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6fc428f0 | 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 | // Time Projection Chamber // | |
20 | // Comparison macro for reconstructed tracks - ESDs V0s // | |
21 | // responsible: | |
22 | // marian.ivanov@cern.ch // | |
23 | // | |
24 | // | |
25 | ||
26 | ||
27 | ||
28 | ||
29 | ||
30 | #include <stdio.h> | |
31 | #include <string.h> | |
32 | //ROOT includes | |
33 | #include "Rtypes.h" | |
34 | // | |
35 | //ALIROOT includes | |
36 | // | |
37 | #include "AliESDtrack.h" | |
38 | #include "AliTPCParam.h" | |
39 | #include "AliTrackReference.h" | |
40 | #include "AliTPCParamSR.h" | |
41 | #include "AliESD.h" | |
42 | #include "AliESDfriend.h" | |
43 | #include "AliESDtrack.h" | |
44 | #include "AliTPCseed.h" | |
45 | #include "AliITStrackMI.h" | |
46 | #include "AliTRDtrack.h" | |
47 | #include "AliHelix.h" | |
48 | #include "AliESDVertex.h" | |
49 | #include "AliExternalTrackParam.h" | |
50 | #include "AliESDkink.h" | |
51 | #include "AliESDv0.h" | |
52 | #include "AliV0.h" | |
53 | // | |
54 | #include "AliTreeDraw.h" | |
55 | #include "AliGenInfo.h" | |
56 | #include "AliESDRecKinkInfo.h" | |
57 | ||
58 | ||
59 | ||
60 | ClassImp(AliESDRecKinkInfo) | |
61 | ||
62 | ||
63 | ||
64 | ||
65 | ||
66 | //// | |
67 | void AliESDRecKinkInfo::Update() | |
68 | { | |
69 | ||
70 | if ( (fT1.fTPCOn)&& (fT2.fTPCOn)){ | |
71 | // | |
72 | // IF BOTH RECONSTRUCTED | |
73 | Float_t distance1,distance2; | |
74 | Double_t xx[3],pp[3]; | |
75 | // | |
76 | Double_t xd[3],pd[3],signd; | |
77 | Double_t xm[3],pm[3],signm; | |
78 | for (Int_t i=0;i<3;i++){ | |
79 | xd[i] = fT2.fTPCinR1[i]; | |
80 | pd[i] = fT2.fTPCinP1[i]; | |
81 | xm[i] = fT1.fTPCinR1[i]; | |
82 | pm[i] = fT1.fTPCinP1[i]; | |
83 | } | |
84 | signd = fT2.fSign<0 ? -1:1; | |
85 | signm = fT1.fSign<0 ? -1:1; | |
86 | ||
87 | AliHelix dhelix1(xd,pd,signd); | |
88 | dhelix1.GetMomentum(0,pp,0); | |
89 | dhelix1.Evaluate(0,xx); | |
90 | // | |
91 | // Double_t x2[3],p2[3]; | |
92 | // | |
93 | AliHelix mhelix(xm,pm,signm); | |
94 | // | |
95 | //find intersection linear | |
96 | // | |
97 | Double_t phase[2][2],radius[2]; | |
98 | Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200); | |
99 | Double_t delta1=10000,delta2=10000; | |
100 | ||
101 | if (points==1){ | |
102 | fMinR = TMath::Sqrt(radius[0]); | |
103 | } | |
104 | if (points==2){ | |
105 | fMinR =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1])); | |
106 | } | |
107 | ||
108 | if (points>0){ | |
109 | dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
110 | dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
111 | dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
112 | } | |
113 | if (points==2){ | |
114 | dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
115 | dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
116 | dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
117 | } | |
118 | if (points==1){ | |
119 | fMinR = TMath::Sqrt(radius[0]); | |
120 | fDistMinR = delta1; | |
121 | } | |
122 | if (points==2){ | |
123 | if (radius[0]<radius[1]){ | |
124 | fMinR = TMath::Sqrt(radius[0]); | |
125 | fDistMinR = delta1; | |
126 | } | |
127 | else{ | |
128 | fMinR = TMath::Sqrt(radius[1]); | |
129 | fDistMinR = delta2; | |
130 | } | |
131 | } | |
132 | // | |
133 | // | |
134 | distance1 = TMath::Min(delta1,delta2); | |
135 | // | |
136 | //find intersection parabolic | |
137 | // | |
138 | points = dhelix1.GetRPHIintersections(mhelix, phase, radius); | |
139 | delta1=10000,delta2=10000; | |
140 | ||
141 | if (points>0){ | |
142 | dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1); | |
143 | } | |
144 | if (points==2){ | |
145 | dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2); | |
146 | } | |
147 | ||
148 | distance2 = TMath::Min(delta1,delta2); | |
149 | if (delta1<delta2){ | |
150 | //get V0 info | |
151 | dhelix1.Evaluate(phase[0][0],fXr); | |
152 | dhelix1.GetMomentum(phase[0][0],fPdr); | |
153 | mhelix.GetMomentum(phase[0][1],fPm); | |
154 | dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle); | |
155 | fRr = TMath::Sqrt(radius[0]); | |
156 | } | |
157 | else{ | |
158 | dhelix1.Evaluate(phase[1][0],fXr); | |
159 | dhelix1.GetMomentum(phase[1][0], fPdr); | |
160 | mhelix.GetMomentum(phase[1][1], fPm); | |
161 | dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle); | |
162 | fRr = TMath::Sqrt(radius[1]); | |
163 | } | |
164 | fDist1 = TMath::Sqrt(distance1); | |
165 | fDist2 = TMath::Sqrt(distance2); | |
166 | ||
167 | if (fDist2<10.5){ | |
168 | Double_t x,alpha,param[5],cov[15]; | |
169 | // | |
170 | fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param); | |
171 | fT1.GetESDtrack()->GetInnerExternalCovariance(cov); | |
172 | AliExternalTrackParam paramm(x,alpha,param,cov); | |
173 | // | |
174 | fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param); | |
175 | fT2.GetESDtrack()->GetInnerExternalCovariance(cov); | |
176 | AliExternalTrackParam paramd(x,alpha,param,cov); | |
177 | /* | |
178 | AliESDkink kink; | |
179 | kink.Update(¶mm,¶md); | |
180 | // kink.Dump(); | |
181 | Double_t diff = kink.fRr-fRr; | |
182 | Double_t diff2 = kink.fDist2-fDist2; | |
183 | printf("Diff\t%f\t%f\n",diff,diff2); | |
184 | */ | |
185 | } | |
186 | ||
187 | // | |
188 | // | |
189 | } | |
190 | ||
191 | } | |
192 |