| 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 | |
git://git.uio.no / u / mrichter / AliRoot.git / blame