Opening galice.root using rfio
[u/mrichter/AliRoot.git] / EVGEN / AliGenCocktail.cxx
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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
16/*
17$Log$
a8a6107b 18Revision 1.10 2001/01/26 19:55:49 hristov
19Major upgrade of AliRoot code
20
2ab0c725 21Revision 1.9 2000/12/21 16:24:06 morsch
22Coding convention clean-up
23
675e9664 24Revision 1.8 2000/10/27 13:53:29 morsch
25AddGenerator: check testbit before setting the pT and momentum range
26(D.Y. Peressounko)
27
699cb625 28Revision 1.7 2000/10/02 15:15:41 morsch
29Use default streamer for AliGenCocktail
30
a436e7fc 31Revision 1.6 2000/09/07 17:04:31 morsch
32In Streamer: TIter() after R__b << fEntries (Dmitri Yurevitch Peressounko)
33
e6e2a20e 34Revision 1.5 2000/06/09 20:28:51 morsch
35All coding rule violations except RS3 corrected (AM)
36
374924b5 37Revision 1.4 1999/09/29 09:24:12 fca
38Introduction of the Copyright and cvs Log
39
4c039060 40*/
41
675e9664 42// Container class for AliGenerator through recursion.
43// Container is itself an AliGenerator.
44// What is stored are not the pointers to the generators directly but to objects of type
45// AliGenCocktail entry.
46// The class provides also iterator functionality.
47// Author: andreas.morsch@cern.ch
48//
49
fe4da5cc 50#include "AliGenCocktail.h"
374924b5 51#include "AliGenCocktailEntry.h"
fe4da5cc 52#include "AliRun.h"
675e9664 53#include <TList.h>
fe4da5cc 54
55ClassImp(AliGenCocktail)
56
57AliGenCocktail::AliGenCocktail()
58 :AliGenerator()
59{
374924b5 60// Constructor
fe4da5cc 61 fEntries = new TList;
62 fNGenerators=0;
63}
64
374924b5 65AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail)
66{
67// copy constructor
68}
fe4da5cc 69
70AliGenCocktail::~AliGenCocktail()
71{
374924b5 72// Destructor
fe4da5cc 73 delete fEntries;
74}
75
76void AliGenCocktail::
a436e7fc 77AddGenerator(AliGenerator *Generator, char* Name, Float_t RateExp)
fe4da5cc 78{
79//
80// Forward parameters to the new generator
699cb625 81 if(TestBit(kPtRange))
fe4da5cc 82 Generator->SetPtRange(fPtMin,fPtMax);
699cb625 83 if(TestBit(kMomentumRange))
fe4da5cc 84 Generator->SetMomentumRange(fPMin,fPMax);
699cb625 85
fe4da5cc 86 Generator->SetYRange(fYMin,fYMax);
87 Generator->
88 SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi());
89 Generator->
90 SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi());
91 Generator->
92 SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]);
93 Generator->
94 SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]);
7a50a130 95 Generator->SetVertexSmear(fVertexSmear);
96 Generator->SetTrackingFlag(fTrackIt);
fe4da5cc 97//
98// Add generator to list
a436e7fc 99
374924b5 100 AliGenCocktailEntry *entry =
fe4da5cc 101 new AliGenCocktailEntry(Generator, Name, RateExp);
374924b5 102 fEntries->Add(entry);
fe4da5cc 103 fNGenerators++;
104 }
105
106 void AliGenCocktail::Init()
374924b5 107{
108// Initialisation
109 TIter next(fEntries);
110 AliGenCocktailEntry *entry;
111 //
112 // Loop over generators and initialize
113 while((entry = (AliGenCocktailEntry*)next())) {
114 entry->Generator()->Init();
115 }
116}
fe4da5cc 117
118 void AliGenCocktail::Generate()
374924b5 119{
120//
121// Generate event
122 TIter next(fEntries);
123 AliGenCocktailEntry *entry;
124 AliGenCocktailEntry *e1;
125 AliGenCocktailEntry *e2;
2ab0c725 126 TObjArray *partArray = gAlice->Particles();
374924b5 127 //
128 // Loop over generators and generate events
129 Int_t igen=0;
130 while((entry = (AliGenCocktailEntry*)next())) {
131 igen++;
132 if (igen ==1) {
133 entry->SetFirst(0);
134 } else {
135 entry->SetFirst((partArray->GetEntriesFast())+1);
136 }
137 entry->Generator()->Generate();
138 entry->SetLast(partArray->GetEntriesFast());
139 }
140 next.Reset();
141 while((entry = (AliGenCocktailEntry*)next())) {
142 entry->PrintInfo();
143 }
144 for (entry=FirstGenerator();
145 entry;
146 entry=NextGenerator()
147 ) {
148 entry->PrintInfo();
149 }
150 for (FirstGeneratorPair(e1,e2);
151 (e1&&e2);
152 NextGeneratorPair(e1,e2)
153 ){
154 printf("\n -----------------------------");
155 e1->PrintInfo();
156 e2->PrintInfo();
157 }
158}
fe4da5cc 159
160AliGenCocktailEntry * AliGenCocktail::FirstGenerator()
161{
374924b5 162// Iterator over generators: Initialisation
fe4da5cc 163 flnk1 = fEntries->FirstLink();
164 if (flnk1) {
165 return (AliGenCocktailEntry*) (flnk1->GetObject());
166 } else {
167 return 0;
168 }
169}
170
171AliGenCocktailEntry* AliGenCocktail::NextGenerator()
172{
374924b5 173// Iterator over generators: Increment
fe4da5cc 174 flnk1 = flnk1->Next();
175 if (flnk1) {
176 return (AliGenCocktailEntry*) (flnk1->GetObject());
177 } else {
178 return 0;
179 }
180}
181
182void AliGenCocktail::
183FirstGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
184{
374924b5 185// Iterator over generator pairs: Initialisation
fe4da5cc 186 flnk2 = flnk1 = fEntries->FirstLink();
187 if (flnk1) {
188 e2 = e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
189 } else {
190 e2= e1 = 0;
191 }
192}
193
194void AliGenCocktail::
195NextGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
196{
374924b5 197// Iterator over generators: Increment
fe4da5cc 198 flnk2 = flnk2->Next();
199 if (flnk2) {
200 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
201 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
202 } else {
203 flnk2 = flnk1 = flnk1->Next();
204 if (flnk1) {
205 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
206 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
207 } else {
208 e1=0;
209 e2=0;
210 }
211 }
212}
213
374924b5 214AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs)
215{
216// Assignment operator
217 return *this;
fe4da5cc 218}
219
220