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