1 #ifndef ALIITSUTRACKERCooked_H
2 #define ALIITSUTRACKERCooked_H
4 //-------------------------------------------------------------------------
5 // The stand-alone ITSU tracker
6 // The pattern recongintion based on the "cooked covariance" approach
7 //-------------------------------------------------------------------------
9 #include "AliTracker.h"
17 class AliITSUClusterPix;
18 class AliITSUTrackCooked;
20 //-------------------------------------------------------------------------
21 class AliITSUTrackerCooked : public AliTracker {
24 kNLayers=7,kMaxClusterPerLayer=9999,kMaxSelected=kMaxClusterPerLayer/9};
25 AliITSUTrackerCooked();
26 virtual ~AliITSUTrackerCooked();
28 // These functions must be implemented
29 Int_t Clusters2Tracks(AliESDEvent *event);
30 Int_t PropagateBack(AliESDEvent *event);
31 Int_t RefitInward(AliESDEvent *event);
32 Int_t LoadClusters(TTree *ct);
33 void UnloadClusters();
35 RefitAt(Double_t x, AliITSUTrackCooked *seed, const AliITSUTrackCooked *t);
37 AliCluster *GetCluster(Int_t index) const;
39 // internal helper classes
43 AliITSUTrackerCooked(const AliITSUTrackerCooked&);
44 // Other protected functions
46 Bool_t AddCookedSeed(const Float_t r1[3], Int_t l1, Int_t i1,
47 const Float_t r2[3], Int_t l2, Int_t i2,
48 const AliCluster *c3,Int_t l3, Int_t i3);
49 void FollowProlongation();
50 Int_t TakeNextProlongation();
51 void ResetTrackToFollow(const AliITSUTrackCooked &t);
52 void ResetBestTrack();
55 AliITSUTrackerCooked &operator=(const AliITSUTrackerCooked &tr);
58 // Internal tracker arrays, layers, modules, etc
59 static AliITSUlayer fgLayers[kNLayers];// Layers
61 TObjArray *fSeeds; // Track seeds
63 Int_t fI; // index of the current layer
64 AliITSUTrackCooked *fBestTrack; // "best" track
65 AliITSUTrackCooked *fTrackToFollow; // followed track
67 ClassDef(AliITSUTrackerCooked,1) //ITSU stand-alone tracker
73 class AliITSUTrackerCooked::AliITSUlayer {
78 void InsertClusters(TClonesArray *clusters, Bool_t seedingLayer);
79 void SetR(Double_t r) {fR=r;}
80 void DeleteClusters();
82 SelectClusters(Float_t zMin,Float_t zMax,Float_t phiMin, Float_t phiMax);
83 const AliCluster *GetNextCluster(Int_t &i);
84 void ResetTrack(const AliITSUTrackCooked &t);
85 Int_t FindClusterIndex(Double_t z) const;
86 Double_t GetR() const {return fR;}
87 AliCluster *GetCluster(Int_t i) const { return fClusters[i]; }
88 Int_t GetNumberOfClusters() const {return fN;}
89 const AliITSUTrackCooked *GetTrack() const {return fTrack;}
92 AliITSUlayer(const AliITSUlayer&);
93 AliITSUlayer &operator=(const AliITSUlayer &tr);
94 Int_t InsertCluster(AliCluster *c);
96 Double_t fR; // mean radius of this layer
98 AliCluster *fClusters[kMaxClusterPerLayer]; //All clusters
99 Int_t fN; //number of clusters
101 Int_t fIndex[kMaxSelected]; // Indices of selected clusters
102 Int_t fNsel; // number of preselected clusters
103 AliITSUTrackCooked *fTrack; // track estimation at this layer