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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 | // Implementation of the base class for fast track fitters | |
18 | // | |
19 | // | |
20 | //----------------------------------------------------------------- | |
21 | ||
22 | #include <TMatrixDSym.h> | |
23 | #include <TArrayI.h> | |
24 | ||
25 | #include "AliTrackFitter.h" | |
26 | #include "AliTrackPointArray.h" | |
27 | #include "AliLog.h" | |
28 | ||
29 | ClassImp(AliTrackFitter) | |
30 | ||
31 | //_____________________________________________________________________________ | |
32 | AliTrackFitter::AliTrackFitter() | |
33 | { | |
34 | // default constructor | |
35 | // | |
36 | for (Int_t i=0;i<6;i++) fParams[i] = 0; | |
37 | fCov = 0; | |
38 | fPoints = 0; | |
39 | fPVolId = fPTrack = 0; | |
40 | fChi2 = 0; | |
41 | fNdf = 0; | |
42 | fMinNPoints = 0; | |
43 | fIsOwner = kFALSE; | |
44 | } | |
45 | ||
46 | //_____________________________________________________________________________ | |
47 | AliTrackFitter::AliTrackFitter(AliTrackPointArray *array, Bool_t owner) | |
48 | { | |
49 | // constructor from space points array | |
50 | // | |
51 | for (Int_t i=0;i<6;i++) fParams[i] = 0; | |
52 | fCov = new TMatrixDSym(6); | |
53 | fPVolId = fPTrack = 0; | |
54 | fChi2 = 0; | |
55 | fNdf = 0; | |
56 | fMinNPoints = 0; | |
57 | fIsOwner = kFALSE; | |
58 | SetTrackPointArray(array,owner); | |
59 | } | |
60 | ||
61 | //_____________________________________________________________________________ | |
62 | AliTrackFitter::AliTrackFitter(const AliTrackFitter &fitter): | |
63 | TObject(fitter) | |
64 | { | |
65 | // Copy constructor | |
66 | // | |
67 | SetTrackPointArray(fitter.fPoints,fitter.fIsOwner); | |
68 | for (Int_t i=0;i<6;i++) fParams[i] = fitter.fParams[i]; | |
69 | fCov = new TMatrixDSym(*fitter.fCov); | |
70 | fChi2 = fitter.fChi2; | |
71 | fNdf = fitter.fNdf; | |
72 | fMinNPoints = fitter.fMinNPoints; | |
73 | fIsOwner = kFALSE; | |
74 | } | |
75 | ||
76 | //_____________________________________________________________________________ | |
77 | AliTrackFitter &AliTrackFitter::operator =(const AliTrackFitter& fitter) | |
78 | { | |
79 | // assignment operator | |
80 | // | |
81 | if(this==&fitter) return *this; | |
82 | ||
83 | SetTrackPointArray(fitter.fPoints); | |
84 | for (Int_t i=0;i<6;i++) fParams[i] = fitter.fParams[i]; | |
85 | fCov = new TMatrixDSym(*fitter.fCov); | |
86 | fChi2 = fitter.fChi2; | |
87 | fNdf = fitter.fNdf; | |
88 | fMinNPoints = fitter.fMinNPoints; | |
89 | fIsOwner = kFALSE; | |
90 | ||
91 | return *this; | |
92 | } | |
93 | ||
94 | //_____________________________________________________________________________ | |
95 | AliTrackFitter::~AliTrackFitter() | |
96 | { | |
97 | if (fIsOwner) | |
98 | delete fPoints; | |
99 | delete fCov; | |
100 | } | |
101 | ||
102 | //_____________________________________________________________________________ | |
103 | void AliTrackFitter::Reset() | |
104 | { | |
105 | for (Int_t i=0;i<6;i++) fParams[i] = 0; | |
106 | delete fCov; | |
107 | fCov = new TMatrixDSym(6); | |
108 | fPVolId = fPTrack = 0; | |
109 | fChi2 = 0; | |
110 | fNdf = 0; | |
111 | } | |
112 | ||
113 | void AliTrackFitter::SetTrackPointArray(AliTrackPointArray *array, Bool_t owner) | |
114 | { | |
115 | // Load space points from array | |
116 | // By default we don't copy them but | |
117 | // just put the pointers to them | |
118 | if (!array) { | |
119 | AliWarning("Invalid pointer to the space-points array !"); | |
120 | if (fIsOwner) delete fPoints; | |
121 | fPoints = NULL; | |
122 | return; | |
123 | } | |
124 | ||
125 | Reset(); | |
126 | ||
127 | if (fIsOwner) delete fPoints; | |
128 | ||
129 | if (owner) { | |
130 | fPoints = new AliTrackPointArray(*array); | |
131 | fIsOwner = kTRUE; | |
132 | } | |
133 | else { | |
134 | fPoints = array; | |
135 | fIsOwner = kFALSE; | |
136 | } | |
137 | } | |
138 | ||
139 | Bool_t AliTrackFitter::FindVolId(const TArrayI *array, UShort_t volid) const | |
140 | { | |
141 | // The method is used to check whenever | |
142 | // the volume id (volid) is contained in | |
143 | // a array of integers | |
144 | Int_t nVolIds = array->GetSize(); | |
145 | if (nVolIds == 0) return kFALSE; | |
146 | ||
147 | Bool_t found = kFALSE; | |
148 | for (Int_t iVolId = 0; iVolId < nVolIds; iVolId++) { | |
149 | if ((*array)[iVolId] == volid) { | |
150 | found = kTRUE; | |
151 | break; | |
152 | } | |
153 | } | |
154 | ||
155 | return found; | |
156 | } |