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93836e1b | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved * | |
5fe09262 | 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 | // Class AliMCEventHandler | |
19 | // This class gives access to MC truth during the analysis. | |
20 | // Monte Carlo truth is containe in the kinematics tree (produced particles) and | |
21 | // the tree of reference hits. | |
22 | // | |
23 | // Origin: Andreas Morsch, CERN, andreas.morsch@cern.ch | |
24 | //--------------------------------------------------------------------------------- | |
25 | ||
26 | ||
27 | ||
28 | #include "AliMCEventHandler.h" | |
415d9f5c | 29 | #include "AliMCEvent.h" |
93836e1b | 30 | #include "AliMCParticle.h" |
82418625 | 31 | #include "AliPDG.h" |
5fe09262 | 32 | #include "AliTrackReference.h" |
33 | #include "AliHeader.h" | |
34 | #include "AliStack.h" | |
2c36081e | 35 | #include "AliLog.h" |
5fe09262 | 36 | |
37 | #include <TTree.h> | |
38 | #include <TFile.h> | |
93836e1b | 39 | #include <TList.h> |
5fe09262 | 40 | #include <TParticle.h> |
0a05cd41 | 41 | #include <TString.h> |
5fe09262 | 42 | #include <TClonesArray.h> |
43 | #include <TDirectoryFile.h> | |
5fe09262 | 44 | |
45 | ClassImp(AliMCEventHandler) | |
46 | ||
47 | AliMCEventHandler::AliMCEventHandler() : | |
d2f1d9ef | 48 | AliVEventHandler(), |
415d9f5c | 49 | fMCEvent(new AliMCEvent()), |
5fe09262 | 50 | fFileE(0), |
51 | fFileK(0), | |
52 | fFileTR(0), | |
5fe09262 | 53 | fTreeE(0), |
54 | fTreeK(0), | |
55 | fTreeTR(0), | |
5efedd31 | 56 | fDirK(0), |
57 | fDirTR(0), | |
da97a08a | 58 | fParticleSelected(0), |
59 | fLabelMap(0), | |
5fe09262 | 60 | fNEvent(-1), |
61 | fEvent(-1), | |
0a05cd41 | 62 | fPathName(new TString("./")), |
9aea8469 | 63 | fExtension(""), |
64 | fFileNumber(0), | |
969c7896 | 65 | fEventsPerFile(0), |
c8b7b5d3 | 66 | fReadTR(kTRUE), |
93836e1b | 67 | fInitOk(kFALSE), |
68 | fSubsidiaryHandlers(0), | |
35152e4b | 69 | fEventsInContainer(0), |
70 | fPreReadMode(kNoPreRead) | |
5fe09262 | 71 | { |
82418625 | 72 | // |
73 | // Default constructor | |
74 | // | |
75 | // Be sure to add all particles to the PDG database | |
76 | AliPDG::AddParticlesToPdgDataBase(); | |
5fe09262 | 77 | } |
78 | ||
79 | AliMCEventHandler::AliMCEventHandler(const char* name, const char* title) : | |
d2f1d9ef | 80 | AliVEventHandler(name, title), |
415d9f5c | 81 | fMCEvent(new AliMCEvent()), |
5fe09262 | 82 | fFileE(0), |
83 | fFileK(0), | |
84 | fFileTR(0), | |
5fe09262 | 85 | fTreeE(0), |
86 | fTreeK(0), | |
87 | fTreeTR(0), | |
5efedd31 | 88 | fDirK(0), |
89 | fDirTR(0), | |
da97a08a | 90 | fParticleSelected(0), |
91 | fLabelMap(0), | |
5fe09262 | 92 | fNEvent(-1), |
93 | fEvent(-1), | |
0a05cd41 | 94 | fPathName(new TString("./")), |
9aea8469 | 95 | fExtension(""), |
96 | fFileNumber(0), | |
0cd61c1d | 97 | fEventsPerFile(0), |
c8b7b5d3 | 98 | fReadTR(kTRUE), |
93836e1b | 99 | fInitOk(kFALSE), |
100 | fSubsidiaryHandlers(0), | |
35152e4b | 101 | fEventsInContainer(0), |
102 | fPreReadMode(kNoPreRead) | |
5fe09262 | 103 | { |
82418625 | 104 | // |
105 | // Constructor | |
106 | // | |
107 | // Be sure to add all particles to the PDG database | |
108 | AliPDG::AddParticlesToPdgDataBase(); | |
5fe09262 | 109 | } |
110 | AliMCEventHandler::~AliMCEventHandler() | |
111 | { | |
112 | // Destructor | |
415d9f5c | 113 | delete fMCEvent; |
5fe09262 | 114 | delete fFileE; |
115 | delete fFileK; | |
116 | delete fFileTR; | |
117 | } | |
118 | ||
300d5701 | 119 | Bool_t AliMCEventHandler::Init(Option_t* opt) |
5fe09262 | 120 | { |
121 | // Initialize input | |
122 | // | |
6073f8c9 | 123 | if (!(strcmp(opt, "proof")) || !(strcmp(opt, "local"))) return kTRUE; |
124 | // | |
0a05cd41 | 125 | fFileE = TFile::Open(Form("%sgalice.root", fPathName->Data())); |
c8b7b5d3 | 126 | if (!fFileE) { |
127 | AliError(Form("AliMCEventHandler:galice.root not found in directory %s ! \n", fPathName->Data())); | |
128 | fInitOk = kFALSE; | |
129 | return kFALSE; | |
130 | } | |
131 | ||
415d9f5c | 132 | // |
133 | // Tree E | |
5fe09262 | 134 | fFileE->GetObject("TE", fTreeE); |
415d9f5c | 135 | // Connect Tree E to the MCEvent |
136 | fMCEvent->ConnectTreeE(fTreeE); | |
5fe09262 | 137 | fNEvent = fTreeE->GetEntries(); |
138 | // | |
139 | // Tree K | |
0a05cd41 | 140 | fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension)); |
c8b7b5d3 | 141 | if (!fFileK) { |
142 | AliError(Form("AliMCEventHandler:Kinematics.root not found in directory %s ! \n", fPathName)); | |
143 | fInitOk = kFALSE; | |
b72029a3 | 144 | return kTRUE; |
c8b7b5d3 | 145 | } |
146 | ||
9aea8469 | 147 | fEventsPerFile = fFileK->GetNkeys() - fFileK->GetNProcessIDs(); |
5fe09262 | 148 | // |
149 | // Tree TR | |
969c7896 | 150 | if (fReadTR) { |
c8b7b5d3 | 151 | fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension)); |
152 | if (!fFileTR) { | |
153 | AliError(Form("AliMCEventHandler:TrackRefs.root not found in directory %s ! \n", fPathName->Data())); | |
154 | fInitOk = kFALSE; | |
b72029a3 | 155 | return kTRUE; |
c8b7b5d3 | 156 | } |
969c7896 | 157 | } |
5fe09262 | 158 | // |
159 | // Reset the event number | |
2c36081e | 160 | fEvent = -1; |
161 | fFileNumber = 0; | |
b544c64d | 162 | AliInfo(Form("Number of events in this directory %5d \n", fNEvent)); |
c8b7b5d3 | 163 | fInitOk = kTRUE; |
93836e1b | 164 | |
165 | ||
166 | if (fSubsidiaryHandlers) { | |
167 | TIter next(fSubsidiaryHandlers); | |
168 | AliMCEventHandler *handler; | |
169 | while((handler = (AliMCEventHandler*)next())) { | |
170 | handler->Init(opt); | |
171 | handler->SetNumberOfEventsInContainer(fNEvent); | |
172 | } | |
173 | } | |
174 | ||
5fe09262 | 175 | return kTRUE; |
5fe09262 | 176 | } |
177 | ||
9aea8469 | 178 | Bool_t AliMCEventHandler::GetEvent(Int_t iev) |
179 | { | |
180 | // Load the event number iev | |
2c36081e | 181 | // |
182 | // Calculate the file number | |
c8b7b5d3 | 183 | if (!fInitOk) return kFALSE; |
184 | ||
415d9f5c | 185 | Int_t inew = iev / fEventsPerFile; |
9aea8469 | 186 | if (inew != fFileNumber) { |
187 | fFileNumber = inew; | |
188 | if (!OpenFile(fFileNumber)){ | |
189 | return kFALSE; | |
190 | } | |
191 | } | |
2c36081e | 192 | // Folder name |
5fe09262 | 193 | char folder[20]; |
9aea8469 | 194 | sprintf(folder, "Event%d", iev); |
5fe09262 | 195 | // TreeE |
9aea8469 | 196 | fTreeE->GetEntry(iev); |
5fe09262 | 197 | // Tree K |
5efedd31 | 198 | fFileK->GetObject(folder, fDirK); |
199 | if (!fDirK) { | |
2c36081e | 200 | AliWarning(Form("AliMCEventHandler: Event #%5d not found\n", iev)); |
9aea8469 | 201 | return kFALSE; |
202 | } | |
b72029a3 | 203 | |
5efedd31 | 204 | fDirK ->GetObject("TreeK", fTreeK); |
415d9f5c | 205 | // Connect TreeK to MCEvent |
206 | fMCEvent->ConnectTreeK(fTreeK); | |
5fe09262 | 207 | //Tree TR |
07bd4750 | 208 | if (fFileTR) { |
5efedd31 | 209 | // Check which format has been read |
210 | fFileTR->GetObject(folder, fDirTR); | |
211 | fDirTR->GetObject("TreeTR", fTreeTR); | |
415d9f5c | 212 | // |
213 | // Connect TR to MCEvent | |
214 | fMCEvent->ConnectTreeTR(fTreeTR); | |
5fe09262 | 215 | } |
93836e1b | 216 | |
5fe09262 | 217 | // |
5fe09262 | 218 | return kTRUE; |
9aea8469 | 219 | } |
220 | ||
221 | Bool_t AliMCEventHandler::OpenFile(Int_t i) | |
222 | { | |
223 | // Open file i | |
9aea8469 | 224 | if (i > 0) { |
225 | fExtension = Form("%d", i); | |
226 | } else { | |
227 | fExtension = ""; | |
228 | } | |
229 | ||
230 | ||
231 | delete fFileK; | |
0a05cd41 | 232 | fFileK = TFile::Open(Form("%sKinematics%s.root", fPathName->Data(), fExtension)); |
9aea8469 | 233 | if (!fFileK) { |
c8b7b5d3 | 234 | AliError(Form("AliMCEventHandler:Kinematics%s.root not found in directory %s ! \n", fExtension, fPathName->Data())); |
235 | fInitOk = kFALSE; | |
236 | return kFALSE; | |
9aea8469 | 237 | } |
238 | ||
c8b7b5d3 | 239 | if (fReadTR) { |
240 | delete fFileTR; | |
241 | fFileTR = TFile::Open(Form("%sTrackRefs%s.root", fPathName->Data(), fExtension)); | |
242 | if (!fFileTR) { | |
243 | AliWarning(Form("AliMCEventHandler:TrackRefs%s.root not found in directory %s ! \n", fExtension, fPathName->Data())); | |
244 | fInitOk = kFALSE; | |
245 | return kFALSE; | |
246 | } | |
9aea8469 | 247 | } |
248 | ||
c8b7b5d3 | 249 | fInitOk = kTRUE; |
93836e1b | 250 | |
c8b7b5d3 | 251 | return kTRUE; |
9aea8469 | 252 | } |
253 | ||
ed97dc98 | 254 | Bool_t AliMCEventHandler::BeginEvent(Long64_t entry) |
9aea8469 | 255 | { |
da97a08a | 256 | fParticleSelected.Delete(); |
257 | fLabelMap.Delete(); | |
9aea8469 | 258 | // Read the next event |
93836e1b | 259 | |
260 | if (fEventsInContainer != 0) { | |
11e4d716 | 261 | entry = (Long64_t) ( entry * Float_t(fNEvent) / Float_t (fEventsInContainer)); |
93836e1b | 262 | } |
263 | ||
264 | ||
ed97dc98 | 265 | if (entry == -1) { |
266 | fEvent++; | |
267 | entry = fEvent; | |
268 | } else { | |
269 | fEvent = entry; | |
270 | } | |
271 | ||
272 | if (entry >= fNEvent) { | |
93836e1b | 273 | AliWarning(Form("AliMCEventHandler: Event number out of range %5d %5d\n", entry, fNEvent)); |
9aea8469 | 274 | return kFALSE; |
275 | } | |
93836e1b | 276 | |
277 | Bool_t result = GetEvent(entry); | |
278 | ||
279 | if (fSubsidiaryHandlers) { | |
280 | TIter next(fSubsidiaryHandlers); | |
281 | AliMCEventHandler *handler; | |
282 | while((handler = (AliMCEventHandler*)next())) { | |
283 | handler->BeginEvent(entry); | |
284 | } | |
285 | next.Reset(); | |
286 | while((handler = (AliMCEventHandler*)next())) { | |
287 | fMCEvent->AddSubsidiaryEvent(handler->MCEvent()); | |
288 | } | |
289 | fMCEvent->InitEvent(); | |
290 | } | |
35152e4b | 291 | |
292 | if (fPreReadMode == kLmPreRead) { | |
293 | fMCEvent->PreReadAll(); | |
294 | } | |
295 | ||
93836e1b | 296 | return result; |
297 | ||
5fe09262 | 298 | } |
299 | ||
da97a08a | 300 | void AliMCEventHandler::SelectParticle(Int_t i){ |
301 | // taking the absolute values here, need to take care | |
302 | // of negative daughter and mother | |
303 | // IDs when setting! | |
93836e1b | 304 | if (TMath::Abs(i) >= AliMCEvent::BgLabelOffset()) i = fMCEvent->BgLabelToIndex(TMath::Abs(i)); |
305 | if(!IsParticleSelected(TMath::Abs(i)))fParticleSelected.Add(TMath::Abs(i),1); | |
da97a08a | 306 | } |
307 | ||
308 | Bool_t AliMCEventHandler::IsParticleSelected(Int_t i) { | |
309 | // taking the absolute values here, need to take | |
310 | // care with negative daughter and mother | |
311 | // IDs when setting! | |
312 | return (fParticleSelected.GetValue(TMath::Abs(i))==1); | |
313 | } | |
314 | ||
315 | ||
316 | void AliMCEventHandler::CreateLabelMap(){ | |
317 | ||
318 | // | |
319 | // this should be called once all selections where done | |
320 | // | |
321 | ||
322 | fLabelMap.Delete(); | |
323 | if(!fMCEvent){ | |
324 | fParticleSelected.Delete(); | |
325 | return; | |
326 | } | |
327 | ||
328 | VerifySelectedParticles(); | |
da97a08a | 329 | |
330 | Int_t iNew = 0; | |
93836e1b | 331 | for(int i = 0;i < fMCEvent->GetNumberOfTracks();++i){ |
da97a08a | 332 | if(IsParticleSelected(i)){ |
333 | fLabelMap.Add(i,iNew); | |
334 | iNew++; | |
335 | } | |
336 | } | |
337 | } | |
338 | ||
339 | Int_t AliMCEventHandler::GetNewLabel(Int_t i) { | |
93836e1b | 340 | // Gets the label from the new created Map |
da97a08a | 341 | // Call CreatLabelMap before |
342 | // otherwise only 0 returned | |
343 | return fLabelMap.GetValue(TMath::Abs(i)); | |
344 | } | |
345 | ||
346 | void AliMCEventHandler::VerifySelectedParticles(){ | |
347 | ||
348 | // | |
349 | // Make sure that each particle has at least it's predecessors | |
350 | // selected so that we have the complete ancestry tree | |
351 | // Private, should be only called by CreateLabelMap | |
352 | ||
353 | if(!fMCEvent){ | |
93836e1b | 354 | fParticleSelected.Delete(); |
355 | return; | |
da97a08a | 356 | } |
da97a08a | 357 | |
93836e1b | 358 | Int_t nprim = fMCEvent->GetNumberOfPrimaries(); |
359 | ||
360 | for(int i = 0;i < fMCEvent->GetNumberOfTracks(); ++i){ | |
361 | if(i < nprim){ | |
362 | SelectParticle(i);// take all primaries | |
363 | continue; | |
364 | } | |
365 | ||
366 | if(!IsParticleSelected(i))continue; | |
367 | ||
63a1afff | 368 | AliMCParticle* mcpart = (AliMCParticle*) fMCEvent->GetTrack(i); |
93836e1b | 369 | Int_t imo = mcpart->GetMother(); |
370 | while((imo >= nprim)&&!IsParticleSelected(imo)){ | |
371 | // Mother not yet selected | |
372 | SelectParticle(imo); | |
0f0c06de | 373 | mcpart = (AliMCParticle*) fMCEvent->GetTrack(imo); |
93836e1b | 374 | imo = mcpart->GetMother(); |
375 | } | |
376 | // after last step we may have an unselected primary | |
da97a08a | 377 | // mother |
378 | if(imo>=0){ | |
379 | if(!IsParticleSelected(imo)) | |
380 | SelectParticle(imo); | |
381 | } | |
382 | }// loop over all tracks | |
383 | } | |
384 | ||
5fe09262 | 385 | Int_t AliMCEventHandler::GetParticleAndTR(Int_t i, TParticle*& particle, TClonesArray*& trefs) |
386 | { | |
387 | // Retrieve entry i | |
c8b7b5d3 | 388 | if (!fInitOk) { |
389 | return 0; | |
390 | } else { | |
391 | return (fMCEvent->GetParticleAndTR(i, particle, trefs)); | |
392 | } | |
5fe09262 | 393 | } |
394 | ||
2d8f26f6 | 395 | void AliMCEventHandler::DrawCheck(Int_t i, Int_t search) |
5fe09262 | 396 | { |
397 | // Retrieve entry i and draw momentum vector and hits | |
415d9f5c | 398 | fMCEvent->DrawCheck(i, search); |
5fe09262 | 399 | } |
400 | ||
890126ab | 401 | Bool_t AliMCEventHandler::Notify(const char *path) |
5fe09262 | 402 | { |
53faeca4 | 403 | // Notify about directory change |
404 | // The directory is taken from the 'path' argument | |
405 | // Reconnect trees | |
406 | TString fileName(path); | |
407 | if(fileName.Contains("AliESDs.root")){ | |
408 | fileName.ReplaceAll("AliESDs.root", ""); | |
409 | } | |
c8b5ce3a | 410 | else if(fileName.Contains("AliAOD.root")){ |
411 | fileName.ReplaceAll("AliAOD.root", ""); | |
412 | } | |
53faeca4 | 413 | else if(fileName.Contains("galice.root")){ |
414 | // for running with galice and kinematics alone... | |
415 | fileName.ReplaceAll("galice.root", ""); | |
416 | } | |
39734d21 | 417 | else if (fileName.BeginsWith("root:")) { |
418 | fileName.Append("?ZIP="); | |
419 | } | |
93836e1b | 420 | |
53faeca4 | 421 | *fPathName = fileName; |
93836e1b | 422 | AliInfo(Form("Path: -%s-\n", fPathName->Data())); |
53faeca4 | 423 | |
f6065654 | 424 | ResetIO(); |
425 | InitIO(""); | |
426 | ||
93836e1b | 427 | // Handle subsidiary handlers |
428 | if (fSubsidiaryHandlers) { | |
429 | TIter next(fSubsidiaryHandlers); | |
430 | AliMCEventHandler *handler; | |
431 | while((handler = (AliMCEventHandler*) next())) { | |
432 | TString* spath = handler->GetInputPath(); | |
433 | if (spath->Contains("merged")) { | |
434 | if (! fPathName->IsNull()) { | |
435 | handler->Notify(Form("%s/../.", fPathName->Data())); | |
436 | } else { | |
437 | handler->Notify("../"); | |
438 | } | |
439 | } | |
440 | } | |
441 | } | |
442 | ||
5fe09262 | 443 | return kTRUE; |
444 | } | |
36e82a52 | 445 | |
5fe09262 | 446 | void AliMCEventHandler::ResetIO() |
447 | { | |
5efedd31 | 448 | // Clear header and stack |
b72029a3 | 449 | |
aff49450 | 450 | if (fInitOk) fMCEvent->Clean(); |
5efedd31 | 451 | |
36e82a52 | 452 | // Delete Tree E |
415d9f5c | 453 | delete fTreeE; fTreeE = 0; |
b72029a3 | 454 | |
5efedd31 | 455 | // Reset files |
89f249fc | 456 | if (fFileE) {delete fFileE; fFileE = 0;} |
457 | if (fFileK) {delete fFileK; fFileK = 0;} | |
458 | if (fFileTR) {delete fFileTR; fFileTR = 0;} | |
19cfde04 | 459 | fExtension=""; |
c8b7b5d3 | 460 | fInitOk = kFALSE; |
93836e1b | 461 | |
462 | if (fSubsidiaryHandlers) { | |
463 | TIter next(fSubsidiaryHandlers); | |
464 | AliMCEventHandler *handler; | |
465 | while((handler = (AliMCEventHandler*)next())) { | |
466 | handler->ResetIO(); | |
467 | } | |
468 | } | |
469 | ||
5fe09262 | 470 | } |
471 | ||
472 | ||
473 | Bool_t AliMCEventHandler::FinishEvent() | |
474 | { | |
5efedd31 | 475 | // Clean-up after each event |
476 | delete fDirTR; fDirTR = 0; | |
477 | delete fDirK; fDirK = 0; | |
aff49450 | 478 | if (fInitOk) fMCEvent->FinishEvent(); |
93836e1b | 479 | |
480 | if (fSubsidiaryHandlers) { | |
481 | TIter next(fSubsidiaryHandlers); | |
482 | AliMCEventHandler *handler; | |
483 | while((handler = (AliMCEventHandler*)next())) { | |
484 | handler->FinishEvent(); | |
485 | } | |
486 | } | |
487 | ||
5fe09262 | 488 | return kTRUE; |
489 | } | |
490 | ||
491 | Bool_t AliMCEventHandler::Terminate() | |
492 | { | |
493 | // Dummy | |
494 | return kTRUE; | |
495 | } | |
496 | ||
497 | Bool_t AliMCEventHandler::TerminateIO() | |
498 | { | |
499 | // Dummy | |
500 | return kTRUE; | |
501 | } | |
502 | ||
0a05cd41 | 503 | |
0931e76a | 504 | void AliMCEventHandler::SetInputPath(const char* fname) |
0a05cd41 | 505 | { |
506 | // Set the input path name | |
507 | delete fPathName; | |
508 | fPathName = new TString(fname); | |
509 | } | |
93836e1b | 510 | |
511 | void AliMCEventHandler::AddSubsidiaryHandler(AliMCEventHandler* handler) | |
512 | { | |
513 | // Add a subsidiary handler. For example for background events | |
514 | ||
515 | if (!fSubsidiaryHandlers) fSubsidiaryHandlers = new TList(); | |
516 | fSubsidiaryHandlers->Add(handler); | |
517 | } |