added the delete of EMCAL object posted in the folder when new file is opened
[u/mrichter/AliRoot.git] / RALICE / AliEvent.cxx
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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
197ClassImp(AliEvent) // Class implementation to enable ROOT I/O
198
199AliEvent::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 217AliEvent::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///////////////////////////////////////////////////////////////////////////
236AliEvent::~AliEvent()
237{
238// Default destructor
7849a8ab 239 if (fCalorimeters)
240 {
7849a8ab 241 delete fCalorimeters;
242 fCalorimeters=0;
243 }
d16062ac 244}
245///////////////////////////////////////////////////////////////////////////
246void 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 272void 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 301void AliEvent::SetDayTime(TDatime& stamp)
302{
303// Set the date and time stamp for this event
304 fDaytime=stamp;
305}
306///////////////////////////////////////////////////////////////////////////
307void AliEvent::SetRunNumber(Int_t run)
308{
309// Set the run number for this event
310 fRun=run;
311}
312///////////////////////////////////////////////////////////////////////////
313void AliEvent::SetEventNumber(Int_t evt)
314{
315// Set the event number for this event
316 fEvent=evt;
317}
318///////////////////////////////////////////////////////////////////////////
319TDatime AliEvent::GetDayTime()
320{
321// Provide the date and time stamp for this event
322 return fDaytime;
323}
324///////////////////////////////////////////////////////////////////////////
325Int_t AliEvent::GetRunNumber()
326{
327// Provide the run number for this event
328 return fRun;
329}
330///////////////////////////////////////////////////////////////////////////
331Int_t AliEvent::GetEventNumber()
332{
333// Provide the event number for this event
334 return fEvent;
335}
336///////////////////////////////////////////////////////////////////////////
4575fcea 337void 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///////////////////////////////////////////////////////////////////////////
345Int_t AliEvent::GetProjectileA()
346{
347// Provide the projectile A value.
348 return fAproj;
349}
350///////////////////////////////////////////////////////////////////////////
351Int_t AliEvent::GetProjectileZ()
352{
353// Provide the projectile Z value.
354 return fZproj;
355}
356///////////////////////////////////////////////////////////////////////////
357Double_t AliEvent::GetProjectilePnuc()
358{
359// Provide the projectile momentum value per nucleon.
360 return fPnucProj;
361}
362///////////////////////////////////////////////////////////////////////////
363void 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///////////////////////////////////////////////////////////////////////////
371Int_t AliEvent::GetTargetA()
372{
373// Provide the target A value.
374 return fAtarg;
375}
376///////////////////////////////////////////////////////////////////////////
377Int_t AliEvent::GetTargetZ()
378{
379// Provide the target Z value.
380 return fZtarg;
381}
382///////////////////////////////////////////////////////////////////////////
383Double_t AliEvent::GetTargetPnuc()
384{
385// Provide the target momentum value per nucleon.
386 return fPnucTarg;
387}
388///////////////////////////////////////////////////////////////////////////
d16062ac 389void 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///////////////////////////////////////////////////////////////////////////
413void AliEvent::Info(TString f)
414{
415// Provide event information within the coordinate frame f
416 HeaderInfo();
417 AliVertex::Info(f);
418}
419///////////////////////////////////////////////////////////////////////////
7849a8ab 420Int_t AliEvent::GetNcalorimeters()
421{
422// Provide the number of stored calorimeter systems
423 return fNcals;
424}
425///////////////////////////////////////////////////////////////////////////
426void 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///////////////////////////////////////////////////////////////////////////
447void 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///////////////////////////////////////////////////////////////////////////
475Int_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///////////////////////////////////////////////////////////////////////////
483AliCalorimeter* 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///////////////////////////////////////////////////////////////////////////
506AliCalorimeter* 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