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1 | /************************************************************************* | |
2 | * Copyright(c) 1998-2009, 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 | // Dielectron MixingHandler // | |
18 | // // | |
19 | // // | |
20 | /* | |
21 | Detailed description | |
22 | ||
23 | ||
24 | */ | |
25 | // // | |
26 | /////////////////////////////////////////////////////////////////////////// | |
27 | ||
28 | #include <TVectorD.h> | |
29 | #include <TH1.h> | |
30 | #include <TAxis.h> | |
31 | ||
32 | #include <AliLog.h> | |
33 | #include <AliVTrack.h> | |
34 | ||
35 | #include "AliDielectron.h" | |
36 | #include "AliDielectronHelper.h" | |
37 | #include "AliDielectronHistos.h" | |
38 | #include "AliDielectronEvent.h" | |
39 | ||
40 | #include "AliDielectronMixingHandler.h" | |
41 | ||
42 | ClassImp(AliDielectronMixingHandler) | |
43 | ||
44 | AliDielectronMixingHandler::AliDielectronMixingHandler() : | |
45 | TNamed(), | |
46 | fDepth(10), | |
47 | fArrPools("TClonesArray"), | |
48 | fAxes(kMaxCuts), | |
49 | fMixType(kOSonly), | |
50 | fMixIncomplete(kTRUE), | |
51 | fMoveToSameVertex(kFALSE), | |
52 | fSkipFirstEvt(kFALSE), | |
53 | fPID(0x0) | |
54 | { | |
55 | // | |
56 | // Default Constructor | |
57 | // | |
58 | for (Int_t i=0; i<kMaxCuts; ++i){ | |
59 | fEventCuts[i]=0; | |
60 | } | |
61 | fAxes.SetOwner(kTRUE); | |
62 | } | |
63 | ||
64 | //______________________________________________ | |
65 | AliDielectronMixingHandler::AliDielectronMixingHandler(const char* name, const char* title) : | |
66 | TNamed(name, title), | |
67 | fDepth(10), | |
68 | fArrPools("TClonesArray"), | |
69 | fAxes(kMaxCuts), | |
70 | fMixType(kOSonly), | |
71 | fMixIncomplete(kTRUE), | |
72 | fMoveToSameVertex(kFALSE), | |
73 | fSkipFirstEvt(kFALSE), | |
74 | fPID(0x0) | |
75 | { | |
76 | // | |
77 | // Named Constructor | |
78 | // | |
79 | for (Int_t i=0; i<kMaxCuts; ++i){ | |
80 | fEventCuts[i]=0; | |
81 | } | |
82 | fAxes.SetOwner(kTRUE); | |
83 | } | |
84 | ||
85 | //______________________________________________ | |
86 | AliDielectronMixingHandler::~AliDielectronMixingHandler() | |
87 | { | |
88 | // | |
89 | // Default Destructor | |
90 | // | |
91 | fAxes.Delete(); | |
92 | delete fPID; | |
93 | } | |
94 | ||
95 | //________________________________________________________________ | |
96 | void AliDielectronMixingHandler::AddVariable(AliDielectronVarManager::ValueTypes type, | |
97 | Int_t nbins, Double_t min, Double_t max, Bool_t log) | |
98 | { | |
99 | // | |
100 | // Add a variable to the mixing handler | |
101 | // | |
102 | ||
103 | // limit number of variables to kMaxCuts | |
104 | if (fAxes.GetEntriesFast()>=kMaxCuts) return; | |
105 | ||
106 | TVectorD *binLimits=0x0; | |
107 | if (!log) binLimits=AliDielectronHelper::MakeLinBinning(nbins,min,max); | |
108 | else binLimits=AliDielectronHelper::MakeLogBinning(nbins,min,max); | |
109 | if (!binLimits) return; | |
110 | ||
111 | Int_t size=fAxes.GetEntriesFast(); | |
112 | fEventCuts[size]=(UShort_t)type; | |
113 | fAxes.Add(binLimits); | |
114 | } | |
115 | ||
116 | //________________________________________________________________ | |
117 | void AliDielectronMixingHandler::AddVariable(AliDielectronVarManager::ValueTypes type, | |
118 | const char* binLimitStr) | |
119 | { | |
120 | // | |
121 | // Add a variable to the mixing handler with arbitrary binning | |
122 | // | |
123 | ||
124 | // limit number of variables to kMaxCuts | |
125 | if (fAxes.GetEntriesFast()>=kMaxCuts) return; | |
126 | ||
127 | TVectorD *binLimits=AliDielectronHelper::MakeArbitraryBinning(binLimitStr); | |
128 | if (!binLimits) return; | |
129 | ||
130 | Int_t size=fAxes.GetEntriesFast(); | |
131 | fEventCuts[size]=(UShort_t)type; | |
132 | fAxes.Add(binLimits); | |
133 | } | |
134 | ||
135 | //______________________________________________ | |
136 | void AliDielectronMixingHandler::Fill(const AliVEvent *ev, AliDielectron *diele) | |
137 | { | |
138 | // | |
139 | // fill event buffers and perform mixing if the pool depth is reached | |
140 | // | |
141 | ||
142 | //check if there are tracks available | |
143 | if (diele->GetTrackArray(0)->GetEntriesFast()==0 && diele->GetTrackArray(1)->GetEntriesFast()==0) return; | |
144 | ||
145 | TString dim; | |
146 | Int_t bin=FindBin(AliDielectronVarManager::GetData(),&dim); | |
147 | ||
148 | //add mixing bin to event data | |
149 | AliDielectronVarManager::SetValue(AliDielectronVarManager::kMixingBin,bin); | |
150 | ||
151 | if (bin<0){ | |
152 | AliDebug(5,Form("Bin outside range: %s",dim.Data())); | |
153 | return; | |
154 | } | |
155 | ||
156 | // get mixing pool, create it if it does not yet exist. | |
157 | TClonesArray *poolp=static_cast<TClonesArray*>(fArrPools.At(bin)); | |
158 | if (!poolp){ | |
159 | AliDebug(10,Form("New pool at %d (%s)\n",bin,dim.Data())); | |
160 | poolp=new(fArrPools[bin]) TClonesArray("AliDielectronEvent",1); | |
161 | } | |
162 | TClonesArray &pool=*poolp; | |
163 | ||
164 | // clear the current pool if its size was reached by last event | |
165 | // clear before fill new event into it | |
166 | // NOTE: clear not directly after DoMixing, because you may want to use the ME | |
167 | // in the internal train by other configs/tasks | |
168 | // reset the event pool size to 1 (this keeps the physical memory consumption low) | |
169 | if(pool.GetEntriesFast()==fDepth) { | |
170 | pool.Clear("C"); | |
171 | pool.ExpandCreate(1); | |
172 | } | |
173 | ||
174 | AliDebug(10,Form("new event at %d: %d",bin,pool.GetEntriesFast())); | |
175 | AliDielectronEvent *event=new(pool[pool.GetEntriesFast()]) AliDielectronEvent(); | |
176 | if(ev->IsA() == AliAODEvent::Class()) event->SetAOD(TMath::Max(diele->GetTrackArray(0)->GetEntriesFast(),diele->GetTrackArray(1)->GetEntriesFast())); | |
177 | else event->SetESD(); | |
178 | ||
179 | event->SetProcessID(fPID); | |
180 | event->SetTracks(*diele->GetTrackArray(0), *diele->GetTrackArray(1), *diele->GetPairArray(1)); | |
181 | event->SetEventData(AliDielectronVarManager::GetData()); | |
182 | ||
183 | // check if pool depth is reached. | |
184 | if (pool.GetEntriesFast()<fDepth) return; | |
185 | ||
186 | // pool depth reached, do mixing | |
187 | DoMixing(pool,diele); | |
188 | ||
189 | // increase counter for full bins | |
190 | if (diele->fHistos) { | |
191 | diele->fHistos->Fill("Mixing","Stats",0); | |
192 | diele->fHistos->Fill("Mixing","CompletePools",bin); | |
193 | } | |
194 | ||
195 | } | |
196 | ||
197 | //______________________________________________ | |
198 | void AliDielectronMixingHandler::DoMixing(TClonesArray &pool, AliDielectron *diele) | |
199 | { | |
200 | // | |
201 | // perform the mixing | |
202 | // | |
203 | ||
204 | //buffer track arrays and copy them back afterwards | |
205 | TObjArray arrTrDummy[4]; | |
206 | for (Int_t i=0; i<4; ++i) arrTrDummy[i]=diele->fTracks[i]; | |
207 | ||
208 | //buffer also global event data | |
209 | Double_t values[AliDielectronVarManager::kNMaxValues]={0}; | |
210 | for (Int_t i=AliDielectronVarManager::kPairMax; i<AliDielectronVarManager::kNMaxValues; ++i) | |
211 | values[i]=AliDielectronVarManager::GetValue((AliDielectronVarManager::ValueTypes)i); | |
212 | ||
213 | ||
214 | // use event data from the first event | |
215 | // all events are in the same mixing bin anyhow... | |
216 | // optionally use only the event data from the first event and no tracks of it, | |
217 | // by this you should get ride of event plane - leg correlations in the mixing | |
218 | // but you loose the 1st event in the mixing statistics | |
219 | AliDielectronEvent *ev0=static_cast<AliDielectronEvent*>(pool.At(0)); | |
220 | AliDielectronVarManager::SetEventData(ev0->GetEventData()); | |
221 | Int_t firstEvt=(fSkipFirstEvt ? 1 : 0); | |
222 | ||
223 | for (Int_t i1=firstEvt; i1<pool.GetEntriesFast(); ++i1){ | |
224 | AliDielectronEvent *ev1=static_cast<AliDielectronEvent*>(pool.At(i1)); | |
225 | //use event data from the first event | |
226 | //both events are in the same mixing bin anyhow... | |
227 | if( !fSkipFirstEvt ) AliDielectronVarManager::SetEventData(ev1->GetEventData()); | |
228 | ||
229 | TObject *o=0x0; | |
230 | TIter ev1P(ev1->GetTrackArrayP()); | |
231 | TIter ev1N(ev1->GetTrackArrayN()); | |
232 | ||
233 | for (Int_t i2=i1+1; i2<pool.GetEntriesFast(); ++i2){ | |
234 | //clear arryas | |
235 | diele->fTracks[0].Clear(); | |
236 | diele->fTracks[1].Clear(); | |
237 | diele->fTracks[2].Clear(); | |
238 | diele->fTracks[3].Clear(); | |
239 | ||
240 | //setup track arrays | |
241 | AliDielectronEvent *ev2=static_cast<AliDielectronEvent*>(pool.At(i2)); | |
242 | ev1P.Reset(); | |
243 | ev1N.Reset(); | |
244 | TIter ev2P(ev2->GetTrackArrayP()); | |
245 | TIter ev2N(ev2->GetTrackArrayN()); | |
246 | ||
247 | // | |
248 | //move tracks to the same vertex (vertex of the first event), if requested | |
249 | // | |
250 | if (fMoveToSameVertex){ | |
251 | const Double_t *varsFirst=ev1->GetEventData(); | |
252 | const Double_t *varsMix=ev2->GetEventData(); | |
253 | ||
254 | const Double_t vFirst[3]={varsFirst[AliDielectronVarManager::kXvPrim], | |
255 | varsFirst[AliDielectronVarManager::kYvPrim], | |
256 | varsFirst[AliDielectronVarManager::kZvPrim]}; | |
257 | ||
258 | const Double_t vMix[3] ={varsMix[AliDielectronVarManager::kXvPrim], | |
259 | varsMix[AliDielectronVarManager::kYvPrim], | |
260 | varsMix[AliDielectronVarManager::kZvPrim]}; | |
261 | ||
262 | //loop over all tracks from the second event and move them to the vertex of the first | |
263 | AliVTrack *vtrack=0x0; | |
264 | while ( ( vtrack=(AliVTrack*)ev2P() ) ){ | |
265 | MoveToSameVertex(vtrack, vFirst, vMix); | |
266 | } | |
267 | ||
268 | ||
269 | while ( ( vtrack=(AliVTrack*)ev2N() ) ){ | |
270 | MoveToSameVertex(vtrack, vFirst, vMix); | |
271 | } | |
272 | ||
273 | ||
274 | ev2P.Reset(); | |
275 | ev2N.Reset(); | |
276 | } | |
277 | ||
278 | //mixing of ev1- ev2+ (pair type4). This is common for all mixing types | |
279 | while ( (o=ev1N()) ) diele->fTracks[1].Add(o); | |
280 | while ( (o=ev2P()) ) diele->fTracks[2].Add(o); | |
281 | diele->FillPairArrays(1,2); | |
282 | ||
283 | if (fMixType==kAll || fMixType==kOSandLS){ | |
284 | // all 4 pair arrays will be filled | |
285 | while ( (o=ev1P()) ) diele->fTracks[0].Add(o); | |
286 | while ( (o=ev2N()) ) diele->fTracks[3].Add(o); | |
287 | diele->FillPairArrays(0,2); | |
288 | diele->FillPairArrays(1,3); | |
289 | if (fMixType==kAll) diele->FillPairArrays(0,3); | |
290 | } | |
291 | ||
292 | if (fMixType==kOSonly || fMixType==kOSandLS){ | |
293 | //use the pair type of ev1- ev1+ also for ev1+ ev1- | |
294 | diele->fTracks[1].Clear(); | |
295 | diele->fTracks[2].Clear(); | |
296 | while ( (o=ev1P()) ) diele->fTracks[1].Add(o); | |
297 | while ( (o=ev2N()) ) diele->fTracks[2].Add(o); | |
298 | diele->FillPairArrays(1,2); | |
299 | } | |
300 | ||
301 | } | |
302 | } | |
303 | ||
304 | //copy back the tracks | |
305 | for (Int_t i=0; i<4; ++i) { | |
306 | diele->fTracks[i].Clear(); | |
307 | diele->fTracks[i]=arrTrDummy[i]; | |
308 | } | |
309 | ||
310 | //set back global event values | |
311 | AliDielectronVarManager::SetEventData(values); | |
312 | } | |
313 | ||
314 | //______________________________________________ | |
315 | Bool_t AliDielectronMixingHandler::MixRemaining(AliDielectron *diele, Int_t ipool) | |
316 | { | |
317 | // | |
318 | // mix all pools even if they are incomplete | |
319 | // | |
320 | ||
321 | //Check if there was any processed data and it is requested to mix incomplete bins | |
322 | if (!diele || !fMixIncomplete ) return 0; | |
323 | ||
324 | AliDielectronVarManager::SetEvent(0x0); | |
325 | TClonesArray *poolp=static_cast<TClonesArray*>(fArrPools.At(ipool)); | |
326 | if (!poolp || !poolp->GetEntriesFast() || !poolp->At(0)) return 0; | |
327 | //clear the arrays before the final processing" | |
328 | AliDebug(10,Form("Incomplete: Bin %d (%d)\n",ipool,poolp->GetEntriesFast())); | |
329 | diele->ClearArrays(); | |
330 | DoMixing(*poolp,diele); | |
331 | ||
332 | // increase counter for incomplete bins | |
333 | if (diele->fHistos) { | |
334 | //buffer event data and set event data using the first event in this pool | |
335 | Double_t values[AliDielectronVarManager::kNMaxValues]={0}; | |
336 | for (Int_t i=AliDielectronVarManager::kPairMax; i<AliDielectronVarManager::kNMaxValues; ++i) | |
337 | values[i]=AliDielectronVarManager::GetValue((AliDielectronVarManager::ValueTypes)i); | |
338 | ||
339 | AliDielectronEvent *ev1=static_cast<AliDielectronEvent*>(poolp->At(0)); | |
340 | //use event data from the first event all events are in the same mixing bin anyhow... | |
341 | AliDielectronVarManager::SetEventData(ev1->GetEventData()); | |
342 | ||
343 | // fill the histograms | |
344 | diele->FillHistograms(0x0, kTRUE); | |
345 | diele->fHistos->Fill("Mixing","Stats",1); | |
346 | diele->fHistos->Fill("Mixing","InCompletePools",ipool); | |
347 | diele->fHistos->Fill("Mixing","Entries_InCompletePools",poolp->GetEntriesFast()); | |
348 | ||
349 | //set back global event values (this would mean set back to zero) | |
350 | //AliDielectronVarManager::SetEventData(values); | |
351 | } | |
352 | return 1; | |
353 | } | |
354 | ||
355 | ||
356 | //______________________________________________ | |
357 | void AliDielectronMixingHandler::Init(const AliDielectron *diele) | |
358 | { | |
359 | // | |
360 | // initialise event buffers | |
361 | // | |
362 | ||
363 | Int_t size=GetNumberOfBins(); | |
364 | ||
365 | AliDebug(10,Form("Creating a pool array with size %d \n",size)); | |
366 | ||
367 | if(diele->DoEventProcess()) fArrPools.Expand(size); | |
368 | ||
369 | //add statics histogram if we have a histogram manager | |
370 | if (diele && diele->fHistos && diele->DoEventProcess()) { | |
371 | diele->fHistos->AddClass("Mixing"); | |
372 | diele->fHistos->UserHistogram("Mixing","Stats","Mixing Statistics;;#called bins",2,0,2); | |
373 | TH1* h=diele->fHistos->GetHistogram("Mixing","Stats"); | |
374 | h->GetXaxis()->SetBinLabel(1,"Complete"); | |
375 | h->GetXaxis()->SetBinLabel(2,"Incomplete"); | |
376 | ||
377 | diele->fHistos->UserHistogram("Mixing","CompletePools","Mixing Statistics compete pools;bin;#fills",size,0,size); | |
378 | diele->fHistos->UserHistogram("Mixing","InCompletePools","Mixing Statistics incomplete pools;bin;#fills",size,0,size); | |
379 | diele->fHistos->UserHistogram("Mixing","Entries_InCompletePools","#entries in incomplete pools;entries;#fills",fDepth,0,fDepth); | |
380 | } | |
381 | ||
382 | TString values; | |
383 | for (Int_t i=0; i<fAxes.GetEntriesFast(); ++i){ | |
384 | TVectorD *bins=static_cast<TVectorD*>(fAxes.At(i)); | |
385 | Int_t nRows=bins->GetNrows(); | |
386 | values+=Form("%s: ",AliDielectronVarManager::GetValueName(fEventCuts[i])); | |
387 | for (Int_t irow=0; irow<nRows; ++irow){ | |
388 | values+=Form("%.2f, ",(*bins)[irow]); | |
389 | } | |
390 | } | |
391 | ||
392 | if (!fPID){ | |
393 | fPID=TProcessID::AddProcessID(); | |
394 | } | |
395 | ||
396 | AliDebug(10,values.Data()); | |
397 | } | |
398 | ||
399 | //______________________________________________ | |
400 | Int_t AliDielectronMixingHandler::GetNumberOfBins() const | |
401 | { | |
402 | // | |
403 | // return the number of bins this mixing handler has | |
404 | // | |
405 | Int_t size=1; | |
406 | for (Int_t i=0; i<fAxes.GetEntriesFast(); ++i) | |
407 | size*=((static_cast<TVectorD*>(fAxes.At(i)))->GetNrows()-1); | |
408 | return size; | |
409 | } | |
410 | ||
411 | //______________________________________________ | |
412 | Int_t AliDielectronMixingHandler::FindBin(const Double_t values[], TString *dim) | |
413 | { | |
414 | // | |
415 | // bin bin in mixing stack described by 'values' | |
416 | // if the values are outside the binning range -1 is returned | |
417 | // if dim is non NULL debug info will be stored in the variable | |
418 | // | |
419 | ||
420 | if (fAxes.GetEntriesFast()==0) { | |
421 | if (dim) (*dim)="single bin"; | |
422 | return 0; | |
423 | } | |
424 | if (dim) (*dim)=""; | |
425 | Int_t sizeAdd=1; | |
426 | Int_t bin=0; | |
427 | for (Int_t i=0; i<fAxes.GetEntriesFast(); ++i){ | |
428 | Double_t val=values[fEventCuts[i]]; | |
429 | TVectorD *bins=static_cast<TVectorD*>(fAxes.At(i)); | |
430 | Int_t nRows=bins->GetNrows(); | |
431 | if ( (val<(*bins)[0]) || (val>(*bins)[nRows-1]) ) { | |
432 | return -1; | |
433 | } | |
434 | ||
435 | Int_t pos=TMath::BinarySearch(nRows,bins->GetMatrixArray(),val); | |
436 | bin+=sizeAdd*pos; | |
437 | if (dim) (*dim)+=Form("%s: %f (%d); ",AliDielectronVarManager::GetValueName(fEventCuts[i]),val,pos); | |
438 | sizeAdd*=(nRows-1); | |
439 | } | |
440 | ||
441 | return bin; | |
442 | } | |
443 | ||
444 | //______________________________________________ | |
445 | void AliDielectronMixingHandler::MoveToSameVertex(AliVTrack * const vtrack, const Double_t *vFirst, const Double_t* vMix) | |
446 | { | |
447 | // | |
448 | // move 'track' which belongs to the vertex information of vMix to the vertex of vFirst | |
449 | // | |
450 | ||
451 | static Bool_t printed=kFALSE; | |
452 | ||
453 | if (vtrack->IsA()==AliESDtrack::Class()){ | |
454 | AliESDtrack *track=(AliESDtrack*)vtrack; | |
455 | ||
456 | //get track information | |
457 | Double_t x = track->GetX(); | |
458 | Double_t alpha = track->GetAlpha(); | |
459 | Double_t param[5] = {0}; | |
460 | Double_t cov[15] = {0}; | |
461 | ||
462 | for (Int_t i=0; i<5; ++i) param[i]=track->GetParameter()[i]; | |
463 | for (Int_t i=0; i<15; ++i) cov[i] =track->GetCovariance()[i]; | |
464 | ||
465 | //translation | |
466 | Double_t vt[3] = {vMix[0]-vFirst[0],vMix[1]-vFirst[1],vMix[2]-vFirst[2]}; | |
467 | //rotate to the track frame | |
468 | // track->Global2LocalPosition(vt,track->GetAlpha()); | |
469 | ||
470 | //add to track position | |
471 | // x = x -vt[0]; | |
472 | // param[0] = param[0]-vt[1]; | |
473 | // param[1] = param[1]-vt[2]; | |
474 | param[1] = param[1]-vt[2]; | |
475 | ||
476 | //set updated track information | |
477 | track->Set(x, alpha, param, cov); | |
478 | } else { | |
479 | // AliAODTrack *track=(AliAODTrack*)vtrack; | |
480 | // Double_t pos[3]={0}; | |
481 | // track->GetPosition(pos); | |
482 | // if (pos[0]>-999.){ | |
483 | // pos[0]=pos[0]-vMix[AliDielectronVarManager::kXvPrim]+vFirst[AliDielectronVarManager::kXvPrim]; | |
484 | // pos[1]=pos[1]-vMix[AliDielectronVarManager::kYvPrim]+vFirst[AliDielectronVarManager::kYvPrim]; | |
485 | // pos[2]=pos[2]-vMix[AliDielectronVarManager::kZvPrim]+vFirst[AliDielectronVarManager::kZvPrim]; | |
486 | // track->SetPosition(pos); | |
487 | // AliError("Move To same vertex not yet implemented for AOD!"); | |
488 | if (!printed) { | |
489 | // Error("AliDielectronMixingHandler::MoveToSameVertex","Move To same vertex not yet implemented for AOD!"); | |
490 | printed=kTRUE; | |
491 | } | |
492 | // | |
493 | // Not that clear how to do it. In AOD track there is fPosition, fPositionAtDCA and "TRef fProdVertex" | |
494 | // where Xv(), Yv(), Zv() returns the position of fProdVertex | |
495 | // | |
496 | } | |
497 | ||
498 | } |