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
11 // fixed the interface for the derived reconstructed track classes
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;}
26 void SetFakeRatio(Float_t ratio) {fFakeRatio=ratio;}
28 Bool_t IsSortable() const {return kTRUE;}
29 Int_t GetLabel() const {return fLab;}
30 Float_t GetFakeRatio() const {return fFakeRatio;}
31 Double_t GetChi2() const {return fChi2;}
32 Double_t GetMass() const {return fMass;}
33 Int_t GetNumberOfClusters() const {return fN;}
34 virtual Int_t GetClusterIndex(Int_t) const { //reserved for AliTracker
35 Warning("GetClusterIndex(Int_t)","Method must be overloaded !\n");
38 virtual Double_t GetPIDsignal() const {
39 Warning("GetPIDsignal()","Method must be overloaded !\n");
43 virtual Double_t GetDCA(const AliKalmanTrack *p,Double_t &xthis,Double_t &xp) const;
45 Double_t PropagateToDCA(AliKalmanTrack *p, Double_t d=0., Double_t x0=0.);
46 virtual Double_t GetAlpha() const {
47 Warning("GetAlpha()","Method must be overloaded !\n");
50 virtual Double_t GetSigmaY2() const {
51 Warning("GetSigmaY2()","Method must be overloaded !\n");
54 virtual Double_t GetSigmaZ2() const {
55 Warning("GetSigmaZ2()","Method must be overloaded !\n");
59 virtual Int_t Compare(const TObject *) const {return 0;}
61 virtual void GetExternalParameters(Double_t &/*xr*/, Double_t /*x*/[5]) const {}
62 virtual void GetExternalCovariance(Double_t /*cov*/[15]) const {}
64 virtual Double_t GetX() const;
65 virtual Double_t GetdEdx() const;
67 virtual Double_t GetY() const;
68 virtual Double_t GetZ() const;
69 virtual Double_t GetSnp() const;
70 virtual Double_t GetTgl() const;
71 virtual Double_t Get1Pt() const;
73 virtual Double_t Phi() const;
74 virtual Double_t SigmaPhi() const;
75 virtual Double_t Theta() const;
76 virtual Double_t SigmaTheta() const;
77 virtual Double_t Eta() const;
78 virtual Double_t Px() const;
79 virtual Double_t Py() const;
80 virtual Double_t Pz() const;
81 virtual Double_t Pt() const;
82 virtual Double_t SigmaPt() const;
83 virtual Double_t P() const;
85 virtual Double_t GetPredictedChi2(const AliCluster *) const {return 0.;}
87 PropagateTo(Double_t /*xr*/, Double_t /*x0*/, Double_t /*rho*/) {return 0;}
88 virtual Int_t PropagateToVertex(Double_t /*d*/=0., Double_t /*x0*/=0.)
91 Update(const AliCluster*, Double_t /*chi2*/, UInt_t) {return 0;}
93 static void SetConvConst(Double_t cc) {fgConvConst=cc;}
94 static Double_t GetConvConst() {return fgConvConst;}
96 static void SetMagneticField(Double_t f) {// f - Magnetic field in T
97 fgConvConst=100/0.299792458/f;
99 Double_t GetMagneticField() const {return 100/0.299792458/fgConvConst;}
101 // Time integration (S.Radomski@gsi.de)
102 void StartTimeIntegral();
103 void SetIntegratedLength(Double_t l) {fIntegratedLength=l;}
104 void SetIntegratedTimes(const Double_t *times);
106 Bool_t IsStartedTimeIntegral() const {return fStartTimeIntegral;}
107 void AddTimeStep(Double_t length);
108 void GetIntegratedTimes(Double_t *times) const;
109 Double_t GetIntegratedTime(Int_t pdg) const;
110 Double_t GetIntegratedLength() const {return fIntegratedLength;}
111 void PrintTime() const;
114 void SetChi2(Double_t chi2) {fChi2=chi2;}
115 void SetMass(Double_t mass) {fMass=mass;}
116 void SetNumberOfClusters(Int_t n) {fN=n;}
118 Int_t fLab; // track label
119 Float_t fFakeRatio; // fake ratio
120 Double_t fChi2; // total chi2 value for this track
121 Double_t fMass; // mass hypothesis
122 Int_t fN; // number of associated clusters
124 static Double_t fgConvConst; //conversion constant cm -> GeV/c
126 // variables for time integration (S.Radomski@gsi.de)
127 static const Int_t fgkTypes = 5; // Number of track types (e,mu,pi,k,p)
128 Bool_t fStartTimeIntegral; // indicator wether integrate time
129 Double_t fIntegratedTime[5]; // integrated time
130 Double_t fIntegratedLength; // integrated length
132 ClassDef(AliKalmanTrack,3) // Reconstructed track