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>
28 #include <TVirtualMC.h>
30 #include "AliGenReaderCwn.h"
32 ClassImp(AliGenReaderCwn)
34 AliGenReaderCwn::AliGenReaderCwn():
47 // Default constructor
50 AliGenReaderCwn::AliGenReaderCwn(const AliGenReaderCwn &reader):
69 AliGenReaderCwn::~AliGenReaderCwn()
74 void AliGenReaderCwn::Init()
77 // reset the existing file environment and open a new root file if
78 // the pointer to the Fluka tree is null
82 pFile = new TFile(fFileName);
84 printf("\n I have opened %s file \n", fFileName);
86 // get the tree address in the Fluka boundary source file
87 fTreeNtuple = (TTree*)gDirectory->Get("h888");
89 TTree *h2=fTreeNtuple;
90 //Set branch addresses
91 h2->SetBranchAddress("Nihead",&fNihead);
92 h2->SetBranchAddress("Ihead",fIhead);
93 h2->SetBranchAddress("Nrhead",&fNrhead);
94 h2->SetBranchAddress("Rhead",fRhead);
95 h2->SetBranchAddress("Idpart",&fIdpart);
96 h2->SetBranchAddress("Theta",&fTheta);
97 h2->SetBranchAddress("Phi",&fPhi);
98 h2->SetBranchAddress("P",&fP);
99 h2->SetBranchAddress("E",&fE);
102 Int_t AliGenReaderCwn::NextEvent()
104 // Read the next event
107 TFile* pFile = fTreeNtuple->GetCurrentFile();
110 Int_t nentries = (Int_t) fTreeNtuple->GetEntries();
111 if (fNcurrent < nentries) {
117 printf("\n This should never happen !\n");
120 printf("\n Next event contains %d tracks! \n", i6);
123 fNparticleMax = nTracks;
130 TParticle* AliGenReaderCwn::NextParticle()
136 // Read the next particle
137 if (fCode == kGEANT3) fIdpart=gMC->PDGFromId(fIdpart);
138 Double_t amass = TDatabasePDG::Instance()->GetParticle(fIdpart)->Mass();
140 Warning("Generate","Particle %d E = %f mass = %f %f %f \n",
141 fIdpart,fE,amass, fPhi, fTheta);
144 prwn=sqrt((fE+amass)*(fE-amass));
147 fTheta *= TMath::Pi()/180.;
148 fPhi = (fPhi-180)*TMath::Pi()/180.;
149 p[0] = prwn*TMath::Sin(fTheta)*TMath::Cos(fPhi);
150 p[1] = prwn*TMath::Sin(fTheta)*TMath::Sin(fPhi);
151 p[2] = prwn*TMath::Cos(fTheta);
153 TParticle* particle = new TParticle(fIdpart, 0, -1, -1, -1, -1, p[0], p[1], p[2], p[3], 0., 0., 0., 0.);
161 AliGenReaderCwn& AliGenReaderCwn::operator=(const AliGenReaderCwn& rhs)
163 // Assignment operator
168 void AliGenReaderCwn::Copy(TObject&) const
173 Fatal("Copy","Not implemented!\n");