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 //-------------------------------------------------------------------------
21 class AliKalmanTrack : public TObject {
24 AliKalmanTrack(const AliKalmanTrack &t);
26 virtual ~AliKalmanTrack(){};
27 void SetLabel(Int_t lab) {fLab=lab;}
28 void SetFakeRatio(Float_t ratio) {fFakeRatio=ratio;}
30 Bool_t IsSortable() const {return kTRUE;}
31 Int_t GetLabel() const {return fLab;}
32 Float_t GetFakeRatio() const {return fFakeRatio;}
33 Double_t GetChi2() const {return fChi2;}
34 Double_t GetMass() const {return fMass;}
35 Int_t GetNumberOfClusters() const {return fN;}
36 virtual Int_t GetClusterIndex(Int_t) const { //reserved for AliTracker
37 AliWarning("Method must be overloaded !\n");
40 virtual Double_t GetPIDsignal() const {
41 AliWarning("Method must be overloaded !\n");
45 virtual Double_t GetDCA(const AliKalmanTrack *p,Double_t &xthis,Double_t &xp) const;
47 Double_t PropagateToDCA(AliKalmanTrack *p, Double_t d=0., Double_t x0=0.);
48 virtual Double_t GetAlpha() const {
49 AliWarning("Method must be overloaded !\n");
52 virtual Double_t GetSigmaY2() const {
53 AliWarning("Method must be overloaded !\n");
56 virtual Double_t GetSigmaZ2() const {
57 AliWarning("Method must be overloaded !\n");
61 virtual Int_t Compare(const TObject *) const {return 0;}
63 virtual void GetExternalParameters(Double_t&/*xr*/,Double_t/*x*/[5]) const=0;
64 virtual void GetExternalCovariance(Double_t /*cov*/[15]) const = 0;
66 virtual Double_t GetPredictedChi2(const AliCluster *) const = 0;
67 virtual Int_t PropagateTo(Double_t/*xr*/,Double_t/*x0*/,Double_t/*rho*/) = 0;
68 //virtual Int_t PropagateToVertex(Double_t /*d*/=0., Double_t /*x0*/=0.) = 0;
69 virtual Int_t Update(const AliCluster*, Double_t /*chi2*/, UInt_t) = 0;
71 //static Double_t GetConvConst();
72 static Double_t MeanMaterialBudget(Double_t *start, Double_t *end, Double_t *mparam);
74 // Time integration (S.Radomski@gsi.de)
75 void StartTimeIntegral();
76 void SetIntegratedLength(Double_t l) {fIntegratedLength=l;}
77 void SetIntegratedTimes(const Double_t *times);
79 Bool_t IsStartedTimeIntegral() const {return fStartTimeIntegral;}
80 void AddTimeStep(Double_t length);
81 void GetIntegratedTimes(Double_t *times) const;
82 Double_t GetIntegratedTime(Int_t pdg) const;
83 Double_t GetIntegratedLength() const {return fIntegratedLength;}
84 virtual void GetXYZ(Float_t r[3]) const = 0;
86 static Double_t GetConvConst();
87 void SetNumberOfClusters(Int_t n) {fN=n;}
89 void SaveLocalConvConst();
90 Double_t GetLocalConvConst() const {return fLocalConvConst;}
92 void External2Helix(Double_t helix[6]) const;
94 void SetChi2(Double_t chi2) {fChi2=chi2;}
95 void SetMass(Double_t mass) {fMass=mass;}
97 Int_t fLab; // track label
98 Float_t fFakeRatio; // fake ratio
99 Double_t fChi2; // total chi2 value for this track
100 Double_t fMass; // mass hypothesis
101 Int_t fN; // number of associated clusters
104 Double_t fLocalConvConst; //local conversion "curvature(1/cm) -> pt(GeV/c)"
106 // variables for time integration (S.Radomski@gsi.de)
107 Bool_t fStartTimeIntegral; // indicator wether integrate time
108 Double_t fIntegratedTime[AliPID::kSPECIES]; // integrated time
109 Double_t fIntegratedLength; // integrated length
111 ClassDef(AliKalmanTrack,5) // Reconstructed track