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596a855f | 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 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // class for running the reconstruction // | |
21 | // // | |
22 | // Clusters and tracks are created for all detectors and all events by // | |
23 | // typing: // | |
24 | // // | |
25 | // AliReconstruction rec; // | |
26 | // rec.Run(); // | |
27 | // // | |
28 | // The Run method returns kTRUE in case of successful execution. // | |
29 | // The name of the galice file can be changed from the default // | |
30 | // "galice.root" by // | |
31 | // // | |
32 | // rec.SetGAliceFile("..."); // | |
33 | // // | |
34 | // The reconstruction can be switched on or off for individual detectors by // | |
35 | // // | |
36 | // rec.SetRunReconstruction("..."); // | |
37 | // // | |
38 | // The argument is a (case sensitive) string with the names of the // | |
39 | // detectors separated by a space. The special string "ALL" selects all // | |
40 | // available detectors. This is the default. // | |
41 | // // | |
42 | // The tracking in ITS, TPC and TRD and the creation of ESD tracks can be // | |
43 | // switched off by // | |
44 | // // | |
45 | // rec.SetRunTracking(kFALSE); // | |
46 | // // | |
47 | // The filling of additional ESD information can be steered by // | |
48 | // // | |
49 | // rec.SetFillESD("..."); // | |
50 | // // | |
51 | // Again, the string specifies the list of detectors. The default is "ALL". // | |
52 | // // | |
53 | // The reconstruction requires digits as input. For the creation of digits // | |
54 | // have a look at the class AliSimulation. // | |
55 | // // | |
56 | /////////////////////////////////////////////////////////////////////////////// | |
57 | ||
58 | ||
59 | #include "AliReconstruction.h" | |
60 | #include "AliRunLoader.h" | |
61 | #include "AliRun.h" | |
62 | #include "AliModule.h" | |
63 | #include "AliDetector.h" | |
64 | #include "AliTracker.h" | |
65 | #include "AliESD.h" | |
66 | #include "AliHeader.h" | |
67 | #include "AliGenEventHeader.h" | |
68 | #include "AliESDpid.h" | |
69 | #include <TArrayF.h> | |
70 | ||
71 | ||
72 | ClassImp(AliReconstruction) | |
73 | ||
74 | ||
75 | //_____________________________________________________________________________ | |
76 | AliReconstruction::AliReconstruction(const char* name, const char* title) : | |
77 | TNamed(name, title) | |
78 | { | |
79 | // create reconstruction object with default parameters | |
80 | ||
81 | Init(); | |
82 | } | |
83 | ||
84 | //_____________________________________________________________________________ | |
85 | AliReconstruction::AliReconstruction(const AliReconstruction& rec) : | |
86 | TNamed(rec) | |
87 | { | |
88 | // copy constructor | |
89 | ||
90 | fRunReconstruction = rec.fRunReconstruction; | |
91 | fRunTracking = rec.fRunTracking; | |
92 | fStopOnError = rec.fStopOnError; | |
93 | ||
94 | fGAliceFileName = rec.fGAliceFileName; | |
95 | ||
96 | fRunLoader = NULL; | |
97 | } | |
98 | ||
99 | //_____________________________________________________________________________ | |
100 | AliReconstruction& AliReconstruction::operator = (const AliReconstruction& rec) | |
101 | { | |
102 | // assignment operator | |
103 | ||
104 | this->~AliReconstruction(); | |
105 | new(this) AliReconstruction(rec); | |
106 | return *this; | |
107 | } | |
108 | ||
109 | //_____________________________________________________________________________ | |
110 | AliReconstruction::~AliReconstruction() | |
111 | { | |
112 | // clean up | |
113 | ||
114 | } | |
115 | ||
116 | //_____________________________________________________________________________ | |
117 | void AliReconstruction::Init() | |
118 | { | |
119 | // set default parameters | |
120 | ||
121 | fRunReconstruction = "ALL"; | |
122 | fRunTracking = kTRUE; | |
123 | fFillESD = "ALL"; | |
124 | fStopOnError = kFALSE; | |
125 | ||
126 | fGAliceFileName = "galice.root"; | |
127 | ||
128 | fRunLoader = NULL; | |
129 | } | |
130 | ||
131 | ||
132 | //_____________________________________________________________________________ | |
133 | void AliReconstruction::SetGAliceFile(const char* fileName) | |
134 | { | |
135 | // set the name of the galice file | |
136 | ||
137 | fGAliceFileName = fileName; | |
138 | } | |
139 | ||
140 | ||
141 | //_____________________________________________________________________________ | |
142 | Bool_t AliReconstruction::Run() | |
143 | { | |
144 | // run the reconstruction | |
145 | ||
146 | // open the run loader | |
147 | if (fRunLoader) delete fRunLoader; | |
148 | fRunLoader = AliRunLoader::Open(fGAliceFileName.Data()); | |
149 | if (!fRunLoader) { | |
150 | Error("Run", "no run loader found in file %s", | |
151 | fGAliceFileName.Data()); | |
152 | return kFALSE; | |
153 | } | |
154 | fRunLoader->LoadgAlice(); | |
155 | gAlice = fRunLoader->GetAliRun(); | |
156 | if (!gAlice) { | |
157 | Error("Run", "no gAlice object found in file %s", | |
158 | fGAliceFileName.Data()); | |
159 | return kFALSE; | |
160 | } | |
161 | ||
162 | // local reconstruction | |
163 | if (!fRunReconstruction.IsNull()) { | |
164 | if (!RunReconstruction(fRunReconstruction)) { | |
165 | if (fStopOnError) return kFALSE; | |
166 | } | |
167 | } | |
168 | if (!fRunTracking && fFillESD.IsNull()) return kTRUE; | |
169 | ||
170 | // get loaders and trackers | |
171 | fITSLoader = fRunLoader->GetLoader("ITSLoader"); | |
172 | if (!fITSLoader) { | |
173 | Error("Run", "no ITS loader found"); | |
174 | if (fStopOnError) return kFALSE; | |
175 | } | |
176 | fITSTracker = NULL; | |
177 | if (gAlice->GetDetector("ITS")) { | |
178 | fITSTracker = gAlice->GetDetector("ITS")->CreateTracker(); | |
179 | } | |
180 | if (!fITSTracker) { | |
181 | Error("Run", "couldn't create a tracker for ITS"); | |
182 | if (fStopOnError) return kFALSE; | |
183 | } | |
184 | ||
185 | fTPCLoader = fRunLoader->GetLoader("TPCLoader"); | |
186 | if (!fTPCLoader) { | |
187 | Error("Run", "no TPC loader found"); | |
188 | if (fStopOnError) return kFALSE; | |
189 | } | |
190 | fTPCTracker = NULL; | |
191 | if (gAlice->GetDetector("TPC")) { | |
192 | fTPCTracker = gAlice->GetDetector("TPC")->CreateTracker(); | |
193 | } | |
194 | if (!fTPCTracker) { | |
195 | Error("Run", "couldn't create a tracker for TPC"); | |
196 | if (fStopOnError) return kFALSE; | |
197 | } | |
198 | ||
199 | fTRDLoader = fRunLoader->GetLoader("TRDLoader"); | |
200 | if (!fTRDLoader) { | |
201 | Error("Run", "no TRD loader found"); | |
202 | if (fStopOnError) return kFALSE; | |
203 | } | |
204 | fTRDTracker = NULL; | |
205 | if (gAlice->GetDetector("TRD")) { | |
206 | fTRDTracker = gAlice->GetDetector("TRD")->CreateTracker(); | |
207 | } | |
208 | if (!fTRDTracker) { | |
209 | Error("Run", "couldn't create a tracker for TRD"); | |
210 | if (fStopOnError) return kFALSE; | |
211 | } | |
212 | ||
213 | fTOFLoader = fRunLoader->GetLoader("TOFLoader"); | |
214 | if (!fTOFLoader) { | |
215 | Error("Run", "no TOF loader found"); | |
216 | if (fStopOnError) return kFALSE; | |
217 | } | |
218 | fTOFTracker = NULL; | |
219 | if (gAlice->GetDetector("TOF")) { | |
220 | fTOFTracker = gAlice->GetDetector("TOF")->CreateTracker(); | |
221 | } | |
222 | if (!fTOFTracker) { | |
223 | Error("Run", "couldn't create a tracker for TOF"); | |
224 | if (fStopOnError) return kFALSE; | |
225 | } | |
226 | ||
227 | // create the ESD output file | |
228 | TFile* file = TFile::Open("AliESDs.root", "RECREATE"); | |
229 | if (!file->IsOpen()) { | |
230 | Error("Run", "opening AliESDs.root failed"); | |
231 | if (fStopOnError) return kFALSE; | |
232 | } | |
233 | ||
234 | // loop over events | |
235 | for (Int_t iEvent = 0; iEvent < fRunLoader->GetNumberOfEvents(); iEvent++) { | |
236 | Info("Run", "processing event %d", iEvent); | |
237 | AliESD* esd = new AliESD; | |
238 | fRunLoader->GetEvent(iEvent); | |
239 | esd->SetRunNumber(gAlice->GetRunNumber()); | |
240 | esd->SetEventNumber(gAlice->GetEvNumber()); | |
241 | ||
242 | // barrel tracking | |
243 | if (fRunTracking) { | |
244 | if (!RunTracking(esd)) { | |
245 | if (fStopOnError) return kFALSE; | |
246 | } | |
247 | } | |
248 | ||
249 | // fill ESD | |
250 | if (!fFillESD.IsNull()) { | |
251 | if (!FillESD(esd, fFillESD)) { | |
252 | if (fStopOnError) return kFALSE; | |
253 | } | |
254 | } | |
255 | ||
256 | // combined PID | |
257 | AliESDpid::MakePID(esd); | |
258 | ||
259 | // write ESD | |
260 | char name[100]; | |
261 | sprintf(name, "ESD%d", iEvent); | |
262 | file->cd(); | |
263 | if (!esd->Write(name)) { | |
264 | Error("Run", "writing ESD failed"); | |
265 | if (fStopOnError) return kFALSE; | |
266 | } | |
267 | } | |
268 | ||
269 | file->Close(); | |
270 | ||
271 | return kTRUE; | |
272 | } | |
273 | ||
274 | ||
275 | //_____________________________________________________________________________ | |
276 | Bool_t AliReconstruction::RunReconstruction(const TString& detectors) | |
277 | { | |
278 | // run the reconstruction | |
279 | ||
280 | TString detStr = detectors; | |
281 | TObjArray* detArray = gAlice->Detectors(); | |
282 | for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) { | |
283 | AliModule* det = (AliModule*) detArray->At(iDet); | |
284 | if (!det || !det->IsActive()) continue; | |
285 | if (IsSelected(det->GetName(), detStr)) { | |
286 | Info("RunReconstruction", "running reconstruction for %s", | |
287 | det->GetName()); | |
288 | det->Reconstruct(); | |
289 | } | |
290 | } | |
291 | ||
292 | if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) { | |
293 | Error("RunReconstruction", "the following detectors were not found: %s", | |
294 | detStr.Data()); | |
295 | if (fStopOnError) return kFALSE; | |
296 | } | |
297 | ||
298 | return kTRUE; | |
299 | } | |
300 | ||
301 | //_____________________________________________________________________________ | |
302 | Bool_t AliReconstruction::RunTracking(AliESD* esd) | |
303 | { | |
304 | // run the barrel tracking | |
305 | ||
306 | // get the primary vertex (from MC for the moment) | |
307 | TArrayF vertex(3); | |
308 | fRunLoader->GetHeader()->GenEventHeader()->PrimaryVertex(vertex); | |
309 | Double_t vtxPos[3] = {vertex[0], vertex[1], vertex[2]}; | |
310 | Double_t vtxCov[6] = { | |
311 | 0.005, | |
312 | 0.000, 0.005, | |
313 | 0.000, 0.000, 0.010 | |
314 | }; | |
315 | Double_t vtxErr[3] = {vtxCov[0], vtxCov[2], vtxCov[5]}; // diag. elements | |
316 | esd->SetVertex(vtxPos, vtxCov); | |
317 | fITSTracker->SetVertex(vtxPos, vtxErr); | |
318 | fTPCTracker->SetVertex(vtxPos, vtxErr); | |
319 | fTRDTracker->SetVertex(vtxPos, vtxErr); | |
320 | ||
321 | // TPC inward fit | |
322 | Info("RunTracking", "TPC inward fit"); | |
323 | fTPCLoader->LoadRecPoints("read"); | |
324 | TTree* tpcTree = fTPCLoader->TreeR(); | |
325 | if (!tpcTree) { | |
326 | Error("RunTracking", "Can't get the TPC cluster tree"); | |
327 | return kFALSE; | |
328 | } | |
329 | fTPCTracker->LoadClusters(tpcTree); | |
330 | if (fTPCTracker->Clusters2Tracks(esd) != 0) { | |
331 | Error("RunTracking", "TPC inward track fit failed"); | |
332 | return kFALSE; | |
333 | } | |
334 | ||
335 | // ITS inward fit | |
336 | Info("RunTracking", "ITS inward fit"); | |
337 | fITSLoader->LoadRecPoints("read"); | |
338 | TTree* itsTree = fITSLoader->TreeR(); | |
339 | if (!itsTree) { | |
340 | Error("RunTracking", "Can't get the ITS cluster tree"); | |
341 | return kFALSE; | |
342 | } | |
343 | fITSTracker->LoadClusters(itsTree); | |
344 | if (fITSTracker->Clusters2Tracks(esd) != 0) { | |
345 | Error("RunTracking", "ITS inward track fit failed"); | |
346 | return kFALSE; | |
347 | } | |
348 | ||
349 | // ITS back propagation | |
350 | Info("RunTracking", "ITS back propagation"); | |
351 | if (fITSTracker->PropagateBack(esd) != 0) { | |
352 | Error("RunTracking", "ITS backward propagation failed"); | |
353 | return kFALSE; | |
354 | } | |
355 | ||
356 | // TPC back propagation | |
357 | Info("RunTracking", "TPC back propagation"); | |
358 | if (fTPCTracker->PropagateBack(esd) != 0) { | |
359 | Error("RunTracking", "TPC backward propagation failed"); | |
360 | return kFALSE; | |
361 | } | |
362 | ||
363 | // TRD back propagation | |
364 | Info("RunTracking", "TRD back propagation"); | |
365 | fTRDLoader->LoadRecPoints("read"); | |
366 | TTree* trdTree = fTRDLoader->TreeR(); | |
367 | if (!trdTree) { | |
368 | Error("RunTracking", "Can't get the TRD cluster tree"); | |
369 | return kFALSE; | |
370 | } | |
371 | fTRDTracker->LoadClusters(trdTree); | |
372 | if (fTRDTracker->PropagateBack(esd) != 0) { | |
373 | Error("RunTracking", "TRD backward propagation failed"); | |
374 | return kFALSE; | |
375 | } | |
376 | ||
377 | // TOF back propagation | |
378 | Info("RunTracking", "TOF back propagation"); | |
379 | fTOFLoader->LoadDigits("read"); | |
380 | TTree* tofTree = fTOFLoader->TreeD(); | |
381 | if (!tofTree) { | |
382 | Error("RunTracking", "Can't get the TOF digits tree"); | |
383 | return kFALSE; | |
384 | } | |
385 | fTOFTracker->LoadClusters(tofTree); | |
386 | if (fTOFTracker->PropagateBack(esd) != 0) { | |
387 | Error("RunTracking", "TOF backward propagation failed"); | |
388 | return kFALSE; | |
389 | } | |
390 | fTOFTracker->UnloadClusters(); | |
391 | fTOFLoader->UnloadDigits(); | |
392 | ||
393 | // TRD inward refit | |
394 | Info("RunTracking", "TRD inward refit"); | |
395 | if (fTRDTracker->RefitInward(esd) != 0) { | |
396 | Error("RunTracking", "TRD inward refit failed"); | |
397 | return kFALSE; | |
398 | } | |
399 | fTRDTracker->UnloadClusters(); | |
400 | fTRDLoader->UnloadRecPoints(); | |
401 | ||
402 | // TPC inward refit | |
403 | Info("RunTracking", "TPC inward refit"); | |
404 | if (fTPCTracker->RefitInward(esd) != 0) { | |
405 | Error("RunTracking", "TPC inward refit failed"); | |
406 | return kFALSE; | |
407 | } | |
408 | fTPCTracker->UnloadClusters(); | |
409 | fTPCLoader->UnloadRecPoints(); | |
410 | ||
411 | // ITS inward refit | |
412 | Info("RunTracking", "ITS inward refit"); | |
413 | if (fITSTracker->RefitInward(esd) != 0) { | |
414 | Error("RunTracking", "ITS inward refit failed"); | |
415 | return kFALSE; | |
416 | } | |
417 | fITSTracker->UnloadClusters(); | |
418 | fITSLoader->UnloadRecPoints(); | |
419 | ||
420 | return kTRUE; | |
421 | } | |
422 | ||
423 | //_____________________________________________________________________________ | |
424 | Bool_t AliReconstruction::FillESD(AliESD* esd, const TString& detectors) | |
425 | { | |
426 | // fill the event summary data | |
427 | ||
428 | TString detStr = detectors; | |
429 | TObjArray* detArray = gAlice->Detectors(); | |
430 | for (Int_t iDet = 0; iDet < detArray->GetEntriesFast(); iDet++) { | |
431 | AliModule* det = (AliModule*) detArray->At(iDet); | |
432 | if (!det || !det->IsActive()) continue; | |
433 | if (IsSelected(det->GetName(), detStr)) { | |
434 | Info("FillESD", "filling ESD for %s", | |
435 | det->GetName()); | |
436 | det->FillESD(esd); | |
437 | } | |
438 | } | |
439 | ||
440 | if ((detStr.CompareTo("ALL") != 0) && !detStr.IsNull()) { | |
441 | Error("FillESD", "the following detectors were not found: %s", | |
442 | detStr.Data()); | |
443 | if (fStopOnError) return kFALSE; | |
444 | } | |
445 | ||
446 | return kTRUE; | |
447 | } | |
448 | ||
449 | ||
450 | //_____________________________________________________________________________ | |
451 | Bool_t AliReconstruction::IsSelected(TString detName, TString& detectors) const | |
452 | { | |
453 | // check whether detName is contained in detectors | |
454 | // if yes, it is removed from detectors | |
455 | ||
456 | // check if all detectors are selected | |
457 | if ((detectors.CompareTo("ALL") == 0) || | |
458 | detectors.BeginsWith("ALL ") || | |
459 | detectors.EndsWith(" ALL") || | |
460 | detectors.Contains(" ALL ")) { | |
461 | detectors = "ALL"; | |
462 | return kTRUE; | |
463 | } | |
464 | ||
465 | // search for the given detector | |
466 | Bool_t result = kFALSE; | |
467 | if ((detectors.CompareTo(detName) == 0) || | |
468 | detectors.BeginsWith(detName+" ") || | |
469 | detectors.EndsWith(" "+detName) || | |
470 | detectors.Contains(" "+detName+" ")) { | |
471 | detectors.ReplaceAll(detName, ""); | |
472 | result = kTRUE; | |
473 | } | |
474 | ||
475 | // clean up the detectors string | |
476 | while (detectors.Contains(" ")) detectors.ReplaceAll(" ", " "); | |
477 | while (detectors.BeginsWith(" ")) detectors.Remove(0, 1); | |
478 | while (detectors.EndsWith(" ")) detectors.Remove(detectors.Length()-1, 1); | |
479 | ||
480 | return result; | |
481 | } |