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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
16/*
17$Log$
3d8c4988 18Revision 1.20 2002/04/30 11:47:30 morsch
19KeepPhysics method called by PurifyKine added (N. Carrer, A.M.)
20
e44c5340 21Revision 1.19 2002/03/12 11:06:03 morsch
22Add particle status code to argument list of SetTrack(..).
23
47c8bcbe 24Revision 1.18 2002/02/20 16:14:41 hristov
25fParticleBuffer points to object which doesn't belong to AliStack, do not delete it (J.Chudoba)
26
ba9938e6 27Revision 1.17 2001/12/05 08:51:56 hristov
28The default constructor now creates no objects (thanks to r.Brun). Some corrections required by the previous changes.
29
be3380a3 30Revision 1.16 2001/11/20 09:27:55 hristov
31Possibility to investigate a primary of not yet loaded particle (I.Hrivnacova)
32
f5f55563 33Revision 1.15 2001/09/04 15:10:37 hristov
34Additional protection is included to avoid some problems using Hijing
35
1305ca2f 36Revision 1.14 2001/08/30 09:44:06 hristov
37VertexSource_t added to avoid the warnings
38
da2af24c 39Revision 1.13 2001/08/29 13:31:42 morsch
40Protection against (fTreeK == 0) in destructor.
41
cfb2cc9c 42Revision 1.12 2001/07/27 13:03:13 hristov
43Default Branch split level set to 99
44
d0f40f23 45Revision 1.11 2001/07/27 12:34:20 jchudoba
46remove the dummy argument in GetEvent method
47
cec14bc5 48Revision 1.10 2001/07/20 10:13:54 morsch
49In Particle(Int_t) use GetEntriesFast to speed up the procedure.
50
911a3148 51Revision 1.9 2001/07/03 08:10:57 hristov
52J.Chudoba's changes merged correctly with the HEAD
53
d1750cff 54Revision 1.6 2001/05/31 06:59:06 fca
55Clean setting and deleting of fParticleBuffer
56
17f4a3d9 57Revision 1.5 2001/05/30 12:18:46 hristov
58Loop variables declared once
59
3ab6f951 60Revision 1.4 2001/05/25 07:25:20 hristov
61AliStack destructor corrected (I.Hrivnacova)
62
81694e6a 63Revision 1.3 2001/05/22 14:33:16 hristov
64Minor changes
65
ed54bf31 66Revision 1.2 2001/05/17 05:49:39 fca
67Reset pointers to daughters
68
76969085 69Revision 1.1 2001/05/16 14:57:22 alibrary
70New files for folders and Stack
71
9e1a0ddb 72*/
73
74///////////////////////////////////////////////////////////////////////////////
75// //
76// Particles stack class
77// //
78///////////////////////////////////////////////////////////////////////////////
79
80#include <iostream.h>
81
82#include <TObjArray.h>
83#include <TParticle.h>
84#include <TTree.h>
85#include <TFile.h>
86#include <TFolder.h>
87#include <TROOT.h>
88
89#include "AliStack.h"
90#include "AliRun.h"
91#include "AliModule.h"
92#include "AliHit.h"
9e1a0ddb 93
94ClassImp(AliStack)
95
96//_____________________________________________________________________________
97AliStack::AliStack(Int_t size)
98{
99 //
100 // Constructor
101 //
102
103 // Create the particles arrays
104 fParticles = new TClonesArray("TParticle",1000);
105 fParticleMap = new TObjArray(size);
17f4a3d9 106 fParticleBuffer = 0;
ccf7a81f 107 fNtrack = 0;
108 fNprimary = 0;
9e1a0ddb 109 fCurrent = -1;
110 fCurrentPrimary = -1;
ccf7a81f 111 fTreeK = 0;
9e1a0ddb 112}
113
114
115//_____________________________________________________________________________
116AliStack::AliStack()
117{
118 //
119 // Default constructor
120 //
121
122 // Create the particles arrays
be3380a3 123 fParticles = 0;
124 fParticleMap = 0;
17f4a3d9 125 fParticleBuffer = 0;
ccf7a81f 126 fNtrack = 0;
9e1a0ddb 127 fCurrent = -1;
ccf7a81f 128 fNprimary = 0;
9e1a0ddb 129 fCurrentPrimary = -1;
ccf7a81f 130 fTreeK = 0;
9e1a0ddb 131}
132
133
134//_____________________________________________________________________________
135AliStack::~AliStack()
136{
137 //
138 // Destructor
139 //
140
141 if (fParticles) {
142 fParticles->Delete();
143 delete fParticles;
144 }
145 delete fParticleMap;
cfb2cc9c 146 if (fTreeK) delete fTreeK;
9e1a0ddb 147}
148
149//
150// public methods
151//
152
153//_____________________________________________________________________________
154void AliStack::SetTrack(Int_t done, Int_t parent, Int_t pdg, Float_t *pmom,
155 Float_t *vpos, Float_t *polar, Float_t tof,
47c8bcbe 156 AliMCProcess mech, Int_t &ntr, Float_t weight, Int_t is)
9e1a0ddb 157{
158 //
159 // Load a track on the stack
160 //
161 // done 0 if the track has to be transported
162 // 1 if not
163 // parent identifier of the parent track. -1 for a primary
164 // pdg particle code
165 // pmom momentum GeV/c
166 // vpos position
167 // polar polarisation
168 // tof time of flight in seconds
169 // mecha production mechanism
170 // ntr on output the number of the track stored
171 //
172
173 Float_t mass;
174 const Int_t kfirstdaughter=-1;
175 const Int_t klastdaughter=-1;
9e1a0ddb 176 // const Float_t tlife=0;
177
178 //
179 // Here we get the static mass
180 // For MC is ok, but a more sophisticated method could be necessary
181 // if the calculated mass is required
182 // also, this method is potentially dangerous if the mass
183 // used in the MC is not the same of the PDG database
184 //
185 mass = TDatabasePDG::Instance()->GetParticle(pdg)->Mass();
186 Float_t e=TMath::Sqrt(mass*mass+pmom[0]*pmom[0]+
187 pmom[1]*pmom[1]+pmom[2]*pmom[2]);
188
ccf7a81f 189// 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",
190// mass,e,fNtrack,pdg,parent,done,vpos[0],vpos[1],vpos[2],pmom[0],pmom[1],pmom[2],kS);
191
9e1a0ddb 192 TClonesArray &particles = *fParticles;
193 TParticle* particle
194 = new(particles[fLoadPoint++])
47c8bcbe 195 TParticle(pdg, is, parent, -1, kfirstdaughter, klastdaughter,
9e1a0ddb 196 pmom[0], pmom[1], pmom[2], e, vpos[0], vpos[1], vpos[2], tof);
197 particle->SetPolarisation(TVector3(polar[0],polar[1],polar[2]));
198 particle->SetWeight(weight);
199 particle->SetUniqueID(mech);
200 if(!done) particle->SetBit(kDoneBit);
201
202
203 // Declare that the daughter information is valid
204 particle->SetBit(kDaughtersBit);
205 // Add the particle to the stack
206 fParticleMap->AddAtAndExpand(particle, fNtrack);
207
208 if(parent>=0) {
209 particle = (TParticle*) fParticleMap->At(parent);
1305ca2f 210 if (particle) {
211 particle->SetLastDaughter(fNtrack);
212 if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack);
213 }
214 else {
215 printf("Error in AliStack::SetTrack: Parent %d does not exist\n",parent);
216 }
9e1a0ddb 217 }
218 else {
219 //
220 // This is a primary track. Set high water mark for this event
221 fHgwmk = fNtrack;
222 //
223 // Set also number if primary tracks
224 fNprimary = fHgwmk+1;
225 fCurrentPrimary++;
226 }
227 ntr = fNtrack++;
228}
229
230//_____________________________________________________________________________
231void AliStack::SetTrack(Int_t done, Int_t parent, Int_t pdg,
232 Double_t px, Double_t py, Double_t pz, Double_t e,
233 Double_t vx, Double_t vy, Double_t vz, Double_t tof,
234 Double_t polx, Double_t poly, Double_t polz,
47c8bcbe 235 AliMCProcess mech, Int_t &ntr, Float_t weight, Int_t is)
9e1a0ddb 236{
237 //
238 // Load a track on the stack
239 //
240 // done 0 if the track has to be transported
241 // 1 if not
242 // parent identifier of the parent track. -1 for a primary
243 // pdg particle code
244 // kS generation status code
245 // px, py, pz momentum GeV/c
246 // vx, vy, vz position
247 // polar polarisation
248 // tof time of flight in seconds
249 // mech production mechanism
250 // ntr on output the number of the track stored
251 //
252 // New method interface:
253 // arguments were changed to be in correspondence with TParticle
254 // constructor.
255 // Note: the energy is not calculated from the static mass but
256 // it is passed by argument e.
257
258
9e1a0ddb 259 const Int_t kFirstDaughter=-1;
260 const Int_t kLastDaughter=-1;
261
262 TClonesArray &particles = *fParticles;
263 TParticle* particle
264 = new(particles[fLoadPoint++])
47c8bcbe 265 TParticle(pdg, is, parent, -1, kFirstDaughter, kLastDaughter,
9e1a0ddb 266 px, py, pz, e, vx, vy, vz, tof);
267
268 particle->SetPolarisation(polx, poly, polz);
269 particle->SetWeight(weight);
270 particle->SetUniqueID(mech);
271
272 if(!done) particle->SetBit(kDoneBit);
273
274 // Declare that the daughter information is valid
275 particle->SetBit(kDaughtersBit);
276 // Add the particle to the stack
277 fParticleMap->AddAtAndExpand(particle, fNtrack);//CHECK!!
278
279 if(parent>=0) {
280 particle = (TParticle*) fParticleMap->At(parent);
1305ca2f 281 if (particle) {
282 particle->SetLastDaughter(fNtrack);
283 if(particle->GetFirstDaughter()<0) particle->SetFirstDaughter(fNtrack);
284 }
285 else {
286 printf("Error in AliStack::SetTrack: Parent %d does not exist\n",parent);
287 }
9e1a0ddb 288 }
289 else {
290 //
291 // This is a primary track. Set high water mark for this event
292 fHgwmk = fNtrack;
293 //
294 // Set also number if primary tracks
295 fNprimary = fHgwmk+1;
296 fCurrentPrimary++;
297 }
298 ntr = fNtrack++;
299}
300
301//_____________________________________________________________________________
302void AliStack::GetNextTrack(Int_t &mtrack, Int_t &ipart, Float_t *pmom,
303 Float_t &e, Float_t *vpos, Float_t *polar,
304 Float_t &tof)
305{
306 //
307 // Return next track from stack of particles
308 //
309
310
311 TParticle* track = GetNextParticle();
ccf7a81f 312// cout << "GetNextTrack():" << fCurrent << fNprimary << endl;
9e1a0ddb 313
314 if(track) {
315 mtrack=fCurrent;
316 ipart=track->GetPdgCode();
317 pmom[0]=track->Px();
318 pmom[1]=track->Py();
319 pmom[2]=track->Pz();
320 e =track->Energy();
321 vpos[0]=track->Vx();
322 vpos[1]=track->Vy();
323 vpos[2]=track->Vz();
324 TVector3 pol;
325 track->GetPolarisation(pol);
326 polar[0]=pol.X();
327 polar[1]=pol.Y();
328 polar[2]=pol.Z();
329 tof=track->T();
330 track->SetBit(kDoneBit);
ccf7a81f 331// cout << "Filled params" << endl;
9e1a0ddb 332 }
333 else
334 mtrack=-1;
335
336 //
337 // stop and start timer when we start a primary track
338 Int_t nprimaries = fNprimary;
339 if (fCurrent >= nprimaries) return;
340 if (fCurrent < nprimaries-1) {
341 fTimer.Stop();
342 track=(TParticle*) fParticleMap->At(fCurrent+1);
343 // track->SetProcessTime(fTimer.CpuTime());
344 }
345 fTimer.Start();
346}
347
348
349//_____________________________________________________________________________
350void AliStack::PurifyKine()
351{
352 //
353 // Compress kinematic tree keeping only flagged particles
354 // and renaming the particle id's in all the hits
355 //
356
357 TObjArray &particles = *fParticleMap;
358 int nkeep=fHgwmk+1, parent, i;
359 TParticle *part, *father;
360 TArrayI map(particles.GetLast()+1);
361
362 // Save in Header total number of tracks before compression
363
364 // If no tracks generated return now
365 if(fHgwmk+1 == fNtrack) return;
366
9e1a0ddb 367 // First pass, invalid Daughter information
368 for(i=0; i<fNtrack; i++) {
369 // Preset map, to be removed later
370 if(i<=fHgwmk) map[i]=i ;
371 else {
372 map[i] = -99;
e44c5340 373 if((part=(TParticle*) particles.At(i))) {
374//
375// Check of this track should be kept for physics reasons
376 if (KeepPhysics(part)) KeepTrack(i);
377//
76969085 378 part->ResetBit(kDaughtersBit);
379 part->SetFirstDaughter(-1);
380 part->SetLastDaughter(-1);
381 }
9e1a0ddb 382 }
383 }
384 // Invalid daughter information for the parent of the first particle
385 // generated. This may or may not be the current primary according to
386 // whether decays have been recorded among the primaries
387 part = (TParticle *)particles.At(fHgwmk+1);
388 particles.At(part->GetFirstMother())->ResetBit(kDaughtersBit);
389 // Second pass, build map between old and new numbering
390 for(i=fHgwmk+1; i<fNtrack; i++) {
391 if(particles.At(i)->TestBit(kKeepBit)) {
392
393 // This particle has to be kept
394 map[i]=nkeep;
395 // If old and new are different, have to move the pointer
396 if(i!=nkeep) particles[nkeep]=particles.At(i);
397 part = (TParticle*) particles.At(nkeep);
398
399 // as the parent is always *before*, it must be already
400 // in place. This is what we are checking anyway!
401 if((parent=part->GetFirstMother())>fHgwmk)
402 if(map[parent]==-99) Fatal("PurifyKine","map[%d] = -99!\n",parent);
403 else part->SetFirstMother(map[parent]);
404
405 nkeep++;
406 }
407 }
408
409 // Fix daughters information
410 for (i=fHgwmk+1; i<nkeep; i++) {
411 part = (TParticle *)particles.At(i);
412 parent = part->GetFirstMother();
413 if(parent>=0) {
414 father = (TParticle *)particles.At(parent);
415 if(father->TestBit(kDaughtersBit)) {
416
417 if(i<father->GetFirstDaughter()) father->SetFirstDaughter(i);
418 if(i>father->GetLastDaughter()) father->SetLastDaughter(i);
419 } else {
420 // Initialise daughters info for first pass
421 father->SetFirstDaughter(i);
422 father->SetLastDaughter(i);
423 father->SetBit(kDaughtersBit);
424 }
425 }
426 }
427
428 // Now loop on all registered hit lists
429 TList* hitLists = gAlice->GetHitLists();
430 TIter next(hitLists);
431 TCollection *hitList;
432 while((hitList = (TCollection*)next())) {
433 TIter nexthit(hitList);
434 AliHit *hit;
435 while((hit = (AliHit*)nexthit())) {
436 hit->SetTrack(map[hit->GetTrack()]);
437 }
438 }
439
440 //
441 // This for detectors which have a special mapping mechanism
442 // for hits, such as TPC and TRD
443 //
444
445 TObjArray* modules = gAlice->Modules();
446 TIter nextmod(modules);
447 AliModule *detector;
448 while((detector = (AliModule*)nextmod())) {
449 detector->RemapTrackHitIDs(map.GetArray());
450 }
451
452 // Now the output bit, from fHgwmk to nkeep we write everything and we erase
453 if(nkeep>fParticleFileMap.GetSize()) fParticleFileMap.Set(Int_t (nkeep*1.5));
454
455 for (i=fHgwmk+1; i<nkeep; ++i) {
456 fParticleBuffer = (TParticle*) particles.At(i);
457 fParticleFileMap[i]=(Int_t) fTreeK->GetEntries();
458 fTreeK->Fill();
17f4a3d9 459 particles[i]=fParticleBuffer=0;
9e1a0ddb 460 }
461
462 for (i=nkeep; i<fNtrack; ++i) particles[i]=0;
463
76969085 464 Int_t toshrink = fNtrack-fHgwmk-1;
9e1a0ddb 465 fLoadPoint-=toshrink;
466 for(i=fLoadPoint; i<fLoadPoint+toshrink; ++i) fParticles->RemoveAt(i);
467
468 fNtrack=nkeep;
469 fHgwmk=nkeep-1;
470 // delete [] map;
471}
472
e44c5340 473Bool_t AliStack::KeepPhysics(TParticle* part)
474{
475 //
476 // Some particles have to kept on the stack for reasons motivated
477 // by physics analysis. Decision is put here.
478 //
479 Bool_t keep = kFALSE;
480 //
481 // Keep first-generation daughter from primaries with heavy flavor
482 //
483 Int_t parent = part->GetFirstMother();
484 if (parent >= 0 && parent <= fHgwmk) {
485 TParticle* father = (TParticle*) Particles()->At(parent);
486 Int_t kf = father->GetPdgCode();
487 kf = TMath::Abs(kf);
488 Int_t kfl = kf;
489 // meson ?
490 if (kfl > 10) kfl/=100;
491 // baryon
492 if (kfl > 10) kfl/=10;
493 if (kfl > 10) kfl/=10;
494 if (kfl >= 4) {
495 keep = kTRUE;
496 }
497 }
498 return keep;
499}
500
9e1a0ddb 501//_____________________________________________________________________________
502void AliStack::FinishEvent()
503{
504 //
505 // Write out the kinematics that was not yet filled
506 //
507
508 // Update event header
509
510
511 if (!fTreeK) {
512// Fatal("FinishEvent", "No kinematics tree is defined.");
513// Don't panic this is a probably a lego run
514 return;
515
516 }
517
518 CleanParents();
519 if(fTreeK->GetEntries() ==0) {
520 // set the fParticleFileMap size for the first time
521 fParticleFileMap.Set(fHgwmk+1);
522 }
523
524 Bool_t allFilled = kFALSE;
525 TObject *part;
526 for(Int_t i=0; i<fHgwmk+1; ++i)
527 if((part=fParticleMap->At(i))) {
528 fParticleBuffer = (TParticle*) part;
529 fParticleFileMap[i]= (Int_t) fTreeK->GetEntries();
530 fTreeK->Fill();
da2af24c 531 //PH (*fParticleMap)[i]=fParticleBuffer=0;
532 fParticleBuffer=0;
533 fParticleMap->AddAt(0,i);
9e1a0ddb 534
535 // When all primaries were filled no particle!=0
536 // should be left => to be removed later.
537 if (allFilled) printf("Why != 0 part # %d?\n",i);
538 }
539 else {
540 // // printf("Why = 0 part # %d?\n",i); => We know.
541 // break;
542 // we don't break now in order to be sure there is no
543 // particle !=0 left.
544 // To be removed later and replaced with break.
545 if(!allFilled) allFilled = kTRUE;
546 }
ccf7a81f 547// cout << "Nof particles: " << fNtrack << endl;
9e1a0ddb 548 //Reset();
549}
550
551//_____________________________________________________________________________
552void AliStack::FlagTrack(Int_t track)
553{
554 //
555 // Flags a track and all its family tree to be kept
556 //
557
558 TParticle *particle;
559
560 Int_t curr=track;
561 while(1) {
562 particle=(TParticle*)fParticleMap->At(curr);
563
564 // If the particle is flagged the three from here upward is saved already
565 if(particle->TestBit(kKeepBit)) return;
566
567 // Save this particle
568 particle->SetBit(kKeepBit);
569
570 // Move to father if any
571 if((curr=particle->GetFirstMother())==-1) return;
572 }
573}
574
575//_____________________________________________________________________________
ed54bf31 576void AliStack::KeepTrack(Int_t track)
9e1a0ddb 577{
578 //
579 // Flags a track to be kept
580 //
581
582 fParticleMap->At(track)->SetBit(kKeepBit);
583}
584
585//_____________________________________________________________________________
586void AliStack::Reset(Int_t size)
587{
588 //
589 // Resets stack
590 //
591
592 fNtrack=0;
593 fNprimary=0;
594 fHgwmk=0;
595 fLoadPoint=0;
596 fCurrent = -1;
597 ResetArrays(size);
598}
599
600//_____________________________________________________________________________
601void AliStack::ResetArrays(Int_t size)
602{
603 //
604 // Resets stack arrays
605 //
606
be3380a3 607 if (fParticles)
608 fParticles->Clear();
609 else
610 fParticles = new TClonesArray("TParticle",1000);
611 if (fParticleMap) {
612 fParticleMap->Clear();
613 if (size>0) fParticleMap->Expand(size);}
614 else
615 fParticleMap = new TObjArray(size);
9e1a0ddb 616}
617
618//_____________________________________________________________________________
ed54bf31 619void AliStack::SetHighWaterMark(Int_t nt)
9e1a0ddb 620{
621 //
622 // Set high water mark for last track in event
623 //
624
625 fHgwmk = fNtrack-1;
626 fCurrentPrimary=fHgwmk;
627
628 // Set also number of primary tracks
629 fNprimary = fHgwmk+1;
630 fNtrack = fHgwmk+1;
631}
632
633//_____________________________________________________________________________
634TParticle* AliStack::Particle(Int_t i)
635{
636 //
637 // Return particle with specified ID
638
da2af24c 639 //PH if(!(*fParticleMap)[i]) {
640 if(!fParticleMap->At(i)) {
911a3148 641 Int_t nentries = fParticles->GetEntriesFast();
9e1a0ddb 642 // algorithmic way of getting entry index
643 // (primary particles are filled after secondaries)
644 Int_t entry;
645 if (i<fNprimary)
646 entry = i+fNtrack-fNprimary;
647 else
648 entry = i-fNprimary;
649 // check whether algorithmic way and
650 // and the fParticleFileMap[i] give the same;
651 // give the fatal error if not
652 if (entry != fParticleFileMap[i]) {
653 Fatal("Particle",
654 "!! The algorithmic way and map are different: !!\n entry: %d map: %d",
655 entry, fParticleFileMap[i]);
656 }
657
658 fTreeK->GetEntry(entry);
659 new ((*fParticles)[nentries]) TParticle(*fParticleBuffer);
660 fParticleMap->AddAt((*fParticles)[nentries],i);
661 }
da2af24c 662 //PH return (TParticle *) (*fParticleMap)[i];
663 return (TParticle *) fParticleMap->At(i);
9e1a0ddb 664}
665
666//_____________________________________________________________________________
f5f55563 667Int_t AliStack::GetPrimary(Int_t id)
9e1a0ddb 668{
669 //
670 // Return number of primary that has generated track
671 //
672
673 int current, parent;
9e1a0ddb 674 //
675 parent=id;
676 while (1) {
677 current=parent;
f5f55563 678 parent=Particle(current)->GetFirstMother();
9e1a0ddb 679 if(parent<0) return current;
680 }
681}
682
683//_____________________________________________________________________________
684void AliStack::DumpPart (Int_t i) const
685{
686 //
687 // Dumps particle i in the stack
688 //
689
da2af24c 690 //PH ((TParticle*) (*fParticleMap)[i])->Print();
691 ((TParticle*) fParticleMap->At(i))->Print();
9e1a0ddb 692}
693
694//_____________________________________________________________________________
695void AliStack::DumpPStack ()
696{
697 //
698 // Dumps the particle stack
699 //
700
3ab6f951 701 Int_t i;
702
9e1a0ddb 703 printf(
704 "\n\n=======================================================================\n");
3ab6f951 705 for (i=0;i<fNtrack;i++)
9e1a0ddb 706 {
707 TParticle* particle = Particle(i);
708 if (particle) {
709 printf("-> %d ",i); particle->Print();
710 printf("--------------------------------------------------------------\n");
711 }
712 else
713 Warning("DumpPStack", "No particle with id %d.", i);
714 }
715
716 printf(
717 "\n=======================================================================\n\n");
718
719 // print particle file map
720 printf("\nParticle file map: \n");
3ab6f951 721 for (i=0; i<fNtrack; i++)
9e1a0ddb 722 printf(" %d th entry: %d \n",i,fParticleFileMap[i]);
723}
724
725
726//_____________________________________________________________________________
727void AliStack::DumpLoadedStack() const
728{
729 //
730 // Dumps the particle in the stack
731 // that are loaded in memory.
732 //
733
734 TObjArray &particles = *fParticleMap;
735 printf(
736 "\n\n=======================================================================\n");
737 for (Int_t i=0;i<fNtrack;i++)
738 {
739 TParticle* particle = (TParticle*) particles[i];
740 if (particle) {
741 printf("-> %d ",i); particle->Print();
742 printf("--------------------------------------------------------------\n");
743 }
744 else {
745 printf("-> %d Particle not loaded.\n",i);
746 printf("--------------------------------------------------------------\n");
747 }
748 }
749 printf(
750 "\n=======================================================================\n\n");
751}
752
753//
754// protected methods
755//
756
757//_____________________________________________________________________________
758void AliStack::CleanParents()
759{
760 //
761 // Clean particles stack
762 // Set parent/daughter relations
763 //
764
765 TObjArray &particles = *fParticleMap;
766 TParticle *part;
767 int i;
768 for(i=0; i<fHgwmk+1; i++) {
769 part = (TParticle *)particles.At(i);
770 if(part) if(!part->TestBit(kDaughtersBit)) {
771 part->SetFirstDaughter(-1);
772 part->SetLastDaughter(-1);
773 }
774 }
775}
776
777//_____________________________________________________________________________
778TParticle* AliStack::GetNextParticle()
779{
780 //
781 // Return next particle from stack of particles
782 //
783
784 TParticle* particle = 0;
785
786 // search secondaries
787 //for(Int_t i=fNtrack-1; i>=0; i--) {
788 for(Int_t i=fNtrack-1; i>fHgwmk; i--) {
789 particle = (TParticle*) fParticleMap->At(i);
790 if ((particle) && (!particle->TestBit(kDoneBit))) {
791 fCurrent=i;
792 //cout << "GetNextParticle() - secondary "
793 // << fNtrack << " " << fHgwmk << " " << fCurrent << endl;
794 return particle;
795 }
796 }
797
798 // take next primary if all secondaries were done
799 while (fCurrentPrimary>=0) {
800 fCurrent = fCurrentPrimary;
801 particle = (TParticle*) fParticleMap->At(fCurrentPrimary--);
802 if ((particle) && (!particle->TestBit(kDoneBit))) {
803 //cout << "GetNextParticle() - primary "
804 // << fNtrack << " " << fHgwmk << " " << fCurrent << endl;
805 return particle;
806 }
807 }
808
809 // nothing to be tracked
810 fCurrent = -1;
811 //cout << "GetNextParticle() - none "
812 // << fNtrack << " " << fHgwmk << " " << fCurrent << endl;
813 return particle;
814}
815
816//__________________________________________________________________________________________
817void AliStack::MakeTree(Int_t event, const char *file)
818{
819//
820// Make Kine tree and creates branch for writing particles
821//
822 TBranch *branch=0;
823 // Make Kinematics Tree
824 char hname[30];
9e1a0ddb 825 if (!fTreeK) {
826 sprintf(hname,"TreeK%d",event);
827 fTreeK = new TTree(hname,"Kinematics");
828 // Create a branch for particles
d0f40f23 829 branch = fTreeK->Branch("Particles", "TParticle", &fParticleBuffer, 4000);
9e1a0ddb 830 fTreeK->Write(0,TObject::kOverwrite);
831 }
832}
833
81694e6a 834//_____________________________________________________________________________
9e1a0ddb 835void AliStack::BeginEvent(Int_t event)
836{
837// start a new event
838//
839//
840 fNprimary = 0;
841 fNtrack = 0;
842
843 char hname[30];
844 if(fTreeK) {
845 fTreeK->Reset();
846 sprintf(hname,"TreeK%d",event);
847 fTreeK->SetName(hname);
848 }
849}
850
81694e6a 851//_____________________________________________________________________________
9e1a0ddb 852void AliStack::FinishRun()
853{
854// Clean TreeK information
855 if (fTreeK) {
856 delete fTreeK; fTreeK = 0;
857 }
858}
859
cec14bc5 860Bool_t AliStack::GetEvent(Int_t event)
9e1a0ddb 861{
862//
863// Get new event from TreeK
ccf7a81f 864
9e1a0ddb 865 // Reset/Create the particle stack
866 if (fTreeK) delete fTreeK;
867
868 // Get Kine Tree from file
869 char treeName[20];
870 sprintf(treeName,"TreeK%d",event);
871 fTreeK = (TTree*)gDirectory->Get(treeName);
872
ccf7a81f 873 if (fTreeK)
874 fTreeK->SetBranchAddress("Particles", &fParticleBuffer);
875 else {
3d8c4988 876 // Error("GetEvent","cannot find Kine Tree for event:%d\n",event);
877 Warning("GetEvent","cannot find Kine Tree for event:%d\n",event);
ccf7a81f 878 return kFALSE;
879 }
880// printf("\n primaries %d", fNprimary);
881// printf("\n tracks %d", fNtrack);
882
9e1a0ddb 883 Int_t size = (Int_t)fTreeK->GetEntries();
884 ResetArrays(size);
ccf7a81f 885 return kTRUE;
9e1a0ddb 886}