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13918578 | 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 | **************************************************************************/ | |
bf6adc12 | 15 | |
16 | /* $Id$ */ | |
17 | ||
13918578 | 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 | ||
13918578 | 26 | #include "AliITSgeom.h" |
27 | #include "AliITStrackSA.h" | |
28 | ||
29 | ||
30 | ClassImp(AliITStrackSA) | |
31 | ||
32 | //_____________________________________ | |
e399f961 | 33 | AliITStrackSA:: AliITStrackSA() : AliITStrackMI(), |
34 | fNSA(0) | |
35 | { | |
13918578 | 36 | // Default constructor |
37 | SetNumberOfClusters(0); | |
38 | SetNumberOfClustersSA(0); | |
39 | ResetIndexSA(); | |
7e5bf5af | 40 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ |
41 | SetNumberOfMarked(nlay,0); | |
42 | } | |
43 | ResetMarked(); | |
13918578 | 44 | } |
45 | ||
46 | ||
47 | //___________________________________________________ | |
15dd636f | 48 | AliITStrackSA::AliITStrackSA(const AliITStrackMI& t) : |
e399f961 | 49 | AliITStrackMI(t), |
50 | fNSA(0){ | |
13918578 | 51 | // Copy a V2 track into a SA track |
52 | SetNumberOfClustersSA(0); | |
53 | ResetIndexSA(); | |
7e5bf5af | 54 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ |
55 | SetNumberOfMarked(nlay,0); | |
56 | } | |
57 | ResetMarked(); | |
58 | ||
13918578 | 59 | } |
60 | //___________________________________________________ | |
61 | AliITStrackSA::AliITStrackSA(const AliITStrackSA& t) : | |
e399f961 | 62 | AliITStrackMI(t), |
63 | fNSA(t.fNSA){ | |
13918578 | 64 | // Copy constructor |
65 | ||
7d62fb64 | 66 | |
13918578 | 67 | ResetIndexSA(); |
7e5bf5af | 68 | ResetMarked(); |
13918578 | 69 | Int_t number = t.GetNumberOfClustersSA(); |
70 | SetNumberOfClustersSA(number); | |
7e5bf5af | 71 | for(Int_t nlay=0;nlay<fgkLayers;nlay++){ |
72 | SetNumberOfMarked(nlay,t.GetNumberOfMarked(nlay)); | |
73 | } | |
13918578 | 74 | for(Int_t i=0;i<number;i++){ |
75 | fSain[i]=t.fSain[i]; | |
76 | } | |
7e5bf5af | 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 | } | |
13918578 | 82 | } |
83 | //____________________________________________________ | |
e399f961 | 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 | { | |
13918578 | 87 | // standard constructor. Used for ITS standalone tracking |
7d62fb64 | 88 | |
13918578 | 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); | |
6c94f330 | 97 | Double_t sAlpha=TMath::ATan2(rotmatr[1],rotmatr[0])+TMath::Pi(); |
98 | sAlpha+=TMath::Pi()/2.; | |
99 | if(layer==1) sAlpha+=TMath::Pi(); | |
13918578 | 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); | |
6c94f330 | 111 | Double_t sX=x*cp+y*sp; |
13918578 | 112 | |
113 | ||
114 | fdEdx = 0; | |
115 | ||
6c94f330 | 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 | ||
13918578 | 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); | |
7e5bf5af | 147 | for(Int_t nlay=0;nlay<fgkLayers;nlay++) SetNumberOfMarked(nlay,0); |
13918578 | 148 | ResetIndexSA(); |
7e5bf5af | 149 | ResetMarked(); |
13918578 | 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 | ||
7e5bf5af | 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 | ||
13918578 | 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 | ||
7e5bf5af | 199 | //_____________________________________________________________ |
200 | void AliITStrackSA::ResetMarked(){ | |
13918578 | 201 | |
7e5bf5af | 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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