1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.9 2001/07/27 17:09:36 morsch
19 Use local SetTrack, KeepTrack and SetHighWaterMark methods
20 to delegate either to local stack or to stack owned by AliRun.
21 (Piotr Skowronski, A.M.)
23 Revision 1.8 2000/12/06 15:11:38 morsch
24 Correct double declared data members.
26 Revision 1.7 2000/11/30 07:12:50 alibrary
27 Introducing new Rndm and QA classes
29 Revision 1.6 2000/10/02 21:28:06 fca
30 Removal of useless dependecies via forward declarations
32 Revision 1.5 2000/06/09 20:37:20 morsch
33 All coding rule violations except RS3 corrected
35 Revision 1.4 1999/11/03 17:43:20 fca
36 New version from G.Martinez & A.Morsch
38 Revision 1.3 1999/09/29 09:24:14 fca
39 Introduction of the Copyright and cvs Log
43 #include "AliGenScan.h"
48 AliGenScan::AliGenScan()
66 AliGenScan::AliGenScan(Int_t npart)
71 fTitle = "Generator for particles on a grid";
85 //____________________________________________________________
86 AliGenScan::~AliGenScan()
91 void AliGenScan::SetRange(Int_t nx, Float_t xmin, Float_t xmax,
92 Int_t ny, Float_t ymin, Float_t ymax,
93 Int_t nz, Float_t zmin, Float_t zmax)
107 //____________________________________________________________
108 void AliGenScan::Generate()
111 // Generate one trigger
114 Float_t polar[3]= {0,0,0};
119 Float_t pmom, theta, phi;
126 dx=(fXCmax-fXCmin)/fNx;
132 dy=(fYCmax-fYCmin)/fNy;
138 dz=(fZmax-fZmin)/fNz;
142 for (Int_t ix=0; ix<fNx; ix++) {
143 for (Int_t iy=0; iy<fNy; iy++) {
144 for (Int_t iz=0; iz<fNz; iz++){
146 origin[0]=fXCmin+ix*dx+2*(random[0]-0.5)*fOsigma[0];
147 origin[1]=fYCmin+iy*dy+2*(random[1]-0.5)*fOsigma[1];
148 origin[2]=fZmin+iz*dz+2*(random[2]-0.5)*fOsigma[2];
149 pmom=fPMin+random[3]*(fPMax-fPMin);
150 theta=fThetaMin+random[4]*(fThetaMax-fThetaMin);
151 phi=fPhiMin+random[5]*(fPhiMax-fPhiMin);
152 p[0] = pmom*TMath::Cos(phi)*TMath::Sin(theta);
153 p[1] = pmom*TMath::Sin(phi)*TMath::Sin(theta);
154 p[2] = pmom*TMath::Cos(theta);
155 SetTrack(fTrackIt,-1,fIpart,p,origin,polar,0,kPPrimary,nt);