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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-2003, 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 | /* $Id$ */ | |
17 | ||
18 | //////////////////////////////////////////////////// | |
19 | // Stand alone track class // | |
20 | // Origin: Elisabetta Crescio // | |
21 | // e-mail: crescio@to.infn.it // | |
22 | // it is a V2 track with a possible number // | |
23 | // of cluster equal to fgkMaxNumberOfClusters // | |
24 | //////////////////////////////////////////////////// | |
25 | ||
26 | #include "AliITSgeom.h" | |
27 | #include "AliITStrackSA.h" | |
28 | ||
29 | ||
30 | ClassImp(AliITStrackSA) | |
31 | ||
32 | //_____________________________________ | |
33 | AliITStrackSA:: AliITStrackSA() : AliITStrackMI(), | |
34 | fNSA(0) | |
35 | { | |
36 | // Default constructor | |
37 | SetNumberOfClusters(0); | |
38 | SetNumberOfClustersSA(0); | |
39 | ResetIndexSA(); | |
40 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ | |
41 | SetNumberOfMarked(nlay,0); | |
42 | } | |
43 | ResetMarked(); | |
44 | } | |
45 | ||
46 | ||
47 | //___________________________________________________ | |
48 | AliITStrackSA::AliITStrackSA(const AliITStrackMI& t) : | |
49 | AliITStrackMI(t), | |
50 | fNSA(0){ | |
51 | // Copy a V2 track into a SA track | |
52 | SetNumberOfClustersSA(0); | |
53 | ResetIndexSA(); | |
54 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ | |
55 | SetNumberOfMarked(nlay,0); | |
56 | } | |
57 | ResetMarked(); | |
58 | ||
59 | } | |
60 | //___________________________________________________ | |
61 | AliITStrackSA::AliITStrackSA(const AliITStrackSA& t) : | |
62 | AliITStrackMI(t), | |
63 | fNSA(t.fNSA){ | |
64 | // Copy constructor | |
65 | ||
66 | ||
67 | ResetIndexSA(); | |
68 | ResetMarked(); | |
69 | Int_t number = t.GetNumberOfClustersSA(); | |
70 | SetNumberOfClustersSA(number); | |
71 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ | |
72 | SetNumberOfMarked(nlay,t.GetNumberOfMarked(nlay)); | |
73 | } | |
74 | for(Int_t i=0;i<number;i++){ | |
75 | fSain[i]=t.fSain[i]; | |
76 | } | |
77 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ | |
78 | for(Int_t i=0;i<t.GetNumberOfMarked(nlay);i++){ | |
79 | fCluMark[nlay][i]=t.fCluMark[nlay][i]; | |
80 | } | |
81 | } | |
82 | } | |
83 | //____________________________________________________ | |
84 | AliITStrackSA::AliITStrackSA(AliITSgeom* geom,Int_t layer, Int_t ladder, Int_t detector, Double_t Ycoor, Double_t Zcoor, Double_t phi, Double_t tanlambda, Double_t curv, Int_t lab ): | |
85 | fNSA(0) | |
86 | { | |
87 | // standard constructor. Used for ITS standalone tracking | |
88 | ||
89 | if(!geom){ | |
90 | Fatal("AliITStrackSA","ITS geometry not found - Abort\n"); | |
91 | return; | |
92 | } | |
93 | // get the azimuthal angle of the detector containing the innermost | |
94 | // cluster of this track (data member fAlpha) | |
95 | Float_t rotmatr[9]; | |
96 | geom->GetRotMatrix(layer,ladder,detector,rotmatr); | |
97 | Double_t sAlpha=TMath::ATan2(rotmatr[1],rotmatr[0])+TMath::Pi(); | |
98 | sAlpha+=TMath::Pi()/2.; | |
99 | if(layer==1) sAlpha+=TMath::Pi(); | |
100 | ||
101 | ||
102 | // get the radius of this detector. Procedure taken from the | |
103 | // AliITStrackerV2 constructor | |
104 | Float_t x=0,y=0,z=0; | |
105 | geom->GetTrans(layer,ladder,detector,x,y,z); | |
106 | ||
107 | Double_t fi=TMath::ATan2(rotmatr[1],rotmatr[0])+TMath::Pi(); | |
108 | fi+=TMath::Pi()/2; | |
109 | if (layer==1) fi+=TMath::Pi(); | |
110 | Double_t cp=TMath::Cos(fi), sp=TMath::Sin(fi); | |
111 | Double_t sX=x*cp+y*sp; | |
112 | ||
113 | ||
114 | fdEdx = 0; | |
115 | ||
116 | Double_t conv=GetBz()*kB2C; | |
117 | Double_t sC[] = {0.000009, // 0.000009 | |
118 | 0., | |
119 | 0.000003, //0.000030 | |
120 | 0., | |
121 | 0., | |
122 | 0.000001, //0.000001 | |
123 | 0., | |
124 | 0., | |
125 | 0., | |
126 | 0.000002, //0.000002 | |
127 | 0., | |
128 | 0., | |
129 | 0., | |
130 | 0., | |
131 | 0.000001/(conv*conv)}; //0.0000001 | |
132 | ||
133 | Double_t sP[] = {Ycoor, | |
134 | Zcoor, | |
135 | TMath::Sin(phi-sAlpha), | |
136 | tanlambda, | |
137 | curv/conv}; | |
138 | ||
139 | Set(sX,sAlpha,sP,sC); | |
140 | ||
141 | for(Int_t i=0; i<kMaxLayer; i++) fIndex[i] = 0; // to be set explicitely | |
142 | ||
143 | for(Int_t i=0; i<4; i++) fdEdxSample[i] = 0; | |
144 | ||
145 | SetNumberOfClusters(0); | |
146 | SetNumberOfClustersSA(0); | |
147 | for(Int_t nlay=0;nlay<fgkLayers;nlay++) SetNumberOfMarked(nlay,0); | |
148 | ResetIndexSA(); | |
149 | ResetMarked(); | |
150 | SetChi2(0); | |
151 | SetMass(0.139); // pion mass | |
152 | SetLabel(lab); | |
153 | ||
154 | } | |
155 | ||
156 | //____________________________________________________________ | |
157 | void AliITStrackSA::AddClusterSA(Int_t layer, Int_t clnumb) { | |
158 | // add one clusters to the list (maximum number=fgkMaxNumberOfClusters) | |
159 | Int_t presnum = GetNumberOfClustersSA(); | |
160 | if(presnum>=fgkMaxNumberOfClusters){ | |
161 | Warning("AddClusterSA","Maximum number of clusters already reached. Nothing is done\n"); | |
162 | return; | |
163 | } | |
164 | ||
165 | fSain[presnum] = (layer<<28)+clnumb; | |
166 | presnum++; | |
167 | SetNumberOfClustersSA(presnum); | |
168 | } | |
169 | ||
170 | //____________________________________________________________ | |
171 | void AliITStrackSA::AddClusterMark(Int_t layer, Int_t clnumb) { | |
172 | // add one clusters to the list (maximum number=fgkMaxNumberOfClusters) | |
173 | Int_t presnum = GetNumberOfMarked(layer); | |
174 | // printf("presnum=%d\n",presnum); | |
175 | if(presnum>=fgkMaxNumberOfClustersL){ | |
176 | Warning("AddClusterMark","Maximum number of clusters already reached. Nothing is done\n"); | |
177 | return; | |
178 | } | |
179 | ||
180 | fCluMark[layer][presnum] = clnumb; | |
181 | presnum++; | |
182 | SetNumberOfMarked(layer,presnum); | |
183 | } | |
184 | ||
185 | //____________________________________________________________ | |
186 | void AliITStrackSA::AddClusterV2(Int_t layer,Int_t clnumb) { | |
187 | // add one clusters to the list (maximum number=6) | |
188 | Int_t presnum = GetNumberOfClusters(); | |
189 | if(presnum>=kMaxLayer){ | |
190 | Warning("AddClusterV2","Maximum number of clusters already reached. Nothing is done\n"); | |
191 | return; | |
192 | } | |
193 | ||
194 | fIndex[presnum] = (layer<<28)+clnumb; | |
195 | presnum++; | |
196 | SetNumberOfClusters(presnum); | |
197 | } | |
198 | ||
199 | //_____________________________________________________________ | |
200 | void AliITStrackSA::ResetMarked(){ | |
201 | ||
202 | //Reset array of marked clusters | |
203 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ | |
204 | for(Int_t k=0; k<fgkMaxNumberOfClustersL; k++) fCluMark[nlay][k]=0; | |
205 | } | |
206 | } | |
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