1 #ifndef ALIITSTRACKERU_H
2 #define ALIITSTRACKERU_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 //-------------------------------------------------------------------------
7 // ITS upgrade tracker base class
8 //-------------------------------------------------------------------------
10 #include "AliTracker.h"
11 #include "AliESDEvent.h"
12 #include "AliITSUSeed.h"
13 #include "AliITSUTrackCond.h"
14 #include "AliITSUTrackHyp.h"
16 class AliITSUReconstructor;
18 class AliITSUClusterPix;
24 //-------------------------------------------------------------------------
25 class AliITSUTrackerGlo : public AliTracker {
28 enum { // info from track extrapolation to layer for cluster check
29 kTrXIn ,kTrYIn ,kTrZIn ,kTrPhiIn , // entrance (outer) point on the layer from above
30 kTrXOut,kTrYOut,kTrZOut,kTrPhiOut, // exit (inner) point on the layer
31 kTrPhi0, kTrDPhi, kTrZ0, kTrDZ, // mean phi,dPhi, mean z, dZ (don't change this order)
34 enum {kMissingCluster=0 // no cluster found on this layer
35 ,kTransportFailed=1 // seed did not reach target layer
36 ,kRWCheckFailed =2 // failed to rotate the seed to frame of the layer impact point
38 enum {kStopSearchOnSensor,kClusterNotMatching,kClusterMatching}; // flags for track-to-cluster checks
40 AliITSUTrackerGlo(AliITSUReconstructor* rec);
41 virtual ~AliITSUTrackerGlo();
43 virtual Int_t Clusters2Tracks(AliESDEvent *event);
44 virtual Int_t PropagateBack(AliESDEvent *event);
45 virtual Int_t RefitInward(AliESDEvent *event);
46 virtual Int_t LoadClusters(TTree * treeRP=0);
47 virtual void UnloadClusters();
48 virtual AliCluster* GetCluster(Int_t index) const;
49 //------------------------------------
50 AliITSURecoDet* GetITSInterface() const {return fITS;}
52 //------------------------------------
53 Bool_t NeedToProlong(AliESDtrack* estTr);
54 void Init(AliITSUReconstructor* rec);
55 void FindTrack(AliESDtrack* esdTr, Int_t esdID);
56 Bool_t InitSeed(AliESDtrack *esdTr, Int_t esdID);
57 Bool_t TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo);
58 Bool_t PropagateSeed(AliITSUSeed *seed, Double_t xToGo, Double_t mass, Double_t maxStep=1.0, Bool_t matCorr=kTRUE);
60 Bool_t NeedToKill(AliITSUSeed* seed, Int_t flag);
61 Bool_t GetRoadWidth(AliITSUSeed* seed, int ilrA);
62 Int_t CheckCluster(AliITSUSeed* seed, Int_t lr, Int_t clID);
63 void AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr);
65 AliITSUSeed* NewSeedFromPool(const AliITSUSeed* src=0);
66 AliITSUTrackHyp* GetTrackHyp(Int_t id) const {return (AliITSUTrackHyp*)fHypStore.UncheckedAt(id);}
67 void SetTrackHyp(AliITSUTrackHyp* hyp,Int_t id) {fHypStore.AddAtAndExpand(hyp,id);}
68 void DeleteLastSeedFromPool() {fSeedsPool.RemoveLast();}
69 void SaveCurrentTrackHypotheses();
74 AliITSUTrackerGlo(const AliITSUTrackerGlo&);
75 AliITSUTrackerGlo &operator=(const AliITSUTrackerGlo &tr);
78 AliITSUReconstructor* fReconstructor; // ITS global reconstructor
79 AliITSURecoDet* fITS; // interface to ITS
80 AliESDtrack* fCurrESDtrack; // current esd track in processing
81 Double_t fCurrMass; // current track mass
82 Double_t fTrImpData[kNTrImpData]; // data on track impact on the layer
84 // the seeds management to be optimized
85 TObjArray fHypStore; // storage for tracks hypotheses
86 AliITSUTrackHyp* fCurrHyp; // hypotheses container for current track
87 TClonesArray fSeedsPool; // pool for seeds
89 AliITSUTrackCond fTrCond; // tmp, to be moved to recoparam
91 ClassDef(AliITSUTrackerGlo,1) //ITS upgrade tracker
95 //_________________________________________________________________________
96 inline void AliITSUTrackerGlo::AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr)
98 // add new seed prolongation hypothesis
99 fCurrHyp->AddSeed(seed,lr);
100 printf("*** Adding: "); seed->Print();