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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 | |
21bf7095 | 34 | #include "AliLog.h" |
9e1a0ddb | 35 | #include "AliHit.h" |
88cb7938 | 36 | #include "AliModule.h" |
37 | #include "AliRun.h" | |
5d12ce38 | 38 | #include "AliMC.h" |
88cb7938 | 39 | #include "AliRunLoader.h" |
40 | #include "AliStack.h" | |
9e1a0ddb | 41 | |
42 | ClassImp(AliStack) | |
43 | ||
e2afb3b6 | 44 | //_______________________________________________________________________ |
45 | AliStack::AliStack(): | |
46 | fParticles(0), | |
47 | fParticleMap(0), | |
48 | fParticleFileMap(0), | |
49 | fParticleBuffer(0), | |
90e48c0c | 50 | fCurrentTrack(0), |
e2afb3b6 | 51 | fTreeK(0), |
52 | fNtrack(0), | |
53 | fNprimary(0), | |
54 | fCurrent(-1), | |
55 | fCurrentPrimary(-1), | |
56 | fHgwmk(0), | |
88cb7938 | 57 | fLoadPoint(0), |
e191bb57 | 58 | fEventFolderName(AliConfig::GetDefaultEventFolderName()) |
9e1a0ddb | 59 | { |
60 | // | |
e2afb3b6 | 61 | // Default constructor |
9e1a0ddb | 62 | // |
9e1a0ddb | 63 | } |
64 | ||
e2afb3b6 | 65 | //_______________________________________________________________________ |
88cb7938 | 66 | AliStack::AliStack(Int_t size, const char* evfoldname): |
e2afb3b6 | 67 | fParticles(new TClonesArray("TParticle",1000)), |
68 | fParticleMap(new TObjArray(size)), | |
69 | fParticleFileMap(0), | |
70 | fParticleBuffer(0), | |
90e48c0c | 71 | fCurrentTrack(0), |
e2afb3b6 | 72 | fTreeK(0), |
73 | fNtrack(0), | |
74 | fNprimary(0), | |
75 | fCurrent(-1), | |
76 | fCurrentPrimary(-1), | |
77 | fHgwmk(0), | |
88cb7938 | 78 | fLoadPoint(0), |
79 | fEventFolderName(evfoldname) | |
e2afb3b6 | 80 | { |
81 | // | |
82 | // Constructor | |
83 | // | |
84 | } | |
9e1a0ddb | 85 | |
e2afb3b6 | 86 | //_______________________________________________________________________ |
87 | AliStack::AliStack(const AliStack& st): | |
88 | TVirtualMCStack(st), | |
89 | fParticles(0), | |
90 | fParticleMap(0), | |
91 | fParticleFileMap(0), | |
92 | fParticleBuffer(0), | |
90e48c0c | 93 | fCurrentTrack(0), |
e2afb3b6 | 94 | fTreeK(0), |
95 | fNtrack(0), | |
96 | fNprimary(0), | |
97 | fCurrent(-1), | |
98 | fCurrentPrimary(-1), | |
99 | fHgwmk(0), | |
90e48c0c | 100 | fLoadPoint(0), |
101 | fEventFolderName() | |
9e1a0ddb | 102 | { |
103 | // | |
e2afb3b6 | 104 | // Copy constructor |
9e1a0ddb | 105 | // |
e2afb3b6 | 106 | st.Copy(*this); |
9e1a0ddb | 107 | } |
108 | ||
e2afb3b6 | 109 | //_______________________________________________________________________ |
6c4904c2 | 110 | void AliStack::Copy(TObject&) const |
e2afb3b6 | 111 | { |
21bf7095 | 112 | AliFatal("Not implemented!"); |
e2afb3b6 | 113 | } |
9e1a0ddb | 114 | |
e2afb3b6 | 115 | //_______________________________________________________________________ |
9e1a0ddb | 116 | AliStack::~AliStack() |
117 | { | |
118 | // | |
119 | // Destructor | |
120 | // | |
121 | ||
122 | if (fParticles) { | |
123 | fParticles->Delete(); | |
124 | delete fParticles; | |
125 | } | |
126 | delete fParticleMap; | |
88cb7938 | 127 | //PH??? delete fTreeK; |
9e1a0ddb | 128 | } |
129 | ||
130 | // | |
131 | // public methods | |
132 | // | |
133 | ||
134 | //_____________________________________________________________________________ | |
642f15cf | 135 | void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom, |
88cb7938 | 136 | Float_t *vpos, Float_t *polar, Float_t tof, |
137 | TMCProcess mech, Int_t &ntr, Float_t weight, Int_t is) | |
9e1a0ddb | 138 | { |
139 | // | |
140 | // Load a track on the stack | |
141 | // | |
142 | // done 0 if the track has to be transported | |
143 | // 1 if not | |
144 | // parent identifier of the parent track. -1 for a primary | |
145 | // pdg particle code | |
146 | // pmom momentum GeV/c | |
147 | // vpos position | |
148 | // polar polarisation | |
149 | // tof time of flight in seconds | |
150 | // mecha production mechanism | |
151 | // ntr on output the number of the track stored | |
152 | // | |
153 | ||
9e1a0ddb | 154 | // const Float_t tlife=0; |
155 | ||
156 | // | |
157 | // Here we get the static mass | |
158 | // For MC is ok, but a more sophisticated method could be necessary | |
159 | // if the calculated mass is required | |
160 | // also, this method is potentially dangerous if the mass | |
161 | // used in the MC is not the same of the PDG database | |
162 | // | |
fe046ade | 163 | TParticlePDG* pmc = TDatabasePDG::Instance()->GetParticle(pdg); |
164 | if (pmc) { | |
165 | Float_t mass = TDatabasePDG::Instance()->GetParticle(pdg)->Mass(); | |
166 | Float_t e=TMath::Sqrt(mass*mass+pmom[0]*pmom[0]+ | |
167 | pmom[1]*pmom[1]+pmom[2]*pmom[2]); | |
168 | ||
ccf7a81f | 169 | // 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", |
170 | // mass,e,fNtrack,pdg,parent,done,vpos[0],vpos[1],vpos[2],pmom[0],pmom[1],pmom[2],kS); | |
171 | ||
9e1a0ddb | 172 | |
642f15cf | 173 | PushTrack(done, parent, pdg, pmom[0], pmom[1], pmom[2], e, |
fe046ade | 174 | vpos[0], vpos[1], vpos[2], tof, polar[0], polar[1], polar[2], |
175 | mech, ntr, weight, is); | |
176 | } else { | |
21bf7095 | 177 | AliWarning(Form("Particle type %d not defined in PDG Database !", pdg)); |
178 | AliWarning("Particle skipped !"); | |
fe046ade | 179 | } |
9e1a0ddb | 180 | } |
181 | ||
182 | //_____________________________________________________________________________ | |
642f15cf | 183 | void AliStack::PushTrack(Int_t done, Int_t parent, Int_t pdg, |
9e1a0ddb | 184 | Double_t px, Double_t py, Double_t pz, Double_t e, |
185 | Double_t vx, Double_t vy, Double_t vz, Double_t tof, | |
186 | Double_t polx, Double_t poly, Double_t polz, | |
98490ea9 | 187 | TMCProcess mech, Int_t &ntr, Double_t weight, Int_t is) |
9e1a0ddb | 188 | { |
189 | // | |
190 | // Load a track on the stack | |
191 | // | |
192 | // done 0 if the track has to be transported | |
193 | // 1 if not | |
194 | // parent identifier of the parent track. -1 for a primary | |
195 | // pdg particle code | |
196 | // kS generation status code | |
197 | // px, py, pz momentum GeV/c | |
198 | // vx, vy, vz position | |
199 | // polar polarisation | |
200 | // tof time of flight in seconds | |
201 | // mech production mechanism | |
202 | // ntr on output the number of the track stored | |
203 | // | |
204 | // New method interface: | |
205 | // arguments were changed to be in correspondence with TParticle | |
206 | // constructor. | |
207 | // Note: the energy is not calculated from the static mass but | |
208 | // it is passed by argument e. | |
209 | ||
210 | ||
9e1a0ddb | 211 | const Int_t kFirstDaughter=-1; |
212 | const Int_t kLastDaughter=-1; | |
6308b375 | 213 | |
214 | ||
9e1a0ddb | 215 | TClonesArray &particles = *fParticles; |
216 | TParticle* particle | |
217 | = new(particles[fLoadPoint++]) | |
47c8bcbe | 218 | TParticle(pdg, is, parent, -1, kFirstDaughter, kLastDaughter, |
9e1a0ddb | 219 | px, py, pz, e, vx, vy, vz, tof); |
220 | ||
221 | particle->SetPolarisation(polx, poly, polz); | |
222 | particle->SetWeight(weight); | |
223 | particle->SetUniqueID(mech); | |
224 | ||
225 | if(!done) particle->SetBit(kDoneBit); | |
226 | ||
227 | // Declare that the daughter information is valid | |
228 | particle->SetBit(kDaughtersBit); | |
229 | // Add the particle to the stack | |
6308b375 | 230 | |
231 | ||
9e1a0ddb | 232 | fParticleMap->AddAtAndExpand(particle, fNtrack);//CHECK!! |
233 | ||
234 | if(parent>=0) { | |
e2afb3b6 | 235 | particle = dynamic_cast<TParticle*>(fParticleMap->At(parent)); |
1305ca2f | 236 | if (particle) { |
237 | particle->SetLastDaughter(fNtrack); | |
238 | if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack); | |
239 | } | |
240 | else { | |
21bf7095 | 241 | AliError(Form("Parent %d does not exist",parent)); |
1305ca2f | 242 | } |
9e1a0ddb | 243 | } |
244 | else { | |
245 | // | |
246 | // This is a primary track. Set high water mark for this event | |
247 | fHgwmk = fNtrack; | |
248 | // | |
249 | // Set also number if primary tracks | |
250 | fNprimary = fHgwmk+1; | |
251 | fCurrentPrimary++; | |
252 | } | |
253 | ntr = fNtrack++; | |
254 | } | |
255 | ||
256 | //_____________________________________________________________________________ | |
642f15cf | 257 | TParticle* AliStack::PopNextTrack(Int_t& itrack) |
b9d0a01d | 258 | { |
259 | // | |
260 | // Returns next track from stack of particles | |
261 | // | |
262 | ||
263 | ||
264 | TParticle* track = GetNextParticle(); | |
265 | ||
266 | if (track) { | |
267 | itrack = fCurrent; | |
268 | track->SetBit(kDoneBit); | |
269 | } | |
fe046ade | 270 | else |
b9d0a01d | 271 | itrack = -1; |
fe046ade | 272 | |
273 | fCurrentTrack = track; | |
b9d0a01d | 274 | return track; |
275 | } | |
276 | ||
b9d0a01d | 277 | //_____________________________________________________________________________ |
642f15cf | 278 | TParticle* AliStack::PopPrimaryForTracking(Int_t i) |
b9d0a01d | 279 | { |
280 | // | |
281 | // Returns i-th primary particle if it is flagged to be tracked, | |
282 | // 0 otherwise | |
283 | // | |
284 | ||
285 | TParticle* particle = Particle(i); | |
286 | ||
287 | if (!particle->TestBit(kDoneBit)) | |
288 | return particle; | |
289 | else | |
290 | return 0; | |
291 | } | |
292 | ||
9e1a0ddb | 293 | //_____________________________________________________________________________ |
294 | void AliStack::PurifyKine() | |
295 | { | |
296 | // | |
297 | // Compress kinematic tree keeping only flagged particles | |
298 | // and renaming the particle id's in all the hits | |
299 | // | |
300 | ||
301 | TObjArray &particles = *fParticleMap; | |
302 | int nkeep=fHgwmk+1, parent, i; | |
303 | TParticle *part, *father; | |
304 | TArrayI map(particles.GetLast()+1); | |
305 | ||
306 | // Save in Header total number of tracks before compression | |
9e1a0ddb | 307 | // If no tracks generated return now |
308 | if(fHgwmk+1 == fNtrack) return; | |
309 | ||
9e1a0ddb | 310 | // First pass, invalid Daughter information |
6308b375 | 311 | |
9e1a0ddb | 312 | for(i=0; i<fNtrack; i++) { |
313 | // Preset map, to be removed later | |
314 | if(i<=fHgwmk) map[i]=i ; | |
315 | else { | |
316 | map[i] = -99; | |
e2afb3b6 | 317 | if((part=dynamic_cast<TParticle*>(particles.At(i)))) { |
e44c5340 | 318 | // |
319 | // Check of this track should be kept for physics reasons | |
88cb7938 | 320 | if (KeepPhysics(part)) KeepTrack(i); |
e44c5340 | 321 | // |
76969085 | 322 | part->ResetBit(kDaughtersBit); |
323 | part->SetFirstDaughter(-1); | |
324 | part->SetLastDaughter(-1); | |
325 | } | |
9e1a0ddb | 326 | } |
327 | } | |
328 | // Invalid daughter information for the parent of the first particle | |
329 | // generated. This may or may not be the current primary according to | |
330 | // whether decays have been recorded among the primaries | |
e2afb3b6 | 331 | part = dynamic_cast<TParticle*>(particles.At(fHgwmk+1)); |
9e1a0ddb | 332 | particles.At(part->GetFirstMother())->ResetBit(kDaughtersBit); |
333 | // Second pass, build map between old and new numbering | |
334 | for(i=fHgwmk+1; i<fNtrack; i++) { | |
335 | if(particles.At(i)->TestBit(kKeepBit)) { | |
336 | ||
337 | // This particle has to be kept | |
338 | map[i]=nkeep; | |
339 | // If old and new are different, have to move the pointer | |
340 | if(i!=nkeep) particles[nkeep]=particles.At(i); | |
e2afb3b6 | 341 | part = dynamic_cast<TParticle*>(particles.At(nkeep)); |
9e1a0ddb | 342 | |
343 | // as the parent is always *before*, it must be already | |
344 | // in place. This is what we are checking anyway! | |
345 | if((parent=part->GetFirstMother())>fHgwmk) | |
346 | if(map[parent]==-99) Fatal("PurifyKine","map[%d] = -99!\n",parent); | |
347 | else part->SetFirstMother(map[parent]); | |
348 | ||
349 | nkeep++; | |
350 | } | |
351 | } | |
352 | ||
353 | // Fix daughters information | |
354 | for (i=fHgwmk+1; i<nkeep; i++) { | |
e2afb3b6 | 355 | part = dynamic_cast<TParticle*>(particles.At(i)); |
9e1a0ddb | 356 | parent = part->GetFirstMother(); |
357 | if(parent>=0) { | |
e2afb3b6 | 358 | father = dynamic_cast<TParticle*>(particles.At(parent)); |
9e1a0ddb | 359 | if(father->TestBit(kDaughtersBit)) { |
360 | ||
361 | if(i<father->GetFirstDaughter()) father->SetFirstDaughter(i); | |
362 | if(i>father->GetLastDaughter()) father->SetLastDaughter(i); | |
363 | } else { | |
364 | // Initialise daughters info for first pass | |
365 | father->SetFirstDaughter(i); | |
366 | father->SetLastDaughter(i); | |
367 | father->SetBit(kDaughtersBit); | |
368 | } | |
369 | } | |
370 | } | |
a1d92a3f | 371 | |
9e1a0ddb | 372 | |
373 | // Now loop on all registered hit lists | |
5d12ce38 | 374 | TList* hitLists = gAlice->GetMCApp()->GetHitLists(); |
9e1a0ddb | 375 | TIter next(hitLists); |
376 | TCollection *hitList; | |
6308b375 | 377 | |
e2afb3b6 | 378 | while((hitList = dynamic_cast<TCollection*>(next()))) { |
9e1a0ddb | 379 | TIter nexthit(hitList); |
380 | AliHit *hit; | |
e2afb3b6 | 381 | while((hit = dynamic_cast<AliHit*>(nexthit()))) { |
6308b375 | 382 | hit->SetTrack(map[hit->GetTrack()]); |
9e1a0ddb | 383 | } |
384 | } | |
385 | ||
386 | // | |
387 | // This for detectors which have a special mapping mechanism | |
388 | // for hits, such as TPC and TRD | |
389 | // | |
2b22f272 | 390 | |
9e1a0ddb | 391 | TObjArray* modules = gAlice->Modules(); |
392 | TIter nextmod(modules); | |
393 | AliModule *detector; | |
e2afb3b6 | 394 | while((detector = dynamic_cast<AliModule*>(nextmod()))) { |
9e1a0ddb | 395 | detector->RemapTrackHitIDs(map.GetArray()); |
ae9676e4 | 396 | detector->RemapTrackReferencesIDs(map.GetArray()); |
9e1a0ddb | 397 | } |
2b22f272 | 398 | // |
5d12ce38 | 399 | gAlice->GetMCApp()->RemapTrackReferencesIDs(map.GetArray()); |
2b22f272 | 400 | |
9e1a0ddb | 401 | // Now the output bit, from fHgwmk to nkeep we write everything and we erase |
402 | if(nkeep>fParticleFileMap.GetSize()) fParticleFileMap.Set(Int_t (nkeep*1.5)); | |
403 | ||
404 | for (i=fHgwmk+1; i<nkeep; ++i) { | |
e2afb3b6 | 405 | fParticleBuffer = dynamic_cast<TParticle*>(particles.At(i)); |
88cb7938 | 406 | fParticleFileMap[i]=static_cast<Int_t>(TreeK()->GetEntries()); |
407 | TreeK()->Fill(); | |
17f4a3d9 | 408 | particles[i]=fParticleBuffer=0; |
88cb7938 | 409 | } |
9e1a0ddb | 410 | |
411 | for (i=nkeep; i<fNtrack; ++i) particles[i]=0; | |
412 | ||
76969085 | 413 | Int_t toshrink = fNtrack-fHgwmk-1; |
9e1a0ddb | 414 | fLoadPoint-=toshrink; |
6308b375 | 415 | |
416 | ||
9e1a0ddb | 417 | for(i=fLoadPoint; i<fLoadPoint+toshrink; ++i) fParticles->RemoveAt(i); |
418 | ||
419 | fNtrack=nkeep; | |
420 | fHgwmk=nkeep-1; | |
6308b375 | 421 | } |
422 | ||
423 | void AliStack::ReorderKine() | |
424 | { | |
425 | // | |
426 | // In some transport code children might not come in a continuous sequence. | |
427 | // In this case the stack has to be reordered in order to establish the | |
428 | // mother daughter relation using index ranges. | |
429 | // | |
430 | if(fHgwmk+1 == fNtrack) return; | |
431 | ||
432 | // | |
433 | // Howmany secondaries have been produced ? | |
434 | Int_t nNew = fNtrack - fHgwmk - 1; | |
a1d92a3f | 435 | |
6308b375 | 436 | if (nNew > 0) { |
437 | Int_t i, j; | |
438 | TObjArray &particles = *fParticleMap; | |
439 | TArrayI map1(nNew); | |
440 | // | |
441 | // Copy pointers to temporary array | |
442 | TParticle** tmp = new TParticle*[nNew]; | |
443 | ||
444 | for (i = 0; i < nNew; i++) { | |
445 | if (particles.At(fHgwmk + 1 + i)) { | |
6308b375 | 446 | tmp[i] = (TParticle*) (particles.At(fHgwmk + 1 + i)); |
6308b375 | 447 | } else { |
448 | tmp[i] = 0x0; | |
449 | } | |
450 | map1[i] = -99; | |
451 | } | |
452 | ||
453 | ||
454 | // | |
455 | // Reset LoadPoint | |
456 | // | |
457 | fLoadPoint = fHgwmk + 1; | |
458 | // | |
459 | // Re-Push particles into stack | |
460 | // The outer loop is over parents, the inner over children. | |
461 | // -1 refers to the primary particle | |
462 | // | |
a1d92a3f | 463 | for (i = -1; i < nNew-1; i++) { |
6308b375 | 464 | Int_t ipa; |
465 | TParticle* parP; | |
466 | if (i == -1) { | |
467 | ipa = tmp[0]->GetFirstMother(); | |
468 | parP =dynamic_cast<TParticle*>(particles.At(ipa)); | |
469 | } else { | |
470 | ipa = (fHgwmk + 1 + i); | |
471 | // Skip deleted particles | |
472 | if (!tmp[i]) continue; | |
473 | // Skip particles without children | |
474 | if (tmp[i]->GetFirstDaughter() == -1) continue; | |
475 | parP = tmp[i]; | |
476 | } | |
477 | // Reset daughter information | |
a1d92a3f | 478 | |
479 | Int_t idaumin = parP->GetFirstDaughter() - fHgwmk - 1; | |
480 | Int_t idaumax = parP->GetLastDaughter() - fHgwmk - 1; | |
6308b375 | 481 | parP->SetFirstDaughter(-1); |
482 | parP->SetLastDaughter(-1); | |
a1d92a3f | 483 | for (j = idaumin; j <= idaumax; j++) { |
6308b375 | 484 | // Skip deleted particles |
485 | if (!tmp[j]) continue; | |
486 | // Skip particles already handled | |
487 | if (map1[j] != -99) continue; | |
488 | Int_t jpa = tmp[j]->GetFirstMother(); | |
489 | // Check if daughter of current parent | |
490 | if (jpa == ipa) { | |
491 | particles[fLoadPoint] = tmp[j]; | |
492 | // Re-establish daughter information | |
493 | parP->SetLastDaughter(fLoadPoint); | |
494 | if (parP->GetFirstDaughter() == -1) parP->SetFirstDaughter(fLoadPoint); | |
495 | // Set Mother information | |
496 | if (i != -1) { | |
497 | tmp[j]->SetFirstMother(map1[i]); | |
498 | } | |
499 | // Build the map | |
500 | map1[j] = fLoadPoint; | |
501 | // Increase load point | |
502 | fLoadPoint++; | |
503 | } | |
504 | } // children | |
505 | } // parents | |
506 | ||
507 | delete[] tmp; | |
508 | ||
509 | // | |
510 | // Build map for remapping of hits | |
511 | // | |
512 | TArrayI map(fNtrack); | |
513 | for (i = 0; i < fNtrack; i ++) { | |
514 | if (i <= fHgwmk) { | |
515 | map[i] = i; | |
516 | } else{ | |
517 | map[i] = map1[i - fHgwmk -1]; | |
518 | } | |
519 | } | |
520 | ||
521 | // Now loop on all registered hit lists | |
522 | ||
523 | TList* hitLists = gAlice->GetMCApp()->GetHitLists(); | |
524 | TIter next(hitLists); | |
525 | TCollection *hitList; | |
526 | ||
527 | while((hitList = dynamic_cast<TCollection*>(next()))) { | |
528 | TIter nexthit(hitList); | |
529 | AliHit *hit; | |
530 | while((hit = dynamic_cast<AliHit*>(nexthit()))) { | |
531 | hit->SetTrack(map[hit->GetTrack()]); | |
532 | } | |
533 | } | |
534 | ||
535 | // | |
536 | // This for detectors which have a special mapping mechanism | |
537 | // for hits, such as TPC and TRD | |
538 | // | |
539 | ||
540 | TObjArray* modules = gAlice->Modules(); | |
541 | TIter nextmod(modules); | |
542 | AliModule *detector; | |
543 | while((detector = dynamic_cast<AliModule*>(nextmod()))) { | |
544 | detector->RemapTrackHitIDs(map.GetArray()); | |
545 | detector->RemapTrackReferencesIDs(map.GetArray()); | |
546 | } | |
547 | gAlice->GetMCApp()->RemapTrackReferencesIDs(map.GetArray()); | |
548 | } // new particles poduced | |
9e1a0ddb | 549 | } |
550 | ||
e44c5340 | 551 | Bool_t AliStack::KeepPhysics(TParticle* part) |
552 | { | |
553 | // | |
554 | // Some particles have to kept on the stack for reasons motivated | |
555 | // by physics analysis. Decision is put here. | |
556 | // | |
557 | Bool_t keep = kFALSE; | |
558 | // | |
559 | // Keep first-generation daughter from primaries with heavy flavor | |
560 | // | |
561 | Int_t parent = part->GetFirstMother(); | |
562 | if (parent >= 0 && parent <= fHgwmk) { | |
e2afb3b6 | 563 | TParticle* father = dynamic_cast<TParticle*>(Particles()->At(parent)); |
e44c5340 | 564 | Int_t kf = father->GetPdgCode(); |
565 | kf = TMath::Abs(kf); | |
566 | Int_t kfl = kf; | |
567 | // meson ? | |
568 | if (kfl > 10) kfl/=100; | |
569 | // baryon | |
570 | if (kfl > 10) kfl/=10; | |
571 | if (kfl > 10) kfl/=10; | |
572 | if (kfl >= 4) { | |
573 | keep = kTRUE; | |
574 | } | |
575 | } | |
576 | return keep; | |
577 | } | |
578 | ||
9e1a0ddb | 579 | //_____________________________________________________________________________ |
580 | void AliStack::FinishEvent() | |
581 | { | |
88cb7938 | 582 | // |
583 | // Write out the kinematics that was not yet filled | |
584 | // | |
9e1a0ddb | 585 | |
88cb7938 | 586 | // Update event header |
9e1a0ddb | 587 | |
588 | ||
88cb7938 | 589 | if (!TreeK()) { |
9e1a0ddb | 590 | // Fatal("FinishEvent", "No kinematics tree is defined."); |
591 | // Don't panic this is a probably a lego run | |
592 | return; | |
9e1a0ddb | 593 | } |
594 | ||
595 | CleanParents(); | |
88cb7938 | 596 | if(TreeK()->GetEntries() ==0) { |
9e1a0ddb | 597 | // set the fParticleFileMap size for the first time |
598 | fParticleFileMap.Set(fHgwmk+1); | |
599 | } | |
600 | ||
601 | Bool_t allFilled = kFALSE; | |
602 | TObject *part; | |
603 | for(Int_t i=0; i<fHgwmk+1; ++i) | |
604 | if((part=fParticleMap->At(i))) { | |
e2afb3b6 | 605 | fParticleBuffer = dynamic_cast<TParticle*>(part); |
88cb7938 | 606 | fParticleFileMap[i]= static_cast<Int_t>(TreeK()->GetEntries()); |
607 | TreeK()->Fill(); | |
da2af24c | 608 | //PH (*fParticleMap)[i]=fParticleBuffer=0; |
609 | fParticleBuffer=0; | |
610 | fParticleMap->AddAt(0,i); | |
9e1a0ddb | 611 | |
612 | // When all primaries were filled no particle!=0 | |
613 | // should be left => to be removed later. | |
21bf7095 | 614 | if (allFilled) AliWarning(Form("Why != 0 part # %d?\n",i)); |
9e1a0ddb | 615 | } |
88cb7938 | 616 | else |
617 | { | |
9e1a0ddb | 618 | // // printf("Why = 0 part # %d?\n",i); => We know. |
619 | // break; | |
88cb7938 | 620 | // we don't break now in order to be sure there is no |
621 | // particle !=0 left. | |
622 | // To be removed later and replaced with break. | |
623 | if(!allFilled) allFilled = kTRUE; | |
624 | } | |
9e1a0ddb | 625 | } |
9e1a0ddb | 626 | //_____________________________________________________________________________ |
88cb7938 | 627 | |
9e1a0ddb | 628 | void AliStack::FlagTrack(Int_t track) |
629 | { | |
630 | // | |
631 | // Flags a track and all its family tree to be kept | |
632 | // | |
633 | ||
634 | TParticle *particle; | |
635 | ||
636 | Int_t curr=track; | |
637 | while(1) { | |
e2afb3b6 | 638 | particle=dynamic_cast<TParticle*>(fParticleMap->At(curr)); |
9e1a0ddb | 639 | |
640 | // If the particle is flagged the three from here upward is saved already | |
641 | if(particle->TestBit(kKeepBit)) return; | |
642 | ||
643 | // Save this particle | |
644 | particle->SetBit(kKeepBit); | |
645 | ||
646 | // Move to father if any | |
647 | if((curr=particle->GetFirstMother())==-1) return; | |
648 | } | |
649 | } | |
650 | ||
651 | //_____________________________________________________________________________ | |
ed54bf31 | 652 | void AliStack::KeepTrack(Int_t track) |
9e1a0ddb | 653 | { |
654 | // | |
655 | // Flags a track to be kept | |
656 | // | |
657 | ||
658 | fParticleMap->At(track)->SetBit(kKeepBit); | |
659 | } | |
660 | ||
661 | //_____________________________________________________________________________ | |
662 | void AliStack::Reset(Int_t size) | |
663 | { | |
664 | // | |
665 | // Resets stack | |
666 | // | |
88cb7938 | 667 | |
9e1a0ddb | 668 | fNtrack=0; |
669 | fNprimary=0; | |
670 | fHgwmk=0; | |
671 | fLoadPoint=0; | |
672 | fCurrent = -1; | |
88cb7938 | 673 | fTreeK = 0x0; |
9e1a0ddb | 674 | ResetArrays(size); |
675 | } | |
676 | ||
677 | //_____________________________________________________________________________ | |
678 | void AliStack::ResetArrays(Int_t size) | |
679 | { | |
680 | // | |
681 | // Resets stack arrays | |
682 | // | |
683 | ||
be3380a3 | 684 | if (fParticles) |
685 | fParticles->Clear(); | |
686 | else | |
687 | fParticles = new TClonesArray("TParticle",1000); | |
688 | if (fParticleMap) { | |
689 | fParticleMap->Clear(); | |
690 | if (size>0) fParticleMap->Expand(size);} | |
691 | else | |
692 | fParticleMap = new TObjArray(size); | |
9e1a0ddb | 693 | } |
694 | ||
695 | //_____________________________________________________________________________ | |
e2afb3b6 | 696 | void AliStack::SetHighWaterMark(Int_t) |
9e1a0ddb | 697 | { |
698 | // | |
699 | // Set high water mark for last track in event | |
700 | // | |
6308b375 | 701 | |
702 | ||
9e1a0ddb | 703 | fHgwmk = fNtrack-1; |
704 | fCurrentPrimary=fHgwmk; | |
9e1a0ddb | 705 | // Set also number of primary tracks |
706 | fNprimary = fHgwmk+1; | |
707 | fNtrack = fHgwmk+1; | |
708 | } | |
709 | ||
710 | //_____________________________________________________________________________ | |
711 | TParticle* AliStack::Particle(Int_t i) | |
712 | { | |
713 | // | |
714 | // Return particle with specified ID | |
715 | ||
da2af24c | 716 | //PH if(!(*fParticleMap)[i]) { |
717 | if(!fParticleMap->At(i)) { | |
911a3148 | 718 | Int_t nentries = fParticles->GetEntriesFast(); |
9e1a0ddb | 719 | // algorithmic way of getting entry index |
720 | // (primary particles are filled after secondaries) | |
e94530da | 721 | Int_t entry = TreeKEntry(i); |
9e1a0ddb | 722 | // check whether algorithmic way and |
723 | // and the fParticleFileMap[i] give the same; | |
724 | // give the fatal error if not | |
725 | if (entry != fParticleFileMap[i]) { | |
21bf7095 | 726 | AliFatal(Form( |
9e1a0ddb | 727 | "!! The algorithmic way and map are different: !!\n entry: %d map: %d", |
21bf7095 | 728 | entry, fParticleFileMap[i])); |
9e1a0ddb | 729 | } |
730 | ||
88cb7938 | 731 | TreeK()->GetEntry(entry); |
9e1a0ddb | 732 | new ((*fParticles)[nentries]) TParticle(*fParticleBuffer); |
733 | fParticleMap->AddAt((*fParticles)[nentries],i); | |
734 | } | |
e2afb3b6 | 735 | //PH return dynamic_cast<TParticle *>((*fParticleMap)[i]); |
736 | return dynamic_cast<TParticle*>(fParticleMap->At(i)); | |
9e1a0ddb | 737 | } |
738 | ||
e94530da | 739 | //_____________________________________________________________________________ |
740 | TParticle* AliStack::ParticleFromTreeK(Int_t id) const | |
741 | { | |
742 | // | |
743 | // return pointer to TParticle with label id | |
744 | // | |
745 | Int_t entry; | |
746 | if ((entry = TreeKEntry(id)) < 0) return 0; | |
747 | if (fTreeK->GetEntry(entry)<=0) return 0; | |
748 | return fParticleBuffer; | |
749 | } | |
750 | ||
751 | //_____________________________________________________________________________ | |
752 | Int_t AliStack::TreeKEntry(Int_t id) const | |
753 | { | |
754 | // | |
755 | // return entry number in the TreeK for particle with label id | |
756 | // return negative number if label>fNtrack | |
757 | // | |
758 | Int_t entry; | |
759 | if (id<fNprimary) | |
760 | entry = id+fNtrack-fNprimary; | |
761 | else | |
762 | entry = id-fNprimary; | |
763 | return entry; | |
764 | } | |
765 | ||
5d8718b8 | 766 | //_____________________________________________________________________________ |
642f15cf | 767 | Int_t AliStack::GetCurrentParentTrackNumber() const |
5d8718b8 | 768 | { |
769 | // | |
770 | // Return number of the parent of the current track | |
771 | // | |
772 | ||
773 | TParticle* current = (TParticle*)fParticleMap->At(fCurrent); | |
774 | ||
775 | if (current) | |
776 | return current->GetFirstMother(); | |
777 | else { | |
21bf7095 | 778 | AliWarning("Current track not found in the stack"); |
5d8718b8 | 779 | return -1; |
780 | } | |
781 | } | |
782 | ||
9e1a0ddb | 783 | //_____________________________________________________________________________ |
f5f55563 | 784 | Int_t AliStack::GetPrimary(Int_t id) |
9e1a0ddb | 785 | { |
786 | // | |
787 | // Return number of primary that has generated track | |
788 | // | |
789 | ||
790 | int current, parent; | |
9e1a0ddb | 791 | // |
792 | parent=id; | |
793 | while (1) { | |
794 | current=parent; | |
f5f55563 | 795 | parent=Particle(current)->GetFirstMother(); |
9e1a0ddb | 796 | if(parent<0) return current; |
797 | } | |
798 | } | |
799 | ||
800 | //_____________________________________________________________________________ | |
801 | void AliStack::DumpPart (Int_t i) const | |
802 | { | |
803 | // | |
804 | // Dumps particle i in the stack | |
805 | // | |
806 | ||
e2afb3b6 | 807 | //PH dynamic_cast<TParticle*>((*fParticleMap)[i])->Print(); |
808 | dynamic_cast<TParticle*>(fParticleMap->At(i))->Print(); | |
9e1a0ddb | 809 | } |
810 | ||
811 | //_____________________________________________________________________________ | |
812 | void AliStack::DumpPStack () | |
813 | { | |
814 | // | |
815 | // Dumps the particle stack | |
816 | // | |
817 | ||
3ab6f951 | 818 | Int_t i; |
819 | ||
88cb7938 | 820 | printf("\n\n=======================================================================\n"); |
3ab6f951 | 821 | for (i=0;i<fNtrack;i++) |
9e1a0ddb | 822 | { |
823 | TParticle* particle = Particle(i); | |
824 | if (particle) { | |
825 | printf("-> %d ",i); particle->Print(); | |
826 | printf("--------------------------------------------------------------\n"); | |
827 | } | |
828 | else | |
829 | Warning("DumpPStack", "No particle with id %d.", i); | |
830 | } | |
831 | ||
88cb7938 | 832 | printf("\n=======================================================================\n\n"); |
9e1a0ddb | 833 | |
834 | // print particle file map | |
835 | printf("\nParticle file map: \n"); | |
3ab6f951 | 836 | for (i=0; i<fNtrack; i++) |
9e1a0ddb | 837 | printf(" %d th entry: %d \n",i,fParticleFileMap[i]); |
838 | } | |
839 | ||
840 | ||
841 | //_____________________________________________________________________________ | |
842 | void AliStack::DumpLoadedStack() const | |
843 | { | |
844 | // | |
845 | // Dumps the particle in the stack | |
846 | // that are loaded in memory. | |
847 | // | |
848 | ||
849 | TObjArray &particles = *fParticleMap; | |
850 | printf( | |
851 | "\n\n=======================================================================\n"); | |
852 | for (Int_t i=0;i<fNtrack;i++) | |
853 | { | |
e2afb3b6 | 854 | TParticle* particle = dynamic_cast<TParticle*>(particles[i]); |
9e1a0ddb | 855 | if (particle) { |
856 | printf("-> %d ",i); particle->Print(); | |
857 | printf("--------------------------------------------------------------\n"); | |
858 | } | |
859 | else { | |
860 | printf("-> %d Particle not loaded.\n",i); | |
861 | printf("--------------------------------------------------------------\n"); | |
862 | } | |
863 | } | |
864 | printf( | |
865 | "\n=======================================================================\n\n"); | |
866 | } | |
867 | ||
868 | // | |
869 | // protected methods | |
870 | // | |
871 | ||
872 | //_____________________________________________________________________________ | |
873 | void AliStack::CleanParents() | |
874 | { | |
875 | // | |
876 | // Clean particles stack | |
877 | // Set parent/daughter relations | |
878 | // | |
879 | ||
880 | TObjArray &particles = *fParticleMap; | |
881 | TParticle *part; | |
882 | int i; | |
883 | for(i=0; i<fHgwmk+1; i++) { | |
e2afb3b6 | 884 | part = dynamic_cast<TParticle*>(particles.At(i)); |
9e1a0ddb | 885 | if(part) if(!part->TestBit(kDaughtersBit)) { |
886 | part->SetFirstDaughter(-1); | |
887 | part->SetLastDaughter(-1); | |
888 | } | |
889 | } | |
890 | } | |
891 | ||
892 | //_____________________________________________________________________________ | |
893 | TParticle* AliStack::GetNextParticle() | |
894 | { | |
895 | // | |
896 | // Return next particle from stack of particles | |
897 | // | |
898 | ||
899 | TParticle* particle = 0; | |
900 | ||
901 | // search secondaries | |
902 | //for(Int_t i=fNtrack-1; i>=0; i--) { | |
903 | for(Int_t i=fNtrack-1; i>fHgwmk; i--) { | |
e2afb3b6 | 904 | particle = dynamic_cast<TParticle*>(fParticleMap->At(i)); |
9e1a0ddb | 905 | if ((particle) && (!particle->TestBit(kDoneBit))) { |
906 | fCurrent=i; | |
9e1a0ddb | 907 | return particle; |
908 | } | |
909 | } | |
910 | ||
911 | // take next primary if all secondaries were done | |
912 | while (fCurrentPrimary>=0) { | |
913 | fCurrent = fCurrentPrimary; | |
e2afb3b6 | 914 | particle = dynamic_cast<TParticle*>(fParticleMap->At(fCurrentPrimary--)); |
9e1a0ddb | 915 | if ((particle) && (!particle->TestBit(kDoneBit))) { |
9e1a0ddb | 916 | return particle; |
917 | } | |
918 | } | |
919 | ||
920 | // nothing to be tracked | |
921 | fCurrent = -1; | |
6308b375 | 922 | |
923 | ||
9e1a0ddb | 924 | return particle; |
925 | } | |
88cb7938 | 926 | //__________________________________________________________________________________________ |
9e1a0ddb | 927 | |
88cb7938 | 928 | TTree* AliStack::TreeK() |
929 | { | |
930 | //returns TreeK | |
931 | if (fTreeK) | |
932 | { | |
933 | return fTreeK; | |
934 | } | |
935 | else | |
936 | { | |
937 | AliRunLoader *rl = AliRunLoader::GetRunLoader(fEventFolderName); | |
938 | if (rl == 0x0) | |
939 | { | |
21bf7095 | 940 | AliFatal(Form("Can not get RunLoader from event folder named %s",fEventFolderName.Data())); |
88cb7938 | 941 | return 0x0;//pro forma |
942 | } | |
943 | fTreeK = rl->TreeK(); | |
504b172d | 944 | if ( fTreeK ) |
88cb7938 | 945 | { |
504b172d | 946 | ConnectTree(); |
88cb7938 | 947 | } |
948 | else | |
949 | { | |
504b172d | 950 | //don't panic - could be Lego |
21bf7095 | 951 | AliWarning(Form("Can not get TreeK from RL. Ev. Folder is %s",fEventFolderName.Data())); |
88cb7938 | 952 | } |
953 | } | |
954 | return fTreeK;//never reached | |
955 | } | |
9e1a0ddb | 956 | //__________________________________________________________________________________________ |
88cb7938 | 957 | |
958 | void AliStack::ConnectTree() | |
9e1a0ddb | 959 | { |
960 | // | |
88cb7938 | 961 | // Creates branch for writing particles |
962 | // | |
21bf7095 | 963 | AliDebug(1, "Connecting TreeK"); |
88cb7938 | 964 | if (fTreeK == 0x0) |
965 | { | |
966 | if (TreeK() == 0x0) | |
967 | { | |
21bf7095 | 968 | AliFatal("Parameter is NULL");//we don't like such a jokes |
88cb7938 | 969 | return; |
970 | } | |
971 | return;//in this case TreeK() calls back this method (ConnectTree) | |
972 | //tree after setting fTreeK, the rest was already executed | |
973 | //it is safe to return now | |
974 | } | |
975 | ||
976 | // Create a branch for particles | |
977 | ||
21bf7095 | 978 | AliDebug(2, Form("Tree name is %s",fTreeK->GetName())); |
88cb7938 | 979 | |
980 | if (fTreeK->GetDirectory()) | |
981 | { | |
21bf7095 | 982 | AliDebug(2, Form("and dir is %s",fTreeK->GetDirectory()->GetName())); |
88cb7938 | 983 | } |
984 | else | |
21bf7095 | 985 | AliWarning("DIR IS NOT SET !!!"); |
88cb7938 | 986 | |
024a7e64 | 987 | TBranch *branch=fTreeK->GetBranch(AliRunLoader::GetKineBranchName()); |
88cb7938 | 988 | if(branch == 0x0) |
989 | { | |
024a7e64 | 990 | branch = fTreeK->Branch(AliRunLoader::GetKineBranchName(), "TParticle", &fParticleBuffer, 4000); |
21bf7095 | 991 | AliDebug(2, "Creating Branch in Tree"); |
88cb7938 | 992 | } |
993 | else | |
994 | { | |
21bf7095 | 995 | AliDebug(2, "Branch Found in Tree"); |
88cb7938 | 996 | branch->SetAddress(&fParticleBuffer); |
997 | } | |
998 | if (branch->GetDirectory()) | |
999 | { | |
21bf7095 | 1000 | AliDebug(1, Form("Branch Dir Name is %s",branch->GetDirectory()->GetName())); |
88cb7938 | 1001 | } |
1002 | else | |
21bf7095 | 1003 | AliWarning("Branch Dir is NOT SET"); |
9e1a0ddb | 1004 | } |
88cb7938 | 1005 | //__________________________________________________________________________________________ |
9e1a0ddb | 1006 | |
88cb7938 | 1007 | |
1008 | void AliStack::BeginEvent() | |
9e1a0ddb | 1009 | { |
1010 | // start a new event | |
88cb7938 | 1011 | Reset(); |
9e1a0ddb | 1012 | } |
1013 | ||
81694e6a | 1014 | //_____________________________________________________________________________ |
9e1a0ddb | 1015 | void AliStack::FinishRun() |
1016 | { | |
1017 | // Clean TreeK information | |
9e1a0ddb | 1018 | } |
5d8718b8 | 1019 | //_____________________________________________________________________________ |
88cb7938 | 1020 | |
1021 | Bool_t AliStack::GetEvent() | |
9e1a0ddb | 1022 | { |
1023 | // | |
1024 | // Get new event from TreeK | |
ccf7a81f | 1025 | |
9e1a0ddb | 1026 | // Reset/Create the particle stack |
88cb7938 | 1027 | fTreeK = 0x0; |
9e1a0ddb | 1028 | |
88cb7938 | 1029 | if (TreeK() == 0x0) //forces connecting |
1030 | { | |
21bf7095 | 1031 | AliError("cannot find Kine Tree for current event"); |
ccf7a81f | 1032 | return kFALSE; |
88cb7938 | 1033 | } |
ccf7a81f | 1034 | |
88cb7938 | 1035 | Int_t size = (Int_t)TreeK()->GetEntries(); |
9e1a0ddb | 1036 | ResetArrays(size); |
ccf7a81f | 1037 | return kTRUE; |
9e1a0ddb | 1038 | } |
88cb7938 | 1039 | //_____________________________________________________________________________ |
1040 | ||
1041 | void AliStack::SetEventFolderName(const char* foldname) | |
1042 | { | |
1043 | //Sets event folder name | |
1044 | fEventFolderName = foldname; | |
1045 | } |