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"
14 class AliITSUReconstructor;
16 class AliITSUClusterPix;
21 //-------------------------------------------------------------------------
22 class AliITSUTrackerGlo : public AliTracker {
25 enum { // info from track extrapolation to layer for cluster check
26 kTrXIn ,kTrYIn ,kTrZIn ,kTrPhiIn , // entrance (outer) point on the layer from above
27 kTrXOut,kTrYOut,kTrZOut,kTrPhiOut, // exit (inner) point on the layer
28 kTrPhi0, kTrDPhi, kTrZ0, kTrDZ, // mean phi,dPhi, mean z, dZ (don't change this order)
31 enum {kMissingCluster=0 // no cluster found on this layer
32 ,kTransportFailed=1 // seed did not reach target layer
33 ,kRWCheckFailed =2 // failed to rotate the seed to frame of the layer impact point
35 enum {kStopSearchOnSensor,kClusterNotMatching,kClusterMatching}; // flags for track-to-cluster checks
37 AliITSUTrackerGlo(AliITSUReconstructor* rec);
38 virtual ~AliITSUTrackerGlo();
40 virtual Int_t Clusters2Tracks(AliESDEvent *event);
41 virtual Int_t PropagateBack(AliESDEvent *event);
42 virtual Int_t RefitInward(AliESDEvent *event);
43 virtual Int_t LoadClusters(TTree * treeRP=0);
44 virtual void UnloadClusters();
45 virtual AliCluster* GetCluster(Int_t index) const;
48 //------------------------------------
49 Bool_t NeedToProlong(AliESDtrack* estTr);
50 void Init(AliITSUReconstructor* rec);
51 void FindTrack(AliESDtrack* esdTr);
52 Bool_t InitSeed(AliESDtrack *esdTr);
53 Int_t GetNSeeds(Int_t lr) const {return fSeedsLr[lr].GetEntriesFast();} //RS TOCHECK
54 AliITSUSeed* GetSeed(Int_t lr, Int_t sID) const {return (AliITSUSeed*)fSeedsLr[lr].UncheckedAt(sID);} //RS TOCHECK
55 Bool_t TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo);
56 Bool_t NeedToKill(AliITSUSeed* seed, Int_t flag) {return kFALSE;} // todo
57 void KillSeed(Int_t ilr, Int_t id) {} // todo
58 Bool_t GetRoadWidth(AliITSUSeed* seed, int ilrA);
59 Int_t CheckCluster(AliITSUSeed* seed, Int_t lr, Int_t clID);
60 void AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr);
62 AliITSUSeed* NewSeedFromPool(const AliITSUSeed* src=0);
63 void DeleteLastSeedFromPool() {fSeedsPool.RemoveLast();}
64 void ResetSeedTree(); // RS TOCHECK
68 AliITSUTrackerGlo(const AliITSUTrackerGlo&);
69 AliITSUTrackerGlo &operator=(const AliITSUTrackerGlo &tr);
72 AliITSUReconstructor* fReconstructor; // ITS global reconstructor
73 AliITSURecoDet* fITS; // interface to ITS
74 Double_t fCurrMass; // current track mass
75 Double_t fTrImpData[kNTrImpData]; // data on track impact on the layer
77 // the seeds management to be optimized
78 TObjArray* fSeedsLr; // seeds at each layer
79 TClonesArray fSeedsPool; // pool for seeds
81 ClassDef(AliITSUTrackerGlo,1) //ITS upgrade tracker
85 //_________________________________________________________________________
86 inline void AliITSUTrackerGlo::AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr)
88 // add new seed prolongation hypothesis
89 fSeedsLr[lr].AddLast(seed);