standardizing access to AliEMCALRecParams through AliEMCALReconstructor
[u/mrichter/AliRoot.git] / EMCAL / AliEMCALTracker.h
CommitLineData
fe17d4cb 1//========================================================================
2// Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved.
3// See cxx source for full Copyright notice
4//========================================================================
5//
6// Class AliEMCALTracker
7// -----------------------
8// Implementation of the track matching method between barrel tracks and
9// EMCAL clusters.
10// Besides algorithm implementation, some cuts are required to be set
11// in order to define, for each track, an acceptance window where clusters
12// are searched to find best match (if any).
13// The class accepts as input an ESD container, and works directly on it,
14// simply setting, for each of its tracks, the fEMCALindex flag, for each
15// track which is matched to a cluster.
16// In order to use method, one must launch PropagateBack().
17//
18// ------------------------------------------------------------------------
19// author: A. Pulvirenti (alberto.pulvirenti@ct.infn.it)
20//=========================================================================
21
22#ifndef ALIEMCALTRACKER_H
23#define ALIEMCALTRACKER_H
24
25#include "AliTracker.h"
6d05130c 26#include "TMath.h"
fe17d4cb 27class TList;
c61f0e70 28class TTree;
fe17d4cb 29class TObjArray;
af885e0f 30class AliESDEvent;
fe17d4cb 31class AliESDCaloCluster;
32class AliEMCALTrack;
33class AliEMCALRecPoint;
c61f0e70 34class AliEMCALGeometry;
fe17d4cb 35
36class AliEMCALTracker : public AliTracker
37{
38public:
39
40 AliEMCALTracker();
41 AliEMCALTracker(const AliEMCALTracker &t);
42 AliEMCALTracker& operator=(const AliEMCALTracker &source);
43
44 virtual ~AliEMCALTracker() {Clear();}
45
46 virtual void Clear(Option_t *option="ALL");
af885e0f 47 virtual Int_t Clusters2Tracks(AliESDEvent*) {return -1;}
8ba062b1 48 void InitParameters();
fe17d4cb 49 virtual Int_t LoadClusters(TTree*);
af885e0f 50 Int_t LoadClusters(AliESDEvent* esd);
51 Int_t LoadTracks(AliESDEvent* esd);
52 virtual Int_t PropagateBack(AliESDEvent* esd);
53 virtual Int_t RefitInward(AliESDEvent*) {return -1;}
fe17d4cb 54 virtual void UnloadClusters();
55 virtual AliCluster* GetCluster(Int_t) const {return NULL;};
c61f0e70 56 TTree* SearchTrueMatches();
fe17d4cb 57 void SetCorrection(Double_t rho, Double_t x0) {fRho=rho;fX0=x0;}
58 void SetCutAlpha(Double_t min, Double_t max) {fCutAlphaMin=min;fCutAlphaMax=max;}
59 void SetCutAngle(Double_t value) {fCutAngle=value;}
60 void SetCutX(Double_t value) {fCutX=value;}
61 void SetCutY(Double_t value) {fCutY=value;}
62 void SetCutZ(Double_t value) {fCutZ=value;}
c61f0e70 63 void SetGeometry(AliEMCALGeometry *geom) {fGeom=geom;}
fe17d4cb 64 void SetMaxDistance(Double_t value) {fMaxDist=value;}
65 void SetNumberOfSteps(Int_t n) {fNPropSteps=n;if(!n)SetTrackCorrectionMode("NONE");}
66 void SetTrackCorrectionMode(Option_t *option);
67
c61f0e70 68 enum {
69 kUnmatched = -99999
70 };
71
fe17d4cb 72 class AliEMCALMatchCluster : public TObject
73 {
74 public:
c61f0e70 75 AliEMCALMatchCluster(Int_t ID, AliEMCALRecPoint *recPoint);
76 AliEMCALMatchCluster(Int_t ID, AliESDCaloCluster *caloCluster);
77 virtual ~AliEMCALMatchCluster() { }
78 //----------------------------------------------------------------------------
b9560ae2 79 Int_t Index() const {return fIndex;}
80 Int_t Label() const {return fLabel;}
81 Double_t X() const {return fX;}
82 Double_t Y() const {return fY;}
83 Double_t Z() const {return fZ;}
84 Double_t Phi() const {return TMath::ATan2(fY, fX);}
fe17d4cb 85 private:
86 Int_t fIndex; // index of cluster in its native container (ESD or TClonesArray)
87 Int_t fLabel; // track label of assigned cluster
88 Double_t fX; // global X position
89 Double_t fY; // global Y position
90 Double_t fZ; // global Z position
91 };
92
93 class AliEMCALMatch : public TObject
94 {
95 public:
c61f0e70 96 AliEMCALMatch();
97 AliEMCALMatch(const AliEMCALMatch& copy);
98 virtual ~AliEMCALMatch() { }
99 //----------------------------------------------------------------------------
fe17d4cb 100 Bool_t& CanBeSaved() {return fCanBeSaved;}
101 Int_t Compare(const TObject *obj) const;
b9560ae2 102 Double_t GetDistance() const {return fDistance;}
103 Double_t GetPt() const {return fPt;}
104 Int_t GetIndexC() const {return fIndexC;}
105 Int_t GetIndexT() const {return fIndexT;}
fe17d4cb 106 Bool_t IsSortable() const {return kTRUE;}
107 void SetIndexC(Int_t icl) {fIndexC=icl;}
108 void SetIndexT(Int_t itr) {fIndexT=itr;}
109 void SetDistance(Double_t dist) {fDistance=dist;}
c61f0e70 110 void SetPt(Double_t pt) {fPt=pt;}
fe17d4cb 111 private:
112 Bool_t fCanBeSaved; // when true, this match can be saved, otherwise it will not be
113 Int_t fIndexC; // cluster index in 'fClusters' array
114 Int_t fIndexT; // track index in 'fTracks' array
115 Double_t fDistance; // track - cluster distance
c61f0e70 116 Double_t fPt; // track pt
fe17d4cb 117 };
118
119private:
120
121 Double_t AngleDiff(Double_t angle1, Double_t angle2);
122 Double_t CheckPair(AliEMCALTrack *tr, AliEMCALMatchCluster *cluster);
123 Double_t CheckPairV2(AliEMCALTrack *tr, AliEMCALMatchCluster *cluster);
c61f0e70 124 Double_t CheckPairV3(AliEMCALTrack *tr, AliEMCALMatchCluster *cluster);
fe17d4cb 125 Int_t CreateMatches();
c61f0e70 126 Bool_t PropagateToEMCAL(AliEMCALTrack *tr);
fe17d4cb 127 Int_t SolveCompetitions();
128
129 enum ETrackCorr {
130 kTrackCorrNone = 0, // do not correct for energy loss
131 kTrackCorrMMB = 1, // use MeanMaterialBudget() function to evaluate correction
132 kTrackCorrFixed = 2 // use fixed "X0" and "rho" parameters to correct
133 };
134
135 Int_t fNPropSteps; // number of propagation steps (when correcting). If =0 no correction is done
136 ETrackCorr fTrackCorrMode; // track correction mode
137
138 Double_t fCutX; // cut on X difference
139 Double_t fCutY; // cut on Y difference
140 Double_t fCutZ; // cut on Z difference
141 Double_t fCutAlphaMin; // cut on difference between track 'alpha' and phi
142 Double_t fCutAlphaMax; // cut on difference between track 'alpha' and phi
143 Double_t fCutAngle; // cut on angle between track projection and cluster
144 Double_t fMaxDist; // maximum allowed total distance between track proj an cluster
145
146 Double_t fRho; // energy correction: density
147 Double_t fX0; // energy correction: radiation length
148
c61f0e70 149 TObjArray *fTracks; //! collection of tracks
fe17d4cb 150 TObjArray *fClusters; //! collection of EMCAL clusters (ESDCaloCluster or EMCALRecPoint)
151 TList *fMatches; //! collection of matches between tracks and clusters
152
c61f0e70 153 AliEMCALGeometry *fGeom; //! EMCAL geometry
154
ba6de5ea 155 ClassDef(AliEMCALTracker, 3) // EMCAL "tracker"
fe17d4cb 156};
157
158#endif