]>
Commit | Line | Data |
---|---|---|
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 | ||
16 | /* | |
17 | $Log$ | |
18 | */ | |
19 | ||
20 | #include <TFile.h> | |
21 | #include <TTree.h> | |
22 | #include <TParticle.h> | |
23 | ||
24 | #include "AliGenReaderEcalHijing.h" | |
25 | #include "AliMC.h" | |
26 | ClassImp(AliGenReaderEcalHijing) | |
27 | ||
28 | ||
29 | AliGenReaderEcalHijing::AliGenReaderEcalHijing() | |
30 | { | |
31 | // Default constructor | |
32 | fNcurrent = 0; | |
33 | fTreeNtuple = 0; | |
34 | } | |
35 | ||
36 | void AliGenReaderEcalHijing::Init() | |
37 | { | |
38 | // | |
39 | // reset the existing file environment and open a new root file if | |
40 | // the pointer to the Fluka tree is null | |
41 | ||
42 | TFile *pFile=0; | |
43 | if (!pFile) { | |
44 | pFile = new TFile(fFileName); | |
45 | pFile->cd(); | |
46 | printf("\n I have opened %s file \n", fFileName); | |
47 | } | |
48 | // get the tree address in the Fluka boundary source file | |
49 | fTreeNtuple = (TTree*)gDirectory->Get("h2"); | |
50 | TTree *h2=fTreeNtuple; | |
51 | h2->SetMakeClass(1); | |
52 | //Set branch addresses | |
53 | h2->SetBranchAddress("njatt", &fNjatt); | |
54 | h2->SetBranchAddress("nahij", &fNahij); | |
55 | h2->SetBranchAddress("nphij", &fNphij); | |
56 | h2->SetBranchAddress("khij", fKhij) ; | |
57 | h2->SetBranchAddress("pxhij", fPxhij); | |
58 | h2->SetBranchAddress("pyhij", fPyhij); | |
59 | h2->SetBranchAddress("pzhij", fPzhij); | |
60 | h2->SetBranchAddress("ehij", fEhij) ; | |
61 | } | |
62 | ||
63 | Int_t AliGenReaderEcalHijing::NextEvent() | |
64 | { | |
65 | // Read the next event | |
66 | Int_t nTracks, nread; | |
67 | ||
68 | TFile* pFile = fTreeNtuple->GetCurrentFile(); | |
69 | pFile->cd(); | |
70 | ||
71 | Int_t nentries = (Int_t) fTreeNtuple->GetEntries(); | |
72 | if (fNcurrent < nentries) { | |
73 | Int_t nb = (Int_t)fTreeNtuple->GetEvent(fNcurrent); | |
74 | nread += nb; | |
75 | fNcurrent++; | |
76 | printf("\n Next event contains %d tracks! \n", fNphij); | |
77 | nTracks = fNphij; | |
78 | fNparticle = 0; | |
79 | return nTracks; | |
80 | } | |
81 | return 0; | |
82 | } | |
83 | ||
84 | TParticle* AliGenReaderEcalHijing::NextParticle() | |
85 | { | |
86 | Float_t p[4]; | |
87 | // Read the next particle | |
88 | Int_t ipart = fKhij[fNparticle]; | |
89 | p[0] = fPxhij[fNparticle]; | |
90 | p[1] = fPyhij[fNparticle]; | |
91 | p[2] = fPzhij[fNparticle]; | |
92 | p[3] = fEhij[fNparticle]; | |
93 | ||
94 | Double_t amass = TDatabasePDG::Instance()->GetParticle(ipart)->Mass(); | |
95 | ||
96 | if(p[3] <= amass) { | |
97 | Warning("Generate","Particle %d E = %f mass = %f \n", | |
98 | ipart, p[3], amass); | |
99 | } | |
100 | TParticle* particle = | |
101 | new TParticle(ipart, 0, -1, -1, -1, -1, p[0], p[1], p[2], p[3], | |
102 | 0., 0., 0., 0.); | |
103 | fNparticle++; | |
104 | return particle; | |
105 | } | |
106 | ||
107 | ||
108 | ||
109 | AliGenReaderEcalHijing& AliGenReaderEcalHijing::operator=(const AliGenReaderEcalHijing& rhs) | |
110 | { | |
111 | // Assignment operator | |
112 | return *this; | |
113 | } | |
114 | ||
115 | ||
116 | ||
117 | ||
118 | ||
119 |