added max events to process
[u/mrichter/AliRoot.git] / PWG1 / AliESDRecKinkInfo.cxx
CommitLineData
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"
76472f75 55#include "AliMCInfo.h"
56#include "AliGenKinkInfo.h"
57#include "AliGenV0Info.h"
6fc428f0 58#include "AliESDRecKinkInfo.h"
59
60
61
62ClassImp(AliESDRecKinkInfo)
63
64
65
66
67
68////
69void AliESDRecKinkInfo::Update()
70{
71
72 if ( (fT1.fTPCOn)&& (fT2.fTPCOn)){
73 //
74 // IF BOTH RECONSTRUCTED
75 Float_t distance1,distance2;
76 Double_t xx[3],pp[3];
77 //
78 Double_t xd[3],pd[3],signd;
79 Double_t xm[3],pm[3],signm;
80 for (Int_t i=0;i<3;i++){
81 xd[i] = fT2.fTPCinR1[i];
82 pd[i] = fT2.fTPCinP1[i];
83 xm[i] = fT1.fTPCinR1[i];
84 pm[i] = fT1.fTPCinP1[i];
85 }
86 signd = fT2.fSign<0 ? -1:1;
87 signm = fT1.fSign<0 ? -1:1;
88
89 AliHelix dhelix1(xd,pd,signd);
90 dhelix1.GetMomentum(0,pp,0);
91 dhelix1.Evaluate(0,xx);
92 //
93 // Double_t x2[3],p2[3];
94 //
95 AliHelix mhelix(xm,pm,signm);
96 //
97 //find intersection linear
98 //
99 Double_t phase[2][2],radius[2];
100 Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
101 Double_t delta1=10000,delta2=10000;
102
103 if (points==1){
104 fMinR = TMath::Sqrt(radius[0]);
105 }
106 if (points==2){
107 fMinR =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
108 }
109
110 if (points>0){
111 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
112 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
113 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
114 }
115 if (points==2){
116 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
117 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
118 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
119 }
120 if (points==1){
121 fMinR = TMath::Sqrt(radius[0]);
122 fDistMinR = delta1;
123 }
124 if (points==2){
125 if (radius[0]<radius[1]){
126 fMinR = TMath::Sqrt(radius[0]);
127 fDistMinR = delta1;
128 }
129 else{
130 fMinR = TMath::Sqrt(radius[1]);
131 fDistMinR = delta2;
132 }
133 }
134 //
135 //
136 distance1 = TMath::Min(delta1,delta2);
137 //
138 //find intersection parabolic
139 //
140 points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
141 delta1=10000,delta2=10000;
142
143 if (points>0){
144 dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
145 }
146 if (points==2){
147 dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
148 }
149
150 distance2 = TMath::Min(delta1,delta2);
151 if (delta1<delta2){
152 //get V0 info
153 dhelix1.Evaluate(phase[0][0],fXr);
154 dhelix1.GetMomentum(phase[0][0],fPdr);
155 mhelix.GetMomentum(phase[0][1],fPm);
156 dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
157 fRr = TMath::Sqrt(radius[0]);
158 }
159 else{
160 dhelix1.Evaluate(phase[1][0],fXr);
161 dhelix1.GetMomentum(phase[1][0], fPdr);
162 mhelix.GetMomentum(phase[1][1], fPm);
163 dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
164 fRr = TMath::Sqrt(radius[1]);
165 }
166 fDist1 = TMath::Sqrt(distance1);
167 fDist2 = TMath::Sqrt(distance2);
168
169 if (fDist2<10.5){
170 Double_t x,alpha,param[5],cov[15];
171 //
172 fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
173 fT1.GetESDtrack()->GetInnerExternalCovariance(cov);
174 AliExternalTrackParam paramm(x,alpha,param,cov);
175 //
176 fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
177 fT2.GetESDtrack()->GetInnerExternalCovariance(cov);
178 AliExternalTrackParam paramd(x,alpha,param,cov);
179 /*
180 AliESDkink kink;
181 kink.Update(&paramm,&paramd);
182 // kink.Dump();
183 Double_t diff = kink.fRr-fRr;
184 Double_t diff2 = kink.fDist2-fDist2;
185 printf("Diff\t%f\t%f\n",diff,diff2);
186 */
187 }
188
189 //
190 //
191 }
192
193}
194