f87ecf7439643b6dc3f1cd7cdbc9ca507c541a84
[u/mrichter/AliRoot.git] / 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 ESDCmpTr *t2 = new ESDCmpTr("genTracks.root","cmpESDTracks.root","galice.root",-1,0,0);
36 t2->Exec();
37
38 //
39 //some cuts definition
40 TCut cprim("cprim","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<0.01&&abs(MC.fVDist[2])<0.01")
41 //TCut cprim("cprim","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<0.5&&abs(MC.fVDist[2])<0.5")
42 //TCut citsin("citsin","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<3.9");
43 TCut citsin("citsin","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)<5");
44 TCut csec("csec","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)>0.5");
45
46
47 TCut crec("crec","fReconstructed==1");
48 TCut cteta1("cteta1","abs(MC.fParticle.Theta()/3.1415-0.5)<0.25");
49 TCut cteta05("cteta05","abs(MC.fParticle.Theta()/3.1415-0.5)<0.1");
50
51 TCut cpos1("cpos1","abs(MC.fParticle.fVz/sqrt(MC.fParticle.fVx*MC.fParticle.fVx+MC.fParticle.fVy*MC.fParticle.fVy))<1");
52 TCut csens("csens","abs(sqrt(fVDist[0]**2+fVDist[1]**2)-170)<50");
53 TCut cmuon("cmuon","abs(MC.fParticle.fPdgCode==-13)");
54 TCut cchi2("cchi2","fESDTrack.fITSchi2MIP[0]<7.&&fESDTrack.fITSchi2MIP[1]<5.&&fESDTrack.fITSchi2MIP[2]<7.&&fESDTrack.fITSchi2MIP[3]<7.5&&fESDTrack.fITSchi2MIP[4]<6.")
55
56 AliESDComparisonDraw comp;  
57 comp.SetIO(); 
58 TFile f("genHits.root");
59 TTree * treel = (TTree*)f.Get("HitLines");
60 if (treel) comp->fTree->AddFriend(treel,"L");
61
62 //
63 //example
64 comp.fTree->SetAlias("radius","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)");
65 comp.fTree->SetAlias("direction","MC.fParticle.fVx*MC.fParticle.fPx+MC.fParticle.fVy*MC.fParticle.fPy");
66 comp.fTree->SetAlias("decaydir","MC.fTRdecay.fX*MC.fTRdecay.fPx+MC.fTRdecay.fY*MC.fTRdecay.fPy");
67 comp.fTree->SetAlias("theta","MC.fTrackRef.Theta()");
68 comp.fTree->SetAlias("primdca","sqrt(RC.fITStrack.fD[0]**2+RC.fITStrack.fD[1]**2)");
69 comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
70 comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
71
72
73 TH1F his("his","his",100,0,20);
74 TH1F hpools("hpools","hpools",100,-7,7);
75 TH1F hfake("hfake","hfake",1000,0,150);
76 TProfile profp0("profp0","profp0",20,-0.4,0.9)
77
78 comp.DrawXY("fTPCinP0[3]","fTPCDelta[4]/fTPCinP1[3]","fReconstructed==1"+cprim,"1",4,0.2,1.5,-0.06,0.06)
79 comp.fRes->Draw();
80 comp.fMean->Draw();  
81
82 comp.DrawXY("fITSinP0[3]","fITSDelta[4]/fITSinP1[3]","fReconstructed==1&&fITSOn"+cprim,"1",4,0.2,1.5,-0.06,0.06)
83 comp.fRes->Draw();
84
85 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn",20,0.2,1.5)
86 comp.fRes->Draw();
87
88 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn&&fITSOn&&fESDTrack.fITSFakeRatio<0.1",10,0.2,1.5)
89 comp.fRes->Draw();
90 comp.Eff("fTPCinP0[3]","fRowsWithDigits>120"+cteta1+cpos1+cprim,"fTPCOn&&fITSOn&&fESDTrack.fITSFakeRatio>0.1",10,0.2,1.5)
91 comp.fRes->Draw();
92
93 comp.fTree->Draw("fESDTrack.fITSsignal/fESDTrack.fTPCsignal","fITSOn&&fTPCOn&&fESDTrack.fITSFakeRatio==0") 
94
95 TH1F his("his","his",100,0,20);
96 TH1F hpools("hpools","hpools",100,-7,7);
97
98 TH2F * hdedx0 = new TH2F("dEdx0","dEdx0",100, 0,2,200,0,550); hdedx0->SetMarkerColor(1);
99 TH2F * hdedx1 = new TH2F("dEdx1","dEdx1",100, 0,2,200,0,550); hdedx1->SetMarkerColor(4);
100 TH2F * hdedx2 = new TH2F("dEdx2","dEdx2",100, 0,2,200,0,550); hdedx2->SetMarkerColor(3);
101 TH2F * hdedx3 = new TH2F("dEdx3","dEdx3",100, 0,2,200,0,550); hdedx3->SetMarkerColor(2);
102
103 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx0","fITSOn&&abs(fPdg)==211&&fITStrack.fN==6"+cprim) 
104 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx1","fITSOn&&abs(fPdg)==2212&&fITStrack.fN==6"+cprim) 
105 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx2","fITSOn&&abs(fPdg)==321&&fITStrack.fN==6"+cprim) 
106 comp.fTree->Draw("fESDTrack.fITSsignal:MC.fParticle.P()>>dEdx3","fITSOn&&abs(fPdg)==11&&fITStrack.fN==6"+cprim) 
107
108
109 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx0","fTRDOn&&abs(fPdg)==211&&fTRDtrack.fN>40&&fStatus[2]>1") 
110 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx1","fTRDOn&&abs(fPdg)==2212&&fTRDtrack.fN>40&&fStatus[2]>1") 
111 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx2","fTRDOn&&abs(fPdg)==321&&fTRDtrack.fN>40&&fStatus[2]>1") 
112 comp.fTree->Draw("fESDTrack.fTRDsignal:MC.fParticle.P()>>dEdx3","fTRDOn&&abs(fPdg)==11&&fTRDtrack.fN>40&&fStatus[2]>1") 
113
114 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx0","fTPCOn&&abs(fPdg)==211&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1); 
115 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx1","fTPCOn&&abs(fPdg)==2212&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1); 
116 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx2","fTPCOn&&abs(fPdg)==321&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1); 
117 comp.fTree->Draw("fESDTrack.fTPCsignal:fTPCinP0[4]>>dEdx3","fTPCOn&&abs(fPdg)==11&&fESDTrack.fTPCncls>180&&fESDTrack.fTPCsignal>10"+cteta1); 
118
119 hdedx3->SetXTitle("P(GeV/c)");
120 hdedx3->SetYTitle("dEdx(unit)");
121 hdedx3->Draw(); hdedx1->Draw("same"); hdedx2->Draw("same"); hdedx0->Draw("same");
122
123 comp.DrawXY("fITSinP0[3]","fITSPools[4]","fReconstructed==1&&fPdg==-211&&fITSOn"+cprim,"1",4,0.2,1.0,-8,8)
124
125 TProfile prof("prof","prof",10,0.5,5);
126
127
128
129
130 */
131
132
133 #if !defined(__CINT__) || defined(__MAKECINT__)
134 #include <stdio.h>
135 #include <string.h>
136 //ROOT includes
137 #include "Rtypes.h"
138 #include "TFile.h"
139 #include "TTree.h"
140 #include "TChain.h"
141 #include "TCut.h"
142 #include "TString.h"
143 #include "TBenchmark.h"
144 #include "TStopwatch.h"
145 #include "TParticle.h"
146 #include "TSystem.h"
147 #include "TTimer.h"
148 #include "TVector3.h"
149 #include "TPad.h"
150 #include "TCanvas.h"
151 #include "TH1F.h"
152 #include "TH2F.h"
153 #include "TF1.h"
154 #include "TText.h"
155 #include "Getline.h"
156 #include "TStyle.h"
157
158 //ALIROOT includes
159 #include "AliRun.h"
160 #include "AliStack.h"
161 #include "AliESDtrack.h"
162 #include "AliSimDigits.h"
163 #include "AliTPCParam.h"
164 #include "AliTPC.h"
165 #include "AliTPCLoader.h"
166 #include "AliDetector.h"
167 #include "AliTrackReference.h"
168 #include "AliRun.h"
169 #include "AliTPCParamSR.h"
170 #include "AliTracker.h"
171 #include "AliComplexCluster.h"
172 #include "AliMagF.h"
173 #include "AliESDEvent.h"
174 #include "AliESDtrack.h"
175 #include "AliITStrackMI.h"
176 #include "AliTRDtrack.h"
177 #include "AliHelix.h"
178 #include "AliESDVertex.h"
179 #include "AliExternalTrackParam.h"
180 #include "AliESDkink.h"
181 #include "AliESDv0.h"
182
183 #endif
184 #include "AliGenInfo.h"
185 #include "AliESDComparisonMI.h"
186
187
188
189
190
191 void MakeAliases(AliESDComparisonDraw&comp)
192 {
193   //
194   // aliases definition
195   //
196   comp.fTree->SetAlias("radius","TMath::Sqrt(MC.fVDist[0]**2+MC.fVDist[1]**2)");
197   comp.fTree->SetAlias("direction","MC.fParticle.fVx*MC.fParticle.fPx+MC.fParticle.fVy*MC.fParticle.fPy");
198   comp.fTree->SetAlias("decaydir","MC.fTRdecay.fX*MC.fTRdecay.fPx+MC.fTRdecay.fY*MC.fTRdecay.fPy");
199   comp.fTree->SetAlias("theta","MC.fTrackRef.Theta()");
200   comp.fTree->SetAlias("primdca","sqrt(RC.fITStrack.fD[0]**2+RC.fITStrack.fD[1]**2)");
201   comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
202   comp.fTree->SetAlias("trdchi2","fTRDtrack.fChi2/fTRDtrack.fN");
203   
204   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.");
205   
206   comp.fTree->SetAlias("dtofmc2","fESDTrack.fTrackTime[2]-(10^12*MC.fTOFReferences[0].fTime)");
207   comp.fTree->SetAlias("dtofrc2","(fESDTrack.fTrackTime[2]-fESDTrack.fTOFsignal)");
208
209   comp.fTree->SetAlias("psum","fESDTrack.fTOFr[4]+fESDTrack.fTOFr[3]+fESDTrack.fTOFr[2]+fESDTrack.fTOFr[1]+fESDTrack.fTOFr[0]");
210   comp.fTree->SetAlias("P0","fESDTrack.fTOFr[0]/psum");
211   comp.fTree->SetAlias("P1","fESDTrack.fTOFr[1]/psum");
212   comp.fTree->SetAlias("P2","fESDTrack.fTOFr[2]/psum");
213   comp.fTree->SetAlias("P3","fESDTrack.fTOFr[3]/psum");
214   comp.fTree->SetAlias("P4","fESDTrack.fTOFr[4]/psum");
215   comp.fTree->SetAlias("MaxP","max(max(max(P0,P1),max(P2,P3)),P4)");
216 }
217
218
219
220
221 void  AliESDRecInfo::UpdatePoints(AliESDtrack*track)
222 {
223   //
224   //
225   Int_t iclusters[200];
226   Float_t density[160];
227   for (Int_t i=0;i<160;i++) density[i]=-1.;
228   fTPCPoints[0]= 160;
229   fTPCPoints[1] = -1;
230   //
231   if (fTPCPoints[0]<fTPCPoints[1]) return;
232   //  Int_t nclusters=track->GetTPCclusters(iclusters);
233
234   Int_t ngood=0;
235   Int_t undeff=0;
236   Int_t nall =0;
237   Int_t range=20;
238   for (Int_t i=0;i<160;i++){
239     Int_t last = i-range;
240     if (nall<range) nall++;
241     if (last>=0){
242       if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
243       if (iclusters[last]==-1) undeff--;
244     }
245     if (iclusters[i]>0&& (iclusters[i]&0x8000)==0)   ngood++;
246     if (iclusters[i]==-1) undeff++;
247     if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
248   }
249   Float_t maxdens=0;
250   Int_t indexmax =0;
251   for (Int_t i=0;i<160;i++){
252     if (density[i]<0) continue;
253     if (density[i]>maxdens){
254       maxdens=density[i];
255       indexmax=i;
256     }
257   }
258   //
259   //max dens point
260   fTPCPoints[3] = maxdens;
261   fTPCPoints[1] = indexmax;
262   //
263   // last point
264   for (Int_t i=indexmax;i<160;i++){
265     if (density[i]<0) continue;
266     if (density[i]<maxdens/2.) {
267       break;
268     }
269     fTPCPoints[2]=i;
270   }
271   //
272   // first point
273   for (Int_t i=indexmax;i>0;i--){
274     if (density[i]<0) continue;
275     if (density[i]<maxdens/2.) {
276       break;
277     }
278     fTPCPoints[0]=i;
279   }
280   //
281   // Density at the last 30 padrows
282   //
283   // 
284   nall  = 0;
285   ngood = 0;
286   for (Int_t i=159;i>0;i--){
287     if (iclusters[i]==-1) continue; //dead zone
288     nall++;
289     if (iclusters[i]>0)   ngood++;
290     if (nall>20) break;
291   }
292   fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
293   //
294   if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;
295   //
296   //
297   // check TRDPoints
298   /*
299   nclusters=track->GetTRDclusters(iclusters);
300   for (Int_t i=nclusters;i>0;i--){
301     
302   }
303   */
304
305
306 }
307
308 //
309 //
310 void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /*par*/, Bool_t reconstructed, AliESDEvent *event)
311 {
312   //
313   //
314   //calculates derived variables
315   //  
316   //
317   UpdatePoints(&fESDTrack);
318   fBestTOFmatch=1000;
319   AliTrackReference * ref = &(info->fTrackRef);
320   fTPCinR0[0] = info->fTrackRef.X();    
321   fTPCinR0[1] = info->fTrackRef.Y();    
322   fTPCinR0[2] = info->fTrackRef.Z();
323   fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]*fTPCinR0[0]+fTPCinR0[1]*fTPCinR0[1]);
324   fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
325   //
326   fTPCinP0[0] = ref->Px();
327   fTPCinP0[1] = ref->Py();
328   fTPCinP0[2] = ref->Pz();
329   fTPCinP0[3] = ref->Pt();
330   fTPCinP0[4] = ref->P();
331   fDeltaP     = (ref->P()-info->fParticle.P())/info->fParticle.P();
332   //
333   //
334   if (fTPCinP0[3]>0.0000001){
335     //
336     fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
337     fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
338   }
339   //
340   //
341   fITSinP0[0]=info->fParticle.Px();
342   fITSinP0[1]=info->fParticle.Py();
343   fITSinP0[2]=info->fParticle.Pz();
344   fITSinP0[3]=info->fParticle.Pt();    
345   //
346   fITSinR0[0]=info->fParticle.Vx();
347   fITSinR0[1]=info->fParticle.Vy();
348   fITSinR0[2]=info->fParticle.Vz();
349   fITSinR0[3] = TMath::Sqrt(fITSinR0[0]*fITSinR0[0]+fITSinR0[1]*fITSinR0[1]);
350   fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
351   //
352   //
353   if (fITSinP0[3]>0.0000001){
354     fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
355     fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
356   }
357   //
358   for (Int_t i=0;i<4;i++) fStatus[i] =0;
359   fReconstructed = kFALSE;
360   fTPCOn = kFALSE;
361   fITSOn = kFALSE;
362   fTRDOn = kFALSE;  
363   if (reconstructed==kFALSE) return;
364
365   fLabels[0] = info->fLabel;
366   fLabels[1] = info->fPrimPart;
367   fReconstructed = kTRUE;
368   fTPCOn = ((fESDTrack.GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
369   fITSOn = ((fESDTrack.GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
370   fTRDOn = ((fESDTrack.GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
371   //
372   //  
373   if ((fESDTrack.GetStatus()&AliESDtrack::kTPCrefit)>0){
374     fStatus[1] =3;
375   }
376   else{
377     if ((fESDTrack.GetStatus()&AliESDtrack::kTPCout)>0){
378       fStatus[1] =2;
379     }
380     else{
381       if ((fESDTrack.GetStatus()&AliESDtrack::kTPCin)>0)
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]>0.000000000000001){
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, alpha;
457     fESDTrack.GetInnerExternalCovariance(cov);
458     fESDTrack.GetInnerExternalParameters(alpha, 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(alpha,x,param);
639       fT1.fESDTrack.GetInnerExternalCovariance(cov);
640       AliExternalTrackParam paramm(x,alpha,param,cov);
641       //
642       fT2.fESDTrack.GetInnerExternalParameters(alpha,x,param);
643       fT2.fESDTrack.GetInnerExternalCovariance(cov);
644       AliExternalTrackParam paramd(x,alpha,param,cov);
645     }    
646     //            
647     //   
648     
649     Float_t v[3] = {fXr[0]-vertex[0],fXr[1]-vertex[1],fXr[2]-vertex[2]};
650     Float_t p[3] = {fPdr[0]+fPm[0], fPdr[1]+fPm[1],fPdr[2]+fPm[2]};
651     
652     Float_t vnorm2 = v[0]*v[0]+v[1]*v[1];
653     Float_t vnorm3 = TMath::Sqrt(v[2]*v[2]+vnorm2);
654     vnorm2 = TMath::Sqrt(vnorm2);
655     Float_t pnorm2 = p[0]*p[0]+p[1]*p[1];
656     Float_t pnorm3 = TMath::Sqrt(p[2]*p[2]+pnorm2);
657     pnorm2 = TMath::Sqrt(pnorm2);
658     
659     fPointAngleFi = (v[0]*p[0]+v[1]*p[1])/(vnorm2*pnorm2);
660     fPointAngleTh = (v[2]*p[2]+vnorm2*pnorm2)/(vnorm3*pnorm3);  
661     fPointAngle   = (v[0]*p[0]+v[1]*p[1]+v[2]*p[2])/(vnorm3*pnorm3);
662   }
663 }
664
665 ////
666 void  AliESDRecKinkInfo::Update()
667 {
668
669   if ( (fT1.fTPCOn)&& (fT2.fTPCOn)){
670     //
671     // IF BOTH RECONSTRUCTED
672     Float_t distance1,distance2;
673     Double_t xx[3],pp[3];
674     //
675     Double_t xd[3],pd[3],signd;
676     Double_t xm[3],pm[3],signm;
677     for (Int_t i=0;i<3;i++){
678       xd[i] = fT2.fTPCinR1[i];
679       pd[i] = fT2.fTPCinP1[i];
680       xm[i] = fT1.fTPCinR1[i];
681       pm[i] = fT1.fTPCinP1[i];
682     }
683     signd =  fT2.fSign<0 ? -1:1;
684     signm =  fT1.fSign<0 ? -1:1;
685
686     AliHelix dhelix1(xd,pd,signd);
687     dhelix1.GetMomentum(0,pp,0);
688     dhelix1.Evaluate(0,xx);      
689     // 
690     //  Double_t x2[3],p2[3];
691     //            
692     AliHelix mhelix(xm,pm,signm);    
693     //
694     //find intersection linear
695     //
696     Double_t phase[2][2],radius[2];
697     Int_t  points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
698     Double_t delta1=10000,delta2=10000;  
699
700     if (points==1){
701       fMinR = TMath::Sqrt(radius[0]);
702     }
703     if (points==2){
704       fMinR =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
705     }
706     
707     if (points>0){
708       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
709       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
710       dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
711     }
712     if (points==2){    
713       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
714       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
715       dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
716     }
717     if (points==1){
718       fMinR = TMath::Sqrt(radius[0]);
719       fDistMinR = delta1;
720     }
721     if (points==2){
722       if (radius[0]<radius[1]){
723         fMinR = TMath::Sqrt(radius[0]);
724         fDistMinR = delta1;
725       }
726       else{
727         fMinR = TMath::Sqrt(radius[1]);
728         fDistMinR = delta2;
729       }
730     }
731     //
732     //
733     distance1 = TMath::Min(delta1,delta2);
734     //
735     //find intersection parabolic
736     //
737     points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
738     delta1=10000,delta2=10000;  
739     
740     if (points>0){
741       dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
742     }
743     if (points==2){    
744       dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
745     }
746     
747     distance2 = TMath::Min(delta1,delta2);
748     if (delta1<delta2){
749       //get V0 info
750       dhelix1.Evaluate(phase[0][0],fXr);
751       dhelix1.GetMomentum(phase[0][0],fPdr);
752       mhelix.GetMomentum(phase[0][1],fPm);
753       dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
754       fRr = TMath::Sqrt(radius[0]);
755     }
756     else{
757       dhelix1.Evaluate(phase[1][0],fXr);
758       dhelix1.GetMomentum(phase[1][0], fPdr);
759       mhelix.GetMomentum(phase[1][1], fPm);
760       dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
761       fRr = TMath::Sqrt(radius[1]);
762     }
763     fDist1 = TMath::Sqrt(distance1);
764     fDist2 = TMath::Sqrt(distance2);      
765     
766     if (fDist2<10.5){
767       Double_t x,alpha,param[5],cov[15];
768       //
769       fT1.fESDTrack.GetInnerExternalParameters(alpha,x,param);
770       fT1.fESDTrack.GetInnerExternalCovariance(cov);
771       AliExternalTrackParam paramm(x,alpha,param,cov);
772       //
773       fT2.fESDTrack.GetInnerExternalParameters(alpha,x,param);
774       fT2.fESDTrack.GetInnerExternalCovariance(cov);
775       AliExternalTrackParam paramd(x,alpha,param,cov);
776       /*
777       AliESDkink kink;
778       kink.Update(&paramm,&paramd);
779       //      kink.Dump();
780       Double_t diff  = kink.fRr-fRr;
781       Double_t diff2 = kink.fDist2-fDist2;
782       printf("Diff\t%f\t%f\n",diff,diff2);
783       */
784     }
785     
786     //            
787     //
788   }
789
790 }
791
792
793 ////////////////////////////////////////////////////////////////////////
794 ESDCmpTr::ESDCmpTr()
795 {
796   Reset();
797 }
798
799 ////////////////////////////////////////////////////////////////////////
800 ESDCmpTr::ESDCmpTr(const char* fnGenTracks,
801                    const char* fnCmp,
802                    const char* fnGalice, Int_t direction,
803                    Int_t nEvents, Int_t firstEvent)
804 {
805   Reset();
806   //  fFnGenTracks = fnGenTracks;
807   //  fFnCmp = fnCmp;
808   sprintf(fFnGenTracks,"%s",fnGenTracks);
809   sprintf(fFnCmp,"%s",fnCmp);
810
811   fFirstEventNr = firstEvent;
812   fEventNr = firstEvent;
813   fNEvents = nEvents;
814   fDirection = direction;
815   //
816   fLoader = AliRunLoader::Open(fnGalice);
817   if (gAlice){
818     //delete AliRunLoader::GetRunLoader();
819     delete gAlice;
820     gAlice = 0x0;
821   }
822   if (fLoader->LoadgAlice()){
823     cerr<<"Error occured while l"<<endl;
824   }
825   Int_t nall = fLoader->GetNumberOfEvents();
826   if (nEvents==0) {
827     nEvents =nall;
828     fNEvents=nall;
829     fFirstEventNr=0;
830   }    
831
832   if (nall<=0){
833     cerr<<"no events available"<<endl;
834     fEventNr = 0;
835     return;
836   }
837   if (firstEvent+nEvents>nall) {
838     fEventNr = nall-firstEvent;
839     cerr<<"restricted number of events availaible"<<endl;
840   }
841   AliMagF * magf = gAlice->Field();
842   AliTracker::SetFieldMap(magf,0);
843
844 }
845
846
847 ////////////////////////////////////////////////////////////////////////
848 ESDCmpTr::~ESDCmpTr()
849 {
850   if (fLoader) {
851     delete fLoader;
852   }
853 }
854
855 //////////////////////////////////////////////////////////////
856 Int_t ESDCmpTr::SetIO()
857 {
858   //
859   // 
860   CreateTreeCmp();
861   if (!fTreeCmp) return 1;
862   fParamTPC = GetTPCParam();
863   //
864   if (!ConnectGenTree()) {
865     cerr<<"Cannot connect tree with generated tracks"<<endl;
866     return 1;
867   }
868   return 0;
869 }
870
871 //////////////////////////////////////////////////////////////
872
873 Int_t ESDCmpTr::SetIO(Int_t eventNr)
874 {
875   //
876   // 
877   // SET INPUT
878   //
879   TFile f("AliESDs.root");
880   //
881  
882   TTree* tree = (TTree*) f.Get("esdTree");
883   if(fEvent)delete fEvent;
884   fEvent = new AliESDEvent();
885   fEvent->ReadFromTree(tree);
886   tree->GetEntry(eventNr);
887
888
889
890   /*
891   Char_t ename[100]; 
892   sprintf(ename,"%d",eventNr);
893   fEvent = (AliESD*)f.Get(ename);
894   if (!fEvent){
895     sprintf(ename,"ESD%d",eventNr);
896     fEvent = (AliESD*)f.Get(ename);
897   }
898   
899   TTree* tree = (TTree*) f.Get("esdTree");
900   if (!tree) {
901     Error("CheckESD", "no ESD tree found");
902     return kFALSE;
903   }
904   tree->SetBranchAddress("ESD", &fEvent);
905   tree->GetEntry(eventNr);
906   */
907
908   if (!fEvent) return 1;
909
910   return 0;
911 }
912
913
914
915 ////////////////////////////////////////////////////////////////////////
916 void ESDCmpTr::Reset()
917 {
918   fEventNr = 0;
919   fNEvents = 0;
920   fTreeCmp = 0;
921   fTreeCmpKinks =0;
922   fTreeCmpV0 =0;
923   //  fFnCmp = "cmpTracks.root";
924   fFileGenTracks = 0;
925   fDebug = 0;
926   //
927   fParamTPC = 0;
928   fEvent =0;
929 }
930
931 ////////////////////////////////////////////////////////////////////////
932 Int_t ESDCmpTr::Exec(Int_t nEvents, Int_t firstEventNr)
933 {
934   fNEvents = nEvents;
935   fFirstEventNr = firstEventNr;
936   return Exec();
937 }
938
939 ////////////////////////////////////////////////////////////////////////
940 Int_t ESDCmpTr::Exec()
941 {
942   TStopwatch timer;
943   timer.Start();
944
945   if (SetIO()==1) 
946     return 1;
947    
948   fNextTreeGenEntryToRead = 0;
949   fNextKinkToRead = 0;
950   fNextV0ToRead   =0;
951   cerr<<"fFirstEventNr, fNEvents: "<<fFirstEventNr<<" "<<fNEvents<<endl;
952   for (Int_t eventNr = fFirstEventNr; eventNr < fFirstEventNr+fNEvents;
953        eventNr++) {
954     fEventNr = eventNr;
955     SetIO(fEventNr);
956     fNParticles = gAlice->GetEvent(fEventNr);    
957
958     fIndexRecTracks = new Short_t[fNParticles*20];  //write at maximum 4 tracks corresponding to particle
959     fIndexRecKinks  = new Short_t[fNParticles*20];  //write at maximum 20 tracks corresponding to particle
960     fIndexRecV0  = new Short_t[fNParticles*20];  //write at maximum 20 tracks corresponding to particle
961
962     fFakeRecTracks = new Short_t[fNParticles];
963     fMultiRecTracks = new Short_t[fNParticles];
964     fMultiRecKinks = new Short_t[fNParticles];
965     fMultiRecV0 = new Short_t[fNParticles];
966
967     for (Int_t i = 0; i<fNParticles; i++) {
968       for (Int_t j=0;j<20;j++){
969         fIndexRecTracks[20*i+j] = -1;
970         fIndexRecKinks[20*i+j]  = -1;
971         fIndexRecV0[20*i+j]  = -1;
972       }
973       fFakeRecTracks[i] = 0;
974       fMultiRecTracks[i] = 0;
975       fMultiRecKinks[i] = 0;
976       fMultiRecV0[i] = 0;      
977     }
978   
979     cout<<"Start to process event "<<fEventNr<<endl;
980     cout<<"\tfNParticles = "<<fNParticles<<endl;
981     if (fDebug>2) cout<<"\tStart loop over TreeT"<<endl;
982     if (TreeTLoop()>0) return 1;
983
984     if (fDebug>2) cout<<"\tStart loop over tree genTracks"<<endl;
985     if (TreeGenLoop(eventNr)>0) return 1;
986     BuildKinkInfo0(eventNr);
987     BuildV0Info(eventNr);
988     fRecArray->Delete();
989
990     if (fDebug>2) cout<<"\tEnd loop over tree genTracks"<<endl;
991
992     delete [] fIndexRecTracks;
993     delete [] fIndexRecKinks;
994     delete [] fIndexRecV0;
995     delete [] fFakeRecTracks;
996     delete [] fMultiRecTracks;
997     delete [] fMultiRecKinks;
998     delete [] fMultiRecV0;
999   }
1000
1001   CloseOutputFile();
1002
1003   cerr<<"Exec finished"<<endl;
1004   timer.Stop();
1005   timer.Print();
1006   return 0;
1007
1008 }
1009 ////////////////////////////////////////////////////////////////////////
1010 Bool_t ESDCmpTr::ConnectGenTree()
1011 {
1012 //
1013 // connect all branches from the genTracksTree
1014 // use the same variables as for the new cmp tree, it may work
1015 //
1016   fFileGenTracks = TFile::Open(fFnGenTracks,"READ");
1017   if (!fFileGenTracks) {
1018     cerr<<"Error in ConnectGenTree: cannot open file "<<fFnGenTracks<<endl;
1019     return kFALSE;
1020   }
1021   fTreeGenTracks = (TTree*)fFileGenTracks->Get("genTracksTree");
1022   if (!fTreeGenTracks) {
1023     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
1024         <<fFnGenTracks<<endl;
1025     return kFALSE;
1026   }
1027   //
1028   fMCInfo = new AliMCInfo;
1029   fTreeGenTracks->SetBranchAddress("MC",&fMCInfo);
1030   //
1031   //
1032   fTreeGenKinks = (TTree*)fFileGenTracks->Get("genKinksTree");
1033   if (!fTreeGenKinks) {
1034     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
1035         <<fFnGenTracks<<endl;
1036     //return kFALSE;
1037   }
1038   else{
1039     fGenKinkInfo = new AliGenKinkInfo;
1040     fTreeGenKinks->SetBranchAddress("MC",&fGenKinkInfo);
1041   }
1042
1043   fTreeGenV0 = (TTree*)fFileGenTracks->Get("genV0Tree");
1044   if (!fTreeGenV0) {
1045     cerr<<"Error in ConnectGenTree: cannot find genTracksTree in the file "
1046         <<fFnGenTracks<<endl;
1047     //return kFALSE;
1048   }
1049   else{
1050     fGenV0Info = new AliGenV0Info;
1051     fTreeGenV0->SetBranchAddress("MC",&fGenV0Info);
1052   }
1053   //
1054   if (fDebug > 1) {
1055     cout<<"Number of gen. tracks with TR: "<<fTreeGenTracks->GetEntries()<<endl;
1056   }
1057   return kTRUE;
1058 }
1059
1060
1061 ////////////////////////////////////////////////////////////////////////
1062 void ESDCmpTr::CreateTreeCmp() 
1063 {
1064   fFileCmp = TFile::Open(fFnCmp,"RECREATE");
1065   if (!fFileCmp) {
1066     cerr<<"Error in CreateTreeCmp: cannot open file "<<fFnCmp<<endl;
1067     return;
1068   }
1069   //
1070   //
1071   fTreeCmp    = new TTree("ESDcmpTracks","ESDcmpTracks");
1072   fMCInfo = new AliMCInfo;
1073   fRecInfo = new AliESDRecInfo;
1074   AliESDtrack * esdTrack = new AliESDtrack;
1075   //  AliITStrackMI * itsTrack = new AliITStrackMI;  
1076   fTreeCmp->Branch("MC","AliMCInfo",&fMCInfo,256000);
1077   fTreeCmp->Branch("RC","AliESDRecInfo",&fRecInfo,256000);
1078   //  fTreeCmp->Branch("fESDTrack","AliESDtrack",&esdTrack);
1079   //  fTreeCmp->Branch("ITS","AliITStrackMI",&itsTrack);
1080   delete esdTrack;
1081   //
1082   //
1083   fTreeCmpKinks    = new TTree("ESDcmpKinks","ESDcmpKinks"); 
1084   fGenKinkInfo     = new AliGenKinkInfo;
1085   fRecKinkInfo     = new AliESDRecKinkInfo;
1086   fTreeCmpKinks->Branch("MC.","AliGenKinkInfo",&fGenKinkInfo,256000);
1087   fTreeCmpKinks->Branch("RC.","AliESDRecKinkInfo",&fRecKinkInfo,256000);
1088   //
1089   //
1090   fTreeCmpV0       = new TTree("ESDcmpV0","ESDcmpV0"); 
1091   fGenV0Info     = new AliGenV0Info;
1092   fRecV0Info     = new AliESDRecV0Info;
1093   fTreeCmpV0->Branch("MC.","AliGenV0Info",   &fGenV0Info,256000);
1094   fTreeCmpV0->Branch("RC.","AliESDRecV0Info",&fRecV0Info,256000);
1095   //
1096   fTreeCmp->AutoSave(); 
1097   fTreeCmpKinks->AutoSave(); 
1098   fTreeCmpV0->AutoSave(); 
1099 }
1100 ////////////////////////////////////////////////////////////////////////
1101 void ESDCmpTr::CloseOutputFile()  
1102 {
1103   if (!fFileCmp) {
1104     cerr<<"File "<<fFnCmp<<" not found as an open file."<<endl;
1105     return;
1106   }
1107   fFileCmp->cd();
1108   fTreeCmp->Write();    
1109   delete fTreeCmp;
1110   
1111   fFileCmp->Close();
1112   delete fFileCmp;
1113   return;
1114 }
1115 ////////////////////////////////////////////////////////////////////////
1116
1117 TVector3 ESDCmpTr::TR2Local(AliTrackReference *trackRef,
1118                             AliTPCParam *paramTPC) {
1119
1120   Float_t x[3] = { trackRef->X(),trackRef->Y(),trackRef->Z()};
1121   Int_t index[4];
1122   paramTPC->Transform0to1(x,index);
1123   paramTPC->Transform1to2Ideal(x,index);
1124   return TVector3(x);
1125 }
1126 ////////////////////////////////////////////////////////////////////////
1127
1128 Int_t ESDCmpTr::TreeTLoop()
1129 {
1130   //
1131   // loop over all ESD reconstructed tracks and store info in memory
1132   //
1133   // + loop over all reconstructed kinks
1134   TStopwatch  timer;
1135   timer.Start();
1136   //  
1137   Int_t nEntries = (Int_t)fEvent->GetNumberOfTracks();  
1138   Int_t nKinks = (Int_t) fEvent->GetNumberOfKinks();
1139   Int_t nV0MIs = (Int_t) fEvent->GetNumberOfV0s();
1140   fSignedKinks = new Short_t[nKinks];
1141   fSignedV0    = new Short_t[nV0MIs];
1142   //
1143   // load kinks to the memory
1144   for (Int_t i=0; i<nKinks;i++){
1145     AliESDkink * kink =fEvent->GetKink(i);
1146     fSignedKinks[i]=0;
1147     if (kink->fStatus<0) continue;
1148   }
1149   //
1150   for (Int_t i=0; i<nV0MIs;i++){
1151     AliESDv0 * v0MI =fEvent->GetV0(i);
1152     fSignedV0[i]=0;
1153     if (v0MI->fStatus<0) continue;
1154   }
1155   
1156   //
1157   //
1158   AliESDtrack * track=0;
1159   for (Int_t iEntry=0; iEntry<nEntries;iEntry++){
1160     //track = (AliESDtrack*)fTracks->UncheckedAt(iEntry);
1161     track = (AliESDtrack*)fEvent->GetTrack(iEntry);
1162     //
1163     Int_t label = track->GetLabel();
1164     Int_t absLabel = abs(label);
1165     if (absLabel < fNParticles) {
1166       //      fIndexRecTracks[absLabel] =  iEntry;
1167       if (label < 0) fFakeRecTracks[absLabel]++;      
1168       if (fMultiRecTracks[absLabel]>0){
1169         if (fMultiRecTracks[absLabel]<20)
1170           fIndexRecTracks[absLabel*20+fMultiRecTracks[absLabel]] =  iEntry;     
1171       }
1172       else      
1173         fIndexRecTracks[absLabel*20] =  iEntry;
1174       fMultiRecTracks[absLabel]++;
1175     }
1176   }
1177   // sort reconstructed kinks  
1178   //
1179   AliESDkink * kink=0;
1180   for (Int_t iEntry=0; iEntry<nKinks;iEntry++){
1181     kink = (AliESDkink*)fEvent->GetKink(iEntry);
1182     if (!kink) continue;
1183     //
1184     Int_t label0 = TMath::Abs(kink->fLab[0]);
1185     Int_t label1 = TMath::Abs(kink->fLab[1]);
1186     Int_t absLabel = TMath::Min(label0,label1);
1187     if (absLabel < fNParticles) {
1188       if (fMultiRecKinks[absLabel]>0){
1189         if (fMultiRecKinks[absLabel]<20)
1190           fIndexRecKinks[absLabel*20+fMultiRecKinks[absLabel]] =  iEntry;       
1191       }
1192       else      
1193         fIndexRecKinks[absLabel*20] =  iEntry;
1194       fMultiRecKinks[absLabel]++;
1195     }
1196   }  
1197   // --sort reconstructed V0
1198   //
1199   AliESDv0 * v0MI=0;
1200   for (Int_t iEntry=0; iEntry<nV0MIs;iEntry++){
1201     v0MI = fEvent->GetV0(iEntry);
1202     if (!v0MI) continue;
1203     //
1204     //    Int_t label0 = TMath::Abs(v0MI->fLab[0]);
1205     //Int_t label1 = TMath::Abs(v0MI->fLab[1]);
1206     //
1207     for (Int_t i=0;i<2;i++){
1208       // Int_t absLabel = TMath::Min(label0,label1);
1209       Int_t absLabel =  TMath::Abs(v0MI->fLab[i]);
1210       if (absLabel < fNParticles) {
1211         if (fMultiRecV0[absLabel]>0){
1212           if (fMultiRecV0[absLabel]<20)
1213             fIndexRecV0[absLabel*20+fMultiRecV0[absLabel]] =  iEntry;   
1214         }
1215         else      
1216           fIndexRecV0[absLabel*20] =  iEntry;
1217         fMultiRecV0[absLabel]++;
1218       }
1219     }
1220   }  
1221
1222
1223   printf("Time spended in TreeTLoop\n");
1224   timer.Print();
1225   
1226   if (fDebug > 2) cerr<<"end of TreeTLoop"<<endl;  
1227   return 0;
1228 }
1229
1230 ////////////////////////////////////////////////////////////////////////
1231 Int_t ESDCmpTr::TreeGenLoop(Int_t eventNr)
1232 {
1233 //
1234 // loop over all entries for a given event, find corresponding 
1235 // rec. track and store in the fTreeCmp
1236 //
1237   TStopwatch timer;
1238   timer.Start();
1239   Int_t entry = fNextTreeGenEntryToRead;
1240   Double_t nParticlesTR = fTreeGenTracks->GetEntriesFast();
1241   cerr<<"fNParticles, nParticlesTR, fNextTreeGenEntryToRead: "<<fNParticles<<" "
1242       <<nParticlesTR<<" "<<fNextTreeGenEntryToRead<<endl;
1243   TBranch * branch = fTreeCmp->GetBranch("RC");
1244   branch->SetAddress(&fRecInfo); // set all pointers
1245   fRecArray = new TObjArray(fNParticles);
1246   AliESDtrack dummytrack;  //
1247
1248   while (entry < nParticlesTR) {
1249     fTreeGenTracks->GetEntry(entry);
1250     entry++;
1251     if (eventNr < fMCInfo->fEventNr) continue;
1252     if (eventNr > fMCInfo->fEventNr) continue;;
1253     //
1254     fNextTreeGenEntryToRead = entry-1;
1255     if (fDebug > 2 && fMCInfo->fLabel < 10) {
1256       cerr<<"Fill track with a label "<<fMCInfo->fLabel<<endl;
1257     }
1258     //    if (fMCInfo->fNTPCRef<1) continue; // not TPCref
1259     //
1260     fRecInfo->Reset();
1261     AliESDtrack * track=0;
1262     fRecInfo->fReconstructed =0;
1263     TVector3 local = TR2Local(&(fMCInfo->fTrackRef),fParamTPC);
1264     local.GetXYZ(fRecInfo->fTRLocalCoord);      
1265     //
1266     if (fIndexRecTracks[fMCInfo->fLabel*20] >= 0) {
1267       //track= (AliESDtrack*)fTracks->UncheckedAt(fIndexRecTracks[fMCInfo->fLabel*4]);
1268       track= (AliESDtrack*)fEvent->GetTrack(fIndexRecTracks[fMCInfo->fLabel*20]);
1269       //
1270       //
1271       // find nearest track if multifound
1272       //Int_t sign = Int_t(track->GetSign()*fMCInfo->fCharge);
1273       //
1274       Int_t status = 0;
1275       if  ((track->GetStatus()&AliESDtrack::kITSrefit)>0) status++;
1276       if  ((track->GetStatus()&AliESDtrack::kTPCrefit)>0) status++;
1277       if  ((track->GetStatus()&AliESDtrack::kTRDrefit)>0) status++;
1278
1279       //
1280       if (fIndexRecTracks[fMCInfo->fLabel*20+1]>0){
1281         //
1282         Double_t p[3];
1283         track->GetInnerPxPyPz(p);
1284         Float_t maxp = p[0]*p[0]+p[1]*p[1]+p[2]*p[2];
1285         //
1286         for (Int_t i=1;i<20;i++){
1287           if (fIndexRecTracks[fMCInfo->fLabel*20+i]>=0){
1288             AliESDtrack * track2 = (AliESDtrack*)fEvent->GetTrack(fIndexRecTracks[fMCInfo->fLabel*20+i]);
1289             if (!track2) continue;
1290             //Int_t sign2 = track->GetSign()*fMCInfo->fCharge; //           
1291             //if (sign2<0) continue;
1292             track2->GetInnerPxPyPz(p);
1293             Float_t mom = p[0]*p[0]+p[1]*p[1]+p[2]*p[2];
1294             /*
1295             if (sign<0){
1296               sign = sign2;
1297               track = track2;
1298               maxp = mom;
1299               continue;
1300             }
1301             */
1302             //
1303             Int_t status2 = 0;
1304             if  ((track2->GetStatus()&AliESDtrack::kITSrefit)>0) status2++;
1305             if  ((track2->GetStatus()&AliESDtrack::kTPCrefit)>0) status2++;
1306             if  ((track2->GetStatus()&AliESDtrack::kTRDrefit)>0) status2++;
1307             if (status2<status) continue;
1308             //
1309             if (mom<maxp) continue;
1310             maxp = mom;
1311             track = track2;
1312             //
1313           }
1314         }
1315       } 
1316       //
1317       if (track) {
1318         new (&(fRecInfo->fESDTrack)) AliESDtrack(*track);
1319       }else{
1320         fRecInfo->fESDTrack = dummytrack;
1321       }
1322       
1323       if (track->GetITStrack())
1324         fRecInfo->fITStrack = *((AliITStrackMI*)track->GetITStrack());
1325       else{
1326         fRecInfo->fITStrack = *track;
1327       }
1328       if (track->GetTRDtrack()){
1329         fRecInfo->fTRDtrack = *((AliTRDtrack*)track->GetTRDtrack());
1330       }
1331       else{
1332         fRecInfo->fTRDtrack.SetdEdx(-1);
1333       }
1334       fRecInfo->fReconstructed = 1;
1335       fRecInfo->fFake     = fFakeRecTracks[fMCInfo->fLabel];
1336       fRecInfo->fMultiple = fMultiRecTracks[fMCInfo->fLabel];
1337       //
1338       fRecInfo->Update(fMCInfo,fParamTPC,kTRUE, fEvent);          
1339     }
1340     else{
1341       fRecInfo->fESDTrack = dummytrack;
1342       fRecInfo->Update(fMCInfo,fParamTPC,kFALSE, fEvent);
1343     }
1344     fRecArray->AddAt(new AliESDRecInfo(*fRecInfo),fMCInfo->fLabel);
1345     fTreeCmp->Fill();
1346   }
1347   fTreeCmp->AutoSave();
1348   //fTracks->Delete();
1349   printf("Time spended in TreeGenLoop\n");
1350   timer.Print();
1351   if (fDebug > 2) cerr<<"end of TreeGenLoop"<<endl;
1352
1353   return 0;
1354 }
1355
1356
1357
1358 ////////////////////////////////////////////////////////////////////////
1359 ////////////////////////////////////////////////////////////////////////
1360 ////////////////////////////////////////////////////////////////////////
1361 Int_t ESDCmpTr::BuildKinkInfo0(Int_t eventNr)
1362 {
1363 //
1364 // loop over all entries for a given event, find corresponding 
1365 // rec. track and store in the fTreeCmp
1366 //
1367   TStopwatch timer;
1368   timer.Start();
1369   Int_t entry = fNextKinkToRead;
1370   Double_t nParticlesTR = fTreeGenKinks->GetEntriesFast();
1371   cerr<<"fNParticles, nParticlesTR, fNextKinkToRead: "<<fNParticles<<" "
1372       <<nParticlesTR<<" "<<fNextKinkToRead<<endl;
1373   //
1374   TBranch * branch = fTreeCmpKinks->GetBranch("RC.");
1375   branch->SetAddress(&fRecKinkInfo); // set all pointers
1376   
1377   //
1378   while (entry < nParticlesTR) {
1379     fTreeGenKinks->GetEntry(entry);
1380     entry++;
1381     if (eventNr < fGenKinkInfo->fMCm.fEventNr) continue;
1382     if (eventNr > fGenKinkInfo->fMCm.fEventNr) continue;;
1383     //
1384     fNextKinkToRead = entry-1;
1385     //
1386     //
1387     AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(fGenKinkInfo->fMCm.fLabel);
1388     AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(fGenKinkInfo->fMCd.fLabel);
1389     fRecKinkInfo->fT1 = (*fRecInfo1);
1390     fRecKinkInfo->fT2 = (*fRecInfo2);
1391     fRecKinkInfo->fStatus =0;
1392     if (fRecInfo1 && fRecInfo1->fTPCOn) fRecKinkInfo->fStatus+=1;
1393     if (fRecInfo2 && fRecInfo2->fTPCOn) fRecKinkInfo->fStatus+=2;
1394     if (fRecKinkInfo->fStatus==3&&fRecInfo1->fSign!=fRecInfo2->fSign) fRecKinkInfo->fStatus*=-1;
1395     
1396     if (fRecKinkInfo->fStatus==3){
1397       fRecKinkInfo->Update();    
1398     }
1399     Int_t label =  TMath::Min(fGenKinkInfo->fMCm.fLabel,fGenKinkInfo->fMCd.fLabel);
1400     Int_t label2 = TMath::Max(fGenKinkInfo->fMCm.fLabel,fGenKinkInfo->fMCd.fLabel);
1401     
1402     AliESDkink *kink=0;
1403     fRecKinkInfo->fRecStatus   =0;
1404     fRecKinkInfo->fMultiple    = fMultiRecKinks[label];
1405     fRecKinkInfo->fKinkMultiple=0;
1406     //
1407     if (fMultiRecKinks[label]>0){
1408
1409       //      for (Int_t j=0;j<TMath::Min(fMultiRecKinks[label],100);j++){
1410       for (Int_t j=TMath::Min(fMultiRecKinks[label],Short_t(20))-1;j>=0;j--){
1411         Int_t index = fIndexRecKinks[label*20+j];
1412         //AliESDkink *kink2  = (AliESDkink*)fKinks->At(index);
1413         AliESDkink *kink2  = (AliESDkink*)fEvent->GetKink(index);
1414         if (TMath::Abs(kink2->fLab[0])==label &&TMath::Abs(kink2->fLab[1])==label2) {
1415           fRecKinkInfo->fKinkMultiple++;
1416           fSignedKinks[index]=1;
1417           Int_t c0=0;
1418           if (kink){
1419             //      if (kink->fTRDOn) c0++;
1420             //if (kink->fITSOn) c0++;
1421             if (kink->GetStatus(2)>0) c0++;
1422             if (kink->GetStatus(0)>0) c0++;
1423           }
1424           Int_t c2=0;
1425           //      if (kink2->fTRDOn) c2++;
1426           //if (kink2->fITSOn) c2++;
1427           if (kink2->GetStatus(2)>0) c2++;
1428           if (kink2->GetStatus(0)>0) c2++;
1429
1430           if (c2<c0) continue;
1431           kink =kink2;
1432         }
1433         if (TMath::Abs(kink2->fLab[1])==label &&TMath::Abs(kink2->fLab[0])==label2) {
1434           fRecKinkInfo->fKinkMultiple++;
1435           fSignedKinks[index]=1;
1436           Int_t c0=0;
1437           if (kink){
1438             //if (kink->fTRDOn) c0++;
1439             //if (kink->fITSOn) c0++;
1440             if (kink->GetStatus(2)>0) c0++;
1441             if (kink->GetStatus(0)>0) c0++;
1442
1443           }
1444           Int_t c2=0;
1445           //      if (kink2->fTRDOn) c2++;
1446           //if (kink2->fITSOn) c2++;
1447           if (kink2->GetStatus(2)>0) c2++;
1448           if (kink2->GetStatus(0)>0) c2++;
1449
1450           if (c2<c0) continue;
1451           kink =kink2;
1452         }
1453       }
1454     }
1455     if (kink){
1456       fRecKinkInfo->fKink = *kink;
1457       fRecKinkInfo->fRecStatus=1;
1458     }
1459     fTreeCmpKinks->Fill();
1460   }
1461   //  Int_t nkinks = fKinks->GetEntriesFast();
1462   Int_t nkinks = fEvent->GetNumberOfKinks();
1463   for (Int_t i=0;i<nkinks;i++){
1464     if (fSignedKinks[i]==0){
1465       //      AliESDkink *kink  = (AliESDkink*)fKinks->At(i);
1466       AliESDkink *kink  = (AliESDkink*)fEvent->GetKink(i);
1467       if (!kink) continue;
1468       //
1469       fRecKinkInfo->fKink = *kink;
1470       fRecKinkInfo->fRecStatus =-2;
1471       //
1472       AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(kink->fLab[0]));
1473       AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(kink->fLab[1]));
1474       if (fRecInfo1 && fRecInfo2){
1475         fRecKinkInfo->fT1 = (*fRecInfo1);
1476         fRecKinkInfo->fT2 = (*fRecInfo2);
1477         fRecKinkInfo->fRecStatus =-1;
1478       }
1479       fTreeCmpKinks->Fill();
1480     }
1481   }
1482
1483
1484   fTreeCmpKinks->AutoSave();
1485   printf("Time spended in BuilKinkInfo Loop\n");
1486   timer.Print();
1487   if (fDebug > 2) cerr<<"end of BuildKinkInfo Loop"<<endl;
1488   return 0;
1489 }
1490
1491
1492
1493 void   ESDCmpTr::MakePoints(AliESDtrack * track, AliPointsMI &points)
1494 {
1495   //
1496   // make points in global coordinate frame
1497   //
1498   return;
1499   /*
1500   UInt_t itscl[10];
1501   Int_t nits = track->GetITSclusters(itscl);
1502   Int_t tpccl[1000];
1503   Int_t ntpc = track->GetTPcclusters(tpccl);
1504   UInt_t trdcl[1000];
1505   Int_t ntrd = track->GetTRDclusters(trdcl);
1506   //
1507   AliLoader *itsloader = fLoader->GetLoader("ITSLoader");
1508   AliLoader *tpcloader = fLoader->GetLoader("TPCLoader");
1509   AliLoader *trdloader = fLoader->GetLoader("TRDLoader");
1510   //
1511   AliITStrackerMI itstracker(); 
1512   */
1513 }
1514
1515
1516 ////////////////////////////////////////////////////////////////////////
1517 ////////////////////////////////////////////////////////////////////////
1518 ////////////////////////////////////////////////////////////////////////
1519
1520
1521
1522 Int_t ESDCmpTr::BuildV0Info(Int_t eventNr)
1523 {
1524 //
1525 // loop over all entries for a given event, find corresponding 
1526 // rec. track and store in the fTreeCmp
1527 //
1528   TStopwatch timer;
1529   timer.Start();
1530   Int_t entry = fNextV0ToRead;
1531   Double_t nParticlesTR = fTreeGenV0->GetEntriesFast();
1532   cerr<<"fNParticles, nParticlesTR, fNextV0ToRead: "<<fNParticles<<" "
1533       <<nParticlesTR<<" "<<fNextV0ToRead<<endl;
1534   //
1535   TBranch * branch = fTreeCmpV0->GetBranch("RC.");
1536   branch->SetAddress(&fRecV0Info); // set all pointers
1537   const AliESDVertex * esdvertex = fEvent->GetVertex();
1538   Float_t vertex[3]= {esdvertex->GetXv(), esdvertex->GetYv(),esdvertex->GetZv()};
1539   
1540   //
1541   while (entry < nParticlesTR) {
1542     fTreeGenV0->GetEntry(entry);
1543     entry++;
1544     if (eventNr < fGenV0Info->fMCm.fEventNr) continue;
1545     if (eventNr > fGenV0Info->fMCm.fEventNr) continue;;
1546     //
1547     fNextV0ToRead = entry-1;
1548     //
1549     //
1550     AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(fGenV0Info->fMCm.fLabel);
1551     AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(fGenV0Info->fMCd.fLabel);
1552     if (fGenV0Info->fMCm.fCharge*fGenV0Info->fMCd.fCharge>0) continue;  // interactions
1553     if (!fRecInfo1 || !fRecInfo2) continue;
1554     fRecV0Info->fT1 = (*fRecInfo1);
1555     fRecV0Info->fT2 = (*fRecInfo2);
1556     fRecV0Info->fV0Status =0;
1557     if (fRecInfo1 && fRecInfo1->fStatus[1]>0) fRecV0Info->fV0Status+=1;
1558     if (fRecInfo2 && fRecInfo2->fStatus[1]>0) fRecV0Info->fV0Status+=2;
1559
1560     if (fRecV0Info->fV0Status==3&&fRecInfo1->fSign==fRecInfo2->fSign) fRecV0Info->fV0Status*=-1;
1561
1562
1563     if (abs(fRecV0Info->fV0Status)==3){
1564       fRecV0Info->Update(vertex);
1565       {
1566         //
1567         // TPC V0 Info
1568         Double_t x,alpha, param[5],cov[15];
1569         if ( fRecV0Info->fT1.fESDTrack.GetInnerParam() && fRecV0Info->fT2.fESDTrack.GetInnerParam()){
1570           fRecV0Info->fT1.fESDTrack.GetInnerExternalParameters(alpha,x,param);
1571           fRecV0Info->fT1.fESDTrack.GetInnerExternalCovariance(cov);
1572           AliExternalTrackParam paramP(x,alpha,param,cov);
1573           //
1574           fRecV0Info->fT2.fESDTrack.GetInnerExternalParameters(alpha,x,param);
1575           fRecV0Info->fT2.fESDTrack.GetInnerExternalCovariance(cov);
1576           AliExternalTrackParam paramM(x,alpha,param,cov);
1577           //
1578           fRecV0Info->fV0tpc.SetM(paramM);
1579           fRecV0Info->fV0tpc.SetP(paramP);
1580           Double_t pid1[5],pid2[5];
1581           fRecV0Info->fT1.fESDTrack.GetESDpid(pid1);
1582           fRecV0Info->fT1.fESDTrack.GetESDpid(pid2);
1583           //
1584           fRecV0Info->fV0tpc.UpdatePID(pid1,pid2);
1585           fRecV0Info->fV0tpc.Update(vertex);
1586         
1587           //
1588           //
1589           fRecV0Info->fT1.fESDTrack.GetExternalParameters(x,param);
1590           fRecV0Info->fT1.fESDTrack.GetExternalCovariance(cov);
1591           alpha = fRecV0Info->fT1.fESDTrack.GetAlpha();
1592           new (&paramP) AliExternalTrackParam(x,alpha,param,cov);
1593           //
1594           fRecV0Info->fT2.fESDTrack.GetExternalParameters(x,param);
1595           fRecV0Info->fT2.fESDTrack.GetExternalCovariance(cov);
1596           alpha = fRecV0Info->fT2.fESDTrack.GetAlpha();
1597           new (&paramM) AliExternalTrackParam(x,alpha,param,cov);
1598           //
1599           fRecV0Info->fV0its.SetM(paramM);
1600           fRecV0Info->fV0its.SetP(paramP);
1601           fRecV0Info->fV0its.UpdatePID(pid1,pid2);
1602           fRecV0Info->fV0its.Update(vertex);
1603         }
1604       }
1605       if (TMath::Abs(fGenV0Info->fMCm.fPdg)==11 &&TMath::Abs(fGenV0Info->fMCd.fPdg)==11){
1606         if (fRecV0Info->fDist2>10){
1607           fRecV0Info->Update(vertex);
1608         }
1609         if (fRecV0Info->fDist2>10){
1610           fRecV0Info->Update(vertex);
1611         }
1612       }
1613     }   
1614     //
1615     // take the V0 from reconstruction
1616  
1617     Int_t label =  TMath::Min(fGenV0Info->fMCm.fLabel,fGenV0Info->fMCd.fLabel);
1618     Int_t label2 = TMath::Max(fGenV0Info->fMCm.fLabel,fGenV0Info->fMCd.fLabel);    
1619     AliESDv0 *v0MI=0;
1620     fRecV0Info->fRecStatus   =0;
1621     fRecV0Info->fMultiple    = fMultiRecV0[label];
1622     fRecV0Info->fV0Multiple=0;
1623     //
1624     if (fMultiRecV0[label]>0 || fMultiRecV0[label2]>0){
1625
1626       //      for (Int_t j=0;j<TMath::Min(fMultiRecV0s[label],100);j++){
1627       for (Int_t j=TMath::Min(fMultiRecV0[label],Short_t(20))-1;j>=0;j--){
1628         Int_t index = fIndexRecV0[label*20+j];
1629         if (index<0) continue;
1630         AliESDv0 *v0MI2  = fEvent->GetV0(index);
1631         if (TMath::Abs(v0MI2->fLab[0])==label &&TMath::Abs(v0MI2->fLab[1])==label2) {
1632           v0MI =v0MI2;
1633           fRecV0Info->fV0Multiple++;
1634           fSignedV0[index]=1;
1635         }
1636         if (TMath::Abs(v0MI2->fLab[1])==label &&TMath::Abs(v0MI2->fLab[0])==label2) {
1637           v0MI =v0MI2;
1638           fRecV0Info->fV0Multiple++;
1639           fSignedV0[index]=1;
1640         }
1641       }
1642     }
1643     if (v0MI){
1644       fRecV0Info->fV0rec = *v0MI;
1645       fRecV0Info->fRecStatus=1;
1646     }
1647
1648     fTreeCmpV0->Fill();
1649   }
1650   //
1651   // write fake v0s
1652
1653   Int_t nV0MIs = fEvent->GetNumberOfV0s();
1654   for (Int_t i=0;i<nV0MIs;i++){
1655     if (fSignedV0[i]==0){
1656       AliESDv0 *v0MI  = fEvent->GetV0(i);
1657       if (!v0MI) continue;
1658       //
1659       fRecV0Info->fV0rec = *v0MI;
1660       fRecV0Info->fV0Status  =-10;
1661       fRecV0Info->fRecStatus =-2;
1662       //
1663       AliESDRecInfo*  fRecInfo1 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(v0MI->fLab[0]));
1664       AliESDRecInfo*  fRecInfo2 = (AliESDRecInfo*)fRecArray->At(TMath::Abs(v0MI->fLab[1]));
1665       if (fRecInfo1 && fRecInfo2){
1666         fRecV0Info->fT1 = (*fRecInfo1);
1667         fRecV0Info->fT2 = (*fRecInfo2);
1668         fRecV0Info->fRecStatus =-1;
1669       }
1670       fRecV0Info->Update(vertex);
1671       fTreeCmpV0->Fill();
1672     }
1673   }
1674
1675
1676
1677   fTreeCmpV0->AutoSave();
1678   printf("Time spended in BuilV0Info Loop\n");
1679   timer.Print();
1680   if (fDebug > 2) cerr<<"end of BuildV0Info Loop"<<endl;
1681   return 0;
1682 }
1683 ////////////////////////////////////////////////////////////////////////
1684 ////////////////////////////////////////////////////////////////////////
1685
1686 void AliESDComparisonDraw::SetIO(const char *fname)
1687 {
1688   //
1689    TFile* file = TFile::Open(fname);
1690    //
1691    fTree = (TTree*) file->Get("ESDcmpTracks");
1692    if (!fTree) {
1693     printf("no track comparison tree found\n");
1694     file->Close();
1695     delete file;
1696   }
1697 }
1698
1699