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 **************************************************************************/
19 // Wrapper for MEVSIM generator.
20 // It is using TMevSim to comunicate with fortarn code
23 // Sylwester Radomski <radomski@if.pw.edu.pl>
26 #include <Riostream.h>
28 //#include "TSystem.h"
29 //#include "TUnixSystem.h"
30 #include "TParticle.h"
33 #include "AliGenMevSim.h"
36 static TRandom * sRandom;
38 ClassImp(AliGenMevSim)
40 //____________________________________________________________________________
41 AliGenMevSim::AliGenMevSim() : AliGenerator(-1)
47 fConfig = new AliMevSimConfig();
48 fMevSim = new TMevSim();
52 //____________________________________________________________________________
53 AliGenMevSim::AliGenMevSim(AliMevSimConfig *config): AliGenerator(-1) {
56 fMevSim = new TMevSim();
60 //____________________________________________________________________________
61 AliGenMevSim::~AliGenMevSim()
64 // Standard destructor
66 if (fMevSim) delete fMevSim;
68 //____________________________________________________________________________
69 void AliGenMevSim::SetConfig(AliMevSimConfig *config) {
73 //____________________________________________________________________________
74 void AliGenMevSim::AddParticleType(AliMevSimParticle *type) {
76 fMevSim->AddPartTypeParams((TMevSimPartTypeParams*)type);
78 //____________________________________________________________________________
79 void AliGenMevSim::Init()
82 // Generator initialisation method
85 // fill data from AliMevSimConfig;
87 TMevSim *mevsim = fMevSim;
89 // geometry & momentum cut
91 if (TestBit(kPtRange)) mevsim->SetPtCutRange(fPtMin, fPtMax);
93 if (TestBit(kPhiRange)) // from radians to 0 - 360 deg
94 mevsim->SetPhiCutRange( fPhiMin * 180 / TMath::Pi() , fPhiMax * 180 / TMath::Pi() );
96 if (TestBit(kThetaRange)) // from theta to eta
98 mevsim->SetEtaCutRange( -TMath::Log( TMath::Tan(fThetaMax/2)) , -TMath::Log( TMath::Tan(fThetaMin/2)) );
101 // mevsim specyfic parameters
103 mevsim->SetModelType(fConfig->GetModelType());
104 Int_t ctrl; Float_t psiRMean = 0; Float_t psiRStDev = 0;
105 fConfig->GetRectPlane(ctrl,psiRMean,psiRStDev);
106 mevsim->SetReacPlaneCntrl(ctrl);
107 mevsim->SetPsiRParams(psiRMean, psiRStDev);
108 Float_t mean; Float_t stDev;
109 fConfig->GetMultFac(mean,stDev);
110 mevsim->SetMultFacParams(mean,stDev);
111 // mevsim initialisation
113 mevsim->Initialize();
116 //____________________________________________________________________________
117 void AliGenMevSim::Generate()
120 // Read the formatted output file and load the particles
121 // Temporary solution
127 Float_t orgin[3] = {0,0,0};
128 Float_t polar[3] = {0,0,0};
129 Float_t p[3] = {1,1,1};
132 const Int_t parent = -1;
139 orgin[0] = fVertex[0];
140 orgin[1] = fVertex[1];
141 orgin[2] = fVertex[2];
145 cout << orgin[i] << "\t";
148 Int_t nParticles = 0;
150 TClonesArray *particles = new TClonesArray("TParticle");
153 fMevSim->GenerateEvent();
154 fNpart= fMevSim->ImportParticles(particles,"");
156 cout << "Found " << fNpart << " particles ..." << endl;
159 for (i=0; i<nParticles; i++) {
161 particle = (TParticle*) (*particles)[i];
163 pdg = (PDG_t) particle->GetPdgCode();
164 p[0] = particle->Px();
165 p[1] = particle->Py();
166 p[2] = particle->Pz();
168 PushTrack(fTrackIt, parent, pdg, p, orgin, polar, time, kPPrimary, id);
173 if (particles) delete particles;
175 //____________________________________________________________________________
176 //____________________________________________________________________________
181 # define type_of_call
184 # define type_of_call _stdcall
187 extern "C" Float_t type_of_call ran(Int_t &)
189 return sRandom->Rndm();
192 //____________________________________________________________________________