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[u/mrichter/AliRoot.git] / MUON / AliMUONTrackParam.h
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a9e2aefa 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/*$Id$*/
30178c30 7// Revision of includes 07/05/2004
a9e2aefa 8
692de412 9/// \ingroup rec
10/// \class AliMUONTrackParam
11/// \brief Track parameters in ALICE dimuon spectrometer
12///
13////////////////////////////////////////////////////
14/// Track parameters in ALICE dimuon spectrometer
15////////////////////////////////////////////////////
a9e2aefa 16
3831f268 17#include <TObject.h>
ea94c18b 18#include <TMatrixD.h>
a9e2aefa 19
ea94c18b 20class AliMUONHitForRec;
211c52eb 21class AliESDMuonTrack;
22
30178c30 23class AliMUONTrackParam : public TObject
24{
a9e2aefa 25 public:
30178c30 26 AliMUONTrackParam(); // Constructor
de2cd600 27 virtual ~AliMUONTrackParam(); // Destructor
61adb9bd 28
de2cd600 29 AliMUONTrackParam(const AliMUONTrackParam& theMUONTrackParam);
30 AliMUONTrackParam& operator=(const AliMUONTrackParam& theMUONTrackParam);
211c52eb 31
32 void GetParamFrom(const AliESDMuonTrack& esdMuonTrack);
ea94c18b 33 void SetParamFor(AliESDMuonTrack& esdMuonTrack) const;
22ccc301 34 void GetParamFromUncorrected(const AliESDMuonTrack& esdMuonTrack);
ea94c18b 35 void SetParamForUncorrected(AliESDMuonTrack& esdMuonTrack) const;
60765b06 36
37 void GetCovFrom(const AliESDMuonTrack& esdMuonTrack);
38 void SetCovFor(AliESDMuonTrack& esdMuonTrack) const;
211c52eb 39
a9e2aefa 40 // Get and Set methods for data
2457f726 41 /// return Z coordinate (cm)
ea94c18b 42 Double_t GetZ() const {return fZ;}
2457f726 43 /// set Z coordinate (cm)
208f139e 44 void SetZ(Double_t z) {fZ = z;}
2457f726 45 /// return non bending coordinate (cm)
ea94c18b 46 Double_t GetNonBendingCoor() const {return fParameters(0,0);}
2457f726 47 /// set non bending coordinate (cm)
ea94c18b 48 void SetNonBendingCoor(Double_t nonBendingCoor) {fParameters(0,0) = nonBendingCoor;}
49 /// return non bending slope (cm ** -1)
50 Double_t GetNonBendingSlope() const {return fParameters(1,0);}
51 /// set non bending slope (cm ** -1)
52 void SetNonBendingSlope(Double_t nonBendingSlope) {fParameters(1,0) = nonBendingSlope;}
53 /// return bending coordinate (cm)
54 Double_t GetBendingCoor() const {return fParameters(2,0);}
55 /// set bending coordinate (cm)
56 void SetBendingCoor(Double_t bendingCoor) {fParameters(2,0) = bendingCoor;}
57 /// return bending slope (cm ** -1)
58 Double_t GetBendingSlope() const {return fParameters(3,0);}
59 /// set bending slope (cm ** -1)
60 void SetBendingSlope(Double_t bendingSlope) {fParameters(3,0) = bendingSlope;}
61 /// return inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
62 Double_t GetInverseBendingMomentum() const {return fParameters(4,0);}
63 /// set inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion)
64 void SetInverseBendingMomentum(Double_t inverseBendingMomentum) {fParameters(4,0) = inverseBendingMomentum;}
65 /// return the charge (assumed forward motion)
66 Double_t GetCharge() const {return TMath::Sign(1.,fParameters(4,0));}
67 /// set the charge (assumed forward motion)
68 void SetCharge(Double_t charge) {if (charge*fParameters(4,0) < 0.) fParameters(4,0) *= -1.;}
208f139e 69
ea94c18b 70 /// return track parameters
71 const TMatrixD& GetParameters() const {return fParameters;}
72 /// set track parameters
73 void SetParameters(const TMatrixD& parameters) {fParameters = parameters;}
74 /// add track parameters
75 void AddParameters(const TMatrixD& parameters) {fParameters += parameters;}
de2cd600 76
6464217e 77 Double_t Px() const; // return px
78 Double_t Py() const; // return py
79 Double_t Pz() const; // return pz
80 Double_t P() const; // return total momentum
a9e2aefa 81
208f139e 82 /// return kTRUE if the covariance matrix exist, kFALSE if not
ea94c18b 83 Bool_t CovariancesExist() const {return (fCovariances) ? kTRUE : kFALSE;}
84
85 const TMatrixD& GetCovariances() const;
86 void SetCovariances(const TMatrixD& covariances);
87 void SetCovariances(const Double_t matrix[5][5]);
88 void SetVariances(const Double_t matrix[5][5]);
89 void DeleteCovariances();
90
91 const TMatrixD& GetPropagator() const;
92 void ResetPropagator();
93 void UpdatePropagator(const TMatrixD& propagator);
94
95 const TMatrixD& GetExtrapParameters() const;
96 void SetExtrapParameters(const TMatrixD& parameters);
97
98 const TMatrixD& GetExtrapCovariances() const;
99 void SetExtrapCovariances(const TMatrixD& covariances);
100
101 const TMatrixD& GetSmoothParameters() const;
102 void SetSmoothParameters(const TMatrixD& parameters);
103
104 const TMatrixD& GetSmoothCovariances() const;
105 void SetSmoothCovariances(const TMatrixD& covariances);
106
107 AliMUONHitForRec* GetHitForRecPtr() const;
108 /// set pointeur to associated HitForRec
109 void SetHitForRecPtr(AliMUONHitForRec* hitForRec) {fHitForRecPtr = hitForRec;}
110
111 /// return kTRUE if the associated hit can be removed from the track it belongs to
112 Bool_t IsRemovable() const {return fRemovable;}
113 /// set the flag telling whether the associated hit can be removed from the track it belongs to or not
114 void SetRemovable(Bool_t removable) {fRemovable = removable;}
115
116 /// return the chi2 of the track when the associated HitForRec was attached
117 Double_t GetTrackChi2() const {return fTrackChi2;}
118 /// set the chi2 of the track when the associated HitForRec was attached
119 void SetTrackChi2(Double_t chi2) {fTrackChi2 = chi2;}
120 /// return the local chi2 of the associated HitForRec with respect to the track
121 Double_t GetLocalChi2() const {return fLocalChi2;}
122 /// set the local chi2 of the associated HitForRec with respect to the track
123 void SetLocalChi2(Double_t chi2) {fLocalChi2 = chi2;}
124
2457f726 125 /// necessary for sorting TClonesArray of TrackHit's
126 Bool_t IsSortable () const {return kTRUE;}
208f139e 127 Int_t Compare(const TObject* trackParam) const;
de2cd600 128
1a38e749 129 virtual void Print(Option_t* opt="") const;
130
686772dc 131 virtual void Clear(Option_t* opt="");
1a38e749 132
a9e2aefa 133 private:
ea94c18b 134
829425a5 135 Double_t fZ; ///< Z coordinate (cm)
208f139e 136
ea94c18b 137 /// Track parameters ordered as follow: <pre>
138 /// X = Non bending coordinate (cm)
139 /// SlopeX = Non bending slope (cm ** -1)
140 /// Y = Bending coordinate (cm)
141 /// SlopeY = Bending slope (cm ** -1)
142 /// InvP_yz = Inverse bending momentum (GeV/c ** -1) times the charge (assumed forward motion) </pre>
143 TMatrixD fParameters; ///< \brief Track parameters
144
b58638a9 145 /// Covariance matrix of track parameters, ordered as follow: <pre>
208f139e 146 /// <X,X> <X,SlopeX> <X,Y> <X,SlopeY> <X,InvP_yz>
147 /// <X,SlopeX> <SlopeX,SlopeX> <Y,SlopeX> <SlopeX,SlopeY> <SlopeX,InvP_yz>
148 /// <X,Y> <Y,SlopeX> <Y,Y> <Y,SlopeY> <Y,InvP_yz>
149 /// <X,SlopeY> <SlopeX,SlopeY> <Y,SlopeY> <SlopeY,SlopeY> <SlopeY,InvP_yz>
b58638a9 150 /// <X,InvP_yz> <SlopeX,InvP_yz> <Y,InvP_yz> <SlopeY,InvP_yz> <InvP_yz,InvP_yz> </pre>
686772dc 151 mutable TMatrixD *fCovariances; ///< \brief Covariance matrix of track parameters
208f139e 152
ea94c18b 153 mutable TMatrixD *fPropagator; //!< Jacobian used to extrapolate the track parameters and covariances to the actual z position
154 mutable TMatrixD *fExtrapParameters; //!< Track parameters extrapolated to the actual z position (not filtered by Kalman)
155 mutable TMatrixD *fExtrapCovariances; //!< Covariance matrix extrapolated to the actual z position (not filtered by Kalman)
156
157 mutable TMatrixD *fSmoothParameters; //!< Track parameters obtained using smoother
158 mutable TMatrixD *fSmoothCovariances; //!< Covariance matrix obtained using smoother
159
de2cd600 160 AliMUONHitForRec *fHitForRecPtr; //!< Pointer to associated HitForRec if any
161
ea94c18b 162 Bool_t fRemovable; //!< kTRUE if the associated hit can be removed from the track it belongs to
163
164 Double_t fTrackChi2; //!< Chi2 of the track when the associated HitForRec was attached
165 Double_t fLocalChi2; //!< Local chi2 of the associated HitForRec with respect to the track
166
167 ClassDef(AliMUONTrackParam, 4) // Track parameters in ALICE dimuon spectrometer
37827b29 168};
a9e2aefa 169
170#endif