Last minute changes; ExB correction in AliTRDclusterizerV1; taking into account of...
[u/mrichter/AliRoot.git] / TRD / AliTRDtrackingSector.cxx
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46d29e70 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$Log$
a819a5f7 18Revision 1.5 2000/12/08 16:07:02 cblume
19Update of the tracking by Sergei
20
bbf92647 21Revision 1.4 2000/10/16 01:16:53 cblume
22Changed timebin 0 to be the one closest to the readout
23
ea6a8999 24Revision 1.3 2000/10/15 23:40:01 cblume
25Remove AliTRDconst
26
0e9c2ad5 27Revision 1.2 2000/10/06 16:49:46 cblume
28Made Getters const
29
46d29e70 30Revision 1.1.2.2 2000/10/04 16:34:58 cblume
31Replace include files by forward declarations
32
33Revision 1.1.2.1 2000/09/22 14:47:52 cblume
34Add the tracking code
35
36*/
37
38#include <TObject.h>
39
40#include "AliRun.h"
41
42#include "AliTRD.h"
46d29e70 43#include "AliTRDgeometry.h"
44#include "AliTRDcluster.h"
45#include "AliTRDtimeBin.h"
46d29e70 46#include "AliTRDtrackingSector.h"
47
46d29e70 48ClassImp(AliTRDtrackingSector)
49
50//_______________________________________________________
51
52AliTRDtrackingSector::~AliTRDtrackingSector()
53{
54 //
55 // Destructor
56 //
57
58 delete[] fTimeBin;
59
60}
61
62//_______________________________________________________
63AliTRDtimeBin &AliTRDtrackingSector::operator[](Int_t i)
64{
65 //
66 // Index operator
67 //
68
69 return *(fTimeBin+i);
70
71}
72
73//_______________________________________________________
74
75void AliTRDtrackingSector::SetUp()
76{
46d29e70 77 AliTRD *TRD = (AliTRD*) gAlice->GetDetector("TRD");
78 fGeom = TRD->GetGeometry();
79
80 fTimeBinSize = fGeom->GetTimeBinSize();
81
0e9c2ad5 82 fN = AliTRDgeometry::Nplan() * (Int_t(AliTRDgeometry::DrThick()
83 /fTimeBinSize) + 1);
46d29e70 84
85 fTimeBin = new AliTRDtimeBin[fN];
86
87}
88
89//______________________________________________________
90
a819a5f7 91Double_t AliTRDtrackingSector::GetX(Int_t tb) const
46d29e70 92{
a819a5f7 93 if( (tb<0) || (tb>fN-1)) {
46d29e70 94 fprintf(stderr,"AliTRDtrackingSector::GetX: TimeBin index is out of range !\n");
95 return -99999.;
96 }
97 else {
98
0e9c2ad5 99 Int_t tb_per_plane = fN/AliTRDgeometry::Nplan();
a819a5f7 100 Int_t local_tb = tb_per_plane - tb%tb_per_plane - 1;
46d29e70 101
a819a5f7 102 Int_t plane = tb/tb_per_plane;
46d29e70 103 Float_t t0 = fGeom->GetTime0(plane);
a819a5f7 104 Double_t x = t0 - (local_tb + 0.5) * fTimeBinSize;
46d29e70 105
106 return x;
107 }
108}
109
110//______________________________________________________
111
46d29e70 112Int_t AliTRDtrackingSector::GetTimeBinNumber(Double_t x) const
113{
ea6a8999 114 Float_t r_out = fGeom->GetTime0(AliTRDgeometry::Nplan()-1);
bbf92647 115 Float_t r_in = fGeom->GetTime0(0) - AliTRDgeometry::DrThick();
46d29e70 116
a819a5f7 117
46d29e70 118 if(x >= r_out) return fN-1;
119 if(x <= r_in) return 0;
120
a819a5f7 121 Int_t plane;
122 for (plane = AliTRDgeometry::Nplan()-1; plane >= 0; plane--) {
123 if(x > (fGeom->GetTime0(plane) - AliTRDgeometry::DrThick())) break;
124 }
125
bbf92647 126 Int_t tb_per_plane = fN/AliTRDgeometry::Nplan();
a819a5f7 127 Int_t local_tb = Int_t((fGeom->GetTime0(plane)-x)/fTimeBinSize);
bbf92647 128
a819a5f7 129 if((local_tb < 0) || (local_tb >= tb_per_plane)) {
130 printf("AliTRDtrackingSector::GetTimeBinNumber: \n");
131 printf("local time bin %d is out of bounds [0..%d]: x = %f \n",
132 local_tb,tb_per_plane-1,x);
133 return -1;
134 }
135
136 Int_t time_bin = (plane + 1) * tb_per_plane - 1 - local_tb;
46d29e70 137
138 return time_bin;
139}
140
141//______________________________________________________
142
143Int_t AliTRDtrackingSector::GetTimeBin(Int_t det, Int_t local_tb) const
144{
145 Int_t plane = fGeom->GetPlane(det);
146
bbf92647 147 Int_t tb_per_plane = fN/AliTRDgeometry::Nplan();
148
a819a5f7 149 Int_t time_bin = (plane + 1) * tb_per_plane - 1 - local_tb;
bbf92647 150
46d29e70 151 return time_bin;
152}
153
a819a5f7 154
155//______________________________________________________
156
157Bool_t AliTRDtrackingSector::TECframe(Int_t tb, Double_t y, Double_t z) const
158{
159//
160// Returns <true> if point defined by <x(tb),y,z> is within
161// the TEC G10 frame, otherwise returns <false>
162//
163
164 if((tb > (fN-1)) || (tb < 0)) return kFALSE;
165
166 Int_t tb_per_plane = fN/AliTRDgeometry::Nplan();
167 Int_t plane = tb/tb_per_plane;
168
169 Double_t x = GetX(tb);
170 y = TMath::Abs(y);
171
172 if((y > fGeom->GetChamberWidth(plane)/2.) &&
173 (y < x*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()))) return kTRUE;
174
175 Double_t zmin, zmax;
176 Float_t fRowPadSize, fRow0;
177 Int_t nPadRows;
178
179 for(Int_t iCha = 1; iCha < AliTRDgeometry::Ncham(); iCha++) {
180
181 fRow0 = fGeom->GetRow0(plane,iCha-1,0);
182 fRowPadSize = fGeom->GetRowPadSize(plane,iCha-1,0);
183 nPadRows = fGeom->GetRowMax(plane,iCha-1,0);
184 zmin = fRow0 - fRowPadSize/2 + fRowPadSize * nPadRows;
185
186 fRow0 = fGeom->GetRow0(plane,iCha,0);
187 fRowPadSize = fGeom->GetRowPadSize(plane,iCha,0);
188 zmax = fRow0 - fRowPadSize/2;
189
190 if((z > zmin) && (z < zmax)) return kTRUE;
191 }
192
193 return kFALSE;
194}