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