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1 | // $Id$ |
2 | |
3 | //___________________________________________________________________________ |
4 | ///////////////////////////////////////////////////////////////////////////// |
5 | // // |
6 | // File reader for HLT tracks ESD // |
7 | // // |
8 | // loizides@ikf.uni-frankfurt.de // |
9 | ///////////////////////////////////////////////////////////////////////////// |
10 | |
11 | #include <Riostream.h> |
12 | #include <TMath.h> |
13 | #include <TString.h> |
14 | #include <TObjString.h> |
15 | #include <TTree.h> |
16 | #include <TFile.h> |
17 | #include <AliESD.h> |
18 | #include <AliESDtrack.h> |
19 | #include <AliESDHLTtrack.h> |
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20 | #include <AliKalmanTrack.h> |
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21 | #include <AliJetEventParticles.h> |
22 | #include "AliJetParticlesReaderHLT.h" |
23 | |
24 | ClassImp(AliJetParticlesReaderHLT) |
25 | |
26 | AliJetParticlesReaderHLT::AliJetParticlesReaderHLT(Bool_t bMapper, const Char_t* esdfilename) : |
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27 | AliJetParticlesReaderESD(0,esdfilename), |
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28 | fTrackerType(bMapper), |
29 | fMinHits(0), |
30 | fMinWeight(0) |
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31 | { |
32 | //constructor |
33 | } |
34 | |
35 | /********************************************************************/ |
36 | |
37 | AliJetParticlesReaderHLT::AliJetParticlesReaderHLT( |
38 | Bool_t bMapper, |
39 | TObjArray* dirs, |
40 | const Char_t* esdfilename) : |
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41 | AliJetParticlesReaderESD(0,dirs,esdfilename), |
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42 | fTrackerType(bMapper), |
43 | fMinHits(0), |
44 | fMinWeight(0) |
45 | |
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46 | { |
47 | //constructor |
48 | } |
49 | |
50 | /********************************************************************/ |
51 | |
52 | AliJetParticlesReaderHLT::~AliJetParticlesReaderHLT() |
53 | { |
54 | //desctructor |
55 | } |
56 | |
57 | Int_t AliJetParticlesReaderHLT::ReadESD(AliESD* esd) |
58 | { |
59 | //Reads one ESD |
60 | |
61 | if (esd == 0) |
62 | { |
63 | Error("ReadESD","ESD is NULL"); |
64 | return kFALSE; |
65 | } |
66 | |
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67 | Float_t mf = esd->GetMagneticField(); |
68 | if (mf <= 0.0) |
69 | { |
70 | Error("ReadESD","Magnetic Field is 0. Skipping to next event."); |
71 | return kFALSE; |
72 | } |
73 | AliKalmanTrack::SetMagneticField(mf/10.); |
74 | |
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75 | Info("ReadESD","Reading Event %d",fCurrentDir*1000+fCurrentEvent); |
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76 | if((!fOwner) || (fEventParticles==0)) |
77 | fEventParticles = new AliJetEventParticles(); |
78 | |
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79 | Int_t ntr=0; |
80 | if(fTrackerType){ |
81 | ntr =esd->GetNumberOfHLTHoughTracks(); |
82 | Info("ReadESD","Found %d conformal tracks.",ntr); |
83 | } else { |
84 | ntr=esd->GetNumberOfHLTHoughTracks(); |
85 | Info("ReadESD","Found %d hough tracks.",ntr); |
86 | } |
87 | fEventParticles->Reset(ntr); |
88 | |
89 | TString headdesc=""; |
90 | headdesc+="Run "; |
91 | headdesc+=esd->GetRunNumber(); |
92 | headdesc+=": Ev "; |
93 | headdesc+=esd->GetEventNumber(); |
94 | fEventParticles->SetHeader(headdesc); |
95 | |
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96 | Double_t vertexpos[3];//vertex position |
97 | const AliESDVertex* kvertex = esd->GetVertex(); |
98 | if (kvertex == 0) |
99 | { |
100 | Info("ReadESD","ESD returned NULL pointer to vertex - assuming (0.0,0.0,0.0)"); |
101 | vertexpos[0] = 0.0; |
102 | vertexpos[1] = 0.0; |
103 | vertexpos[2] = 0.0; |
104 | } |
105 | else |
106 | { |
107 | kvertex->GetXYZ(vertexpos); |
108 | } |
109 | |
110 | fEventParticles->SetVertex(vertexpos[0],vertexpos[1],vertexpos[2]); |
111 | |
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112 | for (Int_t i = 0;i<ntr; i++) { |
113 | AliESDHLTtrack *kesdtrack; |
114 | if(fTrackerType){ |
115 | kesdtrack=esd->GetHLTConfMapTrack(i); |
116 | } else { |
117 | kesdtrack=esd->GetHLTHoughTrack(i); |
118 | } |
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119 | |
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120 | if (kesdtrack == 0) |
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121 | { |
122 | Error("ReadESD","Can not get track %d", i); |
123 | continue; |
124 | } |
125 | |
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126 | //const Float_t kpid=kesdtrack->GetPID(); |
127 | const Int_t knhits=kesdtrack->GetNHits(); |
128 | const Int_t kweight=kesdtrack->GetWeight(); |
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129 | //cout << i << " " << kweight << " " << knhits << endl; |
130 | if((fMinHits>0) && (knhits<fMinHits)) continue; |
131 | if(kweight>1000) continue; //avoid ghosts |
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132 | if((fMinWeight>0) && (kweight<fMinWeight)) continue; |
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133 | |
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134 | const Float_t kpx=kesdtrack->GetPx(); |
135 | const Float_t kpy=kesdtrack->GetPy(); |
136 | const Float_t kpz=kesdtrack->GetPz(); |
137 | const Float_t kpt=kesdtrack->GetPt(); |
138 | const Float_t kp=TMath::Sqrt(kpz*kpz+kpt*kpt); |
139 | const Float_t keta=0.5*TMath::Log((kp+kpz+1e-30)/(kp-kpz+1e-30)); |
140 | const Float_t kphi=TMath::Pi()+TMath::ATan2(-kpy,-kpx); |
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141 | |
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142 | if(IsAcceptedParticle(kpt,kphi,keta)) |
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143 | fEventParticles->AddParticle(kpx,kpy,kpz,kp,i,kesdtrack->GetMCid(),knhits,kpt,kphi,keta); |
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144 | } //loop over tracks |
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145 | |
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146 | return kTRUE; |
147 | } |