PMD Z-position fixed at 361.5 instead of 365.0cm
[u/mrichter/AliRoot.git] / RALICE / AliVertex.cxx
CommitLineData
4c039060 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
f531a546 16// $Id$
4c039060 17
959fbac5 18///////////////////////////////////////////////////////////////////////////
19// Class AliVertex
20// Creation and investigation of an AliVertex.
21// An AliVertex can be constructed by adding AliTracks and/or AliJets.
22//
23// Note : Also (secondary) vertices can be added to a vertex.
24//
f34f4acb 25// To provide maximal flexibility to the user, two modes of vertex storage
26// are provided by means of the memberfunction SetVertexCopy().
27// The same holds for the storage of jets via SetJetCopy().
28//
29// a) SetVertexCopy(0) (which is the default).
30// Only the pointers of the 'added' vertices are stored.
31// This mode is typically used by making vertex studies based on a fixed list
32// of vertices which stays under user control or is contained for instance
33// in an AliEvent.
34// In this way the AliVertex just represents a 'logical structure' for the
35// physics analysis which can be embedded in e.g. an AliEvent or AliVertex.
35044448 36//
37// Note :
f34f4acb 38// Modifications made to the original vertices also affect the AliVertex objects
35044448 39// which are stored.
40//
f34f4acb 41// b) SetVertexCopy(1).
42// Of every 'added' vertex a private copy will be made of which the pointer
43// will be stored.
44// In this way the AliVertex represents an entity on its own and modifications
45// made to the original vertices do not affect the AliVertex objects which are
46// stored.
47// This mode will allow 'adding' many different AliVertex objects by
48// creating only one AliVertex instance in the main programme and using the
35044448 49// AliVertex::Reset, AliVertex::AddTrack and parameter setting memberfunctions.
f34f4acb 50//
8e8e6c7f 51// See also the documentation provided for the memberfunction SetOwner().
52//
959fbac5 53// Coding example to make 3 vertices v1, v2 and v3.
54// ------------------------------------------------
55// v1 contains the tracks 1,2,3 and 4
f34f4acb 56// v2 contains many different tracks
959fbac5 57// v3 contains the jets 1 and 2
58//
f34f4acb 59// AliTrack t1,t2,t3,t4;
959fbac5 60// ...
61// ... // code to fill the track data
62// ...
63//
64// AliJet j1,j2;
65// ...
66// ... // code to fill the jet data
67// ...
68//
f34f4acb 69// AliVertex v1;
70// v1.SetVertexCopy(1);
959fbac5 71//
f531a546 72// v1.AddTrack(t1);
73// v1.AddTrack(t2);
74// v1.AddTrack(t3);
75// v1.AddTrack(t4);
959fbac5 76//
77// Float_t r1[3]={2.4,0.1,-8.5};
78// v1.SetPosition(r1,"car");
79//
f34f4acb 80// AliVertex v2;
81// v2.SetTrackCopy(1);
82//
83// AliTrack* tx=new AliTrack();
84// for (Int_t i=0; i<10; i++)
85// {
86// ...
87// ... // code to fill the track data
88// ...
89// v2.AddTrack(tx);
90// tx->Reset();
91// }
959fbac5 92//
93// Float_t r2[3]={1.6,-3.2,5.7};
94// v2.SetPosition(r2,"car");
95//
96// AliVertex v3;
97//
f531a546 98// v3.AddJet(j1);
99// v3.AddJet(j2);
959fbac5 100//
101// Float_t r3[3]={6.2,4.8,1.3};
102// v3.SetPosition(r3,"car");
103//
84bb7c66 104// v1.Data("sph");
959fbac5 105// v2.ListAll();
106// v3.List("cyl");
107//
108// Float_t e1=v1.GetEnergy();
109// Ali3Vector p1=v1.Get3Momentum();
110// Float_t loc[3];
111// v1.GetPosition(loc,"sph");
112// AliPosition r=v2.GetPosition();
84bb7c66 113// r.Data();
959fbac5 114// Int_t nt=v2.GetNtracks();
115// AliTrack* tv=v2.GetTrack(1); // Access track number 1 of Vertex v2
116//
117// Specify the vertices v2 and v3 as secondary vertices of v1
118//
f531a546 119// v1.AddVertex(v2);
120// v1.AddVertex(v3);
959fbac5 121//
122// v1.List();
123//
124// Int_t nv=v1.GetNvtx();
125// AliVertex* vx=v1.GetVertex(1); // Access 1st secondary vertex of v1
126// Float_t e=vx->GetEnergy();
127//
128// Float_t M=v1.GetInvmass();
129//
130// Reconstruct Vertex v1 from scratch
131//
132// v1.Reset();
133// v1.SetNvmax(25); // Increase initial no. of sec. vertices
f531a546 134// v1.AddTrack(t3);
f34f4acb 135// v1.AddTrack(t4);
f531a546 136// v1.AddJet(j2);
959fbac5 137// Float_t pos[3]={7,9,4};
138// v1.SetPosition(pos,"car");
139//
140// Note : All quantities are in GeV, GeV/c or GeV/c**2
141//
142//--- Author: Nick van Eijndhoven 04-apr-1998 UU-SAP Utrecht
f531a546 143//- Modified: NvE $Date$ UU-SAP Utrecht
959fbac5 144///////////////////////////////////////////////////////////////////////////
145
d88f97cc 146#include "AliVertex.h"
c72198f1 147#include "Riostream.h"
d88f97cc 148
149ClassImp(AliVertex) // Class implementation to enable ROOT I/O
150
c72198f1 151AliVertex::AliVertex() : AliJet(),AliPosition()
d88f97cc 152{
959fbac5 153// Default constructor.
154// All variables initialised to 0.
155// Initial maximum number of tracks is set to the default value.
156// Initial maximum number of sec. vertices is set to the default value.
6516b62d 157 Init();
d88f97cc 158 Reset();
d88f97cc 159 SetNvmax();
f34f4acb 160 SetNjmax();
d88f97cc 161}
162///////////////////////////////////////////////////////////////////////////
6516b62d 163void AliVertex::Init()
d88f97cc 164{
6516b62d 165// Initialisation of pointers etc...
d88f97cc 166 fNvmax=0;
167 fVertices=0;
29beb80d 168 fConnects=0;
f34f4acb 169 fVertexCopy=0;
170 fNjmax=0;
171 fJets=0;
6516b62d 172 fJetTracks=0;
f34f4acb 173 fJetCopy=0;
a37bb40e 174 fLines=0;
6516b62d 175}
176///////////////////////////////////////////////////////////////////////////
c72198f1 177AliVertex::AliVertex(Int_t n) : AliJet(n),AliPosition()
6516b62d 178{
179// Create a vertex to hold initially a maximum of n tracks
180// All variables initialised to 0
c72198f1 181 if (n<=0)
d88f97cc 182 {
c72198f1 183 cout << " *** This AliJet initialisation was invoked via the AliVertex ctor." << endl;
d88f97cc 184 }
c72198f1 185 Init();
186 Reset();
d88f97cc 187 SetNvmax();
f34f4acb 188 SetNjmax();
d88f97cc 189}
190///////////////////////////////////////////////////////////////////////////
191AliVertex::~AliVertex()
192{
193// Default destructor
f34f4acb 194 if (fVertices)
195 {
f34f4acb 196 delete fVertices;
197 fVertices=0;
198 }
29beb80d 199 if (fConnects)
200 {
29beb80d 201 delete fConnects;
202 fConnects=0;
203 }
f34f4acb 204 if (fJets)
205 {
f34f4acb 206 delete fJets;
207 fJets=0;
208 }
6516b62d 209 if (fJetTracks)
210 {
211 delete fJetTracks;
212 fJetTracks=0;
213 }
a37bb40e 214 if (fLines)
215 {
216 delete fLines;
217 fLines=0;
218 }
6516b62d 219}
220///////////////////////////////////////////////////////////////////////////
8e8e6c7f 221void AliVertex::SetOwner(Bool_t own)
222{
223// Set ownership of all added objects.
224// The default parameter is own=kTRUE.
225//
226// Invokation of this memberfunction also sets all the copy modes
227// (e.g. TrackCopy & co.) according to the value of own.
228//
229// This function (with own=kTRUE) is particularly useful when reading data
230// from a tree/file, since Reset() will then actually remove all the
231// added objects from memory irrespective of the copy mode settings
232// during the tree/file creation process. In this way it provides a nice way
233// of preventing possible memory leaks in the reading/analysis process.
234//
235// In addition this memberfunction can also be used as a shortcut to set all
236// copy modes in one go during a tree/file creation process.
237// However, in this case the user has to take care to only set/change the
238// ownership (and copy mode) for empty objects (e.g. newly created objects
239// or after invokation of the Reset() memberfunction) otherwise it will
240// very likely result in inconsistent destructor behaviour.
241
242 Int_t mode=1;
243 if (!own) mode=0;
244 if (fVertices) fVertices->SetOwner(own);
245 fVertexCopy=mode;
246 if (fJets) fJets->SetOwner(own);
247 fJetCopy=mode;
248
249 AliJet::SetOwner(own);
250}
251///////////////////////////////////////////////////////////////////////////
c72198f1 252AliVertex::AliVertex(AliVertex& v) : AliJet(v.fNtinit),AliPosition(v)
6516b62d 253{
254// Copy constructor
255 Init();
c72198f1 256 fNvtx=0;
257 fNjets=0;
258 SetNvmax(v.fNvmax);
259 SetNjmax(v.fNjmax);
6516b62d 260 SetTrackCopy(v.GetTrackCopy());
261 SetVertexCopy(v.GetVertexCopy());
262 SetJetCopy(v.GetJetCopy());
263 SetId(v.GetId());
6516b62d 264
265 // Copy all tracks except the ones coming from jets
266 AliTrack* tx=0;
267 Int_t jetflag=0,connect=0;
268 AliTrack* tx2=0;
269 for (Int_t it=1; it<=v.GetNtracks(); it++)
270 {
271 tx=v.GetTrack(it);
272 if (tx)
273 {
274 jetflag=v.IsJetTrack(tx);
275 connect=v.IsConnectTrack(tx);
276
277 if (!jetflag && !connect) AddTrack(tx);
278
279 if (connect)
280 {
281 if (!fConnects)
282 {
283 fConnects=new TObjArray(fNvmax);
284 if (!fTrackCopy) fConnects->SetOwner();
285 }
286 tx2=new AliTrack(*tx);
287 fConnects->Add(tx2);
288 AddTrack(tx2,0);
289 }
290 }
291 }
292
293 // Copy all the (secondary) vertices without re-creating connecting tracks
294 // The connecting tracks have already been copied above
295 AliVertex* vx=0;
296 for (Int_t iv=1; iv<=v.GetNvertices(); iv++)
297 {
298 vx=v.GetVertex(iv);
299 if (vx) AddVertex(vx,0);
300 }
301
302 // Copy all the jets including the jet tracks for these jets for which
303 // this was also the case in the original vertex
304 AliJet* jx=0;
305 for (Int_t ij=1; ij<=v.GetNjets(); ij++)
306 {
307 jx=v.GetJet(ij);
308 if (jx)
309 {
310 jetflag=0;
311 if (jx->GetNtracks())
312 {
313 tx=jx->GetTrack(1);
314 if (tx)
315 {
316 jetflag=v.IsJetTrack(tx);
317 }
318 }
319 AddJet(jx,jetflag);
320 }
321 }
d88f97cc 322}
323///////////////////////////////////////////////////////////////////////////
324void AliVertex::SetNvmax(Int_t n)
325{
326// Set the initial maximum number of (secondary) vertices
327 if (n > 0)
328 {
329 fNvmax=n;
330 }
331 else
332 {
333 fNvmax=1;
334 }
f34f4acb 335 if (fVertices)
336 {
f34f4acb 337 delete fVertices;
338 fVertices=0;
339 }
340}
341///////////////////////////////////////////////////////////////////////////
342void AliVertex::SetNjmax(Int_t n)
343{
344// Set the initial maximum number of jets
345 if (n > 0)
346 {
347 fNjmax=n;
348 }
349 else
350 {
351 fNjmax=1;
352 }
353 if (fJets)
354 {
f34f4acb 355 delete fJets;
356 fJets=0;
357 }
d88f97cc 358}
359///////////////////////////////////////////////////////////////////////////
360void AliVertex::Reset()
361{
7849a8ab 362// Reset all variables to 0 and reset all stored vertex and jet lists.
d88f97cc 363// The max. number of tracks is set to the initial value again
364// The max. number of vertices is set to the default value again
7849a8ab 365// The max. number of jets is set to the default value again
d88f97cc 366
367 AliJet::Reset();
368
f531a546 369 Double_t a[3]={0,0,0};
370 SetPosition(a,"sph");
371 SetPositionErrors(a,"car");
372
d88f97cc 373 fNvtx=0;
374 if (fNvmax>0) SetNvmax(fNvmax);
29beb80d 375 if (fConnects)
376 {
29beb80d 377 delete fConnects;
378 fConnects=0;
379 }
f34f4acb 380
381 fNjets=0;
382 if (fNjmax>0) SetNjmax(fNjmax);
6516b62d 383 if (fJetTracks)
384 {
385 delete fJetTracks;
386 fJetTracks=0;
387 }
a37bb40e 388
389 if (fLines)
390 {
391 delete fLines;
392 fLines=0;
393 }
d88f97cc 394}
395///////////////////////////////////////////////////////////////////////////
7849a8ab 396void AliVertex::ResetVertices()
397{
398// Reset the stored vertex list and delete all connecting tracks which
399// were generated automatically via connect=1 in AddVertex().
400// The max. number of vertices is set to the default value again.
35044448 401// All physics quantities are updated according to the removal of the
402// connecting tracks.
7849a8ab 403 AliTrack* t;
404 if (fConnects)
405 {
406 for (Int_t i=0; i<=fConnects->GetLast(); i++)
407 {
408 t=(AliTrack*)fConnects->At(i);
409 AliTrack* test=(AliTrack*)fTracks->Remove(t);
35044448 410 if (test)
411 {
412 fNtrk--;
413 (Ali4Vector&)(*this)-=(Ali4Vector&)(*t);
414 fQ-=t->GetCharge();
6516b62d 415 if (fTrackCopy) delete t;
35044448 416 }
7849a8ab 417 }
418 fTracks->Compress();
419 }
420
7849a8ab 421 fNvtx=0;
422 if (fNvmax>0) SetNvmax(fNvmax);
423 if (fConnects)
424 {
7849a8ab 425 delete fConnects;
426 fConnects=0;
427 }
428}
429///////////////////////////////////////////////////////////////////////////
f34f4acb 430void AliVertex::AddJet(AliJet& j,Int_t tracks)
d88f97cc 431{
f34f4acb 432// Add a jet (and its tracks) to the vertex
433// In case the maximum number of jets has been reached,
434// the array space will be extended automatically
435//
436// Note : By default the tracks of the jet are added to the current (primary)
437// vertex.
438// The automatic addition of the tracks of the jet can be suppressed
439// by specifying tracks=0. In this case only the AliJet object will
440// be stored according to the mode specified by SetJetCopy().
441// The latter will enable jet studies based on a fixed list of tracks
442// as contained e.g. in an AliVertex or AliEvent.
6516b62d 443 if (!fJets)
444 {
445 fJets=new TObjArray(fNjmax);
446 if (fJetCopy) fJets->SetOwner();
447 }
f34f4acb 448 if (fNjets == fNjmax) // Check if maximum jet number is reached
d88f97cc 449 {
f34f4acb 450 fNjmax++;
451 fJets->Expand(fNjmax);
452 }
453
454 // Add the jet to the list
6516b62d 455 AliJet* jx=&j;
456 if (fJetCopy) jx=new AliJet(j);
457
458 if (jx)
f34f4acb 459 {
6516b62d 460 fNjets++;
461 fJets->Add(jx);
f34f4acb 462 }
463
464 // Add the tracks of the jet to this vertex
465 if (tracks)
466 {
6516b62d 467 if (!fJetTracks)
468 {
469 fJetTracks=new TObjArray();
470 }
471 Int_t copy=1-(jx->GetTrackCopy());
f34f4acb 472 AliTrack* tj;
6516b62d 473 for (Int_t i=1; i<=jx->GetNtracks(); i++)
f34f4acb 474 {
6516b62d 475 tj=jx->GetTrack(i);
476 if (tj)
477 {
478 AddTrack(tj,copy);
479 fJetTracks->Add(tj);
480 }
f34f4acb 481 }
d88f97cc 482 }
483}
484///////////////////////////////////////////////////////////////////////////
f531a546 485void AliVertex::AddVertex(AliVertex& v,Int_t connect)
d88f97cc 486{
487// Add a (secondary) vertex to the current vertex.
488// In case the maximum number of (secondary) vertices has been reached,
489// the array space will be extended automatically
490//
29beb80d 491// Note : By default the 4-momentum and charge of the current (primary) vertex
492// are updated by automatically creating the track connecting
493// both vertices. The track parameters are taken from the
494// 4-momentum and charge of the secondary vertex.
495// The automatic creation of the connecting track and updating
496// of the (primary) vertex 4-momentum and charge can be suppressed
497// by specifying connect=0. In this case, however, the user
498// has to introduce the connecting track lateron by hand
499// explicitly in order to match the kinematics and charge.
d88f97cc 500//
6516b62d 501 if (!fVertices)
502 {
503 fVertices=new TObjArray(fNvmax);
504 if (fVertexCopy) fVertices->SetOwner();
505 }
d88f97cc 506 if (fNvtx == fNvmax) // Check if maximum vertex number is reached
507 {
508 fNvmax++;
509 fVertices->Expand(fNvmax);
510 }
29beb80d 511
512 // Add the linked (secondary) vertex to the list
6516b62d 513 AliVertex* vx=&v;
514 if (fVertexCopy) vx=new AliVertex(v);
515
516 if (vx)
f34f4acb 517 {
6516b62d 518 fNvtx++;
519 fVertices->Add(vx);
520 }
29beb80d 521
522 // Create connecting track and update 4-momentum and charge for current vertex
523 if (connect)
524 {
43bfa5be 525 AliTrack* t=new AliTrack();
6516b62d 526 t->SetBeginPoint(GetPosition());
527 t->SetEndPoint(v.GetPosition());
528 t->SetCharge(v.GetCharge());
529 t->Set4Momentum((Ali4Vector&)v);
29beb80d 530
6516b62d 531 AddTrack(t,0);
29beb80d 532
6516b62d 533 if (!fConnects)
534 {
535 fConnects=new TObjArray(fNvmax);
536 if (!fTrackCopy) fConnects->SetOwner();
537 }
29beb80d 538 fConnects->Add(t);
539 }
d88f97cc 540}
541///////////////////////////////////////////////////////////////////////////
84bb7c66 542void AliVertex::Data(TString f)
d88f97cc 543{
544// Provide vertex information within the coordinate frame f
387a745b 545 cout << " *AliVertex::Data* Name : " << GetName() << " Title : " << GetTitle() << endl;
546 cout << " Id : " << fUserId << " Invmass : " << GetInvmass()
d88f97cc 547 << " Charge : " << GetCharge() << " Momentum : " << GetMomentum()
f34f4acb 548 << " Ntracks : " << GetNtracks() << " Nvertices : " << fNvtx
549 << " Njets : " << fNjets << endl;
d88f97cc 550 cout << " ";
84bb7c66 551 Ali4Vector::Data(f);
d88f97cc 552 cout << " Position";
84bb7c66 553 AliPosition::Data(f);
d88f97cc 554}
555///////////////////////////////////////////////////////////////////////////
556void AliVertex::List(TString f)
557{
558// Provide primary track and sec. vertex information within the coordinate frame f
559
84bb7c66 560 Data(f); // Information of the current vertex
d88f97cc 561
562 // The tracks of this vertex
563 AliTrack* t;
564 for (Int_t it=1; it<=GetNtracks(); it++)
565 {
566 t=GetTrack(it);
567 if (t)
568 {
569 cout << " ---Track no. " << it << endl;
570 cout << " ";
84bb7c66 571 t->Data(f);
d88f97cc 572 }
573 else
574 {
575 cout << " *AliVertex::List* Error : No track present." << endl;
576 }
577 }
578
579 // The secondary vertices of this vertex
580 AliVertex* v;
581 for (Int_t iv=1; iv<=GetNvertices(); iv++)
582 {
583 v=GetVertex(iv);
584 if (v)
585 {
586 cout << " ---Level 1 sec. vertex no. " << iv << endl;
587 cout << " ";
84bb7c66 588 v->Data(f);
d88f97cc 589 }
590 else
591 {
592 cout << " *AliVertex::List* Error : No sec. vertex present." << endl;
593 }
594 }
595}
596///////////////////////////////////////////////////////////////////////////
597void AliVertex::ListAll(TString f)
598{
599// Provide complete (sec) vertex and (decay) track info within the coordinate frame f
600
84bb7c66 601 Data(f); // Information of the current vertex
d88f97cc 602
603 // The tracks of this vertex
604 AliTrack* t;
605 for (Int_t it=1; it<=GetNtracks(); it++)
606 {
607 t=GetTrack(it);
608 if (t)
609 {
610 cout << " ---Track no. " << it << endl;
611 cout << " ";
612 t->ListAll(f);
613 }
614 else
615 {
616 cout << " *AliVertex::ListAll* Error : No track present." << endl;
617 }
618 }
619
620 AliVertex* v=this;
1c01b4f8 621 Dumps(v,1,f); // Information of all sec. vertices
d88f97cc 622}
623//////////////////////////////////////////////////////////////////////////
1c01b4f8 624void AliVertex::Dumps(AliVertex* v,Int_t n,TString f)
d88f97cc 625{
626// Recursively provide the info of all secondary vertices of this vertex
627 AliVertex* vs;
628 for (Int_t iv=1; iv<=v->GetNvertices(); iv++)
629 {
630 vs=v->GetVertex(iv);
631 if (vs)
632 {
633 cout << " ---Level " << n << " sec. vertex no. " << iv << endl;
634 cout << " ";
84bb7c66 635 vs->Data(f);
d88f97cc 636
637 // The tracks of this vertex
638 AliTrack* t;
639 for (Int_t it=1; it<=vs->GetNtracks(); it++)
640 {
641 t=vs->GetTrack(it);
642 if (t)
643 {
644 cout << " ---Track no. " << it << endl;
645 cout << " ";
646 t->ListAll(f);
647 }
648 else
649 {
1c01b4f8 650 cout << " *AliVertex::Dumps* Error : No track present." << endl;
d88f97cc 651 }
652 }
653
654 // Go for next sec. vertex level of this sec. vertex recursively
1c01b4f8 655 Dumps(vs,n+1,f);
d88f97cc 656 }
657 else
658 {
1c01b4f8 659 cout << " *AliVertex::Dumps* Error : No sec. vertex present." << endl;
d88f97cc 660 }
661 }
662}
663//////////////////////////////////////////////////////////////////////////
664Int_t AliVertex::GetNvertices()
665{
666// Return the current number of (secondary) vertices
667 return fNvtx;
668}
669///////////////////////////////////////////////////////////////////////////
670AliVertex* AliVertex::GetVertex(Int_t i)
671{
672// Return the i-th (secondary) vertex of the current vertex
f34f4acb 673 if (!fVertices)
674 {
675 cout << " *AliVertex*::GetVertex* No (secondary) vertices present." << endl;
676 return 0;
677 }
678 else
679 {
680 if (i<=0 || i>fNvtx)
681 {
682 cout << " *AliVertex*::GetVertex* Invalid argument i : " << i
683 << " Nvtx = " << fNvtx << endl;
684 return 0;
685 }
686 else
687 {
688 return (AliVertex*)fVertices->At(i-1);
689 }
690 }
691}
692///////////////////////////////////////////////////////////////////////////
43bfa5be 693AliVertex* AliVertex::GetIdVertex(Int_t id)
694{
695// Return the (sec.) vertex with user identifier "id"
696 AliVertex* vx=0;
697 AliVertex* v=0;
698 if (!fVertices)
699 {
700 cout << " *AliVertex*::GetIdVertex* No (secondary) vertices present." << endl;
701 return 0;
702 }
703 else
704 {
705 for (Int_t i=0; i<fNvtx; i++)
706 {
707 vx=(AliVertex*)fVertices->At(i);
708 if (id == vx->GetId()) v=vx;
709 }
710 return v;
711 }
712}
713///////////////////////////////////////////////////////////////////////////
f34f4acb 714void AliVertex::SetVertexCopy(Int_t j)
715{
716// (De)activate the creation of private copies of the added vertices.
717// j=0 ==> No private copies are made; pointers of original vertices are stored.
718// j=1 ==> Private copies of the vertices are made and these pointers are stored.
719//
720// Note : Once the storage contains pointer(s) to AliVertex objects one cannot
721// change the VertexCopy mode anymore.
722// To change the VertexCopy mode for an existing AliVertex containing
723// vertices one first has to invoke Reset().
724 if (!fVertices)
725 {
726 if (j==0 || j==1)
727 {
728 fVertexCopy=j;
729 }
730 else
731 {
732 cout << "*AliVertex::SetVertexCopy* Invalid argument : " << j << endl;
733 }
734 }
735 else
736 {
737 cout << "*AliVertex::SetVertexCopy* Storage already contained vertices."
738 << " ==> VertexCopy mode not changed." << endl;
739 }
740}
741///////////////////////////////////////////////////////////////////////////
742Int_t AliVertex::GetVertexCopy()
743{
744// Provide value of the VertexCopy mode.
745// 0 ==> No private copies are made; pointers of original vertices are stored.
746// 1 ==> Private copies of the vertices are made and these pointers are stored.
747 return fVertexCopy;
748}
749///////////////////////////////////////////////////////////////////////////
750Int_t AliVertex::GetNjets()
751{
752// Return the current number of jets
753 return fNjets;
754}
755///////////////////////////////////////////////////////////////////////////
756AliJet* AliVertex::GetJet(Int_t i)
757{
758// Return the i-th jet of the current vertex
759 if (!fJets)
760 {
761 cout << " *AliVertex*::GetJet* No jets present." << endl;
762 return 0;
763 }
764 else
765 {
766 if (i<=0 || i>fNjets)
767 {
768 cout << " *AliVertex*::GetJet* Invalid argument i : " << i
769 << " Njets = " << fNjets << endl;
770 return 0;
771 }
772 else
773 {
774 return (AliJet*)fJets->At(i-1);
775 }
776 }
777}
778///////////////////////////////////////////////////////////////////////////
43bfa5be 779AliJet* AliVertex::GetIdJet(Int_t id)
780{
781// Return the jet with user identifier "id"
782 AliJet* jx=0;
783 AliJet* j=0;
784 if (!fJets)
785 {
786 cout << " *AliVertex*::GetIdJet* No jets present." << endl;
787 return 0;
788 }
789 else
790 {
791 for (Int_t i=0; i<fNjets; i++)
792 {
793 jx=(AliJet*)fJets->At(i);
794 if (id == jx->GetId()) j=jx;
795 }
796 return j;
797 }
798}
799///////////////////////////////////////////////////////////////////////////
f34f4acb 800void AliVertex::SetJetCopy(Int_t j)
801{
802// (De)activate the creation of private copies of the added jets.
803// j=0 ==> No private copies are made; pointers of original jets are stored.
804// j=1 ==> Private copies of the jets are made and these pointers are stored.
805//
806// Note : Once the storage contains pointer(s) to AliJet objects one cannot
807// change the JetCopy mode anymore.
808// To change the JetCopy mode for an existing AliVertex containing
809// jets one first has to invoke Reset().
810 if (!fJets)
811 {
812 if (j==0 || j==1)
813 {
814 fJetCopy=j;
815 }
816 else
817 {
818 cout << "*AliVertex::SetJetCopy* Invalid argument : " << j << endl;
819 }
820 }
821 else
822 {
823 cout << "*AliVertex::SetJetCopy* Storage already contained jets."
824 << " ==> JetCopy mode not changed." << endl;
825 }
826}
827///////////////////////////////////////////////////////////////////////////
828Int_t AliVertex::GetJetCopy()
829{
830// Provide value of the JetCopy mode.
831// 0 ==> No private copies are made; pointers of original jets are stored.
832// 1 ==> Private copies of the jets are made and these pointers are stored.
833 return fJetCopy;
d88f97cc 834}
835///////////////////////////////////////////////////////////////////////////
6516b62d 836Int_t AliVertex::IsConnectTrack(AliTrack* t)
837{
838// Indicate whether a track from the tracklist was created via the
839// connection of a (secondary) vertex or not.
840// In case the track was the result of (secondary) vertex addition the
841// return value is 1, otherwise the value 0 will be returned.
842 Int_t connect=0;
843 if (fConnects)
844 {
845 if (fConnects->FindObject(t)) connect=1;
846 }
847 return connect;
848}
849///////////////////////////////////////////////////////////////////////////
850Int_t AliVertex::IsJetTrack(AliTrack* t)
851{
852// Indicate whether a track from the tracklist was created via the
853// addition of a jet or not.
854// In case the track was the result of jet addition the return value is 1,
855// otherwise the value 0 will be returned.
856 Int_t jetflag=0;
857 if (fJetTracks)
858 {
859 if (fJetTracks->FindObject(t)) jetflag=1;
860 }
861 return jetflag;
862}
863///////////////////////////////////////////////////////////////////////////
a37bb40e 864void AliVertex::Draw(Int_t secs,Int_t cons,Int_t jets)
865{
866// 3-Dimensional visualisation of an AliVertex with its attributes.
867// The displayed tracklength is proportional to the momentum of the track.
868//
869// Color conventions :
870// -------------------
871// positive track : red
872// neutral track : green
873// negative track : blue
874// jet-track : magenta (if explicit marking selected)
875//
1c01b4f8 876// secs = 1 --> Draw secondary vertices. (Default)
a37bb40e 877// 0 --> Don't draw secondary vertices.
878//
1c01b4f8 879// cons = 1 --> Draw (auto generated) connecting tracks. (Default)
a37bb40e 880// 0 --> Don't draw (auto generated) connecting tracks.
881//
882// jets = 1 --> Mark tracks belonging to jets.
1c01b4f8 883// 0 --> Don't mark jet-tracks. (Default)
a37bb40e 884//
885// Notes :
886// -------
887// Auto generated connecting tracks will be drawn as thin lines.
888// Tracks belonging to jets will be marked as somewhat thinner magenta lines.
889// This memberfunction is used recursively.
890//
891 Double_t vec[3]={0,0,0};
892 AliTrack* tx=0;
893 AliVertex* vx=0;
c72198f1 894 AliPosition* r=0;
a37bb40e 895 Ali3Vector p;
1c01b4f8 896 Float_t charge;
a37bb40e 897
c72198f1 898 AliPosition dummy;
899
a37bb40e 900 if (fLines) delete fLines;
901 fLines=new TObjArray();
902 fLines->SetOwner();
903
904 Int_t ntk=GetNtracks();
905 for (Int_t jtk=1; jtk<=ntk; jtk++)
906 {
907 tx=GetTrack(jtk);
908
909 if (!tx) continue;
910
1c01b4f8 911 charge=tx->GetCharge();
a37bb40e 912
913 TPolyLine3D* line=new TPolyLine3D();
914 fLines->Add(line);
915
916 if (IsConnectTrack(tx))
917 {
918 if (cons==1)
919 {
920 r=tx->GetBeginPoint();
c72198f1 921 if (!r) r=&dummy;
922 r->GetPosition(vec,"car");
a37bb40e 923 line->SetNextPoint(vec[0],vec[1],vec[2]);
924 r=tx->GetEndPoint();
c72198f1 925 if (!r) r=&dummy;
926 r->GetPosition(vec,"car");
a37bb40e 927 line->SetNextPoint(vec[0],vec[1],vec[2]);
928 line->SetLineWidth(1);
929 }
930 }
931 else
932 {
933 r=tx->GetClosestPoint();
c72198f1 934 if (!r) r=&dummy;
935 r->GetPosition(vec,"car");
a37bb40e 936 line->SetNextPoint(vec[0],vec[1],vec[2]);
937 p=tx->Get3Momentum();
c72198f1 938 p=p+(*r);
a37bb40e 939 p.GetVector(vec,"car");
940 line->SetNextPoint(vec[0],vec[1],vec[2]);
941 line->SetLineWidth(3);
942 }
943
1c01b4f8 944 line->SetLineColor(kGreen); // Neutral track
945 if (charge>0) line->SetLineColor(kRed); // Positive track
946 if (charge<0) line->SetLineColor(kBlue); // Negative track
a37bb40e 947
948 // Mark tracks belonging to jets
949 if (IsJetTrack(tx))
950 {
951 if (jets==1)
952 {
953 line->SetLineWidth(2);
954 line->SetLineColor(kMagenta);
955 }
956 }
957
958 line->Draw();
959 }
960
961 // Go for secondary vertices if selected
962 if (secs==1)
963 {
964 Int_t nvtx=GetNvertices();
965 for (Int_t jvtx=1; jvtx<=nvtx; jvtx++)
966 {
967 vx=GetVertex(jvtx);
968 if (vx) vx->Draw(secs,cons,jets);
969 }
970 }
971}
972///////////////////////////////////////////////////////////////////////////