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16bf9884 | 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 | ||
0a29d0f1 | 16 | /////////////////////////////////////////////////////////////////////////////// |
17 | // // | |
18 | // TRD MC track // | |
19 | // Used for efficiency estimates and matching of reconstructed tracks // | |
20 | // to MC particles // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
16bf9884 | 24 | #include "AliTRDmcTrack.h" |
25 | #include "AliTRDgeometry.h" | |
26 | ||
27 | ClassImp(AliTRDmcTrack) | |
28 | ||
29 | //_____________________________________________________________________________ | |
30 | AliTRDmcTrack::AliTRDmcTrack() | |
31 | { | |
32 | ||
33 | // | |
34 | // Default constructor | |
35 | // | |
36 | ||
37 | fLab = -1; | |
38 | fPrimary = kFALSE; | |
39 | fMass = 0; | |
40 | fCharge = 0; | |
41 | fN = 0; | |
42 | ||
43 | for(Int_t i=0; i<200; i++) fIndex[i]=-1; | |
44 | ||
45 | for(Int_t i=0; i<6; i++) { | |
46 | for(Int_t j=0; j<3; j++) { | |
0a29d0f1 | 47 | fPin[i][j]=0.; |
48 | fPout[i][j] = 0.; | |
16bf9884 | 49 | } |
50 | } | |
51 | ||
52 | } | |
53 | ||
54 | //_____________________________________________________________________________ | |
55 | AliTRDmcTrack::AliTRDmcTrack(Int_t label, Bool_t primary, Float_t mass | |
56 | ,Int_t charge, Int_t pdg) | |
57 | { | |
58 | ||
59 | // | |
60 | // Main constructor | |
61 | // | |
62 | ||
63 | fLab = label; | |
64 | fPrimary = primary; | |
65 | fMass = mass; | |
66 | fCharge = charge; | |
67 | fPDG = pdg; | |
68 | fN = 0; | |
69 | ||
70 | for(Int_t i=0; i<200; i++) fIndex[i]=-1; | |
71 | ||
72 | for(Int_t i=0; i<6; i++) { | |
73 | for(Int_t j=0; j<3; j++) { | |
0a29d0f1 | 74 | fPin[i][j]=0.; |
75 | fPout[i][j] = 0.; | |
16bf9884 | 76 | } |
77 | } | |
78 | ||
79 | } | |
80 | ||
81 | //_____________________________________________________________________________ | |
82 | void AliTRDmcTrack::GetPxPyPz(Double_t& px, Double_t& py, Double_t& pz, | |
a3d851c2 | 83 | Int_t opt) const |
16bf9884 | 84 | { |
85 | // | |
86 | // Returns momentum components at the entrance (opt >= 0), or | |
87 | // exit (opt < 0) of TRD. | |
88 | // | |
89 | ||
90 | Int_t i; | |
91 | ||
92 | if(opt >= 0) { | |
93 | for(i = 0; i < AliTRDgeometry::Nplan(); i++) { | |
0a29d0f1 | 94 | if( fPin[i][0] * fPin[i][0] |
95 | + fPin[i][1] * fPin[i][1] | |
96 | + fPin[i][2] * fPin[i][2] > 0.0005) break; | |
16bf9884 | 97 | } |
0a29d0f1 | 98 | px = fPin[0][0]; py = fPin[0][1]; pz = fPin[0][2]; |
16bf9884 | 99 | } |
100 | else { | |
101 | for(i = AliTRDgeometry::Nplan() - 1; i >= 0; i--) { | |
0a29d0f1 | 102 | if( fPout[i][0] * fPout[i][0] |
103 | + fPout[i][1] * fPout[i][1] | |
104 | + fPout[i][2] * fPout[i][2] > 0.0005) break; | |
16bf9884 | 105 | } |
0a29d0f1 | 106 | px = fPout[i][0]; py = fPout[i][1]; pz = fPout[i][2]; |
16bf9884 | 107 | } |
108 | ||
109 | return; | |
110 | ||
111 | } | |
112 | ||
113 | //_____________________________________________________________________________ | |
114 | void AliTRDmcTrack::GetPlanePxPyPz(Double_t& px, Double_t& py, Double_t& pz, | |
a3d851c2 | 115 | Int_t plane, Int_t opt) const |
16bf9884 | 116 | { |
117 | // | |
118 | // Returns momentum components at the entrance (opt >= 0), or | |
119 | // exit (opt < 0) of TRD plane <plane>. | |
120 | // | |
121 | ||
122 | if(opt >= 0) { | |
0a29d0f1 | 123 | px = fPin[plane][0]; py = fPin[plane][1]; pz = fPin[plane][2]; |
16bf9884 | 124 | } |
125 | else { | |
0a29d0f1 | 126 | px = fPout[plane][0]; py = fPout[plane][1]; pz = fPout[plane][2]; |
16bf9884 | 127 | } |
128 | ||
129 | return; | |
130 | ||
131 | } |