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 // Read the old ALICE event format based on CW-ntuples
20 // http://consult.cern.ch/alice/Internal_Notes/1995/32/abstract
21 // .cwn file have to be converted to .root using h2root
22 // Use SetFileName(file) to read from "file"
23 // Author: andreas.morsch@cern.ch
26 #include <TParticle.h>
27 #include <TDatabasePDG.h>
29 #include <TVirtualMC.h>
31 #include "AliGenReaderCwn.h"
33 ClassImp(AliGenReaderCwn)
35 AliGenReaderCwn::AliGenReaderCwn():
48 // Default constructor
51 AliGenReaderCwn::AliGenReaderCwn(const AliGenReaderCwn &reader):
70 AliGenReaderCwn::~AliGenReaderCwn()
75 void AliGenReaderCwn::Init()
78 // reset the existing file environment and open a new root file if
79 // the pointer to the Fluka tree is null
83 pFile = new TFile(fFileName);
85 printf("\n I have opened %s file \n", fFileName);
87 // get the tree address in the Fluka boundary source file
88 fTreeNtuple = (TTree*)gDirectory->Get("h888");
90 TTree *h2=fTreeNtuple;
91 //Set branch addresses
92 h2->SetBranchAddress("Nihead",&fNihead);
93 h2->SetBranchAddress("Ihead",fIhead);
94 h2->SetBranchAddress("Nrhead",&fNrhead);
95 h2->SetBranchAddress("Rhead",fRhead);
96 h2->SetBranchAddress("Idpart",&fIdpart);
97 h2->SetBranchAddress("Theta",&fTheta);
98 h2->SetBranchAddress("Phi",&fPhi);
99 h2->SetBranchAddress("P",&fP);
100 h2->SetBranchAddress("E",&fE);
103 Int_t AliGenReaderCwn::NextEvent()
105 // Read the next event
108 TFile* pFile = fTreeNtuple->GetCurrentFile();
111 Int_t nentries = (Int_t) fTreeNtuple->GetEntries();
112 if (fNcurrent < nentries) {
118 printf("\n This should never happen !\n");
121 printf("\n Next event contains %d tracks! \n", i6);
124 fNparticleMax = nTracks;
131 TParticle* AliGenReaderCwn::NextParticle()
137 // Read the next particle
138 if (fCode == kGEANT3) fIdpart=gMC->PDGFromId(fIdpart);
139 Double_t amass = TDatabasePDG::Instance()->GetParticle(fIdpart)->Mass();
141 Warning("Generate","Particle %d E = %f mass = %f %f %f \n",
142 fIdpart,fE,amass, fPhi, fTheta);
145 prwn=sqrt((fE+amass)*(fE-amass));
148 fTheta *= TMath::Pi()/180.;
149 fPhi = (fPhi-180)*TMath::Pi()/180.;
150 p[0] = prwn*TMath::Sin(fTheta)*TMath::Cos(fPhi);
151 p[1] = prwn*TMath::Sin(fTheta)*TMath::Sin(fPhi);
152 p[2] = prwn*TMath::Cos(fTheta);
154 TParticle* particle = new TParticle(fIdpart, 0, -1, -1, -1, -1, p[0], p[1], p[2], p[3], 0., 0., 0., 0.);
162 AliGenReaderCwn& AliGenReaderCwn::operator=(const AliGenReaderCwn& rhs)
164 // Assignment operator
169 void AliGenReaderCwn::Copy(TObject&) const
174 Fatal("Copy","Not implemented!\n");