Double_t GetCharge() const {return TMath::Sign(1.,fParameters(4,0));}
+ /// set the charge (assumed forward motion)
+ void SetCharge(Double_t charge) {if (charge*fParameters(4,0) < 0.) fParameters(4,0) *= -1.;}
+
+ /// return track parameters
+ const TMatrixD& GetParameters() const {return fParameters;}
+ /// set track parameters
+ void SetParameters(const TMatrixD& parameters) {fParameters = parameters;}
+ /// add track parameters
+ void AddParameters(const TMatrixD& parameters) {fParameters += parameters;}
+
+ 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
+
+ /// return kTRUE if the covariance matrix exist, kFALSE if not
+ Bool_t CovariancesExist() const {return (fCovariances) ? kTRUE : kFALSE;}
+
+ const TMatrixD& GetCovariances() const;
+ void SetCovariances(const TMatrixD& covariances);
+ void SetCovariances(const Double_t matrix[5][5]);
+ void SetVariances(const Double_t matrix[5][5]);
+ void DeleteCovariances();
+
+ const TMatrixD& GetPropagator() const;
+ void ResetPropagator();
+ void UpdatePropagator(const TMatrixD& propagator);
+
+ const TMatrixD& GetExtrapParameters() const;
+ void SetExtrapParameters(const TMatrixD& parameters);
+
+ const TMatrixD& GetExtrapCovariances() const;
+ void SetExtrapCovariances(const TMatrixD& covariances);
+
+ const TMatrixD& GetSmoothParameters() const;
+ void SetSmoothParameters(const TMatrixD& parameters);
+
+ const TMatrixD& GetSmoothCovariances() const;
+ void SetSmoothCovariances(const TMatrixD& covariances);
+
+ /// get pointeur to associated cluster
+ AliMUONVCluster* GetClusterPtr() const {return fClusterPtr;}
+ void SetClusterPtr(AliMUONVCluster* cluster, Bool_t owner = kFALSE);
+
+ /// return kTRUE if the associated cluster can be removed from the track it belongs to
+ Bool_t IsRemovable() const {return fRemovable;}
+ /// set the flag telling whether the associated cluster can be removed from the track it belongs to or not
+ void SetRemovable(Bool_t removable) {fRemovable = removable;}
+
+ /// return the chi2 of the track when the associated cluster was attached
+ Double_t GetTrackChi2() const {return fTrackChi2;}
+ /// set the chi2 of the track when the associated cluster was attached
+ void SetTrackChi2(Double_t chi2) {fTrackChi2 = chi2;}
+ /// return the local chi2 of the associated cluster with respect to the track
+ Double_t GetLocalChi2() const {return fLocalChi2;}
+ /// set the local chi2 of the associated cluster with respect to the track
+ void SetLocalChi2(Double_t chi2) {fLocalChi2 = chi2;}
+
+ /// necessary for sorting TClonesArray of AliMUONTrackParam
+ Bool_t IsSortable () const {return kTRUE;}
+ Int_t Compare(const TObject* trackParam) const;
+
+ Bool_t CompatibleTrackParam(const AliMUONTrackParam &trackParam, Double_t sigma2Cut, Double_t &normChi2) const;
+
+ virtual void Print(Option_t* opt="") const;
+
+ virtual void Clear(Option_t* opt="");
+
private:
- Double_t fInverseBendingMomentum; // Inverse bending momentum (GeV/c ** -1)
- 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)
-
- void SetGeant3Parameters(Double_t *VGeant3, Double_t ForwardBackward);
- void GetFromGeant3Parameters(Double_t *VGeant3, Double_t Charge);
-
- ClassDef(AliMUONTrackParam, 1) // Class definition in ROOT context
- };
+
+ Double_t fZ; ///< Z coordinate (cm)
+
+ /// Track parameters ordered as follow: <pre>
+ /// X = Non bending coordinate (cm)
+ /// SlopeX = Non bending slope (cm ** -1)
+ /// Y = Bending coordinate (cm)
+ /// SlopeY = Bending slope (cm ** -1)
+ /// InvP_yz = Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion) </pre>
+ TMatrixD fParameters; ///< \brief Track parameters
+
+ /// Covariance matrix of track parameters, ordered as follow: <pre>
+ /// <X,X> <X,SlopeX> <X,Y> <X,SlopeY> <X,InvP_yz>
+ /// <X,SlopeX> <SlopeX,SlopeX> <Y,SlopeX> <SlopeX,SlopeY> <SlopeX,InvP_yz>
+ /// <X,Y> <Y,SlopeX> <Y,Y> <Y,SlopeY> <Y,InvP_yz>
+ /// <X,SlopeY> <SlopeX,SlopeY> <Y,SlopeY> <SlopeY,SlopeY> <SlopeY,InvP_yz>
+ /// <X,InvP_yz> <SlopeX,InvP_yz> <Y,InvP_yz> <SlopeY,InvP_yz> <InvP_yz,InvP_yz> </pre>
+ mutable TMatrixD *fCovariances; ///< \brief Covariance matrix of track parameters
+
+ mutable TMatrixD *fPropagator; //!< Jacobian used to extrapolate the track parameters and covariances to the actual z position
+ mutable TMatrixD *fExtrapParameters; //!< Track parameters extrapolated to the actual z position (not filtered by Kalman)
+ mutable TMatrixD *fExtrapCovariances; //!< Covariance matrix extrapolated to the actual z position (not filtered by Kalman)
+
+ mutable TMatrixD *fSmoothParameters; //!< Track parameters obtained using smoother
+ mutable TMatrixD *fSmoothCovariances; //!< Covariance matrix obtained using smoother
+
+ AliMUONVCluster *fClusterPtr; //!< Pointer to associated cluster if any
+ Bool_t fOwnCluster; //!< Ownership of the associated cluster
+
+ Bool_t fRemovable; //!< kTRUE if the associated cluster can be removed from the track it belongs to
+
+ Double_t fTrackChi2; //!< Chi2 of the track when the associated cluster was attached
+ Double_t fLocalChi2; //!< Local chi2 of the associated cluster with respect to the track
+
+ ClassDef(AliMUONTrackParam, 4) // Track parameters in ALICE dimuon spectrometer
+};
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff