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VertexerZ updated: no histograms for Z finding, new definition of errors
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006b5f7f 1#ifndef ALIITSTRACKV2_H
2#define ALIITSTRACKV2_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6//-------------------------------------------------------------------------
7// ITS Track Class
8//
9// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
a9a2d814 10// dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
006b5f7f 11//-------------------------------------------------------------------------
12
006b5f7f 13#include <AliKalmanTrack.h>
006b5f7f 14#include "AliITSrecoV2.h"
15
83d73500 16class AliESDtrack;
006b5f7f 17
18//_____________________________________________________________________________
8676d691 19class AliITStrackV2 : public AliKalmanTrack {
006b5f7f 20public:
22b13da0 21 AliITStrackV2();
67c3dcbe 22 AliITStrackV2(AliESDtrack& t,Bool_t c=kFALSE) throw (const Char_t *);
006b5f7f 23 AliITStrackV2(const AliITStrackV2& t);
6c94f330 24
25 Bool_t CorrectForMaterial(Double_t d, Double_t x0=21.82) {
26 return AliExternalTrackParam::CorrectForMaterial(d,x0,GetMass());
27 }
28 Bool_t PropagateTo(Double_t xr, Double_t d, Double_t x0=21.82);
29 Double_t GetPredictedChi2(const AliCluster *cluster) const;
30 Bool_t Update(const AliCluster *cl, Double_t chi2, Int_t i);
31
32 Bool_t
33 PropagateToVertex(const AliESDVertex *v,Double_t d=0.,Double_t x0=0.);
34 Bool_t Propagate(Double_t alpha, Double_t xr);
35 Bool_t Improve(Double_t x0,Double_t xyz[3],Double_t ers[3]);
36
7f6ddf58 37 void SetdEdx(Double_t dedx) {fdEdx=dedx;}
a9a2d814 38 void SetSampledEdx(Float_t q, Int_t i);
b9671574 39 Float_t GetSampledEdx(Int_t i) const {return fdEdxSample[i];}
a9a2d814 40 void CookdEdx(Double_t low=0., Double_t up=0.51);
006b5f7f 41 void SetDetectorIndex(Int_t i) {SetLabel(i);}
7f6ddf58 42 void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
15dd636f 43 void UpdateESDtrack(ULong_t flags) const;
e43c066c 44
1aedd96e 45 AliESDtrack *GetESDtrack() const {return fESDtrack;}
e43c066c 46
006b5f7f 47 Int_t GetDetectorIndex() const {return GetLabel();}
7f6ddf58 48 Double_t GetdEdx() const {return fdEdx;}
83d73500 49 Double_t GetPIDsignal() const {return GetdEdx();}
6c94f330 50 Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
51 Double_t GetD(Double_t x, Double_t y) const {
52 return AliExternalTrackParam::GetD(x,y,GetBz());
53 }
54 void GetDZ(Double_t xv, Double_t yv, Double_t zv, Float_t dz[2]) const {
55 return AliExternalTrackParam::GetDZ(xv,yv,zv,GetBz(),dz);
56 }
57
58 Bool_t GetGlobalXYZat(Double_t r,Double_t &x,Double_t &y,Double_t &z) const;
59
006b5f7f 60 Int_t Compare(const TObject *o) const;
006b5f7f 61 Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
6c94f330 62 Bool_t Invariant() const;
ef7253ac 63
64 void SetExtraCluster(Int_t i, Int_t idx) {fIndex[kMaxLayer+i]=idx;}
65 Int_t GetExtraCluster(Int_t i) const {return fIndex[kMaxLayer+i];}
c84a5e9e 66
6c94f330 67protected:
68 Double_t GetBz() const ;
69 Double_t fdEdx; // dE/dx
70 Float_t fdEdxSample[4]; // array of dE/dx samples b.b.
15dd636f 71
ef7253ac 72 Int_t fIndex[2*kMaxLayer]; // indices of associated clusters
15dd636f 73
ef7253ac 74 AliESDtrack *fESDtrack; //! pointer to the connected ESD track
006b5f7f 75
6c94f330 76private:
77 AliITStrackV2 &operator=(const AliITStrackV2 &tr);
78 ClassDef(AliITStrackV2,6) //ITS reconstructed track
79};
a9a2d814 80
23efe5f1 81inline
82void AliITStrackV2::SetSampledEdx(Float_t q, Int_t i) {
83 //----------------------------------------------------------------------
a9a2d814 84 // This function stores dEdx sample corrected for the track segment length
85 // Origin: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
23efe5f1 86 //----------------------------------------------------------------------
a9a2d814 87 if (i<0) return;
88 if (i>3) return;
23efe5f1 89 Double_t s=GetSnp(), t=GetTgl();
23efe5f1 90 q *= TMath::Sqrt((1-s*s)/(1+t*t));
91 fdEdxSample[i]=q;
23efe5f1 92}
c84a5e9e 93
006b5f7f 94#endif
95
96