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5b4ed716 | 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 | // * | |
18 | // * | |
19 | // * this class defines the TOF object to be stored | |
20 | // * in OCDB in order to have TOF response correction | |
21 | // * and actual resolution | |
22 | // * | |
23 | // * | |
24 | // * | |
25 | // * | |
26 | ||
27 | #include "AliTOFResponseParams.h" | |
28 | #include "TGraph.h" | |
29 | ||
30 | ClassImp(AliTOFResponseParams) | |
31 | ||
32 | //_________________________________________________________ | |
33 | ||
34 | AliTOFResponseParams::AliTOFResponseParams() : | |
35 | TObject() | |
36 | { | |
37 | /* | |
38 | * default constructor | |
39 | */ | |
40 | ||
41 | for (Int_t ipart = 0; ipart < AliPID::kSPECIES; ipart++) | |
42 | fNPoints[ipart] = 0; | |
43 | } | |
44 | ||
45 | //_________________________________________________________ | |
46 | ||
47 | AliTOFResponseParams::AliTOFResponseParams(Int_t *nPoints) : | |
48 | TObject() | |
49 | { | |
50 | /* | |
51 | * default constructor | |
52 | */ | |
53 | ||
54 | for (Int_t ipart = 0; ipart < AliPID::kSPECIES; ipart++) | |
55 | fNPoints[ipart] = nPoints[ipart] < fgkMaxPoints ? nPoints[ipart] : fgkMaxPoints; | |
56 | } | |
57 | ||
58 | //_________________________________________________________ | |
59 | ||
60 | AliTOFResponseParams::~AliTOFResponseParams() | |
61 | { | |
62 | /* | |
63 | * default destructor | |
64 | */ | |
65 | ||
66 | } | |
67 | ||
68 | //_________________________________________________________ | |
69 | ||
70 | AliTOFResponseParams::AliTOFResponseParams(const AliTOFResponseParams &source) : | |
71 | TObject(source) | |
72 | { | |
73 | /* | |
74 | * copy constructor | |
75 | */ | |
76 | ||
77 | for (Int_t ipart = 0; ipart < AliPID::kSPECIES; ipart++) { | |
78 | fNPoints[ipart] = source.fNPoints[ipart]; | |
79 | for (Int_t ipoint = 0; ipoint < fNPoints[ipart]; ipoint++) { | |
80 | fP[ipart][ipoint] = source.fP[ipart][ipoint]; | |
81 | fTExpCorr[ipart][ipoint] = source.fTExpCorr[ipart][ipoint]; | |
82 | } | |
83 | } | |
84 | ||
85 | } | |
86 | ||
87 | //_________________________________________________________ | |
88 | ||
89 | AliTOFResponseParams & | |
90 | AliTOFResponseParams::operator=(const AliTOFResponseParams &source) | |
91 | { | |
92 | /* | |
93 | * operator= | |
94 | */ | |
95 | ||
96 | if (this == &source) return *this; | |
97 | TObject::operator=(source); | |
98 | ||
99 | for (Int_t ipart = 0; ipart < AliPID::kSPECIES; ipart++) { | |
100 | fNPoints[ipart] = source.fNPoints[ipart]; | |
101 | for (Int_t ipoint = 0; ipoint < fNPoints[ipart]; ipoint++) { | |
102 | fP[ipart][ipoint] = source.fP[ipart][ipoint]; | |
103 | fTExpCorr[ipart][ipoint] = source.fTExpCorr[ipart][ipoint]; | |
104 | } | |
105 | } | |
106 | ||
107 | return *this; | |
108 | } | |
109 | ||
110 | //_________________________________________________________ | |
111 | ||
112 | TGraph * | |
113 | AliTOFResponseParams::DrawGraph(Int_t ipart, Option_t* option) | |
114 | { | |
115 | /* | |
116 | * draw | |
117 | */ | |
118 | ||
119 | if (ipart >= AliPID::kSPECIES) return NULL; | |
120 | if (fNPoints[ipart] == 0) return NULL; | |
121 | ||
122 | TGraph *graph = new TGraph(fNPoints[ipart], fP[ipart], fTExpCorr[ipart]); | |
123 | graph->Draw(option); | |
124 | return graph; | |
125 | } | |
126 | ||
127 | //_________________________________________________________ | |
128 | ||
129 | Double_t | |
130 | AliTOFResponseParams::EvalTExpCorr(Int_t ipart, Double_t p) | |
131 | { | |
132 | /* | |
133 | * eval corr | |
134 | */ | |
135 | ||
136 | if (ipart >= AliPID::kSPECIES) return 0.; | |
137 | if (fNPoints[ipart] == 0) return 0.; | |
138 | if (p < fP[ipart][0]) return fTExpCorr[ipart][0]; | |
139 | if (p >= fP[ipart][fNPoints[ipart] - 1]) return fTExpCorr[ipart][fNPoints[ipart] - 1]; | |
140 | ||
141 | Int_t ipoint; | |
142 | for (ipoint = 0; ipoint < fNPoints[ipart] - 1; ipoint++) | |
143 | if (p >= fP[ipart][ipoint] && p < fP[ipart][ipoint + 1]) break; | |
144 | Double_t coeff = (fTExpCorr[ipart][ipoint + 1] - fTExpCorr[ipart][ipoint]) / (fP[ipart][ipoint + 1] - fP[ipart][ipoint]); | |
145 | Double_t corr = fTExpCorr[ipart][ipoint] + coeff * (p - fP[ipart][ipoint]); | |
146 | return corr; | |
147 | } |