1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.15 2003/01/07 14:13:22 morsch
19 Communication between generators provising and requesting collision
22 Revision 1.14 2002/02/08 16:50:50 morsch
23 Add name and title in constructor.
25 Revision 1.13 2001/10/21 18:35:56 hristov
26 Several pointers were set to zero in the default constructors to avoid memory management problems
28 Revision 1.12 2001/06/18 13:07:30 morsch
29 Forward kinematic ranges to entries only if not set by user.
31 Revision 1.11 2001/01/30 09:23:12 hristov
32 Streamers removed (R.Brun)
34 Revision 1.10 2001/01/26 19:55:49 hristov
35 Major upgrade of AliRoot code
37 Revision 1.9 2000/12/21 16:24:06 morsch
38 Coding convention clean-up
40 Revision 1.8 2000/10/27 13:53:29 morsch
41 AddGenerator: check testbit before setting the pT and momentum range
44 Revision 1.7 2000/10/02 15:15:41 morsch
45 Use default streamer for AliGenCocktail
47 Revision 1.6 2000/09/07 17:04:31 morsch
48 In Streamer: TIter() after R__b << fEntries (Dmitri Yurevitch Peressounko)
50 Revision 1.5 2000/06/09 20:28:51 morsch
51 All coding rule violations except RS3 corrected (AM)
53 Revision 1.4 1999/09/29 09:24:12 fca
54 Introduction of the Copyright and cvs Log
58 // Container class for AliGenerator through recursion.
59 // Container is itself an AliGenerator.
60 // What is stored are not the pointers to the generators directly but to objects of type
61 // AliGenCocktail entry.
62 // The class provides also iterator functionality.
63 // Author: andreas.morsch@cern.ch
67 #include <TObjArray.h>
69 #include "AliGenCocktail.h"
70 #include "AliGenCocktailEntry.h"
73 ClassImp(AliGenCocktail)
75 AliGenCocktail::AliGenCocktail()
80 fTitle= "Particle Generator using cocktail of generators";
87 AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail)
92 AliGenCocktail::~AliGenCocktail()
99 AddGenerator(AliGenerator *Generator, char* Name, Float_t RateExp)
102 // Forward parameters to the new generator
103 if(TestBit(kPtRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange)))
104 Generator->SetPtRange(fPtMin,fPtMax);
105 if(TestBit(kMomentumRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange)))
106 Generator->SetMomentumRange(fPMin,fPMax);
108 if (!(Generator->TestBit(kYRange)))
109 Generator->SetYRange(fYMin,fYMax);
110 if (!(Generator->TestBit(kPhiRange)))
111 Generator->SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi());
112 if (!(Generator->TestBit(kThetaRange)))
113 Generator->SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi());
114 if (!(Generator->TestBit(kVertexRange)))
115 Generator->SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]);
117 SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]);
118 Generator->SetVertexSmear(fVertexSmear);
119 Generator->SetTrackingFlag(fTrackIt);
121 // Add generator to list
123 AliGenCocktailEntry *entry =
124 new AliGenCocktailEntry(Generator, Name, RateExp);
125 fEntries->Add(entry);
129 void AliGenCocktail::Init()
132 TIter next(fEntries);
133 AliGenCocktailEntry *entry;
135 // Loop over generators and initialize
136 while((entry = (AliGenCocktailEntry*)next())) {
137 entry->Generator()->Init();
141 void AliGenCocktail::Generate()
145 TIter next(fEntries);
146 AliGenCocktailEntry *entry = 0;
147 AliGenCocktailEntry *preventry = 0;
148 AliGenerator* gen = 0;
150 // AliGenCocktailEntry *e1;
151 // AliGenCocktailEntry *e2;
152 TObjArray *partArray = gAlice->Particles();
154 // Loop over generators and generate events
157 while((entry = (AliGenCocktailEntry*)next())) {
162 entry->SetFirst((partArray->GetEntriesFast())+1);
165 // Handle case in which current generator needs collision geometry from previous generator
167 gen = entry->Generator();
168 if (gen->NeedsCollisionGeometry())
170 if (preventry && preventry->Generator()->ProvidesCollisionGeometry())
172 gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry());
174 Fatal("Generate()", "No Collision Geometry Provided");
178 entry->Generator()->Generate();
179 entry->SetLast(partArray->GetEntriesFast());
184 while((entry = (AliGenCocktailEntry*)next())) {
187 for (entry=FirstGenerator();
189 entry=NextGenerator()
193 for (FirstGeneratorPair(e1,e2);
195 NextGeneratorPair(e1,e2)
197 printf("\n -----------------------------");
204 AliGenCocktailEntry * AliGenCocktail::FirstGenerator()
206 // Iterator over generators: Initialisation
207 flnk1 = fEntries->FirstLink();
209 return (AliGenCocktailEntry*) (flnk1->GetObject());
215 AliGenCocktailEntry* AliGenCocktail::NextGenerator()
217 // Iterator over generators: Increment
218 flnk1 = flnk1->Next();
220 return (AliGenCocktailEntry*) (flnk1->GetObject());
226 void AliGenCocktail::
227 FirstGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
229 // Iterator over generator pairs: Initialisation
230 flnk2 = flnk1 = fEntries->FirstLink();
232 e2 = e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
238 void AliGenCocktail::
239 NextGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
241 // Iterator over generators: Increment
242 flnk2 = flnk2->Next();
244 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
245 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
247 flnk2 = flnk1 = flnk1->Next();
249 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
250 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
258 AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs)
260 // Assignment operator