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b0418df4 | 1 | #include "AliGenScan.h" |
2 | #include <stdlib.h> | |
3 | #include "AliRun.h" | |
4 | ClassImp(AliGenScan) | |
5 | ||
6 | AliGenScan::AliGenScan() | |
7 | :AliGenerator(-1) | |
8 | { | |
9 | // | |
10 | fXmin=0; | |
11 | fXmax=0; | |
12 | fNx=1; | |
13 | fYmin=0; | |
14 | fYmax=0; | |
15 | fNy=1; | |
16 | fZmin=0; | |
17 | fZmax=0; | |
18 | fNz=1; | |
19 | // | |
20 | // Read all particles | |
21 | fNpart=-1; | |
22 | } | |
23 | ||
24 | AliGenScan::AliGenScan(Int_t npart) | |
25 | :AliGenerator(npart) | |
26 | { | |
27 | fXmin=0; | |
28 | fXmax=0; | |
29 | fNx=1; | |
30 | fYmin=0; | |
31 | fYmax=0; | |
32 | fNy=1; | |
33 | fZmin=0; | |
34 | fZmax=0; | |
35 | fNz=1; | |
36 | } | |
37 | ||
38 | //____________________________________________________________ | |
39 | AliGenScan::~AliGenScan() | |
40 | {} | |
41 | ||
42 | void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax, | |
43 | Int_t ny, Float_t ymin, Float_t ymax, | |
44 | Int_t nz, Float_t zmin, Float_t zmax) | |
45 | { | |
46 | fXmin=xmin; | |
47 | fXmax=xmax; | |
48 | fNx=nx; | |
49 | fYmin=ymin; | |
50 | fYmax=ymax; | |
51 | fNy=ny; | |
52 | fZmin=zmin; | |
53 | fZmax=zmax; | |
54 | fNz=nz; | |
55 | } | |
56 | ||
57 | //____________________________________________________________ | |
58 | void AliGenScan::Generate() | |
59 | { | |
60 | // | |
61 | // Generate one trigger | |
62 | // | |
63 | AliMC* pMC = AliMC::GetMC(); | |
64 | ||
65 | Float_t polar[3]= {0,0,0}; | |
66 | // | |
67 | Float_t origin[3]; | |
68 | Float_t p[3]; | |
69 | Int_t nt; | |
70 | Float_t pmom, theta, phi; | |
71 | // | |
72 | Float_t random[6]; | |
73 | Float_t dx,dy,dz; | |
74 | ||
75 | // | |
76 | if (fNy > 0) { | |
77 | dx=(fXmax-fXmin)/fNx; | |
78 | } else { | |
79 | dx=1e10; | |
80 | } | |
81 | ||
82 | if (fNy > 0) { | |
83 | dy=(fYmax-fYmin)/fNy; | |
84 | } else { | |
85 | dy=1e10; | |
86 | } | |
87 | ||
88 | if (fNz > 0) { | |
89 | dz=(fZmax-fZmin)/fNz; | |
90 | } else { | |
91 | dz=1e10; | |
92 | } | |
93 | for (Int_t ix=0; ix<fNx; ix++) { | |
94 | for (Int_t iy=0; iy<fNy; iy++) { | |
95 | for (Int_t iz=0; iz<fNz; iz++){ | |
96 | pMC->Rndm(random,6); | |
97 | origin[0]=fXmin+ix*dx+2*(random[0]-0.5)*fOsigma[0]; | |
98 | origin[1]=fYmin+iy*dy+2*(random[1]-0.5)*fOsigma[1]; | |
99 | origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2]; | |
100 | pmom=fPMin+random[3]*(fPMax-fPMin); | |
101 | theta=fThetaMin+random[4]*(fThetaMax-fThetaMin); | |
102 | phi=fPhiMin+random[5]*(fPhiMax-fPhiMin); | |
103 | p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta); | |
104 | p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta); | |
105 | p[2] = pmom*TMath::Cos(theta); | |
106 | gAlice->SetTrack(1,-1,fIpart,p,origin,polar,0,"Primary",nt); | |
107 | } | |
108 | } | |
109 | } | |
110 | } | |
111 | ||
112 | ||
113 | ||
114 | ||
115 | ||
116 | ||
117 | ||
118 | ||
119 |