3 /* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------------------------
9 // AOD vertex base class
10 // Author: Markus Oldenburg, CERN
11 // Inheritance from AliVVertex: A. Dainese
12 //-------------------------------------------------------------------------
15 #include <TRefArray.h>
18 #include "AliVVertex.h"
19 #include "AliAODRedCov.h"
22 class AliAODVertex : public AliVVertex {
26 enum AODVtx_t {kUndef=-1, kPrimary, kKink, kV0, kCascade, kMulti, kMainSPD, kPileupSPD, kPileupTracks,kMainTPC};
29 AliAODVertex(const Double_t *position,
30 const Double_t *covMatrix=0x0,
31 Double_t chi2perNDF = -999.,
32 TObject *parent = 0x0,
36 AliAODVertex(const Float_t *position,
37 const Float_t *covMatrix=0x0,
38 Double_t chi2perNDF = -999.,
39 TObject *parent = 0x0,
43 AliAODVertex(const Double_t *position,
47 AliAODVertex(const Float_t *position,
52 virtual ~AliAODVertex();
53 AliAODVertex(const AliAODVertex& vtx);
54 AliAODVertex& operator=(const AliAODVertex& vtx);
56 virtual AliAODVertex* CloneWithoutRefs() const;
58 void SetX(Double_t x) { fPosition[0] = x; }
59 void SetY(Double_t y) { fPosition[1] = y; }
60 void SetZ(Double_t z) { fPosition[2] = z; }
61 void SetPosition(Double_t x, Double_t y, Double_t z) { fPosition[0] = x; fPosition[1] = y; fPosition[2] = z; }
62 template <class T> void SetPosition(T *pos)
63 { fPosition[0] = pos[0]; fPosition[1] = pos[1]; fPosition[2] = pos[2]; }
65 void SetChi2perNDF(Double_t chi2perNDF) { fChi2perNDF = chi2perNDF; }
67 void SetParent(TObject *parent) { fParent = parent; }
69 Double_t GetX() const { return fPosition[0]; }
70 Double_t GetY() const { return fPosition[1]; }
71 Double_t GetZ() const { return fPosition[2]; }
72 void GetXYZ(Double_t position[3]) const
73 {position[0]=fPosition[0]; position[1]=fPosition[1]; position[2]=fPosition[2];}
74 template <class T> void GetPosition(T *pos) const
75 {pos[0]=fPosition[0]; pos[1]=fPosition[1]; pos[2]=fPosition[2];}
77 template <class T> void SetCovMatrix(const T *covMatrix) {
78 if(!fCovMatrix) fCovMatrix=new AliAODRedCov<3>();
79 fCovMatrix->SetCovMatrix(covMatrix);}
81 template <class T> Bool_t GetCovMatrix(T *covMatrix) const {
82 if(!fCovMatrix) return kFALSE;
83 fCovMatrix->GetCovMatrix(covMatrix); return kTRUE;}
85 void GetCovarianceMatrix(Double_t covmatrix[6]) const
86 {GetCovMatrix(covmatrix);}
87 void RemoveCovMatrix() {delete fCovMatrix; fCovMatrix=NULL;}
89 template <class T> void GetSigmaXYZ(T *sigma) const;
91 Double_t GetChi2perNDF() const { return fChi2perNDF; }
92 Double_t GetChi2() const { return fChi2perNDF*(Double_t)GetNDF(); }
93 Int_t GetNDF() const { return 2*GetNContributors()-3; }
95 Short_t GetID() const { return fID; }
96 void SetID(Short_t id) { fID=id; }
98 Char_t GetType() const { return fType; }
99 void SetType(AODVtx_t vtype) { fType=vtype; }
101 TObject* GetParent() const { return fParent.GetObject(); }
102 Bool_t HasParent(TObject *parent) const { return (fParent.GetObject() == parent) ? kTRUE : kFALSE; }
104 void AddDaughter(TObject *daughter);
105 void RemoveDaughter(TObject *daughter) { fDaughters.Remove(daughter); }
106 void RemoveDaughters() { fDaughters.Clear(); if(fProngs) {delete [] fProngs; fProngs=0; MakeProngs(); fIprong=0;} }
107 TObject* GetDaughter(Int_t i);
108 Bool_t HasDaughter(TObject *daughter) const;
109 Int_t GetNDaughters() const;
110 Int_t GetNContributors() const;
111 void SetNContributors(Int_t nc) {fNContributors = nc;}
112 // covariance matrix elements after rotation by phi around z-axis
113 // and, then, by theta around new y-axis
114 Double_t RotatedCovMatrixXX(Double_t phi = 0., Double_t theta = 0.) const;
115 Double_t RotatedCovMatrixXY(Double_t phi = 0., Double_t theta = 0.) const;
116 Double_t RotatedCovMatrixYY(Double_t phi = 0.) const;
117 Double_t RotatedCovMatrixXZ(Double_t phi = 0., Double_t theta = 0.) const;
118 Double_t RotatedCovMatrixYZ(Double_t phi = 0., Double_t theta = 0.) const;
119 Double_t RotatedCovMatrixZZ(Double_t phi = 0., Double_t theta = 0.) const;
121 template <class T, class P> void PhiAndThetaToVertex(AliAODVertex *vtx, P &phi, T &theta) const;
122 Double_t Distance2ToVertex(const AliAODVertex *vtx) const;
123 Double_t DistanceToVertex(AliAODVertex *vtx) const
124 {return TMath::Sqrt(Distance2ToVertex(vtx));}
125 Double_t DistanceXY2ToVertex(const AliAODVertex *vtx) const;
126 Double_t DistanceXYToVertex(AliAODVertex *vtx) const
127 {return TMath::Sqrt(DistanceXY2ToVertex(vtx));}
128 Double_t Error2DistanceToVertex(AliAODVertex *vtx) const;
129 Double_t ErrorDistanceToVertex(AliAODVertex *vtx) const
130 {return TMath::Sqrt(Error2DistanceToVertex(vtx));}
131 Double_t Error2DistanceXYToVertex(AliAODVertex *vtx) const;
132 Double_t ErrorDistanceXYToVertex(AliAODVertex *vtx) const
133 {return TMath::Sqrt(Error2DistanceXYToVertex(vtx));}
135 void PrintIndices() const;
136 void Print(Option_t* option = "") const;
138 const char* AsString() const;
140 static const char* GetTypeName(AODVtx_t type);
143 void MakeProngs() {if (fNprong > 0) {fProngs = new TRef[fNprong]; fIprong=0;}}
147 Double32_t fPosition[3]; // vertex position
148 Double32_t fChi2perNDF; // chi2/NDF of vertex fit
149 Short_t fID; // vertex ID; corresponds to the array index of the appropriate ESD container
150 Char_t fType; // vertex type
151 Int_t fNprong; // number of prongs
152 Int_t fIprong; //!index of prong
153 Int_t fNContributors; // Number of contributors for SPD vertex
154 AliAODRedCov<3> *fCovMatrix; // vertex covariance matrix; values of and below the diagonal
155 TRef fParent; // reference to the parent particle
156 TRefArray fDaughters; // references to the daughter particles
157 TRef *fProngs; //[fNprong] alternative daughters for n-prong vertex
159 ClassDef(AliAODVertex, 7);
162 inline Int_t AliAODVertex::GetNDaughters() const
165 return fDaughters.GetEntriesFast();
171 inline TObject* AliAODVertex::GetDaughter(Int_t i)
174 return fDaughters.At(i);
177 return fProngs[i].GetObject();
179 AliWarning("Daughter index out of range !\n");