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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 | $Log$ | |
8b31bfac | 18 | Revision 1.9 2001/07/27 17:09:36 morsch |
19 | Use local SetTrack, KeepTrack and SetHighWaterMark methods | |
20 | to delegate either to local stack or to stack owned by AliRun. | |
21 | (Piotr Skowronski, A.M.) | |
22 | ||
a99cf51f | 23 | Revision 1.8 2000/12/06 15:11:38 morsch |
24 | Correct double declared data members. | |
25 | ||
38f1bd58 | 26 | Revision 1.7 2000/11/30 07:12:50 alibrary |
27 | Introducing new Rndm and QA classes | |
28 | ||
65fb704d | 29 | Revision 1.6 2000/10/02 21:28:06 fca |
30 | Removal of useless dependecies via forward declarations | |
31 | ||
94de3818 | 32 | Revision 1.5 2000/06/09 20:37:20 morsch |
33 | All coding rule violations except RS3 corrected | |
34 | ||
f87cfe57 | 35 | Revision 1.4 1999/11/03 17:43:20 fca |
36 | New version from G.Martinez & A.Morsch | |
37 | ||
886b6f73 | 38 | Revision 1.3 1999/09/29 09:24:14 fca |
39 | Introduction of the Copyright and cvs Log | |
40 | ||
4c039060 | 41 | */ |
42 | ||
b0418df4 | 43 | #include "AliGenScan.h" |
b0418df4 | 44 | #include "AliRun.h" |
f87cfe57 | 45 | |
b0418df4 | 46 | ClassImp(AliGenScan) |
47 | ||
48 | AliGenScan::AliGenScan() | |
49 | :AliGenerator(-1) | |
50 | { | |
f87cfe57 | 51 | // Constructor |
38f1bd58 | 52 | fXCmin=0; |
53 | fXCmax=0; | |
b0418df4 | 54 | fNx=1; |
38f1bd58 | 55 | fYCmin=0; |
56 | fYCmax=0; | |
b0418df4 | 57 | fNy=1; |
58 | fZmin=0; | |
59 | fZmax=0; | |
60 | fNz=1; | |
61 | // | |
62 | // Read all particles | |
63 | fNpart=-1; | |
64 | } | |
65 | ||
66 | AliGenScan::AliGenScan(Int_t npart) | |
67 | :AliGenerator(npart) | |
68 | { | |
f87cfe57 | 69 | // Constructor |
8b31bfac | 70 | fName = "Scan"; |
71 | fTitle = "Generator for particles on a grid"; | |
72 | ||
73 | ||
38f1bd58 | 74 | fXCmin=0; |
75 | fXCmax=0; | |
b0418df4 | 76 | fNx=1; |
38f1bd58 | 77 | fYCmin=0; |
78 | fYCmax=0; | |
b0418df4 | 79 | fNy=1; |
80 | fZmin=0; | |
81 | fZmax=0; | |
82 | fNz=1; | |
83 | } | |
84 | ||
85 | //____________________________________________________________ | |
86 | AliGenScan::~AliGenScan() | |
f87cfe57 | 87 | { |
88 | // Destructor | |
89 | } | |
b0418df4 | 90 | |
91 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
92 | Int_t ny, Float_t ymin, Float_t ymax, | |
93 | Int_t nz, Float_t zmin, Float_t zmax) | |
94 | { | |
f87cfe57 | 95 | // Define the grid |
38f1bd58 | 96 | fXCmin=xmin; |
97 | fXCmax=xmax; | |
b0418df4 | 98 | fNx=nx; |
38f1bd58 | 99 | fYCmin=ymin; |
100 | fYCmax=ymax; | |
b0418df4 | 101 | fNy=ny; |
102 | fZmin=zmin; | |
103 | fZmax=zmax; | |
104 | fNz=nz; | |
105 | } | |
106 | ||
107 | //____________________________________________________________ | |
108 | void AliGenScan::Generate() | |
109 | { | |
110 | // | |
111 | // Generate one trigger | |
112 | // | |
b0418df4 | 113 | |
114 | Float_t polar[3]= {0,0,0}; | |
115 | // | |
116 | Float_t origin[3]; | |
117 | Float_t p[3]; | |
118 | Int_t nt; | |
119 | Float_t pmom, theta, phi; | |
120 | // | |
121 | Float_t random[6]; | |
122 | Float_t dx,dy,dz; | |
123 | ||
124 | // | |
125 | if (fNy > 0) { | |
38f1bd58 | 126 | dx=(fXCmax-fXCmin)/fNx; |
b0418df4 | 127 | } else { |
128 | dx=1e10; | |
129 | } | |
130 | ||
131 | if (fNy > 0) { | |
38f1bd58 | 132 | dy=(fYCmax-fYCmin)/fNy; |
b0418df4 | 133 | } else { |
134 | dy=1e10; | |
135 | } | |
136 | ||
137 | if (fNz > 0) { | |
138 | dz=(fZmax-fZmin)/fNz; | |
139 | } else { | |
140 | dz=1e10; | |
141 | } | |
142 | for (Int_t ix=0; ix<fNx; ix++) { | |
143 | for (Int_t iy=0; iy<fNy; iy++) { | |
144 | for (Int_t iz=0; iz<fNz; iz++){ | |
65fb704d | 145 | Rndm(random,6); |
38f1bd58 | 146 | origin[0]=fXCmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; |
147 | origin[1]=fYCmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
b0418df4 | 148 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; |
149 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
150 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
151 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
152 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
153 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
154 | p[2] = pmom*TMath::Cos(theta); | |
a99cf51f | 155 | SetTrack(fTrackIt,-1,fIpart,p,origin,polar,0,kPPrimary,nt); |
b0418df4 | 156 | } |
157 | } | |
158 | } | |
159 | } | |
160 | ||
161 | ||
162 | ||
163 | ||
164 | ||
165 | ||
166 | ||
167 | ||
168 |