Effective C++ warnings
[u/mrichter/AliRoot.git] / ITS / AliITStrackerV2.h
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18856a77 1#ifndef ALIITSTRACKERV2_H
2#define ALIITSTRACKERV2_H
006b5f7f 3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6//-------------------------------------------------------------------------
7// ITS tracker
00a7cc50 8// reads AliITSRecPoint clusters and creates AliITStrackV2 tracks
18856a77 9// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
006b5f7f 10//-------------------------------------------------------------------------
11#include "AliTracker.h"
12#include "AliITSrecoV2.h"
13#include "AliITStrackV2.h"
14
00a7cc50 15class AliITSRecPoint;
c630aafd 16class AliESD;
006b5f7f 17class AliITSgeom;
c630aafd 18class TTree;
006b5f7f 19
20
21//-------------------------------------------------------------------------
22class AliITStrackerV2 : public AliTracker {
23public:
24 AliITStrackerV2():AliTracker(){}
c630aafd 25 AliITStrackerV2(const AliITSgeom *geom);
c219fd63 26 ~AliITStrackerV2(){}
006b5f7f 27 AliCluster *GetCluster(Int_t index) const;
00a7cc50 28 AliITSRecPoint *GetCluster(Int_t l, Int_t c) const {
c219fd63 29 return fgLayers[l].GetCluster(c);
30 }
31 Int_t GetNumberOfClustersLayer(Int_t n) const {
32 return fgLayers[n].GetNumberOfClusters();
33 }
c630aafd 34 Int_t LoadClusters(TTree *cf);
61ab8ea8 35 void UnloadClusters();
c630aafd 36 Int_t Clusters2Tracks(AliESD *event);
c630aafd 37 Int_t PropagateBack(AliESD *event);
c630aafd 38 Int_t RefitInward(AliESD *event);
ef7253ac 39 Bool_t RefitAt(Double_t x, AliITStrackV2 *seed,
40 const AliITStrackV2 *t, Bool_t extra=kFALSE);
7f6ddf58 41 void SetupFirstPass(Int_t *flags, Double_t *cuts=0);
42 void SetupSecondPass(Int_t *flags, Double_t *cuts=0);
43
c0dd5278 44 void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;}
45 void SetLayersNotToSkip(Int_t *l);
46
b87bd7cd 47 void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
48
15dd636f 49 class AliITSdetector {
7f6ddf58 50 public:
51 AliITSdetector(){}
52 AliITSdetector(Double_t r,Double_t phi) {fR=r; fPhi=phi;}
7f6ddf58 53 Double_t GetR() const {return fR;}
54 Double_t GetPhi() const {return fPhi;}
55 private:
56 Double_t fR; // polar coordinates
57 Double_t fPhi; // of this detector
58 };
59
60 class AliITSlayer {
61 public:
c219fd63 62 enum {kNsector=5, kMaxClusterPerSector=kMaxClusterPerLayer/kNsector};
7f6ddf58 63 AliITSlayer();
64 AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
65 ~AliITSlayer();
00a7cc50 66 Int_t InsertCluster(AliITSRecPoint *c);
61ab8ea8 67 void ResetClusters();
c219fd63 68 Int_t SelectClusters(Float_t zmi, Float_t zma, Float_t ymi, Float_t yma);
00a7cc50 69 const AliITSRecPoint *GetNextCluster(Int_t &ci);
b87bd7cd 70 void ResetRoad();
71 Double_t GetRoad() const {return fRoad;}
7f6ddf58 72 Double_t GetR() const {return fR;}
00a7cc50 73 AliITSRecPoint *GetCluster(Int_t i) const { return fClusters[i]; }
7f6ddf58 74 AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
75 Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
61ab8ea8 76 Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const;
61ab8ea8 77 Int_t GetNladders() const {return fNladders;}
78 Int_t GetNdetectors() const {return fNdetectors;}
c219fd63 79 Int_t GetNumberOfClusters() const;
235b705f 80 protected:
7f6ddf58 81 Double_t fR; // mean radius of this layer
82 Double_t fPhiOffset; // offset of the first detector in Phi
83 Int_t fNladders; // number of ladders
84 Double_t fZOffset; // offset of the first detector in Z
85 Int_t fNdetectors; // detectors/ladder
86 AliITSdetector *fDetectors; // array of detectors
c219fd63 87
00a7cc50 88 AliITSRecPoint *fClusters[kMaxClusterPerLayer]; // pointers to clusters
c219fd63 89 Int_t fN[kNsector]; // numbers of clusters sector by sector
90
91 Int_t fIndex[kMaxClusterPerLayer]; // indexes of selected clusters
92 Int_t fNsel; // number of selected clusters
93
94 Double_t fRoad; // road defined by the cluster density
95 Int_t FindClusterIndex(Float_t z, Int_t s) const;
7f6ddf58 96 };
15dd636f 97
235b705f 98protected:
7f6ddf58 99 void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
a9a2d814 100 Double_t GetEffectiveThickness(Double_t y, Double_t z) const;
006b5f7f 101 void FollowProlongation();
102 Int_t TakeNextProlongation();
006b5f7f 103 void ResetBestTrack() {
104 fBestTrack.~AliITStrackV2();
105 new(&fBestTrack) AliITStrackV2(fTrackToFollow);
106 }
006b5f7f 107 void ResetTrackToFollow(const AliITStrackV2 &t) {
108 fTrackToFollow.~AliITStrackV2();
109 new(&fTrackToFollow) AliITStrackV2(t);
110 }
7f6ddf58 111 Int_t fI; // index of the current layer
18856a77 112 static AliITSlayer fgLayers[kMaxLayer];// ITS layers
7f6ddf58 113 AliITStrackV2 fTracks[kMaxLayer]; // track estimations at the ITS layers
114 AliITStrackV2 fBestTrack; // "best" track
115 AliITStrackV2 fTrackToFollow; // followed track
116 Int_t fPass; // current pass through the data
117 Int_t fConstraint[2]; // constraint flags
8676d691 118
c0dd5278 119 Int_t fLayersNotToSkip[kMaxLayer]; // layer masks
120 Int_t fLastLayerToTrackTo; // the innermost layer to track to
15dd636f 121
c630aafd 122 ClassDef(AliITStrackerV2,1) //ITS tracker V2
006b5f7f 123};
124
125
7f6ddf58 126inline void AliITStrackerV2::SetupFirstPass(Int_t *flags, Double_t *cuts) {
127 // This function sets up flags and cuts for the first tracking pass
128 //
129 // flags[0] - vertex constaint flag
130 // negative means "skip the pass"
131 // 0 means "no constraint"
132 // positive means "normal constraint"
133
134 fConstraint[0]=flags[0];
135 if (cuts==0) return;
136}
137
138inline void AliITStrackerV2::SetupSecondPass(Int_t *flags, Double_t *cuts) {
139 // This function sets up flags and cuts for the second tracking pass
140 //
141 // flags[0] - vertex constaint flag
142 // negative means "skip the pass"
143 // 0 means "no constraint"
144 // positive means "normal constraint"
145
146 fConstraint[1]=flags[0];
147 if (cuts==0) return;
148}
149
150inline void AliITStrackerV2::CookLabel(AliKalmanTrack *t,Float_t wrong) const {
151 //--------------------------------------------------------------------
152 //This function "cooks" a track label. If label<0, this track is fake.
153 //--------------------------------------------------------------------
154 Int_t tpcLabel=t->GetLabel();
155 if (tpcLabel<0) return;
156 AliTracker::CookLabel(t,wrong);
15dd636f 157 if (tpcLabel != t->GetLabel()) t->SetLabel(-tpcLabel);
7f6ddf58 158}
006b5f7f 159
160#endif