r3 interpolation fix (kt bins)
[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
53870004 6#define _FILL_CONTROL_HISTOS_
7
32d38de2 8//-------------------------------------------------------------------------
9// ITS upgrade tracker base class
10//-------------------------------------------------------------------------
32d38de2 11#include "AliTracker.h"
12#include "AliESDEvent.h"
f8832015 13#include "AliITSUSeed.h"
c8d1f258 14#include "AliITSUTrackCond.h"
716ccba7 15#include "AliITSUTrackHyp.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);
32d38de2 71 Bool_t TransportToLayer(AliITSUSeed* seed, Int_t lFrom, Int_t lTo);
3e4e3c23 72 Bool_t TransportToLayer(AliExternalTrackParam* seed, Int_t lFrom, Int_t lTo);
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);
68a0f687 80 Bool_t RefitTrack(AliITSUTrackHyp* trc, Double_t r, Bool_t stopAtLastCl=kFALSE);
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);
f8832015 87 Int_t CheckCluster(AliITSUSeed* seed, Int_t lr, Int_t clID);
88 void AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr);
38997c3c 89 Bool_t AddSeedBranch(AliITSUSeed* seed);
90 void ValidateAllowedBranches(Int_t accMax);
91 void ValidateAllowedCandidates(Int_t ilr, Int_t accMax);
c03e4f8a 92 void FlagSeedClusters(const AliITSUSeed* seed, Bool_t flg);
c61e50c3 93 //
94 AliITSUSeed* NewSeedFromPool(const AliITSUSeed* src=0);
b8b59e05 95 void ResetSeedsPool();
96 void MarkSeedFree(AliITSUSeed* seed );
97
716ccba7 98 AliITSUTrackHyp* GetTrackHyp(Int_t id) const {return (AliITSUTrackHyp*)fHypStore.UncheckedAt(id);}
99 void SetTrackHyp(AliITSUTrackHyp* hyp,Int_t id) {fHypStore.AddAtAndExpand(hyp,id);}
100 void DeleteLastSeedFromPool() {fSeedsPool.RemoveLast();}
6cd80116 101 void SaveReducedHypothesesTree(AliITSUTrackHyp* dest);
3e4e3c23 102 void FinalizeHypotheses();
68a0f687 103 void UpdateESDTrack(AliITSUTrackHyp* hyp,Int_t flag);
dd2117a2 104 void CookMCLabel(AliITSUTrackHyp* hyp);
e7d83d38 105 void SetTrackingPhase(Int_t p) {fTrackPhase = p;}
716ccba7 106 //
b8b59e05 107 protected:
108 TObject*& NextFreeSeed();
109 //
32d38de2 110 private:
b8b59e05 111 //
32d38de2 112 AliITSUTrackerGlo(const AliITSUTrackerGlo&);
113 AliITSUTrackerGlo &operator=(const AliITSUTrackerGlo &tr);
114 //
115 protected:
116 AliITSUReconstructor* fReconstructor; // ITS global reconstructor
3d4dc3e2 117 AliITSURecoDet* fITS; // interface to ITS, borrowed from reconstructor
0091e9f0 118 AliESDtrack* fCurrESDtrack; // current esd track in processing
0ddbf657 119 Int_t fCurrESDtrMClb; // its eventual mc label
32d38de2 120 Double_t fCurrMass; // current track mass
c61e50c3 121 Double_t fTrImpData[kNTrImpData]; // data on track impact on the layer
32d38de2 122 //
0ddbf657 123 Int_t fCountProlongationTrials; // number of TPC seeds
124 Int_t fCountITSin; // number of successful ITSin
125 Int_t fCountITSout; // number of successful ITSout
126 Int_t fCountITSrefit; // number of successful ITSrefit
127 //
c61e50c3 128 // the seeds management to be optimized
716ccba7 129 TObjArray fHypStore; // storage for tracks hypotheses
6cd80116 130 Int_t fLayerMaxCandidates; //! size of tmp candidates array
131 AliITSUSeed** fLayerCandidates;//! array for branches of current track prolongation
38997c3c 132 Int_t fNBranchesAdded; // number of branches created for current seed in prolongation
133 Int_t fNCandidatesAdded; // number of candidates added for current seed in prolongation
6cd80116 134 AliITSUTrackHyp* fCurrHyp; //! hypotheses container for current track
135 AliITSUTrackHyp* fWorkHyp; //! temporary hypothesis for track finding
b8b59e05 136 TClonesArray fSeedsPool; //! pool for seeds
137 TArrayI fFreeSeedsID; //! array of ID's of freed seeds
138 Int_t fNFreeSeeds; //! number of seeds freed in the pool
139 Int_t fLastSeedID; //! id of the pool seed on which is returned by the NextFreeSeed method
6cd80116 140 Int_t fNLrActive; //! number of active layers
c8d1f258 141 //
42c3d4bd 142 TObjArray fDefTrackConds; //! default tracking conditions
c03e4f8a 143 AliITSUTrackCond* fCurrTrackCond; //! current tracking condition
144 Int_t fCurrActLrID; //! current active layer ID being processed (set only when needed, not guaranteed)
145 AliITSURecoLayer* fCurrLayer; //! current layer being processed (set only when needed, not guaranteed)
146 Int_t fTrackPhase; //! tracking phase
8b16dbae 147 Int_t* fClInfo; //! auxiliary track cluster info
c8d1f258 148 //
e2d2481c 149 static const Double_t fgkToler; // tracking tolerance
150 //
53870004 151#ifdef _FILL_CONTROL_HISTOS_
152 // this code is only for special histos needed to extract some control parameters
153 void BookControlHistos();
154 TObjArray* fCHistoArr;
c03e4f8a 155 enum {kHResY=0,kHResYP=10,kHResZ=20,kHResZP=30,kHChi2Cl=40,kHChi2Nrm=50,kHBestInBranch=60,kHBestInCand=70};
bdb92766 156 enum {kHClShare=0}; // custom histos
53870004 157 enum {kHistosPhase=100};
158 //
159#endif
bdb92766 160 //
32d38de2 161 ClassDef(AliITSUTrackerGlo,1) //ITS upgrade tracker
162
163};
f8832015 164
b8b59e05 165//________________________________________
166inline TObject *&AliITSUTrackerGlo::NextFreeSeed()
167{
168 // return next free slot where the seed can be created
169 fLastSeedID = fNFreeSeeds ? fFreeSeedsID.GetArray()[--fNFreeSeeds] : fSeedsPool.GetEntriesFast();
170 // AliInfo(Form("%d",fLastSeedID));
171 return fSeedsPool[ fLastSeedID ];
172 //
173}
174
175//_________________________________________________________________________
176inline AliITSUSeed* AliITSUTrackerGlo::NewSeedFromPool(const AliITSUSeed* src)
177{
178 // create new seed, optionally copying from the source
179 AliITSUSeed* sd = src ? new( NextFreeSeed() ) AliITSUSeed(*src) : new( NextFreeSeed() ) AliITSUSeed();
180 sd->SetPoolID(fLastSeedID);
181 return sd;
182}
183
184//_________________________________________________________________________
185inline void AliITSUTrackerGlo::KillSeed(AliITSUSeed* seed, Bool_t branch)
186{
187 // flag seed as killed, if requested, kill recursively its parents whose sole child is the seed being killed
188 seed->Kill();
189 seed = (AliITSUSeed*)seed->GetParent();
190 if (seed && !seed->DecChildren() && branch) KillSeed(seed,branch);
191}
f8832015 192
38997c3c 193//_________________________________________________________________________
194inline void AliITSUTrackerGlo::AddProlongationHypothesis(AliITSUSeed* seed, Int_t lr)
195{
196 // add new seed prolongation hypothesis
197 fCurrHyp->AddSeed(seed,lr);
198}
199
32d38de2 200#endif
201