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6872c613 | 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 | ||
20 | #include "AliLegoGeneratorPhiZ.h" | |
21 | #include "AliRun.h" | |
22 | ||
23 | ClassImp(AliLegoGeneratorPhiZ) | |
24 | ||
25 | ||
26 | //___________________________________________ | |
27 | void AliLegoGeneratorPhiZ::Generate() | |
28 | { | |
29 | // Create a geantino with kinematics corresponding to the current bins | |
30 | // Here: Coor1 = Z | |
31 | // Coor2 = phi. | |
32 | ||
33 | // | |
34 | // Rootinos are 0 | |
35 | const Int_t kMpart = 0; | |
36 | Float_t orig[3], pmom[3]; | |
37 | Float_t t, cosp, sinp; | |
38 | if (fCoor1Bin==-1) fCoor1Bin=fNCoor1; | |
39 | // Prepare for next step | |
40 | if(fCoor1Bin>=fNCoor1-1) | |
41 | if(fCoor2Bin>=fNCoor2-1) { | |
42 | Warning("Generate","End of Lego Generation"); | |
43 | return; | |
44 | } else { | |
45 | fCoor2Bin++; | |
46 | printf("Generating rays in phi bin:%d\n",fCoor2Bin); | |
47 | fCoor1Bin=0; | |
48 | } else fCoor1Bin++; | |
49 | ||
50 | fCurCoor1 = (fCoor1Min+(fCoor1Bin+0.5)*(fCoor1Max-fCoor1Min)/fNCoor1); | |
51 | fCurCoor2 = (fCoor2Min+(fCoor2Bin+0.5)*(fCoor2Max-fCoor2Min)/fNCoor2); | |
52 | ||
53 | Float_t phi = fCurCoor1*TMath::Pi()/180.; | |
54 | ||
55 | cosp = TMath::Cos(phi); | |
56 | sinp = TMath::Sin(phi); | |
57 | ||
58 | pmom[0] = cosp; | |
59 | pmom[1] = sinp; | |
60 | pmom[2] = 0.; | |
61 | ||
62 | // --- Where to start | |
63 | orig[0] = orig[1] = orig[2] = 0; | |
64 | orig[2] = fCurCoor2; | |
65 | ||
66 | Float_t dalicz = 3000; | |
67 | if (fRadMin > 0) { | |
68 | t = PropagateCylinder(orig,pmom,fRadMin,dalicz); | |
69 | orig[0] = pmom[0]*t; | |
70 | orig[1] = pmom[1]*t; | |
71 | orig[2] = pmom[2]*t; | |
72 | if (TMath::Abs(orig[2]) > fZMax) return; | |
73 | } | |
74 | ||
75 | Float_t polar[3]={0.,0.,0.}; | |
76 | Int_t ntr; | |
77 | gAlice->SetTrack(1, 0, kMpart, pmom, orig, polar, 0, "LEGO ray", ntr); | |
78 | ||
79 | } |