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a9e2aefa | 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 | ||
88cb7938 | 16 | /* $Id$ */ |
a9e2aefa | 17 | |
d19b6003 | 18 | // ------------------------ |
19 | // Class AliMUONHitForRec | |
20 | // ------------------------ | |
a9e2aefa | 21 | // Hit for reconstruction in ALICE dimuon spectrometer |
d19b6003 | 22 | // Author: J. Gosset |
a9e2aefa | 23 | |
29fc2c86 | 24 | #include "AliTrackReference.h" |
a9e2aefa | 25 | #include "AliMUONHitForRec.h" |
a9e2aefa | 26 | #include "AliMUONRawCluster.h" |
27 | #include "AliMUONHit.h" | |
29fc2c86 | 28 | #include "AliMUONConstants.h" |
8c343c7c | 29 | #include "AliLog.h" |
c8245e7e | 30 | #include "Riostream.h" |
a9e2aefa | 31 | |
32 | ClassImp(AliMUONHitForRec) // Class implementation in ROOT context | |
33 | ||
34 | //__________________________________________________________________________ | |
30178c30 | 35 | AliMUONHitForRec::AliMUONHitForRec() |
54d7ba50 | 36 | : TObject(), |
37 | fBendingCoor(0.), | |
38 | fNonBendingCoor(0.), | |
39 | fZ(0.), | |
40 | fBendingReso2(0.), | |
41 | fNonBendingReso2(0.), | |
42 | fChamberNumber(0), | |
43 | fDetElemId(0), | |
44 | fHitNumber(0), | |
45 | fTTRTrack(0), | |
46 | fTrackRefSignal(0), | |
47 | fIndexOfFirstSegment(0), | |
48 | fNSegments(0), | |
54d7ba50 | 49 | fNTrackHits(0) |
30178c30 | 50 | { |
d19b6003 | 51 | /// Default Constructor |
30178c30 | 52 | |
30178c30 | 53 | } |
54 | ||
55 | //__________________________________________________________________________ | |
29fc2c86 | 56 | AliMUONHitForRec::AliMUONHitForRec(AliTrackReference* theGhit) |
54d7ba50 | 57 | : TObject(), |
58 | fBendingCoor(theGhit->Y()), | |
59 | fNonBendingCoor(theGhit->X()), | |
60 | fZ(theGhit->Z()), | |
61 | fBendingReso2(0.), | |
62 | fNonBendingReso2(0.), | |
63 | fChamberNumber(0), | |
64 | fDetElemId(0), | |
65 | fHitNumber(0), | |
66 | fTTRTrack(0), | |
67 | fTrackRefSignal(0), | |
68 | fIndexOfFirstSegment(-1), | |
69 | fNSegments(0), | |
54d7ba50 | 70 | fNTrackHits(0) |
a9e2aefa | 71 | { |
d19b6003 | 72 | /// Constructor for AliMUONHitForRec from a track ref. hit. |
73 | /// Fills the bending, non bending, and Z coordinates, | |
74 | /// which are taken from the coordinates of the track ref. hit, | |
75 | /// the track number (track ref. and not TH), | |
76 | /// and the chamber number (0...). | |
77 | ||
30178c30 | 78 | // fTrack = theGhit->fTrack; ????????? |
30d3ea8a | 79 | fDetElemId = theGhit->UserId(); |
80 | if (fDetElemId) fChamberNumber = fDetElemId / 100 - 1; | |
81 | else fChamberNumber = AliMUONConstants::ChamberNumber(fZ); | |
a9e2aefa | 82 | // other fields will be updated in |
54d7ba50 | 83 | // AliMUONEventReconstructor::NewHitForRecFromTrackRef |
a9e2aefa | 84 | return; |
85 | } | |
86 | ||
87 | // //__________________________________________________________________________ | |
88 | // AliMUONHitForRec::AliMUONHitForRec(AliMUONReconstHit* CathCorrel) | |
89 | // { | |
90 | // // Constructor for AliMUONHitForRec from a (cathode correlated) raw cluster. | |
91 | // // Fills the bending and non bending coordinates. | |
92 | // // Only the first correlation is taken into account. | |
93 | // // The bending coordinate is taken from the first cathode. | |
94 | // // The non bending coordinate is taken | |
95 | // // from the second cathode if it exists, | |
96 | // // from the first one otherwise. | |
97 | // fBendingCoor = CathCorrel->fY[3]; | |
98 | // if (CathCorrel->fCorrelIndex[0] >= 0) fNonBendingCoor = CathCorrel->fX[0]; | |
99 | // else fNonBendingCoor = CathCorrel->fX[3]; | |
100 | // return; | |
101 | // } | |
102 | ||
103 | //__________________________________________________________________________ | |
30178c30 | 104 | AliMUONHitForRec::AliMUONHitForRec(AliMUONRawCluster* theRawCluster) |
54d7ba50 | 105 | : TObject(), |
106 | fBendingCoor(theRawCluster->GetY(0)), | |
107 | fNonBendingCoor(theRawCluster->GetX(0)), | |
108 | fZ(0.), | |
109 | fBendingReso2(0.), | |
110 | fNonBendingReso2(0.), | |
111 | fChamberNumber(0), | |
112 | fDetElemId(theRawCluster->GetDetElemId()), | |
113 | fHitNumber(0), | |
114 | fTTRTrack(-1), | |
115 | fTrackRefSignal(-1), | |
116 | fIndexOfFirstSegment(-1), | |
117 | fNSegments(0), | |
54d7ba50 | 118 | fNTrackHits(0) |
a9e2aefa | 119 | { |
d19b6003 | 120 | /// Constructor for AliMUONHitForRec from a raw cluster. |
121 | /// Fills the bending and non bending coordinates. | |
122 | ||
a9e2aefa | 123 | // other fields will be updated in |
124 | // AliMUONEventReconstructor::AddHitsForRecFromRawClusters, | |
a9e2aefa | 125 | return; |
126 | } | |
127 | ||
30178c30 | 128 | //__________________________________________________________________________ |
b8dc484b | 129 | AliMUONHitForRec::AliMUONHitForRec (const AliMUONHitForRec& theMUONHitForRec) |
54d7ba50 | 130 | : TObject(theMUONHitForRec), |
131 | fBendingCoor(theMUONHitForRec.fBendingCoor), | |
132 | fNonBendingCoor(theMUONHitForRec.fNonBendingCoor), | |
133 | fZ(theMUONHitForRec.fZ), | |
134 | fBendingReso2(theMUONHitForRec.fBendingReso2), | |
135 | fNonBendingReso2(theMUONHitForRec.fNonBendingReso2), | |
136 | fChamberNumber(theMUONHitForRec.fChamberNumber), | |
137 | fDetElemId(theMUONHitForRec.fDetElemId), | |
138 | fHitNumber(theMUONHitForRec.fHitNumber), | |
139 | fTTRTrack(theMUONHitForRec.fTTRTrack), | |
140 | fTrackRefSignal(theMUONHitForRec.fTrackRefSignal), | |
141 | fIndexOfFirstSegment(theMUONHitForRec.fIndexOfFirstSegment), | |
142 | fNSegments(theMUONHitForRec.fNSegments), | |
54d7ba50 | 143 | fNTrackHits(theMUONHitForRec.fNTrackHits) |
a9e2aefa | 144 | { |
d19b6003 | 145 | /// Copy constructor |
146 | ||
a9e2aefa | 147 | } |
148 | ||
30178c30 | 149 | //__________________________________________________________________________ |
b8dc484b | 150 | AliMUONHitForRec & AliMUONHitForRec::operator=(const AliMUONHitForRec& theMUONHitForRec) |
a9e2aefa | 151 | { |
d19b6003 | 152 | /// Assignment operator |
153 | ||
b8dc484b | 154 | fBendingCoor = theMUONHitForRec.fBendingCoor; |
155 | fNonBendingCoor = theMUONHitForRec.fNonBendingCoor; | |
156 | fZ = theMUONHitForRec.fZ; | |
157 | fBendingReso2 = theMUONHitForRec.fBendingReso2; | |
158 | fNonBendingReso2 = theMUONHitForRec.fNonBendingReso2; | |
159 | fChamberNumber = theMUONHitForRec.fChamberNumber; | |
38804330 | 160 | fDetElemId = theMUONHitForRec.fDetElemId; |
b8dc484b | 161 | fHitNumber = theMUONHitForRec.fHitNumber; |
29fc2c86 | 162 | fTTRTrack = theMUONHitForRec.fTTRTrack; |
163 | fTrackRefSignal = theMUONHitForRec.fTrackRefSignal; | |
b8dc484b | 164 | fIndexOfFirstSegment = theMUONHitForRec.fIndexOfFirstSegment; |
165 | fNSegments = theMUONHitForRec.fNSegments; | |
b8dc484b | 166 | fNTrackHits = theMUONHitForRec.fNTrackHits; |
b8dc484b | 167 | return *this; |
a9e2aefa | 168 | } |
a9e2aefa | 169 | //__________________________________________________________________________ |
83dbc640 | 170 | /*AZ |
2a941f4e | 171 | Int_t AliMUONHitForRec::Compare(const TObject* Hit) const |
a9e2aefa | 172 | { |
173 | // "Compare" function to sort with increasing chamber number. | |
174 | // Returns -1 (0, +1) if ChamberNumber of current HitForRec | |
175 | // is smaller than (equal to, larger than) ChamberNumber of Hit | |
176 | if (fChamberNumber < ((AliMUONHitForRec*)Hit)->fChamberNumber) return(-1); | |
177 | else if (fChamberNumber == ((AliMUONHitForRec*)Hit)->fChamberNumber) return( 0); | |
178 | else return(+1); | |
179 | } | |
83dbc640 | 180 | */ |
181 | //__________________________________________________________________________ | |
182 | Int_t AliMUONHitForRec::Compare(const TObject* Hit) const | |
183 | { | |
d19b6003 | 184 | /// "Compare" function to sort with decreasing Z-coordinate (spectro. MUON z<0). |
185 | /// Returns 1 (0, -1) if Z-coordinate of current HitForRec | |
186 | /// is smaller than (equal to, larger than) Z-coordinate of Hit | |
187 | ||
5b64e914 | 188 | if (fZ < ((AliMUONHitForRec*)Hit)->fZ) return(1); |
83dbc640 | 189 | else if (fZ == ((AliMUONHitForRec*)Hit)->fZ) return( 0); |
5b64e914 | 190 | else return(-1); |
83dbc640 | 191 | } |
a9e2aefa | 192 | |
193 | //__________________________________________________________________________ | |
30178c30 | 194 | Double_t AliMUONHitForRec::NormalizedChi2WithHitForRec(AliMUONHitForRec* hitForRec, Double_t Sigma2Cut) const |
a9e2aefa | 195 | { |
d19b6003 | 196 | /// Calculate the normalized Chi2 between the current hitForRec (this) |
197 | /// and the hitForRec pointed to by "hitForRec", | |
198 | /// i.e. the square deviations between the coordinates, | |
199 | /// in both the bending and the non bending plane, | |
200 | /// divided by the variance of the same quantities and by "Sigma2Cut". | |
201 | /// Returns 3 if none of the 2 quantities is OK, | |
202 | /// something smaller than or equal to 2 otherwise. | |
203 | /// Would it be more correct to use a real chi square | |
204 | /// including the non diagonal term ???? | |
205 | ||
a9e2aefa | 206 | Double_t chi2, chi2Max, diff, normDiff; |
207 | chi2 = 0.0; | |
208 | chi2Max = 3.0; | |
209 | // coordinate in bending plane | |
30178c30 | 210 | diff = fBendingCoor - hitForRec->fBendingCoor; |
a9e2aefa | 211 | normDiff = diff * diff / |
30178c30 | 212 | (fBendingReso2 + hitForRec->fBendingReso2) / Sigma2Cut; |
a9e2aefa | 213 | if (normDiff > 1.0) return chi2Max; |
214 | chi2 = chi2 + normDiff; | |
215 | // coordinate in non bending plane | |
30178c30 | 216 | diff = fNonBendingCoor - hitForRec->fNonBendingCoor; |
a9e2aefa | 217 | normDiff = diff * diff / |
30178c30 | 218 | (fNonBendingReso2 + hitForRec->fNonBendingReso2) / Sigma2Cut; |
a9e2aefa | 219 | if (normDiff > 1.0) return chi2Max; |
220 | chi2 = chi2 + normDiff; | |
221 | return chi2; | |
222 | } | |
c8245e7e | 223 | |
224 | //______________________________________________________________________________ | |
225 | void | |
226 | AliMUONHitForRec::Print(Option_t* /*opt*/) const | |
227 | { | |
9c4d2d12 | 228 | /// Printing |
229 | ||
c8245e7e | 230 | cout << "<AliMUONHitForRec> Coordinates (B,NB,Z) = (" |
231 | << setw(8) << setprecision(5) << fBendingCoor | |
232 | << "," << setw(8) << setprecision(5) << fNonBendingCoor << "," | |
233 | << setw(8) << setprecision(5) << fZ << ") " | |
234 | << "Reso (B,NB)=(" << setw(8) << setprecision(5) << TMath::Sqrt(fBendingReso2) | |
235 | << "," << setw(8) << setprecision(5) << TMath::Sqrt(fNonBendingReso2) | |
236 | << ") " | |
237 | << "Number " << setw(3) << fHitNumber | |
238 | << " within chamber " << setw(3) <<fChamberNumber | |
239 | << " DE " << setw(4) << fDetElemId | |
240 | << endl; | |
241 | } |