From Hongshen
[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//-------------------------------------------------------------------------
32d38de2 9#include "AliTracker.h"
10#include "AliESDEvent.h"
f8832015 11#include "AliITSUSeed.h"
c8d1f258 12#include "AliITSUTrackCond.h"
716ccba7 13#include "AliITSUTrackHyp.h"
08419930 14#include "AliITSUAux.h"
9cdcba2c 15#include <TArrayI.h>
32d38de2 16
17class AliITSUReconstructor;
18class AliITSURecoDet;
c61e50c3 19class AliITSUClusterPix;
0091e9f0 20class AliESDtrack;
e2d2481c 21class AliITSURecoLayer;
32d38de2 22class TTree;
23
c61e50c3 24
32d38de2 25//-------------------------------------------------------------------------
26class AliITSUTrackerGlo : public AliTracker {
27
28 public:
76390254 29 enum {kClus2Tracks,kPropBack,kRefitInw,kNTrackingPhases}; // tracking phases
32d38de2 30 enum { // info from track extrapolation to layer for cluster check
31 kTrXIn ,kTrYIn ,kTrZIn ,kTrPhiIn , // entrance (outer) point on the layer from above
32 kTrXOut,kTrYOut,kTrZOut,kTrPhiOut, // exit (inner) point on the layer
33 kTrPhi0, kTrDPhi, kTrZ0, kTrDZ, // mean phi,dPhi, mean z, dZ (don't change this order)
c61e50c3 34 kNTrImpData};
32d38de2 35 //
f8832015 36 enum {kMissingCluster=0 // no cluster found on this layer
37 ,kTransportFailed=1 // seed did not reach target layer
32d38de2 38 ,kRWCheckFailed =2 // failed to rotate the seed to frame of the layer impact point
39 };
f8832015 40 enum {kStopSearchOnSensor,kClusterNotMatching,kClusterMatching}; // flags for track-to-cluster checks
dd2117a2 41 //
42 enum {kDummyLabel=-3141593};
38997c3c 43 //
32d38de2 44 AliITSUTrackerGlo(AliITSUReconstructor* rec);
45 virtual ~AliITSUTrackerGlo();
46
47 virtual Int_t Clusters2Tracks(AliESDEvent *event);
48 virtual Int_t PropagateBack(AliESDEvent *event);
49 virtual Int_t RefitInward(AliESDEvent *event);
50 virtual Int_t LoadClusters(TTree * treeRP=0);
51 virtual void UnloadClusters();
52 virtual AliCluster* GetCluster(Int_t index) const;
53870004 53 void FlagSplitClusters();
54 Bool_t ContainsSplitCluster(const AliITSUSeed* seed, Int_t maxSize=99999);
55 void PrintSeedClusters(const AliITSUSeed* seed, Option_t* option="");
0ddbf657 56 //
57 Int_t GetCountPronlongationTrials() const {return fCountProlongationTrials;}
58 Int_t GetCountITSin() const {return fCountITSin;}
59 Int_t GetCountITSout() const {return fCountITSout;}
60 Int_t GetCountITSrefit() const {return fCountITSrefit;}
61
0091e9f0 62 //------------------------------------
63 AliITSURecoDet* GetITSInterface() const {return fITS;}
64 //
32d38de2 65 //------------------------------------
66 Bool_t NeedToProlong(AliESDtrack* estTr);
67 void Init(AliITSUReconstructor* rec);
716ccba7 68 void FindTrack(AliESDtrack* esdTr, Int_t esdID);
42c3d4bd 69 void CreateDefaultTrackCond();
6cd80116 70 AliITSUTrackHyp* InitHypothesis(AliESDtrack *esdTr, Int_t esdID);
70cb7fe4 71 Bool_t TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo, Double_t rLim=-1);
72 Bool_t TransportToLayer(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo, Double_t rLim=-1);
b515ad7e 73 Bool_t TransportToLayerX(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo, Double_t xStop);
e7d83d38 74 Bool_t GoToExitFromLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kTRUE);
75 Bool_t GoToExitFromLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kTRUE);
e2d2481c 76 Bool_t GoToEntranceToLayer(AliITSUSeed* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kFALSE);
77 Bool_t GoToEntranceToLayer(AliExternalTrackParam* seed, AliITSURecoLayer* lr, Int_t dir, Bool_t check=kFALSE);
44785f3e 78 Bool_t PropagateSeed(AliITSUSeed *seed, Double_t xToGo, Double_t mass, Double_t maxStep=1.0, Bool_t matCorr=kTRUE);
3e4e3c23 79 Bool_t PropagateSeed(AliExternalTrackParam *seed, Double_t xToGo, Double_t mass, Double_t maxStep=1.0, Bool_t matCorr=kTRUE);
9cdcba2c 80 Double_t RefitTrack(AliExternalTrackParam* trc, Double_t r, Int_t stopCond=0);
e7d83d38 81 Int_t GetTrackingPhase() const {return fTrackPhase;}
82
44785f3e 83 //
b8b59e05 84 void KillSeed(AliITSUSeed* seed, Bool_t branch=kFALSE);
c8d1f258 85 Bool_t NeedToKill(AliITSUSeed* seed, Int_t flag);
c61e50c3 86 Bool_t GetRoadWidth(AliITSUSeed* seed, int ilrA);
9cdcba2c 87 Bool_t CheckBackwardMatching(AliITSUSeed* seed);
f8832015 88 Int_t CheckCluster(AliITSUSeed* seed, Int_t lr, Int_t clID);
89 void AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr);
38997c3c 90 Bool_t AddSeedBranch(AliITSUSeed* seed);
91 void ValidateAllowedBranches(Int_t accMax);
92 void ValidateAllowedCandidates(Int_t ilr, Int_t accMax);
08419930 93 void FlagSeedClusters(const AliITSUSeed* seed, Bool_t flg, UShort_t hypRef);
c61e50c3 94 //
95 AliITSUSeed* NewSeedFromPool(const AliITSUSeed* src=0);
b8b59e05 96 void ResetSeedsPool();
97 void MarkSeedFree(AliITSUSeed* seed );
98
716ccba7 99 AliITSUTrackHyp* GetTrackHyp(Int_t id) const {return (AliITSUTrackHyp*)fHypStore.UncheckedAt(id);}
100 void SetTrackHyp(AliITSUTrackHyp* hyp,Int_t id) {fHypStore.AddAtAndExpand(hyp,id);}
101 void DeleteLastSeedFromPool() {fSeedsPool.RemoveLast();}
08419930 102 void CheckClusterSharingConflicts(AliITSUTrackHyp* hyp);
6cd80116 103 void SaveReducedHypothesesTree(AliITSUTrackHyp* dest);
3e4e3c23 104 void FinalizeHypotheses();
9cdcba2c 105 Bool_t FinalizeHypothesis(AliITSUTrackHyp* hyp);
68a0f687 106 void UpdateESDTrack(AliITSUTrackHyp* hyp,Int_t flag);
dd2117a2 107 void CookMCLabel(AliITSUTrackHyp* hyp);
e7d83d38 108 void SetTrackingPhase(Int_t p) {fTrackPhase = p;}
716ccba7 109 //
b8b59e05 110 protected:
111 TObject*& NextFreeSeed();
112 //
32d38de2 113 private:
b8b59e05 114 //
32d38de2 115 AliITSUTrackerGlo(const AliITSUTrackerGlo&);
116 AliITSUTrackerGlo &operator=(const AliITSUTrackerGlo &tr);
117 //
118 protected:
119 AliITSUReconstructor* fReconstructor; // ITS global reconstructor
3d4dc3e2 120 AliITSURecoDet* fITS; // interface to ITS, borrowed from reconstructor
0091e9f0 121 AliESDtrack* fCurrESDtrack; // current esd track in processing
0ddbf657 122 Int_t fCurrESDtrMClb; // its eventual mc label
32d38de2 123 Double_t fCurrMass; // current track mass
c61e50c3 124 Double_t fTrImpData[kNTrImpData]; // data on track impact on the layer
32d38de2 125 //
0ddbf657 126 Int_t fCountProlongationTrials; // number of TPC seeds
127 Int_t fCountITSin; // number of successful ITSin
128 Int_t fCountITSout; // number of successful ITSout
129 Int_t fCountITSrefit; // number of successful ITSrefit
130 //
c61e50c3 131 // the seeds management to be optimized
716ccba7 132 TObjArray fHypStore; // storage for tracks hypotheses
6cd80116 133 Int_t fLayerMaxCandidates; //! size of tmp candidates array
134 AliITSUSeed** fLayerCandidates;//! array for branches of current track prolongation
38997c3c 135 Int_t fNBranchesAdded; // number of branches created for current seed in prolongation
136 Int_t fNCandidatesAdded; // number of candidates added for current seed in prolongation
6cd80116 137 AliITSUTrackHyp* fCurrHyp; //! hypotheses container for current track
138 AliITSUTrackHyp* fWorkHyp; //! temporary hypothesis for track finding
b8b59e05 139 TClonesArray fSeedsPool; //! pool for seeds
140 TArrayI fFreeSeedsID; //! array of ID's of freed seeds
9cdcba2c 141 TArrayI fESDIndex; //! array of ID's of freed seeds
b8b59e05 142 Int_t fNFreeSeeds; //! number of seeds freed in the pool
143 Int_t fLastSeedID; //! id of the pool seed on which is returned by the NextFreeSeed method
6cd80116 144 Int_t fNLrActive; //! number of active layers
c8d1f258 145 //
42c3d4bd 146 TObjArray fDefTrackConds; //! default tracking conditions
c03e4f8a 147 AliITSUTrackCond* fCurrTrackCond; //! current tracking condition
148 Int_t fCurrActLrID; //! current active layer ID being processed (set only when needed, not guaranteed)
149 AliITSURecoLayer* fCurrLayer; //! current layer being processed (set only when needed, not guaranteed)
150 Int_t fTrackPhase; //! tracking phase
c8d1f258 151 //
e2d2481c 152 static const Double_t fgkToler; // tracking tolerance
153 //
08419930 154#ifdef _ITSU_TUNING_MODE_
53870004 155 // this code is only for special histos needed to extract some control parameters
08419930 156 void BookControlHistos(const char* pref);
157 TObjArray* fCHistoArrCorr;
158 TObjArray* fCHistoArrFake;
c03e4f8a 159 enum {kHResY=0,kHResYP=10,kHResZ=20,kHResZP=30,kHChi2Cl=40,kHChi2Nrm=50,kHBestInBranch=60,kHBestInCand=70};
08419930 160 enum {kHChiMatch,kHChiITSSA}; // custom histos
53870004 161 enum {kHistosPhase=100};
162 //
163#endif
bdb92766 164 //
32d38de2 165 ClassDef(AliITSUTrackerGlo,1) //ITS upgrade tracker
166
167};
f8832015 168
b8b59e05 169//________________________________________
170inline TObject *&AliITSUTrackerGlo::NextFreeSeed()
171{
172 // return next free slot where the seed can be created
173 fLastSeedID = fNFreeSeeds ? fFreeSeedsID.GetArray()[--fNFreeSeeds] : fSeedsPool.GetEntriesFast();
174 // AliInfo(Form("%d",fLastSeedID));
175 return fSeedsPool[ fLastSeedID ];
176 //
177}
178
179//_________________________________________________________________________
180inline AliITSUSeed* AliITSUTrackerGlo::NewSeedFromPool(const AliITSUSeed* src)
181{
182 // create new seed, optionally copying from the source
183 AliITSUSeed* sd = src ? new( NextFreeSeed() ) AliITSUSeed(*src) : new( NextFreeSeed() ) AliITSUSeed();
184 sd->SetPoolID(fLastSeedID);
185 return sd;
186}
187
188//_________________________________________________________________________
189inline void AliITSUTrackerGlo::KillSeed(AliITSUSeed* seed, Bool_t branch)
190{
191 // flag seed as killed, if requested, kill recursively its parents whose sole child is the seed being killed
192 seed->Kill();
193 seed = (AliITSUSeed*)seed->GetParent();
194 if (seed && !seed->DecChildren() && branch) KillSeed(seed,branch);
195}
f8832015 196
38997c3c 197//_________________________________________________________________________
198inline void AliITSUTrackerGlo::AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr)
199{
200 // add new seed prolongation hypothesis
08419930 201#ifdef _ITSU_TUNING_MODE_
202 seed->SetOrdCand(fCurrHyp->GetNSeeds(lr));
203#endif
204 fCurrHyp->AddSeed(seed,lr);
38997c3c 205}
206
32d38de2 207#endif
208