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0ee00e25 | 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 | // | |
52cd0cc0 | 18 | // ESD format for the TRD tracks calculated in the |
19 | // Global Tracking Unit, used for the TRD L1 trigger | |
20 | // | |
21 | // Author: Jochen Klein <jochen.klein@cern.ch> | |
0ee00e25 | 22 | // |
23 | /////////////////////////////////////////////////////////////////////////////// | |
24 | ||
3d1168d4 | 25 | #include "TMath.h" |
26 | ||
0ee00e25 | 27 | #include "AliESDTrdTrack.h" |
52cd0cc0 | 28 | #include "AliESDTrdTracklet.h" |
0ee00e25 | 29 | |
30 | ClassImp(AliESDTrdTrack) | |
31 | ||
32 | //_____________________________________________________________________________ | |
33 | AliESDTrdTrack::AliESDTrdTrack(): | |
3cd717db | 34 | AliVTrdTrack(), |
52cd0cc0 | 35 | fSector(-1), |
36 | fStack(-1), | |
37 | fA(0), | |
38 | fB(0), | |
39 | fC(0), | |
40 | fY(0), | |
0ee00e25 | 41 | fPID(0), |
52cd0cc0 | 42 | fLayerMask(0), |
43 | fFlags(0), | |
92115562 | 44 | fFlagsTiming(0), |
52cd0cc0 | 45 | fReserved(0), |
f01d9069 | 46 | fTrackMatch(), |
52cd0cc0 | 47 | fLabel(-1) |
0ee00e25 | 48 | { |
0ee00e25 | 49 | // |
50 | // Default constructor | |
748a7a1b | 51 | for (int i=fgkNlayers;i--;) fTrackletIndex[i] = 0; |
0ee00e25 | 52 | // |
53 | ||
54 | } | |
55 | ||
0ee00e25 | 56 | AliESDTrdTrack::AliESDTrdTrack(const AliESDTrdTrack& track): |
3cd717db | 57 | AliVTrdTrack(track), |
52cd0cc0 | 58 | fSector(track.fSector), |
59 | fStack(track.fStack), | |
60 | fA(track.fA), | |
61 | fB(track.fB), | |
62 | fC(track.fC), | |
63 | fY(track.fY), | |
0ee00e25 | 64 | fPID(track.fPID), |
52cd0cc0 | 65 | fLayerMask(track.fLayerMask), |
66 | fFlags(track.fFlags), | |
92115562 | 67 | fFlagsTiming(track.fFlagsTiming), |
52cd0cc0 | 68 | fReserved(track.fReserved), |
f01d9069 | 69 | fTrackMatch(track.fTrackMatch), |
52cd0cc0 | 70 | fLabel(track.fLabel) |
0ee00e25 | 71 | { |
0ee00e25 | 72 | // |
73 | // Copy contructor | |
74 | // | |
75 | ||
52cd0cc0 | 76 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { |
77 | fTrackletIndex[iLayer] = track.fTrackletIndex[iLayer]; | |
78 | ||
79 | if (track.fTrackletRefs[iLayer].GetObject()) | |
80 | fTrackletRefs[iLayer] = track.fTrackletRefs[iLayer]; | |
81 | } | |
0ee00e25 | 82 | } |
83 | ||
0ee00e25 | 84 | AliESDTrdTrack& AliESDTrdTrack::operator=(const AliESDTrdTrack& track) |
85 | { | |
52cd0cc0 | 86 | // |
87 | // assignment operator | |
0ee00e25 | 88 | // |
89 | ||
90 | if (this == &track) | |
91 | return *this; | |
3cd717db | 92 | AliVTrdTrack::operator=(track); |
52cd0cc0 | 93 | fSector = track.fSector; |
f01d9069 | 94 | fStack = track.fStack; |
95 | fA = track.fA; | |
96 | fB = track.fB; | |
97 | fC = track.fC; | |
98 | fPID = track.fPID; | |
99 | fLayerMask = track.fLayerMask; | |
100 | fFlags = track.fFlags; | |
101 | fFlagsTiming = track.fFlagsTiming; | |
102 | fReserved = track.fReserved; | |
9aa7ebff | 103 | fTrackMatch = track.fTrackMatch; |
f01d9069 | 104 | fLabel = track.fLabel; |
52cd0cc0 | 105 | for (Int_t iLayer = 0; iLayer < 6; iLayer++) { |
106 | fTrackletIndex[iLayer] = track.fTrackletIndex[iLayer]; | |
107 | fTrackletRefs[iLayer] = track.fTrackletRefs[iLayer]; | |
108 | } | |
0ee00e25 | 109 | |
110 | return *this; | |
0ee00e25 | 111 | } |
112 | ||
52cd0cc0 | 113 | void AliESDTrdTrack::Copy(TObject& obj) const |
114 | { | |
115 | // this overwrites the virtual TOBject::Copy() | |
732a24fe | 116 | // to allow run time copying without casting |
117 | // in AliESDEvent | |
118 | ||
119 | if(this==&obj)return; | |
120 | AliESDTrdTrack *robj = dynamic_cast<AliESDTrdTrack*>(&obj); | |
52cd0cc0 | 121 | if(!robj)return; // not an aliesdtrdtrack |
732a24fe | 122 | *robj = *this; |
123 | } | |
52cd0cc0 | 124 | |
125 | ULong64_t AliESDTrdTrack::GetTrackWord(Int_t /* rev */) const | |
126 | { | |
127 | // return track word representation as in raw data | |
128 | // MSB always 1 | |
129 | ||
130 | ULong64_t trackWord = 1; | |
131 | AppendBits(trackWord, 1, 0); | |
132 | AppendBits(trackWord, 6, fLayerMask); | |
133 | AppendBits(trackWord, 18, fA); | |
134 | AppendBits(trackWord, 18, fB); | |
135 | AppendBits(trackWord, 12, fC); | |
136 | AppendBits(trackWord, 8, fPID); | |
137 | return trackWord; | |
138 | } | |
139 | ||
140 | ULong64_t AliESDTrdTrack::GetExtendedTrackWord(Int_t /* rev */) const | |
141 | { | |
142 | // return extended track word representation as in raw data | |
143 | // MSB always 0 | |
144 | ||
145 | ULong64_t trackWord = 0; | |
146 | AppendBits(trackWord, 11, fFlags); | |
92115562 | 147 | AppendBits(trackWord, 1, fFlagsTiming); |
148 | AppendBits(trackWord, 2, fReserved); | |
52cd0cc0 | 149 | AppendBits(trackWord, 13, fY); |
150 | AppendBits(trackWord, 6, fTrackletIndex[5]); | |
151 | AppendBits(trackWord, 6, fTrackletIndex[4]); | |
152 | AppendBits(trackWord, 6, fTrackletIndex[3]); | |
153 | AppendBits(trackWord, 6, fTrackletIndex[2]); | |
154 | AppendBits(trackWord, 6, fTrackletIndex[1]); | |
155 | AppendBits(trackWord, 6, fTrackletIndex[0]); | |
156 | return trackWord; | |
157 | } | |
158 | ||
159 | Int_t AliESDTrdTrack::GetPt() const | |
160 | { | |
161 | // calculate pt from a as done in hardware | |
162 | ||
163 | const Int_t maskIdLut[64] = { | |
164 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, | |
165 | -1, -1, -1, -1, -1, -1, -1, 1, -1, -1, -1, 2, -1, 3, 4, 5, | |
166 | -1, -1, -1, -1, -1, -1, -1, 6, -1, -1, -1, 7, -1, 8, 9, 10, | |
167 | -1, -1, -1, 11, -1, 12, 13, 14, -1, 15, 16, 17, 18, 19, 20, 21 | |
168 | }; | |
169 | ||
170 | const Int_t c1Lut[32] = { | |
171 | -2371, -2474, -2474, -2474, -2563, -2448, -2578, -2578, | |
172 | -2578, -2670, -2557, -2578, -2578, -2670, -2557, -2578, | |
173 | -2670, -2557, -2763, -2557, -2644, -2523, -1, -1, | |
174 | -1, -1, -1, -1, -1, -1, -1, -1 | |
175 | }; | |
176 | ||
177 | if (this->GetA() != 0) { | |
178 | Int_t layerMaskId = maskIdLut[this->GetLayerMask()]; | |
179 | Int_t c1 = c1Lut[layerMaskId]; | |
180 | Int_t c1Ext = c1 << 8; | |
e6d1f6ad | 181 | Int_t ptRawStage4 = c1Ext / ((this->GetA() >> 2) != 0 ? (this->GetA() >> 2) : 1 ); |
52cd0cc0 | 182 | Int_t ptRawComb4 = ptRawStage4; |
183 | Int_t ptExtComb4 = (ptRawComb4 > 0) ? ptRawComb4 + 33 : ptRawComb4 - 30; | |
184 | ||
185 | return -ptExtComb4/2; | |
186 | } | |
187 | else | |
188 | return 0; | |
189 | } | |
3d1168d4 | 190 | |
191 | Int_t AliESDTrdTrack::Compare(const TObject* obj) const | |
192 | { | |
193 | if (this == obj) | |
194 | return 0; | |
195 | else if (TMath::Abs(Pt()) < TMath::Abs(((AliESDTrdTrack*)(obj))->Pt())) | |
196 | return 1; | |
197 | else | |
198 | return -1; | |
199 | } |