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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(){} | |
743a19f2 | 24 | AliITStrackerV2(const AliITSgeom *geom, Int_t event) throw (const Char_t *); |
006b5f7f | 25 | |
26 | AliCluster *GetCluster(Int_t index) const; | |
27 | Int_t Clusters2Tracks(const TFile *in, TFile *out); | |
14825d5a | 28 | Int_t PropagateBack(const TFile *in, TFile *out); |
006b5f7f | 29 | |
30 | private: | |
743a19f2 | 31 | Int_t fEventN; //event number |
006b5f7f | 32 | Double_t GetEffectiveThickness(Double_t phi, Double_t z) const; |
33 | ||
34 | void FollowProlongation(); | |
35 | Int_t TakeNextProlongation(); | |
36 | ||
37 | void ResetBestTrack() { | |
38 | fBestTrack.~AliITStrackV2(); | |
39 | new(&fBestTrack) AliITStrackV2(fTrackToFollow); | |
40 | } | |
41 | ||
42 | void ResetTrackToFollow(const AliITStrackV2 &t) { | |
43 | fTrackToFollow.~AliITStrackV2(); | |
44 | new(&fTrackToFollow) AliITStrackV2(t); | |
45 | } | |
46 | ||
7310dc5d | 47 | //The two subclasses are public in order to access one from the another |
48 | public: | |
006b5f7f | 49 | class AliITSdetector { |
50 | private: | |
51 | Double_t fR; // polar coordinates | |
52 | Double_t fPhi; // of this detector | |
53 | ||
54 | public: | |
55 | AliITSdetector(){} | |
56 | AliITSdetector(Double_t r,Double_t phi) {fR=r; fPhi=phi;} | |
57 | ||
58 | void *operator new(size_t s,AliITSdetector *p) {return p;} | |
59 | ||
60 | Double_t GetR() const {return fR;} | |
61 | Double_t GetPhi() const {return fPhi;} | |
62 | }; | |
63 | ||
64 | class AliITSlayer { | |
65 | Double_t fR; // mean radius of this layer | |
66 | Double_t fPhiOffset; // offset of the first detector in Phi | |
67 | Int_t fNladders; // number of ladders | |
68 | Double_t fZOffset; // offset of the first detector in Z | |
69 | Int_t fNdetectors; // detectors/ladder | |
70 | AliITSdetector *fDetectors; // array of detectors | |
71 | ||
72 | Int_t fN; // number of clusters | |
73 | AliITSclusterV2 *fClusters[kMaxClusterPerLayer]; // pointers to clusters | |
74 | ||
75 | Double_t fZmax; // edges | |
76 | Double_t fYmin; // of the | |
77 | Double_t fYmax; // "window" | |
78 | Int_t fI; // index of the current cluster within the "window" | |
79 | ||
80 | Int_t FindClusterIndex(Double_t z) const; | |
81 | ||
82 | public: | |
83 | AliITSlayer(); | |
84 | AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd); | |
85 | ~AliITSlayer(); | |
86 | Int_t InsertCluster(AliITSclusterV2 *c); | |
87 | void SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin,Double_t ymax); | |
88 | const AliITSclusterV2 *GetNextCluster(Int_t &ci); | |
89 | ||
90 | void *operator new(size_t s, AliITSlayer *p) {return p;} | |
91 | ||
92 | Double_t GetR() const {return fR;} | |
93 | AliITSclusterV2 *GetCluster(Int_t i) const {return fClusters[i];} | |
94 | AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; } | |
95 | Int_t FindDetectorIndex(Double_t phi, Double_t z) const; | |
96 | Double_t GetThickness(Double_t phi, Double_t z) const; | |
97 | ||
98 | Int_t InRoad() const ; | |
14825d5a | 99 | Int_t GetNumberOfClusters() const {return fN;} |
006b5f7f | 100 | }; |
101 | ||
7310dc5d | 102 | private: |
006b5f7f | 103 | Int_t fI; // index of the current layer |
104 | static AliITSlayer fLayers[kMaxLayer]; // ITS layers | |
105 | AliITStrackV2 fTracks[kMaxLayer]; // track estimations at the ITS layers | |
106 | AliITStrackV2 fBestTrack; // "best" track | |
107 | AliITStrackV2 fTrackToFollow; // followed track | |
108 | ||
109 | Double_t fYV; // Y-coordinate of the primary vertex | |
110 | Double_t fZV; // Z-coordinate of the primary vertex | |
111 | }; | |
112 | ||
113 | ||
114 | ||
115 | #endif |