[u/mrichter/AliRoot.git] / HLT / TPCLib / AliHLTTPCTrackMerger.cxx

// $Id$
// Original: AliHLTTrackMerger.cxx,v 1.12 2005/06/14 10:55:21 cvetan 

//**************************************************************************
//* This file is property of and copyright by the ALICE HLT Project        * 
//* ALICE Experiment at CERN, All rights reserved.                         *
//*                                                                        *
//* Primary Authors: Uli Frankenfeld, maintained by                        *
//*                  Matthias Richter <Matthias.Richter@ift.uib.no>        *
//*                  for The ALICE HLT Project.                            *
//*                                                                        *
//* Permission to use, copy, modify and distribute this software and its   *
//* documentation strictly for non-commercial purposes is hereby granted   *
//* without fee, provided that the above copyright notice appears in all   *
//* copies and that both the copyright notice and this permission notice   *
//* appear in the supporting documentation. The authors make no claims     *
//* about the suitability of this software for any purpose. It is          *
//* provided "as is" without express or implied warranty.                  *
//**************************************************************************

/// @file   AliHLTTPCTrackMerger.cxx
/// @author Uli Frankenfeld, maintained by Matthias Richter
/// @date   
/// @brief  The HLT TPC track segment merger
///

#include "AliHLTTPCLogging.h"
#include "AliHLTTPCTrackMerger.h"
#include "AliHLTTPCTrack.h"
#include "AliHLTTPCTrackSegmentData.h"
#include "AliHLTTPCTransform.h"
#include "AliHLTTPCTrackArray.h"

#if __GNUC__ >= 3
using namespace std;
#endif

ClassImp(AliHLTTPCTrackMerger)

AliHLTTPCTrackMerger::AliHLTTPCTrackMerger() 
  :
  AliHLTTPCMerger(),
  fSubSector(0),
  fNSubSector(0),
  fRowMin(NULL),
  fRowMax(NULL),
  fSlow(0)
{
  //Default constructor
  Is2Global(kFALSE);
  SetParameter();
}


AliHLTTPCTrackMerger::AliHLTTPCTrackMerger(Int_t nsubsectors) 
  :
  AliHLTTPCMerger(),
  fSubSector(0),
  fNSubSector(nsubsectors),
  fRowMin(new Int_t[nsubsectors]),
  fRowMax(new Int_t[nsubsectors]),
  fSlow(0)
{
  //Constructor.
  InitMerger(nsubsectors);
  Is2Global(kFALSE);
  fSlow = kFALSE;
  SetParameter();
}

AliHLTTPCTrackMerger::~AliHLTTPCTrackMerger()
{
  //Destructor
  if (fRowMin) delete[] fRowMin;
  if (fRowMax) delete[] fRowMax;
}

void AliHLTTPCTrackMerger::SetRows(Int_t *row){
  //Set the indeces of the first and last
  //TPC padrows
  //
  for(Int_t i=0;i<fNSubSector;i++){
    fRowMin[i]=*(row+(2*i));
    fRowMax[i]=*(row+(2*i+1));
  }
}

void AliHLTTPCTrackMerger::InitSector(Int_t slice,Int_t subsector){
  // 
  // Select Sector and subsector. The following FillTracks call will 
  // fill this subsector
  //
  fSlice = slice;
  fSubSector = subsector;
  fCurrentTracks = fSubSector;
}

void AliHLTTPCTrackMerger::SlowMerge(AliHLTTPCTrackArray *mergedtrack,AliHLTTPCTrackArray *tracksin,AliHLTTPCTrackArray *tracksout,Double_t xval){
  // 
  // Slow merging of two AliHLTTPCTrackArrays
  // at reference plane x=xval
  //
  void *ntuple=GetNtuple();
  const Int_t  kNOut=tracksout->GetNTracks();
  const Int_t  kNIn =tracksin->GetNTracks();
  const Int_t  kNMerged =mergedtrack->GetNTracks();
  AliHLTTPCTrack *tracks[2];
  Bool_t merge = kTRUE;
  while(merge){
    Int_t inmin=-1,outmin=-1;
    Double_t min=10;
    for(Int_t out=0;out<kNOut;out++){
    AliHLTTPCTrack *outertrack=tracksout->GetCheckedTrack(out);
    if(!outertrack) continue;
      for(Int_t in=0;in<kNIn;in++){
        AliHLTTPCTrack *innertrack=tracksin->GetCheckedTrack(in);
        if(!innertrack) continue;
        Double_t diff = TrackDiff(innertrack,outertrack);
        if(diff>=0&&diff<min){
          min=diff;
          inmin=in;
          outmin=out; 
        }
      } 
    }
    if(inmin>=0&&outmin>=0){
      AliHLTTPCTrack *outertrack=tracksout->GetTrack(outmin);
      AliHLTTPCTrack *innertrack=tracksin->GetTrack(inmin);
      tracks[0]=innertrack;
      tracks[1]=outertrack;
      SortTracks(tracks,2);
      MultiMerge(mergedtrack,tracks,2);
      outertrack->CalculatePoint(xval);
      innertrack->CalculatePoint(xval);
      PrintDiff(innertrack,outertrack);
      //FillNtuple(ntuple,innertrack,outertrack);
      tracksout->Remove(outmin);
      tracksin->Remove(inmin);
//      tracksout->Compress();
//      tracksin->Compress(); 
    }
    else merge = kFALSE;
  }
  LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::SlowMerge","Result")
  <<AliHLTTPCLog::kDec<<"Merged Tracks: "
  <<mergedtrack->GetNTracks()-kNMerged<<ENDLOG;
  const int namelen=256;
  char name[namelen] = "ntuple_t.root";
  for(Int_t i=0;i<4;i++)
    if(tracksin==GetInTracks(i))
      snprintf(name,namelen,"ntuple_t_%d.root",i);
  WriteNtuple(name,ntuple);
}

void AliHLTTPCTrackMerger::SlowMerge(){
  fSlow = kTRUE;
  Merge();
}

void AliHLTTPCTrackMerger::InterMerge(){
  // 
  // Merging of the tracks
  // between readout patches
  //
  for(Int_t patch=0;patch< GetNIn();patch++){
    AliHLTTPCTrackArray * tracks = GetInTracks(patch);
    Double_t xval = AliHLTTPCTransform::Row2X((fRowMax[patch]+fRowMin[patch])/2);
    Int_t nrow= fRowMax[patch]-fRowMin[patch]+1;
    const Int_t  kNIn =tracks->GetNTracks();
    AliHLTTPCTrack *tr[2];
    for(Int_t in=0;in<kNIn;in++){
      AliHLTTPCTrack *t = tracks->GetCheckedTrack(in);
      if(t){
        t->CalculateHelix();
        t->CalculatePoint(xval);
      }
    }
    for(Int_t out=0;out<kNIn;out++){
    AliHLTTPCTrack *outertrack=tracks->GetCheckedTrack(out);
    if(!outertrack) continue;
      for(Int_t in=0;in<kNIn;in++){
        if(in==out) continue;
        AliHLTTPCTrack *innertrack=tracks->GetCheckedTrack(in);
        if(!innertrack) continue;
        if(outertrack->GetNHits()+innertrack->GetNHits()>nrow) continue;

        if(IsTrack(innertrack,outertrack)){
          tr[0]=innertrack;
          tr[1]=outertrack;
          SortTracks(tr,2);
          if(tr[0]->GetLastPointX()<tr[1]->GetFirstPointX()){
            MultiMerge(tracks,tr,2);
            tracks->Remove(out);
            tracks->Remove(in);
            break;
          }
        }
      }
    }
    Int_t nmerged = tracks->GetNTracks()-kNIn;
    LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::InterMerge","Result")
    <<AliHLTTPCLog::kDec<<"Merged Tracks: "<<nmerged<<ENDLOG;
  }
}

void AliHLTTPCTrackMerger::Merge(){
  //Loop over tracks and pass them to the track merger.
  Double_t edge0 = AliHLTTPCTransform::Pi()/18;
  Double_t edge1 = AliHLTTPCTransform::TwoPi() - edge0;
  AliHLTTPCTrackArray *ttt = GetOutTracks();
  if(fNSubSector==1) {
    GetOutTracks()->AddTracks(GetInTracks(0)); 
    LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::Merge","Result")
    <<AliHLTTPCLog::kDec<<"Total Copied Tracks: "<<GetOutTracks()->GetNPresent()
    <<ENDLOG;
    return;
  }
  Int_t subsec = fNSubSector -2; 
  for(Int_t i=subsec;i>=0;i--){
    AliHLTTPCTrackArray *tout = GetOutTracks();
    if(i==subsec) tout = GetInTracks(subsec+1);
    AliHLTTPCTrackArray *tin = GetInTracks(i);
    Double_t xval = AliHLTTPCTransform::Row2X(fRowMax[i]);
    Double_t xmax = AliHLTTPCTransform::Row2X(fRowMax[i+1]);
    Double_t ymax = xval*tan(edge0);
    for(Int_t out=0;out<tout->GetNTracks();out++){
      AliHLTTPCTrack *outtrack=tout->GetCheckedTrack(out);
      if(!outtrack) continue;
      outtrack->CalculateHelix();
      outtrack->CalculatePoint(xval);
      if(outtrack->IsPoint()&&fabs(outtrack->GetPointY())>ymax){
        if(outtrack->GetNHits()<10)
          tout->Remove(out);
      }
    }
//    tout->Compress();
    for(Int_t in=0;in<tin->GetNTracks();in++){
      AliHLTTPCTrack *intrack=(AliHLTTPCTrack*)tin->GetTrack(in);
      intrack->CalculateHelix();
      intrack->CalculatePoint(xval);
    }
    tin->QSort();
    tout->QSort();

    if(fSlow) SlowMerge(ttt,tin,tout,xval);
    else Merge(ttt,tin,tout);
    for(Int_t in=0;in<tin->GetNTracks();in++){
      AliHLTTPCTrack *intrack=(AliHLTTPCTrack*)tin->GetCheckedTrack(in);
      if(!intrack) continue;
      if(intrack->CalculateEdgePoint(edge0)){
        if(intrack->GetPointX()<xmax ){
          AddTrack(ttt,intrack);
          tin->Remove(in);
        }
      } 
      else if(intrack->CalculateEdgePoint(edge1)){
        if(intrack->GetPointX()<xmax ){
          AddTrack(ttt,intrack);
          tin->Remove(in);
        }
      }
    }
/*
    for(Int_t in=0;in<tin->GetNTracks();in++){
      AliHLTTPCTrack *intrack=(AliHLTTPCTrack*)tin->GetCheckedTrack(in);
      if(!intrack) continue;
      if(intrack->GetNHits()<10) continue;
      AddTrack(ttt,intrack);
      tin->Remove(in);
    }
*/
  } // end subsector loop
  LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::Merge","Result")
  <<AliHLTTPCLog::kDec<<"Total Merged Tracks: "<<GetOutTracks()->GetNPresent()
  <<ENDLOG;
}

Int_t AliHLTTPCTrackMerger::Merge(AliHLTTPCTrackArray* mergedtrack,AliHLTTPCTrackArray *tracksin,AliHLTTPCTrackArray *tracksout){
  //Loop over tracks and pass them to the track merger.
  AliHLTTPCTrack *tracks[2];

  const Int_t  kNOut=tracksout->GetNTracks();
  const Int_t  kNIn =tracksin->GetNTracks();
  const Int_t  kNMerged =mergedtrack->GetNTracks();

  Bool_t *ismatchedin  = new Bool_t[kNIn];
  for(Int_t in =0;in<kNIn;in++)
    ismatchedin[in]=kFALSE;
  Bool_t *ismatchedout = new Bool_t[kNOut];
  for(Int_t out =0;out<kNOut;out++)
    ismatchedout[out] = kFALSE;
  for(Int_t out =0;out<kNOut;out++){
    AliHLTTPCTrack *outertrack=(AliHLTTPCTrack*)tracksout->GetCheckedTrack(out);
    if(!outertrack) continue;
    for(Int_t in =0;in<kNIn;in++){
      if(ismatchedin[in]) continue;
      AliHLTTPCTrack *innertrack=(AliHLTTPCTrack*)tracksin->GetCheckedTrack(in);
      if(!innertrack) continue;
      if(outertrack==innertrack) continue;
      if(outertrack->GetCharge()!=innertrack->GetCharge()) continue;
      if(IsTrack(innertrack,outertrack)){
        tracks[0]=innertrack; tracks[1]=outertrack; 
        SortTracks(tracks,2);  
        if(tracks[0]->GetLastPointX()<tracks[1]->GetFirstPointX()){
          MultiMerge(mergedtrack,tracks,2);
          tracksout->Remove(out);
          tracksin->Remove(in);
          ismatchedin[in]=kTRUE;
          ismatchedout[out]=kTRUE;
          break;
        }
      }
    }
  }

  Int_t nmerged = mergedtrack->GetNTracks()-kNMerged;
  LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::Merge","Result")
  <<AliHLTTPCLog::kDec<<"Merged Tracks: "<<nmerged<<ENDLOG;
  delete[] ismatchedin;
  delete[] ismatchedout;
  return nmerged;
}
Commit	Line	Data
0128a907	1	// $Id$
4aa41877	2	// Original: AliHLTTrackMerger.cxx,v 1.12 2005/06/14 10:55:21 cvetan
a6c02c85	3
0128a907	4	//**************************************************************************
	5	//* This file is property of and copyright by the ALICE HLT Project *
	6	//* ALICE Experiment at CERN, All rights reserved. *
	7	//* *
	8	//* Primary Authors: Uli Frankenfeld, maintained by *
	9	//* Matthias Richter <Matthias.Richter@ift.uib.no> *
	10	//* for The ALICE HLT Project. *
	11	//* *
	12	//* Permission to use, copy, modify and distribute this software and its *
	13	//* documentation strictly for non-commercial purposes is hereby granted *
	14	//* without fee, provided that the above copyright notice appears in all *
	15	//* copies and that both the copyright notice and this permission notice *
	16	//* appear in the supporting documentation. The authors make no claims *
	17	//* about the suitability of this software for any purpose. It is *
	18	//* provided "as is" without express or implied warranty. *
	19	//**************************************************************************
2a083ac4	20
0128a907	21	/// @file AliHLTTPCTrackMerger.cxx
	22	/// @author Uli Frankenfeld, maintained by Matthias Richter
	23	/// @date
	24	/// @brief The HLT TPC track segment merger
	25	///
a6c02c85	26
a6c02c85	27	#include "AliHLTTPCLogging.h"
	28	#include "AliHLTTPCTrackMerger.h"
	29	#include "AliHLTTPCTrack.h"
	30	#include "AliHLTTPCTrackSegmentData.h"
	31	#include "AliHLTTPCTransform.h"
	32	#include "AliHLTTPCTrackArray.h"
	33
	34	#if __GNUC__ >= 3
	35	using namespace std;
	36	#endif
	37
	38	ClassImp(AliHLTTPCTrackMerger)
	39
1204d026	40	AliHLTTPCTrackMerger::AliHLTTPCTrackMerger()
	41	:
	42	AliHLTTPCMerger(),
	43	fSubSector(0),
	44	fNSubSector(0),
	45	fRowMin(NULL),
	46	fRowMax(NULL),
	47	fSlow(0)
5d2abf3b	48	{
a6c02c85	49	//Default constructor
a6c02c85	50	Is2Global(kFALSE);
a6c02c85	51	SetParameter();
a6c02c85	52	}
	53
	54
1204d026	55	AliHLTTPCTrackMerger::AliHLTTPCTrackMerger(Int_t nsubsectors)
	56	:
	57	AliHLTTPCMerger(),
	58	fSubSector(0),
	59	fNSubSector(nsubsectors),
	60	fRowMin(new Int_t[nsubsectors]),
	61	fRowMax(new Int_t[nsubsectors]),
	62	fSlow(0)
a6c02c85	63	{
	64	//Constructor.
	65	InitMerger(nsubsectors);
a6c02c85	66	Is2Global(kFALSE);
	67	fSlow = kFALSE;
	68	SetParameter();
2a083ac4	69	}
2a083ac4	70
0128a907	71	AliHLTTPCTrackMerger::~AliHLTTPCTrackMerger()
0128a907	72	{
a6c02c85	73	//Destructor
0128a907	74	if (fRowMin) delete[] fRowMin;
0128a907	75	if (fRowMax) delete[] fRowMax;
a6c02c85	76	}
	77
	78	void AliHLTTPCTrackMerger::SetRows(Int_t *row){
	79	//Set the indeces of the first and last
	80	//TPC padrows
	81	//
	82	for(Int_t i=0;i<fNSubSector;i++){
	83	fRowMin[i]=(row+(2i));
	84	fRowMax[i]=(row+(2i+1));
	85	}
	86	}
	87
	88	void AliHLTTPCTrackMerger::InitSector(Int_t slice,Int_t subsector){
	89	//
	90	// Select Sector and subsector. The following FillTracks call will
	91	// fill this subsector
	92	//
	93	fSlice = slice;
	94	fSubSector = subsector;
	95	fCurrentTracks = fSubSector;
	96	}
	97
	98	void AliHLTTPCTrackMerger::SlowMerge(AliHLTTPCTrackArray mergedtrack,AliHLTTPCTrackArray tracksin,AliHLTTPCTrackArray *tracksout,Double_t xval){
	99	//
	100	// Slow merging of two AliHLTTPCTrackArrays
	101	// at reference plane x=xval
	102	//
	103	void *ntuple=GetNtuple();
	104	const Int_t kNOut=tracksout->GetNTracks();
	105	const Int_t kNIn =tracksin->GetNTracks();
	106	const Int_t kNMerged =mergedtrack->GetNTracks();
	107	AliHLTTPCTrack *tracks[2];
	108	Bool_t merge = kTRUE;
	109	while(merge){
	110	Int_t inmin=-1,outmin=-1;
	111	Double_t min=10;
	112	for(Int_t out=0;out<kNOut;out++){
	113	AliHLTTPCTrack *outertrack=tracksout->GetCheckedTrack(out);
	114	if(!outertrack) continue;
	115	for(Int_t in=0;in<kNIn;in++){
	116	AliHLTTPCTrack *innertrack=tracksin->GetCheckedTrack(in);
	117	if(!innertrack) continue;
	118	Double_t diff = TrackDiff(innertrack,outertrack);
	119	if(diff>=0&&diff<min){
	120	min=diff;
	121	inmin=in;
	122	outmin=out;
	123	}
	124	}
	125	}
	126	if(inmin>=0&&outmin>=0){
	127	AliHLTTPCTrack *outertrack=tracksout->GetTrack(outmin);
	128	AliHLTTPCTrack *innertrack=tracksin->GetTrack(inmin);
	129	tracks[0]=innertrack;
	130	tracks[1]=outertrack;
	131	SortTracks(tracks,2);
	132	MultiMerge(mergedtrack,tracks,2);
	133	outertrack->CalculatePoint(xval);
	134	innertrack->CalculatePoint(xval);
	135	PrintDiff(innertrack,outertrack);
	136	//FillNtuple(ntuple,innertrack,outertrack);
	137	tracksout->Remove(outmin);
	138	tracksin->Remove(inmin);
	139	// tracksout->Compress();
140	// tracksin->Compress();
141	}
142	else merge = kFALSE;
143	}
144	LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::SlowMerge","Result")
145	<<AliHLTTPCLog::kDec<<"Merged Tracks: "
146	<<mergedtrack->GetNTracks()-kNMerged<<ENDLOG;
1c9853d3	147	const int namelen=256;
1c9853d3	148	char name[namelen] = "ntuple_t.root";
a6c02c85	149	for(Int_t i=0;i<4;i++)
a6c02c85	150	if(tracksin==GetInTracks(i))
1c9853d3	151	snprintf(name,namelen,"ntuple_t_%d.root",i);
a6c02c85	152	WriteNtuple(name,ntuple);
	153	}
	154
	155	void AliHLTTPCTrackMerger::SlowMerge(){
	156	fSlow = kTRUE;
	157	Merge();
	158	}
	159
	160	void AliHLTTPCTrackMerger::InterMerge(){
	161	//
	162	// Merging of the tracks
	163	// between readout patches
	164	//
	165	for(Int_t patch=0;patch< GetNIn();patch++){
	166	AliHLTTPCTrackArray * tracks = GetInTracks(patch);
	167	Double_t xval = AliHLTTPCTransform::Row2X((fRowMax[patch]+fRowMin[patch])/2);
	168	Int_t nrow= fRowMax[patch]-fRowMin[patch]+1;
	169	const Int_t kNIn =tracks->GetNTracks();
	170	AliHLTTPCTrack *tr[2];
	171	for(Int_t in=0;in<kNIn;in++){
	172	AliHLTTPCTrack *t = tracks->GetCheckedTrack(in);
	173	if(t){
	174	t->CalculateHelix();
	175	t->CalculatePoint(xval);
	176	}
	177	}
	178	for(Int_t out=0;out<kNIn;out++){
	179	AliHLTTPCTrack *outertrack=tracks->GetCheckedTrack(out);
	180	if(!outertrack) continue;
	181	for(Int_t in=0;in<kNIn;in++){
	182	if(in==out) continue;
	183	AliHLTTPCTrack *innertrack=tracks->GetCheckedTrack(in);
	184	if(!innertrack) continue;
	185	if(outertrack->GetNHits()+innertrack->GetNHits()>nrow) continue;
	186
	187	if(IsTrack(innertrack,outertrack)){
	188	tr[0]=innertrack;
	189	tr[1]=outertrack;
	190	SortTracks(tr,2);
	191	if(tr[0]->GetLastPointX()<tr[1]->GetFirstPointX()){
	192	MultiMerge(tracks,tr,2);
	193	tracks->Remove(out);
	194	tracks->Remove(in);
	195	break;
	196	}
	197	}
	198	}
	199	}
	200	Int_t nmerged = tracks->GetNTracks()-kNIn;
	201	LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::InterMerge","Result")
	202	<<AliHLTTPCLog::kDec<<"Merged Tracks: "<<nmerged<<ENDLOG;
	203	}
	204	}
	205
	206	void AliHLTTPCTrackMerger::Merge(){
	207	//Loop over tracks and pass them to the track merger.
	208	Double_t edge0 = AliHLTTPCTransform::Pi()/18;
	209	Double_t edge1 = AliHLTTPCTransform::TwoPi() - edge0;
	210	AliHLTTPCTrackArray *ttt = GetOutTracks();
	211	if(fNSubSector==1) {
	212	GetOutTracks()->AddTracks(GetInTracks(0));
	213	LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::Merge","Result")
	214	<<AliHLTTPCLog::kDec<<"Total Copied Tracks: "<<GetOutTracks()->GetNPresent()
	215	<<ENDLOG;
216	return;
217	}
218	Int_t subsec = fNSubSector -2;
219	for(Int_t i=subsec;i>=0;i--){
220	AliHLTTPCTrackArray *tout = GetOutTracks();
221	if(i==subsec) tout = GetInTracks(subsec+1);
222	AliHLTTPCTrackArray *tin = GetInTracks(i);
223	Double_t xval = AliHLTTPCTransform::Row2X(fRowMax[i]);
224	Double_t xmax = AliHLTTPCTransform::Row2X(fRowMax[i+1]);
225	Double_t ymax = xval*tan(edge0);
226	for(Int_t out=0;out<tout->GetNTracks();out++){
227	AliHLTTPCTrack *outtrack=tout->GetCheckedTrack(out);
228	if(!outtrack) continue;
229	outtrack->CalculateHelix();
230	outtrack->CalculatePoint(xval);
231	if(outtrack->IsPoint()&&fabs(outtrack->GetPointY())>ymax){
232	if(outtrack->GetNHits()<10)
233	tout->Remove(out);
234	}
235	}
236	// tout->Compress();
237	for(Int_t in=0;in<tin->GetNTracks();in++){
238	AliHLTTPCTrack intrack=(AliHLTTPCTrack)tin->GetTrack(in);
239	intrack->CalculateHelix();
240	intrack->CalculatePoint(xval);
241	}
242	tin->QSort();
243	tout->QSort();
244
245	if(fSlow) SlowMerge(ttt,tin,tout,xval);
246	else Merge(ttt,tin,tout);
247	for(Int_t in=0;in<tin->GetNTracks();in++){
248	AliHLTTPCTrack intrack=(AliHLTTPCTrack)tin->GetCheckedTrack(in);
249	if(!intrack) continue;
250	if(intrack->CalculateEdgePoint(edge0)){
251	if(intrack->GetPointX()<xmax ){
252	AddTrack(ttt,intrack);
253	tin->Remove(in);
254	}
255	}
256	else if(intrack->CalculateEdgePoint(edge1)){
257	if(intrack->GetPointX()<xmax ){
258	AddTrack(ttt,intrack);
259	tin->Remove(in);
260	}
261	}
262	}
263	/*
264	for(Int_t in=0;in<tin->GetNTracks();in++){
265	AliHLTTPCTrack intrack=(AliHLTTPCTrack)tin->GetCheckedTrack(in);
266	if(!intrack) continue;
267	if(intrack->GetNHits()<10) continue;
268	AddTrack(ttt,intrack);
269	tin->Remove(in);
270	}
271	*/
272	} // end subsector loop
273	LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::Merge","Result")
274	<<AliHLTTPCLog::kDec<<"Total Merged Tracks: "<<GetOutTracks()->GetNPresent()
275	<<ENDLOG;
276	}
277
278	Int_t AliHLTTPCTrackMerger::Merge(AliHLTTPCTrackArray* mergedtrack,AliHLTTPCTrackArray tracksin,AliHLTTPCTrackArray tracksout){
279	//Loop over tracks and pass them to the track merger.
280	AliHLTTPCTrack *tracks[2];
281
282	const Int_t kNOut=tracksout->GetNTracks();
283	const Int_t kNIn =tracksin->GetNTracks();
284	const Int_t kNMerged =mergedtrack->GetNTracks();
285
286	Bool_t *ismatchedin = new Bool_t[kNIn];
287	for(Int_t in =0;in<kNIn;in++)
288	ismatchedin[in]=kFALSE;
289	Bool_t *ismatchedout = new Bool_t[kNOut];
290	for(Int_t out =0;out<kNOut;out++)
291	ismatchedout[out] = kFALSE;
292	for(Int_t out =0;out<kNOut;out++){
293	AliHLTTPCTrack outertrack=(AliHLTTPCTrack)tracksout->GetCheckedTrack(out);
294	if(!outertrack) continue;
295	for(Int_t in =0;in<kNIn;in++){
296	if(ismatchedin[in]) continue;
297	AliHLTTPCTrack innertrack=(AliHLTTPCTrack)tracksin->GetCheckedTrack(in);
298	if(!innertrack) continue;
299	if(outertrack==innertrack) continue;
300	if(outertrack->GetCharge()!=innertrack->GetCharge()) continue;
301	if(IsTrack(innertrack,outertrack)){
302	tracks[0]=innertrack; tracks[1]=outertrack;
303	SortTracks(tracks,2);
304	if(tracks[0]->GetLastPointX()<tracks[1]->GetFirstPointX()){
305	MultiMerge(mergedtrack,tracks,2);
306	tracksout->Remove(out);
307	tracksin->Remove(in);
308	ismatchedin[in]=kTRUE;
309	ismatchedout[out]=kTRUE;
310	break;
311	}
312	}
313	}
314	}
315
316	Int_t nmerged = mergedtrack->GetNTracks()-kNMerged;
317	LOG(AliHLTTPCLog::kInformational,"AliHLTTPCTrackMerger::Merge","Result")
318	<<AliHLTTPCLog::kDec<<"Merged Tracks: "<<nmerged<<ENDLOG;
319	delete[] ismatchedin;
320	delete[] ismatchedout;
321	return nmerged;
322	}
323
324