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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 1.10.6.1 2002/07/30 11:30:48 alibrary | |
19 | Updating VirtualMC | |
20 | ||
21 | Revision 1.11 2002/07/30 09:09:59 morsch | |
22 | Correction in initialization. | |
23 | ||
24 | Revision 1.10 2002/02/08 16:50:50 morsch | |
25 | Add name and title in constructor. | |
26 | ||
27 | Revision 1.9 2001/07/27 17:09:36 morsch | |
28 | Use local SetTrack, KeepTrack and SetHighWaterMark methods | |
29 | to delegate either to local stack or to stack owned by AliRun. | |
30 | (Piotr Skowronski, A.M.) | |
31 | ||
32 | Revision 1.8 2000/12/06 15:11:38 morsch | |
33 | Correct double declared data members. | |
34 | ||
35 | Revision 1.7 2000/11/30 07:12:50 alibrary | |
36 | Introducing new Rndm and QA classes | |
37 | ||
38 | Revision 1.6 2000/10/02 21:28:06 fca | |
39 | Removal of useless dependecies via forward declarations | |
40 | ||
41 | Revision 1.5 2000/06/09 20:37:20 morsch | |
42 | All coding rule violations except RS3 corrected | |
43 | ||
44 | Revision 1.4 1999/11/03 17:43:20 fca | |
45 | New version from G.Martinez & A.Morsch | |
46 | ||
47 | Revision 1.3 1999/09/29 09:24:14 fca | |
48 | Introduction of the Copyright and cvs Log | |
49 | ||
50 | */ | |
51 | ||
52 | #include "AliGenScan.h" | |
53 | #include "AliRun.h" | |
54 | ||
55 | ClassImp(AliGenScan) | |
56 | ||
57 | AliGenScan::AliGenScan() | |
58 | :AliGenerator(-1) | |
59 | { | |
60 | // Constructor | |
61 | fXCmin=0; | |
62 | fXCmax=0; | |
63 | fNx=1; | |
64 | fYCmin=0; | |
65 | fYCmax=0; | |
66 | fNy=1; | |
67 | fZmin=0; | |
68 | fZmax=0; | |
69 | fNz=1; | |
70 | // | |
71 | // Read all particles | |
72 | fNpart=-1; | |
73 | } | |
74 | ||
75 | AliGenScan::AliGenScan(Int_t npart) | |
76 | :AliGenerator(npart) | |
77 | { | |
78 | // Constructor | |
79 | fName = "Scan"; | |
80 | fTitle = "Generator for particles on a grid"; | |
81 | ||
82 | ||
83 | fXCmin=0; | |
84 | fXCmax=0; | |
85 | fNx=1; | |
86 | fYCmin=0; | |
87 | fYCmax=0; | |
88 | fNy=1; | |
89 | fZmin=0; | |
90 | fZmax=0; | |
91 | fNz=1; | |
92 | } | |
93 | ||
94 | //____________________________________________________________ | |
95 | AliGenScan::~AliGenScan() | |
96 | { | |
97 | // Destructor | |
98 | } | |
99 | ||
100 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
101 | Int_t ny, Float_t ymin, Float_t ymax, | |
102 | Int_t nz, Float_t zmin, Float_t zmax) | |
103 | { | |
104 | // Define the grid | |
105 | fXCmin=xmin; | |
106 | fXCmax=xmax; | |
107 | fNx=nx; | |
108 | fYCmin=ymin; | |
109 | fYCmax=ymax; | |
110 | fNy=ny; | |
111 | fZmin=zmin; | |
112 | fZmax=zmax; | |
113 | fNz=nz; | |
114 | } | |
115 | ||
116 | //____________________________________________________________ | |
117 | void AliGenScan::Generate() | |
118 | { | |
119 | // | |
120 | // Generate one trigger | |
121 | // | |
122 | ||
123 | Float_t polar[3]= {0,0,0}; | |
124 | // | |
125 | Float_t origin[3]; | |
126 | Float_t p[3]; | |
127 | Int_t nt; | |
128 | Float_t pmom, theta, phi; | |
129 | // | |
130 | Float_t random[6]; | |
131 | Float_t dx,dy,dz; | |
132 | ||
133 | // | |
134 | if (fNx > 0) { | |
135 | dx=(fXCmax-fXCmin)/fNx; | |
136 | } else { | |
137 | dx=1e10; | |
138 | } | |
139 | ||
140 | if (fNy > 0) { | |
141 | dy=(fYCmax-fYCmin)/fNy; | |
142 | } else { | |
143 | dy=1e10; | |
144 | } | |
145 | ||
146 | if (fNz > 0) { | |
147 | dz=(fZmax-fZmin)/fNz; | |
148 | } else { | |
149 | dz=1e10; | |
150 | } | |
151 | for (Int_t ix=0; ix<fNx; ix++) { | |
152 | for (Int_t iy=0; iy<fNy; iy++) { | |
153 | for (Int_t iz=0; iz<fNz; iz++){ | |
154 | Rndm(random,6); | |
155 | origin[0]=fXCmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; | |
156 | origin[1]=fYCmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
157 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; | |
158 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
159 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
160 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
161 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
162 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
163 | p[2] = pmom*TMath::Cos(theta); | |
164 | SetTrack(fTrackIt,-1,fIpart,p,origin,polar,0,kPPrimary,nt); | |
165 | } | |
166 | } | |
167 | } | |
168 | } | |
169 | ||
170 | ||
171 | ||
172 | ||
173 | ||
174 | ||
175 | ||
176 | ||
177 |