1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 //---------------------------------------------------------------------
18 // Stores the output of a jet algorithm
19 // Author: jgcn@mda.cinvestav.mx
20 //---------------------------------------------------------------------
22 #include <Riostream.h>
23 #include <TClonesArray.h>
24 #include <TLorentzVector.h>
33 fJets = new TClonesArray("TLorentzVector",1000);
41 fPtFromSignal=TArrayF();
42 fMultiplicities=TArrayI();
46 ////////////////////////////////////////////////////////////////////////
57 ////////////////////////////////////////////////////////////////////////
59 Bool_t AliJet::OutOfRange(Int_t i, const char *s) const
61 // checks if i is a valid index. s = name of calling method
62 if (i >= fNJets || i < 0) {
63 cout << s << " Index " << i << " out of range" << endl;
69 ////////////////////////////////////////////////////////////////////////
71 TLorentzVector* AliJet::GetJet(Int_t i)
74 if (OutOfRange(i, "AliJet::GetJet:")) return 0;
75 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
79 ////////////////////////////////////////////////////////////////////////
81 Int_t AliJet::GetMultiplicity(Int_t i) const
83 // gets multiplicity of i-jet
84 if (OutOfRange(i, "AliJet::GetMultiplicity:")) return 0;
85 return fMultiplicities[i];
88 ////////////////////////////////////////////////////////////////////////
90 Int_t AliJet::GetNCell(Int_t i) const
92 // gets number of cell of i-jet
93 if (OutOfRange(i, "AliJet::GetNCell:")) return 0;
97 ////////////////////////////////////////////////////////////////////////
99 Double_t AliJet::GetPx(Int_t i)
101 // Get Px component of jet i
102 if (OutOfRange(i, "AliJet::GetPx:")) return -1e30;
103 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
107 ////////////////////////////////////////////////////////////////////////
109 Double_t AliJet::GetPy(Int_t i)
111 // Get Py component of jet i
112 if (OutOfRange(i, "AliJet::GetPy:")) return -1e30;
113 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
117 ////////////////////////////////////////////////////////////////////////
119 Double_t AliJet::GetPz(Int_t i)
121 // Get Pz component of jet i
122 if (OutOfRange(i, "AliJet::GetPz:")) return -1e30;
123 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
127 ////////////////////////////////////////////////////////////////////////
129 Double_t AliJet::GetP(Int_t i)
131 // Get momentum of jet i
132 if (OutOfRange(i, "AliJet::GetP:")) return -1e30;
133 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
137 ////////////////////////////////////////////////////////////////////////
139 Double_t AliJet::GetE(Int_t i)
141 // Get energy of jet i
142 if (OutOfRange(i, "AliJet::GetE:")) return -1e30;
143 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
147 ////////////////////////////////////////////////////////////////////////
149 Double_t AliJet::GetPt(Int_t i)
151 // Get transverse momentum of jet i
152 if (OutOfRange(i, "AliJet::GetPt:")) return -1e30;
153 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
157 ////////////////////////////////////////////////////////////////////////
159 Double_t AliJet::GetEta(Int_t i)
162 if (OutOfRange(i, "AliJet::GetEta:")) return -1e30;
163 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
167 ////////////////////////////////////////////////////////////////////////
169 Double_t AliJet::GetPhi(Int_t i)
172 if (OutOfRange(i, "AliJet::GetPhi:")) return -1e30;
173 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
174 return ( (lv->Phi() < 0) ? (lv->Phi()) + 2. * TMath::Pi() : lv->Phi());
177 ////////////////////////////////////////////////////////////////////////
179 Double_t AliJet::GetTheta(Int_t i)
181 // Get theta of jet i
182 if (OutOfRange(i, "AliJet::GetTheta:")) return -1e30;
183 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
187 ////////////////////////////////////////////////////////////////////////
189 Double_t AliJet::GetMass(Int_t i)
191 // Get invariant mass of jet i
192 if (OutOfRange(i, "AliJet::GetMass:")) return -1e30;
193 TLorentzVector *lv = (TLorentzVector*) fJets->At(i);
197 ////////////////////////////////////////////////////////////////////////
200 void AliJet::AddJet(Double_t px, Double_t py, Double_t pz, Double_t e)
202 // Add new jet to the list
203 new ((*fJets)[fNJets++]) TLorentzVector(px,py,pz,e);
206 ////////////////////////////////////////////////////////////////////////
208 void AliJet::SetInJet(Int_t* j)
210 // set information of which input object belongs
211 // to each jet. If zero, object was not assigned to
212 // a jet, if n,positive, it was assiged to jet n
213 // if n, negative, it is within cone of jet n, but
214 // it did not passed the user cuts. filled in by AliJetFinder
216 if (fNInput>0) fInJet.Set(fNInput, j);
219 ////////////////////////////////////////////////////////////////////////
221 void AliJet::SetEtaIn(Float_t* r)
223 if (fNInput>0) fEtaIn.Set(fNInput, r);
226 ////////////////////////////////////////////////////////////////////////
228 void AliJet::SetPtIn(Float_t* pt)
230 if (fNInput>0) fPtIn.Set(fNInput, pt);
233 ////////////////////////////////////////////////////////////////////////
235 void AliJet::SetPhiIn(Float_t* x)
237 if (fNInput>0) fPhiIn.Set(fNInput, x);
240 ////////////////////////////////////////////////////////////////////////
242 void AliJet::SetPtFromSignal(Float_t* p)
244 // set information of percentage of pt of jets
245 // coming from signal (ie Pythia)
246 if (fNJets>0) fPtFromSignal.Set(fNJets, p);
249 ////////////////////////////////////////////////////////////////////////
251 void AliJet::SetMultiplicities(Int_t* m)
253 // set information of jet multiplicities
254 // filled in by AliJetFinder
255 if (fNJets>0) fMultiplicities.Set(fNJets, m);
258 ////////////////////////////////////////////////////////////////////////
260 void AliJet::SetNCells(Int_t* n)
262 if (fNJets>0) fNCells.Set(fNJets, n);
265 ////////////////////////////////////////////////////////////////////////
267 void AliJet::ClearJets(Option_t *option)
270 fJets->Clear(option);
273 fMultiplicities.Set(0);
275 fPtFromSignal.Set(0);
282 ////////////////////////////////////////////////////////////////////////
284 void AliJet::PrintJets()
286 // Print jet information
288 cout << " AliJet::PrintJets: There are no jets in this event " << endl;
291 cout << " AliJet::PrintJets: There are " << fNJets
292 << " jets in this event" << endl;
293 for(Int_t i=0;i<fNJets;i++) {
294 cout << " Jet " << i << " (px,py,pz,en)=(" << GetPx(i)
299 cout << " (pt,eta,phi)=(" << GetPt(i)
301 << "," << GetPhi(i) << ")" << endl;
302 cout << " # of tracks =" << GetMultiplicity(i) << endl;