track labels added
[u/mrichter/AliRoot.git] / ITS / UPGRADE / AliITStrackerUpgrade.h
CommitLineData
1d9af2d5 1#ifndef ALIITSTRACKERUPGRADE_H
2#define ALIITSTRACKERUPGRADE_H
3
4
5
6#include "AliITStrackerMI.h"
7#include "AliITSlayerUpgrade.h"
8#include "AliITStrackMI.h"
9
10/* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
11 * See cxx source for full Copyright notice */
12
13/* $Id$ */
14////////////////////////////////////////////////////
15// ITS Upgrade Stand alone tracker class //
16// Authors: A.Mastroserio C.Terrevoli //
17// e-mail:annalisa.mastroserio@cern.ch //
18// cristina.terrevoli@ba.infn.it //
19// tracks are saved as AliITStrackV2 objects //
20////////////////////////////////////////////////////
21
22#include <TClonesArray.h>
23
24class AliITSclusterTable;
25class AliITStrackSA;
db688ae2 26class AliITSsegmentationUpgrade;
1d9af2d5 27class AliESDVertex;
28class AliESDEvent;
29class AliITSVertexer;
30class TTree;
31class TArrayD;
32
33class AliITStrackerUpgrade : public AliITStrackerMI {
34
35
36 public:
37
38 AliITStrackerUpgrade();
39 AliITStrackerUpgrade(const AliITStrackerUpgrade& tracker);
40 AliITStrackerUpgrade& operator=(const AliITStrackerUpgrade& source);
41 virtual ~AliITStrackerUpgrade();
42 virtual Int_t Clusters2Tracks(AliESDEvent *event);
43 Int_t FindTracks(AliESDEvent* event,Bool_t useAllClusters=kFALSE);
44 Int_t PropagateBack(AliESDEvent *event);
45 Int_t CorrectForPipeMaterial(AliITStrackMI *t, TString direction="inward");
46 Int_t RefitInward(AliESDEvent *event);//{return 0;}
47 AliCluster *GetCluster(Int_t index) const;
48
49 AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex,Bool_t onePoint=kFALSE);
50 void StoreTrack(AliITStrackV2 *t,AliESDEvent *event, Bool_t pureSA) /*const*/;
51 Int_t FindTrackLowChiSquare() const;
52 Int_t LoadClusters(TTree *clusTree);
53 void SetVertex(AliESDVertex *vtx){fVert = vtx;}
54 void SetClusterTree(TTree * itscl){fITSclusters = itscl;}
55
56 void SetOutwardFinding() {fInwardFlag=kFALSE;}
57 void SetInwardFinding() {fInwardFlag=kTRUE;}
58 void SetOuterStartLayer(Int_t osl = 0) {
59 if(osl>(fNLayer-2)) AliWarning("Minimum Number of layers is 2. OuterStartLayer set to Nlayers-2");
60 fOuterStartLayer = TMath::Min(fNLayer-2,osl);
61 }
62 Int_t GetOuterStartLayer() const {return fOuterStartLayer;}
63 void SetInnerStartLayer(Int_t isl = 5) {
64 if(isl<1) AliWarning("Minimum Number of layers is 2. InnerStartLayer set to 1");
65 fInnerStartLayer = TMath::Max(1,isl);
66 }
67 Int_t GetInnerStartLayer() const {return fInnerStartLayer;}
68 void SetSAFlag(Bool_t fl){fITSStandAlone=fl;} // StandAlone flag setter
69 Bool_t GetSAFlag() const {return fITSStandAlone;} // StandAlone flag gett
70 void SetFixedWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0);
71 void SetCalculatedWindowSizes(Int_t n=10, Float_t phimin=0.002, Float_t phimax=0.0145, Float_t lambdamin=0.003, Float_t lambdamax=0.008);
72 void UnloadClusters();
73 void SetMinNPoints(Int_t np){fMinNPoints=np;}
74 Int_t GetMinNPoints() const {return fMinNPoints;}
75 void SetMinimumChargeSDDSSD(Float_t minq=0.){fMinQ=minq;}
76 enum {kSAflag=0x8000}; //flag to mark clusters used in the SA tracker
77
78 protected:
79
80 //Initialization
81 void Init();
82 void CreateLayers(Int_t iEvent);
83 void ResetForFinding();
84 void UpdatePoints();
85 Bool_t SetFirstPoint(Int_t lay, Int_t clu, Double_t* primaryVertex);
86 static Double_t Curvature(Double_t x1,Double_t y1,Double_t x2,Double_t y2,
87 Double_t x3,Double_t y3);
88
89 Double_t ChoosePoint(Double_t p1, Double_t p2, Double_t pp);
90
91 static Int_t FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2,
92 Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2);
93 static Int_t FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2,
94 Float_t x3, Float_t y3,Float_t& a, Float_t& b,
95 Float_t& c);
96
0a64515a 97 Int_t FindLabel(AliITStrackV2* track) const;
1d9af2d5 98
99 Int_t SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow,
100 AliITStrackSA* trs,Double_t zvertex,Int_t flagp);
101
102 void GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda,Double_t &x,Double_t &y,Double_t &z,Double_t* vertex);
103 void GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz);
104 AliITSclusterTable* GetClusterCoord(Int_t layer,Int_t n) const {return (AliITSclusterTable*)fCluCoord[layer]->UncheckedAt(n);}
105 void RemoveClusterCoord(Int_t layer, Int_t n) {fCluCoord[layer]->RemoveAt(n);fCluCoord[layer]->Compress();}
106 Bool_t RefitAtBase(Double_t x, AliITStrackMI *track,
107 const Int_t *clusters);
108 Int_t UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t layer) const;
109 Int_t CorrectForLayerMaterial(AliITStrackMI *t, Int_t layerindex, Double_t oldGlobXYZ[3], TString direction="inward");
110 Double_t GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer);
111 static Int_t GetError(Int_t layer,const AliITSRecPoint*cl,
112 Float_t tgl,Float_t tgphitr,Float_t expQ,
113 Float_t &erry,Float_t &errz,Float_t &covyz,
114 Bool_t addMisalErr=kTRUE);
115
116 static Int_t GetErrorOrigRecPoint(const AliITSRecPoint*cl,
117 Float_t &erry,Float_t &errz,Float_t &covyz);
118 static void GetNTeor(Int_t layer,const AliITSRecPoint* cl,
119 Float_t tgl,Float_t tgphitr,
120 Float_t &ny,Float_t &nz);
121
122 Int_t fNLayer;//number of layer in ITSUpgrade
123 Double_t fPhiEstimate; //Estimation of phi angle on next layer
124 Bool_t fITSStandAlone; //Tracking is performed in the ITS alone if kTRUE
125 Float_t fPoint1[2]; //! coord. of 1-st point to evaluate the curvature
126 Float_t fPoint2[2]; //! coord. of 2-nd point to evaluate the curvature
127 Float_t fPoint3[2]; //! coord. of 3-rd point to evaluate the curvature
128 Float_t fPointc[2]; //! current point coord (for curvature eval.)
129 Double_t fLambdac; //! current value of the Lambda angle in the window
130 Double_t fPhic; //! current value of the Phi angle in the window
131 Float_t fCoef1; //! param. of the equation of the circ. approx a layer
132 Float_t fCoef2; //! param. of the equation of the circ. approx a layer
133 Float_t fCoef3; //! param. of the equation of the circ. approx a layer
134 Int_t fNloop; // Number of iterqations on phi and lambda windows
135 Double_t *fPhiWin; // phi window sizes
136 Double_t *fLambdaWin; // lambda window sizes
137 AliESDVertex *fVert; //! primary vertex
138 AliITSVertexer *fVertexer; //! vertexer
139 TClonesArray *fListOfTracks; //! container for found tracks
140 TClonesArray *fListOfSATracks; //! container for found SA tracks
141 TTree *fITSclusters; //! pointer to ITS tree of clusters
142 Bool_t fInwardFlag; // set to kTRUE for inward track finding
143 Int_t fOuterStartLayer; // Outward search for tracks with <6 points: outer layer to start from
144 Int_t fInnerStartLayer; // Inward search for tracks with <6 points: inner layer to start from
145 Int_t fMinNPoints; // minimum number of clusters for a track
146 Float_t fMinQ; // lower cut on cluster charge (SDD and SSD)
147 AliITSlayerUpgrade** fLayers;
db688ae2 148 AliITSsegmentationUpgrade *fSegmentation;
1d9af2d5 149
150 TClonesArray** fCluLayer; //! array with clusters
151 TClonesArray** fCluCoord; //! array with cluster info
152
db688ae2 153 ClassDef(AliITStrackerUpgrade,2)
1d9af2d5 154};
155
156#endif
157
158