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9e1a0ddb | 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 | ||
acd84897 | 16 | /* $Id$ */ |
9e1a0ddb | 17 | |
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
af7ba10c | 20 | // Particles stack class // |
21 | // Implements the TMCVirtualStack of the Virtual Monte Carlo // | |
22 | // Holds the particles transported during simulation // | |
23 | // Is used to compare results of reconstruction with simulation // | |
24 | // Author A.Morsch // | |
9e1a0ddb | 25 | // // |
26 | /////////////////////////////////////////////////////////////////////////////// | |
27 | ||
9e1a0ddb | 28 | |
29 | #include <TObjArray.h> | |
30 | #include <TParticle.h> | |
fe046ade | 31 | #include <TParticlePDG.h> |
9e1a0ddb | 32 | #include <TTree.h> |
9e1a0ddb | 33 | |
9e1a0ddb | 34 | #include "AliHit.h" |
88cb7938 | 35 | #include "AliModule.h" |
36 | #include "AliRun.h" | |
5d12ce38 | 37 | #include "AliMC.h" |
88cb7938 | 38 | #include "AliRunLoader.h" |
39 | #include "AliStack.h" | |
9e1a0ddb | 40 | |
41 | ClassImp(AliStack) | |
42 | ||
e2afb3b6 | 43 | //_______________________________________________________________________ |
44 | AliStack::AliStack(): | |
45 | fParticles(0), | |
46 | fParticleMap(0), | |
47 | fParticleFileMap(0), | |
48 | fParticleBuffer(0), | |
49 | fTreeK(0), | |
50 | fNtrack(0), | |
51 | fNprimary(0), | |
52 | fCurrent(-1), | |
53 | fCurrentPrimary(-1), | |
54 | fHgwmk(0), | |
88cb7938 | 55 | fLoadPoint(0), |
e191bb57 | 56 | fEventFolderName(AliConfig::GetDefaultEventFolderName()) |
9e1a0ddb | 57 | { |
58 | // | |
e2afb3b6 | 59 | // Default constructor |
9e1a0ddb | 60 | // |
9e1a0ddb | 61 | } |
62 | ||
e2afb3b6 | 63 | //_______________________________________________________________________ |
88cb7938 | 64 | AliStack::AliStack(Int_t size, const char* evfoldname): |
e2afb3b6 | 65 | fParticles(new TClonesArray("TParticle",1000)), |
66 | fParticleMap(new TObjArray(size)), | |
67 | fParticleFileMap(0), | |
68 | fParticleBuffer(0), | |
69 | fTreeK(0), | |
70 | fNtrack(0), | |
71 | fNprimary(0), | |
72 | fCurrent(-1), | |
73 | fCurrentPrimary(-1), | |
74 | fHgwmk(0), | |
88cb7938 | 75 | fLoadPoint(0), |
76 | fEventFolderName(evfoldname) | |
e2afb3b6 | 77 | { |
78 | // | |
79 | // Constructor | |
80 | // | |
81 | } | |
9e1a0ddb | 82 | |
e2afb3b6 | 83 | //_______________________________________________________________________ |
84 | AliStack::AliStack(const AliStack& st): | |
85 | TVirtualMCStack(st), | |
86 | fParticles(0), | |
87 | fParticleMap(0), | |
88 | fParticleFileMap(0), | |
89 | fParticleBuffer(0), | |
90 | fTreeK(0), | |
91 | fNtrack(0), | |
92 | fNprimary(0), | |
93 | fCurrent(-1), | |
94 | fCurrentPrimary(-1), | |
95 | fHgwmk(0), | |
96 | fLoadPoint(0) | |
9e1a0ddb | 97 | { |
98 | // | |
e2afb3b6 | 99 | // Copy constructor |
9e1a0ddb | 100 | // |
e2afb3b6 | 101 | st.Copy(*this); |
9e1a0ddb | 102 | } |
103 | ||
e2afb3b6 | 104 | //_______________________________________________________________________ |
6c4904c2 | 105 | void AliStack::Copy(TObject&) const |
e2afb3b6 | 106 | { |
107 | Fatal("Copy","Not implemented!\n"); | |
108 | } | |
9e1a0ddb | 109 | |
e2afb3b6 | 110 | //_______________________________________________________________________ |
9e1a0ddb | 111 | AliStack::~AliStack() |
112 | { | |
113 | // | |
114 | // Destructor | |
115 | // | |
116 | ||
117 | if (fParticles) { | |
118 | fParticles->Delete(); | |
119 | delete fParticles; | |
120 | } | |
121 | delete fParticleMap; | |
88cb7938 | 122 | //PH??? delete fTreeK; |
9e1a0ddb | 123 | } |
124 | ||
125 | // | |
126 | // public methods | |
127 | // | |
128 | ||
129 | //_____________________________________________________________________________ | |
642f15cf | 130 | void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom, |
88cb7938 | 131 | Float_t *vpos, Float_t *polar, Float_t tof, |
132 | TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) | |
9e1a0ddb | 133 | { |
134 | // | |
135 | // Load a track on the stack | |
136 | // | |
137 | // done 0 if the track has to be transported | |
138 | // 1 if not | |
139 | // parent identifier of the parent track. -1 for a primary | |
140 | // pdg particle code | |
141 | // pmom momentum GeV/c | |
142 | // vpos position | |
143 | // polar polarisation | |
144 | // tof time of flight in seconds | |
145 | // mecha production mechanism | |
146 | // ntr on output the number of the track stored | |
147 | // | |
148 | ||
9e1a0ddb | 149 | // const Float_t tlife=0; |
150 | ||
151 | // | |
152 | // Here we get the static mass | |
153 | // For MC is ok, but a more sophisticated method could be necessary | |
154 | // if the calculated mass is required | |
155 | // also, this method is potentially dangerous if the mass | |
156 | // used in the MC is not the same of the PDG database | |
157 | // | |
fe046ade | 158 | TParticlePDG* pmc = TDatabasePDG::Instance()->GetParticle(pdg); |
159 | if (pmc) { | |
160 | Float_t mass = TDatabasePDG::Instance()->GetParticle(pdg)->Mass(); | |
161 | Float_t e=TMath::Sqrt(mass*mass+pmom[0]*pmom[0]+ | |
162 | pmom[1]*pmom[1]+pmom[2]*pmom[2]); | |
163 | ||
ccf7a81f | 164 | // printf("Loading mass %f ene %f No %d ip %d parent %d done %d pos %f %f %f mom %f %f %f kS %d m \n", |
165 | // mass,e,fNtrack,pdg,parent,done,vpos[0],vpos[1],vpos[2],pmom[0],pmom[1],pmom[2],kS); | |
166 | ||
9e1a0ddb | 167 | |
642f15cf | 168 | PushTrack(done, parent, pdg, pmom[0], pmom[1], pmom[2], e, |
fe046ade | 169 | vpos[0], vpos[1], vpos[2], tof, polar[0], polar[1], polar[2], |
170 | mech, ntr, weight, is); | |
171 | } else { | |
642f15cf | 172 | Warning("PushTrack", "Particle type %d not defined in PDG Database !\n", pdg); |
173 | Warning("PushTrack", "Particle skipped !\n"); | |
fe046ade | 174 | } |
9e1a0ddb | 175 | } |
176 | ||
177 | //_____________________________________________________________________________ | |
642f15cf | 178 | void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg, |
9e1a0ddb | 179 | Double_t px, Double_t py, Double_t pz, Double_t e, |
180 | Double_t vx, Double_t vy, Double_t vz, Double_t tof, | |
181 | Double_t polx, Double_t poly, Double_t polz, | |
98490ea9 | 182 | TMCProcess mech, Int_t &ntr, Double_t weight, Int_t is) |
9e1a0ddb | 183 | { |
184 | // | |
185 | // Load a track on the stack | |
186 | // | |
187 | // done 0 if the track has to be transported | |
188 | // 1 if not | |
189 | // parent identifier of the parent track. -1 for a primary | |
190 | // pdg particle code | |
191 | // kS generation status code | |
192 | // px, py, pz momentum GeV/c | |
193 | // vx, vy, vz position | |
194 | // polar polarisation | |
195 | // tof time of flight in seconds | |
196 | // mech production mechanism | |
197 | // ntr on output the number of the track stored | |
198 | // | |
199 | // New method interface: | |
200 | // arguments were changed to be in correspondence with TParticle | |
201 | // constructor. | |
202 | // Note: the energy is not calculated from the static mass but | |
203 | // it is passed by argument e. | |
204 | ||
205 | ||
9e1a0ddb | 206 | const Int_t kFirstDaughter=-1; |
207 | const Int_t kLastDaughter=-1; | |
208 | ||
209 | TClonesArray &particles = *fParticles; | |
210 | TParticle* particle | |
211 | = new(particles[fLoadPoint++]) | |
47c8bcbe | 212 | TParticle(pdg, is, parent, -1, kFirstDaughter, kLastDaughter, |
9e1a0ddb | 213 | px, py, pz, e, vx, vy, vz, tof); |
214 | ||
215 | particle->SetPolarisation(polx, poly, polz); | |
216 | particle->SetWeight(weight); | |
217 | particle->SetUniqueID(mech); | |
218 | ||
219 | if(!done) particle->SetBit(kDoneBit); | |
220 | ||
221 | // Declare that the daughter information is valid | |
222 | particle->SetBit(kDaughtersBit); | |
223 | // Add the particle to the stack | |
224 | fParticleMap->AddAtAndExpand(particle, fNtrack);//CHECK!! | |
225 | ||
226 | if(parent>=0) { | |
e2afb3b6 | 227 | particle = dynamic_cast<TParticle*>(fParticleMap->At(parent)); |
1305ca2f | 228 | if (particle) { |
229 | particle->SetLastDaughter(fNtrack); | |
230 | if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack); | |
231 | } | |
232 | else { | |
642f15cf | 233 | printf("Error in AliStack::PushTrack: Parent %d does not exist\n",parent); |
1305ca2f | 234 | } |
9e1a0ddb | 235 | } |
236 | else { | |
237 | // | |
238 | // This is a primary track. Set high water mark for this event | |
239 | fHgwmk = fNtrack; | |
240 | // | |
241 | // Set also number if primary tracks | |
242 | fNprimary = fHgwmk+1; | |
243 | fCurrentPrimary++; | |
244 | } | |
245 | ntr = fNtrack++; | |
246 | } | |
247 | ||
248 | //_____________________________________________________________________________ | |
642f15cf | 249 | TParticle* AliStack::PopNextTrack(Int_t& itrack) |
b9d0a01d | 250 | { |
251 | // | |
252 | // Returns next track from stack of particles | |
253 | // | |
254 | ||
255 | ||
256 | TParticle* track = GetNextParticle(); | |
257 | ||
258 | if (track) { | |
259 | itrack = fCurrent; | |
260 | track->SetBit(kDoneBit); | |
261 | } | |
fe046ade | 262 | else |
b9d0a01d | 263 | itrack = -1; |
fe046ade | 264 | |
265 | fCurrentTrack = track; | |
b9d0a01d | 266 | return track; |
267 | } | |
268 | ||
b9d0a01d | 269 | //_____________________________________________________________________________ |
642f15cf | 270 | TParticle* AliStack::PopPrimaryForTracking(Int_t i) |
b9d0a01d | 271 | { |
272 | // | |
273 | // Returns i-th primary particle if it is flagged to be tracked, | |
274 | // 0 otherwise | |
275 | // | |
276 | ||
277 | TParticle* particle = Particle(i); | |
278 | ||
279 | if (!particle->TestBit(kDoneBit)) | |
280 | return particle; | |
281 | else | |
282 | return 0; | |
283 | } | |
284 | ||
9e1a0ddb | 285 | //_____________________________________________________________________________ |
286 | void AliStack::PurifyKine() | |
287 | { | |
288 | // | |
289 | // Compress kinematic tree keeping only flagged particles | |
290 | // and renaming the particle id's in all the hits | |
291 | // | |
292 | ||
293 | TObjArray &particles = *fParticleMap; | |
294 | int nkeep=fHgwmk+1, parent, i; | |
295 | TParticle *part, *father; | |
296 | TArrayI map(particles.GetLast()+1); | |
297 | ||
298 | // Save in Header total number of tracks before compression | |
299 | ||
300 | // If no tracks generated return now | |
301 | if(fHgwmk+1 == fNtrack) return; | |
302 | ||
9e1a0ddb | 303 | // First pass, invalid Daughter information |
304 | for(i=0; i<fNtrack; i++) { | |
305 | // Preset map, to be removed later | |
306 | if(i<=fHgwmk) map[i]=i ; | |
307 | else { | |
308 | map[i] = -99; | |
e2afb3b6 | 309 | if((part=dynamic_cast<TParticle*>(particles.At(i)))) { |
e44c5340 | 310 | // |
311 | // Check of this track should be kept for physics reasons | |
88cb7938 | 312 | if (KeepPhysics(part)) KeepTrack(i); |
e44c5340 | 313 | // |
76969085 | 314 | part->ResetBit(kDaughtersBit); |
315 | part->SetFirstDaughter(-1); | |
316 | part->SetLastDaughter(-1); | |
317 | } | |
9e1a0ddb | 318 | } |
319 | } | |
320 | // Invalid daughter information for the parent of the first particle | |
321 | // generated. This may or may not be the current primary according to | |
322 | // whether decays have been recorded among the primaries | |
e2afb3b6 | 323 | part = dynamic_cast<TParticle*>(particles.At(fHgwmk+1)); |
9e1a0ddb | 324 | particles.At(part->GetFirstMother())->ResetBit(kDaughtersBit); |
325 | // Second pass, build map between old and new numbering | |
326 | for(i=fHgwmk+1; i<fNtrack; i++) { | |
327 | if(particles.At(i)->TestBit(kKeepBit)) { | |
328 | ||
329 | // This particle has to be kept | |
330 | map[i]=nkeep; | |
331 | // If old and new are different, have to move the pointer | |
332 | if(i!=nkeep) particles[nkeep]=particles.At(i); | |
e2afb3b6 | 333 | part = dynamic_cast<TParticle*>(particles.At(nkeep)); |
9e1a0ddb | 334 | |
335 | // as the parent is always *before*, it must be already | |
336 | // in place. This is what we are checking anyway! | |
337 | if((parent=part->GetFirstMother())>fHgwmk) | |
338 | if(map[parent]==-99) Fatal("PurifyKine","map[%d] = -99!\n",parent); | |
339 | else part->SetFirstMother(map[parent]); | |
340 | ||
341 | nkeep++; | |
342 | } | |
343 | } | |
344 | ||
345 | // Fix daughters information | |
346 | for (i=fHgwmk+1; i<nkeep; i++) { | |
e2afb3b6 | 347 | part = dynamic_cast<TParticle*>(particles.At(i)); |
9e1a0ddb | 348 | parent = part->GetFirstMother(); |
349 | if(parent>=0) { | |
e2afb3b6 | 350 | father = dynamic_cast<TParticle*>(particles.At(parent)); |
9e1a0ddb | 351 | if(father->TestBit(kDaughtersBit)) { |
352 | ||
353 | if(i<father->GetFirstDaughter()) father->SetFirstDaughter(i); | |
354 | if(i>father->GetLastDaughter()) father->SetLastDaughter(i); | |
355 | } else { | |
356 | // Initialise daughters info for first pass | |
357 | father->SetFirstDaughter(i); | |
358 | father->SetLastDaughter(i); | |
359 | father->SetBit(kDaughtersBit); | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
364 | // Now loop on all registered hit lists | |
5d12ce38 | 365 | TList* hitLists = gAlice->GetMCApp()->GetHitLists(); |
9e1a0ddb | 366 | TIter next(hitLists); |
367 | TCollection *hitList; | |
e2afb3b6 | 368 | while((hitList = dynamic_cast<TCollection*>(next()))) { |
9e1a0ddb | 369 | TIter nexthit(hitList); |
370 | AliHit *hit; | |
e2afb3b6 | 371 | while((hit = dynamic_cast<AliHit*>(nexthit()))) { |
9e1a0ddb | 372 | hit->SetTrack(map[hit->GetTrack()]); |
373 | } | |
374 | } | |
375 | ||
376 | // | |
377 | // This for detectors which have a special mapping mechanism | |
378 | // for hits, such as TPC and TRD | |
379 | // | |
2b22f272 | 380 | |
9e1a0ddb | 381 | TObjArray* modules = gAlice->Modules(); |
382 | TIter nextmod(modules); | |
383 | AliModule *detector; | |
e2afb3b6 | 384 | while((detector = dynamic_cast<AliModule*>(nextmod()))) { |
9e1a0ddb | 385 | detector->RemapTrackHitIDs(map.GetArray()); |
ae9676e4 | 386 | detector->RemapTrackReferencesIDs(map.GetArray()); |
9e1a0ddb | 387 | } |
2b22f272 | 388 | // |
5d12ce38 | 389 | gAlice->GetMCApp()->RemapTrackReferencesIDs(map.GetArray()); |
2b22f272 | 390 | |
9e1a0ddb | 391 | // Now the output bit, from fHgwmk to nkeep we write everything and we erase |
392 | if(nkeep>fParticleFileMap.GetSize()) fParticleFileMap.Set(Int_t (nkeep*1.5)); | |
393 | ||
394 | for (i=fHgwmk+1; i<nkeep; ++i) { | |
e2afb3b6 | 395 | fParticleBuffer = dynamic_cast<TParticle*>(particles.At(i)); |
88cb7938 | 396 | fParticleFileMap[i]=static_cast<Int_t>(TreeK()->GetEntries()); |
397 | TreeK()->Fill(); | |
17f4a3d9 | 398 | particles[i]=fParticleBuffer=0; |
88cb7938 | 399 | } |
9e1a0ddb | 400 | |
401 | for (i=nkeep; i<fNtrack; ++i) particles[i]=0; | |
402 | ||
76969085 | 403 | Int_t toshrink = fNtrack-fHgwmk-1; |
9e1a0ddb | 404 | fLoadPoint-=toshrink; |
405 | for(i=fLoadPoint; i<fLoadPoint+toshrink; ++i) fParticles->RemoveAt(i); | |
406 | ||
407 | fNtrack=nkeep; | |
408 | fHgwmk=nkeep-1; | |
409 | // delete [] map; | |
410 | } | |
411 | ||
e44c5340 | 412 | Bool_t AliStack::KeepPhysics(TParticle* part) |
413 | { | |
414 | // | |
415 | // Some particles have to kept on the stack for reasons motivated | |
416 | // by physics analysis. Decision is put here. | |
417 | // | |
418 | Bool_t keep = kFALSE; | |
419 | // | |
420 | // Keep first-generation daughter from primaries with heavy flavor | |
421 | // | |
422 | Int_t parent = part->GetFirstMother(); | |
423 | if (parent >= 0 && parent <= fHgwmk) { | |
e2afb3b6 | 424 | TParticle* father = dynamic_cast<TParticle*>(Particles()->At(parent)); |
e44c5340 | 425 | Int_t kf = father->GetPdgCode(); |
426 | kf = TMath::Abs(kf); | |
427 | Int_t kfl = kf; | |
428 | // meson ? | |
429 | if (kfl > 10) kfl/=100; | |
430 | // baryon | |
431 | if (kfl > 10) kfl/=10; | |
432 | if (kfl > 10) kfl/=10; | |
433 | if (kfl >= 4) { | |
434 | keep = kTRUE; | |
435 | } | |
436 | } | |
437 | return keep; | |
438 | } | |
439 | ||
9e1a0ddb | 440 | //_____________________________________________________________________________ |
441 | void AliStack::FinishEvent() | |
442 | { | |
88cb7938 | 443 | // |
444 | // Write out the kinematics that was not yet filled | |
445 | // | |
9e1a0ddb | 446 | |
88cb7938 | 447 | // Update event header |
9e1a0ddb | 448 | |
449 | ||
88cb7938 | 450 | if (!TreeK()) { |
9e1a0ddb | 451 | // Fatal("FinishEvent", "No kinematics tree is defined."); |
452 | // Don't panic this is a probably a lego run | |
453 | return; | |
9e1a0ddb | 454 | } |
455 | ||
456 | CleanParents(); | |
88cb7938 | 457 | if(TreeK()->GetEntries() ==0) { |
9e1a0ddb | 458 | // set the fParticleFileMap size for the first time |
459 | fParticleFileMap.Set(fHgwmk+1); | |
460 | } | |
461 | ||
462 | Bool_t allFilled = kFALSE; | |
463 | TObject *part; | |
464 | for(Int_t i=0; i<fHgwmk+1; ++i) | |
465 | if((part=fParticleMap->At(i))) { | |
e2afb3b6 | 466 | fParticleBuffer = dynamic_cast<TParticle*>(part); |
88cb7938 | 467 | fParticleFileMap[i]= static_cast<Int_t>(TreeK()->GetEntries()); |
468 | TreeK()->Fill(); | |
da2af24c | 469 | //PH (*fParticleMap)[i]=fParticleBuffer=0; |
470 | fParticleBuffer=0; | |
471 | fParticleMap->AddAt(0,i); | |
9e1a0ddb | 472 | |
473 | // When all primaries were filled no particle!=0 | |
474 | // should be left => to be removed later. | |
475 | if (allFilled) printf("Why != 0 part # %d?\n",i); | |
476 | } | |
88cb7938 | 477 | else |
478 | { | |
9e1a0ddb | 479 | // // printf("Why = 0 part # %d?\n",i); => We know. |
480 | // break; | |
88cb7938 | 481 | // we don't break now in order to be sure there is no |
482 | // particle !=0 left. | |
483 | // To be removed later and replaced with break. | |
484 | if(!allFilled) allFilled = kTRUE; | |
485 | } | |
9e1a0ddb | 486 | } |
9e1a0ddb | 487 | //_____________________________________________________________________________ |
88cb7938 | 488 | |
9e1a0ddb | 489 | void AliStack::FlagTrack(Int_t track) |
490 | { | |
491 | // | |
492 | // Flags a track and all its family tree to be kept | |
493 | // | |
494 | ||
495 | TParticle *particle; | |
496 | ||
497 | Int_t curr=track; | |
498 | while(1) { | |
e2afb3b6 | 499 | particle=dynamic_cast<TParticle*>(fParticleMap->At(curr)); |
9e1a0ddb | 500 | |
501 | // If the particle is flagged the three from here upward is saved already | |
502 | if(particle->TestBit(kKeepBit)) return; | |
503 | ||
504 | // Save this particle | |
505 | particle->SetBit(kKeepBit); | |
506 | ||
507 | // Move to father if any | |
508 | if((curr=particle->GetFirstMother())==-1) return; | |
509 | } | |
510 | } | |
511 | ||
512 | //_____________________________________________________________________________ | |
ed54bf31 | 513 | void AliStack::KeepTrack(Int_t track) |
9e1a0ddb | 514 | { |
515 | // | |
516 | // Flags a track to be kept | |
517 | // | |
518 | ||
519 | fParticleMap->At(track)->SetBit(kKeepBit); | |
520 | } | |
521 | ||
522 | //_____________________________________________________________________________ | |
523 | void AliStack::Reset(Int_t size) | |
524 | { | |
525 | // | |
526 | // Resets stack | |
527 | // | |
88cb7938 | 528 | |
9e1a0ddb | 529 | fNtrack=0; |
530 | fNprimary=0; | |
531 | fHgwmk=0; | |
532 | fLoadPoint=0; | |
533 | fCurrent = -1; | |
88cb7938 | 534 | fTreeK = 0x0; |
9e1a0ddb | 535 | ResetArrays(size); |
536 | } | |
537 | ||
538 | //_____________________________________________________________________________ | |
539 | void AliStack::ResetArrays(Int_t size) | |
540 | { | |
541 | // | |
542 | // Resets stack arrays | |
543 | // | |
544 | ||
be3380a3 | 545 | if (fParticles) |
546 | fParticles->Clear(); | |
547 | else | |
548 | fParticles = new TClonesArray("TParticle",1000); | |
549 | if (fParticleMap) { | |
550 | fParticleMap->Clear(); | |
551 | if (size>0) fParticleMap->Expand(size);} | |
552 | else | |
553 | fParticleMap = new TObjArray(size); | |
9e1a0ddb | 554 | } |
555 | ||
556 | //_____________________________________________________________________________ | |
e2afb3b6 | 557 | void AliStack::SetHighWaterMark(Int_t) |
9e1a0ddb | 558 | { |
559 | // | |
560 | // Set high water mark for last track in event | |
561 | // | |
562 | ||
563 | fHgwmk = fNtrack-1; | |
564 | fCurrentPrimary=fHgwmk; | |
565 | ||
566 | // Set also number of primary tracks | |
567 | fNprimary = fHgwmk+1; | |
568 | fNtrack = fHgwmk+1; | |
569 | } | |
570 | ||
571 | //_____________________________________________________________________________ | |
572 | TParticle* AliStack::Particle(Int_t i) | |
573 | { | |
574 | // | |
575 | // Return particle with specified ID | |
576 | ||
da2af24c | 577 | //PH if(!(*fParticleMap)[i]) { |
578 | if(!fParticleMap->At(i)) { | |
911a3148 | 579 | Int_t nentries = fParticles->GetEntriesFast(); |
9e1a0ddb | 580 | // algorithmic way of getting entry index |
581 | // (primary particles are filled after secondaries) | |
e94530da | 582 | Int_t entry = TreeKEntry(i); |
9e1a0ddb | 583 | // check whether algorithmic way and |
584 | // and the fParticleFileMap[i] give the same; | |
585 | // give the fatal error if not | |
586 | if (entry != fParticleFileMap[i]) { | |
587 | Fatal("Particle", | |
588 | "!! The algorithmic way and map are different: !!\n entry: %d map: %d", | |
589 | entry, fParticleFileMap[i]); | |
590 | } | |
591 | ||
88cb7938 | 592 | TreeK()->GetEntry(entry); |
9e1a0ddb | 593 | new ((*fParticles)[nentries]) TParticle(*fParticleBuffer); |
594 | fParticleMap->AddAt((*fParticles)[nentries],i); | |
595 | } | |
e2afb3b6 | 596 | //PH return dynamic_cast<TParticle *>((*fParticleMap)[i]); |
597 | return dynamic_cast<TParticle*>(fParticleMap->At(i)); | |
9e1a0ddb | 598 | } |
599 | ||
e94530da | 600 | //_____________________________________________________________________________ |
601 | TParticle* AliStack::ParticleFromTreeK(Int_t id) const | |
602 | { | |
603 | // | |
604 | // return pointer to TParticle with label id | |
605 | // | |
606 | Int_t entry; | |
607 | if ((entry = TreeKEntry(id)) < 0) return 0; | |
608 | if (fTreeK->GetEntry(entry)<=0) return 0; | |
609 | return fParticleBuffer; | |
610 | } | |
611 | ||
612 | //_____________________________________________________________________________ | |
613 | Int_t AliStack::TreeKEntry(Int_t id) const | |
614 | { | |
615 | // | |
616 | // return entry number in the TreeK for particle with label id | |
617 | // return negative number if label>fNtrack | |
618 | // | |
619 | Int_t entry; | |
620 | if (id<fNprimary) | |
621 | entry = id+fNtrack-fNprimary; | |
622 | else | |
623 | entry = id-fNprimary; | |
624 | return entry; | |
625 | } | |
626 | ||
5d8718b8 | 627 | //_____________________________________________________________________________ |
642f15cf | 628 | Int_t AliStack::GetCurrentParentTrackNumber() const |
5d8718b8 | 629 | { |
630 | // | |
631 | // Return number of the parent of the current track | |
632 | // | |
633 | ||
634 | TParticle* current = (TParticle*)fParticleMap->At(fCurrent); | |
635 | ||
636 | if (current) | |
637 | return current->GetFirstMother(); | |
638 | else { | |
642f15cf | 639 | Warning("GetCurrentParentTrackNumber", "Current track not found in the stack"); |
5d8718b8 | 640 | return -1; |
641 | } | |
642 | } | |
643 | ||
9e1a0ddb | 644 | //_____________________________________________________________________________ |
f5f55563 | 645 | Int_t AliStack::GetPrimary(Int_t id) |
9e1a0ddb | 646 | { |
647 | // | |
648 | // Return number of primary that has generated track | |
649 | // | |
650 | ||
651 | int current, parent; | |
9e1a0ddb | 652 | // |
653 | parent=id; | |
654 | while (1) { | |
655 | current=parent; | |
f5f55563 | 656 | parent=Particle(current)->GetFirstMother(); |
9e1a0ddb | 657 | if(parent<0) return current; |
658 | } | |
659 | } | |
660 | ||
661 | //_____________________________________________________________________________ | |
662 | void AliStack::DumpPart (Int_t i) const | |
663 | { | |
664 | // | |
665 | // Dumps particle i in the stack | |
666 | // | |
667 | ||
e2afb3b6 | 668 | //PH dynamic_cast<TParticle*>((*fParticleMap)[i])->Print(); |
669 | dynamic_cast<TParticle*>(fParticleMap->At(i))->Print(); | |
9e1a0ddb | 670 | } |
671 | ||
672 | //_____________________________________________________________________________ | |
673 | void AliStack::DumpPStack () | |
674 | { | |
675 | // | |
676 | // Dumps the particle stack | |
677 | // | |
678 | ||
3ab6f951 | 679 | Int_t i; |
680 | ||
88cb7938 | 681 | printf("\n\n=======================================================================\n"); |
3ab6f951 | 682 | for (i=0;i<fNtrack;i++) |
9e1a0ddb | 683 | { |
684 | TParticle* particle = Particle(i); | |
685 | if (particle) { | |
686 | printf("-> %d ",i); particle->Print(); | |
687 | printf("--------------------------------------------------------------\n"); | |
688 | } | |
689 | else | |
690 | Warning("DumpPStack", "No particle with id %d.", i); | |
691 | } | |
692 | ||
88cb7938 | 693 | printf("\n=======================================================================\n\n"); |
9e1a0ddb | 694 | |
695 | // print particle file map | |
696 | printf("\nParticle file map: \n"); | |
3ab6f951 | 697 | for (i=0; i<fNtrack; i++) |
9e1a0ddb | 698 | printf(" %d th entry: %d \n",i,fParticleFileMap[i]); |
699 | } | |
700 | ||
701 | ||
702 | //_____________________________________________________________________________ | |
703 | void AliStack::DumpLoadedStack() const | |
704 | { | |
705 | // | |
706 | // Dumps the particle in the stack | |
707 | // that are loaded in memory. | |
708 | // | |
709 | ||
710 | TObjArray &particles = *fParticleMap; | |
711 | printf( | |
712 | "\n\n=======================================================================\n"); | |
713 | for (Int_t i=0;i<fNtrack;i++) | |
714 | { | |
e2afb3b6 | 715 | TParticle* particle = dynamic_cast<TParticle*>(particles[i]); |
9e1a0ddb | 716 | if (particle) { |
717 | printf("-> %d ",i); particle->Print(); | |
718 | printf("--------------------------------------------------------------\n"); | |
719 | } | |
720 | else { | |
721 | printf("-> %d Particle not loaded.\n",i); | |
722 | printf("--------------------------------------------------------------\n"); | |
723 | } | |
724 | } | |
725 | printf( | |
726 | "\n=======================================================================\n\n"); | |
727 | } | |
728 | ||
729 | // | |
730 | // protected methods | |
731 | // | |
732 | ||
733 | //_____________________________________________________________________________ | |
734 | void AliStack::CleanParents() | |
735 | { | |
736 | // | |
737 | // Clean particles stack | |
738 | // Set parent/daughter relations | |
739 | // | |
740 | ||
741 | TObjArray &particles = *fParticleMap; | |
742 | TParticle *part; | |
743 | int i; | |
744 | for(i=0; i<fHgwmk+1; i++) { | |
e2afb3b6 | 745 | part = dynamic_cast<TParticle*>(particles.At(i)); |
9e1a0ddb | 746 | if(part) if(!part->TestBit(kDaughtersBit)) { |
747 | part->SetFirstDaughter(-1); | |
748 | part->SetLastDaughter(-1); | |
749 | } | |
750 | } | |
751 | } | |
752 | ||
753 | //_____________________________________________________________________________ | |
754 | TParticle* AliStack::GetNextParticle() | |
755 | { | |
756 | // | |
757 | // Return next particle from stack of particles | |
758 | // | |
759 | ||
760 | TParticle* particle = 0; | |
761 | ||
762 | // search secondaries | |
763 | //for(Int_t i=fNtrack-1; i>=0; i--) { | |
764 | for(Int_t i=fNtrack-1; i>fHgwmk; i--) { | |
e2afb3b6 | 765 | particle = dynamic_cast<TParticle*>(fParticleMap->At(i)); |
9e1a0ddb | 766 | if ((particle) && (!particle->TestBit(kDoneBit))) { |
767 | fCurrent=i; | |
9e1a0ddb | 768 | return particle; |
769 | } | |
770 | } | |
771 | ||
772 | // take next primary if all secondaries were done | |
773 | while (fCurrentPrimary>=0) { | |
774 | fCurrent = fCurrentPrimary; | |
e2afb3b6 | 775 | particle = dynamic_cast<TParticle*>(fParticleMap->At(fCurrentPrimary--)); |
9e1a0ddb | 776 | if ((particle) && (!particle->TestBit(kDoneBit))) { |
9e1a0ddb | 777 | return particle; |
778 | } | |
779 | } | |
780 | ||
781 | // nothing to be tracked | |
782 | fCurrent = -1; | |
9e1a0ddb | 783 | return particle; |
784 | } | |
88cb7938 | 785 | //__________________________________________________________________________________________ |
9e1a0ddb | 786 | |
88cb7938 | 787 | TTree* AliStack::TreeK() |
788 | { | |
789 | //returns TreeK | |
790 | if (fTreeK) | |
791 | { | |
792 | return fTreeK; | |
793 | } | |
794 | else | |
795 | { | |
796 | AliRunLoader *rl = AliRunLoader::GetRunLoader(fEventFolderName); | |
797 | if (rl == 0x0) | |
798 | { | |
799 | Fatal("TreeK","Can not get RunLoader from event folder named %s",fEventFolderName.Data()); | |
800 | return 0x0;//pro forma | |
801 | } | |
802 | fTreeK = rl->TreeK(); | |
504b172d | 803 | if ( fTreeK ) |
88cb7938 | 804 | { |
504b172d | 805 | ConnectTree(); |
88cb7938 | 806 | } |
807 | else | |
808 | { | |
504b172d | 809 | //don't panic - could be Lego |
d0d4a6b3 | 810 | if (AliLoader::GetDebug()) |
504b172d | 811 | { |
812 | Warning("TreeK","Can not get TreeK from RL. Ev. Folder is %s",fEventFolderName.Data()); | |
813 | } | |
88cb7938 | 814 | } |
815 | } | |
816 | return fTreeK;//never reached | |
817 | } | |
9e1a0ddb | 818 | //__________________________________________________________________________________________ |
88cb7938 | 819 | |
820 | void AliStack::ConnectTree() | |
9e1a0ddb | 821 | { |
822 | // | |
88cb7938 | 823 | // Creates branch for writing particles |
824 | // | |
d0d4a6b3 | 825 | if (AliLoader::GetDebug()) Info("ConnectTree","Connecting TreeK"); |
88cb7938 | 826 | if (fTreeK == 0x0) |
827 | { | |
828 | if (TreeK() == 0x0) | |
829 | { | |
830 | Fatal("ConnectTree","Parameter is NULL");//we don't like such a jokes | |
831 | return; | |
832 | } | |
833 | return;//in this case TreeK() calls back this method (ConnectTree) | |
834 | //tree after setting fTreeK, the rest was already executed | |
835 | //it is safe to return now | |
836 | } | |
837 | ||
838 | // Create a branch for particles | |
839 | ||
d0d4a6b3 | 840 | if (AliLoader::GetDebug()) |
88cb7938 | 841 | Info("ConnectTree","Tree name is %s",fTreeK->GetName()); |
842 | ||
843 | if (fTreeK->GetDirectory()) | |
844 | { | |
d0d4a6b3 | 845 | if (AliLoader::GetDebug()) |
88cb7938 | 846 | Info("ConnectTree","and dir is %s",fTreeK->GetDirectory()->GetName()); |
847 | } | |
848 | else | |
849 | Warning("ConnectTree","DIR IS NOT SET !!!"); | |
850 | ||
024a7e64 | 851 | TBranch *branch=fTreeK->GetBranch(AliRunLoader::GetKineBranchName()); |
88cb7938 | 852 | if(branch == 0x0) |
853 | { | |
024a7e64 | 854 | branch = fTreeK->Branch(AliRunLoader::GetKineBranchName(), "TParticle", &fParticleBuffer, 4000); |
d0d4a6b3 | 855 | if (AliLoader::GetDebug()) Info("ConnectTree","Creating Branch in Tree"); |
88cb7938 | 856 | } |
857 | else | |
858 | { | |
d0d4a6b3 | 859 | if (AliLoader::GetDebug()) Info("ConnectTree","Branch Found in Tree"); |
88cb7938 | 860 | branch->SetAddress(&fParticleBuffer); |
861 | } | |
862 | if (branch->GetDirectory()) | |
863 | { | |
d0d4a6b3 | 864 | if (AliLoader::GetDebug()) |
88cb7938 | 865 | Info("ConnectTree","Branch Dir Name is %s",branch->GetDirectory()->GetName()); |
866 | } | |
867 | else | |
868 | Warning("ConnectTree","Branch Dir is NOT SET"); | |
9e1a0ddb | 869 | } |
88cb7938 | 870 | //__________________________________________________________________________________________ |
9e1a0ddb | 871 | |
88cb7938 | 872 | |
873 | void AliStack::BeginEvent() | |
9e1a0ddb | 874 | { |
875 | // start a new event | |
88cb7938 | 876 | Reset(); |
9e1a0ddb | 877 | } |
878 | ||
81694e6a | 879 | //_____________________________________________________________________________ |
9e1a0ddb | 880 | void AliStack::FinishRun() |
881 | { | |
882 | // Clean TreeK information | |
9e1a0ddb | 883 | } |
5d8718b8 | 884 | //_____________________________________________________________________________ |
88cb7938 | 885 | |
886 | Bool_t AliStack::GetEvent() | |
9e1a0ddb | 887 | { |
888 | // | |
889 | // Get new event from TreeK | |
ccf7a81f | 890 | |
9e1a0ddb | 891 | // Reset/Create the particle stack |
88cb7938 | 892 | fTreeK = 0x0; |
9e1a0ddb | 893 | |
88cb7938 | 894 | if (TreeK() == 0x0) //forces connecting |
895 | { | |
896 | Error("GetEvent","cannot find Kine Tree for current event\n"); | |
ccf7a81f | 897 | return kFALSE; |
88cb7938 | 898 | } |
ccf7a81f | 899 | |
88cb7938 | 900 | Int_t size = (Int_t)TreeK()->GetEntries(); |
9e1a0ddb | 901 | ResetArrays(size); |
ccf7a81f | 902 | return kTRUE; |
9e1a0ddb | 903 | } |
88cb7938 | 904 | //_____________________________________________________________________________ |
905 | ||
906 | void AliStack::SetEventFolderName(const char* foldname) | |
907 | { | |
908 | //Sets event folder name | |
909 | fEventFolderName = foldname; | |
910 | } |