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