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4c039060 | 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 | $Log$ | |
f87cfe57 | 18 | Revision 1.4 1999/11/03 17:43:20 fca |
19 | New version from G.Martinez & A.Morsch | |
20 | ||
886b6f73 | 21 | Revision 1.3 1999/09/29 09:24:14 fca |
22 | Introduction of the Copyright and cvs Log | |
23 | ||
4c039060 | 24 | */ |
25 | ||
b0418df4 | 26 | #include "AliGenScan.h" |
b0418df4 | 27 | #include "AliRun.h" |
f87cfe57 | 28 | |
b0418df4 | 29 | ClassImp(AliGenScan) |
30 | ||
31 | AliGenScan::AliGenScan() | |
32 | :AliGenerator(-1) | |
33 | { | |
f87cfe57 | 34 | // Constructor |
b0418df4 | 35 | fXmin=0; |
36 | fXmax=0; | |
37 | fNx=1; | |
38 | fYmin=0; | |
39 | fYmax=0; | |
40 | fNy=1; | |
41 | fZmin=0; | |
42 | fZmax=0; | |
43 | fNz=1; | |
44 | // | |
45 | // Read all particles | |
46 | fNpart=-1; | |
47 | } | |
48 | ||
49 | AliGenScan::AliGenScan(Int_t npart) | |
50 | :AliGenerator(npart) | |
51 | { | |
f87cfe57 | 52 | // Constructor |
b0418df4 | 53 | fXmin=0; |
54 | fXmax=0; | |
55 | fNx=1; | |
56 | fYmin=0; | |
57 | fYmax=0; | |
58 | fNy=1; | |
59 | fZmin=0; | |
60 | fZmax=0; | |
61 | fNz=1; | |
62 | } | |
63 | ||
64 | //____________________________________________________________ | |
65 | AliGenScan::~AliGenScan() | |
f87cfe57 | 66 | { |
67 | // Destructor | |
68 | } | |
b0418df4 | 69 | |
70 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
71 | Int_t ny, Float_t ymin, Float_t ymax, | |
72 | Int_t nz, Float_t zmin, Float_t zmax) | |
73 | { | |
f87cfe57 | 74 | // Define the grid |
b0418df4 | 75 | fXmin=xmin; |
76 | fXmax=xmax; | |
77 | fNx=nx; | |
78 | fYmin=ymin; | |
79 | fYmax=ymax; | |
80 | fNy=ny; | |
81 | fZmin=zmin; | |
82 | fZmax=zmax; | |
83 | fNz=nz; | |
84 | } | |
85 | ||
86 | //____________________________________________________________ | |
87 | void AliGenScan::Generate() | |
88 | { | |
89 | // | |
90 | // Generate one trigger | |
91 | // | |
b0418df4 | 92 | |
93 | Float_t polar[3]= {0,0,0}; | |
94 | // | |
95 | Float_t origin[3]; | |
96 | Float_t p[3]; | |
97 | Int_t nt; | |
98 | Float_t pmom, theta, phi; | |
99 | // | |
100 | Float_t random[6]; | |
101 | Float_t dx,dy,dz; | |
102 | ||
103 | // | |
104 | if (fNy > 0) { | |
105 | dx=(fXmax-fXmin)/fNx; | |
106 | } else { | |
107 | dx=1e10; | |
108 | } | |
109 | ||
110 | if (fNy > 0) { | |
111 | dy=(fYmax-fYmin)/fNy; | |
112 | } else { | |
113 | dy=1e10; | |
114 | } | |
115 | ||
116 | if (fNz > 0) { | |
117 | dz=(fZmax-fZmin)/fNz; | |
118 | } else { | |
119 | dz=1e10; | |
120 | } | |
121 | for (Int_t ix=0; ix<fNx; ix++) { | |
122 | for (Int_t iy=0; iy<fNy; iy++) { | |
123 | for (Int_t iz=0; iz<fNz; iz++){ | |
cfce8870 | 124 | gMC->Rndm(random,6); |
b0418df4 | 125 | origin[0]=fXmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; |
126 | origin[1]=fYmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
127 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; | |
128 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
129 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
130 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
131 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
132 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
133 | p[2] = pmom*TMath::Cos(theta); | |
886b6f73 | 134 | gAlice->SetTrack(fTrackIt,-1,fIpart,p,origin,polar,0,"Primary",nt); |
b0418df4 | 135 | } |
136 | } | |
137 | } | |
138 | } | |
139 | ||
140 | ||
141 | ||
142 | ||
143 | ||
144 | ||
145 | ||
146 | ||
147 |