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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 | ||
88cb7938 | 16 | /* $Id$ */ |
4c039060 | 17 | |
b0418df4 | 18 | #include "AliGenScan.h" |
b0418df4 | 19 | #include "AliRun.h" |
f87cfe57 | 20 | |
b0418df4 | 21 | ClassImp(AliGenScan) |
22 | ||
23 | AliGenScan::AliGenScan() | |
24 | :AliGenerator(-1) | |
25 | { | |
f87cfe57 | 26 | // Constructor |
38f1bd58 | 27 | fXCmin=0; |
28 | fXCmax=0; | |
b0418df4 | 29 | fNx=1; |
38f1bd58 | 30 | fYCmin=0; |
31 | fYCmax=0; | |
b0418df4 | 32 | fNy=1; |
33 | fZmin=0; | |
34 | fZmax=0; | |
35 | fNz=1; | |
36 | // | |
37 | // Read all particles | |
38 | fNpart=-1; | |
39 | } | |
40 | ||
41 | AliGenScan::AliGenScan(Int_t npart) | |
42 | :AliGenerator(npart) | |
43 | { | |
f87cfe57 | 44 | // Constructor |
8b31bfac | 45 | fName = "Scan"; |
46 | fTitle = "Generator for particles on a grid"; | |
47 | ||
48 | ||
38f1bd58 | 49 | fXCmin=0; |
50 | fXCmax=0; | |
b0418df4 | 51 | fNx=1; |
38f1bd58 | 52 | fYCmin=0; |
53 | fYCmax=0; | |
b0418df4 | 54 | fNy=1; |
55 | fZmin=0; | |
56 | fZmax=0; | |
57 | fNz=1; | |
58 | } | |
59 | ||
60 | //____________________________________________________________ | |
61 | AliGenScan::~AliGenScan() | |
f87cfe57 | 62 | { |
63 | // Destructor | |
64 | } | |
b0418df4 | 65 | |
66 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
67 | Int_t ny, Float_t ymin, Float_t ymax, | |
68 | Int_t nz, Float_t zmin, Float_t zmax) | |
69 | { | |
f87cfe57 | 70 | // Define the grid |
38f1bd58 | 71 | fXCmin=xmin; |
72 | fXCmax=xmax; | |
b0418df4 | 73 | fNx=nx; |
38f1bd58 | 74 | fYCmin=ymin; |
75 | fYCmax=ymax; | |
b0418df4 | 76 | fNy=ny; |
77 | fZmin=zmin; | |
78 | fZmax=zmax; | |
79 | fNz=nz; | |
80 | } | |
81 | ||
82 | //____________________________________________________________ | |
83 | void AliGenScan::Generate() | |
84 | { | |
85 | // | |
86 | // Generate one trigger | |
87 | // | |
b0418df4 | 88 | |
89 | Float_t polar[3]= {0,0,0}; | |
90 | // | |
91 | Float_t origin[3]; | |
92 | Float_t p[3]; | |
93 | Int_t nt; | |
94 | Float_t pmom, theta, phi; | |
95 | // | |
96 | Float_t random[6]; | |
97 | Float_t dx,dy,dz; | |
98 | ||
99 | // | |
8a5ca7c5 | 100 | if (fNx > 0) { |
38f1bd58 | 101 | dx=(fXCmax-fXCmin)/fNx; |
b0418df4 | 102 | } else { |
103 | dx=1e10; | |
104 | } | |
105 | ||
106 | if (fNy > 0) { | |
38f1bd58 | 107 | dy=(fYCmax-fYCmin)/fNy; |
b0418df4 | 108 | } else { |
109 | dy=1e10; | |
110 | } | |
111 | ||
112 | if (fNz > 0) { | |
113 | dz=(fZmax-fZmin)/fNz; | |
114 | } else { | |
115 | dz=1e10; | |
116 | } | |
117 | for (Int_t ix=0; ix<fNx; ix++) { | |
118 | for (Int_t iy=0; iy<fNy; iy++) { | |
119 | for (Int_t iz=0; iz<fNz; iz++){ | |
65fb704d | 120 | Rndm(random,6); |
38f1bd58 | 121 | origin[0]=fXCmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; |
122 | origin[1]=fYCmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
b0418df4 | 123 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; |
124 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
125 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
126 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
127 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
128 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
129 | p[2] = pmom*TMath::Cos(theta); | |
a99cf51f | 130 | SetTrack(fTrackIt,-1,fIpart,p,origin,polar,0,kPPrimary,nt); |
b0418df4 | 131 | } |
132 | } | |
133 | } | |
134 | } | |
135 | ||
136 | ||
137 | ||
138 | ||
139 | ||
140 | ||
141 | ||
142 | ||
143 |