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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 | ||
16 | #include "AliTRDmcTrack.h" | |
17 | #include "AliTRDgeometry.h" | |
18 | ||
fd621f36 | 19 | |
16bf9884 | 20 | ClassImp(AliTRDmcTrack) |
21 | ||
22 | //_____________________________________________________________________________ | |
23 | AliTRDmcTrack::AliTRDmcTrack() | |
24 | { | |
25 | ||
26 | // | |
27 | // Default constructor | |
28 | // | |
29 | ||
30 | fLab = -1; | |
31 | fPrimary = kFALSE; | |
32 | fMass = 0; | |
33 | fCharge = 0; | |
34 | fN = 0; | |
35 | ||
fd621f36 | 36 | for(Int_t i=0; i<kMAX_CLUSTERS_PER_MC_TRACK; i++) fIndex[i]=-1; |
16bf9884 | 37 | |
38 | for(Int_t i=0; i<6; i++) { | |
39 | for(Int_t j=0; j<3; j++) { | |
fd621f36 | 40 | Pin[i][j]=0.; |
41 | Pout[i][j] = 0.; | |
42 | XYZin[i][j]=0.; | |
43 | XYZout[i][j] = 0.; | |
16bf9884 | 44 | } |
45 | } | |
46 | ||
47 | } | |
48 | ||
49 | //_____________________________________________________________________________ | |
50 | AliTRDmcTrack::AliTRDmcTrack(Int_t label, Bool_t primary, Float_t mass | |
51 | ,Int_t charge, Int_t pdg) | |
52 | { | |
53 | ||
54 | // | |
55 | // Main constructor | |
56 | // | |
57 | ||
58 | fLab = label; | |
59 | fPrimary = primary; | |
60 | fMass = mass; | |
61 | fCharge = charge; | |
62 | fPDG = pdg; | |
63 | fN = 0; | |
64 | ||
fd621f36 | 65 | for(Int_t i=0; i<kMAX_CLUSTERS_PER_MC_TRACK; i++) fIndex[i]=-1; |
16bf9884 | 66 | |
67 | for(Int_t i=0; i<6; i++) { | |
68 | for(Int_t j=0; j<3; j++) { | |
fd621f36 | 69 | Pin[i][j]=0.; |
70 | Pout[i][j] = 0.; | |
71 | XYZin[i][j]=0.; | |
72 | XYZout[i][j] = 0.; | |
16bf9884 | 73 | } |
74 | } | |
75 | ||
76 | } | |
77 | ||
78 | //_____________________________________________________________________________ | |
fd621f36 | 79 | void AliTRDmcTrack::GetPxPyPzXYZ(Double_t& px, Double_t& py, Double_t& pz, |
80 | Double_t& x, Double_t& y, Double_t& z, | |
81 | Int_t opt) const | |
16bf9884 | 82 | { |
83 | // | |
fd621f36 | 84 | // Returns track momentum components and coordinates at the entrance |
85 | // (opt >= 0), or exit (opt < 0) of TRD. | |
16bf9884 | 86 | // |
87 | ||
88 | Int_t i; | |
89 | ||
90 | if(opt >= 0) { | |
91 | for(i = 0; i < AliTRDgeometry::Nplan(); i++) { | |
fd621f36 | 92 | if( Pin[i][0] * Pin[i][0] |
93 | + Pin[i][1] * Pin[i][1] | |
94 | + Pin[i][2] * Pin[i][2] > 0.0005) break; | |
16bf9884 | 95 | } |
fd621f36 | 96 | px = Pin[i][0]; py = Pin[i][1]; pz = Pin[i][2]; |
97 | x = XYZin[i][0]; y = XYZin[i][1]; z = XYZin[i][2]; | |
16bf9884 | 98 | } |
99 | else { | |
100 | for(i = AliTRDgeometry::Nplan() - 1; i >= 0; i--) { | |
fd621f36 | 101 | if( Pout[i][0] * Pout[i][0] |
102 | + Pout[i][1] * Pout[i][1] | |
103 | + Pout[i][2] * Pout[i][2] > 0.0005) break; | |
16bf9884 | 104 | } |
fd621f36 | 105 | px = Pout[i][0]; py = Pout[i][1]; pz = Pout[i][2]; |
106 | x = XYZout[i][0]; y = XYZout[i][1]; z = XYZout[i][2]; | |
16bf9884 | 107 | } |
16bf9884 | 108 | return; |
16bf9884 | 109 | } |
110 | ||
111 | //_____________________________________________________________________________ | |
112 | void AliTRDmcTrack::GetPlanePxPyPz(Double_t& px, Double_t& py, Double_t& pz, | |
a3d851c2 | 113 | Int_t plane, Int_t opt) const |
16bf9884 | 114 | { |
115 | // | |
116 | // Returns momentum components at the entrance (opt >= 0), or | |
117 | // exit (opt < 0) of TRD plane <plane>. | |
118 | // | |
119 | ||
120 | if(opt >= 0) { | |
fd621f36 | 121 | px = Pin[plane][0]; py = Pin[plane][1]; pz = Pin[plane][2]; |
16bf9884 | 122 | } |
123 | else { | |
fd621f36 | 124 | px = Pout[plane][0]; py = Pout[plane][1]; pz = Pout[plane][2]; |
16bf9884 | 125 | } |
16bf9884 | 126 | return; |
16bf9884 | 127 | } |
fd621f36 | 128 | |
129 |