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