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99e5fe42 | 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 | **************************************************************************/ | |
99e5fe42 | 15 | |
16 | //--------------------------------------------------------------------- | |
17 | // UA1 Jet finder | |
18 | // manages the search for jets | |
19 | // Author: jgcn@mda.cinvestav.mx | |
20 | // (code adapted from EMCAL directory) | |
21 | //--------------------------------------------------------------------- | |
22 | ||
23 | #include <Riostream.h> | |
24 | #include <TLorentzVector.h> | |
83a444b1 | 25 | #include <TFile.h> |
99e5fe42 | 26 | #include <TH2F.h> |
27 | #include "AliUA1JetFinder.h" | |
28 | #include "AliUA1JetHeader.h" | |
29 | #include "UA1Common.h" | |
8011d399 | 30 | #include "AliJetReaderHeader.h" |
99e5fe42 | 31 | #include "AliJetReader.h" |
32 | #include "AliJet.h" | |
33 | ||
34 | ||
35 | ClassImp(AliUA1JetFinder) | |
36 | ||
37 | //////////////////////////////////////////////////////////////////////// | |
38 | ||
1b7d5d7e | 39 | AliUA1JetFinder::AliUA1JetFinder(): |
40 | fHeader(0x0), | |
41 | fLego(0x0) | |
99e5fe42 | 42 | { |
1b7d5d7e | 43 | // Default constructor |
99e5fe42 | 44 | } |
45 | ||
46 | //////////////////////////////////////////////////////////////////////// | |
47 | ||
48 | AliUA1JetFinder::~AliUA1JetFinder() | |
49 | ||
50 | { | |
99e5fe42 | 51 | // destructor |
99e5fe42 | 52 | } |
53 | ||
54 | //////////////////////////////////////////////////////////////////////// | |
55 | ||
56 | #ifndef WIN32 | |
57 | # define ua1_jet_finder ua1_jet_finder_ | |
58 | # define hf1 hf1_ | |
59 | # define type_of_call | |
60 | ||
61 | #else | |
62 | # define ua1_jet_finder UA1_JET_FINDER | |
63 | # define hf1 HF1 | |
64 | # define type_of_call _stdcall | |
65 | #endif | |
66 | ||
67 | extern "C" void type_of_call | |
68 | ua1_jet_finder(Int_t& ncell, Int_t& ncell_tot, | |
69 | Float_t etc[60000], Float_t etac[60000], | |
70 | Float_t phic[60000], | |
71 | Float_t& min_move, Float_t& max_move, Int_t& mode, | |
72 | Float_t& prec_bg, Int_t& ierror); | |
73 | ||
74 | extern "C" void type_of_call hf1(Int_t& id, Float_t& x, Float_t& wgt); | |
75 | ||
76 | //////////////////////////////////////////////////////////////////////// | |
77 | ||
b45b0c92 | 78 | void AliUA1JetFinder::FindJetsTPC() |
99e5fe42 | 79 | |
80 | { | |
81 | // initialize event, look for jets, download jet info | |
82 | ||
99e5fe42 | 83 | // initialization in 2 steps |
84 | // 1) transform input to pt,eta,phi plus lego | |
85 | // 2) dump lego | |
86 | ||
87 | // 1) transform input to pt,eta,phi plus lego | |
88 | TClonesArray *lvArray = fReader->GetMomentumArray(); | |
89 | Int_t nIn = lvArray->GetEntries(); | |
90 | if (nIn == 0) return; | |
91 | ||
92 | // local arrays for input | |
83a444b1 | 93 | Float_t* enT = new Float_t[nIn]; |
99e5fe42 | 94 | Float_t* ptT = new Float_t[nIn]; |
95 | Float_t* etaT = new Float_t[nIn]; | |
96 | Float_t* phiT = new Float_t[nIn]; | |
97 | ||
98 | // load input vectors | |
99 | for (Int_t i = 0; i < nIn; i++){ | |
83a444b1 | 100 | TLorentzVector *lv = (TLorentzVector*) lvArray->At(i); |
101 | enT[i] = lv->Energy(); | |
102 | ptT[i] = lv->Pt(); | |
103 | etaT[i] = lv->Eta(); | |
104 | phiT[i] = ((lv->Phi() < 0) ? (lv->Phi()) + 2 * TMath::Pi() : lv->Phi()); | |
105 | if (fReader->GetCutFlag(i) == 1) | |
99e5fe42 | 106 | fLego->Fill(etaT[i], phiT[i], ptT[i]); |
107 | } | |
108 | fJets->SetNinput(nIn); | |
109 | ||
110 | // 2) dump lego | |
111 | // check enough space! *to be done* | |
112 | Float_t etCell[60000]; //! Cell Energy | |
113 | Float_t etaCell[60000]; //! Cell eta | |
114 | Float_t phiCell[60000]; //! Cell phi | |
115 | ||
116 | Int_t nCell = 0; | |
117 | TAxis* xaxis = fLego->GetXaxis(); | |
118 | TAxis* yaxis = fLego->GetYaxis(); | |
119 | Float_t e = 0.0; | |
83a444b1 | 120 | for (Int_t i = 1; i <= fHeader->GetLegoNbinEta(); i++) { |
121 | for (Int_t j = 1; j <= fHeader->GetLegoNbinPhi(); j++) { | |
99e5fe42 | 122 | e = fLego->GetBinContent(i,j); |
123 | if (e > 0.0) e -= fHeader->GetMinCellEt(); | |
124 | if (e < 0.0) e = 0.; | |
125 | Float_t eta = xaxis->GetBinCenter(i); | |
126 | Float_t phi = yaxis->GetBinCenter(j); | |
127 | etCell[nCell] = e; | |
128 | etaCell[nCell] = eta; | |
129 | phiCell[nCell] = phi; | |
130 | nCell++; | |
131 | } | |
132 | } | |
133 | ||
134 | // run the algo. Parameters from header | |
83a444b1 | 135 | Int_t nTot = (fHeader->GetLegoNbinEta())*(fHeader->GetLegoNbinPhi()); |
99e5fe42 | 136 | Float_t minmove = fHeader->GetMinMove(); |
137 | Float_t maxmove = fHeader->GetMaxMove(); | |
138 | Int_t mode = fHeader->GetMode(); | |
139 | Float_t precbg = fHeader->GetPrecBg(); | |
140 | Int_t ierror; | |
141 | ua1_jet_finder(nCell, nTot, etCell, etaCell, phiCell, | |
142 | minmove, maxmove, mode, precbg, ierror); | |
143 | ||
99e5fe42 | 144 | // sort jets |
145 | Int_t * idx = new Int_t[UA1JETS.njet]; | |
146 | TMath::Sort(UA1JETS.njet, UA1JETS.etj, idx); | |
8011d399 | 147 | |
148 | // download jet info. | |
8011d399 | 149 | for(Int_t i = 0; i < UA1JETS.njet; i++) { |
150 | // reject events outside acceptable eta range | |
83a444b1 | 151 | if (((UA1JETS.etaj[1][idx[i]])> (fHeader->GetJetEtaMax())) |
152 | || ((UA1JETS.etaj[1][idx[i]]) < (fHeader->GetJetEtaMin()))) | |
153 | continue; | |
154 | Float_t px, py,pz,en; // convert to 4-vector | |
155 | px = UA1JETS.etj[idx[i]] * TMath::Cos(UA1JETS.phij[1][idx[i]]); | |
156 | py = UA1JETS.etj[idx[i]] * TMath::Sin(UA1JETS.phij[1][idx[i]]); | |
157 | pz = UA1JETS.etj[idx[i]] / | |
158 | TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-UA1JETS.etaj[1][idx[i]]))); | |
159 | en = TMath::Sqrt(px * px + py * py + pz * pz); | |
160 | fJets->AddJet(px, py, pz, en); | |
8011d399 | 161 | } |
99e5fe42 | 162 | |
8011d399 | 163 | // find multiplicities and relationship jet-particle |
164 | // find also percentage of pt from pythia | |
99e5fe42 | 165 | Int_t* injet = new Int_t[nIn]; |
83a444b1 | 166 | Int_t* sflag = new Int_t[nIn]; |
167 | for (Int_t i = 0; i < nIn; i++) {injet[i]= 0;sflag[i]=0;} | |
8011d399 | 168 | Int_t* mult = new Int_t[fJets->GetNJets()]; |
83a444b1 | 169 | Int_t* ncell = new Int_t[fJets->GetNJets()]; |
8011d399 | 170 | Float_t* percentage = new Float_t[fJets->GetNJets()]; |
171 | ||
172 | for(Int_t i = 0; i < (fJets->GetNJets()); i++) { | |
83a444b1 | 173 | Float_t pt_sig = 0.0; |
174 | mult[i] = 0; | |
175 | ncell[i] = UA1JETS.ncellj[i]; | |
176 | for (Int_t j = 0; j < nIn; j++) { | |
177 | Float_t deta = etaT[j] - fJets->GetEta(i); | |
178 | Float_t dphi = phiT[j] - fJets->GetPhi(i); | |
179 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
180 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
181 | Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
182 | if (dr < fHeader->GetRadius() && injet[j] == 0) { | |
183 | injet[j] = -(i+1); | |
184 | if ((fReader->GetCutFlag(j)) == 1 && | |
185 | (etaT[j] < fHeader->GetLegoEtaMax()) && | |
186 | (etaT[j] > fHeader->GetLegoEtaMin())) { | |
187 | injet[j] = i+1; | |
188 | mult[i]++; | |
189 | if (fReader->GetSignalFlag(j) == 1) { | |
190 | pt_sig+=ptT[j]; | |
191 | sflag[j]=1; | |
192 | } | |
193 | } | |
194 | } | |
99e5fe42 | 195 | } |
83a444b1 | 196 | percentage[i] = (pt_sig-ncell[i]*UA1JETS.etavg)/ |
197 | ((Double_t) fJets->GetPt(i)); | |
99e5fe42 | 198 | } |
83a444b1 | 199 | fJets->SetNCells(ncell); |
8011d399 | 200 | fJets->SetPtFromSignal(percentage); |
99e5fe42 | 201 | fJets->SetMultiplicities(mult); |
202 | fJets->SetInJet(injet); | |
83a444b1 | 203 | fJets->SetEtaIn(etaT); |
204 | fJets->SetPhiIn(phiT); | |
205 | fJets->SetPtIn(ptT); | |
206 | fJets->SetEtAvg(UA1JETS.etavg); | |
207 | delete ncell; | |
208 | delete enT; | |
209 | delete ptT; | |
210 | delete etaT; | |
211 | delete phiT; | |
212 | delete injet; | |
213 | delete idx; | |
214 | delete mult; | |
215 | delete percentage; | |
99e5fe42 | 216 | } |
217 | ||
b45b0c92 | 218 | void AliUA1JetFinder::FindJets() |
219 | { // Find jets with TPC or EMCAL or TPC + EMCAL information | |
220 | // initialize event, look for jets, download jet info | |
221 | ||
222 | // 1) transform input to pt,eta,phi plus lego | |
223 | AliJetUnitArray *fUnit = fReader->GetUnitArray(); | |
224 | Int_t nIn = fUnit->GetUnitEntries(); | |
225 | Int_t fOption = fReader->GetReaderHeader()->GetDetector(); | |
226 | Int_t fDebug = fReader->GetReaderHeader()->GetDebug(); | |
227 | ||
228 | if(fDebug>1){ | |
229 | printf("Inside FindJets function ! \n"); | |
230 | printf("fOption : %d \n",fOption); | |
231 | } | |
232 | ||
233 | if(fDebug>10){ | |
234 | cout << "fUnit : " << fUnit << endl; | |
235 | printf("nIn = fUnit->GetUnitEntries() : %d \n",nIn); | |
236 | } | |
237 | ||
238 | if(fDebug>10){ | |
239 | printf(" -----------------------------------------------------------------\n"); | |
240 | printf(" --- All inputs in fUnitArray ---\n"); | |
241 | for(Int_t i=0; i<nIn ; i++){ | |
242 | if(fUnit[i].GetUnitEnergy()!=0){ | |
243 | printf(" -----------------------------------------------------------------\n"); | |
244 | cout << " | ID : " << fUnit[i].GetUnitID() << " | Eta : " << fUnit[i].GetUnitEta() << " | Phi : " << fUnit[i].GetUnitPhi() << " | Energy : " << fUnit[i].GetUnitEnergy() << " |" <<endl; | |
245 | } | |
246 | } | |
247 | } | |
248 | ||
249 | if (nIn == 0) return; | |
250 | ||
251 | Int_t nCandidateCut = 0; | |
252 | Int_t nCandidateCut2 = 0; | |
253 | Int_t nCandidate = 0; | |
254 | for (Int_t i = 0; i < nIn; i++){ | |
255 | if(fUnit[i].GetUnitEnergy()>0. && fUnit[i].GetUnitCutFlag()==1) { | |
256 | // Number of good tracks/digits which have passed the pt cut | |
257 | nCandidateCut += 1; | |
258 | } | |
259 | if(fUnit[i].GetUnitEnergy()>0.) { | |
260 | // Number of good tracks/digits without pt cut | |
261 | nCandidate += 1; | |
262 | } | |
263 | } | |
264 | ||
265 | if(fDebug>=3){ | |
266 | cout << "nCandidate : " << nCandidate << endl; | |
267 | cout << "nCandidateCut : " << nCandidateCut << endl; | |
268 | cout << "nCandidateCut2 : " << nCandidateCut2 << endl; | |
269 | } | |
270 | ||
271 | // local arrays for input No Cuts | |
272 | // Both pt < ptMin and pt > ptMin | |
273 | Float_t* enT = new Float_t[nCandidate]; | |
274 | Float_t* ptT = new Float_t[nCandidate]; | |
275 | Float_t* etaT = new Float_t[nCandidate]; | |
276 | Float_t* phiT = new Float_t[nCandidate]; | |
277 | Float_t* detaT = new Float_t[nCandidate]; | |
278 | Float_t* dphiT = new Float_t[nCandidate]; | |
279 | Float_t* cFlagT = new Float_t[nCandidate]; | |
280 | Float_t* cClusterT = new Float_t[nCandidate]; | |
281 | Float_t* idT = new Float_t[nCandidate]; | |
282 | Int_t loop1 = 0; | |
283 | ||
284 | fJets->SetNinput(nCandidate); | |
285 | ||
286 | if(fDebug>3){ | |
287 | cout << "nCandidate : " << nCandidate << endl; | |
288 | // cout << "nMultCandidate : " << nMultCandidate << endl; | |
289 | } | |
290 | ||
291 | Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray | |
292 | Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray | |
293 | Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray | |
294 | ||
295 | // Information extracted from fUnitArray | |
296 | for(Int_t i=0; i<nIn; i++) | |
297 | { | |
298 | if(fUnit[i].GetUnitCutFlag()==1){ | |
299 | etCell[i] = fUnit[i].GetUnitEnergy(); | |
300 | if (etCell[i] > 0.0) etCell[i] -= fHeader->GetMinCellEt(); | |
301 | if (etCell[i] < 0.0) etCell[i] = 0.; | |
302 | etaCell[i] = fUnit[i].GetUnitEta(); | |
303 | phiCell[i] = fUnit[i].GetUnitPhi(); | |
304 | } | |
305 | else { | |
306 | etCell[i] = 0.; | |
307 | etaCell[i] = fUnit[i].GetUnitEta(); | |
308 | phiCell[i] = fUnit[i].GetUnitPhi(); | |
309 | } | |
310 | ||
311 | if(fUnit[i].GetUnitEnergy()>0.){ | |
312 | ptT[loop1] = fUnit[i].GetUnitEnergy(); | |
313 | enT[loop1] = fUnit[i].GetUnitEnergy(); | |
314 | etaT[loop1] = fUnit[i].GetUnitEta(); | |
315 | phiT[loop1] = fUnit[i].GetUnitPhi(); | |
316 | detaT[loop1] = fUnit[i].GetUnitDeta(); | |
317 | dphiT[loop1] = fUnit[i].GetUnitDphi(); | |
318 | cFlagT[loop1]= fUnit[i].GetUnitCutFlag(); | |
319 | idT[loop1] = fUnit[i].GetUnitID(); | |
320 | loop1++; | |
321 | } | |
322 | } | |
323 | ||
324 | ||
325 | if(fDebug > 40) // For comparison | |
326 | { | |
327 | for(Int_t j=0; j<nIn; j++) { | |
328 | if(etCell[j]>0){ | |
329 | cout << "etCell[" << j << "] : " << etCell[j] << endl; | |
330 | cout << "etaCell[" << j << "] : " << etaCell[j] << endl; | |
331 | cout << "phiCell[" << j << "] : " << phiCell[j] << endl; | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
336 | // Run the algo. Parameters from header | |
337 | // Int_t nTot = (fHeader->GetLegoNbinEta())*(fHeader->GetLegoNbinPhi()); | |
338 | Int_t nTot = nIn; | |
339 | Float_t minmove = fHeader->GetMinMove(); | |
340 | Float_t maxmove = fHeader->GetMaxMove(); | |
341 | Int_t mode = fHeader->GetMode(); | |
342 | Float_t precbg = fHeader->GetPrecBg(); | |
343 | Int_t ierror; | |
344 | ||
345 | ua1_jet_finder(nIn, nTot, etCell, etaCell, phiCell, | |
346 | minmove, maxmove, mode, precbg, ierror); | |
347 | ||
348 | // sort jets | |
349 | Int_t * idx = new Int_t[UA1JETS.njet]; | |
350 | TMath::Sort(UA1JETS.njet, UA1JETS.etj, idx); | |
351 | ||
352 | if(fDebug > 20) | |
353 | { | |
354 | for(Int_t i = 0; i < UA1JETS.njet; i++) | |
355 | { | |
356 | cout << "Number of jets found, UA1JETS.njet : " << UA1JETS.njet << endl; | |
357 | cout << "UA1JETS.etj : " << UA1JETS.etj << endl; | |
358 | cout << "idx[" << i << "] : " << idx[i] << endl; | |
359 | cout << "UA1JETS.etaj[1][" << idx[i] << "] : " << UA1JETS.etaj[1][idx[i]] << endl; | |
360 | cout << "UA1JETS.phij[1][" << idx[i] << "] : " << UA1JETS.phij[1][idx[i]] << endl; | |
361 | cout << "UA1JETS.etj[" << idx[i] << "] : " << UA1JETS.etj[idx[i]] << endl; | |
362 | } | |
363 | } | |
364 | ||
365 | // download jet info. | |
366 | for(Int_t i = 0; i < UA1JETS.njet; i++) { | |
367 | // reject events outside acceptable eta range | |
368 | if (((UA1JETS.etaj[1][idx[i]])> (fHeader->GetJetEtaMax())) | |
369 | || ((UA1JETS.etaj[1][idx[i]]) < (fHeader->GetJetEtaMin()))) | |
370 | { | |
371 | continue; | |
372 | } | |
373 | ||
374 | Float_t px, py,pz,en,pT; // convert to 4-vector | |
375 | px = UA1JETS.etj[idx[i]] * TMath::Cos(UA1JETS.phij[1][idx[i]]); | |
376 | py = UA1JETS.etj[idx[i]] * TMath::Sin(UA1JETS.phij[1][idx[i]]); | |
377 | pz = UA1JETS.etj[idx[i]] / | |
378 | TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-UA1JETS.etaj[1][idx[i]]))); | |
379 | en = TMath::Sqrt(px * px + py * py + pz * pz); | |
380 | pT = TMath::Sqrt(px * px + py * py); | |
381 | ||
382 | fJets->AddJet(px, py, pz, en); | |
383 | ||
384 | } | |
385 | ||
386 | // find multiplicities and relationship jet-particle | |
387 | // find also percentage of pt from pythia | |
388 | ||
389 | Int_t* injet = new Int_t[nCandidate]; | |
390 | Int_t* sflag = new Int_t[nCandidate]; | |
391 | for (Int_t i = 0; i < nCandidate; i++) {injet[i]= 0;sflag[i]=0;} | |
392 | Int_t* mult = new Int_t[fJets->GetNJets()]; | |
393 | Int_t* ncell = new Int_t[fJets->GetNJets()]; | |
394 | Float_t* percentage = new Float_t[fJets->GetNJets()]; | |
395 | ||
396 | // Instead of using etaT below, it would be interesting to use the previous fUnitArray object | |
397 | // With the particle ID, it is possible to to have access to its physical properties and one can, | |
398 | // for example, set if the corresponding particle is inside or outside the jet with the flag | |
399 | // kOutJet/kInJet, other possibilities... | |
400 | ||
401 | for(Int_t i = 0; i < (fJets->GetNJets()); i++) { | |
402 | Float_t pt_sig = 0.0; | |
403 | mult[i] = 0; | |
404 | ncell[i] = UA1JETS.ncellj[i]; | |
405 | for (Int_t j = 0; j < nCandidate; j++) { | |
406 | Float_t deta = etaT[j] - fJets->GetEta(i); | |
407 | Float_t dphi = phiT[j] - fJets->GetPhi(i); | |
408 | if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi(); | |
409 | if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi; | |
410 | Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi); | |
411 | if (dr < fHeader->GetRadius() && injet[j] == 0) { | |
412 | injet[j] = -(i+1); | |
413 | if(cFlagT[j] == 1 && | |
414 | (etaT[j] < fHeader->GetLegoEtaMax()) && | |
415 | (etaT[j] > fHeader->GetLegoEtaMin())) { | |
416 | injet[j] = i+1; | |
417 | mult[i]++; | |
418 | pt_sig+=enT[j]; | |
419 | sflag[j]=1; | |
420 | } | |
421 | } | |
422 | if(fDebug>10){ | |
423 | cout << "mult[" << i << "] : " << mult[i] << endl; | |
424 | cout << "ncell[" << i << "] : " << ncell[i] << endl; | |
425 | } | |
426 | } | |
427 | percentage[i] = (pt_sig-ncell[i]*UA1JETS.etavg)/ | |
428 | ((Double_t) fJets->GetPt(i)); | |
429 | } | |
430 | ||
431 | fJets->SetNCells(ncell); | |
432 | fJets->SetPtFromSignal(percentage); | |
433 | fJets->SetMultiplicities(mult); | |
434 | fJets->SetInJet(injet); | |
435 | fJets->SetEtaIn(etaT); | |
436 | if(fDebug>10){ | |
437 | for(Int_t i=0; i<nCandidate ; i++){ | |
438 | cout << "phiT[" << i << "] : " << phiT[i] << endl; | |
439 | cout << "etaT[" << i << "] : " << etaT[i] << endl; | |
440 | } | |
441 | } | |
442 | fJets->SetPhiIn(phiT); | |
443 | fJets->SetPtIn(enT); | |
444 | fJets->SetEtAvg(UA1JETS.etavg); | |
445 | delete etCell; | |
446 | delete etaCell; | |
447 | delete phiCell; | |
448 | delete ncell; | |
449 | delete cFlagT; | |
450 | delete cClusterT; | |
451 | delete enT; | |
452 | delete ptT; | |
453 | delete etaT; | |
454 | delete phiT; | |
455 | delete detaT; | |
456 | delete dphiT; | |
457 | delete injet; | |
458 | delete idx; | |
459 | delete mult; | |
460 | delete percentage; | |
461 | ||
462 | } | |
463 | ||
464 | ||
99e5fe42 | 465 | //////////////////////////////////////////////////////////////////////// |
466 | ||
467 | void AliUA1JetFinder::Reset() | |
99e5fe42 | 468 | { |
469 | fLego->Reset(); | |
470 | fJets->ClearJets(); | |
471 | } | |
472 | ||
473 | //////////////////////////////////////////////////////////////////////// | |
474 | ||
475 | void AliUA1JetFinder::WriteJHeaderToFile() | |
476 | { | |
477 | fOut->cd(); | |
478 | fHeader->Write(); | |
479 | } | |
480 | ||
99e5fe42 | 481 | //////////////////////////////////////////////////////////////////////// |
482 | ||
483 | void AliUA1JetFinder::Init() | |
484 | { | |
485 | // initializes some variables | |
486 | Float_t dEta, dPhi; | |
83a444b1 | 487 | dEta = (fHeader->GetLegoEtaMax()-fHeader->GetLegoEtaMin()) |
488 | /((Float_t) fHeader->GetLegoNbinEta()); | |
489 | dPhi = (fHeader->GetLegoPhiMax()-fHeader->GetLegoPhiMin()) | |
490 | /((Float_t) fHeader->GetLegoNbinPhi()); | |
99e5fe42 | 491 | |
492 | UA1CELL.etaCellSize = dEta; | |
493 | UA1CELL.phiCellSize = dPhi; | |
494 | ||
495 | // jet parameters | |
496 | UA1PARA.coneRad = fHeader->GetRadius(); | |
497 | UA1PARA.etSeed = fHeader->GetEtSeed(); | |
498 | UA1PARA.ejMin = fHeader->GetMinJetEt(); | |
499 | UA1PARA.etMin = fHeader->GetMinCellEt(); | |
500 | ||
501 | // book lego | |
502 | fLego = new | |
503 | TH2F("legoH","eta-phi", | |
83a444b1 | 504 | fHeader->GetLegoNbinEta(), fHeader->GetLegoEtaMin(), |
505 | fHeader->GetLegoEtaMax(), fHeader->GetLegoNbinPhi(), | |
506 | fHeader->GetLegoPhiMin(), fHeader->GetLegoPhiMax()); | |
99e5fe42 | 507 | } |