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[u/mrichter/AliRoot.git] / TPC / AliTPCtrack.h
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73042f01 1#ifndef ALITPCTRACK_H
2#define ALITPCTRACK_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
0938c7d3 5/* $Id$ */
6
73042f01 7//-------------------------------------------------------
8// TPC Track Class
9//
10// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
2fc0c115 11//
6c94f330 12// The track parameterization is fixed in the following way:
13// param0: local Y-coordinate of a track (cm)
14// param1: local Z-coordinate of a track (cm)
15// param2: local sine of the track momentum azimuth angle
16// param3: tangent of the track momentum dip angle
17// param4: 1/pt (1/(GeV/c))
2fc0c115 18//
6c94f330 19//-------------------------------------------------------
20
b19a0509 21#include <AliKalmanTrack.h>
73042f01 22#include <TMath.h>
73042f01 23
b9de75e1 24#include "AliTPCreco.h"
51ad6848 25#include "AliExternalTrackParam.h"
83d73500 26class AliESDtrack;
6c94f330 27class AliESDVertex;
9c9d2487 28
73042f01 29//_____________________________________________________________________________
b19a0509 30class AliTPCtrack : public AliKalmanTrack {
73042f01 31public:
9c8948ff 32 AliTPCtrack();
6c94f330 33 AliTPCtrack(Double_t x, Double_t alpha, const Double_t p[5],
34 const Double_t cov[15], Int_t index);
83d73500 35 AliTPCtrack(const AliESDtrack& t);
b19a0509 36 AliTPCtrack(const AliTPCtrack& t);
7c27857f 37 virtual ~AliTPCtrack() {}
77e58468 38
be9c5115 39 Int_t Compare(const TObject *o) const;
40
6c94f330 41 void SetdEdx(Double_t dedx) {fdEdx=dedx;}
42 Double_t GetdEdx() const {return fdEdx;}
43 Double_t GetPIDsignal() const {return GetdEdx();}
9c9d2487 44
b9de75e1 45 Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
b9671574 46 void SetClusterIndex(Int_t i, Int_t idx) {fIndex[i]=idx;}
b9de75e1 47
6c94f330 48 Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
be9c5115 49
6c94f330 50 Double_t GetPredictedChi2(const AliCluster *cluster) const;
51 Bool_t PropagateTo(Double_t xr, Double_t rho=0.9e-3, Double_t x0=28.94);
52 Bool_t Update(const AliCluster *c, Double_t chi2, Int_t i);
53 Bool_t Rotate(Double_t alpha) {
54 return AliExternalTrackParam::Rotate(GetAlpha()+alpha);
55 }
56
57 Bool_t PropagateToVertex(const AliESDVertex *v,
58 Double_t rho=1.2e-3, Double_t x0=36.66);
a91e73bc 59 void ResetClusters() {SetNumberOfClusters(0); SetChi2(0.);}
51ad6848 60 void UpdatePoints();//update points
61 Float_t* GetPoints() {return fPoints;}
6c94f330 62
51584047 63 Float_t Density(Int_t row0, Int_t row1); //calculate cluster density
64 Float_t Density2(Int_t row0, Int_t row1); //calculate cluster density
6c94f330 65 Double_t GetD(Double_t x=0, Double_t y=0) const {
66 return AliExternalTrackParam::GetD(x,y,GetBz());
67 }
51ad6848 68 AliExternalTrackParam & GetReference(){ return fReference;}
69 void UpdateReference(){ new (&fReference) AliExternalTrackParam(*this);}
81e97e0d 70 Int_t GetKinkIndex(Int_t i) const{ return fKinkIndexes[i];}
51ad6848 71 Int_t* GetKinkIndexes() { return fKinkIndexes;}
81e97e0d 72 Int_t GetV0Index(Int_t i) const{ return fV0Indexes[i];}
73 Int_t* GetV0Indexes() { return fV0Indexes;}
73042f01 74
b9671574 75 void SetFirstPoint(Int_t f) {fFirstPoint=f;}
76 void SetLastPoint(Int_t f) {fLastPoint=f;}
77 void SetRemoval(Int_t f) {fRemoval=f;}
78 void SetLab2(Int_t f) {fLab2=f;}
79 void SetKinkIndex(Int_t i, Int_t idx) {fKinkIndexes[i]=idx;}
80 void SetBConstrain(Bool_t b) {fBConstrain=b;}
81 void SetNFoundable(Int_t n) {fNFoundable=n;}
82 void SetNShared(Int_t s) {fNShared=s;}
83
84 Int_t GetFirstPoint() const {return fFirstPoint;}
85 Int_t GetLastPoint() const {return fLastPoint;}
86 Int_t GetRemoval() const {return fRemoval;}
87 Int_t GetLab2() const {return fLab2;}
88 Bool_t GetBConstrain() const {return fBConstrain;}
89 Int_t GetNShared() const {return fNShared;}
90 Int_t GetNFoundable() const {return fNFoundable;}
91
6c94f330 92protected:
93 Double_t GetBz() const;
7f6ddf58 94 Double_t fdEdx; // dE/dx
73042f01 95
51584047 96 Int_t fIndex[kMaxRow]; // indices of associated clusters
51ad6848 97 Float_t fPoints[4]; //first, max dens row end points of the track and max density
2fc0c115 98 // MI addition
99 Float_t fSdEdx; // sigma of dedx
100 //
101 Int_t fNFoundable; //number of foundable clusters - dead zone taken to the account
102 Bool_t fBConstrain; // indicate seeding with vertex constrain
103 Int_t fLastPoint; // last cluster position
104 Int_t fFirstPoint; // first cluster position
105 Int_t fRemoval; // removal factor
106 Int_t fTrackType; // track type - 0 - normal - 1 - kink - 2 -V0 3- double found
107 Int_t fLab2; // index of corresponding track (kink, V0, double)
108 Int_t fNShared; // number of shared points
51ad6848 109 AliExternalTrackParam fReference; // track parameters at the middle of the chamber
2fc0c115 110 Float_t fKinkPoint[12]; //radius, of kink, dfi and dtheta
51ad6848 111 Int_t fKinkIndexes[3]; // kink indexes - minus = mother + daughter
81e97e0d 112 Int_t fV0Indexes[3]; // kink indexes - minus = mother + daughter
24de2d6d 113
6c94f330 114 ClassDef(AliTPCtrack,3) // Time Projection Chamber reconstructed tracks
73042f01 115};
116
73042f01 117#endif
118