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fe17d4cb | 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 | // Class AliEMCALTracker | |
17 | // ----------------------- | |
18 | // Implementation of the track matching method between barrel tracks and | |
19 | // EMCAL clusters. | |
20 | // Besides algorithm implementation, some cuts are required to be set | |
21 | // in order to define, for each track, an acceptance window where clusters | |
22 | // are searched to find best match (if any). | |
23 | // The class accepts as input an ESD container, and works directly on it, | |
24 | // simply setting, for each of its tracks, the fEMCALindex flag, for each | |
25 | // track which is matched to a cluster. | |
26 | // In order to use method, one must launch PropagateBack(). | |
27 | // | |
28 | // ------------------------------------------------------------------------ | |
29 | // author: A. Pulvirenti (alberto.pulvirenti@ct.infn.it) | |
30 | //========================================================================= | |
31 | ||
32 | #include <Riostream.h> | |
33 | #include <iomanip> | |
34 | ||
35 | #include <TFile.h> | |
36 | #include <TTree.h> | |
fe17d4cb | 37 | #include <TList.h> |
38 | #include <TString.h> | |
39 | #include <TVector3.h> | |
40 | #include <TClonesArray.h> | |
c61f0e70 | 41 | #include <TGeoMatrix.h> |
fe17d4cb | 42 | |
43 | #include "AliLog.h" | |
af885e0f | 44 | #include "AliESDEvent.h" |
fe17d4cb | 45 | #include "AliESDtrack.h" |
89ffc0b0 | 46 | #include "AliESDCaloCluster.h" |
fe17d4cb | 47 | #include "AliEMCALRecPoint.h" |
48 | #include "AliRunLoader.h" | |
49 | #include "AliEMCALTrack.h" | |
50 | #include "AliEMCALLoader.h" | |
c61f0e70 | 51 | #include "AliEMCALGeometry.h" |
8ba062b1 | 52 | #include "AliEMCALReconstructor.h" |
53 | #include "AliEMCALRecParam.h" | |
54 | #include "AliCDBEntry.h" | |
55 | #include "AliCDBManager.h" | |
3e3faf55 | 56 | #include "AliEMCALReconstructor.h" |
c61f0e70 | 57 | |
fe17d4cb | 58 | #include "AliEMCALTracker.h" |
59 | ||
60 | ClassImp(AliEMCALTracker) | |
8ba062b1 | 61 | |
fe17d4cb | 62 | // |
63 | //------------------------------------------------------------------------------ | |
64 | // | |
65 | AliEMCALTracker::AliEMCALTracker() | |
66 | : AliTracker(), | |
67 | fNPropSteps(0), | |
68 | fTrackCorrMode(kTrackCorrNone), | |
69 | fCutX(50.0), | |
70 | fCutY(50.0), | |
71 | fCutZ(50.0), | |
72 | fCutAlphaMin(-200.0), | |
73 | fCutAlphaMax(200.0), | |
74 | fCutAngle(100.0), | |
5a14e691 | 75 | fMaxDist(10.0), |
dcd86c5d | 76 | fCutNITS(3.0), |
77 | fCutNTPC(20.0), | |
fe17d4cb | 78 | fRho(1.0), |
79 | fX0(1.0), | |
80 | fTracks(0), | |
81 | fClusters(0), | |
c61f0e70 | 82 | fMatches(0), |
83 | fGeom(0) | |
fe17d4cb | 84 | { |
85 | // | |
86 | // Default constructor. | |
87 | // Initializes al simple data members to default values, | |
88 | // and all collections to NULL. | |
89 | // Output file name is set to a default value. | |
90 | // | |
0832a2bf | 91 | InitParameters(); |
fe17d4cb | 92 | } |
93 | // | |
94 | //------------------------------------------------------------------------------ | |
95 | // | |
96 | AliEMCALTracker::AliEMCALTracker(const AliEMCALTracker& copy) | |
97 | : AliTracker(), | |
98 | fNPropSteps(copy.fNPropSteps), | |
99 | fTrackCorrMode(copy.fTrackCorrMode), | |
100 | fCutX(copy.fCutX), | |
101 | fCutY(copy.fCutY), | |
102 | fCutZ(copy.fCutZ), | |
103 | fCutAlphaMin(copy.fCutAlphaMin), | |
104 | fCutAlphaMax(copy.fCutAlphaMax), | |
105 | fCutAngle(copy.fCutAngle), | |
106 | fMaxDist(copy.fMaxDist), | |
dcd86c5d | 107 | fCutNITS(copy.fCutNITS), |
108 | fCutNTPC(copy.fCutNTPC), | |
fe17d4cb | 109 | fRho(copy.fRho), |
110 | fX0(copy.fX0), | |
111 | fTracks((TObjArray*)copy.fTracks->Clone()), | |
112 | fClusters((TObjArray*)copy.fClusters->Clone()), | |
c61f0e70 | 113 | fMatches((TList*)copy.fMatches->Clone()), |
114 | fGeom(copy.fGeom) | |
fe17d4cb | 115 | { |
116 | // | |
117 | // Copy constructor | |
118 | // Besides copying all parameters, duplicates all collections. | |
119 | // | |
120 | } | |
121 | // | |
122 | //------------------------------------------------------------------------------ | |
123 | // | |
124 | AliEMCALTracker& AliEMCALTracker::operator=(const AliEMCALTracker& copy) | |
125 | { | |
126 | // | |
127 | // Assignment operator. | |
128 | // Besides copying all parameters, duplicates all collections. | |
129 | // | |
130 | ||
131 | fCutX = copy.fCutX; | |
132 | fCutY = copy.fCutY; | |
133 | fCutZ = copy.fCutZ; | |
134 | fCutAlphaMin = copy.fCutAlphaMin; | |
135 | fCutAlphaMax = copy.fCutAlphaMax; | |
136 | fCutAngle = copy.fCutAngle; | |
137 | fMaxDist = copy.fMaxDist; | |
dcd86c5d | 138 | fCutNITS = copy.fCutNITS; |
139 | fCutNTPC = copy.fCutNTPC; | |
fe17d4cb | 140 | |
141 | fTracks = (TObjArray*)copy.fTracks->Clone(); | |
142 | fClusters = (TObjArray*)copy.fClusters->Clone(); | |
143 | fMatches = (TList*)copy.fMatches->Clone(); | |
144 | ||
c61f0e70 | 145 | fGeom = copy.fGeom; |
146 | ||
fe17d4cb | 147 | return (*this); |
148 | } | |
149 | // | |
150 | //------------------------------------------------------------------------------ | |
151 | // | |
8ba062b1 | 152 | void AliEMCALTracker::InitParameters() |
153 | { | |
154 | // | |
155 | // Retrieve initialization parameters | |
156 | // | |
157 | ||
158 | // Check if the instance of AliEMCALRecParam exists, | |
3e3faf55 | 159 | const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam(); |
3a2a23e1 | 160 | |
ba6de5ea | 161 | if(!recParam){ |
162 | AliFatal("Reconstruction parameters for EMCAL not set!"); | |
8ba062b1 | 163 | } |
41f05b8c | 164 | else{ |
165 | fCutX = recParam->GetTrkCutX(); | |
166 | fCutY = recParam->GetTrkCutY(); | |
167 | fCutZ = recParam->GetTrkCutZ(); | |
168 | fMaxDist = recParam->GetTrkCutR(); | |
169 | fCutAngle = recParam->GetTrkCutAngle(); | |
170 | fCutAlphaMin = recParam->GetTrkCutAlphaMin(); | |
171 | fCutAlphaMax = recParam->GetTrkCutAlphaMax(); | |
172 | fCutNITS = recParam->GetTrkCutNITS(); | |
173 | fCutNTPC = recParam->GetTrkCutNTPC(); | |
174 | } | |
3e3faf55 | 175 | |
8ba062b1 | 176 | } |
177 | // | |
178 | //------------------------------------------------------------------------------ | |
179 | // | |
c61f0e70 | 180 | TTree* AliEMCALTracker::SearchTrueMatches() |
181 | { | |
b9560ae2 | 182 | //Search through the list of |
183 | //track match candidates and clusters | |
184 | //and look for true matches | |
185 | // | |
186 | // | |
c61f0e70 | 187 | if (!fClusters) return 0; |
188 | if (fClusters->IsEmpty()) return 0; | |
189 | if (!fTracks) return 0; | |
190 | if (fTracks->IsEmpty()) return 0; | |
191 | ||
192 | TTree *outTree = new TTree("tree", "True matches from event"); | |
193 | Int_t indexT, indexC, label; | |
194 | outTree->Branch("indexC", &indexC, "indexC/I"); | |
195 | outTree->Branch("indexT", &indexT, "indexT/I"); | |
196 | outTree->Branch("label", &label , "label/I"); | |
197 | ||
53e430a3 | 198 | Double_t dist=0.; |
c61f0e70 | 199 | Int_t ic, nClusters = (Int_t)fClusters->GetEntries(); |
200 | Int_t it, nTracks = fTracks->GetEntries(); | |
201 | ||
202 | for (ic = 0; ic < nClusters; ic++) { | |
203 | AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(ic); | |
204 | label = cluster->Label(); | |
205 | indexC = cluster->Index(); | |
206 | for (it = 0; it < nTracks; it++) { | |
207 | AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(it); | |
208 | if (TMath::Abs(track->GetSeedLabel()) != label) continue; | |
209 | dist = CheckPair(track, cluster); | |
210 | if (dist <= fMaxDist) { | |
211 | indexT = track->GetSeedIndex(); | |
212 | outTree->Fill(); | |
213 | } | |
214 | } | |
215 | } | |
216 | ||
217 | return outTree; | |
218 | } | |
219 | // | |
220 | //------------------------------------------------------------------------------ | |
221 | // | |
fe17d4cb | 222 | void AliEMCALTracker::Clear(Option_t* option) |
223 | { | |
224 | // | |
225 | // Clearing method | |
044225d9 | 226 | // Deletes all objects in arrays and the arrays themselves |
fe17d4cb | 227 | // |
228 | ||
229 | TString opt(option); | |
230 | Bool_t clearTracks = opt.Contains("TRACKS"); | |
231 | Bool_t clearClusters = opt.Contains("CLUSTERS"); | |
232 | Bool_t clearMatches = opt.Contains("MATCHES"); | |
233 | if (opt.Contains("ALL")) { | |
234 | clearTracks = kTRUE; | |
235 | clearClusters = kTRUE; | |
236 | clearMatches = kTRUE; | |
237 | } | |
238 | ||
239 | if (fTracks != 0x0 && clearTracks) { | |
044225d9 | 240 | fTracks->Delete(); |
241 | delete fTracks; | |
242 | fTracks = 0; | |
fe17d4cb | 243 | } |
244 | if (fClusters != 0x0 && clearClusters) { | |
044225d9 | 245 | fClusters->Delete(); |
246 | delete fClusters; | |
247 | fClusters = 0; | |
fe17d4cb | 248 | } |
249 | if (fMatches != 0x0 && clearMatches) { | |
044225d9 | 250 | fMatches->Delete(); |
251 | delete fMatches; | |
252 | fMatches = 0; | |
fe17d4cb | 253 | } |
254 | } | |
255 | // | |
256 | //------------------------------------------------------------------------------ | |
257 | // | |
258 | Int_t AliEMCALTracker::LoadClusters(TTree *cTree) | |
259 | { | |
260 | // | |
261 | // Load EMCAL clusters in the form of AliEMCALRecPoint, | |
262 | // from simulation temporary files. | |
263 | // (When included in reconstruction chain, this method is used automatically) | |
264 | // | |
265 | ||
266 | Clear("CLUSTERS"); | |
267 | ||
bce21ea7 | 268 | cTree->SetBranchStatus("*",0); //disable all branches |
269 | cTree->SetBranchStatus("EMCALECARP",1); //Enable only the branch we need | |
270 | ||
fe17d4cb | 271 | TBranch *branch = cTree->GetBranch("EMCALECARP"); |
272 | if (!branch) { | |
c61f0e70 | 273 | AliError("Can't get the branch with the EMCAL clusters"); |
fe17d4cb | 274 | return 1; |
275 | } | |
276 | ||
9596d957 | 277 | TClonesArray *clusters = new TClonesArray("AliEMCALRecPoint", 1000); |
fe17d4cb | 278 | branch->SetAddress(&clusters); |
fe17d4cb | 279 | |
bce21ea7 | 280 | //cTree->GetEvent(0); |
281 | branch->GetEntry(0); | |
9596d957 | 282 | Int_t nClusters = (Int_t)clusters->GetEntries(); |
bce21ea7 | 283 | if(fClusters) fClusters->Delete(); |
284 | else fClusters = new TObjArray(0); | |
fe17d4cb | 285 | for (Int_t i = 0; i < nClusters; i++) { |
286 | AliEMCALRecPoint *cluster = (AliEMCALRecPoint*)clusters->At(i); | |
287 | if (!cluster) continue; | |
c8fe2783 | 288 | if (cluster->GetClusterType() != AliVCluster::kEMCALClusterv1) continue; |
fe17d4cb | 289 | AliEMCALMatchCluster *matchCluster = new AliEMCALMatchCluster(i, cluster); |
290 | fClusters->AddLast(matchCluster); | |
291 | } | |
3d9e8b15 | 292 | |
2ad4424e | 293 | branch->SetAddress(0); |
294 | clusters->Delete(); | |
295 | delete clusters; | |
3d9e8b15 | 296 | if (fClusters->IsEmpty()) |
9310749e | 297 | AliDebug(1,"No clusters collected"); |
2ad4424e | 298 | |
9310749e | 299 | AliDebug(1,Form("Collected %d clusters (RecPoints)", fClusters->GetEntries())); |
fe17d4cb | 300 | |
301 | return 0; | |
302 | } | |
303 | // | |
304 | //------------------------------------------------------------------------------ | |
305 | // | |
af885e0f | 306 | Int_t AliEMCALTracker::LoadClusters(AliESDEvent *esd) |
fe17d4cb | 307 | { |
308 | // | |
309 | // Load EMCAL clusters in the form of AliESDCaloClusters, | |
310 | // from an AliESD object. | |
311 | // | |
312 | ||
313 | // make sure that tracks/clusters collections are empty | |
314 | Clear("CLUSTERS"); | |
315 | ||
3a2a23e1 | 316 | Int_t start = 0; |
317 | Int_t nClustersEMC = esd->GetNumberOfCaloClusters(); | |
fe17d4cb | 318 | Int_t end = start + nClustersEMC; |
319 | ||
320 | fClusters = new TObjArray(0); | |
321 | ||
322 | Int_t i; | |
323 | for (i = start; i < end; i++) { | |
324 | AliESDCaloCluster *cluster = esd->GetCaloCluster(i); | |
325 | if (!cluster) continue; | |
3a2a23e1 | 326 | if (!cluster->IsEMCAL()) continue ; |
fe17d4cb | 327 | AliEMCALMatchCluster *matchCluster = new AliEMCALMatchCluster(i, cluster); |
328 | fClusters->AddLast(matchCluster); | |
329 | } | |
3d9e8b15 | 330 | if (fClusters->IsEmpty()) |
9310749e | 331 | AliDebug(1,"No clusters collected"); |
fe17d4cb | 332 | |
9310749e | 333 | AliDebug(1,Form("Collected %d clusters from ESD", fClusters->GetEntries())); |
fe17d4cb | 334 | |
335 | return 0; | |
336 | } | |
337 | // | |
338 | //------------------------------------------------------------------------------ | |
339 | // | |
af885e0f | 340 | Int_t AliEMCALTracker::LoadTracks(AliESDEvent *esd) |
fe17d4cb | 341 | { |
342 | // | |
343 | // Load ESD tracks. | |
344 | // | |
345 | ||
346 | Clear("TRACKS"); | |
347 | ||
348 | Int_t nTracks = esd->GetNumberOfTracks(); | |
349 | fTracks = new TObjArray(0); | |
350 | ||
53e430a3 | 351 | Int_t i=0, j=0; |
352 | Bool_t isKink=kFALSE; | |
353 | Double_t alpha=0.; | |
fe17d4cb | 354 | for (i = 0; i < nTracks; i++) { |
355 | AliESDtrack *esdTrack = esd->GetTrack(i); | |
356 | // set by default the value corresponding to "no match" | |
c61f0e70 | 357 | esdTrack->SetEMCALcluster(kUnmatched); |
fe17d4cb | 358 | // if (esdTrack->GetLabel() < 0) continue; |
359 | // if (!(esdTrack->GetStatus() & AliESDtrack::kTOFout)) continue; | |
360 | isKink = kFALSE; | |
361 | for (j = 0; j < 3; j++) { | |
c61f0e70 | 362 | if (esdTrack->GetKinkIndex(j) != 0) isKink = kTRUE; |
fe17d4cb | 363 | } |
364 | if (isKink) continue; | |
365 | AliEMCALTrack *track = new AliEMCALTrack(*esdTrack); | |
c61f0e70 | 366 | track->SetMass(0.13957018); |
fe17d4cb | 367 | // check alpha and reject the tracks which fall outside EMCAL acceptance |
368 | alpha = track->GetAlpha() * TMath::RadToDeg(); | |
369 | if (alpha > -155.0 && alpha < 67.0) { | |
370 | delete track; | |
371 | continue; | |
372 | } | |
c61f0e70 | 373 | // if (!PropagateToEMCAL(track)) { |
374 | // delete track; | |
375 | // continue; | |
376 | // } | |
fe17d4cb | 377 | track->SetSeedIndex(i); |
378 | track->SetSeedLabel(esdTrack->GetLabel()); | |
379 | fTracks->AddLast(track); | |
380 | } | |
381 | if (fTracks->IsEmpty()) { | |
9310749e | 382 | AliDebug(1,"No tracks collected"); |
fe17d4cb | 383 | } |
384 | ||
9310749e | 385 | AliDebug(1,Form("Collected %d tracks", fTracks->GetEntries())); |
fe17d4cb | 386 | |
387 | return 0; | |
388 | } | |
389 | // | |
390 | //------------------------------------------------------------------------------ | |
391 | // | |
af885e0f | 392 | Int_t AliEMCALTracker::PropagateBack(AliESDEvent* esd) |
fe17d4cb | 393 | { |
394 | // | |
395 | // Main operation method. | |
396 | // Gets external AliESD containing tracks to be matched. | |
397 | // After executing match finding, stores in the same ESD object all infos | |
398 | // and releases the object for further reconstruction steps. | |
399 | // | |
3d9e8b15 | 400 | // |
401 | // Note: should always return 0=OK, because otherwise all tracking | |
402 | // is aborted for this event | |
403 | ||
fe17d4cb | 404 | if (!esd) { |
405 | AliError("NULL ESD passed"); | |
406 | return 1; | |
407 | } | |
408 | ||
409 | // step 1: | |
410 | // if cluster array is empty, cluster are collected | |
411 | // from the passed ESD, and work is done with ESDCaloClusters | |
c61f0e70 | 412 | Int_t okLoadClusters, nClusters; |
fe17d4cb | 413 | if (!fClusters || (fClusters && fClusters->IsEmpty())) { |
fe17d4cb | 414 | okLoadClusters = LoadClusters(esd); |
fe17d4cb | 415 | } |
c61f0e70 | 416 | nClusters = fClusters->GetEntries(); |
fe17d4cb | 417 | |
418 | // step 2: | |
419 | // collect ESD tracks | |
c61f0e70 | 420 | Int_t okLoadTracks = LoadTracks(esd), nTracks; |
fe17d4cb | 421 | if (okLoadTracks) return 3; |
c61f0e70 | 422 | nTracks = fTracks->GetEntries(); |
fe17d4cb | 423 | |
424 | // step 3: | |
425 | // each track is propagated to the "R" position of each cluster. | |
426 | // The closest cluster is assigned as match. | |
427 | // IF no clusters lie within the maximum allowed distance, no matches are assigned. | |
428 | Int_t nMatches = CreateMatches(); | |
429 | if (!nMatches) { | |
9310749e | 430 | AliDebug(1,Form("#clusters = %d -- #tracks = %d --> No good matches found.", nClusters, nTracks)); |
3d9e8b15 | 431 | return 0; |
fe17d4cb | 432 | } |
433 | else { | |
9310749e | 434 | AliDebug(1,Form("#clusters = %d -- #tracks = %d --> Found %d matches.", nClusters, nTracks, nMatches)); |
fe17d4cb | 435 | } |
436 | ||
437 | // step 4: | |
438 | // when more than 1 track share the same matched cluster, only the closest one is kept. | |
439 | Int_t nRemoved = SolveCompetitions(); | |
9310749e | 440 | AliDebug(1,Form("Removed %d duplicate matches", nRemoved)); |
fe17d4cb | 441 | if (nRemoved >= nMatches) { |
442 | AliError("Removed ALL matches! Check the algorithm or data. Nothing to save"); | |
443 | return 5; | |
444 | } | |
445 | ||
446 | // step 5: | |
447 | // save obtained information setting the 'fEMCALindex' field of AliESDtrack object | |
33eb9693 | 448 | Int_t nSaved = 0, trackID; |
fe17d4cb | 449 | TListIter iter(fMatches); |
450 | AliEMCALMatch *match = 0; | |
451 | while ( (match = (AliEMCALMatch*)iter.Next()) ) { | |
452 | if (!match->CanBeSaved()) continue; | |
453 | AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(match->GetIndexT()); | |
454 | AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(match->GetIndexC()); | |
455 | trackID = track->GetSeedIndex(); | |
456 | AliESDtrack *esdTrack = esd->GetTrack(trackID); | |
457 | if (!esdTrack) continue; | |
dcd86c5d | 458 | |
459 | // cut on its and tpc track hits | |
460 | if(esdTrack->GetNcls(0)<=fCutNITS)continue; | |
461 | if(esdTrack->GetNcls(1)<=fCutNTPC)continue; | |
33eb9693 | 462 | |
463 | esdTrack->SetEMCALcluster(cluster->Index()); | |
fe17d4cb | 464 | nSaved++; |
465 | } | |
466 | /* | |
467 | AliEMCALTrack *track = 0; | |
468 | TObjArrayIter tracks(fTracks); | |
469 | while ( (track = (AliEMCALTrack*)tracks.Next()) ) { | |
470 | trackID = track->GetSeedIndex(); | |
471 | clusterID = track->GetMatchedClusterIndex(); | |
472 | AliESDtrack *esdTrack = esd->GetTrack(trackID); | |
473 | if (!esdTrack) continue; | |
474 | if (clusterID < 0) { | |
c61f0e70 | 475 | esdTrack->SetEMCALcluster(kUnmatched); |
fe17d4cb | 476 | } |
477 | else { | |
478 | AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(clusterID); | |
479 | if (!cluster) continue; | |
33eb9693 | 480 | |
481 | esdTrack->SetEMCALcluster(cluster->Index()); | |
fe17d4cb | 482 | nSaved++; |
483 | } | |
484 | } | |
485 | */ | |
33eb9693 | 486 | AliDebug(1,Form("Saved %d matches", nSaved)); |
fe17d4cb | 487 | |
488 | return 0; | |
489 | } | |
490 | // | |
491 | //------------------------------------------------------------------------------ | |
492 | // | |
493 | void AliEMCALTracker::SetTrackCorrectionMode(Option_t *option) | |
494 | { | |
495 | // | |
496 | // Set track correction mode | |
497 | // gest the choice in string format and converts into | |
498 | // internal enum | |
499 | // | |
500 | ||
501 | TString opt(option); | |
502 | opt.ToUpper(); | |
503 | ||
504 | if (!opt.CompareTo("NONE")) { | |
505 | fTrackCorrMode = kTrackCorrNone; | |
506 | } | |
507 | else if (!opt.CompareTo("MMB")) { | |
508 | fTrackCorrMode = kTrackCorrMMB; | |
509 | } | |
510 | else if (!opt.CompareTo("FIXED")) { | |
511 | fTrackCorrMode = kTrackCorrFixed; | |
512 | } | |
513 | else { | |
514 | cerr << "E-AliEMCALTracker::SetTrackCorrectionMode '" << option << "': Unrecognized option" << endl; | |
515 | } | |
516 | } | |
517 | ||
518 | // | |
519 | //------------------------------------------------------------------------------ | |
520 | // | |
521 | Double_t AliEMCALTracker::AngleDiff(Double_t angle1, Double_t angle2) | |
522 | { | |
523 | // | |
524 | // [PRIVATE] | |
525 | // Given two angles in radiants, it converts them in the range 0-2pi | |
526 | // then computes their true difference, i.e. if the difference a1-a2 | |
527 | // results to be larger than 180 degrees, it returns 360 - diff. | |
528 | // | |
529 | ||
530 | if (angle1 < 0.0) angle1 += TMath::TwoPi(); | |
531 | if (angle1 > TMath::TwoPi()) angle1 -= TMath::TwoPi(); | |
532 | if (angle2 < 0.0) angle2 += TMath::TwoPi(); | |
533 | if (angle2 > TMath::TwoPi()) angle2 -= TMath::TwoPi(); | |
534 | ||
535 | Double_t diff = TMath::Abs(angle1 - angle2); | |
536 | if (diff > TMath::Pi()) diff = TMath::TwoPi() - diff; | |
537 | ||
538 | if (angle2 > angle1) diff = -diff; | |
539 | ||
540 | return diff; | |
541 | } | |
542 | // | |
543 | //------------------------------------------------------------------------------ | |
544 | // | |
545 | Double_t AliEMCALTracker::CheckPair | |
546 | (AliEMCALTrack *track, AliEMCALMatchCluster *cl) | |
547 | { | |
548 | // | |
549 | // Given a track and a cluster, | |
550 | // propagates the first to the radius of the second. | |
551 | // Then, checks the propagation point against all cuts. | |
552 | // If at least a cut is not passed, a valuer equal to | |
553 | // twice the maximum allowed distance is passed (so the value returned | |
554 | // will not be taken into account when creating matches) | |
555 | // | |
556 | ||
557 | // TEMP | |
41f05b8c | 558 | //Bool_t isTrue = kFALSE; |
fe17d4cb | 559 | // if (tr->GetSeedLabel() == cl->Label()) { |
560 | // isTrue = kTRUE; | |
fe17d4cb | 561 | // } |
562 | ||
563 | // copy track into temporary variable | |
564 | AliEMCALTrack *tr = new AliEMCALTrack(*track); | |
565 | ||
566 | Double_t distance = 2.0 * fMaxDist; | |
567 | ||
568 | // check against cut on difference 'alpha - phi' | |
569 | Double_t phi = TMath::ATan2(cl->Y(), cl->X()); | |
570 | phi = AngleDiff(phi, tr->GetAlpha()); | |
5a14e691 | 571 | if (phi < fCutAlphaMin || phi > fCutAlphaMax){ |
572 | delete tr; | |
573 | return distance; | |
574 | } | |
fe17d4cb | 575 | |
576 | // try to propagate to cluster radius | |
577 | // (return the 'distance' value if it fails) | |
578 | Double_t pos[3], &x = pos[0], &y = pos[1], &z = pos[2]; | |
579 | Double_t x0, rho; | |
580 | tr->GetXYZ(pos); | |
581 | Double_t rt = TMath::Sqrt(x*x + y*y); | |
582 | Double_t rc = TMath::Sqrt(cl->X()*cl->X() + cl->Y()*cl->Y()); | |
583 | ||
584 | if (fTrackCorrMode == kTrackCorrMMB) { | |
585 | Double_t pos1[3], pos2[3], param[6]; | |
586 | pos1[0] = x; | |
587 | pos1[1] = y; | |
588 | pos1[2] = z; | |
589 | pos2[0] = cl->X(); | |
590 | pos2[1] = cl->Y(); | |
591 | pos2[2] = cl->Z(); | |
c3c15772 | 592 | MeanMaterialBudget(pos1, pos2, param); |
593 | rho = param[0]*param[4]; | |
fe17d4cb | 594 | x0 = param[1]; |
595 | } | |
596 | else if (fTrackCorrMode == kTrackCorrFixed) { | |
597 | rho = fRho; | |
598 | x0 = fX0; | |
599 | } | |
600 | else { | |
601 | rho = 0.0; | |
602 | x0 = 0.0; | |
603 | } | |
604 | if (fNPropSteps) { | |
53e430a3 | 605 | Int_t i=0; |
606 | Double_t r=0.; | |
fe17d4cb | 607 | cout.setf(ios::fixed); |
608 | cout.precision(5); | |
41f05b8c | 609 | //if (isTrue) cout << "Init : " << rt << ' ' << x << ' ' << y << ' ' << z << endl; |
fe17d4cb | 610 | for (i = 0; i < fNPropSteps; i++) { |
611 | r = rt + (rc - rt) * ((Double_t)(i+1)/(Double_t)fNPropSteps); | |
5a14e691 | 612 | if (!tr->PropagateTo(r, x0, rho)){ |
613 | delete tr; | |
614 | return distance; | |
615 | } | |
fe17d4cb | 616 | tr->GetXYZ(pos); |
41f05b8c | 617 | // if (isTrue) cout << "Step : " << r << ' ' << x << ' ' << y << ' ' << z << endl; |
fe17d4cb | 618 | } |
41f05b8c | 619 | //if (isTrue) cout << "Clstr: " << rc << ' ' << cl->X() << ' ' << cl->Y() << ' ' << cl->Z() << endl; |
fe17d4cb | 620 | } |
621 | else { | |
622 | // when no steps are used, no correction makes sense | |
c61f0e70 | 623 | //if (!tr->PropagateTo(rc, 0.0, 0.0)) return distance; |
5a14e691 | 624 | if (!tr->PropagateToGlobal(cl->X(), cl->Y(), cl->Z(), 0.0, 0.0)){ |
625 | delete tr; | |
626 | return distance; | |
627 | } | |
c61f0e70 | 628 | /* |
629 | Bool_t propOK = kFALSE; | |
630 | cout << "START" << endl; | |
631 | Double_t dist, rCHK, bestDist = 10000000.0; | |
632 | for (Double_t rTMP = rc; rTMP> rc*0.95; rTMP -= 0.1) { | |
633 | if (!tr->PropagateTo(rTMP)) continue; | |
634 | propOK = kTRUE; | |
635 | tr->GetXYZ(pos); | |
636 | rCHK = TMath::Sqrt(x*x + y*y); | |
637 | dist = TMath::Abs(rCHK - rc); | |
638 | cout << rCHK << " vs. " << rc << endl; | |
639 | ||
640 | if (TMath::Abs(rCHK - rc) < 0.01) break; | |
641 | } | |
642 | cout << "STOP" << endl; | |
643 | if (!propOK) return distance; | |
644 | */ | |
fe17d4cb | 645 | } |
646 | ||
647 | // get global propagation of track at end of propagation | |
648 | tr->GetXYZ(pos); | |
649 | ||
650 | // check angle cut | |
651 | TVector3 vc(cl->X(), cl->Y(), cl->Z()); | |
652 | TVector3 vt(x, y, z); | |
653 | Double_t angle = TMath::Abs(vc.Angle(vt)) * TMath::RadToDeg(); | |
c61f0e70 | 654 | // check: where is the track? |
53e430a3 | 655 | // Double_t r = TMath::Sqrt(pos[0]*pos[0] + pos[1]*pos[1]); |
656 | // Double_t phiT = TMath::ATan2(pos[1], pos[0]) * TMath::RadToDeg(); | |
657 | // Double_t phiC = vc.Phi() * TMath::RadToDeg(); | |
c61f0e70 | 658 | //cout << "Propagated R, phiT, phiC = " << r << ' ' << phiT << ' ' << phiC << endl; |
659 | ||
fe17d4cb | 660 | if (angle > fCutAngle) { |
661 | //cout << "angle" << endl; | |
5a14e691 | 662 | delete tr; |
fe17d4cb | 663 | return distance; |
664 | } | |
665 | ||
666 | // compute differences wr to each coordinate | |
667 | x -= cl->X(); | |
c61f0e70 | 668 | if (TMath::Abs(x) > fCutX) { |
fe17d4cb | 669 | //cout << "cut X" << endl; |
5a14e691 | 670 | delete tr; |
fe17d4cb | 671 | return distance; |
672 | } | |
673 | y -= cl->Y(); | |
c61f0e70 | 674 | if (TMath::Abs(y) > fCutY) { |
fe17d4cb | 675 | //cout << "cut Y" << endl; |
5a14e691 | 676 | delete tr; |
fe17d4cb | 677 | return distance; |
678 | } | |
679 | z -= cl->Z(); | |
c61f0e70 | 680 | if (TMath::Abs(z) > fCutZ) { |
fe17d4cb | 681 | //cout << "cut Z" << endl; |
5a14e691 | 682 | delete tr; |
fe17d4cb | 683 | return distance; |
684 | } | |
685 | ||
686 | // compute true distance | |
687 | distance = TMath::Sqrt(x*x + y*y + z*z); | |
688 | //Double_t temp = CheckPairV2(tr, cl); | |
689 | //if (temp < distance) return temp; else | |
690 | ||
691 | // delete temporary object | |
692 | delete tr; | |
693 | ||
694 | return distance; | |
695 | } | |
696 | // | |
697 | //------------------------------------------------------------------------------ | |
698 | // | |
699 | Double_t AliEMCALTracker::CheckPairV2 | |
700 | (AliEMCALTrack *tr, AliEMCALMatchCluster *cl) | |
701 | { | |
702 | // | |
703 | // Given a track and a cluster, | |
704 | // propagates the first to the radius of the second. | |
705 | // Then, checks the propagation point against all cuts. | |
706 | // If at least a cut is not passed, a valuer equal to | |
707 | // twice the maximum allowed distance is passed (so the value returned | |
708 | // will not be taken into account when creating matches) | |
709 | // | |
710 | ||
711 | // TEMP | |
712 | // Bool_t isTrue = kFALSE; | |
713 | // if (tr->GetSeedLabel() == cl->Label()) { | |
714 | // isTrue = kTRUE; | |
715 | // cout << "TRUE MATCH!!!" << endl; | |
716 | // } | |
717 | ||
718 | Double_t distance = 2.0 * fMaxDist; | |
719 | ||
53e430a3 | 720 | Double_t x0=0., rho=0.; |
fe17d4cb | 721 | if (fTrackCorrMode == kTrackCorrMMB) { |
722 | Double_t pos1[3], pos2[3], param[6]; | |
723 | tr->GetXYZ(pos1); | |
724 | // pos1[0] = x; | |
725 | // pos1[1] = y; | |
726 | // pos1[2] = z; | |
727 | pos2[0] = cl->X(); | |
728 | pos2[1] = cl->Y(); | |
729 | pos2[2] = cl->Z(); | |
c3c15772 | 730 | MeanMaterialBudget(pos1, pos2, param); |
731 | rho = param[0]*param[4]; | |
fe17d4cb | 732 | x0 = param[1]; |
733 | } | |
734 | else if (fTrackCorrMode == kTrackCorrFixed) { | |
735 | rho = fRho; | |
736 | x0 = fX0; | |
737 | } | |
738 | else { | |
739 | rho = 0.0; | |
740 | x0 = 0.0; | |
741 | } | |
742 | ||
743 | // check against cut on difference 'alpha - phi' | |
744 | Double_t phi = TMath::ATan2(cl->Y(), cl->X()); | |
745 | phi = AngleDiff(phi, tr->GetAlpha()); | |
746 | if (phi < fCutAlphaMin || phi > fCutAlphaMax) return distance; | |
747 | ||
748 | // get cluster position and put them into a vector | |
749 | TVector3 vc(cl->X(), cl->Y(), cl->Z()); | |
750 | // rotate the vector in order to put all clusters on a plane intersecting | |
751 | // vertically the X axis; the angle depends on the sector | |
53e430a3 | 752 | Double_t clusterRot=0., clusterPhi = vc.Phi() * TMath::RadToDeg(); |
fe17d4cb | 753 | if (clusterPhi < 0.0) clusterPhi += 360.0; |
754 | if (clusterPhi < 100.0) { | |
755 | clusterRot = -90.0; | |
756 | } | |
757 | else if (clusterPhi < 120.0) { | |
758 | clusterRot = -110.0; | |
759 | } | |
760 | else if (clusterPhi < 140.0) { | |
761 | clusterRot = -130.0; | |
762 | } | |
763 | else if (clusterPhi < 160.0) { | |
764 | clusterRot = -150.0; | |
765 | } | |
766 | else if (clusterPhi < 180.0) { | |
767 | clusterRot = -170.0; | |
768 | } | |
769 | else { | |
770 | clusterRot = -190.0; | |
771 | } | |
772 | vc.RotateZ(clusterRot * TMath::DegToRad()); | |
773 | // generate a track from the ESD track selected | |
774 | AliEMCALTrack *track = new AliEMCALTrack(*tr); | |
775 | // compute the 'phi' coordinate of the intersection point to | |
776 | // the EMCAL surface | |
777 | Double_t x = vc.X(); | |
53e430a3 | 778 | Double_t y = 0.; |
fe17d4cb | 779 | track->GetYAt(vc.X(), track->GetBz(), y); |
780 | Double_t tmp = x*TMath::Cos(track->GetAlpha()) - y*TMath::Sin(track->GetAlpha()); | |
781 | y = x*TMath::Sin(track->GetAlpha()) + y*TMath::Cos(track->GetAlpha()); | |
782 | x = tmp; | |
783 | Double_t trackPhi = TMath::ATan2(y, x) * TMath::RadToDeg(); | |
784 | // compute phi difference | |
785 | Double_t dphi = trackPhi - clusterPhi; | |
786 | if (TMath::Abs(dphi) > 180.0) { | |
787 | dphi = 360.0 - TMath::Abs(dphi); | |
788 | if (clusterPhi > trackPhi) dphi = -dphi; | |
789 | } | |
790 | // propagate track to the X position of rotated cluster | |
791 | // and get the vector of X, Y, Z in the local ref. frame of the track | |
792 | track->PropagateTo(vc.X(), x0, rho); | |
793 | TVector3 vt(track->GetX(), track->GetY(), track->GetZ()); | |
794 | vt.RotateZ((clusterPhi - trackPhi) * TMath::DegToRad()); | |
795 | TVector3 vdiff = vt-vc; | |
796 | ||
797 | // compute differences wr to each coordinate | |
5a14e691 | 798 | delete track; |
fe17d4cb | 799 | if (vdiff.X() > fCutX) return distance; |
800 | if (vdiff.Y() > fCutY) return distance; | |
801 | if (vdiff.Z() > fCutZ) return distance; | |
802 | ||
803 | // compute true distance | |
804 | distance = vdiff.Mag(); | |
805 | return distance; | |
806 | } | |
807 | // | |
808 | //------------------------------------------------------------------------------ | |
809 | // | |
c61f0e70 | 810 | Double_t AliEMCALTracker::CheckPairV3 |
811 | (AliEMCALTrack *track, AliEMCALMatchCluster *cl) | |
812 | { | |
813 | // | |
814 | // Given a track and a cluster, | |
815 | // propagates the first to the radius of the second. | |
816 | // Then, checks the propagation point against all cuts. | |
817 | // If at least a cut is not passed, a valuer equal to | |
818 | // twice the maximum allowed distance is passed (so the value returned | |
819 | // will not be taken into account when creating matches) | |
820 | // | |
821 | ||
822 | AliEMCALTrack tr(*track); | |
823 | ||
53e430a3 | 824 | Int_t sector=-1; |
c61f0e70 | 825 | Double_t distance = 2.0 * fMaxDist; |
53e430a3 | 826 | Double_t dx=0., dy=0., dz=0.; |
827 | Double_t phi=0., alpha=0., slope=0., tgtXnum=0., tgtXden=0., sectorWidth = 20.0 * TMath::DegToRad(); | |
828 | Double_t xcurr=0., xprop=0., param[6] = {0., 0., 0., 0., 0., 0.}, x0=0., rho=0., bz=0.; | |
829 | Double_t x[3]= {0., 0., 0.}, x1[3]= {0., 0., 0.}, x2[3]= {0., 0., 0.}; | |
c61f0e70 | 830 | |
831 | // get initial track position | |
832 | xcurr = tr.GetX(); | |
833 | ||
834 | // evaluate the EMCAL sector number | |
835 | phi = cl->Phi(); | |
836 | if (phi < 0.0) phi += TMath::TwoPi(); | |
837 | sector = (Int_t)(phi / sectorWidth); | |
838 | alpha = ((Double_t)sector + 0.5) * sectorWidth; | |
839 | // evaluate the corresponding X for track propagation | |
840 | slope = TMath::Tan(alpha - 0.5*TMath::Pi()); | |
841 | tgtXnum = cl->Y() - slope * cl->X(); | |
842 | tgtXden = TMath::Sqrt(1.0 + slope*slope); | |
843 | xprop = TMath::Abs(tgtXnum / tgtXden); | |
844 | ||
845 | // propagate by small steps | |
846 | tr.GetXYZ(x1); | |
847 | bz = tr.GetBz(); | |
848 | if (!tr.GetXYZAt(xprop, bz, x2)) return distance; | |
849 | //AliKalmanTrack::MeanMaterialBudget(x1, x2, param); | |
e77c61fe | 850 | rho = param[0]*param[4]; |
53e430a3 | 851 | x0 = param[1]; |
e77c61fe | 852 | if (!tr.PropagateTo(xprop, x0, rho)) return distance; |
c61f0e70 | 853 | //if (!tr.PropagateTo(xprop, 0.0, 0.0)) return distance; |
854 | ||
855 | // get propagated position at the end | |
856 | tr.GetXYZ(x); | |
857 | dx = TMath::Abs(x[0] - cl->X()); | |
858 | dy = TMath::Abs(x[1] - cl->Y()); | |
859 | dz = TMath::Abs(x[2] - cl->Z()); | |
860 | if (dx > fCutX || dy > fCutY || dz > fCutZ) return distance; | |
861 | ||
862 | distance = TMath::Sqrt(dx*dx + dy*dy + dz*dz); | |
863 | ||
864 | return distance; | |
865 | } | |
866 | // | |
867 | //------------------------------------------------------------------------------ | |
868 | // | |
869 | Bool_t AliEMCALTracker::PropagateToEMCAL(AliEMCALTrack *tr) | |
870 | { | |
871 | // | |
872 | // Propagates the track to the proximity of the EMCAL surface | |
873 | // | |
874 | ||
53e430a3 | 875 | Double_t xcurr=0., xtemp=0., xprop = 438.0, step = 10.0, param[6]= {0., 0., 0., 0., 0., 0.}, x0=0., rho=0., bz=0.; |
876 | Double_t x1[3]= {0., 0., 0.}, x2[3]= {0., 0., 0.}; | |
c61f0e70 | 877 | |
878 | // get initial track position | |
879 | xcurr = tr->GetX(); | |
880 | ||
881 | // propagate by small steps | |
882 | for (xtemp = xcurr + step; xtemp < xprop; xtemp += step) { | |
883 | // to compute material budget, take current position and | |
884 | // propagated hypothesis without energy loss | |
885 | tr->GetXYZ(x1); | |
886 | bz = tr->GetBz(); | |
887 | if (!tr->GetXYZAt(xtemp, bz, x2)) return kFALSE; | |
c3c15772 | 888 | MeanMaterialBudget(x1, x2, param); |
889 | rho = param[0]*param[4]; | |
c61f0e70 | 890 | x0 = param[1]; |
e77c61fe | 891 | if (!tr->PropagateTo(xtemp, x0, rho)) return kFALSE; |
c61f0e70 | 892 | } |
893 | ||
894 | return kTRUE; | |
895 | } | |
896 | // | |
897 | //------------------------------------------------------------------------------ | |
898 | // | |
fe17d4cb | 899 | Int_t AliEMCALTracker::CreateMatches() |
900 | { | |
901 | // | |
902 | // Creation of matches between tracks and clusters. | |
903 | // For each ESD track collected by ReadESD(), an AliEMCALTrack is made. | |
904 | // If it finds a cluster close enough to its propagation to EMCAL, | |
905 | // which passes all cuts, its index is stored. | |
906 | // If many clusters are found which satisfy the criteria described above, | |
907 | // only the closest one is stored. | |
908 | // At this level, it is possible that two tracks share the same cluster. | |
909 | // | |
910 | ||
911 | // if matches collection is already present, it is deleted | |
912 | if (fMatches) { | |
913 | fMatches->Delete(); | |
914 | delete fMatches; | |
915 | } | |
916 | fMatches = new TList; | |
917 | ||
918 | // initialize counters and indexes | |
919 | Int_t count = 0; | |
53e430a3 | 920 | Int_t ic=0, nClusters = (Int_t)fClusters->GetEntries(); |
921 | Int_t it=0, nTracks = fTracks->GetEntries(); | |
fe17d4cb | 922 | |
923 | // external loop on clusters, internal loop on tracks | |
53e430a3 | 924 | Double_t dist=0.; |
fe17d4cb | 925 | for (ic = 0; ic < nClusters; ic++) { |
fe17d4cb | 926 | AliEMCALMatchCluster *cluster = (AliEMCALMatchCluster*)fClusters->At(ic); |
927 | for (it = 0; it < nTracks; it++) { | |
928 | AliEMCALTrack *track = (AliEMCALTrack*)fTracks->At(it); | |
929 | dist = CheckPair(track, cluster); | |
c61f0e70 | 930 | //cout << dist << endl; |
fe17d4cb | 931 | if (dist <= fMaxDist) { |
932 | AliEMCALMatch *candidate = new AliEMCALMatch; | |
933 | candidate->SetIndexT(it); | |
934 | candidate->SetIndexC(ic); | |
935 | candidate->SetDistance(dist); | |
6c23ffed | 936 | candidate->SetPt(track->GetSignedPt()); |
fe17d4cb | 937 | fMatches->Add(candidate); |
938 | count++; | |
939 | } | |
940 | } | |
941 | } | |
fe17d4cb | 942 | |
943 | return count; | |
944 | } | |
945 | // | |
946 | //------------------------------------------------------------------------------ | |
947 | // | |
948 | Int_t AliEMCALTracker::SolveCompetitions() | |
949 | { | |
950 | // | |
951 | // Match selector. | |
952 | // The match list is sorted from the best to the worst match, w.r. to the | |
953 | // distance between track prolongation and cluster position. | |
954 | // Based on this criterion, starting from the first (best) match, a flag | |
955 | // is set to both the involved track and cluster, and all matches containing | |
956 | // an already used track or cluster are removed, leaving only the best match | |
957 | // for each cluster. | |
958 | // | |
959 | ||
960 | // sort matches with respect to track-cluster distance | |
961 | fMatches->Sort(kSortAscending); | |
962 | ||
963 | // keep track of eliminated matches | |
964 | Int_t count = 0; | |
965 | ||
966 | // initialize flags to check repetitions | |
53e430a3 | 967 | Int_t ic=0, nClusters = (Int_t)fClusters->GetEntries(); |
968 | Int_t it=0, nTracks = fTracks->GetEntries(); | |
fe17d4cb | 969 | Bool_t *usedC = new Bool_t[nClusters]; |
970 | Bool_t *usedT = new Bool_t[nTracks]; | |
971 | for (ic = 0; ic < nClusters; ic++) usedC[ic] = kFALSE; | |
972 | for (it = 0; it < nTracks; it++) usedT[it] = kFALSE; | |
973 | ||
974 | // loop on matches | |
975 | TListIter iter(fMatches); | |
976 | AliEMCALMatch *match = 0; | |
977 | while ( (match = (AliEMCALMatch*)iter.Next()) ) { | |
978 | ic = match->GetIndexC(); | |
979 | it = match->GetIndexT(); | |
980 | if (!usedT[it] && !usedC[ic]) { | |
981 | usedT[it] = kTRUE; | |
982 | usedC[ic] = kTRUE; | |
983 | match->CanBeSaved() = kTRUE; | |
984 | } | |
985 | else { | |
986 | count++; | |
987 | } | |
988 | } | |
989 | ||
17773e2e | 990 | delete [] usedC; |
991 | delete [] usedT; | |
992 | ||
fe17d4cb | 993 | return count; |
994 | } | |
995 | // | |
996 | //------------------------------------------------------------------------------ | |
997 | // | |
998 | void AliEMCALTracker::UnloadClusters() | |
999 | { | |
1000 | // | |
044225d9 | 1001 | // Free memory from all arrays |
1002 | // This method is called after the local tracking step | |
1003 | // so we can safely delete everything | |
fe17d4cb | 1004 | // |
1005 | ||
044225d9 | 1006 | Clear(); |
fe17d4cb | 1007 | } |
04475328 | 1008 | // |
1009 | //------------------------------------------------------------------------------ | |
1010 | // | |
1011 | TVector3 AliEMCALTracker::FindExtrapolationPoint(Double_t x,Double_t y,Double_t z, AliESDtrack *track) | |
1012 | { | |
1013 | //Method to determine extrapolation point of track at location x,y,z | |
1014 | AliEMCALTrack *tr = new AliEMCALTrack(*track); | |
1015 | TVector3 error(-100.,-100.,-100.); | |
1016 | if (!tr->PropagateToGlobal(x,y,z, 0.0, 0.0)) { | |
1017 | return error; | |
1018 | } | |
53e430a3 | 1019 | Double_t pos[3]= {0., 0., 0.}; |
04475328 | 1020 | tr->GetXYZ(pos); |
1021 | TVector3 ExTrPos(pos[0],pos[1],pos[2]); | |
1022 | return ExTrPos; | |
1023 | } | |
1024 | ||
fe17d4cb | 1025 | // |
1026 | //------------------------------------------------------------------------------ | |
1027 | // | |
1028 | AliEMCALTracker::AliEMCALMatchCluster::AliEMCALMatchCluster(Int_t index, AliEMCALRecPoint *recPoint) | |
1029 | : fIndex(index), | |
0f7fcbef | 1030 | fLabel(recPoint->GetPrimaryIndex()), //wrong! fixed below |
fe17d4cb | 1031 | fX(0.), |
1032 | fY(0.), | |
1033 | fZ(0.) | |
1034 | { | |
1035 | // | |
1036 | // Translates an AliEMCALRecPoint object into the internal format. | |
1037 | // Index of passed cluster in its native array must be specified. | |
1038 | // | |
1039 | TVector3 clpos; | |
1040 | recPoint->GetGlobalPosition(clpos); | |
1041 | ||
1042 | fX = clpos.X(); | |
1043 | fY = clpos.Y(); | |
1044 | fZ = clpos.Z(); | |
0f7fcbef | 1045 | |
1046 | //AliEMCALRecPoint stores the track labels in the parents | |
1047 | //list, sorted according to the fractional contribution to the | |
1048 | //RecPoint. The zeroth parent gave the highest contribution | |
1049 | Int_t multparent = 0; | |
1050 | Int_t *parents = recPoint->GetParents(multparent); | |
1051 | if(multparent > 0) | |
1052 | fLabel = parents[0]; | |
1053 | else | |
1054 | fLabel = -1; | |
1055 | ||
fe17d4cb | 1056 | } |
1057 | // | |
1058 | //------------------------------------------------------------------------------ | |
1059 | // | |
1060 | AliEMCALTracker::AliEMCALMatchCluster::AliEMCALMatchCluster(Int_t index, AliESDCaloCluster *caloCluster) | |
1061 | : fIndex(index), | |
7592dfc4 | 1062 | fLabel(caloCluster->GetLabel()), |
fe17d4cb | 1063 | fX(0.), |
1064 | fY(0.), | |
1065 | fZ(0.) | |
1066 | { | |
1067 | // | |
1068 | // Translates an AliESDCaloCluster object into the internal format. | |
1069 | // Index of passed cluster in its native array must be specified. | |
1070 | // | |
53e430a3 | 1071 | Float_t clpos[3]= {0., 0., 0.}; |
7592dfc4 | 1072 | caloCluster->GetPosition(clpos); |
fe17d4cb | 1073 | |
1074 | fX = (Double_t)clpos[0]; | |
1075 | fY = (Double_t)clpos[1]; | |
1076 | fZ = (Double_t)clpos[2]; | |
1077 | } | |
1078 | // | |
1079 | //------------------------------------------------------------------------------ | |
1080 | // | |
1081 | Int_t AliEMCALTracker::AliEMCALMatch::Compare(const TObject *obj) const | |
1082 | { | |
1083 | // | |
1084 | // Tracks compared wrt their distance from matched point | |
1085 | // | |
1086 | ||
1087 | AliEMCALTracker::AliEMCALMatch *that = (AliEMCALTracker::AliEMCALMatch*)obj; | |
1088 | ||
c61f0e70 | 1089 | Double_t thisDist = fPt;//fDistance; |
1090 | Double_t thatDist = that->fPt;//that->GetDistance(); | |
fe17d4cb | 1091 | |
1092 | if (thisDist > thatDist) return 1; | |
1093 | else if (thisDist < thatDist) return -1; | |
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | AliEMCALTracker::AliEMCALMatch::AliEMCALMatch() | |
1098 | : TObject(), | |
1099 | fCanBeSaved(kFALSE), | |
1100 | fIndexC(0), | |
1101 | fIndexT(0), | |
c61f0e70 | 1102 | fDistance(0.), |
1103 | fPt(0.) | |
fe17d4cb | 1104 | { |
1105 | //default constructor | |
1106 | ||
1107 | } | |
1108 | ||
1109 | AliEMCALTracker::AliEMCALMatch::AliEMCALMatch(const AliEMCALMatch& copy) | |
1110 | : TObject(), | |
1111 | fCanBeSaved(copy.fCanBeSaved), | |
1112 | fIndexC(copy.fIndexC), | |
1113 | fIndexT(copy.fIndexT), | |
c61f0e70 | 1114 | fDistance(copy.fDistance), |
1115 | fPt(copy.fPt) | |
fe17d4cb | 1116 | { |
1117 | //copy ctor | |
1118 | } |