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d16062ac | 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 | ||
8e8e6c7f | 16 | // $Id: AliEvent.cxx,v 1.6 2002/04/26 11:23:37 nick Exp $ |
d16062ac | 17 | |
18 | /////////////////////////////////////////////////////////////////////////// | |
19 | // Class AliEvent | |
20 | // Creation and investigation of an Alice physics event. | |
7849a8ab | 21 | // An AliEvent can be constructed by adding AliTracks, Alivertices, AliJets |
22 | // and/or AliCalorimeters. | |
d16062ac | 23 | // |
24 | // The basic functionality of AliEvent is identical to the one of AliVertex. | |
35044448 | 25 | // So, an AliEvent may be used as the primary vertex with some additional |
26 | // functionality compared to AliVertex. | |
d16062ac | 27 | // |
7849a8ab | 28 | // To provide maximal flexibility to the user, the two modes of track/jet/vertex |
29 | // storage as described in AliJet and AliVertex can be used. | |
30 | // In addition an identical structure is provided for the storage of AliCalorimeter | |
31 | // objects, which can be selected by means of the memberfunction SetCalCopy(). | |
32 | // | |
33 | // a) SetCalCopy(0) (which is the default). | |
34 | // Only the pointers of the 'added' calorimeters are stored. | |
35 | // This mode is typically used by making cal. studies based on a fixed set | |
36 | // of calorimeters which stays under user control or is kept on an external | |
37 | // file/tree. | |
38 | // In this way the AliEvent just represents a 'logical structure' for the | |
39 | // physics analysis. | |
35044448 | 40 | // |
41 | // Note : | |
7849a8ab | 42 | // Modifications made to the original calorimeters also affect the AliCalorimeter |
43 | // objects which are stored in the AliEvent. | |
35044448 | 44 | // |
7849a8ab | 45 | // b) SetCalCopy(1). |
46 | // Of every 'added' calorimeter a private copy will be made of which the pointer | |
47 | // will be stored. | |
48 | // In this way the AliEvent represents an entity on its own and modifications | |
49 | // made to the original calorimeters do not affect the AliCalorimeter objects | |
50 | // which are stored in the AliEvent. | |
51 | // This mode will allow 'adding' many different AliCalorimeters into an AliEvent by | |
52 | // creating only one AliCalorimeter instance in the main programme and using the | |
53 | // AliCalorimeter::Reset() and AliCalorimeter parameter setting memberfunctions. | |
54 | // | |
8e8e6c7f | 55 | // See also the documentation provided for the memberfunction SetOwner(). |
56 | // | |
7849a8ab | 57 | // Coding example to make an event consisting of a primary vertex, |
58 | // 2 secondary vertices and a calorimeter. | |
d16062ac | 59 | // -------------------------------------------------------------- |
7849a8ab | 60 | // vp contains the tracks 1,2,3 and 4 (primary vertex) |
61 | // v1 contains the tracks 5,6 and 7 (sec. vertex) | |
62 | // v2 contains the jets 1 and 2 (sec. vertex) | |
63 | // | |
7849a8ab | 64 | // AliEvent evt; |
65 | // | |
66 | // Specify the event object as the repository of all objects | |
67 | // for the event building and physics analysis. | |
68 | // | |
69 | // evt.SetCalCopy(1); | |
70 | // evt.SetTrackCopy(1); | |
71 | // | |
72 | // Fill the event structure with the basic objects | |
73 | // | |
35044448 | 74 | // AliCalorimeter emcal; |
75 | // ... | |
76 | // ... // code to fill the calorimeter data | |
77 | // ... | |
78 | // | |
7849a8ab | 79 | // evt.AddCalorimeter(emcal); |
80 | // | |
35044448 | 81 | // AliTrack* tx=new AliTrack(); |
7849a8ab | 82 | // for (Int_t i=0; i<10; i++) |
83 | // { | |
d16062ac | 84 | // ... |
85 | // ... // code to fill the track data | |
86 | // ... | |
7849a8ab | 87 | // evt.AddTrack(tx); |
88 | // tx->Reset(); | |
89 | // } | |
90 | // | |
35044448 | 91 | // if (tx) |
92 | // { | |
93 | // delete tx; | |
94 | // tx=0; | |
95 | // } | |
96 | // | |
7849a8ab | 97 | // Build the event structure (vertices, jets, ...) for physics analysis |
98 | // based on the basic objects from the event repository. | |
d16062ac | 99 | // |
100 | // AliJet j1,j2; | |
7849a8ab | 101 | // for (Int_t i=0; i<evt.GetNtracks(); i++) |
102 | // { | |
103 | // tx=evt.GetTrack(i); | |
d16062ac | 104 | // ... |
105 | // ... // code to fill the jet data | |
106 | // ... | |
7849a8ab | 107 | // } |
d16062ac | 108 | // |
7849a8ab | 109 | // AliVertex vp; |
35044448 | 110 | // tx=evt.GetTrack(1); |
7849a8ab | 111 | // vp.AddTrack(tx); |
35044448 | 112 | // tx=evt.GetTrack(2); |
7849a8ab | 113 | // vp.AddTrack(tx); |
35044448 | 114 | // tx=evt.GetTrack(3); |
7849a8ab | 115 | // vp.AddTrack(tx); |
35044448 | 116 | // tx=evt.GetTrack(4); |
7849a8ab | 117 | // vp.AddTrack(tx); |
d16062ac | 118 | // |
7849a8ab | 119 | // Float_t rp[3]={2.4,0.1,-8.5}; |
120 | // vp.SetPosition(rp,"car"); | |
d16062ac | 121 | // |
7849a8ab | 122 | // AliVertex v1; |
35044448 | 123 | // tx=evt.GetTrack(5); |
7849a8ab | 124 | // v1.AddTrack(tx); |
35044448 | 125 | // tx=evt.GetTrack(6); |
7849a8ab | 126 | // v1.AddTrack(tx); |
35044448 | 127 | // tx=evt.GetTrack(7); |
7849a8ab | 128 | // v1.AddTrack(tx); |
d16062ac | 129 | // |
130 | // Float_t r1[3]={1.6,-3.2,5.7}; | |
131 | // v1.SetPosition(r1,"car"); | |
132 | // | |
d16062ac | 133 | // |
7849a8ab | 134 | // AliVertex v2; |
135 | // v2.SetJetCopy(1); | |
d16062ac | 136 | // v2.AddJet(j1); |
137 | // v2.AddJet(j2); | |
138 | // | |
139 | // Float_t r2[3]={6.2,4.8,1.3}; | |
140 | // v2.SetPosition(r2,"car"); | |
141 | // | |
7849a8ab | 142 | // Specify the vertices v1 and v2 as secondary vertices of the primary |
143 | // | |
144 | // vp.SetVertexCopy(1); | |
145 | // vp.AddVertex(v1); | |
146 | // vp.AddVertex(v2); | |
147 | // | |
148 | // Enter the physics structures into the event | |
149 | // evt.SetVertexCopy(1); | |
150 | // evt.AddVertex(vp,0); | |
151 | // | |
152 | // The jets j1 and j2 are already available via sec. vertex v2, | |
153 | // but can be made available also from the event itself if desired. | |
154 | // AliJet* jx; | |
155 | // jx=v2.GetJet(1); | |
156 | // evt.AddJet(jx,0); | |
157 | // jx=v2.GetJet(2); | |
158 | // evt.AddJet(jx,0); | |
159 | // | |
d16062ac | 160 | // evt.Info("sph"); |
161 | // v1.ListAll(); | |
162 | // v2.List("cyl"); | |
163 | // | |
164 | // Float_t etot=evt.GetEnergy(); | |
165 | // Ali3Vector ptot=evt.Get3Momentum(); | |
166 | // Float_t loc[3]; | |
167 | // evt.GetPosition(loc,"sph"); | |
168 | // AliPosition r=v1.GetPosition(); | |
169 | // r.Info(); | |
170 | // Int_t nt=v2.GetNtracks(); | |
171 | // AliTrack* tv=v2.GetTrack(1); // Access track number 1 of Vertex v2 | |
172 | // | |
d16062ac | 173 | // evt.List(); |
174 | // | |
175 | // Int_t nv=evt.GetNvtx(); | |
7849a8ab | 176 | // AliVertex* vx=evt.GetVertex(1); // Access primary vertex |
d16062ac | 177 | // Float_t e=vx->GetEnergy(); |
178 | // | |
179 | // Float_t M=evt.GetInvmass(); | |
180 | // | |
181 | // Reconstruct the event from scratch | |
182 | // | |
183 | // evt.Reset(); | |
184 | // evt.SetNvmax(25); // Increase initial no. of sec. vertices | |
7849a8ab | 185 | // ... |
186 | // ... // code to create tracks etc... | |
187 | // ... | |
d16062ac | 188 | // |
189 | // Note : All quantities are in GeV, GeV/c or GeV/c**2 | |
190 | // | |
191 | //--- Author: Nick van Eijndhoven 27-may-2001 UU-SAP Utrecht | |
8e8e6c7f | 192 | //- Modified: NvE $Date: 2002/04/26 11:23:37 $ UU-SAP Utrecht |
d16062ac | 193 | /////////////////////////////////////////////////////////////////////////// |
194 | ||
195 | #include "AliEvent.h" | |
196 | ||
197 | ClassImp(AliEvent) // Class implementation to enable ROOT I/O | |
198 | ||
199 | AliEvent::AliEvent() | |
200 | { | |
201 | // Default constructor. | |
202 | // All variables initialised to default values. | |
203 | fDaytime.Set(); | |
204 | fRun=0; | |
205 | fEvent=0; | |
4575fcea | 206 | fAproj=0; |
207 | fZproj=0; | |
208 | fPnucProj=0; | |
209 | fAtarg=0; | |
210 | fZtarg=0; | |
211 | fPnucTarg=0; | |
7849a8ab | 212 | fNcals=0; |
213 | fCalorimeters=0; | |
214 | fCalCopy=0; | |
d16062ac | 215 | } |
216 | /////////////////////////////////////////////////////////////////////////// | |
81508922 | 217 | AliEvent::AliEvent(Int_t n): AliVertex(n) |
d16062ac | 218 | { |
219 | // Create an event to hold initially a maximum of n tracks | |
220 | // All variables initialised to default values | |
8e8e6c7f | 221 | cout << "AliEvent init with n = " << n << endl; |
d16062ac | 222 | fDaytime.Set(); |
223 | fRun=0; | |
224 | fEvent=0; | |
4575fcea | 225 | fAproj=0; |
226 | fZproj=0; | |
227 | fPnucProj=0; | |
228 | fAtarg=0; | |
229 | fZtarg=0; | |
230 | fPnucTarg=0; | |
7849a8ab | 231 | fNcals=0; |
232 | fCalorimeters=0; | |
233 | fCalCopy=0; | |
d16062ac | 234 | } |
235 | /////////////////////////////////////////////////////////////////////////// | |
236 | AliEvent::~AliEvent() | |
237 | { | |
238 | // Default destructor | |
7849a8ab | 239 | if (fCalorimeters) |
240 | { | |
7849a8ab | 241 | delete fCalorimeters; |
242 | fCalorimeters=0; | |
243 | } | |
d16062ac | 244 | } |
245 | /////////////////////////////////////////////////////////////////////////// | |
246 | void AliEvent::Reset() | |
247 | { | |
248 | // Reset all variables to default values | |
249 | // The max. number of tracks is set to the initial value again | |
250 | // The max. number of vertices is set to the default value again | |
8e8e6c7f | 251 | // Note : The CalCopy mode is maintained as it was set by the user before. |
d16062ac | 252 | fDaytime.Set(); |
253 | fRun=0; | |
254 | fEvent=0; | |
4575fcea | 255 | fAproj=0; |
256 | fZproj=0; | |
257 | fPnucProj=0; | |
258 | fAtarg=0; | |
259 | fZtarg=0; | |
260 | fPnucTarg=0; | |
d16062ac | 261 | |
7849a8ab | 262 | fNcals=0; |
263 | if (fCalorimeters) | |
264 | { | |
7849a8ab | 265 | delete fCalorimeters; |
266 | fCalorimeters=0; | |
267 | } | |
268 | ||
d16062ac | 269 | AliVertex::Reset(); |
270 | } | |
271 | /////////////////////////////////////////////////////////////////////////// | |
8e8e6c7f | 272 | void AliEvent::SetOwner(Bool_t own) |
273 | { | |
274 | // Set ownership of all added objects. | |
275 | // The default parameter is own=kTRUE. | |
276 | // | |
277 | // Invokation of this memberfunction also sets all the copy modes | |
278 | // (e.g. TrackCopy & co.) according to the value of own. | |
279 | // | |
280 | // This function (with own=kTRUE) is particularly useful when reading data | |
281 | // from a tree/file, since Reset() will then actually remove all the | |
282 | // added objects from memory irrespective of the copy mode settings | |
283 | // during the tree/file creation process. In this way it provides a nice way | |
284 | // of preventing possible memory leaks in the reading/analysis process. | |
285 | // | |
286 | // In addition this memberfunction can also be used as a shortcut to set all | |
287 | // copy modes in one go during a tree/file creation process. | |
288 | // However, in this case the user has to take care to only set/change the | |
289 | // ownership (and copy mode) for empty objects (e.g. newly created objects | |
290 | // or after invokation of the Reset() memberfunction) otherwise it will | |
291 | // very likely result in inconsistent destructor behaviour. | |
292 | ||
293 | Int_t mode=1; | |
294 | if (!own) mode=0; | |
295 | if (fCalorimeters) fCalorimeters->SetOwner(own); | |
296 | fCalCopy=mode; | |
297 | ||
298 | AliVertex::SetOwner(own); | |
299 | } | |
300 | /////////////////////////////////////////////////////////////////////////// | |
d16062ac | 301 | void AliEvent::SetDayTime(TDatime& stamp) |
302 | { | |
303 | // Set the date and time stamp for this event | |
304 | fDaytime=stamp; | |
305 | } | |
306 | /////////////////////////////////////////////////////////////////////////// | |
307 | void AliEvent::SetRunNumber(Int_t run) | |
308 | { | |
309 | // Set the run number for this event | |
310 | fRun=run; | |
311 | } | |
312 | /////////////////////////////////////////////////////////////////////////// | |
313 | void AliEvent::SetEventNumber(Int_t evt) | |
314 | { | |
315 | // Set the event number for this event | |
316 | fEvent=evt; | |
317 | } | |
318 | /////////////////////////////////////////////////////////////////////////// | |
319 | TDatime AliEvent::GetDayTime() | |
320 | { | |
321 | // Provide the date and time stamp for this event | |
322 | return fDaytime; | |
323 | } | |
324 | /////////////////////////////////////////////////////////////////////////// | |
325 | Int_t AliEvent::GetRunNumber() | |
326 | { | |
327 | // Provide the run number for this event | |
328 | return fRun; | |
329 | } | |
330 | /////////////////////////////////////////////////////////////////////////// | |
331 | Int_t AliEvent::GetEventNumber() | |
332 | { | |
333 | // Provide the event number for this event | |
334 | return fEvent; | |
335 | } | |
336 | /////////////////////////////////////////////////////////////////////////// | |
4575fcea | 337 | void AliEvent::SetProjectile(Int_t a,Int_t z,Double_t pnuc) |
338 | { | |
339 | // Set the projectile A, Z and momentum value per nucleon. | |
340 | fAproj=a; | |
341 | fZproj=z; | |
342 | fPnucProj=pnuc; | |
343 | } | |
344 | /////////////////////////////////////////////////////////////////////////// | |
345 | Int_t AliEvent::GetProjectileA() | |
346 | { | |
347 | // Provide the projectile A value. | |
348 | return fAproj; | |
349 | } | |
350 | /////////////////////////////////////////////////////////////////////////// | |
351 | Int_t AliEvent::GetProjectileZ() | |
352 | { | |
353 | // Provide the projectile Z value. | |
354 | return fZproj; | |
355 | } | |
356 | /////////////////////////////////////////////////////////////////////////// | |
357 | Double_t AliEvent::GetProjectilePnuc() | |
358 | { | |
359 | // Provide the projectile momentum value per nucleon. | |
360 | return fPnucProj; | |
361 | } | |
362 | /////////////////////////////////////////////////////////////////////////// | |
363 | void AliEvent::SetTarget(Int_t a,Int_t z,Double_t pnuc) | |
364 | { | |
365 | // Set the target A, Z and momentum value per nucleon. | |
366 | fAtarg=a; | |
367 | fZtarg=z; | |
368 | fPnucTarg=pnuc; | |
369 | } | |
370 | /////////////////////////////////////////////////////////////////////////// | |
371 | Int_t AliEvent::GetTargetA() | |
372 | { | |
373 | // Provide the target A value. | |
374 | return fAtarg; | |
375 | } | |
376 | /////////////////////////////////////////////////////////////////////////// | |
377 | Int_t AliEvent::GetTargetZ() | |
378 | { | |
379 | // Provide the target Z value. | |
380 | return fZtarg; | |
381 | } | |
382 | /////////////////////////////////////////////////////////////////////////// | |
383 | Double_t AliEvent::GetTargetPnuc() | |
384 | { | |
385 | // Provide the target momentum value per nucleon. | |
386 | return fPnucTarg; | |
387 | } | |
388 | /////////////////////////////////////////////////////////////////////////// | |
d16062ac | 389 | void AliEvent::HeaderInfo() |
390 | { | |
391 | // Provide event header information | |
392 | Int_t date=fDaytime.GetDate(); | |
393 | Int_t time=fDaytime.GetTime(); | |
394 | ||
395 | Int_t year=date/10000; | |
396 | Int_t month=(date%10000)/100; | |
397 | Int_t day=date%100; | |
398 | Int_t hh=time/10000; | |
399 | Int_t mm=(time%10000)/100; | |
400 | Int_t ss=time%100; | |
401 | ||
402 | char* c[12]={"jan","feb","mar","apr","may","jun", | |
403 | "jul","aug","sep","oct","nov","dec"}; | |
404 | ||
405 | cout << " *AliEvent::Info* Run : " << fRun << " Event : " << fEvent; | |
406 | cout.fill('0'); | |
407 | cout << " Date : " << setw(2) << day << "-" << c[month-1] << "-" << year | |
35044448 | 408 | << " Time : " << setw(2) << hh << ":" << setw(2) << mm << ":" << setw(2) << ss; |
d16062ac | 409 | cout.fill(' '); |
7849a8ab | 410 | cout << " Ncalorimeters : " << fNcals << endl; |
d16062ac | 411 | } |
412 | /////////////////////////////////////////////////////////////////////////// | |
413 | void AliEvent::Info(TString f) | |
414 | { | |
415 | // Provide event information within the coordinate frame f | |
416 | HeaderInfo(); | |
417 | AliVertex::Info(f); | |
418 | } | |
419 | /////////////////////////////////////////////////////////////////////////// | |
7849a8ab | 420 | Int_t AliEvent::GetNcalorimeters() |
421 | { | |
422 | // Provide the number of stored calorimeter systems | |
423 | return fNcals; | |
424 | } | |
425 | /////////////////////////////////////////////////////////////////////////// | |
426 | void AliEvent::AddCalorimeter(AliCalorimeter& c) | |
427 | { | |
428 | // Add a calorimeter system to the event | |
6516b62d | 429 | if (!fCalorimeters) |
430 | { | |
431 | fCalorimeters=new TObjArray(); | |
432 | if (fCalCopy) fCalorimeters->SetOwner(); | |
433 | } | |
7849a8ab | 434 | |
435 | // Add the calorimeter system to this event | |
436 | fNcals++; | |
437 | if (fCalCopy) | |
438 | { | |
6516b62d | 439 | fCalorimeters->AddLast((AliCalorimeter*)c.Clone()); |
7849a8ab | 440 | } |
441 | else | |
442 | { | |
443 | fCalorimeters->AddLast(&c); | |
444 | } | |
445 | } | |
446 | /////////////////////////////////////////////////////////////////////////// | |
447 | void AliEvent::SetCalCopy(Int_t j) | |
448 | { | |
449 | // (De)activate the creation of private copies of the added calorimeters. | |
450 | // j=0 ==> No private copies are made; pointers of original cals. are stored. | |
451 | // j=1 ==> Private copies of the cals. are made and these pointers are stored. | |
452 | // | |
453 | // Note : Once the storage contains pointer(s) to AliCalorimeter(s) one cannot | |
454 | // change the CalCopy mode anymore. | |
455 | // To change the CalCopy mode for an existing AliEvent containing | |
456 | // calorimeters one first has to invoke Reset(). | |
457 | if (!fCalorimeters) | |
458 | { | |
459 | if (j==0 || j==1) | |
460 | { | |
461 | fCalCopy=j; | |
462 | } | |
463 | else | |
464 | { | |
465 | cout << "*AliEvent::SetCalCopy* Invalid argument : " << j << endl; | |
466 | } | |
467 | } | |
468 | else | |
469 | { | |
470 | cout << "*AliEvent::SetCalCopy* Storage already contained calorimeters." | |
471 | << " ==> CalCopy mode not changed." << endl; | |
472 | } | |
473 | } | |
474 | /////////////////////////////////////////////////////////////////////////// | |
475 | Int_t AliEvent::GetCalCopy() | |
476 | { | |
477 | // Provide value of the CalCopy mode. | |
478 | // 0 ==> No private copies are made; pointers of original cals. are stored. | |
479 | // 1 ==> Private copies of the cals. are made and these pointers are stored. | |
480 | return fCalCopy; | |
481 | } | |
482 | /////////////////////////////////////////////////////////////////////////// | |
483 | AliCalorimeter* AliEvent::GetCalorimeter(Int_t i) | |
484 | { | |
485 | // Return the i-th calorimeter of this event | |
486 | if (!fCalorimeters) | |
487 | { | |
488 | cout << " *AliEvent::GetCalorimeter* No calorimeters present." << endl; | |
489 | return 0; | |
490 | } | |
491 | else | |
492 | { | |
493 | if (i<=0 || i>fNcals) | |
494 | { | |
495 | cout << " *AliEvent::GetCalorimeter* Invalid argument i : " << i | |
496 | << " Ncals = " << fNcals << endl; | |
497 | return 0; | |
498 | } | |
499 | else | |
500 | { | |
501 | return (AliCalorimeter*)fCalorimeters->At(i-1); | |
502 | } | |
503 | } | |
504 | } | |
505 | /////////////////////////////////////////////////////////////////////////// | |
506 | AliCalorimeter* AliEvent::GetCalorimeter(TString name) | |
507 | { | |
508 | // Return the calorimeter with name tag "name" | |
509 | if (!fCalorimeters) | |
510 | { | |
511 | cout << " *AliEvent::GetCalorimeter* No calorimeters present." << endl; | |
512 | return 0; | |
513 | } | |
514 | else | |
515 | { | |
516 | AliCalorimeter* cx; | |
517 | TString s; | |
518 | for (Int_t i=0; i<fNcals; i++) | |
519 | { | |
520 | cx=(AliCalorimeter*)fCalorimeters->At(i); | |
35044448 | 521 | if (cx) |
522 | { | |
523 | s=cx->GetName(); | |
524 | if (s == name) return cx; | |
525 | } | |
7849a8ab | 526 | } |
527 | ||
528 | return 0; // No matching name found | |
529 | } | |
530 | } | |
531 | /////////////////////////////////////////////////////////////////////////// | |
d16062ac | 532 |