]>
Commit | Line | Data |
---|---|---|
006b5f7f | 1 | #ifndef ALIITSTRACKER_H |
2 | #define ALIITSTRACKER_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 tracker | |
8 | // | |
9 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
10 | //------------------------------------------------------------------------- | |
11 | #include "AliTracker.h" | |
12 | #include "AliITSrecoV2.h" | |
13 | #include "AliITStrackV2.h" | |
14 | ||
15 | class AliITSclusterV2; | |
16 | class AliITSgeom; | |
17 | class TFile; | |
18 | ||
19 | ||
20 | //------------------------------------------------------------------------- | |
21 | class AliITStrackerV2 : public AliTracker { | |
22 | public: | |
23 | AliITStrackerV2():AliTracker(){} | |
61ab8ea8 | 24 | AliITStrackerV2(const AliITSgeom *geom); |
006b5f7f | 25 | AliCluster *GetCluster(Int_t index) const; |
8676d691 | 26 | Int_t LoadClusters(); |
61ab8ea8 | 27 | void UnloadClusters(); |
006b5f7f | 28 | Int_t Clusters2Tracks(const TFile *in, TFile *out); |
14825d5a | 29 | Int_t PropagateBack(const TFile *in, TFile *out); |
880f41b9 | 30 | Int_t RefitInward(const TFile *in, TFile *out); |
3a382e5c | 31 | Bool_t RefitAt(Double_t x, AliITStrackV2 *seed, const AliITStrackV2 *t); |
7f6ddf58 | 32 | void SetupFirstPass(Int_t *flags, Double_t *cuts=0); |
33 | void SetupSecondPass(Int_t *flags, Double_t *cuts=0); | |
34 | ||
c0dd5278 | 35 | void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;} |
36 | void SetLayersNotToSkip(Int_t *l); | |
37 | ||
b87bd7cd | 38 | void UseClusters(const AliKalmanTrack *t, Int_t from=0) const; |
39 | ||
7f6ddf58 | 40 | class AliITSdetector { |
41 | public: | |
42 | AliITSdetector(){} | |
43 | AliITSdetector(Double_t r,Double_t phi) {fR=r; fPhi=phi;} | |
44 | void *operator new(size_t s,AliITSdetector *p) {return p;} | |
45 | Double_t GetR() const {return fR;} | |
46 | Double_t GetPhi() const {return fPhi;} | |
47 | private: | |
48 | Double_t fR; // polar coordinates | |
49 | Double_t fPhi; // of this detector | |
50 | }; | |
51 | ||
52 | class AliITSlayer { | |
53 | public: | |
54 | AliITSlayer(); | |
55 | AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd); | |
56 | ~AliITSlayer(); | |
57 | Int_t InsertCluster(AliITSclusterV2 *c); | |
61ab8ea8 | 58 | void ResetClusters(); |
7f6ddf58 | 59 | void SelectClusters(Double_t zmi,Double_t zma,Double_t ymi,Double_t yma); |
60 | const AliITSclusterV2 *GetNextCluster(Int_t &ci); | |
61 | void *operator new(size_t s, AliITSlayer *p) {return p;} | |
b87bd7cd | 62 | void ResetRoad(); |
63 | Double_t GetRoad() const {return fRoad;} | |
7f6ddf58 | 64 | Double_t GetR() const {return fR;} |
65 | AliITSclusterV2 *GetCluster(Int_t i) const {return fClusters[i];} | |
66 | AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; } | |
67 | Int_t FindDetectorIndex(Double_t phi, Double_t z) const; | |
61ab8ea8 | 68 | Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const; |
7f6ddf58 | 69 | Int_t InRoad() const ; |
70 | Int_t GetNumberOfClusters() const {return fN;} | |
61ab8ea8 | 71 | Int_t GetNladders() const {return fNladders;} |
72 | Int_t GetNdetectors() const {return fNdetectors;} | |
7f6ddf58 | 73 | private: |
74 | Double_t fR; // mean radius of this layer | |
75 | Double_t fPhiOffset; // offset of the first detector in Phi | |
76 | Int_t fNladders; // number of ladders | |
77 | Double_t fZOffset; // offset of the first detector in Z | |
78 | Int_t fNdetectors; // detectors/ladder | |
79 | AliITSdetector *fDetectors; // array of detectors | |
80 | Int_t fN; // number of clusters | |
81 | AliITSclusterV2 *fClusters[kMaxClusterPerLayer]; // pointers to clusters | |
82 | Double_t fZmax; // edges | |
83 | Double_t fYmin; // of the | |
84 | Double_t fYmax; // "window" | |
85 | Int_t fI; // index of the current cluster within the "window" | |
b87bd7cd | 86 | Double_t fRoad; // road defined by the cluster density |
7f6ddf58 | 87 | Int_t FindClusterIndex(Double_t z) const; |
88 | }; | |
006b5f7f | 89 | |
90 | private: | |
7f6ddf58 | 91 | void CookLabel(AliKalmanTrack *t,Float_t wrong) const; |
a9a2d814 | 92 | Double_t GetEffectiveThickness(Double_t y, Double_t z) const; |
006b5f7f | 93 | void FollowProlongation(); |
94 | Int_t TakeNextProlongation(); | |
006b5f7f | 95 | void ResetBestTrack() { |
96 | fBestTrack.~AliITStrackV2(); | |
97 | new(&fBestTrack) AliITStrackV2(fTrackToFollow); | |
98 | } | |
006b5f7f | 99 | void ResetTrackToFollow(const AliITStrackV2 &t) { |
100 | fTrackToFollow.~AliITStrackV2(); | |
101 | new(&fTrackToFollow) AliITStrackV2(t); | |
102 | } | |
7f6ddf58 | 103 | Int_t fI; // index of the current layer |
006b5f7f | 104 | static AliITSlayer fLayers[kMaxLayer]; // ITS layers |
7f6ddf58 | 105 | AliITStrackV2 fTracks[kMaxLayer]; // track estimations at the ITS layers |
106 | AliITStrackV2 fBestTrack; // "best" track | |
107 | AliITStrackV2 fTrackToFollow; // followed track | |
108 | Int_t fPass; // current pass through the data | |
109 | Int_t fConstraint[2]; // constraint flags | |
8676d691 | 110 | |
c0dd5278 | 111 | Int_t fLayersNotToSkip[kMaxLayer]; // layer masks |
112 | Int_t fLastLayerToTrackTo; // the innermost layer to track to | |
113 | ||
8676d691 | 114 | ClassDef(AliITStrackerV2,1) //ITS tracker V2 |
006b5f7f | 115 | }; |
116 | ||
117 | ||
7f6ddf58 | 118 | inline void AliITStrackerV2::SetupFirstPass(Int_t *flags, Double_t *cuts) { |
119 | // This function sets up flags and cuts for the first tracking pass | |
120 | // | |
121 | // flags[0] - vertex constaint flag | |
122 | // negative means "skip the pass" | |
123 | // 0 means "no constraint" | |
124 | // positive means "normal constraint" | |
125 | ||
126 | fConstraint[0]=flags[0]; | |
127 | if (cuts==0) return; | |
128 | } | |
129 | ||
130 | inline void AliITStrackerV2::SetupSecondPass(Int_t *flags, Double_t *cuts) { | |
131 | // This function sets up flags and cuts for the second tracking pass | |
132 | // | |
133 | // flags[0] - vertex constaint flag | |
134 | // negative means "skip the pass" | |
135 | // 0 means "no constraint" | |
136 | // positive means "normal constraint" | |
137 | ||
138 | fConstraint[1]=flags[0]; | |
139 | if (cuts==0) return; | |
140 | } | |
141 | ||
142 | inline void AliITStrackerV2::CookLabel(AliKalmanTrack *t,Float_t wrong) const { | |
143 | //-------------------------------------------------------------------- | |
144 | //This function "cooks" a track label. If label<0, this track is fake. | |
145 | //-------------------------------------------------------------------- | |
146 | Int_t tpcLabel=t->GetLabel(); | |
147 | if (tpcLabel<0) return; | |
148 | AliTracker::CookLabel(t,wrong); | |
149 | if (tpcLabel != t->GetLabel()) t->SetLabel(-tpcLabel); | |
150 | } | |
006b5f7f | 151 | |
152 | #endif |