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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 finder base class | |
18 | // manages the search for jets | |
19 | // Author: jgcn@mda.cinvestav.mx | |
20 | //--------------------------------------------------------------------- | |
21 | ||
22 | #include <Riostream.h> | |
23 | #include <TFile.h> | |
24 | #include "AliGenPythiaEventHeader.h" | |
25 | #include "AliJetFinder.h" | |
26 | #include "AliJet.h" | |
27 | #include "AliJetReader.h" | |
28 | #include "AliJetReaderHeader.h" | |
29 | #include "AliJetControlPlots.h" | |
30 | #include "AliLeading.h" | |
31 | #include "AliHeader.h" | |
32 | ||
33 | ClassImp(AliJetFinder) | |
34 | ||
35 | ||
36 | AliJetFinder::AliJetFinder() | |
37 | { | |
38 | // Constructor | |
39 | fOut = 0x0; | |
40 | fJets = new AliJet(); | |
41 | fGenJets = new AliJet(); | |
42 | fLeading = new AliLeading(); | |
43 | fReader = 0x0; | |
44 | fPlots = 0x0; | |
45 | SetPlotMode(kFALSE); | |
46 | } | |
47 | ||
48 | //////////////////////////////////////////////////////////////////////// | |
49 | ||
50 | AliJetFinder::~AliJetFinder() | |
51 | { | |
52 | // destructor | |
53 | // here reset and delete jets | |
54 | fJets->ClearJets(); | |
55 | delete fJets; | |
56 | fGenJets->ClearJets(); | |
57 | delete fGenJets; | |
58 | // close file | |
59 | if (fOut) { | |
60 | fOut->Close(); | |
61 | fOut->Delete(); | |
62 | } | |
63 | delete fOut; | |
64 | // reset and delete control plots | |
65 | if (fPlots) delete fPlots; | |
66 | } | |
67 | ||
68 | //////////////////////////////////////////////////////////////////////// | |
69 | ||
70 | void AliJetFinder::SetOutputFile(const char *name) | |
71 | { | |
72 | // opens output file | |
73 | fOut = new TFile(name,"recreate"); | |
74 | } | |
75 | ||
76 | //////////////////////////////////////////////////////////////////////// | |
77 | ||
78 | void AliJetFinder::PrintJets() | |
79 | { | |
80 | // Print jet information | |
81 | cout << " Jets found with jet algorithm:" << endl; | |
82 | fJets->PrintJets(); | |
83 | cout << " Jets found by pythia:" << endl; | |
84 | fGenJets->PrintJets(); | |
85 | } | |
86 | ||
87 | //////////////////////////////////////////////////////////////////////// | |
88 | ||
89 | void AliJetFinder::SetPlotMode(Bool_t b) | |
90 | { | |
91 | // Sets the plotting mode | |
92 | fPlotMode=b; | |
93 | if (b && !fPlots) fPlots = new AliJetControlPlots(); | |
94 | } | |
95 | ||
96 | //////////////////////////////////////////////////////////////////////// | |
97 | ||
98 | void AliJetFinder::WriteJetsToFile(Int_t i) | |
99 | { | |
100 | // Writes the jets to file | |
101 | fOut->cd(); | |
102 | char hname[30]; | |
103 | sprintf(hname,"TreeJ%d",i); | |
104 | TTree* jetT = new TTree(hname,"AliJet"); | |
105 | jetT->Branch("FoundJet",&fJets,1000); | |
106 | jetT->Branch("GenJet",&fGenJets,1000); | |
107 | jetT->Branch("LeadingPart",&fLeading,1000); | |
108 | jetT->Fill(); | |
109 | jetT->Write(hname); | |
110 | delete jetT; | |
111 | } | |
112 | ||
113 | //////////////////////////////////////////////////////////////////////// | |
114 | ||
115 | void AliJetFinder::WriteRHeaderToFile() | |
116 | { | |
117 | // write reader header | |
118 | fOut->cd(); | |
119 | AliJetReaderHeader *rh = fReader->GetReaderHeader(); | |
120 | rh->Write(); | |
121 | } | |
122 | ||
123 | //////////////////////////////////////////////////////////////////////// | |
124 | ||
125 | void AliJetFinder::GetGenJets() | |
126 | { | |
127 | // Get the generated jet information from mc header | |
128 | AliHeader* alih = fReader->GetAliHeader(); | |
129 | if (alih == 0) return; | |
130 | AliGenEventHeader * genh = alih->GenEventHeader(); | |
131 | if (genh == 0) return; | |
132 | Int_t nj =((AliGenPythiaEventHeader*)genh)->NTriggerJets(); | |
133 | Int_t* m = new Int_t[nj]; | |
134 | Int_t* k = new Int_t[nj]; | |
135 | for (Int_t i=0; i< nj; i++) { | |
136 | Float_t p[4]; | |
137 | ((AliGenPythiaEventHeader*)genh)->TriggerJet(i,p); | |
138 | fGenJets->AddJet(p[0],p[1],p[2],p[3]); | |
139 | m[i]=1; | |
140 | k[i]=i; | |
141 | } | |
142 | fGenJets->SetNinput(nj); | |
143 | fGenJets->SetMultiplicities(m); | |
144 | fGenJets->SetInJet(k); | |
145 | } | |
146 | ||
147 | //////////////////////////////////////////////////////////////////////// | |
148 | ||
149 | void AliJetFinder::Run() | |
150 | { | |
151 | // do some initialization | |
152 | Init(); | |
153 | ||
154 | // connect files | |
155 | fReader->OpenInputFiles(); | |
156 | ||
157 | // write headers | |
158 | if (fOut) { | |
159 | fOut->cd(); | |
160 | WriteRHeaderToFile(); | |
161 | WriteJHeaderToFile(); | |
162 | } | |
163 | // loop over events | |
164 | Int_t nFirst,nLast; | |
165 | nFirst = fReader->GetReaderHeader()->GetFirstEvent(); | |
166 | nLast = fReader->GetReaderHeader()->GetLastEvent(); | |
167 | // loop over events | |
168 | for (Int_t i=nFirst;i<nLast;i++) { | |
169 | fReader->FillMomentumArray(i); | |
170 | fLeading->FindLeading(fReader); | |
171 | GetGenJets(); | |
172 | FindJets(); | |
173 | if (fOut) WriteJetsToFile(i); | |
174 | if (fPlots) fPlots->FillHistos(fJets); | |
175 | fLeading->Reset(); | |
176 | fGenJets->ClearJets(); | |
177 | Reset(); | |
178 | } | |
179 | // write out | |
180 | if (fPlots) { | |
181 | fPlots->Normalize(); | |
182 | fPlots->PlotHistos(); | |
183 | } | |
184 | if (fOut) { | |
185 | fOut->cd(); | |
186 | fPlots->Write(); | |
187 | fOut->Close(); | |
188 | } | |
189 | } |