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586f2bc3 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | //------------------------------------------------------------------------- | |
17 | // Jet AOD Reader | |
18 | // AOD reader for jet analysis | |
19 | // Author: Davide Perrino <davide.perrino@cern.ch> | |
20 | //------------------------------------------------------------------------- | |
21 | ||
22 | ||
23 | #include <Riostream.h> | |
24 | #include <TSystem.h> | |
25 | #include <TLorentzVector.h> | |
26 | #include <TVector3.h> | |
ee7de0dd | 27 | #include <TChain.h> |
28 | ||
586f2bc3 | 29 | #include "AliJetAODReader.h" |
30 | #include "AliJetAODReaderHeader.h" | |
31 | #include "AliAODEvent.h" | |
32 | #include "AliAODTrack.h" | |
33 | ||
34 | ClassImp(AliJetAODReader) | |
35 | ||
36 | AliJetAODReader::AliJetAODReader(): | |
37 | AliJetReader(), | |
38 | fChain(0x0), | |
39 | fAOD(0x0), | |
40 | fRef(new TRefArray), | |
41 | fDebug(0), | |
42 | fOpt(0) | |
43 | { | |
44 | // Constructor | |
45 | } | |
46 | ||
47 | //____________________________________________________________________________ | |
48 | ||
49 | AliJetAODReader::~AliJetAODReader() | |
50 | { | |
51 | // Destructor | |
52 | delete fChain; | |
53 | delete fAOD; | |
54 | delete fRef; | |
55 | } | |
56 | ||
57 | //____________________________________________________________________________ | |
58 | ||
59 | void AliJetAODReader::OpenInputFiles() | |
60 | { | |
61 | // Open the necessary input files | |
62 | // chain for the AODs | |
63 | fChain = new TChain("aodTree"); | |
64 | ||
65 | // get directory and pattern name from the header | |
66 | const char* dirName=fReaderHeader->GetDirectory(); | |
67 | const char* pattern=fReaderHeader->GetPattern(); | |
68 | ||
69 | // // Add files matching patters to the chain | |
70 | ||
71 | void *dir = gSystem->OpenDirectory(dirName); | |
72 | const char *name = 0x0; | |
73 | int naod = ((AliJetAODReaderHeader*) fReaderHeader)->GetNaod(); | |
74 | int a = 0; | |
75 | while ((name = gSystem->GetDirEntry(dir))){ | |
76 | if (a>=naod) continue; | |
77 | ||
78 | if (strstr(name,pattern)){ | |
79 | char path[256]; | |
80 | sprintf(path,"%s/%s/aod.root",dirName,name); | |
81 | fChain->AddFile(path); | |
82 | a++; | |
83 | } | |
84 | } | |
85 | ||
86 | gSystem->FreeDirectory(dir); | |
87 | ||
88 | ||
89 | fAOD = 0; | |
90 | fChain->SetBranchAddress("AOD",&fAOD); | |
91 | ||
92 | int nMax = fChain->GetEntries(); | |
93 | ||
94 | printf("\n AliJetAODReader: Total number of events in chain= %d \n",nMax); | |
95 | ||
96 | // set number of events in header | |
97 | if (fReaderHeader->GetLastEvent() == -1) | |
98 | fReaderHeader->SetLastEvent(nMax); | |
99 | else { | |
100 | Int_t nUsr = fReaderHeader->GetLastEvent(); | |
101 | fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr)); | |
102 | } | |
103 | } | |
104 | ||
105 | //____________________________________________________________________________ | |
106 | ||
107 | void AliJetAODReader::ConnectTree(TTree* tree, TObject* /*data*/) { | |
108 | // Connect the tree | |
109 | // For AOD reader it's needed only to set the number of events | |
110 | fChain = (TChain*) tree; | |
111 | ||
112 | Int_t nMax = fChain->GetEntries(); | |
113 | printf("\n AliJetAODReader: Total number of events in chain= %5d \n", nMax); | |
114 | // set number of events in header | |
115 | if (fReaderHeader->GetLastEvent() == -1) | |
116 | fReaderHeader->SetLastEvent(nMax); | |
117 | else { | |
118 | Int_t nUsr = fReaderHeader->GetLastEvent(); | |
119 | fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr)); | |
120 | } | |
121 | } | |
122 | ||
123 | //____________________________________________________________________________ | |
124 | ||
125 | Bool_t AliJetAODReader::FillMomentumArray(Int_t /*event*/) | |
126 | { | |
127 | // Clear momentum array | |
128 | ClearArray(); | |
129 | fDebug = fReaderHeader->GetDebug(); | |
130 | ||
131 | if (!fAOD) { | |
132 | return kFALSE; | |
133 | } | |
134 | ||
135 | // get number of tracks in event (for the loop) | |
136 | Int_t nt = fAOD->GetNTracks(); | |
d61f057d | 137 | printf("AOD tracks: %5d ", nt); |
586f2bc3 | 138 | |
139 | // temporary storage of signal and pt cut flag | |
140 | Int_t* sflag = new Int_t[nt]; | |
141 | Int_t* cflag = new Int_t[nt]; | |
142 | ||
143 | // get cuts set by user | |
144 | Float_t ptMin = fReaderHeader->GetPtCut(); | |
145 | Float_t etaMin = fReaderHeader->GetFiducialEtaMin(); | |
146 | Float_t etaMax = fReaderHeader->GetFiducialEtaMax(); | |
d61f057d | 147 | UInt_t filterMask = ((AliJetAODReaderHeader*)fReaderHeader)->GetTestFilterMask(); |
586f2bc3 | 148 | //loop over tracks |
149 | Int_t aodTrack = 0; | |
150 | Float_t pt, eta; | |
151 | TVector3 p3; | |
d61f057d | 152 | |
586f2bc3 | 153 | for (Int_t it = 0; it < nt; it++) { |
d61f057d | 154 | AliAODTrack *track = fAOD->GetTrack(it); |
155 | ||
156 | Double_t mom[3] = {track->Px(),track->Py(),track->Pz()}; | |
157 | p3.SetXYZ(mom[0],mom[1],mom[2]); | |
158 | pt = p3.Pt(); | |
159 | eta = p3.Eta(); | |
160 | if((filterMask>0)&&!(track->TestFilterBit(filterMask)))continue; | |
161 | if ( pt < ptMin ) continue; // checking pt cut | |
162 | if ( (eta > etaMax) || (eta < etaMin)) continue; // checking eta cut | |
163 | sflag[aodTrack]=1; | |
164 | cflag[aodTrack]=1; | |
165 | new ((*fMomentumArray)[aodTrack++]) TLorentzVector(p3,p3.Mag()); | |
166 | fRef->Add(track); | |
586f2bc3 | 167 | } |
d61f057d | 168 | printf("Used AOD tracks: %5d ", aodTrack); |
586f2bc3 | 169 | // set the signal flags |
170 | fSignalFlag.Set(aodTrack,sflag); | |
171 | fCutFlag.Set(aodTrack,cflag); | |
d61f057d | 172 | |
680ed75f | 173 | delete [] sflag; |
174 | delete [] cflag; | |
d61f057d | 175 | |
586f2bc3 | 176 | return kTRUE; |
177 | } |