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13918578 | 1 | #ifndef ALIITSTRACKERSA_H |
2 | #define ALIITSTRACKERSA_H | |
3 | ||
4 | ||
5 | ||
e43c066c | 6 | #include "AliITStrackerMI.h" |
13918578 | 7 | |
8 | /* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * | |
9 | * See cxx source for full Copyright notice */ | |
10 | ||
11 | //////////////////////////////////////////////////// | |
12 | // Stand alone tracker class // | |
13 | // Origin: Elisabetta Crescio // | |
14 | // e-mail: crescio@to.infn.it // | |
15 | //////////////////////////////////////////////////// | |
16 | ||
17 | class AliITSclusterTable; | |
18 | class AliITStrackSA; | |
d681bb2d | 19 | class AliESDVertex; |
13918578 | 20 | class AliITSVertexer; |
2257f27e | 21 | class TTree; |
13918578 | 22 | |
e43c066c | 23 | class AliITStrackerSA : public AliITStrackerMI { |
13918578 | 24 | |
25 | ||
26 | public: | |
27 | ||
28 | AliITStrackerSA(); | |
2257f27e | 29 | AliITStrackerSA(AliITSgeom *geom); |
d681bb2d | 30 | AliITStrackerSA(AliITSgeom *geom,AliESDVertex *vert); |
13918578 | 31 | AliITStrackerSA(AliITSgeom *geom,AliITSVertexer *vertexer); |
7d62fb64 | 32 | AliITStrackerSA(const AliITStrackerSA& tracker); |
33 | AliITStrackerSA& operator=(const AliITStrackerSA& /* trkr */); | |
13918578 | 34 | virtual ~AliITStrackerSA(); |
e43c066c | 35 | virtual Int_t Clusters2Tracks(AliESD *event){Int_t rc = AliITStrackerMI::Clusters2Tracks(event); if(!rc) rc=FindTracks(event); return rc;} |
2257f27e | 36 | Int_t FindTracks(AliESD* event); |
37 | void FindTracks(TTree *out,Int_t evnumber=0); | |
13918578 | 38 | AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex, |
2257f27e | 39 | Double_t *errorprimvert); |
13918578 | 40 | |
41 | AliITStrackV2* FindTrackLowChiSquare(TObjArray* tracklist, Int_t dim) const; | |
e43c066c | 42 | Int_t LoadClusters(TTree *cf) {Int_t rc=AliITStrackerMI::LoadClusters(cf); SetClusterTree(cf);SetSixPoints(kTRUE); return rc;} |
d681bb2d | 43 | void SetVertex(AliESDVertex *vtx){fVert = vtx;} |
2257f27e | 44 | void SetClusterTree(TTree * itscl){fITSclusters = itscl;} |
45 | void SetSixPoints(Bool_t sp = kTRUE){fSixPoints = sp;} | |
46 | Bool_t GetSixPoints() const {return fSixPoints;} | |
13918578 | 47 | void SetWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0); |
4e05ab9a | 48 | void UseFoundTracksV2(Int_t evnum,TTree* treev2); |
49 | void UseFoundTracksV2(AliESD *event); | |
13918578 | 50 | |
627b6db6 | 51 | enum {kSAflag=0x8000}; //flag to mark clusters used in the SA tracker |
52 | ||
13918578 | 53 | protected: |
54 | ||
13918578 | 55 | //Initialization |
56 | void Init(); | |
4e05ab9a | 57 | void ResetForFinding(); |
58 | void UpdatePoints(); | |
13918578 | 59 | |
60 | static Double_t Curvature(Double_t x1,Double_t y1,Double_t x2,Double_t y2, | |
bef31448 | 61 | Double_t x3,Double_t y3); |
13918578 | 62 | |
63 | Double_t ChoosePoint(Double_t p1, Double_t p2, Double_t pp); | |
64 | ||
65 | static Int_t FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2, | |
66 | Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2); | |
67 | static Int_t FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2, | |
68 | Float_t x3, Float_t y3,Float_t& a, Float_t& b, | |
69 | Float_t& c); | |
70 | ||
71 | static Int_t FindLabel(Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5, Int_t l6); | |
72 | static Int_t Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5, | |
73 | Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11, | |
74 | Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, | |
75 | Int_t gl17, Int_t gl18, Int_t numberofpoints=6); | |
bef31448 | 76 | |
13918578 | 77 | Int_t SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, |
cfe729e0 | 78 | AliITStrackSA* trs,Double_t zvertex,Int_t flagp); |
13918578 | 79 | |
13918578 | 80 | Double_t fPhiEstimate; //Estimation of phi angle on next layer |
4e05ab9a | 81 | Float_t fPoint1[2]; //! coord. of 1-st point to evaluate the curvature |
82 | Float_t fPoint2[2]; //! coord. of 2-nd point to evaluate the curvature | |
83 | Float_t fPoint3[2]; //! coord. of 3-rd point to evaluate the curvature | |
84 | Float_t fPointc[2]; //! current point coord (for curvature eval.) | |
13918578 | 85 | Double_t fLambdac; //! current value of the Lambda angle in the window |
86 | Double_t fPhic; //! current value of the Phi angle in the window | |
87 | Float_t fCoef1; //! param. of the equation of the circ. approx a layer | |
88 | Float_t fCoef2; //! param. of the equation of the circ. approx a layer | |
89 | Float_t fCoef3; //! param. of the equation of the circ. approx a layer | |
90 | Int_t fNloop; // Number of iterqations on phi and lambda windows | |
91 | Double_t *fPhiWin; // phi window sizes | |
92 | Double_t *fLambdaWin; // lambda window sizes | |
d681bb2d | 93 | AliESDVertex *fVert; //! primary vertex |
13918578 | 94 | AliITSVertexer *fVertexer; //! vertexer |
95 | AliITSgeom *fGeom; //! ITS geometry | |
4e05ab9a | 96 | TObjArray *fListOfTracks; //! container for found tracks |
2257f27e | 97 | TTree *fITSclusters; //! pointer to ITS tree of clusters |
2257f27e | 98 | Bool_t fSixPoints; // If true 6/6 points are required (default). 5/6 otherwise |
13918578 | 99 | AliITSclusterTable* fTable; // table with clusters |
100 | ClassDef(AliITStrackerSA,1) | |
101 | }; | |
102 | ||
103 | #endif | |
104 |