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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 | Revision 1.8 2000/12/06 15:11:38 morsch | |
19 | Correct double declared data members. | |
20 | ||
21 | Revision 1.7 2000/11/30 07:12:50 alibrary | |
22 | Introducing new Rndm and QA classes | |
23 | ||
24 | Revision 1.6 2000/10/02 21:28:06 fca | |
25 | Removal of useless dependecies via forward declarations | |
26 | ||
27 | Revision 1.5 2000/06/09 20:37:20 morsch | |
28 | All coding rule violations except RS3 corrected | |
29 | ||
30 | Revision 1.4 1999/11/03 17:43:20 fca | |
31 | New version from G.Martinez & A.Morsch | |
32 | ||
33 | Revision 1.3 1999/09/29 09:24:14 fca | |
34 | Introduction of the Copyright and cvs Log | |
35 | ||
36 | */ | |
37 | ||
38 | #include "AliGenScan.h" | |
39 | #include "AliRun.h" | |
40 | ||
41 | ClassImp(AliGenScan) | |
42 | ||
43 | AliGenScan::AliGenScan() | |
44 | :AliGenerator(-1) | |
45 | { | |
46 | // Constructor | |
47 | fXCmin=0; | |
48 | fXCmax=0; | |
49 | fNx=1; | |
50 | fYCmin=0; | |
51 | fYCmax=0; | |
52 | fNy=1; | |
53 | fZmin=0; | |
54 | fZmax=0; | |
55 | fNz=1; | |
56 | // | |
57 | // Read all particles | |
58 | fNpart=-1; | |
59 | } | |
60 | ||
61 | AliGenScan::AliGenScan(Int_t npart) | |
62 | :AliGenerator(npart) | |
63 | { | |
64 | // Constructor | |
65 | fXCmin=0; | |
66 | fXCmax=0; | |
67 | fNx=1; | |
68 | fYCmin=0; | |
69 | fYCmax=0; | |
70 | fNy=1; | |
71 | fZmin=0; | |
72 | fZmax=0; | |
73 | fNz=1; | |
74 | } | |
75 | ||
76 | //____________________________________________________________ | |
77 | AliGenScan::~AliGenScan() | |
78 | { | |
79 | // Destructor | |
80 | } | |
81 | ||
82 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
83 | Int_t ny, Float_t ymin, Float_t ymax, | |
84 | Int_t nz, Float_t zmin, Float_t zmax) | |
85 | { | |
86 | // Define the grid | |
87 | fXCmin=xmin; | |
88 | fXCmax=xmax; | |
89 | fNx=nx; | |
90 | fYCmin=ymin; | |
91 | fYCmax=ymax; | |
92 | fNy=ny; | |
93 | fZmin=zmin; | |
94 | fZmax=zmax; | |
95 | fNz=nz; | |
96 | } | |
97 | ||
98 | //____________________________________________________________ | |
99 | void AliGenScan::Generate() | |
100 | { | |
101 | // | |
102 | // Generate one trigger | |
103 | // | |
104 | ||
105 | Float_t polar[3]= {0,0,0}; | |
106 | // | |
107 | Float_t origin[3]; | |
108 | Float_t p[3]; | |
109 | Int_t nt; | |
110 | Float_t pmom, theta, phi; | |
111 | // | |
112 | Float_t random[6]; | |
113 | Float_t dx,dy,dz; | |
114 | ||
115 | // | |
116 | if (fNy > 0) { | |
117 | dx=(fXCmax-fXCmin)/fNx; | |
118 | } else { | |
119 | dx=1e10; | |
120 | } | |
121 | ||
122 | if (fNy > 0) { | |
123 | dy=(fYCmax-fYCmin)/fNy; | |
124 | } else { | |
125 | dy=1e10; | |
126 | } | |
127 | ||
128 | if (fNz > 0) { | |
129 | dz=(fZmax-fZmin)/fNz; | |
130 | } else { | |
131 | dz=1e10; | |
132 | } | |
133 | for (Int_t ix=0; ix<fNx; ix++) { | |
134 | for (Int_t iy=0; iy<fNy; iy++) { | |
135 | for (Int_t iz=0; iz<fNz; iz++){ | |
136 | Rndm(random,6); | |
137 | origin[0]=fXCmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; | |
138 | origin[1]=fYCmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
139 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; | |
140 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
141 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
142 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
143 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
144 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
145 | p[2] = pmom*TMath::Cos(theta); | |
146 | SetTrack(fTrackIt,-1,fIpart,p,origin,polar,0,kPPrimary,nt); | |
147 | } | |
148 | } | |
149 | } | |
150 | } | |
151 | ||
152 | ||
153 | ||
154 | ||
155 | ||
156 | ||
157 | ||
158 | ||
159 |