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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 | |
3d1463c8 | 18 | //----------------------------------------------------------------------------- |
d19b6003 | 19 | // Class AliMUONHitForRec |
20 | // ------------------------ | |
a9e2aefa | 21 | // Hit for reconstruction in ALICE dimuon spectrometer |
d19b6003 | 22 | // Author: J. Gosset |
3d1463c8 | 23 | //----------------------------------------------------------------------------- |
a9e2aefa | 24 | |
25 | #include "AliMUONHitForRec.h" | |
2060b217 | 26 | #include "AliMUONVCluster.h" |
29fc2c86 | 27 | #include "AliMUONConstants.h" |
8c343c7c | 28 | #include "AliLog.h" |
2060b217 | 29 | #include "TMath.h" |
c8245e7e | 30 | #include "Riostream.h" |
a9e2aefa | 31 | |
7945aae7 | 32 | /// \cond CLASSIMP |
a9e2aefa | 33 | ClassImp(AliMUONHitForRec) // Class implementation in ROOT context |
7945aae7 | 34 | /// \endcond |
a9e2aefa | 35 | |
36 | //__________________________________________________________________________ | |
30178c30 | 37 | AliMUONHitForRec::AliMUONHitForRec() |
54d7ba50 | 38 | : TObject(), |
39 | fBendingCoor(0.), | |
40 | fNonBendingCoor(0.), | |
41 | fZ(0.), | |
42 | fBendingReso2(0.), | |
43 | fNonBendingReso2(0.), | |
44 | fChamberNumber(0), | |
45 | fDetElemId(0), | |
46 | fHitNumber(0), | |
47 | fTTRTrack(0), | |
48 | fTrackRefSignal(0), | |
54d7ba50 | 49 | fNTrackHits(0) |
30178c30 | 50 | { |
d19b6003 | 51 | /// Default Constructor |
30178c30 | 52 | |
30178c30 | 53 | } |
54 | ||
55 | //__________________________________________________________________________ | |
2060b217 | 56 | AliMUONHitForRec::AliMUONHitForRec(AliMUONVCluster* theRawCluster) |
54d7ba50 | 57 | : TObject(), |
2060b217 | 58 | fBendingCoor(theRawCluster->GetY()), |
59 | fNonBendingCoor(theRawCluster->GetX()), | |
54d7ba50 | 60 | fZ(0.), |
61 | fBendingReso2(0.), | |
62 | fNonBendingReso2(0.), | |
63 | fChamberNumber(0), | |
64 | fDetElemId(theRawCluster->GetDetElemId()), | |
65 | fHitNumber(0), | |
66 | fTTRTrack(-1), | |
67 | fTrackRefSignal(-1), | |
54d7ba50 | 68 | fNTrackHits(0) |
a9e2aefa | 69 | { |
d19b6003 | 70 | /// Constructor for AliMUONHitForRec from a raw cluster. |
71 | /// Fills the bending and non bending coordinates. | |
72 | ||
a9e2aefa | 73 | // other fields will be updated in |
74 | // AliMUONEventReconstructor::AddHitsForRecFromRawClusters, | |
a9e2aefa | 75 | return; |
76 | } | |
77 | ||
30178c30 | 78 | //__________________________________________________________________________ |
b8dc484b | 79 | AliMUONHitForRec::AliMUONHitForRec (const AliMUONHitForRec& theMUONHitForRec) |
54d7ba50 | 80 | : TObject(theMUONHitForRec), |
81 | fBendingCoor(theMUONHitForRec.fBendingCoor), | |
82 | fNonBendingCoor(theMUONHitForRec.fNonBendingCoor), | |
83 | fZ(theMUONHitForRec.fZ), | |
84 | fBendingReso2(theMUONHitForRec.fBendingReso2), | |
85 | fNonBendingReso2(theMUONHitForRec.fNonBendingReso2), | |
86 | fChamberNumber(theMUONHitForRec.fChamberNumber), | |
87 | fDetElemId(theMUONHitForRec.fDetElemId), | |
88 | fHitNumber(theMUONHitForRec.fHitNumber), | |
89 | fTTRTrack(theMUONHitForRec.fTTRTrack), | |
90 | fTrackRefSignal(theMUONHitForRec.fTrackRefSignal), | |
54d7ba50 | 91 | fNTrackHits(theMUONHitForRec.fNTrackHits) |
a9e2aefa | 92 | { |
d19b6003 | 93 | /// Copy constructor |
94 | ||
71a2d3aa | 95 | } |
96 | ||
97 | //__________________________________________________________________________ | |
98 | AliMUONHitForRec::~AliMUONHitForRec() | |
99 | { | |
100 | /// Destructor | |
a9e2aefa | 101 | } |
102 | ||
30178c30 | 103 | //__________________________________________________________________________ |
b8dc484b | 104 | AliMUONHitForRec & AliMUONHitForRec::operator=(const AliMUONHitForRec& theMUONHitForRec) |
a9e2aefa | 105 | { |
d19b6003 | 106 | /// Assignment operator |
107 | ||
b8dc484b | 108 | fBendingCoor = theMUONHitForRec.fBendingCoor; |
109 | fNonBendingCoor = theMUONHitForRec.fNonBendingCoor; | |
110 | fZ = theMUONHitForRec.fZ; | |
111 | fBendingReso2 = theMUONHitForRec.fBendingReso2; | |
112 | fNonBendingReso2 = theMUONHitForRec.fNonBendingReso2; | |
113 | fChamberNumber = theMUONHitForRec.fChamberNumber; | |
38804330 | 114 | fDetElemId = theMUONHitForRec.fDetElemId; |
b8dc484b | 115 | fHitNumber = theMUONHitForRec.fHitNumber; |
29fc2c86 | 116 | fTTRTrack = theMUONHitForRec.fTTRTrack; |
117 | fTrackRefSignal = theMUONHitForRec.fTrackRefSignal; | |
b8dc484b | 118 | fNTrackHits = theMUONHitForRec.fNTrackHits; |
b8dc484b | 119 | return *this; |
a9e2aefa | 120 | } |
a9e2aefa | 121 | //__________________________________________________________________________ |
83dbc640 | 122 | /*AZ |
2a941f4e | 123 | Int_t AliMUONHitForRec::Compare(const TObject* Hit) const |
a9e2aefa | 124 | { |
125 | // "Compare" function to sort with increasing chamber number. | |
126 | // Returns -1 (0, +1) if ChamberNumber of current HitForRec | |
127 | // is smaller than (equal to, larger than) ChamberNumber of Hit | |
128 | if (fChamberNumber < ((AliMUONHitForRec*)Hit)->fChamberNumber) return(-1); | |
129 | else if (fChamberNumber == ((AliMUONHitForRec*)Hit)->fChamberNumber) return( 0); | |
130 | else return(+1); | |
131 | } | |
83dbc640 | 132 | */ |
133 | //__________________________________________________________________________ | |
134 | Int_t AliMUONHitForRec::Compare(const TObject* Hit) const | |
135 | { | |
d19b6003 | 136 | /// "Compare" function to sort with decreasing Z-coordinate (spectro. MUON z<0). |
137 | /// Returns 1 (0, -1) if Z-coordinate of current HitForRec | |
138 | /// is smaller than (equal to, larger than) Z-coordinate of Hit | |
139 | ||
5b64e914 | 140 | if (fZ < ((AliMUONHitForRec*)Hit)->fZ) return(1); |
83dbc640 | 141 | else if (fZ == ((AliMUONHitForRec*)Hit)->fZ) return( 0); |
5b64e914 | 142 | else return(-1); |
83dbc640 | 143 | } |
a9e2aefa | 144 | |
145 | //__________________________________________________________________________ | |
30178c30 | 146 | Double_t AliMUONHitForRec::NormalizedChi2WithHitForRec(AliMUONHitForRec* hitForRec, Double_t Sigma2Cut) const |
a9e2aefa | 147 | { |
208f139e | 148 | /// Calculate the normalized Chi2 between the current hitForRec (this) and the hitForRec pointed to by "hitForRec", |
149 | /// i.e. the square deviations between the coordinates, in both the bending and the non bending plane, | |
d19b6003 | 150 | /// divided by the variance of the same quantities and by "Sigma2Cut". |
208f139e | 151 | /// Returns 3 if none of the 2 quantities is OK, something smaller than or equal to 2 otherwise. |
152 | /// Would it be more correct to use a real chi square including the non diagonal term ???? | |
d19b6003 | 153 | |
a9e2aefa | 154 | Double_t chi2, chi2Max, diff, normDiff; |
155 | chi2 = 0.0; | |
156 | chi2Max = 3.0; | |
157 | // coordinate in bending plane | |
30178c30 | 158 | diff = fBendingCoor - hitForRec->fBendingCoor; |
208f139e | 159 | normDiff = diff * diff / (fBendingReso2 + hitForRec->fBendingReso2) / Sigma2Cut; |
a9e2aefa | 160 | if (normDiff > 1.0) return chi2Max; |
161 | chi2 = chi2 + normDiff; | |
162 | // coordinate in non bending plane | |
30178c30 | 163 | diff = fNonBendingCoor - hitForRec->fNonBendingCoor; |
208f139e | 164 | normDiff = diff * diff / (fNonBendingReso2 + hitForRec->fNonBendingReso2) / Sigma2Cut; |
a9e2aefa | 165 | if (normDiff > 1.0) return chi2Max; |
166 | chi2 = chi2 + normDiff; | |
167 | return chi2; | |
168 | } | |
c8245e7e | 169 | |
170 | //______________________________________________________________________________ | |
171 | void | |
172 | AliMUONHitForRec::Print(Option_t* /*opt*/) const | |
173 | { | |
9c4d2d12 | 174 | /// Printing |
175 | ||
c8245e7e | 176 | cout << "<AliMUONHitForRec> Coordinates (B,NB,Z) = (" |
177 | << setw(8) << setprecision(5) << fBendingCoor | |
178 | << "," << setw(8) << setprecision(5) << fNonBendingCoor << "," | |
179 | << setw(8) << setprecision(5) << fZ << ") " | |
180 | << "Reso (B,NB)=(" << setw(8) << setprecision(5) << TMath::Sqrt(fBendingReso2) | |
181 | << "," << setw(8) << setprecision(5) << TMath::Sqrt(fNonBendingReso2) | |
182 | << ") " | |
183 | << "Number " << setw(3) << fHitNumber | |
184 | << " within chamber " << setw(3) <<fChamberNumber | |
185 | << " DE " << setw(4) << fDetElemId | |
186 | << endl; | |
187 | } |