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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 AliJet | |
20 | // Creation and investigation of a jet of particle tracks. | |
21 | // An AliJet can be constructed by adding AliTracks. | |
22 | // | |
c1f25d1d | 23 | // To provide maximal flexibility to the user, two modes of track storage |
24 | // are provided by means of the memberfunction SetTrackCopy(). | |
25 | // | |
26 | // a) SetTrackCopy(0) (which is the default). | |
27 | // Only the pointers of the 'added' tracks are stored. | |
28 | // This mode is typically used by making jet studies based on a fixed list | |
29 | // of tracks which stays under user control or is contained for instance | |
30 | // in an AliEvent. | |
31 | // In this way the AliJet just represents a 'logical structure' for the | |
32 | // physics analysis which can be embedded in e.g. an AliEvent or AliVertex. | |
35044448 | 33 | // |
34 | // Note : | |
c1f25d1d | 35 | // Modifications made to the original tracks also affect the AliTrack objects |
36 | // which are stored in the AliJet. | |
35044448 | 37 | // |
c1f25d1d | 38 | // b) SetTrackCopy(1). |
39 | // Of every 'added' track a private copy will be made of which the pointer | |
40 | // will be stored. | |
41 | // In this way the AliJet represents an entity on its own and modifications | |
42 | // made to the original tracks do not affect the AliTrack objects which are | |
43 | // stored in the AliJet. | |
44 | // This mode will allow 'adding' many different AliTracks into an AliJet by | |
45 | // creating only one AliTrack instance in the main programme and using the | |
46 | // AliTrack::Reset() and AliTrack parameter setting memberfunctions. | |
47 | // | |
8e8e6c7f | 48 | // See also the documentation provided for the memberfunction SetOwner(). |
49 | // | |
959fbac5 | 50 | // Coding example to make 2 jets j1 and j2. |
51 | // ---------------------------------------- | |
c1f25d1d | 52 | // j1 contains the AliTracks t1 and t2 |
53 | // j2 contains 10 different AliTracks via tx | |
959fbac5 | 54 | // |
c1f25d1d | 55 | // AliTrack t1,t2; |
959fbac5 | 56 | // ... |
57 | // ... // code to fill the AliTrack data | |
58 | // ... | |
c1f25d1d | 59 | // AliJet j1(); |
f531a546 | 60 | // j1.AddTrack(t1); |
61 | // j1.AddTrack(t2); | |
c1f25d1d | 62 | // |
63 | // AliJet j2(); | |
64 | // j2.SetTrackCopy(1); | |
65 | // AliTrack* tx=new AliTrack(); | |
66 | // for (Int_t i=0; i<10; i++) | |
67 | // { | |
68 | // ... | |
69 | // ... // code to set momentum etc... of the track tx | |
70 | // ... | |
71 | // j2.AddTrack(tx); | |
72 | // tx->Reset(); | |
73 | // } | |
959fbac5 | 74 | // |
84bb7c66 | 75 | // j1.Data(); |
76 | // j2.Data("sph"); | |
959fbac5 | 77 | // |
78 | // Float_t e1=j1.GetEnergy(); | |
79 | // Float_t pnorm=j1->GetMomentum(); | |
80 | // Ali3Vector p=j1->Get3Momentum(); | |
81 | // Float_t m=j1.GetInvmass(); | |
82 | // Int_t ntk=j1.GetNtracks(); | |
83 | // AliTrack* tj=j1.GetTrack(1); | |
84 | // | |
c1f25d1d | 85 | // delete tx; |
86 | // | |
959fbac5 | 87 | // Note : All quantities are in GeV, GeV/c or GeV/c**2 |
88 | // | |
89 | //--- Author: Nick van Eijndhoven 10-jul-1997 UU-SAP Utrecht | |
f531a546 | 90 | //- Modified: NvE $Date$ UU-SAP Utrecht |
959fbac5 | 91 | /////////////////////////////////////////////////////////////////////////// |
92 | ||
d88f97cc | 93 | #include "AliJet.h" |
c72198f1 | 94 | #include "Riostream.h" |
d88f97cc | 95 | |
96 | ClassImp(AliJet) // Class implementation to enable ROOT I/O | |
97 | ||
387a745b | 98 | AliJet::AliJet() : TNamed(),Ali4Vector() |
d88f97cc | 99 | { |
100 | // Default constructor | |
101 | // All variables initialised to 0 | |
102 | // Initial maximum number of tracks is set to the default value | |
6516b62d | 103 | Init(); |
104 | Reset(); | |
105 | SetNtinit(); | |
387a745b | 106 | SetName("Unspecified"); |
107 | SetTitle("Unspecified"); | |
6516b62d | 108 | } |
109 | /////////////////////////////////////////////////////////////////////////// | |
110 | void AliJet::Init() | |
111 | { | |
112 | // Initialisation of pointers etc... | |
d88f97cc | 113 | fTracks=0; |
114 | fNtinit=0; | |
c1f25d1d | 115 | fTrackCopy=0; |
d88f97cc | 116 | } |
117 | /////////////////////////////////////////////////////////////////////////// | |
387a745b | 118 | AliJet::AliJet(Int_t n) : TNamed(),Ali4Vector() |
d88f97cc | 119 | { |
120 | // Create a jet to hold initially a maximum of n tracks | |
121 | // All variables initialised to 0 | |
6516b62d | 122 | Init(); |
d88f97cc | 123 | Reset(); |
124 | if (n > 0) | |
125 | { | |
126 | SetNtinit(n); | |
127 | } | |
128 | else | |
129 | { | |
130 | cout << endl; | |
131 | cout << " *AliJet* Initial max. number of tracks entered : " << n << endl; | |
132 | cout << " This is invalid. Default initial maximum will be used." << endl; | |
133 | cout << endl; | |
134 | SetNtinit(); | |
135 | } | |
387a745b | 136 | SetName("Unspecified"); |
137 | SetTitle("Unspecified"); | |
d88f97cc | 138 | } |
139 | /////////////////////////////////////////////////////////////////////////// | |
140 | AliJet::~AliJet() | |
141 | { | |
142 | // Default destructor | |
c1f25d1d | 143 | if (fTracks) |
144 | { | |
c1f25d1d | 145 | delete fTracks; |
146 | fTracks=0; | |
147 | } | |
d88f97cc | 148 | } |
149 | /////////////////////////////////////////////////////////////////////////// | |
8e8e6c7f | 150 | void AliJet::SetOwner(Bool_t own) |
151 | { | |
152 | // Set ownership of all added objects. | |
153 | // The default parameter is own=kTRUE. | |
154 | // | |
155 | // Invokation of this memberfunction also sets all the copy modes | |
156 | // (e.g. TrackCopy & co.) according to the value of own. | |
157 | // | |
158 | // This function (with own=kTRUE) is particularly useful when reading data | |
159 | // from a tree/file, since Reset() will then actually remove all the | |
160 | // added objects from memory irrespective of the copy mode settings | |
161 | // during the tree/file creation process. In this way it provides a nice way | |
162 | // of preventing possible memory leaks in the reading/analysis process. | |
163 | // | |
164 | // In addition this memberfunction can also be used as a shortcut to set all | |
165 | // copy modes in one go during a tree/file creation process. | |
166 | // However, in this case the user has to take care to only set/change the | |
167 | // ownership (and copy mode) for empty objects (e.g. newly created objects | |
168 | // or after invokation of the Reset() memberfunction) otherwise it will | |
169 | // very likely result in inconsistent destructor behaviour. | |
170 | ||
171 | Int_t mode=1; | |
172 | if (!own) mode=0; | |
173 | if (fTracks) fTracks->SetOwner(own); | |
174 | fTrackCopy=mode; | |
175 | } | |
176 | /////////////////////////////////////////////////////////////////////////// | |
387a745b | 177 | AliJet::AliJet(AliJet& j) : TNamed(j),Ali4Vector(j) |
6516b62d | 178 | { |
179 | // Copy constructor | |
c72198f1 | 180 | fNtinit=j.fNtinit; |
181 | fNtmax=j.fNtmax; | |
182 | fQ=j.fQ; | |
183 | fNtrk=j.fNtrk; | |
184 | fTrackCopy=j.fTrackCopy; | |
185 | fUserId=j.fUserId; | |
186 | ||
187 | fTracks=0; | |
188 | if (fNtrk) | |
189 | { | |
190 | fTracks=new TObjArray(fNtmax); | |
191 | if (fTrackCopy) fTracks->SetOwner(); | |
192 | } | |
6516b62d | 193 | |
c72198f1 | 194 | for (Int_t i=1; i<=fNtrk; i++) |
6516b62d | 195 | { |
c72198f1 | 196 | AliTrack* tx=j.GetTrack(i); |
197 | if (fTrackCopy) | |
198 | { | |
199 | fTracks->Add(new AliTrack(*tx)); | |
200 | } | |
201 | else | |
202 | { | |
203 | fTracks->Add(tx); | |
204 | } | |
6516b62d | 205 | } |
206 | } | |
207 | /////////////////////////////////////////////////////////////////////////// | |
d88f97cc | 208 | void AliJet::SetNtinit(Int_t n) |
209 | { | |
210 | // Set the initial maximum number of tracks for this jet | |
211 | fNtinit=n; | |
212 | fNtmax=n; | |
79830a7e | 213 | if (fTracks) |
c1f25d1d | 214 | { |
c1f25d1d | 215 | delete fTracks; |
216 | fTracks=0; | |
217 | } | |
d88f97cc | 218 | } |
219 | /////////////////////////////////////////////////////////////////////////// | |
220 | void AliJet::Reset() | |
221 | { | |
222 | // Reset all variables to 0 | |
223 | // The max. number of tracks is set to the initial value again | |
224 | fNtrk=0; | |
225 | fQ=0; | |
43bfa5be | 226 | fUserId=0; |
d88f97cc | 227 | Double_t a[4]={0,0,0,0}; |
228 | SetVector(a,"sph"); | |
229 | if (fNtinit > 0) SetNtinit(fNtinit); | |
230 | } | |
231 | /////////////////////////////////////////////////////////////////////////// | |
1fbffa23 | 232 | void AliJet::AddTrack(AliTrack& t) |
d88f97cc | 233 | { |
35044448 | 234 | // Add a track to the jet. |
d88f97cc | 235 | // In case the maximum number of tracks has been reached |
236 | // space will be extended to hold an additional amount of tracks as | |
35044448 | 237 | // was initially reserved. |
1fbffa23 | 238 | // See SetTrackCopy() to tailor the functionality of the stored structures. |
239 | AddTrack(t,1); | |
240 | } | |
241 | /////////////////////////////////////////////////////////////////////////// | |
242 | void AliJet::AddTrack(AliTrack& t,Int_t copy) | |
243 | { | |
244 | // Internal memberfunction to actually add a track to the jet. | |
245 | // In case the maximum number of tracks has been reached | |
246 | // space will be extended to hold an additional amount of tracks as | |
247 | // was initially reserved. | |
248 | // | |
249 | // If copy=0 NO copy of the track will be made, irrespective of the setting | |
250 | // of the TrackCopy flag. | |
251 | // This allows a proper treatment of automatically generated connecting | |
252 | // tracks between vertices. | |
6516b62d | 253 | if (!fTracks) |
254 | { | |
255 | fTracks=new TObjArray(fNtmax); | |
256 | if (fTrackCopy) fTracks->SetOwner(); | |
257 | } | |
d88f97cc | 258 | if (fNtrk == fNtmax) // Check if maximum track number is reached |
259 | { | |
260 | fNtmax+=fNtinit; | |
261 | fTracks->Expand(fNtmax); | |
262 | } | |
263 | ||
264 | // Add the track to this jet | |
265 | fNtrk++; | |
6516b62d | 266 | if (fTrackCopy && copy) |
c1f25d1d | 267 | { |
6516b62d | 268 | fTracks->Add(new AliTrack(t)); |
c1f25d1d | 269 | } |
270 | else | |
271 | { | |
272 | fTracks->Add(&t); | |
273 | } | |
35044448 | 274 | |
d88f97cc | 275 | (*this)+=(Ali4Vector&)t; |
276 | fQ+=t.GetCharge(); | |
35044448 | 277 | |
d88f97cc | 278 | } |
279 | /////////////////////////////////////////////////////////////////////////// | |
84bb7c66 | 280 | void AliJet::Data(TString f) |
d88f97cc | 281 | { |
282 | // Provide jet information within the coordinate frame f | |
387a745b | 283 | cout << " *AliJet::Data* Name : " << GetName() << " Title : " << GetTitle() << endl; |
284 | cout << " Id : " << fUserId << " Invmass : " << GetInvmass() << " Charge : " << fQ | |
d88f97cc | 285 | << " Momentum : " << GetMomentum() << " Ntracks : " << fNtrk << endl; |
c72198f1 | 286 | |
84bb7c66 | 287 | Ali4Vector::Data(f); |
d88f97cc | 288 | } |
289 | /////////////////////////////////////////////////////////////////////////// | |
290 | void AliJet::List(TString f) | |
291 | { | |
292 | // Provide jet and primary track information within the coordinate frame f | |
293 | ||
84bb7c66 | 294 | Data(f); // Information of the current jet |
d88f97cc | 295 | |
296 | // The tracks of this jet | |
297 | AliTrack* t; | |
298 | for (Int_t it=1; it<=fNtrk; it++) | |
299 | { | |
300 | t=GetTrack(it); | |
301 | if (t) | |
302 | { | |
303 | cout << " ---Track no. " << it << endl; | |
304 | cout << " "; | |
84bb7c66 | 305 | t->Data(f); |
d88f97cc | 306 | } |
307 | else | |
308 | { | |
309 | cout << " *AliJet::List* Error : No track present." << endl; | |
310 | } | |
311 | } | |
312 | } | |
313 | /////////////////////////////////////////////////////////////////////////// | |
314 | void AliJet::ListAll(TString f) | |
315 | { | |
316 | // Provide jet and prim.+sec. track information within the coordinate frame f | |
317 | ||
84bb7c66 | 318 | Data(f); // Information of the current jet |
d88f97cc | 319 | |
320 | // The tracks of this jet | |
321 | AliTrack* t; | |
322 | for (Int_t it=1; it<=fNtrk; it++) | |
323 | { | |
324 | t=GetTrack(it); | |
325 | if (t) | |
326 | { | |
327 | cout << " ---Track no. " << it << endl; | |
328 | cout << " "; | |
329 | t->ListAll(f); | |
330 | } | |
331 | else | |
332 | { | |
333 | cout << " *AliJet::List* Error : No track present." << endl; | |
334 | } | |
335 | } | |
336 | } | |
337 | /////////////////////////////////////////////////////////////////////////// | |
338 | Int_t AliJet::GetNtracks() | |
339 | { | |
340 | // Return the current number of tracks of this jet | |
341 | return fNtrk; | |
342 | } | |
343 | /////////////////////////////////////////////////////////////////////////// | |
344 | Double_t AliJet::GetEnergy() | |
345 | { | |
346 | // Return the total energy of the jet | |
347 | return GetScalar(); | |
348 | } | |
349 | /////////////////////////////////////////////////////////////////////////// | |
350 | Double_t AliJet::GetMomentum() | |
351 | { | |
352 | // Return the value of the total jet 3-momentum | |
d071d629 | 353 | // The error can be obtained by invoking GetResultError() after |
354 | // invokation of GetMomentum(). | |
355 | Double_t norm=fV.GetNorm(); | |
356 | fDresult=fV.GetResultError(); | |
357 | return norm; | |
d88f97cc | 358 | } |
359 | /////////////////////////////////////////////////////////////////////////// | |
360 | Ali3Vector AliJet::Get3Momentum() | |
361 | { | |
362 | // Return the the total jet 3-momentum | |
363 | Ali3Vector p=Get3Vector(); | |
364 | return p; | |
365 | } | |
366 | /////////////////////////////////////////////////////////////////////////// | |
367 | Double_t AliJet::GetInvmass() | |
368 | { | |
369 | // Return the invariant mass of the jet | |
370 | Double_t m2=Dot(*this); | |
371 | if (m2>0) | |
372 | { | |
373 | return sqrt(m2); | |
374 | } | |
375 | else | |
376 | { | |
377 | return 0; | |
378 | } | |
379 | } | |
380 | /////////////////////////////////////////////////////////////////////////// | |
381 | Float_t AliJet::GetCharge() | |
382 | { | |
383 | // Return the total charge of the jet | |
384 | return fQ; | |
385 | } | |
386 | /////////////////////////////////////////////////////////////////////////// | |
387 | AliTrack* AliJet::GetTrack(Int_t i) | |
388 | { | |
389 | // Return the i-th track of this jet | |
f34f4acb | 390 | if (!fTracks) |
391 | { | |
392 | cout << " *AliJet*::GetTrack* No tracks present." << endl; | |
393 | return 0; | |
394 | } | |
395 | else | |
396 | { | |
397 | if (i<=0 || i>fNtrk) | |
398 | { | |
399 | cout << " *AliJet*::GetTrack* Invalid argument i : " << i | |
400 | << " Ntrk = " << fNtrk << endl; | |
401 | return 0; | |
402 | } | |
403 | else | |
404 | { | |
405 | return (AliTrack*)fTracks->At(i-1); | |
406 | } | |
407 | } | |
d88f97cc | 408 | } |
409 | /////////////////////////////////////////////////////////////////////////// | |
43bfa5be | 410 | AliTrack* AliJet::GetIdTrack(Int_t id) |
411 | { | |
412 | // Return the track with user identifier "id" of this jet | |
413 | AliTrack* tx=0; | |
414 | AliTrack* t=0; | |
415 | if (!fTracks) | |
416 | { | |
417 | cout << " *AliJet*::GetIdTrack* No tracks present." << endl; | |
418 | return 0; | |
419 | } | |
420 | else | |
421 | { | |
422 | for (Int_t i=0; i<fNtrk; i++) | |
423 | { | |
424 | tx=(AliTrack*)fTracks->At(i); | |
425 | if (id == tx->GetId()) t=tx; | |
426 | } | |
427 | return t; | |
428 | } | |
429 | } | |
430 | /////////////////////////////////////////////////////////////////////////// | |
d071d629 | 431 | Double_t AliJet::GetPt() |
432 | { | |
433 | // Provide trans. momentum value w.r.t. z-axis. | |
434 | // The error on the value can be obtained by GetResultError() | |
435 | // after invokation of GetPt(). | |
436 | Ali3Vector v; | |
437 | v=GetVecTrans(); | |
438 | Double_t norm=v.GetNorm(); | |
439 | fDresult=v.GetResultError(); | |
440 | ||
441 | return norm; | |
442 | } | |
443 | /////////////////////////////////////////////////////////////////////////// | |
444 | Double_t AliJet::GetPl() | |
445 | { | |
446 | // Provide long. momentum value w.r.t. z-axis. | |
8adaf597 | 447 | // Note : the returned value can also be negative. |
d071d629 | 448 | // The error on the value can be obtained by GetResultError() |
449 | // after invokation of GetPl(). | |
450 | Ali3Vector v; | |
451 | v=GetVecLong(); | |
8adaf597 | 452 | |
453 | Double_t pl=v.GetNorm(); | |
d071d629 | 454 | fDresult=v.GetResultError(); |
455 | ||
8adaf597 | 456 | Double_t a[3]; |
457 | v.GetVector(a,"sph"); | |
458 | if (cos(a[1])<0) pl=-pl; | |
459 | ||
460 | return pl; | |
d071d629 | 461 | } |
462 | /////////////////////////////////////////////////////////////////////////// | |
463 | Double_t AliJet::GetEt() | |
464 | { | |
465 | // Provide trans. energy value w.r.t. z-axis. | |
466 | // The error on the value can be obtained by GetResultError() | |
467 | // after invokation of GetEt(). | |
468 | Double_t et=GetScaTrans(); | |
469 | ||
470 | return et; | |
471 | } | |
472 | /////////////////////////////////////////////////////////////////////////// | |
473 | Double_t AliJet::GetEl() | |
474 | { | |
475 | // Provide long. energy value w.r.t. z-axis. | |
8adaf597 | 476 | // Note : the returned value can also be negative. |
d071d629 | 477 | // The error on the value can be obtained by GetResultError() |
478 | // after invokation of GetEl(). | |
479 | Double_t el=GetScaLong(); | |
480 | ||
481 | return el; | |
482 | } | |
483 | /////////////////////////////////////////////////////////////////////////// | |
484 | Double_t AliJet::GetMt() | |
485 | { | |
486 | // Provide transverse mass value w.r.t. z-axis. | |
487 | // The error on the value can be obtained by GetResultError() | |
488 | // after invokation of GetMt(). | |
489 | Double_t pt=GetPt(); | |
490 | Double_t dpt=GetResultError(); | |
491 | Double_t m=GetInvmass(); | |
492 | Double_t dm=GetResultError(); | |
493 | ||
494 | Double_t mt=sqrt(pt*pt+m*m); | |
495 | Double_t dmt2=0; | |
496 | if (mt) dmt2=(pow((pt*dpt),2)+pow((m*dm),2))/(mt*mt); | |
497 | ||
498 | fDresult=sqrt(dmt2); | |
499 | return mt; | |
500 | } | |
501 | /////////////////////////////////////////////////////////////////////////// | |
8adaf597 | 502 | Double_t AliJet::GetRapidity() |
503 | { | |
504 | // Provide rapidity value w.r.t. z-axis. | |
505 | // The error on the value can be obtained by GetResultError() | |
506 | // after invokation of GetRapidity(). | |
507 | // Note : Also GetPseudoRapidity() is available since this class is | |
508 | // derived from Ali4Vector. | |
509 | Double_t e=GetEnergy(); | |
510 | Double_t de=GetResultError(); | |
511 | Double_t pl=GetPl(); | |
512 | Double_t dpl=GetResultError(); | |
513 | Double_t sum=e+pl; | |
514 | Double_t dif=e-pl; | |
515 | ||
516 | Double_t y=9999,dy2=0; | |
517 | if (sum && dif) y=0.5*log(sum/dif); | |
518 | ||
519 | if (sum*dif) dy2=(1./(sum*dif))*(pow((pl*de),2)+pow((e*dpl),2)); | |
520 | ||
521 | fDresult=sqrt(dy2); | |
522 | return y; | |
523 | } | |
524 | /////////////////////////////////////////////////////////////////////////// | |
c1f25d1d | 525 | void AliJet::SetTrackCopy(Int_t j) |
526 | { | |
527 | // (De)activate the creation of private copies of the added tracks. | |
528 | // j=0 ==> No private copies are made; pointers of original tracks are stored. | |
529 | // j=1 ==> Private copies of the tracks are made and these pointers are stored. | |
530 | // | |
531 | // Note : Once the storage contains pointer(s) to AliTrack(s) one cannot | |
532 | // change the TrackCopy mode anymore. | |
533 | // To change the TrackCopy mode for an existing AliJet containing | |
534 | // tracks one first has to invoke Reset(). | |
535 | if (!fTracks) | |
536 | { | |
537 | if (j==0 || j==1) | |
538 | { | |
539 | fTrackCopy=j; | |
540 | } | |
541 | else | |
542 | { | |
543 | cout << "*AliJet::SetTrackCopy* Invalid argument : " << j << endl; | |
544 | } | |
545 | } | |
546 | else | |
547 | { | |
548 | cout << "*AliJet::SetTrackCopy* Storage already contained tracks." | |
549 | << " ==> TrackCopy mode not changed." << endl; | |
550 | } | |
551 | } | |
552 | /////////////////////////////////////////////////////////////////////////// | |
553 | Int_t AliJet::GetTrackCopy() | |
554 | { | |
555 | // Provide value of the TrackCopy mode. | |
556 | // 0 ==> No private copies are made; pointers of original tracks are stored. | |
557 | // 1 ==> Private copies of the tracks are made and these pointers are stored. | |
558 | return fTrackCopy; | |
559 | } | |
560 | /////////////////////////////////////////////////////////////////////////// | |
43bfa5be | 561 | void AliJet::SetId(Int_t id) |
562 | { | |
563 | // Set a user defined identifier for this jet. | |
564 | fUserId=id; | |
565 | } | |
566 | /////////////////////////////////////////////////////////////////////////// | |
567 | Int_t AliJet::GetId() | |
568 | { | |
569 | // Provide the user defined identifier of this jet. | |
570 | return fUserId; | |
571 | } | |
572 | /////////////////////////////////////////////////////////////////////////// |