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50c7d9f7 | 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 | #include <Riostream.h> | |
17 | #include <TChain.h> | |
18 | #include <TFile.h> | |
19 | #include <TF1.h> | |
20 | #include <TRandom.h> | |
21 | #include <TList.h> | |
22 | #include <TLorentzVector.h> | |
23 | #include <TArrayF.h> | |
24 | #include <TClonesArray.h> | |
25 | ||
26 | #include "AliJetHeader.h" | |
27 | #include "AliJetReader.h" | |
28 | #include "AliJetReaderHeader.h" | |
29 | #include "AliJetHistos.h" | |
30 | ||
31 | #include "AliFastJetFinder.h" | |
32 | #include "AliFastJetHeaderV1.h" | |
33 | #include "AliJetReaderHeader.h" | |
34 | #include "AliJetReader.h" | |
35 | #include "AliJetESDReader.h" | |
36 | #include "AliJetUnitArray.h" | |
37 | #include "AliFastJetInput.h" | |
38 | ||
39 | #include "fastjet/PseudoJet.hh" | |
40 | #include "fastjet/ClusterSequenceArea.hh" | |
41 | #include "fastjet/AreaDefinition.hh" | |
42 | #include "fastjet/JetDefinition.hh" | |
43 | // get info on how fastjet was configured | |
44 | #include "fastjet/config.h" | |
45 | ||
46 | #ifdef ENABLE_PLUGIN_SISCONE | |
47 | #include "fastjet/SISConePlugin.hh" | |
48 | #endif | |
49 | ||
50 | #include<sstream> // needed for internal io | |
51 | #include<vector> | |
52 | #include <cmath> | |
53 | ||
54 | using namespace std; | |
55 | ||
56 | ||
57 | ClassImp(AliFastJetInput) | |
58 | ||
59 | //////////////////////////////////////////////////////////////////////// | |
60 | ||
61 | AliFastJetInput::AliFastJetInput(): | |
62 | fReader(0), | |
63 | fHeader(0), | |
64 | fInputParticles(0), | |
65 | fInputParticlesCh(0) | |
66 | { | |
67 | // Default constructor | |
68 | } | |
69 | AliFastJetInput::AliFastJetInput(const AliFastJetInput &input): | |
70 | TObject(), | |
71 | fReader(input.fReader), | |
72 | fHeader(input.fHeader), | |
73 | fInputParticles(input.fInputParticles), | |
74 | fInputParticlesCh(input.fInputParticlesCh) | |
75 | { | |
76 | // copy constructor | |
77 | } | |
78 | //______________________________________________________________________ | |
79 | AliFastJetInput& AliFastJetInput::operator=(const AliFastJetInput& source){ | |
80 | // Assignment operator. | |
81 | this->~AliFastJetInput(); | |
82 | new(this) AliFastJetInput(source); | |
83 | return *this; | |
84 | ||
85 | } | |
86 | //___________________________________________________________ | |
87 | void AliFastJetInput::FillInput(){ | |
88 | //cout<<"-------- AliFastJetInput::FillInput() ----------------"<<endl; | |
89 | ||
90 | AliFastJetHeaderV1 *header = (AliFastJetHeaderV1*)fHeader; | |
91 | fInputParticles.clear(); | |
92 | fInputParticlesCh.clear(); | |
93 | ||
cc6a2227 | 94 | Int_t debug = header->GetDebug(); // debug option |
95 | Int_t fOpt = fReader->GetReaderHeader()->GetDetector(); | |
50c7d9f7 | 96 | |
50c7d9f7 | 97 | // RUN ALGORITHM |
98 | // read input particles ----------------------------- | |
99 | vector<fastjet::PseudoJet> inputParticles; | |
100 | // cout<<"=============== AliFastJetInput::FillInput() =========== fOpt="<<fOpt<<endl; | |
101 | //cout<<"pointers --> fReader="<<fReader<<" header="<<header<<" fHeader="<<fHeader<<endl; | |
102 | //cout<<"Rparam="<<Rparam<<" ghost_etamax="<<ghost_etamax<<" ghost_area="<<ghost_area<<endl; | |
103 | //cout<<fReader->ClassName()<<endl; | |
104 | ||
105 | if(fOpt==0) | |
106 | { | |
107 | TClonesArray *lvArray = fReader->GetMomentumArray(); | |
108 | if(lvArray == 0) { cout << "Could not get the momentum array" << endl; return; } | |
109 | Int_t nIn = lvArray->GetEntries(); | |
110 | if(nIn == 0) { if (debug) cout << "entries = 0 ; Event empty !!!" << endl ; return; } | |
111 | Float_t px,py,pz,en; | |
112 | // load input vectors | |
113 | for(Int_t i = 0; i < nIn; i++){ // loop for all input particles | |
9e7ec179 | 114 | if(fReader->GetCutFlag(i)!=1)continue; // pt cut |
50c7d9f7 | 115 | TLorentzVector *lv = (TLorentzVector*) lvArray->At(i); |
116 | px = lv->Px(); | |
117 | py = lv->Py(); | |
118 | pz = lv->Pz(); | |
119 | en = lv->Energy(); | |
9e7ec179 | 120 | |
50c7d9f7 | 121 | // cout<<"in FillInput...... "<<i<<" "<<px<<" "<<py<<" "<<pz<<" "<<en<<endl; |
122 | fastjet::PseudoJet inputPart(px,py,pz,en); // create PseudoJet object | |
123 | inputPart.set_user_index(i); //label the particle into Fastjet algortihm | |
124 | fInputParticles.push_back(inputPart); // back of the inputParticles vector | |
125 | } // end loop | |
126 | } | |
127 | else { | |
128 | TClonesArray* fUnit = fReader->GetUnitArray(); | |
129 | if(fUnit == 0) { cout << "Could not get the momentum array" << endl; return; } | |
130 | Int_t nIn = fUnit->GetEntries(); | |
131 | if(nIn == 0) { if (debug) cout << "entries = 0 ; Event empty !!!" << endl ; return; } | |
132 | ||
133 | // Information extracted from fUnitArray | |
134 | // load input vectors and calculate total energy in array | |
135 | Float_t pt,eta,phi,theta,px,py,pz,en; | |
136 | Int_t ipart = 0; | |
137 | Int_t countUnit=0,countUnitNonZero=0; | |
138 | //cout<<" nIn = "<<nIn<<endl; | |
139 | ||
140 | for(Int_t i=0; i<nIn; i++) | |
141 | { | |
142 | AliJetUnitArray *uArray = (AliJetUnitArray*)fUnit->At(i); | |
143 | if(uArray->GetUnitEnergy()>0.){ | |
144 | countUnit++; | |
145 | // It is not necessary anymore to cut on particle pt | |
146 | pt = uArray->GetUnitEnergy(); | |
147 | eta = uArray->GetUnitEta(); | |
148 | phi = uArray->GetUnitPhi(); | |
149 | theta = EtaToTheta(eta); | |
150 | en = (TMath::Abs(TMath::Sin(theta)) == 0) ? pt : pt/TMath::Abs(TMath::Sin(theta)); | |
151 | px = TMath::Cos(phi)*pt; | |
152 | py = TMath::Sin(phi)*pt; | |
153 | pz = en*TMath::TanH(eta); | |
154 | if(debug) cout << "pt: " << pt << ", eta: " << eta << ", phi: " << phi << ", en: " << en << ", px: " << px << ", py: " << py << ", pz: " << pz << endl; | |
155 | //cout << i<<" "<<"pt: " << pt << ", eta: " << eta << ", phi: " << phi << ", en: " << en << ", px: " << px << ", py: " << py << ", pz: " << pz << endl; | |
156 | //cout<<"in FillInput...... "<<i<<" "<<px<<" "<<py<<" "<<pz<<" "<<en<<endl; | |
157 | ||
158 | fastjet::PseudoJet inputPart(px,py,pz,en); // create PseudoJet object | |
159 | inputPart.set_user_index(ipart); //label the particle into Fastjet algortihm | |
160 | fInputParticles.push_back(inputPart); // back of the inputParticles vector | |
161 | ipart++; | |
162 | ||
163 | ||
164 | ||
165 | //only for charged particles (TPC+ITS) | |
166 | TRefArray* ref = uArray->GetUnitTrackRef(); | |
167 | Int_t nRef = ref->GetEntries(); | |
168 | for(Int_t j=0; j<nRef;j++){ | |
169 | Float_t pxj=0.; Float_t pyj=0.; Float_t pzj=0.;Float_t enj=0.; | |
170 | pxj = ((AliVTrack*)ref->At(j))->Px(); | |
171 | pyj = ((AliVTrack*)ref->At(j))->Py(); | |
172 | pzj = ((AliVTrack*)ref->At(j))->Pz(); | |
173 | enj=TMath::Sqrt(pxj*pxj+pyj*pyj+pzj*pzj); | |
174 | fastjet::PseudoJet inputPartCh(pxj,pyj,pzj,enj); // create PseudoJet object | |
175 | inputPartCh.set_user_index(((AliVTrack*)ref->At(j))->GetID()); //label the particle into Fastjet algortihm | |
176 | fInputParticlesCh.push_back(inputPartCh); // back of the inputParticles vector | |
177 | ||
178 | } | |
179 | } | |
180 | } // End loop on UnitArray | |
c01e7c1b | 181 | if (debug) cout<<"countUnit(En>0) = "<<countUnit<<" countUnit with Non ZeroSize = "<<countUnitNonZero<<endl; |
50c7d9f7 | 182 | } |
183 | ||
184 | } | |
185 | ||
186 | //_____________________________________________________________________ | |
187 | Float_t AliFastJetInput::EtaToTheta(Float_t arg) | |
188 | { | |
189 | // return (180./TMath::Pi())*2.*atan(exp(-arg)); | |
190 | return 2.*atan(exp(-arg)); | |
191 | ||
192 | ||
193 | } | |
1240edf5 | 194 | Double_t AliFastJetInput::Thermalspectrum(const Double_t *x, const Double_t *par){ |
50c7d9f7 | 195 | |
196 | return x[0]*TMath::Exp(-x[0]/par[0]); | |
197 | ||
198 | } |