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 //-------------------------------------------------------------------------
20 class AliKalmanTrack : public TObject {
23 AliKalmanTrack(const AliKalmanTrack &t);
25 virtual ~AliKalmanTrack(){};
26 void SetLabel(Int_t lab) {fLab=lab;}
28 Bool_t IsSortable() const {return kTRUE;}
29 Int_t GetLabel() const {return fLab;}
30 Double_t GetChi2() const {return fChi2;}
31 Double_t GetMass() const {return fMass;}
32 Int_t GetNumberOfClusters() const {return fN;}
33 virtual Int_t GetClusterIndex(Int_t) const { //reserved for AliTracker
34 Warning("GetClusterIndex(Int_t)","Method must be overloaded !\n");
38 virtual Double_t GetDCA(const AliKalmanTrack *,Double_t &,Double_t &) const;
40 Double_t PropagateToDCA(AliKalmanTrack *, Double_t d=0., Double_t x0=0.);
41 virtual Double_t GetAlpha() const {
42 Warning("GetAlpha()","Method must be overloaded !\n");
45 virtual Double_t GetSigmaY2() const {
46 Warning("GetSigmaY2()","Method must be overloaded !\n");
49 virtual Double_t GetSigmaZ2() const {
50 Warning("GetSigmaZ2()","Method must be overloaded !\n");
54 virtual Int_t Compare(const TObject *) const {return 0;}
56 virtual void GetExternalParameters(Double_t &/*xr*/, Double_t /*x*/[5]) const {}
57 virtual void GetExternalCovariance(Double_t /*cov*/[15]) const {}
59 virtual Double_t GetX() const;
60 virtual Double_t GetdEdx() const;
62 virtual Double_t GetY() const;
63 virtual Double_t GetZ() const;
64 virtual Double_t GetSnp() const;
65 virtual Double_t GetTgl() const;
66 virtual Double_t Get1Pt() const;
68 virtual Double_t Phi() const;
69 virtual Double_t SigmaPhi() const;
70 virtual Double_t Theta() const;
71 virtual Double_t SigmaTheta() const;
72 virtual Double_t Px() const;
73 virtual Double_t Py() const;
74 virtual Double_t Pz() const;
75 virtual Double_t Pt() const;
76 virtual Double_t SigmaPt() const;
77 virtual Double_t P() const;
78 virtual TVector3 Momentum() const;
80 virtual Double_t GetPredictedChi2(const AliCluster *) const {return 0.;}
82 Int_t PropagateTo(Double_t /*xr*/, Double_t /*x0*/, Double_t /*rho*/) {return 0;}
83 virtual Int_t Update(const AliCluster*, Double_t /*chi2*/, UInt_t) {return 0;}
85 static void SetConvConst(Double_t cc) {fgConvConst=cc;}
86 Double_t GetConvConst() const {return fgConvConst;}
88 static void SetMagneticField(Double_t f) {// f - Magnetic field in T
89 fgConvConst=100/0.299792458/f;
91 Double_t GetMagneticField() const {return 100/0.299792458/fgConvConst;}
93 // Time integration (S.Radomski@gsi.de)
94 void StartTimeIntegral();
95 Bool_t IsStartedTimeIntegral() const {return fStartTimeIntegral;}
96 void AddTimeStep(Double_t length);
97 Double_t GetIntegratedTime(Int_t pdg) const;
98 Double_t GetIntegratedLength() const {return fIntegratedLength;}
99 void PrintTime() const;
103 void SetChi2(Double_t chi2) {fChi2=chi2;}
104 void SetMass(Double_t mass) {fMass=mass;}
105 void SetNumberOfClusters(Int_t n) {fN=n;}
108 Int_t fLab; // track label
109 Double_t fChi2; // total chi2 value for this track
110 Double_t fMass; // mass hypothesis
111 Int_t fN; // number of associated clusters
113 static Double_t fgConvConst; //conversion constant cm -> GeV/c
115 // variables for time integration (S.Radomski@gsi.de)
116 static const Int_t fgkTypes = 5; // Number of track types (e,mu,pi,k,p)
117 Bool_t fStartTimeIntegral; // indicator wether integrate time
118 Float_t fIntegratedTime[5]; // intgrated time
119 Float_t fIntegratedLength; // integrated length
121 ClassDef(AliKalmanTrack,2) // Reconstructed track