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13918578 | 1 | #ifndef ALIITSTRACKERSA_H |
2 | #define ALIITSTRACKERSA_H | |
3 | ||
4 | ||
5 | ||
36e140f1 | 6 | #include "AliITSgeomTGeo.h" |
e43c066c | 7 | #include "AliITStrackerMI.h" |
13918578 | 8 | |
9 | /* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * | |
10 | * See cxx source for full Copyright notice */ | |
11 | ||
deae0246 | 12 | /* $Id$ */ |
13 | ||
14 | ||
13918578 | 15 | //////////////////////////////////////////////////// |
16 | // Stand alone tracker class // | |
17 | // Origin: Elisabetta Crescio // | |
18 | // e-mail: crescio@to.infn.it // | |
36e140f1 | 19 | // adapted for cosmics by A.Dainese // |
13918578 | 20 | //////////////////////////////////////////////////// |
21 | ||
22 | class AliITSclusterTable; | |
23 | class AliITStrackSA; | |
d681bb2d | 24 | class AliESDVertex; |
b8ed1a92 | 25 | class AliESDEvent; |
13918578 | 26 | class AliITSVertexer; |
2257f27e | 27 | class TTree; |
7e5bf5af | 28 | class TArrayD; |
13918578 | 29 | |
e43c066c | 30 | class AliITStrackerSA : public AliITStrackerMI { |
13918578 | 31 | |
32 | ||
33 | public: | |
34 | ||
35 | AliITStrackerSA(); | |
cc088660 | 36 | AliITStrackerSA(const Char_t *geom); |
37 | AliITStrackerSA(const Char_t *geom,AliESDVertex *vert); | |
38 | AliITStrackerSA(const Char_t *geom,AliITSVertexer *vertexer); | |
7d62fb64 | 39 | AliITStrackerSA(const AliITStrackerSA& tracker); |
e399f961 | 40 | AliITStrackerSA& operator=(const AliITStrackerSA& source); |
13918578 | 41 | virtual ~AliITStrackerSA(); |
af885e0f | 42 | virtual Int_t Clusters2Tracks(AliESDEvent *event); |
43 | Int_t FindTracks(AliESDEvent* event); | |
13918578 | 44 | |
5a03f353 | 45 | AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex,Bool_t onePoint=kFALSE); |
c421499f | 46 | void StoreTrack(AliITStrackV2 *t,AliESDEvent *event) const; |
deae0246 | 47 | Int_t FindTrackLowChiSquare() const; |
12b1afb7 | 48 | Int_t LoadClusters(TTree *cf) {Int_t rc=AliITStrackerMI::LoadClusters(cf); SetClusterTree(cf); return rc;} |
d681bb2d | 49 | void SetVertex(AliESDVertex *vtx){fVert = vtx;} |
2257f27e | 50 | void SetClusterTree(TTree * itscl){fITSclusters = itscl;} |
12b1afb7 | 51 | |
52 | void SetOutwardFinding() {fInwardFlag=kFALSE;} | |
53 | void SetInwardFinding() {fInwardFlag=kTRUE;} | |
54 | void SetOuterStartLayer(Int_t osl = 0) { | |
55 | if(osl>(AliITSgeomTGeo::GetNLayers()-2)) AliWarning("Minimum Number of layers is 2. OuterStartLayer set to Nlayers-2"); | |
56 | fOuterStartLayer = TMath::Min(AliITSgeomTGeo::GetNLayers()-2,osl); | |
57 | } | |
b8ed1a92 | 58 | Int_t GetOuterStartLayer() const {return fOuterStartLayer;} |
12b1afb7 | 59 | void SetInnerStartLayer(Int_t isl = 5) { |
60 | if(isl<1) AliWarning("Minimum Number of layers is 2. InnerStartLayer set to 1"); | |
61 | fInnerStartLayer = TMath::Max(1,isl); | |
62 | } | |
63 | Int_t GetInnerStartLayer() const {return fInnerStartLayer;} | |
64 | ||
1966f03c | 65 | void SetSAFlag(Bool_t fl){fITSStandAlone=fl;} // StandAlone flag setter |
66 | Bool_t GetSAFlag() const {return fITSStandAlone;} // StandAlone flag getter | |
c7d6d7b7 | 67 | void SetFixedWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0); |
68 | void SetCalculatedWindowSizes(Int_t n=10, Float_t phimin=0.002, Float_t phimax=0.0145, Float_t lambdamin=0.003, Float_t lambdamax=0.008); | |
13918578 | 69 | |
12b1afb7 | 70 | void SetMinNPoints(Int_t np){fMinNPoints=np;} |
71 | Int_t GetMinNPoints() const {return fMinNPoints;} | |
3733ccd2 | 72 | void SetMinimumChargeSDDSSD(Float_t minq=0.){fMinQ=minq;} |
627b6db6 | 73 | enum {kSAflag=0x8000}; //flag to mark clusters used in the SA tracker |
13918578 | 74 | protected: |
75 | ||
13918578 | 76 | //Initialization |
77 | void Init(); | |
4e05ab9a | 78 | void ResetForFinding(); |
79 | void UpdatePoints(); | |
12b1afb7 | 80 | Bool_t SetFirstPoint(Int_t lay, Int_t clu, Double_t* primaryVertex); |
13918578 | 81 | static Double_t Curvature(Double_t x1,Double_t y1,Double_t x2,Double_t y2, |
bef31448 | 82 | Double_t x3,Double_t y3); |
13918578 | 83 | |
84 | Double_t ChoosePoint(Double_t p1, Double_t p2, Double_t pp); | |
85 | ||
86 | static Int_t FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2, | |
87 | Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2); | |
88 | static Int_t FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2, | |
89 | Float_t x3, Float_t y3,Float_t& a, Float_t& b, | |
90 | Float_t& c); | |
91 | ||
92 | static Int_t FindLabel(Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5, Int_t l6); | |
93 | static Int_t Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5, | |
94 | Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11, | |
95 | Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, | |
96 | Int_t gl17, Int_t gl18, Int_t numberofpoints=6); | |
bef31448 | 97 | |
13918578 | 98 | Int_t SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, |
cfe729e0 | 99 | AliITStrackSA* trs,Double_t zvertex,Int_t flagp); |
7e5bf5af | 100 | |
cc088660 | 101 | void GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda,Float_t &x,Float_t &y,Float_t &z,Double_t* vertex); |
102 | void GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz); | |
7e5bf5af | 103 | |
104 | AliITSclusterTable* GetClusterCoord(Int_t layer,Int_t n) const {return (AliITSclusterTable*)fCluCoord[layer]->UncheckedAt(n);} | |
105 | void RemoveClusterCoord(Int_t layer, Int_t n) {fCluCoord[layer]->RemoveAt(n);fCluCoord[layer]->Compress();} | |
106 | ||
107 | ||
13918578 | 108 | Double_t fPhiEstimate; //Estimation of phi angle on next layer |
1966f03c | 109 | Bool_t fITSStandAlone; //Tracking is performed in the ITS alone if kTRUE |
4e05ab9a | 110 | Float_t fPoint1[2]; //! coord. of 1-st point to evaluate the curvature |
111 | Float_t fPoint2[2]; //! coord. of 2-nd point to evaluate the curvature | |
112 | Float_t fPoint3[2]; //! coord. of 3-rd point to evaluate the curvature | |
113 | Float_t fPointc[2]; //! current point coord (for curvature eval.) | |
13918578 | 114 | Double_t fLambdac; //! current value of the Lambda angle in the window |
115 | Double_t fPhic; //! current value of the Phi angle in the window | |
116 | Float_t fCoef1; //! param. of the equation of the circ. approx a layer | |
117 | Float_t fCoef2; //! param. of the equation of the circ. approx a layer | |
118 | Float_t fCoef3; //! param. of the equation of the circ. approx a layer | |
119 | Int_t fNloop; // Number of iterqations on phi and lambda windows | |
120 | Double_t *fPhiWin; // phi window sizes | |
121 | Double_t *fLambdaWin; // lambda window sizes | |
d681bb2d | 122 | AliESDVertex *fVert; //! primary vertex |
13918578 | 123 | AliITSVertexer *fVertexer; //! vertexer |
4e05ab9a | 124 | TObjArray *fListOfTracks; //! container for found tracks |
deae0246 | 125 | TObjArray *fListOfSATracks; //! container for found SA tracks |
2257f27e | 126 | TTree *fITSclusters; //! pointer to ITS tree of clusters |
12b1afb7 | 127 | Bool_t fInwardFlag; // set to kTRUE for inward track finding |
128 | Int_t fOuterStartLayer; // Outward search for tracks with <6 points: outer layer to start from | |
129 | Int_t fInnerStartLayer; // Inward search for tracks with <6 points: inner layer to start from | |
130 | Int_t fMinNPoints; // minimum number of clusters for a track | |
3733ccd2 | 131 | Float_t fMinQ; // lower cut on cluster charge (SDD and SSD) |
7e5bf5af | 132 | |
133 | TClonesArray** fCluLayer; //! array with clusters | |
134 | TClonesArray** fCluCoord; //! array with cluster info | |
135 | ||
12b1afb7 | 136 | ClassDef(AliITStrackerSA,9) |
13918578 | 137 | }; |
138 | ||
139 | #endif |