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8020fb14 | 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 | $Log$ | |
b9d0a01d | 18 | Revision 1.4.4.1 2002/06/10 14:57:41 hristov |
19 | Merged with v3-08-02 | |
20 | ||
21 | Revision 1.5 2002/04/26 10:37:23 morsch | |
22 | Method RewindEvent() added. (N. Carrer) | |
23 | ||
d1d1da57 | 24 | Revision 1.4 2002/03/22 08:25:33 morsch |
25 | TreeE connected correctly. | |
26 | ||
314a87b5 | 27 | Revision 1.3 2001/12/12 11:21:37 morsch |
28 | Dummy copy constructor added. | |
29 | ||
43342f51 | 30 | Revision 1.2 2001/11/12 14:31:00 morsch |
31 | Memory leaks fixed. (M. Bondila) | |
32 | ||
ae872676 | 33 | Revision 1.1 2001/11/09 09:11:24 morsch |
34 | Realisation of AliGenReader that reads the kine tree (TreeK). | |
35 | ||
8020fb14 | 36 | */ |
37 | #include <TFile.h> | |
38 | #include <TTree.h> | |
39 | #include <TParticle.h> | |
40 | ||
41 | #include "AliGenReaderTreeK.h" | |
42 | #include "AliStack.h" | |
43 | #include "AliHeader.h" | |
44 | #include "AliRun.h" | |
45 | ||
46 | ClassImp(AliGenReaderTreeK); | |
47 | ||
48 | ||
49 | AliGenReaderTreeK::AliGenReaderTreeK():AliGenReader() | |
50 | { | |
51 | // Default constructor | |
52 | fFileName = NULL; | |
53 | fStack = 0; | |
54 | fHeader = 0; | |
55 | fNcurrent = 0; | |
56 | fNparticle = 0; | |
57 | fFile = 0; | |
58 | fBaseFile = 0; | |
ae872676 | 59 | fTreeE = 0; |
60 | } | |
61 | ||
43342f51 | 62 | AliGenReaderTreeK::AliGenReaderTreeK(const AliGenReaderTreeK &reader) |
63 | { | |
64 | ; | |
65 | } | |
66 | ||
67 | ||
ae872676 | 68 | AliGenReaderTreeK::~AliGenReaderTreeK() |
69 | { | |
70 | // Destructor | |
71 | delete fTreeE; | |
8020fb14 | 72 | } |
73 | ||
74 | void AliGenReaderTreeK::Init() | |
75 | { | |
76 | // Initialization | |
77 | // Connect base file and file to read from | |
78 | ||
79 | TTree *ali = gAlice->TreeE(); | |
80 | if (ali) { | |
81 | fBaseFile = ali->GetCurrentFile(); | |
82 | } else { | |
83 | printf("\n Warning: Basefile cannot be found !\n"); | |
84 | } | |
314a87b5 | 85 | if (!fFile) fFile = new TFile(fFileName); |
8020fb14 | 86 | } |
87 | ||
88 | Int_t AliGenReaderTreeK::NextEvent() | |
89 | { | |
314a87b5 | 90 | // Read the next event |
8020fb14 | 91 | // cd to file with old kine tree |
92 | if (!fBaseFile) Init(); | |
8020fb14 | 93 | fFile->cd(); |
314a87b5 | 94 | // Connect header tree |
95 | if (!fTreeE) fTreeE = (TTree*)gDirectory->Get("TE"); | |
8020fb14 | 96 | if (fHeader) delete fHeader; |
97 | fHeader = 0; | |
ae872676 | 98 | fTreeE->SetBranchAddress("Header", &fHeader); |
8020fb14 | 99 | // Get next event |
ae872676 | 100 | fTreeE->GetEntry(fNcurrent); |
314a87b5 | 101 | // Connect Stack |
102 | if (fStack) delete fStack; | |
8020fb14 | 103 | fStack = fHeader->Stack(); |
104 | fStack->GetEvent(fNcurrent); | |
8020fb14 | 105 | // cd back to base file |
106 | fBaseFile->cd(); | |
107 | // | |
108 | fNcurrent++; | |
109 | fNparticle = 0; | |
110 | Int_t ntrack = fStack->GetNtrack(); | |
111 | printf("\n Next event contains %d particles", ntrack); | |
314a87b5 | 112 | // |
8020fb14 | 113 | return ntrack; |
114 | } | |
115 | ||
116 | TParticle* AliGenReaderTreeK::NextParticle() | |
117 | { | |
118 | // Return next particle | |
119 | TParticle* part = fStack->Particle(fNparticle); | |
120 | fNparticle++; | |
121 | return part; | |
122 | } | |
123 | ||
d1d1da57 | 124 | void AliGenReaderTreeK::RewindEvent() |
125 | { | |
126 | // Go back to the first particle of the event | |
127 | fNparticle = 0; | |
128 | } | |
8020fb14 | 129 | |
130 | ||
ae872676 | 131 | AliGenReaderTreeK& AliGenReaderTreeK::operator=(const AliGenReaderTreeK& rhs) |
132 | { | |
133 | // Assignment operator | |
134 | return *this; | |
135 | } | |
8020fb14 | 136 | |
137 | ||
138 |