STEER/AliESDComparisonMI.C

   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 ESD                                                 //
  21 //  responsible:
  22 //  marian.ivanov@cern.ch                                                    //
  23 //
  24 //
  25
  26 /*
  27 marian.ivanov@cern.ch
  28 Usage:
  29
  30
  31 .L $ALICE_ROOT/STEER/AliGenInfo.C+
  32 //be sure you created genTracks file before
  33 .L $ALICE_ROOT/STEER/AliESDComparisonMI.C+
  34
  35 //
  36 ESDCmpTr *t2 = new ESDCmpTr("genTracks.root","cmpESDTracks.root","galice.root",-1,0,0);
  37 t2->Exec();
  38
  39 //
  40 //some cuts definition
  41 TCut cprim("cprim","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<0.01&&abs(MC.fVDist[2])<0.01")
  42 //TCut cprim("cprim","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<0.5&&abs(MC.fVDist[2])<0.5")
  43 //TCut citsin("citsin","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<3.9");
  44 TCut citsin("citsin","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<5");
  45 TCut csec("csec","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)>0.5");
  46
  47
  48 TCut crec("crec","fReconstructed==1");
  49 TCut cteta1("cteta1","abs(MC.fParticle.Theta()/3.1415-0.5)<0.25");
  50 TCut cteta05("cteta05","abs(MC.fParticle.Theta()/3.1415-0.5)<0.1");
  51
  52 TCut cpos1("cpos1","abs(MC.fParticle.fVz/sqrt(MC.fParticle.fVx*MC.fParticle.fVx+MC.fParticle.fVy*MC.fParticle.fVy))<1");
  53 TCut csens("csens","abs(sqrt(fVDist[0]**2+fVDist[1]**2)-170)<50");
  54 TCut cmuon("cmuon","abs(MC.fParticle.fPdgCode==-13)");
  55 TCut cchi2("cchi2","fESDTrack.fITSchi2MIP[0]<7.&&fESDTrack.fITSchi2MIP[1]<5.&&fESDTrack.fITSchi2MIP[2]<7.&&fESDTrack.fITSchi2MIP[3]<7.5&&fESDTrack.fITSchi2MIP[4]<6.")
  56
  57 AliESDComparisonDraw comp;
  58 comp.SetIO();
  59 TFile f("genHits.root");
  60 TTree * treel = (TTree*)f.Get("HitLines");
  61 if (treel) comp->fTree->AddFriend(treel,"L");
  62
  63 //
  64 //example
  65 comp.fTree->SetAlias("radius","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)");
  66 comp.fTree->SetAlias("direction","MC.fParticle.fVx*MC.fParticle.fPx+MC.fParticle.fVy*MC.fParticle.fPy");
  67 comp.fTree->SetAlias("decaydir","MC.fTRdecay.fX*MC.fTRdecay.fPx+MC.fTRdecay.fY*MC.fTRdecay.fPy");
  68 comp.fTree->SetAlias("theta","MC.fTrackRef.Theta()");
  69 comp.fTree->SetAlias("primdca","sqrt(RC.fITStrack.fD[0]**2+RC.fITStrack.fD[1]**2)");
  70 comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
  71 comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
  72
  73
  74 TH1F his("his","his",100,0,20);
  75 TH1F hpools("hpools","hpools",100,-7,7);
  76 TH1F hfake("hfake","hfake",1000,0,150);
  77 TProfile profp0("profp0","profp0",20,-0.4,0.9)
  78
  79 comp.DrawXY("fTPCinP0[3]","fTPCDelta[4]/fTPCinP1[3]","fReconstructed==1"+cprim,"1",4,0.2,1.5,-0.06,0.06)
  80 comp.fRes->Draw();
  81 comp.fMean->Draw();
  82
  83 comp.DrawXY("fITSinP0[3]","fITSDelta[4]/fITSinP1[3]","fReconstructed==1&&fITSOn"+cprim,"1",4,0.2,1.5,-0.06,0.06)
  84 comp.fRes->Draw();
  85
  86 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn",20,0.2,1.5)
  87 comp.fRes->Draw();
  88
  89 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn&&fITSOn&&fESDTrack.fITSFakeRatio<0.1",10,0.2,1.5)
  90 comp.fRes->Draw();
  91 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn&&fITSOn&&fESDTrack.fITSFakeRatio>0.1",10,0.2,1.5)
  92 comp.fRes->Draw();
  93
  94 comp.fTree->Draw("fESDTrack.fITSsignal/fESDTrack.fTPCsignal","fITSOn&&fTPCOn&&fESDTrack.fITSFakeRatio==0")
  95
  96 TH1F his("his","his",100,0,20);
  97 TH1F hpools("hpools","hpools",100,-7,7);
  98
  99 TH2F * hdedx0 = new TH2F("dEdx0","dEdx0",100, 0,2,200,0,550); hdedx0->SetMarkerColor(1);
 100 TH2F * hdedx1 = new TH2F("dEdx1","dEdx1",100, 0,2,200,0,550); hdedx1->SetMarkerColor(4);
 101 TH2F * hdedx2 = new TH2F("dEdx2","dEdx2",100, 0,2,200,0,550); hdedx2->SetMarkerColor(3);
 102 TH2F * hdedx3 = new TH2F("dEdx3","dEdx3",100, 0,2,200,0,550); hdedx3->SetMarkerColor(2);
 103
 104 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx0","fITSOn&&abs(fPdg)==211&&fITStrack.fN==6"+cprim)
 105 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx1","fITSOn&&abs(fPdg)==2212&&fITStrack.fN==6"+cprim)
 106 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx2","fITSOn&&abs(fPdg)==321&&fITStrack.fN==6"+cprim)
 107 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx3","fITSOn&&abs(fPdg)==11&&fITStrack.fN==6"+cprim)
 108
 109
 110 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx0","fTRDOn&&abs(fPdg)==211&&fTRDtrack.fN>40&&fStatus[2]>1")
 111 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx1","fTRDOn&&abs(fPdg)==2212&&fTRDtrack.fN>40&&fStatus[2]>1")
 112 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx2","fTRDOn&&abs(fPdg)==321&&fTRDtrack.fN>40&&fStatus[2]>1")
 113 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx3","fTRDOn&&abs(fPdg)==11&&fTRDtrack.fN>40&&fStatus[2]>1")
 114
 115 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx0","fTPCOn&&abs(fPdg)==211&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1);
 116 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx1","fTPCOn&&abs(fPdg)==2212&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1);
 117 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx2","fTPCOn&&abs(fPdg)==321&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1);
 118 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx3","fTPCOn&&abs(fPdg)==11&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1);
 119
 120 hdedx3->SetXTitle("P(GeV/c)");
 121 hdedx3->SetYTitle("dEdx(unit)");
 122 hdedx3->Draw(); hdedx1->Draw("same"); hdedx2->Draw("same"); hdedx0->Draw("same");
 123
 124 comp.DrawXY("fITSinP0[3]","fITSPools[4]","fReconstructed==1&&fPdg==-211&&fITSOn"+cprim,"1",4,0.2,1.0,-8,8)
 125
 126 TProfile prof("prof","prof",10,0.5,5);
 127
 128
 129
 130
 131 */
 132
 133
 134 #if !defined(__CINT__) || defined(__MAKECINT__)
 135 #include <stdio.h>
 136 #include <string.h>
 137 //ROOT includes
 138 #include "Rtypes.h"
 139 #include "TFile.h"
 140 #include "TTree.h"
 141 #include "TChain.h"
 142 #include "TCut.h"
 143 #include "TString.h"
 144 #include "TBenchmark.h"
 145 #include "TStopwatch.h"
 146 #include "TParticle.h"
 147 #include "TSystem.h"
 148 #include "TTimer.h"
 149 #include "TVector3.h"
 150 #include "TPad.h"
 151 #include "TCanvas.h"
 152 #include "TH1F.h"
 153 #include "TH2F.h"
 154 #include "TF1.h"
 155 #include "TText.h"
 156 #include "Getline.h"
 157 #include "TStyle.h"
 158
 159 //ALIROOT includes
 160 #include "AliRun.h"
 161 #include "AliStack.h"
 162 #include "AliESDtrack.h"
 163 #include "AliSimDigits.h"
 164 #include "AliTPCParam.h"
 165 #include "AliTPC.h"
 166 #include "AliTPCLoader.h"
 167 #include "AliDetector.h"
 168 #include "AliTrackReference.h"
 169 #include "AliRun.h"
 170 #include "AliTPCParamSR.h"
 171 #include "AliTracker.h"
 172 #include "AliComplexCluster.h"
 173 #include "AliMagF.h"
 174 #include "AliESD.h"
 175 #include "AliESDtrack.h"
 176 #include "AliITStrackMI.h"
 177 #include "AliTRDtrack.h"
 178 #include "AliHelix.h"
 179 #include "AliESDVertex.h"
 180 #include "AliExternalTrackParam.h"
 181 #include "AliESDkink.h"
 182 #include "AliESDV0MI.h"
 183
 184 #endif
 185 #include "AliGenInfo.h"
 186 #include "AliESDComparisonMI.h"
 187
 188
 189
 190
 191
 192 void MakeAliases(AliESDComparisonDraw&comp)
 193 {
 194   //
 195   // aliases definition
 196   //
 197   comp.fTree->SetAlias("radius","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)");
 198   comp.fTree->SetAlias("direction","MC.fParticle.fVx*MC.fParticle.fPx+MC.fParticle.fVy*MC.fParticle.fPy");
 199   comp.fTree->SetAlias("decaydir","MC.fTRdecay.fX*MC.fTRdecay.fPx+MC.fTRdecay.fY*MC.fTRdecay.fPy");
 200   comp.fTree->SetAlias("theta","MC.fTrackRef.Theta()");
 201   comp.fTree->SetAlias("primdca","sqrt(RC.fITStrack.fD[0]**2+RC.fITStrack.fD[1]**2)");
 202   comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
 203   comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
 204
 205   comp.fTree->SetAlias("trddedx","(RC.fESDTrack.fTRDsignals[0]+RC.fESDTrack.fTRDsignals[1]+RC.fESDTrack.fTRDsignals[2]+RC.fESDTrack.fTRDsignals[3]+RC.fESDTrack.fTRDsignals[4]+RC.fESDTrack.fTRDsignals[5])/6.");
 206
 207   comp.fTree->SetAlias("dtofmc2","fESDTrack.fTrackTime[2]-(10^12*MC.fTOFReferences[0].fTime)");
 208   comp.fTree->SetAlias("dtofrc2","(fESDTrack.fTrackTime[2]-fESDTrack.fTOFsignal)");
 209
 210   comp.fTree->SetAlias("psum","fESDTrack.fTOFr[4]+fESDTrack.fTOFr[3]+fESDTrack.fTOFr[2]+fESDTrack.fTOFr[1]+fESDTrack.fTOFr[0]");
 211   comp.fTree->SetAlias("P0","fESDTrack.fTOFr[0]/psum");
 212   comp.fTree->SetAlias("P1","fESDTrack.fTOFr[1]/psum");
 213   comp.fTree->SetAlias("P2","fESDTrack.fTOFr[2]/psum");
 214   comp.fTree->SetAlias("P3","fESDTrack.fTOFr[3]/psum");
 215   comp.fTree->SetAlias("P4","fESDTrack.fTOFr[4]/psum");
 216   comp.fTree->SetAlias("MaxP","max(max(max(P0,P1),max(P2,P3)),P4)");
 217 }
 218
 219
 220
 221
 222 void  AliESDRecInfo::UpdatePoints(AliESDtrack*track)
 223 {
 224   //
 225   //
 226   Int_t iclusters[200];
 227   Float_t density[160];
 228   for (Int_t i=0;i<160;i++) density[i]=-1.;
 229   fTPCPoints[0]= 160;
 230   fTPCPoints[1] = -1;
 231   //
 232   if (fTPCPoints[0]<fTPCPoints[1]) return;
 233   //  Int_t nclusters=track->GetTPCclusters(iclusters);
 234
 235   Int_t ngood=0;
 236   Int_t undeff=0;
 237   Int_t nall =0;
 238   Int_t range=20;
 239   for (Int_t i=0;i<160;i++){
 240     Int_t last = i-range;
 241     if (nall<range) nall++;
 242     if (last>=0){
 243       if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
 244       if (iclusters[last]==-1) undeff--;
 245     }
 246     if (iclusters[i]>0&& (iclusters[i]&0x8000)==0)   ngood++;
 247     if (iclusters[i]==-1) undeff++;
 248     if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
 249   }
 250   Float_t maxdens=0;
 251   Int_t indexmax =0;
 252   for (Int_t i=0;i<160;i++){
 253     if (density[i]<0) continue;
 254     if (density[i]>maxdens){
 255       maxdens=density[i];
 256       indexmax=i;
 257     }
 258   }
 259   //
 260   //max dens point
 261   fTPCPoints[3] = maxdens;
 262   fTPCPoints[1] = indexmax;
 263   //
 264   // last point
 265   for (Int_t i=indexmax;i<160;i++){
 266     if (density[i]<0) continue;
 267     if (density[i]<maxdens/2.) {
 268       break;
 269     }
 270     fTPCPoints[2]=i;
 271   }
 272   //
 273   // first point
 274   for (Int_t i=indexmax;i>0;i--){
 275     if (density[i]<0) continue;
 276     if (density[i]<maxdens/2.) {
 277       break;
 278     }
 279     fTPCPoints[0]=i;
 280   }
 281   //
 282   // Density at the last 30 padrows
 283   //
 284   //
 285   nall  = 0;
 286   ngood = 0;
 287   for (Int_t i=159;i>0;i--){
 288     if (iclusters[i]==-1) continue; //dead zone
 289     nall++;
 290     if (iclusters[i]>0)   ngood++;
 291     if (nall>20) break;
 292   }
 293   fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
 294   //
 295   if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;
 296   //
 297   //
 298   // check TRDPoints
 299   /*
 300   nclusters=track->GetTRDclusters(iclusters);
 301   for (Int_t i=nclusters;i>0;i--){
 302
 303   }
 304   */
 305
 306
 307 }
 308
 309 //
 310 //
 311 void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /*par*/, Bool_t reconstructed)
 312 {
 313   //
 314   //
 315   //calculates derived variables
 316   //
 317   //
 318   UpdatePoints(&fESDTrack);
 319   fBestTOFmatch=1000;
 320   AliTrackReference * ref = &(info->fTrackRef);
 321   fTPCinR0[0] = info->fTrackRef.X();
 322   fTPCinR0[1] = info->fTrackRef.Y();
 323   fTPCinR0[2] = info->fTrackRef.Z();
 324   fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]*fTPCinR0[0]+fTPCinR0[1]*fTPCinR0[1]);
 325   fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
 326   //
 327   fTPCinP0[0] = ref->Px();
 328   fTPCinP0[1] = ref->Py();
 329   fTPCinP0[2] = ref->Pz();
 330   fTPCinP0[3] = ref->Pt();
 331   fTPCinP0[4] = ref->P();
 332   fDeltaP     = (ref->P()-info->fParticle.P())/info->fParticle.P();
 333   //
 334   //
 335   if (fTPCinP0[3]>0.0000001){
 336     //
 337     fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
 338     fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
 339   }
 340   //
 341   //
 342   fITSinP0[0]=info->fParticle.Px();
 343   fITSinP0[1]=info->fParticle.Py();
 344   fITSinP0[2]=info->fParticle.Pz();
 345   fITSinP0[3]=info->fParticle.Pt();
 346   //
 347   fITSinR0[0]=info->fParticle.Vx();
 348   fITSinR0[1]=info->fParticle.Vy();
 349   fITSinR0[2]=info->fParticle.Vz();
 350   fITSinR0[3] = TMath::Sqrt(fITSinR0[0]*fITSinR0[0]+fITSinR0[1]*fITSinR0[1]);
 351   fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
 352   //
 353   //
 354   if (fITSinP0[3]>0.0000001){
 355     fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
 356     fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
 357   }
 358   //
 359   for (Int_t i=0;i<4;i++) fStatus[i] =0;
 360   fReconstructed = kFALSE;
 361   fTPCOn = kFALSE;
 362   fITSOn = kFALSE;
 363   fTRDOn = kFALSE;
 364   if (reconstructed==kFALSE) return;
 365
 366   fLabels[0] = info->fLabel;
 367   fLabels[1] = info->fPrimPart;
 368   fReconstructed = kTRUE;
 369   fTPCOn = ((fESDTrack.GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
 370   fITSOn = ((fESDTrack.GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
 371   fTRDOn = ((fESDTrack.GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
 372   //
 373   //
 374   if ((fESDTrack.GetStatus()&AliESDtrack::kTPCrefit)>0){
 375     fStatus[1] =3;
 376   }
 377   else{
 378     if ((fESDTrack.GetStatus()&AliESDtrack::kTPCout)>0){
 379       fStatus[1] =2;
 380     }
 381     else{
 382       fStatus[1]=1;
 383     }
 384   }
 385   //
 386   if ((fESDTrack.GetStatus()&AliESDtrack::kITSout)>0){
 387     fStatus[0] =2;
 388   }
 389   else{
 390     if ((fESDTrack.GetStatus()&AliESDtrack::kITSrefit)>0){
 391       fStatus[0] =1;
 392     }
 393     else{
 394       fStatus[0]=0;
 395     }
 396   }
 397
 398   //
 399   //
 400   if ((fESDTrack.GetStatus()&AliESDtrack::kTRDrefit)>0){
 401     fStatus[2] =2;
 402   }
 403   else{
 404     if ((fESDTrack.GetStatus()&AliESDtrack::kTRDout)>0){
 405       fStatus[2] =1;
 406     }
 407   }
 408   if ((fESDTrack.GetStatus()&AliESDtrack::kTRDStop)>0){
 409     fStatus[2] =10;
 410   }
 411
 412   //
 413   //TOF
 414   //
 415   if (((fESDTrack.GetStatus()&AliESDtrack::kTOFout)>0)){
 416     //
 417     // best tof match
 418     Double_t times[5];
 419     fESDTrack.GetIntegratedTimes(times);
 420     for (Int_t i=0;i<5;i++){
 421       if ( TMath::Abs(fESDTrack.GetTOFsignal()-times[i]) <TMath::Abs(fBestTOFmatch) ){
 422         fBestTOFmatch = fESDTrack.GetTOFsignal()-times[i];
 423       }
 424     }
 425     Int_t toflabel[3];
 426     fESDTrack.GetTOFLabel(toflabel);
 427     Bool_t toffake=kTRUE;
 428     Bool_t tofdaughter=kFALSE;
 429     for (Int_t i=0;i<3;i++){
 430       if (toflabel[i]<0) continue;
 431       if (toflabel[i]== TMath::Abs(fESDTrack.GetLabel()))  toffake=kFALSE;
 432       if (toflabel[i]==info->fParticle.GetDaughter(0) || (toflabel[i]==info->fParticle.GetDaughter(1))) tofdaughter=kTRUE;  // decay product of original particle
 433       fStatus[3]=1;
 434     }
 435     if (toffake) fStatus[3] =3;       //total fake
 436     if (tofdaughter) fStatus[3]=2;    //fake because of decay
 437   }else{
 438     fStatus[3]=0;
 439   }
 440
 441
 442   if (fStatus[1]>0 &&info->fNTPCRef>0&&TMath::Abs(fTPCinP0[3])>0.0001){
 443     //TPC
 444     fESDTrack.GetInnerXYZ(fTPCinR1);
 445     fTPCinR1[3] = TMath::Sqrt(fTPCinR1[0]*fTPCinR1[0]+fTPCinR1[1]*fTPCinR1[1]);
 446     fTPCinR1[4] = TMath::ATan2(fTPCinR1[1],fTPCinR1[0]);
 447     fESDTrack.GetInnerPxPyPz(fTPCinP1);
 448     fTPCinP1[3] = TMath::Sqrt(fTPCinP1[0]*fTPCinP1[0]+fTPCinP1[1]*fTPCinP1[1]);
 449     fTPCinP1[4] = TMath::Sqrt(fTPCinP1[3]*fTPCinP1[3]+fTPCinP1[2]*fTPCinP1[2]);
 450     //
 451     //
 452     if (fTPCinP1[3]>0.0000001){
 453       fTPCAngle1[0] = TMath::ATan2(fTPCinP1[1],fTPCinP1[0]);
 454       fTPCAngle1[1] = TMath::ATan(fTPCinP1[2]/fTPCinP1[3]);
 455     }
 456     Double_t cov[15], param[5],x;
 457     fESDTrack.GetInnerExternalCovariance(cov);
 458     fESDTrack.GetInnerExternalParameters(x,param);
 459     if (x<50) return ;
 460     //
 461     fTPCDelta[0] = (fTPCinR0[4]-fTPCinR1[4])*fTPCinR1[3];  //delta rfi
 462     fTPCPools[0] = fTPCDelta[0]/TMath::Sqrt(cov[0]);
 463     fTPCDelta[1] = (fTPCinR0[2]-fTPCinR1[2]);              //delta z
 464     fTPCPools[1] = fTPCDelta[1]/TMath::Sqrt(cov[2]);
 465     fTPCDelta[2] = (fTPCAngle0[0]-fTPCAngle1[0]);
 466     fTPCPools[2] = fTPCDelta[2]/TMath::Sqrt(cov[5]);
 467     fTPCDelta[3] = (TMath::Tan(fTPCAngle0[1])-TMath::Tan(fTPCAngle1[1]));
 468     fTPCPools[3] = fTPCDelta[3]/TMath::Sqrt(cov[9]);
 469     fTPCDelta[4] = (fTPCinP0[3]-fTPCinP1[3]);
 470     Double_t sign = (param[4]>0)? 1.:-1;
 471     fSign =sign;
 472     fTPCPools[4] = sign*(1./fTPCinP0[3]-1./fTPCinP1[3])/TMath::Sqrt(TMath::Abs(cov[14]));
 473   }
 474   if (fITSOn){
 475     // ITS
 476     Double_t param[5],x;
 477     fESDTrack.GetExternalParameters(x,param);
 478     //    fESDTrack.GetConstrainedExternalParameters(x,param);
 479     Double_t cov[15];
 480     fESDTrack.GetExternalCovariance(cov);
 481     //fESDTrack.GetConstrainedExternalCovariance(cov);
 482     if (TMath::Abs(param[4])<0.0000000001) return;
 483
 484     fESDTrack.GetXYZ(fITSinR1);
 485     fESDTrack.GetPxPyPz(fITSinP1);
 486     fITSinP1[3] = TMath::Sqrt(fITSinP1[0]*fITSinP1[0]+fITSinP1[1]*fITSinP1[1]);
 487     //
 488     fITSinR1[3] = TMath::Sqrt(fITSinR1[0]*fITSinR1[0]+fITSinR1[1]*fITSinR1[1]);
 489     fITSinR1[4] = TMath::ATan2(fITSinR1[1],fITSinR1[0]);
 490     //
 491     //
 492     if (fITSinP1[3]>0.0000001){
 493       fITSAngle1[0] = TMath::ATan2(fITSinP1[1],fITSinP1[0]);
 494       fITSAngle1[1] = TMath::ATan(fITSinP1[2]/fITSinP1[3]);
 495     }
 496     //
 497     //
 498     fITSDelta[0] = (fITSinR0[4]-fITSinR1[4])*fITSinR1[3];  //delta rfi
 499     fITSPools[0] = fITSDelta[0]/TMath::Sqrt(cov[0]);
 500     fITSDelta[1] = (fITSinR0[2]-fITSinR1[2]);              //delta z
 501     fITSPools[1] = fITSDelta[1]/TMath::Sqrt(cov[2]);
 502     fITSDelta[2] = (fITSAngle0[0]-fITSAngle1[0]);
 503     fITSPools[2] = fITSDelta[2]/TMath::Sqrt(cov[5]);
 504     fITSDelta[3] = (TMath::Tan(fITSAngle0[1])-TMath::Tan(fITSAngle1[1]));
 505     fITSPools[3] = fITSDelta[3]/TMath::Sqrt(cov[9]);
 506     fITSDelta[4] = (fITSinP0[3]-fITSinP1[3]);
 507     Double_t sign = (param[4]>0) ? 1:-1;
 508     fSign = sign;
 509     fITSPools[4] = sign*(1./fITSinP0[3]-1./fITSinP1[3])/TMath::Sqrt(cov[14]);
 510   }
 511
 512 }
 513
 514
 515 void  AliESDRecV0Info::Update(Float_t vertex[3])
 516 {
 517
 518   if ( (fT1.fStatus[1]>0)&& (fT2.fStatus[1]>0)){
 519     Float_t distance1,distance2;
 520     Double_t xx[3],pp[3];
 521     //
 522     Double_t xd[3],pd[3],signd;
 523     Double_t xm[3],pm[3],signm;
 524     //
 525     //
 526     if (fT1.fITSOn&&fT2.fITSOn){
 527       for (Int_t i=0;i<3;i++){
 528         xd[i] = fT2.fITSinR1[i];
 529         pd[i] = fT2.fITSinP1[i];
 530         xm[i] = fT1.fITSinR1[i];
 531         pm[i] = fT1.fITSinP1[i];
 532       }
 533     }
 534     else{
 535
 536       for (Int_t i=0;i<3;i++){
 537         xd[i] = fT2.fTPCinR1[i];
 538         pd[i] = fT2.fTPCinP1[i];
 539         xm[i] = fT1.fTPCinR1[i];
 540         pm[i] = fT1.fTPCinP1[i];
 541       }
 542     }
 543     //
 544     //
 545     signd =  fT2.fSign<0 ? -1:1;
 546     signm =  fT1.fSign<0 ? -1:1;
 547
 548     AliHelix dhelix1(xd,pd,signd);
 549     dhelix1.GetMomentum(0,pp,0);
 550     dhelix1.Evaluate(0,xx);
 551     //
 552     //  Double_t x2[3],p2[3];
 553     //
 554     AliHelix mhelix(xm,pm,signm);
 555     //
 556     //find intersection linear
 557     //
 558     Double_t phase[2][2],radius[2];
 559     Int_t  points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
 560     Double_t delta1=10000,delta2=10000;
 561
 562     if (points==1){
 563       fRs[0] = TMath::Sqrt(radius[0]);
 564       fRs[1] = TMath::Sqrt(radius[0]);
 565     }
 566     if (points==2){
 567       fRs[0] =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
 568       fRs[1] =TMath::Max(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
 569     }
 570
 571     if (points>0){
 572       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 573       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 574       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 575     }
 576     if (points==2){
 577       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 578       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 579       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 580     }
 581     if (points==1){
 582       fRs[0] = TMath::Sqrt(radius[0]);
 583       fRs[1] = TMath::Sqrt(radius[0]);
 584       fDistMinR = delta1;
 585     }
 586     if (points==2){
 587       if (radius[0]<radius[1]){
 588         fRs[0] = TMath::Sqrt(radius[0]);
 589         fRs[1] = TMath::Sqrt(radius[1]);
 590         fDistMinR = delta1;
 591       }
 592       else{
 593         fRs[0] = TMath::Sqrt(radius[1]);
 594         fRs[1] = TMath::Sqrt(radius[0]);
 595         fDistMinR = delta2;
 596       }
 597     }
 598     //
 599     //
 600     distance1 = TMath::Min(delta1,delta2);
 601     //
 602     //find intersection parabolic
 603     //
 604     points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
 605     delta1=10000,delta2=10000;
 606
 607     if (points>0){
 608       dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 609     }
 610     if (points==2){
 611       dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 612     }
 613
 614     distance2 = TMath::Min(delta1,delta2);
 615     if (distance2>100) fDist2 =100;
 616     return;
 617     if (delta1<delta2){
 618       //get V0 info
 619       dhelix1.Evaluate(phase[0][0],fXr);
 620       dhelix1.GetMomentum(phase[0][0],fPdr);
 621       mhelix.GetMomentum(phase[0][1],fPm);
 622       dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
 623       fRr = TMath::Sqrt(radius[0]);
 624     }
 625     else{
 626       dhelix1.Evaluate(phase[1][0],fXr);
 627       dhelix1.GetMomentum(phase[1][0], fPdr);
 628       mhelix.GetMomentum(phase[1][1], fPm);
 629       dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
 630       fRr = TMath::Sqrt(radius[1]);
 631     }
 632     fDist1 = TMath::Sqrt(distance1);
 633     fDist2 = TMath::Sqrt(distance2);
 634
 635     if (fDist2<10.5){
 636       Double_t x,alpha,param[5],cov[15];
 637       //
 638       fT1.fESDTrack.GetInnerExternalParameters(x,param);
 639       fT1.fESDTrack.GetInnerExternalCovariance(cov);
 640       alpha = fT1.fESDTrack.GetInnerAlpha();
 641       AliExternalTrackParam paramm(x,alpha,param,cov);
 642       //
 643       fT2.fESDTrack.GetInnerExternalParameters(x,param);
 644       fT2.fESDTrack.GetInnerExternalCovariance(cov);
 645       alpha = fT2.fESDTrack.GetInnerAlpha();
 646       AliExternalTrackParam paramd(x,alpha,param,cov);
 647     }
 648     //
 649     //
 650
 651     Float_t v[3] = {fXr[0]-vertex[0],fXr[1]-vertex[1],fXr[2]-vertex[2]};
 652     Float_t p[3] = {fPdr[0]+fPm[0], fPdr[1]+fPm[1],fPdr[2]+fPm[2]};
 653
 654     Float_t vnorm2 = v[0]*v[0]+v[1]*v[1];
 655     Float_t vnorm3 = TMath::Sqrt(v[2]*v[2]+vnorm2);
 656     vnorm2 = TMath::Sqrt(vnorm2);
 657     Float_t pnorm2 = p[0]*p[0]+p[1]*p[1];
 658     Float_t pnorm3 = TMath::Sqrt(p[2]*p[2]+pnorm2);
 659     pnorm2 = TMath::Sqrt(pnorm2);
 660
 661     fPointAngleFi = (v[0]*p[0]+v[1]*p[1])/(vnorm2*pnorm2);
 662     fPointAngleTh = (v[2]*p[2]+vnorm2*pnorm2)/(vnorm3*pnorm3);
 663     fPointAngle   = (v[0]*p[0]+v[1]*p[1]+v[2]*p[2])/(vnorm3*pnorm3);
 664   }
 665 }
 666
 667 ////
 668 void  AliESDRecKinkInfo::Update()
 669 {
 670
 671   if ( (fT1.fTPCOn)&& (fT2.fTPCOn)){
 672     //
 673     // IF BOTH RECONSTRUCTED
 674     Float_t distance1,distance2;
 675     Double_t xx[3],pp[3];
 676     //
 677     Double_t xd[3],pd[3],signd;
 678     Double_t xm[3],pm[3],signm;
 679     for (Int_t i=0;i<3;i++){
 680       xd[i] = fT2.fTPCinR1[i];
 681       pd[i] = fT2.fTPCinP1[i];
 682       xm[i] = fT1.fTPCinR1[i];
 683       pm[i] = fT1.fTPCinP1[i];
 684     }
 685     signd =  fT2.fSign<0 ? -1:1;
 686     signm =  fT1.fSign<0 ? -1:1;
 687
 688     AliHelix dhelix1(xd,pd,signd);
 689     dhelix1.GetMomentum(0,pp,0);
 690     dhelix1.Evaluate(0,xx);
 691     //
 692     //  Double_t x2[3],p2[3];
 693     //
 694     AliHelix mhelix(xm,pm,signm);
 695     //
 696     //find intersection linear
 697     //
 698     Double_t phase[2][2],radius[2];
 699     Int_t  points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
 700     Double_t delta1=10000,delta2=10000;
 701
 702     if (points==1){
 703       fMinR = TMath::Sqrt(radius[0]);
 704     }
 705     if (points==2){
 706       fMinR =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
 707     }
 708
 709     if (points>0){
 710       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 711       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 712       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 713     }
 714     if (points==2){
 715       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 716       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 717       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 718     }
 719     if (points==1){
 720       fMinR = TMath::Sqrt(radius[0]);
 721       fDistMinR = delta1;
 722     }
 723     if (points==2){
 724       if (radius[0]<radius[1]){
 725         fMinR = TMath::Sqrt(radius[0]);
 726         fDistMinR = delta1;
 727       }
 728       else{
 729         fMinR = TMath::Sqrt(radius[1]);
 730         fDistMinR = delta2;
 731       }
 732     }
 733     //
 734     //
 735     distance1 = TMath::Min(delta1,delta2);
 736     //
 737     //find intersection parabolic
 738     //
 739     points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
 740     delta1=10000,delta2=10000;
 741
 742     if (points>0){
 743       dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
 744     }
 745     if (points==2){
 746       dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
 747     }
 748
 749     distance2 = TMath::Min(delta1,delta2);
 750     if (delta1<delta2){
 751       //get V0 info
 752       dhelix1.Evaluate(phase[0][0],fXr);
 753       dhelix1.GetMomentum(phase[0][0],fPdr);
 754       mhelix.GetMomentum(phase[0][1],fPm);
 755       dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
 756       fRr = TMath::Sqrt(radius[0]);
 757     }
 758     else{
 759       dhelix1.Evaluate(phase[1][0],fXr);
 760       dhelix1.GetMomentum(phase[1][0], fPdr);
 761       mhelix.GetMomentum(phase[1][1], fPm);
 762       dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
 763       fRr = TMath::Sqrt(radius[1]);
 764     }
 765     fDist1 = TMath::Sqrt(distance1);
 766     fDist2 = TMath::Sqrt(distance2);
 767
 768     if (fDist2<10.5){
 769       Double_t x,alpha,param[5],cov[15];
 770       //
 771       fT1.fESDTrack.GetInnerExternalParameters(x,param);
 772       fT1.fESDTrack.GetInnerExternalCovariance(cov);
 773       alpha = fT1.fESDTrack.GetInnerAlpha();
 774       AliExternalTrackParam paramm(x,alpha,param,cov);
 775       //
 776       fT2.fESDTrack.GetInnerExternalParameters(x,param);
 777       fT2.fESDTrack.GetInnerExternalCovariance(cov);
 778       alpha = fT2.fESDTrack.GetInnerAlpha();
 779       AliExternalTrackParam paramd(x,alpha,param,cov);
 780       /*
 781       AliESDkink kink;
 782       kink.Update(&paramm,&paramd);
 783       //      kink.Dump();
 784       Double_t diff  = kink.fRr-fRr;
 785       Double_t diff2 = kink.fDist2-fDist2;
 786       printf("Diff\t%f\t%f\n",diff,diff2);
 787       */
 788     }
 789
 790     //
 791     //
 792   }
 793
 794 }
 795
 796
 797 ////////////////////////////////////////////////////////////////////////
 798 ESDCmpTr::ESDCmpTr()
 799 {
 800   Reset();
 801 }
 802
 803 ////////////////////////////////////////////////////////////////////////
 804 ESDCmpTr::ESDCmpTr(const char* fnGenTracks,
 805                    const char* fnCmp,
 806                    const char* fnGalice, Int_t direction,
 807                    Int_t nEvents, Int_t firstEvent)
 808 {
 809   Reset();
 810   //  fFnGenTracks = fnGenTracks;
 811   //  fFnCmp = fnCmp;
 812   sprintf(fFnGenTracks,"%s",fnGenTracks);
 813   sprintf(fFnCmp,"%s",fnCmp);
 814
 815   fFirstEventNr = firstEvent;
 816   fEventNr = firstEvent;
 817   fNEvents = nEvents;
 818   fDirection = direction;
 819   //
 820   fLoader = AliRunLoader::Open(fnGalice);
 821   if (gAlice){
 822     //delete gAlice->GetRunLoader();
 823     delete gAlice;
 824     gAlice = 0x0;
 825   }
 826   if (fLoader->LoadgAlice()){
 827     cerr<<"Error occured while l"<<endl;
 828   }
 829   Int_t nall = fLoader->GetNumberOfEvents();
 830   if (nEvents==0) {
 831     nEvents =nall;
 832     fNEvents=nall;
 833     fFirstEventNr=0;
 834   }
 835
 836   if (nall<=0){
 837     cerr<<"no events available"<<endl;
 838     fEventNr = 0;
 839     return;
 840   }
 841   if (firstEvent+nEvents>nall) {
 842     fEventNr = nall-firstEvent;
 843     cerr<<"restricted number of events availaible"<<endl;
 844   }
 845   AliMagF * magf = gAlice->Field();
 846   AliTracker::SetFieldMap(magf,0);
 847
 848 }
 849
 850
 851 ////////////////////////////////////////////////////////////////////////
 852 ESDCmpTr::~ESDCmpTr()
 853 {
 854   if (fLoader) {
 855     delete fLoader;
 856   }
 857 }
 858
 859 //////////////////////////////////////////////////////////////
 860 Int_t ESDCmpTr::SetIO()
 861 {
 862   //
 863   //
 864   CreateTreeCmp();
 865   if (!fTreeCmp) return 1;
 866   fParamTPC = GetTPCParam();
 867   //
 868   if (!ConnectGenTree()) {
 869     cerr<<"Cannot connect tree with generated tracks"<<endl;
 870     return 1;
 871   }
 872   return 0;
 873 }
 874
 875 //////////////////////////////////////////////////////////////
 876
 877 Int_t ESDCmpTr::SetIO(Int_t eventNr)
 878 {
 879   //
 880   //
 881   // SET INPUT
 882   //
 883   TFile f("AliESDs.root");
 884   //
 885
 886   TTree* tree = (TTree*) f.Get("esdTree");
 887   if (!tree) {
 888     Char_t ename[100];
 889     sprintf(ename,"%d",eventNr);
 890     fEvent = (AliESD*)f.Get(ename);
 891     if (!fEvent){
 892       sprintf(ename,"ESD%d",eventNr);
 893       fEvent = (AliESD*)f.Get(ename);
 894     }
 895   }
 896   else{
 897     tree->SetBranchAddress("ESD", &fEvent);
 898     tree->GetEntry(eventNr);
 899   }
 900
 901
 902   /*
 903   Char_t ename[100];
 904   sprintf(ename,"%d",eventNr);
 905   fEvent = (AliESD*)f.Get(ename);
 906   if (!fEvent){
 907     sprintf(ename,"ESD%d",eventNr);
 908     fEvent = (AliESD*)f.Get(ename);
 909   }
 910
 911   TTree* tree = (TTree*) f.Get("esdTree");
 912   if (!tree) {
 913     Error("CheckESD", "no ESD tree found");
 914     return kFALSE;
 915   }
 916   tree->SetBranchAddress("ESD", &fEvent);
 917   tree->GetEntry(eventNr);
 918   */
 919
 920   if (!fEvent) return 1;
 921
 922   return 0;
 923 }
 924
 925
 926
 927 ////////////////////////////////////////////////////////////////////////
 928 void ESDCmpTr::Reset()
 929 {
 930   fEventNr = 0;
 931   fNEvents = 0;
 932   fTreeCmp = 0;
 933   fTreeCmpKinks =0;
 934   fTreeCmpV0 =0;
 935   //  fFnCmp = "cmpTracks.root";
 936   fFileGenTracks = 0;
 937   fDebug = 0;
 938   //
 939   fParamTPC = 0;
 940   fEvent =0;
 941 }
 942
 943 ////////////////////////////////////////////////////////////////////////
 944 Int_t ESDCmpTr::Exec(Int_t nEvents, Int_t firstEventNr)
 945 {
 946   fNEvents = nEvents;
 947   fFirstEventNr = firstEventNr;
 948   return Exec();
 949 }
 950
 951 ////////////////////////////////////////////////////////////////////////
 952 Int_t ESDCmpTr::Exec()
 953 {
 954   TStopwatch timer;
 955   timer.Start();
 956
 957   if (SetIO()==1)
 958     return 1;
 959
 960   fNextTreeGenEntryToRead = 0;
 961   fNextKinkToRead = 0;
 962   fNextV0ToRead   =0;
 963   cerr<<"fFirstEventNr, fNEvents: "<<fFirstEventNr<<" "<<fNEvents<<endl;
 964   for (Int_t eventNr = fFirstEventNr; eventNr < fFirstEventNr+fNEvents;
 965        eventNr++) {
 966     fEventNr = eventNr;
 967     SetIO(fEventNr);
 968     fNParticles = gAlice->GetEvent(fEventNr);
 969
 970     fIndexRecTracks = new Short_t[fNParticles*20];  //write at maximum 4 tracks corresponding to particle
 971     fIndexRecKinks  = new Short_t[fNParticles*20];  //write at maximum 20 tracks corresponding to particle
 972     fIndexRecV0  = new Short_t[fNParticles*20];  //write at maximum 20 tracks corresponding to particle
 973
 974     fFakeRecTracks = new Short_t[fNParticles];
 975     fMultiRecTracks = new Short_t[fNParticles];
 976     fMultiRecKinks = new Short_t[fNParticles];
 977     fMultiRecV0 = new Short_t[fNParticles];
 978
 979     for (Int_t i = 0; i<fNParticles; i++) {
 980       for (Int_t j=0;j<20;j++){
 981         fIndexRecTracks[20*i+j] = -1;
 982         fIndexRecKinks[20*i+j]  = -1;
 983         fIndexRecV0[20*i+j]  = -1;
 984       }
 985       fFakeRecTracks[i] = 0;
 986       fMultiRecTracks[i] = 0;
 987       fMultiRecKinks[i] = 0;
 988       fMultiRecV0[i] = 0;
 989     }
 990
 991     cout<<"Start to process event "<<fEventNr<<endl;
 992     cout<<"\tfNParticles = "<<fNParticles<<endl;
 993     if (fDebug>2) cout<<"\tStart loop over TreeT"<<endl;
 994     if (TreeTLoop()>0) return 1;
 995
 996     if (fDebug>2) cout<<"\tStart loop over tree genTracks"<<endl;
 997     if (TreeGenLoop(eventNr)>0) return 1;
 998     BuildKinkInfo0(eventNr);
 999     BuildV0Info(eventNr);
1000     fRecArray->Delete();
1001
1002     if (fDebug>2) cout<<"\tEnd loop over tree genTracks"<<endl;
1003
1004     delete [] fIndexRecTracks;
1005     delete [] fIndexRecKinks;
1006     delete [] fIndexRecV0;
1007     delete [] fFakeRecTracks;
1008     delete [] fMultiRecTracks;
1009     delete [] fMultiRecKinks;
1010     delete [] fMultiRecV0;
1011   }
1012
1013   CloseOutputFile();
1014
1015   cerr<<"Exec finished"<<endl;
1016   timer.Stop();
1017   timer.Print();
1018   return 0;
1019
1020 }
1021 ////////////////////////////////////////////////////////////////////////
1022 Bool_t ESDCmpTr::ConnectGenTree()
1023 {
1024 //
1025 // connect all branches from the genTracksTree
1026 // use the same variables as for the new cmp tree, it may work
1027 //
1028   fFileGenTracks = TFile::Open(fFnGenTracks,"READ");
1029   if (!fFileGenTracks) {
1030     cerr<<"Error in ConnectGenTree: cannot open file "<<fFnGenTracks<<endl;
1031     return kFALSE;
1032   }
1033   fTreeGenTracks = (TTree*)fFileGenTracks->Get("genTracksTree");
1034   if (!fTreeGenTracks) {
1035     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
1036         <<fFnGenTracks<<endl;
1037     return kFALSE;
1038   }
1039   //
1040   fMCInfo = new AliMCInfo;
1041   fTreeGenTracks->SetBranchAddress("MC",&fMCInfo);
1042   //
1043   //
1044   fTreeGenKinks = (TTree*)fFileGenTracks->Get("genKinksTree");
1045   if (!fTreeGenKinks) {
1046     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
1047         <<fFnGenTracks<<endl;
1048     //return kFALSE;
1049   }
1050   else{
1051     fGenKinkInfo = new AliGenKinkInfo;
1052     fTreeGenKinks->SetBranchAddress("MC",&fGenKinkInfo);
1053   }
1054
1055   fTreeGenV0 = (TTree*)fFileGenTracks->Get("genV0Tree");
1056   if (!fTreeGenV0) {
1057     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
1058         <<fFnGenTracks<<endl;
1059     //return kFALSE;
1060   }
1061   else{
1062     fGenV0Info = new AliGenV0Info;
1063     fTreeGenV0->SetBranchAddress("MC",&fGenV0Info);
1064   }
1065   //
1066   if (fDebug > 1) {
1067     cout<<"Number of gen. tracks with TR: "<<fTreeGenTracks->GetEntries()<<endl;
1068   }
1069   return kTRUE;
1070 }
1071
1072
1073 ////////////////////////////////////////////////////////////////////////
1074 void ESDCmpTr::CreateTreeCmp()
1075 {
1076   fFileCmp = TFile::Open(fFnCmp,"RECREATE");
1077   if (!fFileCmp) {
1078     cerr<<"Error in CreateTreeCmp: cannot open file "<<fFnCmp<<endl;
1079     return;
1080   }
1081   //
1082   //
1083   fTreeCmp    = new TTree("ESDcmpTracks","ESDcmpTracks");
1084   fMCInfo = new AliMCInfo;
1085   fRecInfo = new AliESDRecInfo;
1086   AliESDtrack * esdTrack = new AliESDtrack;
1087   //  AliITStrackMI * itsTrack = new AliITStrackMI;
1088   fTreeCmp->Branch("MC","AliMCInfo",&fMCInfo,256000);
1089   fTreeCmp->Branch("RC","AliESDRecInfo",&fRecInfo,256000);
1090   //  fTreeCmp->Branch("fESDTrack","AliESDtrack",&esdTrack);
1091   //  fTreeCmp->Branch("ITS","AliITStrackMI",&itsTrack);
1092   delete esdTrack;
1093   //
1094   //
1095   fTreeCmpKinks    = new TTree("ESDcmpKinks","ESDcmpKinks");
1096   fGenKinkInfo     = new AliGenKinkInfo;
1097   fRecKinkInfo     = new AliESDRecKinkInfo;
1098   fTreeCmpKinks->Branch("MC.","AliGenKinkInfo",&fGenKinkInfo,256000);
1099   fTreeCmpKinks->Branch("RC.","AliESDRecKinkInfo",&fRecKinkInfo,256000);
1100   //
1101   //
1102   fTreeCmpV0       = new TTree("ESDcmpV0","ESDcmpV0");
1103   fGenV0Info     = new AliGenV0Info;
1104   fRecV0Info     = new AliESDRecV0Info;
1105   fTreeCmpV0->Branch("MC.","AliGenV0Info",   &fGenV0Info,256000);
1106   fTreeCmpV0->Branch("RC.","AliESDRecV0Info",&fRecV0Info,256000);
1107   //
1108   fTreeCmp->AutoSave();
1109   fTreeCmpKinks->AutoSave();
1110   fTreeCmpV0->AutoSave();
1111 }
1112 ////////////////////////////////////////////////////////////////////////
1113 void ESDCmpTr::CloseOutputFile()
1114 {
1115   if (!fFileCmp) {
1116     cerr<<"File "<<fFnCmp<<" not found as an open file."<<endl;
1117     return;
1118   }
1119   fFileCmp->cd();
1120   fTreeCmp->Write();
1121   delete fTreeCmp;
1122
1123   fFileCmp->Close();
1124   delete fFileCmp;
1125   return;
1126 }
1127 ////////////////////////////////////////////////////////////////////////
1128
1129 TVector3 ESDCmpTr::TR2Local(AliTrackReference *trackRef,
1130                             AliTPCParam *paramTPC) {
1131
1132   Float_t x[3] = { trackRef->X(),trackRef->Y(),trackRef->Z()};
1133   Int_t index[4];
1134   paramTPC->Transform0to1(x,index);
1135   paramTPC->Transform1to2(x,index);
1136   return TVector3(x);
1137 }
1138 ////////////////////////////////////////////////////////////////////////
1139
1140 Int_t ESDCmpTr::TreeTLoop()
1141 {
1142   //
1143   // loop over all ESD reconstructed tracks and store info in memory
1144   //
1145   // + loop over all reconstructed kinks
1146   TStopwatch  timer;
1147   timer.Start();
1148   //
1149   Int_t nEntries = (Int_t)fEvent->GetNumberOfTracks();
1150   Int_t nKinks = (Int_t) fEvent->GetNumberOfKinks();
1151   Int_t nV0MIs = (Int_t) fEvent->GetNumberOfV0MIs();
1152   fSignedKinks = new Short_t[nKinks];
1153   fSignedV0    = new Short_t[nV0MIs];
1154   //
1155   // load kinks to the memory
1156   for (Int_t i=0; i<nKinks;i++){
1157     AliESDkink * kink =fEvent->GetKink(i);
1158     fSignedKinks[i]=0;
1159     if (kink->fStatus<0) continue;
1160   }
1161   //
1162   for (Int_t i=0; i<nV0MIs;i++){
1163     AliESDV0MI * v0MI =fEvent->GetV0MI(i);
1164     fSignedV0[i]=0;
1165     if (v0MI->fStatus<0) continue;
1166   }
1167
1168   //
1169   //
1170   AliESDtrack * track=0;
1171   for (Int_t iEntry=0; iEntry<nEntries;iEntry++){
1172     //track = (AliESDtrack*)fTracks->UncheckedAt(iEntry);
1173     track = (AliESDtrack*)fEvent->GetTrack(iEntry);
1174     //
1175     Int_t label = track->GetLabel();
1176     Int_t absLabel = abs(label);
1177     if (absLabel < fNParticles) {
1178       //      fIndexRecTracks[absLabel] =  iEntry;
1179       if (label < 0) fFakeRecTracks[absLabel]++;
1180       if (fMultiRecTracks[absLabel]>0){
1181         if (fMultiRecTracks[absLabel]<20)
1182           fIndexRecTracks[absLabel*20+fMultiRecTracks[absLabel]] =  iEntry;
1183       }
1184       else
1185         fIndexRecTracks[absLabel*20] =  iEntry;
1186       fMultiRecTracks[absLabel]++;
1187     }
1188   }
1189   // sort reconstructed kinks
1190   //
1191   AliESDkink * kink=0;
1192   for (Int_t iEntry=0; iEntry<nKinks;iEntry++){
1193     kink = (AliESDkink*)fEvent->GetKink(iEntry);
1194     if (!kink) continue;
1195     //
1196     Int_t label0 = TMath::Abs(kink->fLab[0]);
1197     Int_t label1 = TMath::Abs(kink->fLab[1]);
1198     Int_t absLabel = TMath::Min(label0,label1);
1199     if (absLabel < fNParticles) {
1200       if (fMultiRecKinks[absLabel]>0){
1201         if (fMultiRecKinks[absLabel]<20)
1202           fIndexRecKinks[absLabel*20+fMultiRecKinks[absLabel]] =  iEntry;
1203       }
1204       else
1205         fIndexRecKinks[absLabel*20] =  iEntry;
1206       fMultiRecKinks[absLabel]++;
1207     }
1208   }
1209   // --sort reconstructed V0
1210   //
1211   AliESDV0MI * v0MI=0;
1212   for (Int_t iEntry=0; iEntry<nV0MIs;iEntry++){
1213     v0MI = fEvent->GetV0MI(iEntry);
1214     if (!v0MI) continue;
1215     //
1216     //    Int_t label0 = TMath::Abs(v0MI->fLab[0]);
1217     //Int_t label1 = TMath::Abs(v0MI->fLab[1]);
1218     //
1219     for (Int_t i=0;i<2;i++){
1220       // Int_t absLabel = TMath::Min(label0,label1);
1221       Int_t absLabel =  TMath::Abs(v0MI->fLab[i]);
1222       if (absLabel < fNParticles) {
1223         if (fMultiRecV0[absLabel]>0){
1224           if (fMultiRecV0[absLabel]<20)
1225             fIndexRecV0[absLabel*20+fMultiRecV0[absLabel]] =  iEntry;
1226         }
1227         else
1228           fIndexRecV0[absLabel*20] =  iEntry;
1229         fMultiRecV0[absLabel]++;
1230       }
1231     }
1232   }
1233
1234
1235   printf("Time spended in TreeTLoop\n");
1236   timer.Print();
1237
1238   if (fDebug > 2) cerr<<"end of TreeTLoop"<<endl;
1239   return 0;
1240 }
1241
1242 ////////////////////////////////////////////////////////////////////////
1243 Int_t ESDCmpTr::TreeGenLoop(Int_t eventNr)
1244 {
1245 //
1246 // loop over all entries for a given event, find corresponding
1247 // rec. track and store in the fTreeCmp
1248 //
1249   TStopwatch timer;
1250   timer.Start();
1251   Int_t entry = fNextTreeGenEntryToRead;
1252   Double_t nParticlesTR = fTreeGenTracks->GetEntriesFast();
1253   cerr<<"fNParticles, nParticlesTR, fNextTreeGenEntryToRead: "<<fNParticles<<" "
1254       <<nParticlesTR<<" "<<fNextTreeGenEntryToRead<<endl;
1255   TBranch * branch = fTreeCmp->GetBranch("RC");
1256   branch->SetAddress(&fRecInfo); // set all pointers
1257   fRecArray = new TObjArray(fNParticles);
1258
1259   while (entry < nParticlesTR) {
1260     fTreeGenTracks->GetEntry(entry);
1261     entry++;
1262     if (eventNr < fMCInfo->fEventNr) continue;
1263     if (eventNr > fMCInfo->fEventNr) continue;;
1264     //
1265     fNextTreeGenEntryToRead = entry-1;
1266     if (fDebug > 2 && fMCInfo->fLabel < 10) {
1267       cerr<<"Fill track with a label "<<fMCInfo->fLabel<<endl;
1268     }
1269     //    if (fMCInfo->fNTPCRef<1) continue; // not TPCref
1270     //
1271     fRecInfo->Reset();
1272     AliESDtrack * track=0;
1273     fRecInfo->fReconstructed =0;
1274     TVector3 local = TR2Local(&(fMCInfo->fTrackRef),fParamTPC);
1275     local.GetXYZ(fRecInfo->fTRLocalCoord);
1276     //
1277     if (fIndexRecTracks[fMCInfo->fLabel*20] >= 0) {
1278       //track= (AliESDtrack*)fTracks->UncheckedAt(fIndexRecTracks[fMCInfo->fLabel*4]);
1279       track= (AliESDtrack*)fEvent->GetTrack(fIndexRecTracks[fMCInfo->fLabel*20]);
1280       //
1281       //
1282       // find nearest track if multifound
1283       //Int_t sign = Int_t(track->GetSign()*fMCInfo->fCharge);
1284       //
1285       Int_t status = 0;
1286       if  ((track->GetStatus()&AliESDtrack::kITSrefit)>0) status++;
1287       if  ((track->GetStatus()&AliESDtrack::kTPCrefit)>0) status++;
1288       if  ((track->GetStatus()&AliESDtrack::kTRDrefit)>0) status++;
1289
1290       //
1291       if (fIndexRecTracks[fMCInfo->fLabel*20+1]>0){
1292         //
1293         Double_t p[3];
1294         track->GetInnerPxPyPz(p);
1295         Float_t maxp = p[0]*p[0]+p[1]*p[1]+p[2]*p[2];
1296         //
1297         for (Int_t i=1;i<20;i++){
1298           if (fIndexRecTracks[fMCInfo->fLabel*20+i]>=0){
1299             AliESDtrack * track2 = (AliESDtrack*)fEvent->GetTrack(fIndexRecTracks[fMCInfo->fLabel*20+i]);
1300             if (!track2) continue;
1301             //Int_t sign2 = track->GetSign()*fMCInfo->fCharge; //
1302             //if (sign2<0) continue;
1303             track2->GetInnerPxPyPz(p);
1304             Float_t mom = p[0]*p[0]+p[1]*p[1]+p[2]*p[2];
1305             /*
1306             if (sign<0){
1307               sign = sign2;
1308               track = track2;
1309               maxp = mom;
1310               continue;
1311             }
1312             */
1313             //
1314             Int_t status2 = 0;
1315             if  ((track2->GetStatus()&AliESDtrack::kITSrefit)>0) status2++;
1316             if  ((track2->GetStatus()&AliESDtrack::kTPCrefit)>0) status2++;
1317             if  ((track2->GetStatus()&AliESDtrack::kTRDrefit)>0) status2++;
1318             if (status2<status) continue;
1319             //
1320             if (mom<maxp) continue;
1321             maxp = mom;
1322             track = track2;
1323             //
1324           }
1325         }
1326       }
1327       //
1328       fRecInfo->fESDTrack =*track;
1329       if (track->GetITStrack())
1330         fRecInfo->fITStrack = *((AliITStrackMI*)track->GetITStrack());
1331       else{
1332         fRecInfo->fITStrack = *track;
1333       }
1334       if (track->GetTRDtrack()){
1335         fRecInfo->fTRDtrack = *((AliTRDtrack*)track->GetTRDtrack());
1336       }
1337       else{
1338         fRecInfo->fTRDtrack.SetdEdx(-1);
1339       }
1340       fRecInfo->fReconstructed = 1;
1341       fRecInfo->fFake     = fFakeRecTracks[fMCInfo->fLabel];
1342       fRecInfo->fMultiple = fMultiRecTracks[fMCInfo->fLabel];
1343       //
1344       fRecInfo->Update(fMCInfo,fParamTPC,kTRUE);
1345     }
1346     else{
1347       fRecInfo->Update(fMCInfo,fParamTPC,kFALSE);
1348     }
1349     fRecArray->AddAt(new AliESDRecInfo(*fRecInfo),fMCInfo->fLabel);
1350     fTreeCmp->Fill();
1351   }
1352   fTreeCmp->AutoSave();
1353   //fTracks->Delete();
1354   printf("Time spended in TreeGenLoop\n");
1355   timer.Print();
1356   if (fDebug > 2) cerr<<"end of TreeGenLoop"<<endl;
1357
1358   return 0;
1359 }
1360
1361
1362
1363 ////////////////////////////////////////////////////////////////////////
1364 ////////////////////////////////////////////////////////////////////////
1365 ////////////////////////////////////////////////////////////////////////
1366 Int_t ESDCmpTr::BuildKinkInfo0(Int_t eventNr)
1367 {
1368 //
1369 // loop over all entries for a given event, find corresponding
1370 // rec. track and store in the fTreeCmp
1371 //
1372   TStopwatch timer;
1373   timer.Start();
1374   Int_t entry = fNextKinkToRead;
1375   Double_t nParticlesTR = fTreeGenKinks->GetEntriesFast();
1376   cerr<<"fNParticles, nParticlesTR, fNextKinkToRead: "<<fNParticles<<" "
1377       <<nParticlesTR<<" "<<fNextKinkToRead<<endl;
1378   //
1379   TBranch * branch = fTreeCmpKinks->GetBranch("RC.");
1380   branch->SetAddress(&fRecKinkInfo); // set all pointers
1381
1382   //
1383   while (entry < nParticlesTR) {
1384     fTreeGenKinks->GetEntry(entry);
1385     entry++;
1386     if (eventNr < fGenKinkInfo->fMCm.fEventNr) continue;
1387     if (eventNr > fGenKinkInfo->fMCm.fEventNr) continue;;
1388     //
1389     fNextKinkToRead = entry-1;
1390     //
1391     //
1392     AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(fGenKinkInfo->fMCm.fLabel);
1393     AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(fGenKinkInfo->fMCd.fLabel);
1394     fRecKinkInfo->fT1 = (*fRecInfo1);
1395     fRecKinkInfo->fT2 = (*fRecInfo2);
1396     fRecKinkInfo->fStatus =0;
1397     if (fRecInfo1 && fRecInfo1->fTPCOn) fRecKinkInfo->fStatus+=1;
1398     if (fRecInfo2 && fRecInfo2->fTPCOn) fRecKinkInfo->fStatus+=2;
1399     if (fRecKinkInfo->fStatus==3&&fRecInfo1->fSign!=fRecInfo2->fSign) fRecKinkInfo->fStatus*=-1;
1400
1401     if (fRecKinkInfo->fStatus==3){
1402       fRecKinkInfo->Update();
1403     }
1404     Int_t label =  TMath::Min(fGenKinkInfo->fMCm.fLabel,fGenKinkInfo->fMCd.fLabel);
1405     Int_t label2 = TMath::Max(fGenKinkInfo->fMCm.fLabel,fGenKinkInfo->fMCd.fLabel);
1406
1407     AliESDkink *kink=0;
1408     fRecKinkInfo->fRecStatus   =0;
1409     fRecKinkInfo->fMultiple    = fMultiRecKinks[label];
1410     fRecKinkInfo->fKinkMultiple=0;
1411     //
1412     if (fMultiRecKinks[label]>0){
1413
1414       //      for (Int_t j=0;j<TMath::Min(fMultiRecKinks[label],100);j++){
1415       for (Int_t j=TMath::Min(fMultiRecKinks[label],Short_t(20))-1;j>=0;j--){
1416         Int_t index = fIndexRecKinks[label*20+j];
1417         //AliESDkink *kink2  = (AliESDkink*)fKinks->At(index);
1418         AliESDkink *kink2  = (AliESDkink*)fEvent->GetKink(index);
1419         if (TMath::Abs(kink2->fLab[0])==label &&TMath::Abs(kink2->fLab[1])==label2) {
1420           fRecKinkInfo->fKinkMultiple++;
1421           fSignedKinks[index]=1;
1422           Int_t c0=0;
1423           if (kink){
1424             //      if (kink->fTRDOn) c0++;
1425             //if (kink->fITSOn) c0++;
1426             if (kink->GetStatus(2)>0) c0++;
1427             if (kink->GetStatus(0)>0) c0++;
1428           }
1429           Int_t c2=0;
1430           //      if (kink2->fTRDOn) c2++;
1431           //if (kink2->fITSOn) c2++;
1432           if (kink2->GetStatus(2)>0) c2++;
1433           if (kink2->GetStatus(0)>0) c2++;
1434
1435           if (c2<c0) continue;
1436           kink =kink2;
1437         }
1438         if (TMath::Abs(kink2->fLab[1])==label &&TMath::Abs(kink2->fLab[0])==label2) {
1439           fRecKinkInfo->fKinkMultiple++;
1440           fSignedKinks[index]=1;
1441           Int_t c0=0;
1442           if (kink){
1443             //if (kink->fTRDOn) c0++;
1444             //if (kink->fITSOn) c0++;
1445             if (kink->GetStatus(2)>0) c0++;
1446             if (kink->GetStatus(0)>0) c0++;
1447
1448           }
1449           Int_t c2=0;
1450           //      if (kink2->fTRDOn) c2++;
1451           //if (kink2->fITSOn) c2++;
1452           if (kink2->GetStatus(2)>0) c2++;
1453           if (kink2->GetStatus(0)>0) c2++;
1454
1455           if (c2<c0) continue;
1456           kink =kink2;
1457         }
1458       }
1459     }
1460     if (kink){
1461       fRecKinkInfo->fKink = *kink;
1462       fRecKinkInfo->fRecStatus=1;
1463     }
1464     fTreeCmpKinks->Fill();
1465   }
1466   //  Int_t nkinks = fKinks->GetEntriesFast();
1467   Int_t nkinks = fEvent->GetNumberOfKinks();
1468   for (Int_t i=0;i<nkinks;i++){
1469     if (fSignedKinks[i]==0){
1470       //      AliESDkink *kink  = (AliESDkink*)fKinks->At(i);
1471       AliESDkink *kink  = (AliESDkink*)fEvent->GetKink(i);
1472       if (!kink) continue;
1473       //
1474       fRecKinkInfo->fKink = *kink;
1475       fRecKinkInfo->fRecStatus =-2;
1476       //
1477       AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(kink->fLab[0]));
1478       AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(kink->fLab[1]));
1479       if (fRecInfo1 && fRecInfo2){
1480         fRecKinkInfo->fT1 = (*fRecInfo1);
1481         fRecKinkInfo->fT2 = (*fRecInfo2);
1482         fRecKinkInfo->fRecStatus =-1;
1483       }
1484       fTreeCmpKinks->Fill();
1485     }
1486   }
1487
1488
1489   fTreeCmpKinks->AutoSave();
1490   printf("Time spended in BuilKinkInfo Loop\n");
1491   timer.Print();
1492   if (fDebug > 2) cerr<<"end of BuildKinkInfo Loop"<<endl;
1493   return 0;
1494 }
1495
1496
1497
1498 void   ESDCmpTr::MakePoints(AliESDtrack * track, AliPointsMI &points)
1499 {
1500   //
1501   // make points in global coordinate frame
1502   //
1503   return;
1504   /*
1505   UInt_t itscl[10];
1506   Int_t nits = track->GetITSclusters(itscl);
1507   Int_t tpccl[1000];
1508   Int_t ntpc = track->GetTPcclusters(tpccl);
1509   UInt_t trdcl[1000];
1510   Int_t ntrd = track->GetTRDclusters(trdcl);
1511   //
1512   AliLoader *itsloader = fLoader->GetLoader("ITSLoader");
1513   AliLoader *tpcloader = fLoader->GetLoader("TPCLoader");
1514   AliLoader *trdloader = fLoader->GetLoader("TRDLoader");
1515   //
1516   AliITStrackerMI itstracker();
1517   */
1518 }
1519
1520
1521 ////////////////////////////////////////////////////////////////////////
1522 ////////////////////////////////////////////////////////////////////////
1523 ////////////////////////////////////////////////////////////////////////
1524
1525
1526
1527 Int_t ESDCmpTr::BuildV0Info(Int_t eventNr)
1528 {
1529 //
1530 // loop over all entries for a given event, find corresponding
1531 // rec. track and store in the fTreeCmp
1532 //
1533   TStopwatch timer;
1534   timer.Start();
1535   Int_t entry = fNextV0ToRead;
1536   Double_t nParticlesTR = fTreeGenV0->GetEntriesFast();
1537   cerr<<"fNParticles, nParticlesTR, fNextV0ToRead: "<<fNParticles<<" "
1538       <<nParticlesTR<<" "<<fNextV0ToRead<<endl;
1539   //
1540   TBranch * branch = fTreeCmpV0->GetBranch("RC.");
1541   branch->SetAddress(&fRecV0Info); // set all pointers
1542   const AliESDVertex * esdvertex = fEvent->GetVertex();
1543   Float_t vertex[3]= {esdvertex->GetXv(), esdvertex->GetYv(),esdvertex->GetZv()};
1544
1545   //
1546   while (entry < nParticlesTR) {
1547     fTreeGenV0->GetEntry(entry);
1548     entry++;
1549     if (eventNr < fGenV0Info->fMCm.fEventNr) continue;
1550     if (eventNr > fGenV0Info->fMCm.fEventNr) continue;;
1551     //
1552     fNextV0ToRead = entry-1;
1553     //
1554     //
1555     AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(fGenV0Info->fMCm.fLabel);
1556     AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(fGenV0Info->fMCd.fLabel);
1557     if (fGenV0Info->fMCm.fCharge*fGenV0Info->fMCd.fCharge>0) continue;  // interactions
1558     if (!fRecInfo1 || !fRecInfo2) continue;
1559     fRecV0Info->fT1 = (*fRecInfo1);
1560     fRecV0Info->fT2 = (*fRecInfo2);
1561     fRecV0Info->fV0Status =0;
1562     if (fRecInfo1 && fRecInfo1->fStatus[1]>0) fRecV0Info->fV0Status+=1;
1563     if (fRecInfo2 && fRecInfo2->fStatus[1]>0) fRecV0Info->fV0Status+=2;
1564
1565     if (fRecV0Info->fV0Status==3&&fRecInfo1->fSign==fRecInfo2->fSign) fRecV0Info->fV0Status*=-1;
1566
1567
1568     if (abs(fRecV0Info->fV0Status)==3){
1569       fRecV0Info->Update(vertex);
1570       {
1571         //
1572         // TPC V0 Info
1573         Double_t x,alpha, param[5],cov[15];
1574         fRecV0Info->fT1.fESDTrack.GetInnerExternalParameters(x,param);
1575         fRecV0Info->fT1.fESDTrack.GetInnerExternalCovariance(cov);
1576         alpha = fRecV0Info->fT1.fESDTrack.GetInnerAlpha();
1577         AliExternalTrackParam paramP(x,alpha,param,cov);
1578         //
1579         fRecV0Info->fT2.fESDTrack.GetInnerExternalParameters(x,param);
1580         fRecV0Info->fT2.fESDTrack.GetInnerExternalCovariance(cov);
1581         alpha = fRecV0Info->fT2.fESDTrack.GetInnerAlpha();
1582         AliExternalTrackParam paramM(x,alpha,param,cov);
1583         //
1584         fRecV0Info->fV0tpc.SetM(paramM);
1585         fRecV0Info->fV0tpc.SetP(paramP);
1586         Double_t pid1[5],pid2[5];
1587         fRecV0Info->fT1.fESDTrack.GetESDpid(pid1);
1588         fRecV0Info->fT1.fESDTrack.GetESDpid(pid2);
1589         //
1590         fRecV0Info->fV0tpc.UpdatePID(pid1,pid2);
1591         fRecV0Info->fV0tpc.Update(vertex);
1592         //
1593         //
1594         fRecV0Info->fT1.fESDTrack.GetExternalParameters(x,param);
1595         fRecV0Info->fT1.fESDTrack.GetExternalCovariance(cov);
1596         alpha = fRecV0Info->fT1.fESDTrack.GetAlpha();
1597         new (&paramP) AliExternalTrackParam(x,alpha,param,cov);
1598         //
1599         fRecV0Info->fT2.fESDTrack.GetExternalParameters(x,param);
1600         fRecV0Info->fT2.fESDTrack.GetExternalCovariance(cov);
1601         alpha = fRecV0Info->fT2.fESDTrack.GetAlpha();
1602         new (&paramM) AliExternalTrackParam(x,alpha,param,cov);
1603         //
1604         fRecV0Info->fV0its.SetM(paramM);
1605         fRecV0Info->fV0its.SetP(paramP);
1606         fRecV0Info->fV0its.UpdatePID(pid1,pid2);
1607         fRecV0Info->fV0its.Update(vertex);
1608
1609       }
1610       if (TMath::Abs(fGenV0Info->fMCm.fPdg)==11 &&TMath::Abs(fGenV0Info->fMCd.fPdg)==11){
1611         if (fRecV0Info->fDist2>10){
1612           fRecV0Info->Update(vertex);
1613         }
1614         if (fRecV0Info->fDist2>10){
1615           fRecV0Info->Update(vertex);
1616         }
1617       }
1618     }
1619     //
1620     // take the V0 from reconstruction
1621
1622     Int_t label =  TMath::Min(fGenV0Info->fMCm.fLabel,fGenV0Info->fMCd.fLabel);
1623     Int_t label2 = TMath::Max(fGenV0Info->fMCm.fLabel,fGenV0Info->fMCd.fLabel);
1624     AliESDV0MI *v0MI=0;
1625     fRecV0Info->fRecStatus   =0;
1626     fRecV0Info->fMultiple    = fMultiRecV0[label];
1627     fRecV0Info->fV0Multiple=0;
1628     //
1629     if (fMultiRecV0[label]>0 || fMultiRecV0[label2]>0){
1630
1631       //      for (Int_t j=0;j<TMath::Min(fMultiRecV0s[label],100);j++){
1632       for (Int_t j=TMath::Min(fMultiRecV0[label],Short_t(20))-1;j>=0;j--){
1633         Int_t index = fIndexRecV0[label*20+j];
1634         if (index<0) continue;
1635         AliESDV0MI *v0MI2  = fEvent->GetV0MI(index);
1636         if (TMath::Abs(v0MI2->fLab[0])==label &&TMath::Abs(v0MI2->fLab[1])==label2) {
1637           v0MI =v0MI2;
1638           fRecV0Info->fV0Multiple++;
1639           fSignedV0[index]=1;
1640         }
1641         if (TMath::Abs(v0MI2->fLab[1])==label &&TMath::Abs(v0MI2->fLab[0])==label2) {
1642           v0MI =v0MI2;
1643           fRecV0Info->fV0Multiple++;
1644           fSignedV0[index]=1;
1645         }
1646       }
1647     }
1648     if (v0MI){
1649       fRecV0Info->fV0rec = *v0MI;
1650       fRecV0Info->fRecStatus=1;
1651     }
1652
1653     fTreeCmpV0->Fill();
1654   }
1655   //
1656   // write fake v0s
1657
1658   Int_t nV0MIs = fEvent->GetNumberOfV0MIs();
1659   for (Int_t i=0;i<nV0MIs;i++){
1660     if (fSignedV0[i]==0){
1661       AliESDV0MI *v0MI  = fEvent->GetV0MI(i);
1662       if (!v0MI) continue;
1663       //
1664       fRecV0Info->fV0rec = *v0MI;
1665       fRecV0Info->fV0Status  =-10;
1666       fRecV0Info->fRecStatus =-2;
1667       //
1668       AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(v0MI->fLab[0]));
1669       AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(v0MI->fLab[1]));
1670       if (fRecInfo1 && fRecInfo2){
1671         fRecV0Info->fT1 = (*fRecInfo1);
1672         fRecV0Info->fT2 = (*fRecInfo2);
1673         fRecV0Info->fRecStatus =-1;
1674       }
1675       fRecV0Info->Update(vertex);
1676       fTreeCmpV0->Fill();
1677     }
1678   }
1679
1680
1681
1682   fTreeCmpV0->AutoSave();
1683   fRecArray->Delete();
1684   printf("Time spended in BuilV0Info Loop\n");
1685   timer.Print();
1686   if (fDebug > 2) cerr<<"end of BuildV0Info Loop"<<endl;
1687   return 0;
1688 }
1689 ////////////////////////////////////////////////////////////////////////
1690 ////////////////////////////////////////////////////////////////////////
1691
1692 void AliESDComparisonDraw::SetIO(const char *fname)
1693 {
1694   //
1695    TFile* file = TFile::Open(fname);
1696    //
1697    fTree = (TTree*) file->Get("ESDcmpTracks");
1698    if (!fTree) {
1699     printf("no track comparison tree found\n");
1700     file->Close();
1701     delete file;
1702   }
1703 }
1704
1705