1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.3 2000/12/08 16:07:02 cblume
19 Update of the tracking by Sergei
21 Revision 1.2 2000/10/06 16:49:46 cblume
24 Revision 1.1.2.1 2000/09/22 14:47:52 cblume
29 #include "AliTRDcluster.h"
30 #include "AliTRDgeometry.h"
31 #include "AliTRDrecPoint.h"
33 ClassImp(AliTRDcluster)
35 //_____________________________________________________________________________
36 AliTRDcluster::AliTRDcluster()
39 // Default constructor
55 //_____________________________________________________________________________
56 AliTRDcluster::AliTRDcluster(const AliTRDrecPoint &p)
59 // Constructor from AliTRDrecPoint
62 fDetector = p.GetDetector();
63 fTimeBin = p.GetLocalTimeBin();
65 fTracks[0] = p.GetTrackIndex(0);
66 fTracks[1] = p.GetTrackIndex(1);
67 fTracks[2] = p.GetTrackIndex(2);
73 fSigmaY2 = p.GetSigmaY2();
74 fSigmaZ2 = p.GetSigmaZ2();
81 //_____________________________________________________________________________
82 AliTRDcluster::AliTRDcluster(const AliTRDcluster &c)
88 ((AliTRDcluster &) c).Copy(*this);
92 //_____________________________________________________________________________
93 AliTRDcluster::~AliTRDcluster()
96 // AliTRDcluster destructor
101 //_____________________________________________________________________________
102 AliTRDcluster &AliTRDcluster::operator=(const AliTRDcluster &c)
105 // Assignment operator
108 if (this != &c) ((AliTRDcluster &) c).Copy(*this);
113 //_____________________________________________________________________________
114 void AliTRDcluster::Copy(TObject &c)
120 ((AliTRDcluster &) c).fDetector = fDetector;
121 ((AliTRDcluster &) c).fTimeBin = fTimeBin;
123 ((AliTRDcluster &) c).fTracks[0] = fTracks[0];
124 ((AliTRDcluster &) c).fTracks[1] = fTracks[1];
125 ((AliTRDcluster &) c).fTracks[2] = fTracks[2];
127 ((AliTRDcluster &) c).fQ = fQ;
129 ((AliTRDcluster &) c).fY = fY;
130 ((AliTRDcluster &) c).fZ = fZ;
131 ((AliTRDcluster &) c).fSigmaY2 = fSigmaY2;
132 ((AliTRDcluster &) c).fSigmaZ2 = fSigmaZ2;
137 //_____________________________________________________________________________
138 void AliTRDcluster::AddTrackIndex(Int_t *track)
141 // Adds track index. Currently assumed that track is an array of
142 // size 9, and up to 3 track indexes are stored in fTracks[3].
143 // Indexes are sorted according to:
144 // 1) index of max number of appearances is stored first
145 // 2) if two or more indexes appear equal number of times, the lowest
146 // ones are stored first;
149 const Int_t size = 9;
151 Int_t entries[size][2], i, j, index;
155 for (i=0; i<size; i++) {
160 for (Int_t k=0; k<size; k++) {
162 index_added=kFALSE; j=0;
164 while ( (!index_added) && ( j < size ) ) {
165 if ((entries[j][0]==index) || (entries[j][1]==0)) {
167 entries[j][1]=entries[j][1]+1;
175 // sort by number of appearances and index value
176 Int_t swap=1, tmp0, tmp1;
179 for(i=0; i<(size-1); i++) {
180 if ((entries[i][0] >= 0) && (entries[i+1][0] >= 0)) {
181 if ((entries[i][1] < entries[i+1][1]) ||
182 ((entries[i][1] == entries[i+1][1]) &&
183 (entries[i][0] > entries[i+1][0]))) {
186 entries[i][0]=entries[i+1][0];
187 entries[i][1]=entries[i+1][1];
188 entries[i+1][0]=tmp0;
189 entries[i+1][1]=tmp1;
198 fTracks[i] = entries[i][0];