- Added track parameters at DCA in AliESDMuonTrack
[u/mrichter/AliRoot.git] / MUON / AliMUONTrackParam.h
... / ...
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1#ifndef ALIMUONTRACKPARAM_H
2#define ALIMUONTRACKPARAM_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/*$Id$*/
7// Revision of includes 07/05/2004
8
9/// \ingroup rec
10/// \class AliMUONTrackParam
11/// \brief Track parameters in ALICE dimuon spectrometer
12///
13////////////////////////////////////////////////////
14/// Track parameters in ALICE dimuon spectrometer
15////////////////////////////////////////////////////
16
17#include <TObject.h>
18#include <TMatrixD.h>
19
20class AliMUONVCluster;
21class AliESDMuonTrack;
22
23class AliMUONTrackParam : public TObject
24{
25 public:
26 AliMUONTrackParam(); // Constructor
27 virtual ~AliMUONTrackParam(); // Destructor
28
29 AliMUONTrackParam(const AliMUONTrackParam& theMUONTrackParam);
30 AliMUONTrackParam& operator=(const AliMUONTrackParam& theMUONTrackParam);
31
32 void GetParamFrom(const AliESDMuonTrack& esdMuonTrack);
33 void SetParamFor(AliESDMuonTrack& esdMuonTrack) const;
34 void GetParamFromDCA(const AliESDMuonTrack& esdMuonTrack);
35 void SetParamForDCA(AliESDMuonTrack& esdMuonTrack) const;
36 void GetParamFromUncorrected(const AliESDMuonTrack& esdMuonTrack);
37 void SetParamForUncorrected(AliESDMuonTrack& esdMuonTrack) const;
38
39 void GetCovFrom(const AliESDMuonTrack& esdMuonTrack);
40 void SetCovFor(AliESDMuonTrack& esdMuonTrack) const;
41
42 // Get and Set methods for data
43 /// return Z coordinate (cm)
44 Double_t GetZ() const {return fZ;}
45 /// set Z coordinate (cm)
46 void SetZ(Double_t z) {fZ = z;}
47 /// return non bending coordinate (cm)
48 Double_t GetNonBendingCoor() const {return fParameters(0,0);}
49 /// set non bending coordinate (cm)
50 void SetNonBendingCoor(Double_t nonBendingCoor) {fParameters(0,0) = nonBendingCoor;}
51 /// return non bending slope (cm ** -1)
52 Double_t GetNonBendingSlope() const {return fParameters(1,0);}
53 /// set non bending slope (cm ** -1)
54 void SetNonBendingSlope(Double_t nonBendingSlope) {fParameters(1,0) = nonBendingSlope;}
55 /// return bending coordinate (cm)
56 Double_t GetBendingCoor() const {return fParameters(2,0);}
57 /// set bending coordinate (cm)
58 void SetBendingCoor(Double_t bendingCoor) {fParameters(2,0) = bendingCoor;}
59 /// return bending slope (cm ** -1)
60 Double_t GetBendingSlope() const {return fParameters(3,0);}
61 /// set bending slope (cm ** -1)
62 void SetBendingSlope(Double_t bendingSlope) {fParameters(3,0) = bendingSlope;}
63 /// return inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
64 Double_t GetInverseBendingMomentum() const {return fParameters(4,0);}
65 /// set inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
66 void SetInverseBendingMomentum(Double_t inverseBendingMomentum) {fParameters(4,0) = inverseBendingMomentum;}
67 /// return the charge (assumed forward motion)
68 Double_t GetCharge() const {return TMath::Sign(1.,fParameters(4,0));}
69 /// set the charge (assumed forward motion)
70 void SetCharge(Double_t charge) {if (charge*fParameters(4,0) < 0.) fParameters(4,0) *= -1.;}
71
72 /// return track parameters
73 const TMatrixD& GetParameters() const {return fParameters;}
74 /// set track parameters
75 void SetParameters(const TMatrixD& parameters) {fParameters = parameters;}
76 /// add track parameters
77 void AddParameters(const TMatrixD& parameters) {fParameters += parameters;}
78
79 Double_t Px() const; // return px
80 Double_t Py() const; // return py
81 Double_t Pz() const; // return pz
82 Double_t P() const; // return total momentum
83
84 /// return kTRUE if the covariance matrix exist, kFALSE if not
85 Bool_t CovariancesExist() const {return (fCovariances) ? kTRUE : kFALSE;}
86
87 const TMatrixD& GetCovariances() const;
88 void SetCovariances(const TMatrixD& covariances);
89 void SetCovariances(const Double_t matrix[5][5]);
90 void SetVariances(const Double_t matrix[5][5]);
91 void DeleteCovariances();
92
93 const TMatrixD& GetPropagator() const;
94 void ResetPropagator();
95 void UpdatePropagator(const TMatrixD& propagator);
96
97 const TMatrixD& GetExtrapParameters() const;
98 void SetExtrapParameters(const TMatrixD& parameters);
99
100 const TMatrixD& GetExtrapCovariances() const;
101 void SetExtrapCovariances(const TMatrixD& covariances);
102
103 const TMatrixD& GetSmoothParameters() const;
104 void SetSmoothParameters(const TMatrixD& parameters);
105
106 const TMatrixD& GetSmoothCovariances() const;
107 void SetSmoothCovariances(const TMatrixD& covariances);
108
109 /// get pointeur to associated cluster
110 AliMUONVCluster* GetClusterPtr() const {return fClusterPtr;}
111 /// set pointeur to associated cluster
112 void SetClusterPtr(AliMUONVCluster* cluster, Bool_t owner = kFALSE) {fClusterPtr = cluster; fOwnCluster = owner;}
113
114 /// return kTRUE if the associated cluster can be removed from the track it belongs to
115 Bool_t IsRemovable() const {return fRemovable;}
116 /// set the flag telling whether the associated cluster can be removed from the track it belongs to or not
117 void SetRemovable(Bool_t removable) {fRemovable = removable;}
118
119 /// return kTRUE if the associated cluster alone in its chamber
120 Bool_t IsAloneInChamber() const {return fAloneInChamber;}
121 /// set the flag telling whether the associated hi alone in its chamber or not
122 void SetAloneInChamber(Bool_t aloneInChamber) {fAloneInChamber = aloneInChamber;}
123
124 /// return the chi2 of the track when the associated cluster was attached
125 Double_t GetTrackChi2() const {return fTrackChi2;}
126 /// set the chi2 of the track when the associated cluster was attached
127 void SetTrackChi2(Double_t chi2) {fTrackChi2 = chi2;}
128 /// return the local chi2 of the associated cluster with respect to the track
129 Double_t GetLocalChi2() const {return fLocalChi2;}
130 /// set the local chi2 of the associated cluster with respect to the track
131 void SetLocalChi2(Double_t chi2) {fLocalChi2 = chi2;}
132
133 /// necessary for sorting TClonesArray of AliMUONTrackParam
134 Bool_t IsSortable () const {return kTRUE;}
135 Int_t Compare(const TObject* trackParam) const;
136
137 Bool_t CompatibleTrackParam(const AliMUONTrackParam &trackParam, Double_t sigma2Cut, Double_t &normChi2) const;
138
139 virtual void Print(Option_t* opt="") const;
140
141 virtual void Clear(Option_t* opt="");
142
143 private:
144
145 Double_t fZ; ///< Z coordinate (cm)
146
147 /// Track parameters ordered as follow: <pre>
148 /// X = Non bending coordinate (cm)
149 /// SlopeX = Non bending slope (cm ** -1)
150 /// Y = Bending coordinate (cm)
151 /// SlopeY = Bending slope (cm ** -1)
152 /// InvP_yz = Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion) </pre>
153 TMatrixD fParameters; ///< \brief Track parameters
154
155 /// Covariance matrix of track parameters, ordered as follow: <pre>
156 /// <X,X> <X,SlopeX> <X,Y> <X,SlopeY> <X,InvP_yz>
157 /// <X,SlopeX> <SlopeX,SlopeX> <Y,SlopeX> <SlopeX,SlopeY> <SlopeX,InvP_yz>
158 /// <X,Y> <Y,SlopeX> <Y,Y> <Y,SlopeY> <Y,InvP_yz>
159 /// <X,SlopeY> <SlopeX,SlopeY> <Y,SlopeY> <SlopeY,SlopeY> <SlopeY,InvP_yz>
160 /// <X,InvP_yz> <SlopeX,InvP_yz> <Y,InvP_yz> <SlopeY,InvP_yz> <InvP_yz,InvP_yz> </pre>
161 mutable TMatrixD *fCovariances; ///< \brief Covariance matrix of track parameters
162
163 mutable TMatrixD *fPropagator; //!< Jacobian used to extrapolate the track parameters and covariances to the actual z position
164 mutable TMatrixD *fExtrapParameters; //!< Track parameters extrapolated to the actual z position (not filtered by Kalman)
165 mutable TMatrixD *fExtrapCovariances; //!< Covariance matrix extrapolated to the actual z position (not filtered by Kalman)
166
167 mutable TMatrixD *fSmoothParameters; //!< Track parameters obtained using smoother
168 mutable TMatrixD *fSmoothCovariances; //!< Covariance matrix obtained using smoother
169
170 AliMUONVCluster *fClusterPtr; //!< Pointer to associated cluster if any
171 Bool_t fOwnCluster; //!< Ownership of the associated cluster
172
173 Bool_t fRemovable; //!< kTRUE if the associated cluster can be removed from the track it belongs to
174
175 Bool_t fAloneInChamber; //!< kTRUE if the associated cluster is alone in its chamber
176
177 Double_t fTrackChi2; //!< Chi2 of the track when the associated cluster was attached
178 Double_t fLocalChi2; //!< Local chi2 of the associated cluster with respect to the track
179
180 ClassDef(AliMUONTrackParam, 4) // Track parameters in ALICE dimuon spectrometer
181};
182
183#endif