1 #ifndef ALIFLATESDVERTEX_H
2 #define ALIFLATESDVERTEX_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice *
6 * Primary Authors : Sergey Gorbunov, Jochen Thaeder, Chiara Zampolli */
9 * >> Flat structure representing a ESD vertex <<
13 #include "AliVVvertex.h"
14 #include "AliESDVertex.h"
15 #include "AliFlatESDMisc.h"
17 class AliFlatESDVertex: public AliVVvertex
18 //class AliFlatESDVertex
20 friend class AliFlatESDEvent;
22 Double32_t fPosition[3]; // vertex position
23 Double32_t fCov[6]; // vertex covariance matrix
24 Int_t fNContributors; // # of tracklets/tracks used for the estimate
25 Double32_t fChi2; // chi2 of vertex fit
27 Double32_t fSigma; // track dispersion around found vertex
28 Char_t fID; // ID of this vertex within an ESD event
29 Char_t fBCID; // BC ID assigned to vertex
32 virtual ~AliFlatESDVertex() {}
34 AliFlatESDVertex() :fNContributors(0), fChi2(0){
35 for( int i=0; i<3; i++) fPosition[i] = -9999;
36 for( int i=0; i<6; i++) fCov[i] = -9999;
39 void Set(const AliESDVertex &v );
41 Double32_t GetX() const { return fPosition[0]; }
42 Double32_t GetY() const { return fPosition[1]; }
43 Double32_t GetZ() const { return fPosition[2]; }
45 void GetXYZ(Double_t pos[3]) const { for(Int_t j=0; j<3; j++) pos[j]=fPosition[j]; }
46 void SetXYZ(Double_t pos[3]) { for(Int_t j=0; j<3; j++) fPosition[j]=pos[j]; }
48 void SetX(Double_t xVert) {fPosition[0]=xVert; }
49 void SetY(Double_t yVert) {fPosition[1]=yVert; }
50 void SetZ(Double_t zVert) {fPosition[2]=zVert; }
51 void SetNContributors(Int_t nContr) {fNContributors=nContr; }
54 Int_t GetNContributors() const { return fNContributors; }
57 void GetCovarianceMatrix(Double_t covmatrix[6]) const;
58 void SetCovarianceMatrix(const Double_t *) {}
60 Double_t GetChi2perNDF() const {return -999.;}
61 Double_t GetChi2() const {return -999.;}
62 void SetChi2(Double_t ) {}
63 Int_t GetNDF() const {return -999;}
65 void GetSigmaXYZ(Double_t sigma[3]) const;
66 void GetCovMatrix(Double_t covmatrix[6]) const;
67 void GetCovarianceMatrix(Double_t covmatrix[6]) const
68 {GetCovMatrix(covmatrix);}
69 void GetSNR(Double_t snr[3]) const;
70 void SetCovarianceMatrix(const Double_t *cov);
72 Double_t GetXRes() const {return TMath::Sqrt(fCovXX);}
73 Double_t GetYRes() const {return TMath::Sqrt(fCovYY);}
74 Double_t GetZRes() const {return TMath::Sqrt(fCovZZ);}
75 Double_t GetXSNR() const { return fSNR[0]; }
76 Double_t GetYSNR() const { return fSNR[1]; }
77 Double_t GetZSNR() const { return fSNR[2]; }
78 void SetSNR(double snr, int i) {if (i<3 && i>=0) fSNR[i] = snr;}
80 Double_t GetChi2() const { return fChi2; }
81 void SetChi2(Double_t chi) { fChi2 = chi; }
82 Double_t GetChi2toNDF() const
83 { return fChi2/(2.*(Double_t)fNContributors-3.); }
84 Double_t GetChi2perNDF() const { return GetChi2toNDF();}
85 Int_t GetNDF() const {return (2*fNContributors-3);}
87 void Print(Option_t* option = "") const;
88 void PrintStatus() const {Print();}
90 void Reset() { SetToZero(); SetName("Vertex"); }
92 void SetID(Char_t id) {fID=id;}
93 Char_t GetID() const {return fID;}
95 Double_t GetWDist(const AliESDVertex* v) const;
100 AliFlatESDVertex(AliFlatESDSpecialConstructorFlag f);