some warnings removed
[u/mrichter/AliRoot.git] / EVGEN / AliGenReaderEcalJets.cxx
CommitLineData
b152a071 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
88cb7938 16/* $Id$ */
b152a071 17
18#include <TFile.h>
b152a071 19#include <TParticle.h>
88cb7938 20#include <TTree.h>
21#include <TVirtualMC.h>
b152a071 22
23#include "AliGenReaderEcalJets.h"
88cb7938 24
b152a071 25ClassImp(AliGenReaderEcalJets)
26
27
28AliGenReaderEcalJets::AliGenReaderEcalJets()
29{
30// Default constructor
31 fNcurrent = 0;
32 fTreeNtuple = 0;
33}
34
35void AliGenReaderEcalJets::Init()
36{
37//
38// reset the existing file environment and open a new root file if
39// the pointer to the Fluka tree is null
40
41 TFile *pFile=0;
42 if (!pFile) {
43 pFile = new TFile(fFileName);
44 pFile->cd();
45 printf("\n I have opened %s file \n", fFileName);
46 }
47// get the tree address in the Fluka boundary source file
48 fTreeNtuple = (TTree*)gDirectory->Get("h1");
49 TTree *h1=fTreeNtuple;
50 h1->SetMakeClass(1);
51//Set branch addresses
52 h1->SetBranchAddress("nev", &fNev);
53 h1->SetBranchAddress("x", fX);
54 h1->SetBranchAddress("xtyp", fXtyp);
55 h1->SetBranchAddress("npart", &fNpart);
56 h1->SetBranchAddress("xpt", fXpt);
57 h1->SetBranchAddress("xeta", fXeta);
58 h1->SetBranchAddress("xphi", fXphi);
59 h1->SetBranchAddress("xid", fXid);
60 h1->SetBranchAddress("njet", &fNjet);
61 h1->SetBranchAddress("jet", fJet);
62 h1->SetBranchAddress("jeta", fJeta);
63 h1->SetBranchAddress("jphi", fJphi);
64 h1->SetBranchAddress("nsjet", &fNsjet);
65 h1->SetBranchAddress("jset", fJset);
66 h1->SetBranchAddress("jseta", fJseta);
67 h1->SetBranchAddress("jsphi", fJsphi);
68 h1->SetBranchAddress("npjet", &fNpjet);
69 h1->SetBranchAddress("jpet", fJpet);
70 h1->SetBranchAddress("jpeta", fJpeta);
71 h1->SetBranchAddress("jpphi", fJpphi);
72}
73
74Int_t AliGenReaderEcalJets::NextEvent()
75{
76// Read the next event
58323221 77 Int_t nTracks=0, nread=0;
b152a071 78
79 TFile* pFile = fTreeNtuple->GetCurrentFile();
80 pFile->cd();
81
82 Int_t nentries = (Int_t) fTreeNtuple->GetEntries();
83 if (fNcurrent < nentries) {
84 Int_t nb = (Int_t)fTreeNtuple->GetEvent(fNcurrent);
85 nread += nb;
86 fNcurrent++;
87 printf("\n Next event contains %d tracks! \n", fNpjet);
88 nTracks = fNpjet;
89 fNparticle = 0;
90 return nTracks;
91 }
92 return 0;
93}
94
95TParticle* AliGenReaderEcalJets::NextParticle()
96{
97 Float_t p[4];
98// Read the next particle
99 Int_t ipart = fXid[fNparticle];
100 Float_t pt = fXpt[fNparticle];
101 Float_t eta = fXeta[fNparticle];
102 Float_t phi = fXphi[fNparticle];
103 Float_t theta = 2.*TMath::ATan(TMath::Exp(-eta));
104 Double_t amass = TDatabasePDG::Instance()->GetParticle(ipart)->Mass();
105
106 p[0] = pt*TMath::Sin(phi);
107 p[1] = pt*TMath::Cos(phi);
108 p[2] = pt/TMath::Cos(theta);
109 p[3] = TMath::Sqrt(pt*pt+p[2]*p[2]+amass*amass);
110
111
112 TParticle* particle =
113 new TParticle(ipart, 0, -1, -1, -1, -1, p[0], p[1], p[2], p[3],
114 0., 0., 0., 0.);
115 fNparticle++;
116 return particle;
117}
118
119
120
121AliGenReaderEcalJets& AliGenReaderEcalJets::operator=(const AliGenReaderEcalJets& rhs)
122{
123// Assignment operator
124 return *this;
125}
126
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