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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 | $Log$ | |
18 | */ | |
19 | ||
b0418df4 | 20 | #include "AliGenScan.h" |
21 | #include <stdlib.h> | |
22 | #include "AliRun.h" | |
23 | ClassImp(AliGenScan) | |
24 | ||
25 | AliGenScan::AliGenScan() | |
26 | :AliGenerator(-1) | |
27 | { | |
28 | // | |
29 | fXmin=0; | |
30 | fXmax=0; | |
31 | fNx=1; | |
32 | fYmin=0; | |
33 | fYmax=0; | |
34 | fNy=1; | |
35 | fZmin=0; | |
36 | fZmax=0; | |
37 | fNz=1; | |
38 | // | |
39 | // Read all particles | |
40 | fNpart=-1; | |
41 | } | |
42 | ||
43 | AliGenScan::AliGenScan(Int_t npart) | |
44 | :AliGenerator(npart) | |
45 | { | |
46 | fXmin=0; | |
47 | fXmax=0; | |
48 | fNx=1; | |
49 | fYmin=0; | |
50 | fYmax=0; | |
51 | fNy=1; | |
52 | fZmin=0; | |
53 | fZmax=0; | |
54 | fNz=1; | |
55 | } | |
56 | ||
57 | //____________________________________________________________ | |
58 | AliGenScan::~AliGenScan() | |
59 | {} | |
60 | ||
61 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
62 | Int_t ny, Float_t ymin, Float_t ymax, | |
63 | Int_t nz, Float_t zmin, Float_t zmax) | |
64 | { | |
65 | fXmin=xmin; | |
66 | fXmax=xmax; | |
67 | fNx=nx; | |
68 | fYmin=ymin; | |
69 | fYmax=ymax; | |
70 | fNy=ny; | |
71 | fZmin=zmin; | |
72 | fZmax=zmax; | |
73 | fNz=nz; | |
74 | } | |
75 | ||
76 | //____________________________________________________________ | |
77 | void AliGenScan::Generate() | |
78 | { | |
79 | // | |
80 | // Generate one trigger | |
81 | // | |
b0418df4 | 82 | |
83 | Float_t polar[3]= {0,0,0}; | |
84 | // | |
85 | Float_t origin[3]; | |
86 | Float_t p[3]; | |
87 | Int_t nt; | |
88 | Float_t pmom, theta, phi; | |
89 | // | |
90 | Float_t random[6]; | |
91 | Float_t dx,dy,dz; | |
92 | ||
93 | // | |
94 | if (fNy > 0) { | |
95 | dx=(fXmax-fXmin)/fNx; | |
96 | } else { | |
97 | dx=1e10; | |
98 | } | |
99 | ||
100 | if (fNy > 0) { | |
101 | dy=(fYmax-fYmin)/fNy; | |
102 | } else { | |
103 | dy=1e10; | |
104 | } | |
105 | ||
106 | if (fNz > 0) { | |
107 | dz=(fZmax-fZmin)/fNz; | |
108 | } else { | |
109 | dz=1e10; | |
110 | } | |
111 | for (Int_t ix=0; ix<fNx; ix++) { | |
112 | for (Int_t iy=0; iy<fNy; iy++) { | |
113 | for (Int_t iz=0; iz<fNz; iz++){ | |
cfce8870 | 114 | gMC->Rndm(random,6); |
b0418df4 | 115 | origin[0]=fXmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; |
116 | origin[1]=fYmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
117 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; | |
118 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
119 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
120 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
121 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
122 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
123 | p[2] = pmom*TMath::Cos(theta); | |
124 | gAlice->SetTrack(1,-1,fIpart,p,origin,polar,0,"Primary",nt); | |
125 | } | |
126 | } | |
127 | } | |
128 | } | |
129 | ||
130 | ||
131 | ||
132 | ||
133 | ||
134 | ||
135 | ||
136 | ||
137 |