Updates in Lc->V0bachelor analysis (Annalisa)
[u/mrichter/AliRoot.git] / ITS / UPGRADE / AliITSUTrackerGlo.h
CommitLineData
32d38de2 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 */
5
6//-------------------------------------------------------------------------
7// ITS upgrade tracker base class
8//-------------------------------------------------------------------------
9
10#include "AliTracker.h"
11#include "AliESDEvent.h"
f8832015 12#include "AliITSUSeed.h"
c8d1f258 13#include "AliITSUTrackCond.h"
716ccba7 14#include "AliITSUTrackHyp.h"
32d38de2 15
16class AliITSUReconstructor;
17class AliITSURecoDet;
c61e50c3 18class AliITSUClusterPix;
0091e9f0 19class AliESDtrack;
e2d2481c 20class AliITSURecoLayer;
32d38de2 21class TTree;
22
c61e50c3 23
32d38de2 24//-------------------------------------------------------------------------
25class AliITSUTrackerGlo : public AliTracker {
26
27 public:
c51c3124 28 enum {kClus2Tracks,kPropBack,kRefitInw}; // tracking phases
32d38de2 29 enum { // info from track extrapolation to layer for cluster check
30 kTrXIn ,kTrYIn ,kTrZIn ,kTrPhiIn , // entrance (outer) point on the layer from above
31 kTrXOut,kTrYOut,kTrZOut,kTrPhiOut, // exit (inner) point on the layer
32 kTrPhi0, kTrDPhi, kTrZ0, kTrDZ, // mean phi,dPhi, mean z, dZ (don't change this order)
c61e50c3 33 kNTrImpData};
32d38de2 34 //
f8832015 35 enum {kMissingCluster=0 // no cluster found on this layer
36 ,kTransportFailed=1 // seed did not reach target layer
32d38de2 37 ,kRWCheckFailed =2 // failed to rotate the seed to frame of the layer impact point
38 };
f8832015 39 enum {kStopSearchOnSensor,kClusterNotMatching,kClusterMatching}; // flags for track-to-cluster checks
dd2117a2 40 //
41 enum {kDummyLabel=-3141593};
32d38de2 42 AliITSUTrackerGlo(AliITSUReconstructor* rec);
43 virtual ~AliITSUTrackerGlo();
44
45 virtual Int_t Clusters2Tracks(AliESDEvent *event);
46 virtual Int_t PropagateBack(AliESDEvent *event);
47 virtual Int_t RefitInward(AliESDEvent *event);
48 virtual Int_t LoadClusters(TTree * treeRP=0);
49 virtual void UnloadClusters();
50 virtual AliCluster* GetCluster(Int_t index) const;
0091e9f0 51 //------------------------------------
52 AliITSURecoDet* GetITSInterface() const {return fITS;}
53 //
32d38de2 54 //------------------------------------
55 Bool_t NeedToProlong(AliESDtrack* estTr);
56 void Init(AliITSUReconstructor* rec);
716ccba7 57 void FindTrack(AliESDtrack* esdTr, Int_t esdID);
42c3d4bd 58 void CreateDefaultTrackCond();
3e4e3c23 59 Bool_t InitHypothesis(AliESDtrack *esdTr, Int_t esdID);
32d38de2 60 Bool_t TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo);
3e4e3c23 61 Bool_t TransportToLayer(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo);
e7d83d38 62 Bool_t GoToExitFromLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kTRUE);
63 Bool_t GoToExitFromLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kTRUE);
e2d2481c 64 Bool_t GoToEntranceToLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kFALSE);
65 Bool_t GoToEntranceToLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kFALSE);
44785f3e 66 Bool_t PropagateSeed(AliITSUSeed *seed, Double_t xToGo, Double_t mass, Double_t maxStep=1.0, Bool_t matCorr=kTRUE);
3e4e3c23 67 Bool_t PropagateSeed(AliExternalTrackParam *seed, Double_t xToGo, Double_t mass, Double_t maxStep=1.0, Bool_t matCorr=kTRUE);
68a0f687 68 Bool_t RefitTrack(AliITSUTrackHyp* trc, Double_t r, Bool_t stopAtLastCl=kFALSE);
e7d83d38 69 Int_t GetTrackingPhase() const {return fTrackPhase;}
70
44785f3e 71 //
b8b59e05 72 void KillSeed(AliITSUSeed* seed, Bool_t branch=kFALSE);
c8d1f258 73 Bool_t NeedToKill(AliITSUSeed* seed, Int_t flag);
c61e50c3 74 Bool_t GetRoadWidth(AliITSUSeed* seed, int ilrA);
f8832015 75 Int_t CheckCluster(AliITSUSeed* seed, Int_t lr, Int_t clID);
76 void AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr);
c61e50c3 77 //
78 AliITSUSeed* NewSeedFromPool(const AliITSUSeed* src=0);
b8b59e05 79 void ResetSeedsPool();
80 void MarkSeedFree(AliITSUSeed* seed );
81
716ccba7 82 AliITSUTrackHyp* GetTrackHyp(Int_t id) const {return (AliITSUTrackHyp*)fHypStore.UncheckedAt(id);}
83 void SetTrackHyp(AliITSUTrackHyp* hyp,Int_t id) {fHypStore.AddAtAndExpand(hyp,id);}
84 void DeleteLastSeedFromPool() {fSeedsPool.RemoveLast();}
85 void SaveCurrentTrackHypotheses();
3e4e3c23 86 void FinalizeHypotheses();
68a0f687 87 void UpdateESDTrack(AliITSUTrackHyp* hyp,Int_t flag);
dd2117a2 88 void CookMCLabel(AliITSUTrackHyp* hyp);
e7d83d38 89 void SetTrackingPhase(Int_t p) {fTrackPhase = p;}
716ccba7 90 //
b8b59e05 91 protected:
92 TObject*& NextFreeSeed();
93 //
32d38de2 94 private:
b8b59e05 95 //
32d38de2 96 AliITSUTrackerGlo(const AliITSUTrackerGlo&);
97 AliITSUTrackerGlo &operator=(const AliITSUTrackerGlo &tr);
98 //
99 protected:
100 AliITSUReconstructor* fReconstructor; // ITS global reconstructor
3d4dc3e2 101 AliITSURecoDet* fITS; // interface to ITS, borrowed from reconstructor
0091e9f0 102 AliESDtrack* fCurrESDtrack; // current esd track in processing
32d38de2 103 Double_t fCurrMass; // current track mass
c61e50c3 104 Double_t fTrImpData[kNTrImpData]; // data on track impact on the layer
32d38de2 105 //
c61e50c3 106 // the seeds management to be optimized
716ccba7 107 TObjArray fHypStore; // storage for tracks hypotheses
108 AliITSUTrackHyp* fCurrHyp; // hypotheses container for current track
b8b59e05 109 TClonesArray fSeedsPool; //! pool for seeds
110 TArrayI fFreeSeedsID; //! array of ID's of freed seeds
111 Int_t fNFreeSeeds; //! number of seeds freed in the pool
112 Int_t fLastSeedID; //! id of the pool seed on which is returned by the NextFreeSeed method
c8d1f258 113 //
42c3d4bd 114 TObjArray fDefTrackConds; //! default tracking conditions
115 AliITSUTrackCond* fCurrTrackCond; // current tracking condition
c51c3124 116 Int_t fTrackPhase; // tracking phase
8b16dbae 117 Int_t* fClInfo; //! auxiliary track cluster info
c8d1f258 118 //
e2d2481c 119 static const Double_t fgkToler; // tracking tolerance
120 //
32d38de2 121 ClassDef(AliITSUTrackerGlo,1) //ITS upgrade tracker
122
123};
f8832015 124
125//_________________________________________________________________________
126inline void AliITSUTrackerGlo::AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr)
127{
128 // add new seed prolongation hypothesis
716ccba7 129 fCurrHyp->AddSeed(seed,lr);
f8832015 130}
131
b8b59e05 132//________________________________________
133inline TObject *&AliITSUTrackerGlo::NextFreeSeed()
134{
135 // return next free slot where the seed can be created
136 fLastSeedID = fNFreeSeeds ? fFreeSeedsID.GetArray()[--fNFreeSeeds] : fSeedsPool.GetEntriesFast();
137 // AliInfo(Form("%d",fLastSeedID));
138 return fSeedsPool[ fLastSeedID ];
139 //
140}
141
142//_________________________________________________________________________
143inline AliITSUSeed* AliITSUTrackerGlo::NewSeedFromPool(const AliITSUSeed* src)
144{
145 // create new seed, optionally copying from the source
146 AliITSUSeed* sd = src ? new( NextFreeSeed() ) AliITSUSeed(*src) : new( NextFreeSeed() ) AliITSUSeed();
147 sd->SetPoolID(fLastSeedID);
148 return sd;
149}
150
151//_________________________________________________________________________
152inline void AliITSUTrackerGlo::KillSeed(AliITSUSeed* seed, Bool_t branch)
153{
154 // flag seed as killed, if requested, kill recursively its parents whose sole child is the seed being killed
155 seed->Kill();
156 seed = (AliITSUSeed*)seed->GetParent();
157 if (seed && !seed->DecChildren() && branch) KillSeed(seed,branch);
158}
f8832015 159
32d38de2 160#endif
161