1 #ifndef ALIKALMANTRACK_H
2 #define ALIKALMANTRACK_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
9 //-------------------------------------------------------------------------
10 // Class AliKalmanTrack
12 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
13 //-------------------------------------------------------------------------
19 class AliKalmanTrack : public TObject {
22 AliKalmanTrack(const AliKalmanTrack &t);
24 virtual ~AliKalmanTrack(){};
25 void SetLabel(Int_t lab) {fLab=lab;}
27 Bool_t IsSortable() const {return kTRUE;}
28 Int_t GetLabel() const {return fLab;}
29 Double_t GetChi2() const {return fChi2;}
30 Double_t GetMass() const {return fMass;}
31 Int_t GetNumberOfClusters() const {return fN;}
32 virtual Int_t GetClusterIndex(Int_t) const { //reserved for AliTracker
33 Warning("GetClusterIndex(Int_t)","Method must be overloaded !\n");
36 virtual Double_t GetPIDsignal() const {
37 Warning("GetPIDsignal()","Method must be overloaded !\n");
41 virtual Double_t GetDCA(const AliKalmanTrack *p,Double_t &xthis,Double_t &xp) const;
43 Double_t PropagateToDCA(AliKalmanTrack *p, Double_t d=0., Double_t x0=0.);
44 virtual Double_t GetAlpha() const {
45 Warning("GetAlpha()","Method must be overloaded !\n");
48 virtual Double_t GetSigmaY2() const {
49 Warning("GetSigmaY2()","Method must be overloaded !\n");
52 virtual Double_t GetSigmaZ2() const {
53 Warning("GetSigmaZ2()","Method must be overloaded !\n");
57 virtual Int_t Compare(const TObject *) const {return 0;}
59 virtual void GetExternalParameters(Double_t &/*xr*/, Double_t /*x*/[5]) const {}
60 virtual void GetExternalCovariance(Double_t /*cov*/[15]) const {}
62 virtual Double_t GetX() const;
63 virtual Double_t GetdEdx() const;
65 virtual Double_t GetY() const;
66 virtual Double_t GetZ() const;
67 virtual Double_t GetSnp() const;
68 virtual Double_t GetTgl() const;
69 virtual Double_t Get1Pt() const;
71 virtual Double_t Phi() const;
72 virtual Double_t SigmaPhi() const;
73 virtual Double_t Theta() const;
74 virtual Double_t SigmaTheta() const;
75 virtual Double_t Eta() const;
76 virtual Double_t Px() const;
77 virtual Double_t Py() const;
78 virtual Double_t Pz() const;
79 virtual Double_t Pt() const;
80 virtual Double_t SigmaPt() const;
81 virtual Double_t P() const;
83 virtual Double_t GetPredictedChi2(const AliCluster *) const {return 0.;}
85 Int_t PropagateTo(Double_t /*xr*/, Double_t /*x0*/, Double_t /*rho*/) {return 0;}
87 Int_t PropagateToPrimVertex(Double_t /*x0*/,Double_t /*rho*/){return 0;}
89 virtual Int_t Update(const AliCluster*, Double_t /*chi2*/, UInt_t) {return 0;}
91 static void SetConvConst(Double_t cc) {fgConvConst=cc;}
92 static void SetConvConst();
93 static Double_t GetConvConst() {return fgConvConst;}
95 static void SetMagneticField(Double_t f) {// f - Magnetic field in T
96 fgConvConst=100/0.299792458/f;
98 Double_t GetMagneticField() const {return 100/0.299792458/fgConvConst;}
100 // Time integration (S.Radomski@gsi.de)
101 void StartTimeIntegral();
102 void SetIntegratedLength(Double_t l) {fIntegratedLength=l;}
103 void SetIntegratedTimes(const Double_t *times);
105 Bool_t IsStartedTimeIntegral() const {return fStartTimeIntegral;}
106 void AddTimeStep(Double_t length);
107 void GetIntegratedTimes(Double_t *times) const;
108 Double_t GetIntegratedTime(Int_t pdg) const;
109 Double_t GetIntegratedLength() const {return fIntegratedLength;}
110 void PrintTime() const;
114 virtual Int_t PropagateToVertex(Double_t =0., Double_t =0.) {
115 Fatal("PropagateToVertex","Not implemented!\n");return -99;}
119 void SetChi2(Double_t chi2) {fChi2=chi2;}
120 void SetMass(Double_t mass) {fMass=mass;}
121 void SetNumberOfClusters(Int_t n) {fN=n;}
124 Int_t fLab; // track label
125 Double_t fChi2; // total chi2 value for this track
126 Double_t fMass; // mass hypothesis
127 Int_t fN; // number of associated clusters
129 static Double_t fgConvConst; //conversion constant cm -> GeV/c
131 // variables for time integration (S.Radomski@gsi.de)
132 static const Int_t fgkTypes = 5; // Number of track types (e,mu,pi,k,p)
133 Bool_t fStartTimeIntegral; // indicator wether integrate time
134 Double_t fIntegratedTime[5]; // integrated time
135 Double_t fIntegratedLength; // integrated length
137 ClassDef(AliKalmanTrack,2) // Reconstructed track