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ed551210 | 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 | /* $Id$ */ | |
17 | // | |
18 | // Realisations of the AliGenReader interface to be used with AliGenExFile. | |
19 | // NextEvent() loops over events | |
20 | // and NextParticle() loops over particles. | |
21 | // This implementation reads various StarLight output formats | |
22 | // Author: andreas.morsch@cern.ch | |
23 | ||
24 | #include <TVirtualMC.h> | |
25 | #include <TDatabasePDG.h> | |
26 | #include <TParticle.h> | |
27 | ||
28 | #include "AliGenReaderSL.h" | |
29 | #include "AliRun.h" | |
062089eb | 30 | #include "AliStack.h" |
ed551210 | 31 | |
32 | ||
33 | ClassImp(AliGenReaderSL) | |
34 | ||
35 | ||
36 | AliGenReaderSL& AliGenReaderSL::operator=(const AliGenReaderSL& rhs) | |
37 | { | |
38 | // Assignment operator | |
39 | rhs.Copy(*this); | |
40 | return *this; | |
41 | } | |
42 | ||
43 | void AliGenReaderSL::Copy(TObject&) const | |
44 | { | |
45 | // | |
46 | // Copy | |
47 | // | |
48 | Fatal("Copy","Not implemented!\n"); | |
49 | } | |
50 | ||
51 | void AliGenReaderSL::Init() | |
52 | { | |
53 | // Initialisation | |
54 | if( !(fFile = fopen(fFileName,"r")) ) { | |
55 | printf("Couldn't open input file: %s \n", fFileName); | |
56 | } else { | |
57 | printf("File %s opened \n", fFileName); | |
58 | } | |
59 | ||
60 | ||
61 | } | |
62 | ||
63 | Int_t AliGenReaderSL::NextEvent() | |
64 | { | |
65 | // Read the next event | |
66 | ||
67 | if (fFormat == 0) { | |
68 | fNParticles = 4; | |
69 | return (fNParticles); | |
70 | } | |
71 | ||
72 | // Example | |
73 | // EVENT: 7 23 1 | |
74 | // GAMMAENERGIES: 27.6431 | |
75 | // VERTEX: 0 0 0 0 1 0 0 23 | |
76 | char linelabel[20]; | |
77 | int i1 = 0; | |
78 | int i2 = 0; | |
79 | int i3 = 0; | |
80 | ||
81 | ||
82 | double x1 = 0.0; | |
83 | double x2 = 0.0; | |
84 | double x3 = 0.0; | |
85 | double x4 = 0.0; | |
86 | ||
87 | int ntrk = 0; | |
88 | int nvtx = 0; | |
89 | // | |
90 | Float_t eGamma1, eGamma2; | |
91 | eGamma2 = 0.; | |
062089eb | 92 | Int_t nb; |
ed551210 | 93 | // Event line |
062089eb | 94 | nb = fscanf(fFile,"%6s %d %d %d ",linelabel, &i1, &ntrk, &i2); |
95 | if (nb == 0) return (0); | |
ed551210 | 96 | fNParticles = ntrk; |
37475f5f | 97 | //printf("Event line: %s i1 = %5d ntrk = %5d i2 = %5d \n", linelabel, i1, ntrk, i2); |
ed551210 | 98 | |
99 | // Gamma line | |
100 | if (fFormat == 1) { | |
062089eb | 101 | nb = fscanf(fFile, "%14s %f ",linelabel, &eGamma1); |
ed551210 | 102 | } else if (fFormat == 2) { |
062089eb | 103 | nb = fscanf(fFile, "%14s %f %f ",linelabel, &eGamma1, &eGamma2); |
ed551210 | 104 | } |
062089eb | 105 | if (nb == 0) return (0); |
37475f5f | 106 | // printf("Gamma line: %s Egamma1 = %13.3f Egamma2 = %13.3f \n", linelabel, eGamma1, eGamma2); |
ed551210 | 107 | |
108 | // Vertex line | |
062089eb | 109 | nb = fscanf(fFile, "%7s %lf %lf %lf %lf %d %d %d %d", |
ed551210 | 110 | linelabel, &x1, &x2, &x3, &x4, &i1, &i2, &i3, &nvtx); |
111 | // printf("Vertex line: %s (x = %13.3f, y = %13.3f, z = %13.3f, t = %13.3f) i1 = %5d i2 = %5d i3 = %5d nvtx = %5d \n", | |
112 | // linelabel, x1, x2, x3, x4, i1, i2, i3, nvtx); | |
062089eb | 113 | if (nb == 0) return (0); |
ed551210 | 114 | if(ntrk != nvtx) printf("ERROR: ntrk = %5d nvtx = %5d \n", ntrk, nvtx); |
115 | ||
116 | return (fNParticles); | |
117 | ||
118 | } | |
119 | ||
120 | TParticle* AliGenReaderSL::NextParticle() | |
121 | { | |
122 | // Read next particle | |
123 | ||
124 | Float_t px, py, pz; | |
125 | Int_t pdg; | |
126 | static TParticle particle; | |
062089eb | 127 | Int_t nb; |
ed551210 | 128 | if (fFormat == 0) { |
129 | Int_t ievent; | |
130 | Int_t ipart; | |
062089eb | 131 | nb = fscanf(fFile, "%d %d %d %f %f %f ", &ievent, &ipart, &pdg, &px, &py, &pz); |
ed551210 | 132 | // printf("%5d %5d %5d %13.3f %13.3f %13.3f \n", ievent, ipart, pdg, px, py, pz); |
133 | ||
134 | if (pdg == 8) pdg = 211; | |
135 | if (pdg == 9) pdg = -211; | |
136 | ||
137 | } else { | |
138 | char tracklabel[20]; | |
139 | int i1 = 0; | |
140 | int i2 = 0; | |
141 | int i3 = 0; | |
142 | int i4 = 0; | |
062089eb | 143 | nb = fscanf(fFile,"%6s %d %f %f %f %d %d %d %d", |
ed551210 | 144 | tracklabel, &i1, &px, &py, &pz, &i2, &i3, &i4, &pdg); |
145 | // printf("Particle %5d %13.3f %13.3f %13.3f \n", pdg, px, py, pz); | |
146 | } | |
062089eb | 147 | if (nb == 0) return (0x0); |
148 | ||
ed551210 | 149 | Double_t mass = TDatabasePDG::Instance()->GetParticle(pdg)->Mass(); |
150 | Float_t e = TMath::Sqrt(px * px + py * py + pz * pz + mass * mass); | |
151 | particle.SetMomentum(px, py, pz, e); | |
152 | particle.SetPdgCode(pdg); | |
062089eb | 153 | particle.SetFirstMother(-1); |
154 | particle.SetLastMother(-1); | |
155 | particle.SetBit(kTransportBit); | |
ed551210 | 156 | return &particle; |
157 | } | |
158 | ||
159 | void AliGenReaderSL::RewindEvent() | |
160 | { | |
161 | // fFile->Rewind(); | |
162 | } |