]>
Commit | Line | Data |
---|---|---|
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> | |
27 | #include "AliJetAODReader.h" | |
28 | #include "AliJetAODReaderHeader.h" | |
29 | #include "AliAODEvent.h" | |
30 | #include "AliAODTrack.h" | |
31 | ||
32 | ClassImp(AliJetAODReader) | |
33 | ||
34 | AliJetAODReader::AliJetAODReader(): | |
35 | AliJetReader(), | |
36 | fChain(0x0), | |
37 | fAOD(0x0), | |
38 | fRef(new TRefArray), | |
39 | fDebug(0), | |
40 | fOpt(0) | |
41 | { | |
42 | // Constructor | |
43 | } | |
44 | ||
45 | //____________________________________________________________________________ | |
46 | ||
47 | AliJetAODReader::~AliJetAODReader() | |
48 | { | |
49 | // Destructor | |
50 | delete fChain; | |
51 | delete fAOD; | |
52 | delete fRef; | |
53 | } | |
54 | ||
55 | //____________________________________________________________________________ | |
56 | ||
57 | void AliJetAODReader::OpenInputFiles() | |
58 | { | |
59 | // Open the necessary input files | |
60 | // chain for the AODs | |
61 | fChain = new TChain("aodTree"); | |
62 | ||
63 | // get directory and pattern name from the header | |
64 | const char* dirName=fReaderHeader->GetDirectory(); | |
65 | const char* pattern=fReaderHeader->GetPattern(); | |
66 | ||
67 | // // Add files matching patters to the chain | |
68 | ||
69 | void *dir = gSystem->OpenDirectory(dirName); | |
70 | const char *name = 0x0; | |
71 | int naod = ((AliJetAODReaderHeader*) fReaderHeader)->GetNaod(); | |
72 | int a = 0; | |
73 | while ((name = gSystem->GetDirEntry(dir))){ | |
74 | if (a>=naod) continue; | |
75 | ||
76 | if (strstr(name,pattern)){ | |
77 | char path[256]; | |
78 | sprintf(path,"%s/%s/aod.root",dirName,name); | |
79 | fChain->AddFile(path); | |
80 | a++; | |
81 | } | |
82 | } | |
83 | ||
84 | gSystem->FreeDirectory(dir); | |
85 | ||
86 | ||
87 | fAOD = 0; | |
88 | fChain->SetBranchAddress("AOD",&fAOD); | |
89 | ||
90 | int nMax = fChain->GetEntries(); | |
91 | ||
92 | printf("\n AliJetAODReader: Total number of events in chain= %d \n",nMax); | |
93 | ||
94 | // set number of events in header | |
95 | if (fReaderHeader->GetLastEvent() == -1) | |
96 | fReaderHeader->SetLastEvent(nMax); | |
97 | else { | |
98 | Int_t nUsr = fReaderHeader->GetLastEvent(); | |
99 | fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr)); | |
100 | } | |
101 | } | |
102 | ||
103 | //____________________________________________________________________________ | |
104 | ||
105 | void AliJetAODReader::ConnectTree(TTree* tree, TObject* /*data*/) { | |
106 | // Connect the tree | |
107 | // For AOD reader it's needed only to set the number of events | |
108 | fChain = (TChain*) tree; | |
109 | ||
110 | Int_t nMax = fChain->GetEntries(); | |
111 | printf("\n AliJetAODReader: Total number of events in chain= %5d \n", nMax); | |
112 | // set number of events in header | |
113 | if (fReaderHeader->GetLastEvent() == -1) | |
114 | fReaderHeader->SetLastEvent(nMax); | |
115 | else { | |
116 | Int_t nUsr = fReaderHeader->GetLastEvent(); | |
117 | fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr)); | |
118 | } | |
119 | } | |
120 | ||
121 | //____________________________________________________________________________ | |
122 | ||
123 | Bool_t AliJetAODReader::FillMomentumArray(Int_t /*event*/) | |
124 | { | |
125 | // Clear momentum array | |
126 | ClearArray(); | |
127 | fDebug = fReaderHeader->GetDebug(); | |
128 | ||
129 | if (!fAOD) { | |
130 | return kFALSE; | |
131 | } | |
132 | ||
133 | // get number of tracks in event (for the loop) | |
134 | Int_t nt = fAOD->GetNTracks(); | |
135 | printf("Fill Momentum Array %5d ", nt); | |
136 | ||
137 | // temporary storage of signal and pt cut flag | |
138 | Int_t* sflag = new Int_t[nt]; | |
139 | Int_t* cflag = new Int_t[nt]; | |
140 | ||
141 | // get cuts set by user | |
142 | Float_t ptMin = fReaderHeader->GetPtCut(); | |
143 | Float_t etaMin = fReaderHeader->GetFiducialEtaMin(); | |
144 | Float_t etaMax = fReaderHeader->GetFiducialEtaMax(); | |
145 | ||
146 | //loop over tracks | |
147 | Int_t aodTrack = 0; | |
148 | Float_t pt, eta; | |
149 | TVector3 p3; | |
150 | for (Int_t it = 0; it < nt; it++) { | |
151 | AliAODTrack *track = fAOD->GetTrack(it); | |
152 | ||
153 | Double_t mom[3] = {track->Px(),track->Py(),track->Pz()}; | |
154 | p3.SetXYZ(mom[0],mom[1],mom[2]); | |
155 | pt = p3.Pt(); | |
156 | eta = p3.Eta(); | |
157 | if ( pt < ptMin ) continue; // checking pt cut | |
158 | if ( (eta > etaMax) || (eta < etaMin)) continue; // checking eta cut | |
159 | sflag[aodTrack]=1; | |
160 | cflag[aodTrack]=1; | |
161 | new ((*fMomentumArray)[aodTrack++]) TLorentzVector(p3,p3.Mag()); | |
162 | fRef->Add(track); | |
163 | } | |
164 | // set the signal flags | |
165 | fSignalFlag.Set(aodTrack,sflag); | |
166 | fCutFlag.Set(aodTrack,cflag); | |
167 | ||
168 | return kTRUE; | |
169 | } |