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4c039060 | 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 | ||
58005f18 | 20 | |
21 | #include <TMath.h> | |
22 | #include <TRandom.h> | |
23 | #include <TVector.h> | |
24 | #include <TGeometry.h> | |
25 | #include <TNode.h> | |
26 | #include <TTUBE.h> | |
27 | ||
28 | #include "AliITSgeom.h" | |
29 | #include "AliITS.h" | |
30 | #include "AliITShit.h" | |
31 | #include "AliRun.h" | |
32 | ||
33 | ||
34 | ClassImp(AliITShit) | |
35 | //////////////////////////////////////////////////////////////////////// | |
36 | // Version: 0 | |
37 | // Written by Rene Brun, Federico Carminati, and Roberto Barbera | |
38 | // | |
39 | // Version: 1 | |
40 | // Modified and documented by Bjorn S. Nilsen | |
41 | // July 11 1999 | |
42 | // | |
43 | // AliITShit is the hit class for the ITS. Hits are the information | |
44 | // that comes from a Monte Carlo at each step as a particle mass through | |
45 | // sensitive detector elements as particles are transported through a | |
46 | // detector. | |
47 | // | |
48 | //Begin_Html | |
49 | /* | |
a92b2b7d | 50 | <img src="picts/ITS/AliITShit_Class_Diagram.gif"> |
58005f18 | 51 | </pre> |
52 | <br clear=left> | |
53 | <font size=+2 color=red> | |
54 | <p>This show the relasionships between the ITS hit class and the rest of Aliroot. | |
55 | </font> | |
56 | <pre> | |
57 | */ | |
58 | //End_Html | |
59 | //_____________________________________________________________________________ | |
60 | AliITShit::AliITShit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits): | |
61 | AliHit(shunt, track){ | |
62 | // | |
63 | // Create ITS hit | |
64 | // The creator of the AliITShit class. The variables shunt and | |
65 | // track are passed to the creator of the AliHit class. See the AliHit | |
66 | // class for a full description. the integer array *vol contains, in order, | |
67 | // fLayer = vol[0], fDet = vol[1], fLadder = vol[2], fStatus = vol[3]. | |
68 | // The array *hits contains, in order, fX = hits[0], fY = hits[1], | |
69 | // fZ = hits[2], fPx = hits[3], fPy = hits[4], fPz = hits[5], | |
70 | // fDestep = hits[6], and fTof = hits[7]. | |
71 | // | |
72 | fLayer = vol[0]; // Layer number | |
73 | fLadder = vol[2]; // Ladder number | |
74 | fDet = vol[1]; // Detector number | |
75 | fStatus = vol[3]; // Track status flags | |
76 | fX = hits[0]; // Track X position | |
77 | fY = hits[1]; // Track Y position | |
78 | fZ = hits[2]; // Track Z position | |
79 | fPx = hits[3]; // Track X Momentum | |
80 | fPy = hits[4]; // Track Y Momentum | |
81 | fPz = hits[5]; // Track Z Momentum | |
82 | fDestep = hits[6]; // Track dE/dx for this step | |
83 | fTof = hits[7]; // Track Time of Flight for this step | |
84 | } | |
85 | ||
86 | void AliITShit::GetPositionL(Float_t &x,Float_t &y,Float_t &z){ | |
87 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
88 | Float_t g[3],l[3]; | |
89 | ||
90 | g[0] = fX; | |
91 | g[1] = fY; | |
92 | g[2] = fZ; | |
93 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
94 | x = l[0]; | |
95 | y = l[1]; | |
96 | z = l[2]; | |
97 | return; | |
98 | } | |
99 | ||
100 | void AliITShit::GetPositionL(Float_t &x,Float_t &y,Float_t &z,Float_t &tof){ | |
101 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
102 | Float_t g[3],l[3]; | |
103 | ||
104 | g[0] = fX; | |
105 | g[1] = fY; | |
106 | g[2] = fZ; | |
107 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
108 | x = l[0]; | |
109 | y = l[1]; | |
110 | z = l[2]; | |
111 | tof = fTof; | |
112 | return; | |
113 | } | |
114 | ||
115 | Float_t AliITShit::GetXL(){ | |
116 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
117 | Float_t g[3],l[3]; | |
118 | ||
119 | g[0] = fX; | |
120 | g[1] = fY; | |
121 | g[2] = fZ; | |
122 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
123 | return l[0]; | |
124 | } | |
125 | ||
126 | Float_t AliITShit::GetYL(){ | |
127 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
128 | Float_t g[3],l[3]; | |
129 | ||
130 | g[0] = fX; | |
131 | g[1] = fY; | |
132 | g[2] = fZ; | |
133 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
134 | return l[1]; | |
135 | } | |
136 | ||
137 | Float_t AliITShit::GetZL(){ | |
138 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
139 | Float_t g[3],l[3]; | |
140 | ||
141 | g[0] = fX; | |
142 | g[1] = fY; | |
143 | g[2] = fZ; | |
144 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
145 | return l[2]; | |
146 | } | |
147 | ||
148 | void AliITShit::GetMomentumL(Float_t &px,Float_t &py,Float_t &pz){ | |
149 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
150 | Float_t g[3],l[3]; | |
151 | ||
152 | g[0] = fPx; | |
153 | g[1] = fPy; | |
154 | g[2] = fPz; | |
155 | gm->GtoLMomentum(fLayer,fLadder,fDet,g,l); | |
156 | px = l[0]; | |
157 | py = l[1]; | |
158 | pz = l[2]; | |
159 | return; | |
160 | } |