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52c19022 | 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 | // // | |
18 | // A GTU track // | |
19 | // // | |
20 | // Author: J. Klein (Jochen.Klein@cern.ch) // | |
21 | // // | |
22 | //////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | /* $Id: AliTRDtrackGTU.cxx 27566 2008-07-24 15:31:08Z cblume $ */ | |
25 | ||
26 | #include "TObject.h" | |
27 | #include "TObjArray.h" | |
4cc89512 | 28 | #include "TClass.h" |
29 | #include "TH1F.h" | |
52c19022 | 30 | |
4d6aee34 | 31 | #include "AliESDTrdTrack.h" |
52c19022 | 32 | #include "AliLog.h" |
33 | #include "AliTRDgtuParam.h" | |
34 | #include "AliTRDtrackGTU.h" | |
35 | #include "AliTRDtrackletGTU.h" | |
4cc89512 | 36 | #include "AliTRDtrackletMCM.h" |
52c19022 | 37 | #include "AliESDTrdTrack.h" |
38 | ||
39 | ClassImp(AliTRDtrackGTU) | |
5f006bd7 | 40 | |
52c19022 | 41 | AliTRDtrackGTU::AliTRDtrackGTU() : |
42 | TObject(), | |
43 | fStack(-1), | |
44 | fSector(-1), | |
52c19022 | 45 | fPID(0), |
46 | fTracklets(0x0), | |
47 | fTrackletMask(0), | |
48 | fNTracklets(0), | |
49 | fRefLayerIdx(-1), | |
50 | fZChannel(-1), | |
51 | fZSubChannel(-1), | |
52 | fA(0), | |
53 | fB(0), | |
4cc89512 | 54 | fC(0), |
55 | fLabel(-1) | |
52c19022 | 56 | { |
4cc89512 | 57 | // default ctor |
58 | ||
52c19022 | 59 | fTracklets = new TClonesArray("AliTRDtrackletGTU", 6); |
60 | for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++) | |
61 | new ((*fTracklets)[iTracklet]) AliTRDtrackletGTU(); | |
62 | // fTracklets->BypassStreamer(kFALSE); | |
63 | } | |
64 | ||
dd09a2e2 | 65 | AliTRDtrackGTU::AliTRDtrackGTU(const AliTRDtrackGTU &rhs) : |
66 | TObject(), | |
67 | fStack(rhs.fStack), | |
68 | fSector(rhs.fSector), | |
69 | fPID(rhs.fPID), | |
70 | fTracklets(0x0), | |
71 | fTrackletMask(rhs.fTrackletMask), | |
72 | fNTracklets(rhs.fNTracklets), | |
73 | fRefLayerIdx(rhs.fRefLayerIdx), | |
74 | fZChannel(rhs.fZChannel), | |
75 | fZSubChannel(rhs.fZSubChannel), | |
76 | fA(rhs.fA), | |
77 | fB(rhs.fB), | |
78 | fC(rhs.fC), | |
79 | fLabel(rhs.fLabel) | |
80 | { | |
81 | fTracklets = new TClonesArray("AliTRDtrackletGTU", 6); | |
82 | for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++) | |
83 | new ((*fTracklets)[iTracklet]) AliTRDtrackletGTU(*((AliTRDtrackletGTU*)(*(rhs.fTracklets))[iTracklet])); | |
84 | } | |
85 | ||
86 | AliTRDtrackGTU& AliTRDtrackGTU::operator=(const AliTRDtrackGTU &rhs) | |
87 | { | |
88 | if (&rhs != this) { | |
89 | TObject::operator=(rhs); | |
90 | fStack = rhs.fStack; | |
91 | fSector = rhs.fSector; | |
92 | fPID = rhs.fPID; | |
93 | fTrackletMask = rhs.fTrackletMask; | |
94 | fNTracklets = rhs.fNTracklets; | |
95 | fRefLayerIdx = rhs.fRefLayerIdx; | |
96 | fZChannel = rhs.fZChannel; | |
97 | fZSubChannel = rhs.fZSubChannel; | |
98 | fA = rhs.fA; | |
99 | fB = rhs.fB; | |
100 | fC = rhs.fC; | |
101 | fLabel = rhs.fLabel; | |
102 | for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++) | |
103 | new ((*fTracklets)[iTracklet]) AliTRDtrackletGTU(*((AliTRDtrackletGTU*)(*(rhs.fTracklets))[iTracklet])); | |
104 | } | |
105 | ||
106 | return *this; | |
107 | } | |
108 | ||
52c19022 | 109 | AliTRDtrackGTU::~AliTRDtrackGTU() |
110 | { | |
4cc89512 | 111 | // dtor |
112 | ||
52c19022 | 113 | fTracklets->Delete(); |
114 | delete fTracklets; | |
115 | } | |
116 | ||
5f006bd7 | 117 | void AliTRDtrackGTU::AddTracklet(const AliTRDtrackletGTU * const tracklet, Int_t layer) |
52c19022 | 118 | { |
4cc89512 | 119 | // add a tracklet to this track |
120 | ||
52c19022 | 121 | if ( (fTrackletMask & (1 << layer)) != 0 ) { |
122 | AliError(Form("Only one tracklet per layer (%i) possible! Mask: 0x%02x", layer, fTrackletMask)); | |
123 | return; | |
124 | } | |
125 | ||
126 | new ((*fTracklets)[layer]) AliTRDtrackletGTU(*tracklet); | |
127 | fNTracklets++; | |
128 | fTrackletMask |= (1 << layer); | |
129 | } | |
130 | ||
44eafcf2 | 131 | AliTRDtrackletGTU* AliTRDtrackGTU::GetTracklet(Int_t layer) const |
52c19022 | 132 | { |
4cc89512 | 133 | // get a pointer to the tracklet in the layer specified |
134 | ||
80f93426 | 135 | if (IsTrackletInLayer(layer)) |
136 | return ((AliTRDtrackletGTU*) (*fTracklets)[layer]); | |
5f006bd7 | 137 | else |
80f93426 | 138 | return 0x0; |
52c19022 | 139 | } |
140 | ||
141 | Int_t AliTRDtrackGTU::GetNTracklets() const | |
142 | { | |
4cc89512 | 143 | // returns the number of tracklets in this track |
144 | ||
52c19022 | 145 | return fNTracklets; |
146 | } | |
147 | ||
5f006bd7 | 148 | Bool_t AliTRDtrackGTU::IsTrackletInLayer(Int_t layer) const |
52c19022 | 149 | { |
4cc89512 | 150 | // checks for a tracklet in the given layer |
151 | ||
52c19022 | 152 | if ( (GetTrackletMask() & (1 << layer)) != 0) |
153 | return kTRUE; | |
5f006bd7 | 154 | else |
52c19022 | 155 | return kFALSE; |
156 | } | |
157 | ||
5f006bd7 | 158 | void AliTRDtrackGTU::SetFitParams(Float_t a, Float_t b, Float_t c) |
52c19022 | 159 | { |
4cc89512 | 160 | // set the fit parameters |
161 | ||
5f006bd7 | 162 | fA = a; |
52c19022 | 163 | fB = b; |
164 | fC = c; | |
165 | } | |
166 | ||
5f006bd7 | 167 | Int_t AliTRDtrackGTU::GetZSubChannel() |
52c19022 | 168 | { |
4cc89512 | 169 | // returns the z-subchannel |
170 | ||
52c19022 | 171 | if (fZSubChannel < 0) { |
172 | for (Int_t layer = 0; layer < AliTRDgtuParam::GetNLayers(); layer++) | |
173 | { | |
174 | if (IsTrackletInLayer(layer)) | |
175 | fZSubChannel = ((AliTRDtrackletGTU*) (*fTracklets)[layer])->GetSubChannel(GetZChannel()); | |
176 | } | |
177 | } | |
178 | return fZSubChannel; | |
179 | } | |
180 | ||
5f006bd7 | 181 | Int_t AliTRDtrackGTU::GetYapprox() |
52c19022 | 182 | { |
d2c8b010 | 183 | // returns an approximated y-position for the track |
184 | // taken from the projected y-position of the tracklet in the reference layer | |
185 | // in which the track was found | |
4cc89512 | 186 | |
d2c8b010 | 187 | if ((fRefLayerIdx > -1) && (fRefLayerIdx < AliTRDgtuParam::GetNRefLayers())) |
188 | return ((AliTRDtrackletGTU*) (*fTracklets)[AliTRDgtuParam::GetRefLayer(fRefLayerIdx)])->GetYProj(); | |
189 | else | |
190 | return 0; | |
52c19022 | 191 | } |
192 | ||
193 | AliESDTrdTrack* AliTRDtrackGTU::CreateTrdTrack() const | |
194 | { | |
44eafcf2 | 195 | // creates an AliESDTrdTrack to be added to the ESD |
196 | ||
197 | AliESDTrdTrack *trk = new AliESDTrdTrack(); | |
198 | trk->SetA((Int_t) fA); | |
199 | trk->SetLayerMask(fTrackletMask); | |
200 | trk->SetPID(fPID); | |
201 | trk->SetB((Int_t) fB); | |
202 | trk->SetStack(fStack); | |
203 | trk->SetSector(fSector); | |
204 | if (fLabel >= 0) | |
205 | trk->SetLabel(fLabel); | |
206 | ||
207 | for (Int_t iLayer = 0; iLayer < AliTRDgtuParam::GetNLayers(); iLayer++) { | |
208 | AliTRDtrackletGTU *trklGTU = GetTracklet(iLayer); | |
209 | if (trklGTU) { | |
a10c6981 | 210 | trk->SetTrackletIndex(trklGTU->GetIndex(), iLayer); |
44eafcf2 | 211 | AliESDTrdTracklet *trkl = trklGTU->GetTrackletESD(); |
212 | if (trkl) | |
213 | trk->AddTrackletReference(trkl, iLayer); | |
214 | } | |
215 | } | |
52cd0cc0 | 216 | |
44eafcf2 | 217 | return trk; |
52c19022 | 218 | } |
4cc89512 | 219 | |
5f006bd7 | 220 | Bool_t AliTRDtrackGTU::CookLabel() |
4cc89512 | 221 | { |
222 | TH1F *h = new TH1F("trkref", "trkref", 100000, 0, 100000); | |
223 | for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++) { | |
80f93426 | 224 | if (!IsTrackletInLayer(iTracklet)) |
225 | continue; | |
4cc89512 | 226 | h->Fill( ((AliTRDtrackletGTU*) (*fTracklets)[iTracklet])->GetLabel()); |
227 | } | |
228 | if (h->GetEntries() > 0) | |
80f93426 | 229 | fLabel = h->GetMaximumBin() - 1; |
5f006bd7 | 230 | else |
4cc89512 | 231 | fLabel = -1; |
232 | delete h; | |
233 | return (fLabel >= 0); | |
234 | } |