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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 | /* $Id$ */ | |
17 | ||
18 | ///////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // Tracking sector // | |
21 | // // | |
22 | ///////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | #include <TObject.h> | |
25 | ||
26 | #include "AliRun.h" | |
27 | ||
28 | #include "AliTRD.h" | |
29 | #include "AliTRDgeometry.h" | |
30 | #include "AliTRDcluster.h" | |
31 | #include "AliTRDtimeBin.h" | |
32 | #include "AliTRDtrackingSector.h" | |
33 | #include "AliTRDparameter.h" | |
34 | ||
35 | ClassImp(AliTRDtrackingSector) | |
36 | ||
37 | //_______________________________________________________ | |
38 | AliTRDtrackingSector::~AliTRDtrackingSector() | |
39 | { | |
40 | // | |
41 | // Destructor | |
42 | // | |
43 | ||
44 | delete fTimeBin; | |
45 | ||
46 | } | |
47 | ||
48 | //_______________________________________________________ | |
49 | AliTRDtimeBin &AliTRDtrackingSector::operator[](Int_t i) | |
50 | { | |
51 | // | |
52 | // Index operator | |
53 | // | |
54 | ||
55 | return *(fTimeBin+i); | |
56 | ||
57 | } | |
58 | ||
59 | //_______________________________________________________ | |
60 | void AliTRDtrackingSector::SetUp() | |
61 | { | |
62 | // | |
63 | // Initialization | |
64 | // | |
65 | ||
66 | AliTRD *trd = (AliTRD*) gAlice->GetDetector("TRD"); | |
67 | fGeom = trd->GetGeometry(); | |
68 | ||
69 | fTimeBinSize = fGeom->GetTimeBinSize(); | |
70 | ||
71 | fN = AliTRDgeometry::Nplan() * (Int_t(AliTRDgeometry::DrThick() | |
72 | /fTimeBinSize) + 1); | |
73 | ||
74 | fTimeBin = new AliTRDtimeBin[fN]; | |
75 | ||
76 | if (!fPar) { | |
77 | fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter"); | |
78 | } | |
79 | ||
80 | fTimeBinSize = fPar->GetTimeBinSize(); | |
81 | ||
82 | } | |
83 | ||
84 | //______________________________________________________ | |
85 | Double_t AliTRDtrackingSector::GetX(Int_t tb) const | |
86 | { | |
87 | // | |
88 | // Get global x coordinate | |
89 | // | |
90 | ||
91 | if( (tb<0) || (tb>fN-1)) { | |
92 | fprintf(stderr,"AliTRDtrackingSector::GetX: TimeBin index is out of range !\n"); | |
93 | return -99999.; | |
94 | } | |
95 | else { | |
96 | ||
97 | Int_t tbPerPlane = fN/AliTRDgeometry::Nplan(); | |
98 | Int_t localTb = tbPerPlane - tb%tbPerPlane - 1; | |
99 | ||
100 | Int_t plane = tb/tbPerPlane; | |
101 | Float_t t0 = fPar->GetTime0(plane); | |
102 | Double_t x = t0 - (localTb + 0.5) * fTimeBinSize; | |
103 | ||
104 | return x; | |
105 | ||
106 | } | |
107 | ||
108 | } | |
109 | ||
110 | //______________________________________________________ | |
111 | Int_t AliTRDtrackingSector::GetTimeBinNumber(Double_t x) const | |
112 | { | |
113 | // | |
114 | // Returns the time bin number | |
115 | // | |
116 | ||
117 | Float_t rOut = fPar->GetTime0(AliTRDgeometry::Nplan()-1); | |
118 | Float_t rIn = fPar->GetTime0(0) - AliTRDgeometry::DrThick(); | |
119 | ||
120 | ||
121 | if(x >= rOut) return fN-1; | |
122 | if(x <= rIn) return 0; | |
123 | ||
124 | Int_t plane; | |
125 | for (plane = AliTRDgeometry::Nplan()-1; plane >= 0; plane--) { | |
126 | if(x > (fPar->GetTime0(plane) - AliTRDgeometry::DrThick())) break; | |
127 | } | |
128 | ||
129 | Int_t tbPerPlane = fN/AliTRDgeometry::Nplan(); | |
130 | Int_t localTb = Int_t((fPar->GetTime0(plane)-x)/fTimeBinSize); | |
131 | ||
132 | if((localTb < 0) || (localTb >= tbPerPlane)) { | |
133 | printf("AliTRDtrackingSector::GetTimeBinNumber: \n"); | |
134 | printf("local time bin %d is out of bounds [0..%d]: x = %f \n", | |
135 | localTb,tbPerPlane-1,x); | |
136 | return -1; | |
137 | } | |
138 | ||
139 | Int_t timeBin = (plane + 1) * tbPerPlane - 1 - localTb; | |
140 | ||
141 | return timeBin; | |
142 | } | |
143 | ||
144 | //______________________________________________________ | |
145 | Int_t AliTRDtrackingSector::GetTimeBin(Int_t det, Int_t localTb) const | |
146 | { | |
147 | // | |
148 | // Time bin | |
149 | // | |
150 | ||
151 | Int_t plane = fGeom->GetPlane(det); | |
152 | ||
153 | Int_t tbPerPlane = fN/AliTRDgeometry::Nplan(); | |
154 | ||
155 | Int_t timeBin = (plane + 1) * tbPerPlane - 1 - localTb; | |
156 | ||
157 | return timeBin; | |
158 | ||
159 | } | |
160 | ||
161 | ||
162 | //______________________________________________________ | |
163 | ||
164 | Bool_t AliTRDtrackingSector::TECframe(Int_t tb, Double_t y, Double_t z) const | |
165 | { | |
166 | // | |
167 | // Returns <true> if point defined by <x(tb),y,z> is within | |
168 | // the TEC G10 frame, otherwise returns <false> | |
169 | // | |
170 | ||
171 | if((tb > (fN-1)) || (tb < 0)) return kFALSE; | |
172 | ||
173 | Int_t tbPerPlane = fN/AliTRDgeometry::Nplan(); | |
174 | Int_t plane = tb/tbPerPlane; | |
175 | ||
176 | Double_t x = GetX(tb); | |
177 | y = TMath::Abs(y); | |
178 | ||
179 | if((y > fGeom->GetChamberWidth(plane)/2.) && | |
180 | (y < x*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()))) return kTRUE; | |
181 | ||
182 | Double_t zmin, zmax; | |
183 | Float_t fRowPadSize, fRow0; | |
184 | Int_t nPadRows; | |
185 | ||
186 | for(Int_t iCha = 1; iCha < AliTRDgeometry::Ncham(); iCha++) { | |
187 | ||
188 | fRow0 = fPar->GetRow0(plane,iCha-1,0); | |
189 | fRowPadSize = fPar->GetRowPadSize(plane,iCha-1,0); | |
190 | nPadRows = fPar->GetRowMax(plane,iCha-1,0); | |
191 | zmin = fRow0 - fRowPadSize/2 + fRowPadSize * nPadRows; | |
192 | ||
193 | fRow0 = fPar->GetRow0(plane,iCha,0); | |
194 | fRowPadSize = fPar->GetRowPadSize(plane,iCha,0); | |
195 | zmax = fRow0 - fRowPadSize/2; | |
196 | ||
197 | if((z > zmin) && (z < zmax)) return kTRUE; | |
198 | } | |
199 | ||
200 | return kFALSE; | |
201 | ||
202 | } |