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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" |
29fc2c86 | 27 | #include "AliMUONConstants.h" |
8c343c7c | 28 | #include "AliLog.h" |
c8245e7e | 29 | #include "Riostream.h" |
a9e2aefa | 30 | |
7945aae7 | 31 | /// \cond CLASSIMP |
a9e2aefa | 32 | ClassImp(AliMUONHitForRec) // Class implementation in ROOT context |
7945aae7 | 33 | /// \endcond |
a9e2aefa | 34 | |
35 | //__________________________________________________________________________ | |
30178c30 | 36 | AliMUONHitForRec::AliMUONHitForRec() |
54d7ba50 | 37 | : TObject(), |
38 | fBendingCoor(0.), | |
39 | fNonBendingCoor(0.), | |
40 | fZ(0.), | |
41 | fBendingReso2(0.), | |
42 | fNonBendingReso2(0.), | |
43 | fChamberNumber(0), | |
44 | fDetElemId(0), | |
45 | fHitNumber(0), | |
46 | fTTRTrack(0), | |
47 | fTrackRefSignal(0), | |
54d7ba50 | 48 | fNTrackHits(0) |
30178c30 | 49 | { |
d19b6003 | 50 | /// Default Constructor |
30178c30 | 51 | |
30178c30 | 52 | } |
53 | ||
54 | //__________________________________________________________________________ | |
29fc2c86 | 55 | AliMUONHitForRec::AliMUONHitForRec(AliTrackReference* theGhit) |
54d7ba50 | 56 | : TObject(), |
57 | fBendingCoor(theGhit->Y()), | |
58 | fNonBendingCoor(theGhit->X()), | |
59 | fZ(theGhit->Z()), | |
60 | fBendingReso2(0.), | |
61 | fNonBendingReso2(0.), | |
62 | fChamberNumber(0), | |
63 | fDetElemId(0), | |
64 | fHitNumber(0), | |
65 | fTTRTrack(0), | |
66 | fTrackRefSignal(0), | |
54d7ba50 | 67 | fNTrackHits(0) |
a9e2aefa | 68 | { |
d19b6003 | 69 | /// Constructor for AliMUONHitForRec from a track ref. hit. |
70 | /// Fills the bending, non bending, and Z coordinates, | |
71 | /// which are taken from the coordinates of the track ref. hit, | |
72 | /// the track number (track ref. and not TH), | |
73 | /// and the chamber number (0...). | |
74 | ||
30178c30 | 75 | // fTrack = theGhit->fTrack; ????????? |
30d3ea8a | 76 | fDetElemId = theGhit->UserId(); |
77 | if (fDetElemId) fChamberNumber = fDetElemId / 100 - 1; | |
78 | else fChamberNumber = AliMUONConstants::ChamberNumber(fZ); | |
a9e2aefa | 79 | // other fields will be updated in |
54d7ba50 | 80 | // AliMUONEventReconstructor::NewHitForRecFromTrackRef |
a9e2aefa | 81 | return; |
82 | } | |
83 | ||
84 | // //__________________________________________________________________________ | |
85 | // AliMUONHitForRec::AliMUONHitForRec(AliMUONReconstHit* CathCorrel) | |
86 | // { | |
87 | // // Constructor for AliMUONHitForRec from a (cathode correlated) raw cluster. | |
88 | // // Fills the bending and non bending coordinates. | |
89 | // // Only the first correlation is taken into account. | |
90 | // // The bending coordinate is taken from the first cathode. | |
91 | // // The non bending coordinate is taken | |
92 | // // from the second cathode if it exists, | |
93 | // // from the first one otherwise. | |
94 | // fBendingCoor = CathCorrel->fY[3]; | |
95 | // if (CathCorrel->fCorrelIndex[0] >= 0) fNonBendingCoor = CathCorrel->fX[0]; | |
96 | // else fNonBendingCoor = CathCorrel->fX[3]; | |
97 | // return; | |
98 | // } | |
99 | ||
100 | //__________________________________________________________________________ | |
30178c30 | 101 | AliMUONHitForRec::AliMUONHitForRec(AliMUONRawCluster* theRawCluster) |
54d7ba50 | 102 | : TObject(), |
103 | fBendingCoor(theRawCluster->GetY(0)), | |
104 | fNonBendingCoor(theRawCluster->GetX(0)), | |
105 | fZ(0.), | |
106 | fBendingReso2(0.), | |
107 | fNonBendingReso2(0.), | |
108 | fChamberNumber(0), | |
109 | fDetElemId(theRawCluster->GetDetElemId()), | |
110 | fHitNumber(0), | |
111 | fTTRTrack(-1), | |
112 | fTrackRefSignal(-1), | |
54d7ba50 | 113 | fNTrackHits(0) |
a9e2aefa | 114 | { |
d19b6003 | 115 | /// Constructor for AliMUONHitForRec from a raw cluster. |
116 | /// Fills the bending and non bending coordinates. | |
117 | ||
a9e2aefa | 118 | // other fields will be updated in |
119 | // AliMUONEventReconstructor::AddHitsForRecFromRawClusters, | |
a9e2aefa | 120 | return; |
121 | } | |
122 | ||
30178c30 | 123 | //__________________________________________________________________________ |
b8dc484b | 124 | AliMUONHitForRec::AliMUONHitForRec (const AliMUONHitForRec& theMUONHitForRec) |
54d7ba50 | 125 | : TObject(theMUONHitForRec), |
126 | fBendingCoor(theMUONHitForRec.fBendingCoor), | |
127 | fNonBendingCoor(theMUONHitForRec.fNonBendingCoor), | |
128 | fZ(theMUONHitForRec.fZ), | |
129 | fBendingReso2(theMUONHitForRec.fBendingReso2), | |
130 | fNonBendingReso2(theMUONHitForRec.fNonBendingReso2), | |
131 | fChamberNumber(theMUONHitForRec.fChamberNumber), | |
132 | fDetElemId(theMUONHitForRec.fDetElemId), | |
133 | fHitNumber(theMUONHitForRec.fHitNumber), | |
134 | fTTRTrack(theMUONHitForRec.fTTRTrack), | |
135 | fTrackRefSignal(theMUONHitForRec.fTrackRefSignal), | |
54d7ba50 | 136 | fNTrackHits(theMUONHitForRec.fNTrackHits) |
a9e2aefa | 137 | { |
d19b6003 | 138 | /// Copy constructor |
139 | ||
71a2d3aa | 140 | } |
141 | ||
142 | //__________________________________________________________________________ | |
143 | AliMUONHitForRec::~AliMUONHitForRec() | |
144 | { | |
145 | /// Destructor | |
a9e2aefa | 146 | } |
147 | ||
30178c30 | 148 | //__________________________________________________________________________ |
b8dc484b | 149 | AliMUONHitForRec & AliMUONHitForRec::operator=(const AliMUONHitForRec& theMUONHitForRec) |
a9e2aefa | 150 | { |
d19b6003 | 151 | /// Assignment operator |
152 | ||
b8dc484b | 153 | fBendingCoor = theMUONHitForRec.fBendingCoor; |
154 | fNonBendingCoor = theMUONHitForRec.fNonBendingCoor; | |
155 | fZ = theMUONHitForRec.fZ; | |
156 | fBendingReso2 = theMUONHitForRec.fBendingReso2; | |
157 | fNonBendingReso2 = theMUONHitForRec.fNonBendingReso2; | |
158 | fChamberNumber = theMUONHitForRec.fChamberNumber; | |
38804330 | 159 | fDetElemId = theMUONHitForRec.fDetElemId; |
b8dc484b | 160 | fHitNumber = theMUONHitForRec.fHitNumber; |
29fc2c86 | 161 | fTTRTrack = theMUONHitForRec.fTTRTrack; |
162 | fTrackRefSignal = theMUONHitForRec.fTrackRefSignal; | |
b8dc484b | 163 | fNTrackHits = theMUONHitForRec.fNTrackHits; |
b8dc484b | 164 | return *this; |
a9e2aefa | 165 | } |
a9e2aefa | 166 | //__________________________________________________________________________ |
83dbc640 | 167 | /*AZ |
2a941f4e | 168 | Int_t AliMUONHitForRec::Compare(const TObject* Hit) const |
a9e2aefa | 169 | { |
170 | // "Compare" function to sort with increasing chamber number. | |
171 | // Returns -1 (0, +1) if ChamberNumber of current HitForRec | |
172 | // is smaller than (equal to, larger than) ChamberNumber of Hit | |
173 | if (fChamberNumber < ((AliMUONHitForRec*)Hit)->fChamberNumber) return(-1); | |
174 | else if (fChamberNumber == ((AliMUONHitForRec*)Hit)->fChamberNumber) return( 0); | |
175 | else return(+1); | |
176 | } | |
83dbc640 | 177 | */ |
178 | //__________________________________________________________________________ | |
179 | Int_t AliMUONHitForRec::Compare(const TObject* Hit) const | |
180 | { | |
d19b6003 | 181 | /// "Compare" function to sort with decreasing Z-coordinate (spectro. MUON z<0). |
182 | /// Returns 1 (0, -1) if Z-coordinate of current HitForRec | |
183 | /// is smaller than (equal to, larger than) Z-coordinate of Hit | |
184 | ||
5b64e914 | 185 | if (fZ < ((AliMUONHitForRec*)Hit)->fZ) return(1); |
83dbc640 | 186 | else if (fZ == ((AliMUONHitForRec*)Hit)->fZ) return( 0); |
5b64e914 | 187 | else return(-1); |
83dbc640 | 188 | } |
a9e2aefa | 189 | |
190 | //__________________________________________________________________________ | |
30178c30 | 191 | Double_t AliMUONHitForRec::NormalizedChi2WithHitForRec(AliMUONHitForRec* hitForRec, Double_t Sigma2Cut) const |
a9e2aefa | 192 | { |
208f139e | 193 | /// Calculate the normalized Chi2 between the current hitForRec (this) and the hitForRec pointed to by "hitForRec", |
194 | /// i.e. the square deviations between the coordinates, in both the bending and the non bending plane, | |
d19b6003 | 195 | /// divided by the variance of the same quantities and by "Sigma2Cut". |
208f139e | 196 | /// Returns 3 if none of the 2 quantities is OK, something smaller than or equal to 2 otherwise. |
197 | /// Would it be more correct to use a real chi square including the non diagonal term ???? | |
d19b6003 | 198 | |
a9e2aefa | 199 | Double_t chi2, chi2Max, diff, normDiff; |
200 | chi2 = 0.0; | |
201 | chi2Max = 3.0; | |
202 | // coordinate in bending plane | |
30178c30 | 203 | diff = fBendingCoor - hitForRec->fBendingCoor; |
208f139e | 204 | normDiff = diff * diff / (fBendingReso2 + hitForRec->fBendingReso2) / Sigma2Cut; |
a9e2aefa | 205 | if (normDiff > 1.0) return chi2Max; |
206 | chi2 = chi2 + normDiff; | |
207 | // coordinate in non bending plane | |
30178c30 | 208 | diff = fNonBendingCoor - hitForRec->fNonBendingCoor; |
208f139e | 209 | normDiff = diff * diff / (fNonBendingReso2 + hitForRec->fNonBendingReso2) / Sigma2Cut; |
a9e2aefa | 210 | if (normDiff > 1.0) return chi2Max; |
211 | chi2 = chi2 + normDiff; | |
212 | return chi2; | |
213 | } | |
c8245e7e | 214 | |
215 | //______________________________________________________________________________ | |
216 | void | |
217 | AliMUONHitForRec::Print(Option_t* /*opt*/) const | |
218 | { | |
9c4d2d12 | 219 | /// Printing |
220 | ||
c8245e7e | 221 | cout << "<AliMUONHitForRec> Coordinates (B,NB,Z) = (" |
222 | << setw(8) << setprecision(5) << fBendingCoor | |
223 | << "," << setw(8) << setprecision(5) << fNonBendingCoor << "," | |
224 | << setw(8) << setprecision(5) << fZ << ") " | |
225 | << "Reso (B,NB)=(" << setw(8) << setprecision(5) << TMath::Sqrt(fBendingReso2) | |
226 | << "," << setw(8) << setprecision(5) << TMath::Sqrt(fNonBendingReso2) | |
227 | << ") " | |
228 | << "Number " << setw(3) << fHitNumber | |
229 | << " within chamber " << setw(3) <<fChamberNumber | |
230 | << " DE " << setw(4) << fDetElemId | |
231 | << endl; | |
232 | } |