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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" | |
28 | ||
29 | #include "AliLog.h" | |
30 | #include "AliTRDgtuParam.h" | |
31 | #include "AliTRDtrackGTU.h" | |
32 | #include "AliTRDtrackletGTU.h" | |
33 | #include "AliESDTrdTrack.h" | |
34 | ||
35 | ClassImp(AliTRDtrackGTU) | |
36 | ||
37 | AliTRDtrackGTU::AliTRDtrackGTU() : | |
38 | TObject(), | |
39 | fStack(-1), | |
40 | fSector(-1), | |
41 | fPt(0), | |
42 | fPID(0), | |
43 | fTracklets(0x0), | |
44 | fTrackletMask(0), | |
45 | fNTracklets(0), | |
46 | fRefLayerIdx(-1), | |
47 | fZChannel(-1), | |
48 | fZSubChannel(-1), | |
49 | fA(0), | |
50 | fB(0), | |
51 | fC(0) | |
52 | { | |
53 | fTracklets = new TClonesArray("AliTRDtrackletGTU", 6); | |
54 | for (Int_t iTracklet = 0; iTracklet < 6; iTracklet++) | |
55 | new ((*fTracklets)[iTracklet]) AliTRDtrackletGTU(); | |
56 | // fTracklets->BypassStreamer(kFALSE); | |
57 | } | |
58 | ||
59 | AliTRDtrackGTU::~AliTRDtrackGTU() | |
60 | { | |
61 | fTracklets->Delete(); | |
62 | delete fTracklets; | |
63 | } | |
64 | ||
65 | void AliTRDtrackGTU::AddTracklet(AliTRDtrackletGTU *tracklet, Int_t layer) | |
66 | { | |
67 | if ( (fTrackletMask & (1 << layer)) != 0 ) { | |
68 | AliError(Form("Only one tracklet per layer (%i) possible! Mask: 0x%02x", layer, fTrackletMask)); | |
69 | return; | |
70 | } | |
71 | ||
72 | new ((*fTracklets)[layer]) AliTRDtrackletGTU(*tracklet); | |
73 | fNTracklets++; | |
74 | fTrackletMask |= (1 << layer); | |
75 | } | |
76 | ||
77 | AliTRDtrackletGTU* AliTRDtrackGTU::GetTracklet(Int_t layer) | |
78 | { | |
79 | return ((AliTRDtrackletGTU*) (*fTracklets)[layer]); | |
80 | } | |
81 | ||
82 | Int_t AliTRDtrackGTU::GetNTracklets() const | |
83 | { | |
84 | return fNTracklets; | |
85 | } | |
86 | ||
87 | Bool_t AliTRDtrackGTU::IsTrackletInLayer(Int_t layer) const | |
88 | { | |
89 | if ( (GetTrackletMask() & (1 << layer)) != 0) | |
90 | return kTRUE; | |
91 | else | |
92 | return kFALSE; | |
93 | } | |
94 | ||
95 | void AliTRDtrackGTU::SetFitParams(Float_t a, Float_t b, Float_t c) | |
96 | { | |
97 | fA = a; | |
98 | fB = b; | |
99 | fC = c; | |
100 | } | |
101 | ||
102 | Int_t AliTRDtrackGTU::GetZSubChannel() | |
103 | { | |
104 | if (fZSubChannel < 0) { | |
105 | for (Int_t layer = 0; layer < AliTRDgtuParam::GetNLayers(); layer++) | |
106 | { | |
107 | if (IsTrackletInLayer(layer)) | |
108 | fZSubChannel = ((AliTRDtrackletGTU*) (*fTracklets)[layer])->GetSubChannel(GetZChannel()); | |
109 | } | |
110 | } | |
111 | return fZSubChannel; | |
112 | } | |
113 | ||
114 | Int_t AliTRDtrackGTU::GetYapprox() | |
115 | { | |
116 | for (Int_t layer = 0; layer < AliTRDgtuParam::GetNLayers(); layer++) | |
117 | { | |
118 | if (IsTrackletInLayer(layer)) | |
119 | return ((AliTRDtrackletGTU*) (*fTracklets)[layer])->GetYProj(); | |
120 | } | |
121 | return 0; | |
122 | } | |
123 | ||
124 | AliESDTrdTrack* AliTRDtrackGTU::CreateTrdTrack() const | |
125 | { | |
126 | AliESDTrdTrack *trk = new AliESDTrdTrack(); | |
127 | trk->SetPt(1./128. * fPt); | |
128 | trk->SetPID(fPID); | |
129 | trk->SetDetector(fSector * 30 + fStack * 6); | |
130 | return trk; | |
131 | } |