[u/mrichter/AliRoot.git] / HLT / hough / AliL3HoughMerger.cxx

// Author: Anders Vestbo <mailto:vestbo@fi.uib.no>
//*-- Copyright &copy ASV 

#include <math.h>
#include <stdlib.h>
#include "AliL3Logging.h"
#include "AliL3Transform.h"
#include "AliL3TrackArray.h"
#include "AliL3HoughTrack.h"
#include "AliL3HoughMerger.h"
#include "AliL3HoughTransformer.h"

//_____________________________________________________________
// AliL3HoughMerger
//
// Patch merging class for Hough tracklets

ClassImp(AliL3HoughMerger)

  
AliL3HoughMerger::AliL3HoughMerger()
{
  //Default constructor
}


AliL3HoughMerger::AliL3HoughMerger(Int_t nsubsectors) : AliL3Merger(nsubsectors,"AliL3HoughTrack")
{
  //Constructor
  Is2Global(kFALSE);
  SetParameters(0.001,0.1,0.05);
}


AliL3HoughMerger::~AliL3HoughMerger()
{
 
}

void AliL3HoughMerger::FillTracks(AliL3TrackArray *tracks,Int_t patch)
{
  if(tracks->GetNTracks()==0)
    LOG(AliL3Log::kWarning,"AliL3HoughMerger::FillTracks","Track Array")
      <<"Adding empty track array"<<ENDLOG;
  
  GetInTracks(patch)->AddTracks(tracks,kFALSE);//Copy tracks
  printf("Filling %d tracks to merger\n",tracks->GetNTracks());
}

void AliL3HoughMerger::SetParameters(Double_t maxkappa,Double_t maxpsi,Double_t maxphi0)
{
  fMaxKappa = maxkappa;
  fMaxPsi = maxpsi;
  fMaxPhi0 = maxphi0;
}

Bool_t AliL3HoughMerger::IsTrack(AliL3Track *innertrack,AliL3Track *outertrack)
{
  //Check if the tracks can be merged, called by the track merger
  
  AliL3HoughTrack *tr1 = (AliL3HoughTrack*)innertrack;
  AliL3HoughTrack *tr2 = (AliL3HoughTrack*)outertrack;
  
  if( (!tr1->IsPoint()) || (!tr2->IsPoint()) )  return kFALSE; 
  if(abs(tr1->GetEtaIndex() - tr2->GetEtaIndex()) > 1) return kFALSE;
  if(tr1->GetCharge() != tr2->GetCharge()) return kFALSE;
  if(fabs(tr1->GetPhi0() - tr2->GetPhi0()) > fMaxPhi0) return kFALSE;
  if(fabs(tr1->GetKappa() - tr2->GetKappa()) > fMaxKappa) return kFALSE;
  
  /*
    if( (!tr1->IsPoint()) || (!tr2->IsPoint()) )  return kFALSE; 
    if(fabs(innertrack->GetPointY()-outertrack->GetPointY()) >fMaxY) return kFALSE;
    if(fabs(innertrack->GetPointZ()-outertrack->GetPointZ()) >fMaxZ) return kFALSE;
    if(fabs(innertrack->GetKappa()-outertrack->GetKappa())   >fMaxKappa) return kFALSE;
    if(GetAngle(innertrack->GetPointPsi(),outertrack->GetPointPsi()) >fMaxPsi) return kFALSE;
    if(fabs(innertrack->GetTgl()-outertrack->GetTgl()) >fMaxTgl) return kFALSE;
  */
  
  return kTRUE;//Tracks could be merged
}

void AliL3HoughMerger::AddTrack(AliL3TrackArray *mergedtrack,AliL3Track *track)
{
  AliL3Track *t[1];
  t[0] = track;
  MultiMerge(mergedtrack,t,1);
}

AliL3Track *AliL3HoughMerger::MultiMerge(AliL3TrackArray *mergedtrack,AliL3Track **tracks, Int_t ntrack)
{
  //Called by the track merger

  AliL3HoughTrack *newtrack = (AliL3HoughTrack*)mergedtrack->NextTrack();
  AliL3HoughTrack **trs = (AliL3HoughTrack**)tracks;
  Int_t weight=0;

  //Sum up the total weight:
  for(Int_t i=ntrack-1; i>=0; i--)
    weight += trs[i]->GetWeight();
  
  AliL3HoughTrack *tpt=trs[0];//This is the innermost track
  AliL3HoughTrack *tpl=trs[ntrack-1];
  newtrack->SetTrackParameters(tpt->GetKappa(),tpt->GetPhi0(),weight);
  newtrack->SetEtaIndex(tpt->GetEtaIndex());
  newtrack->SetEta(tpt->GetEta());
  newtrack->SetPsi(tpt->GetPsi());
  newtrack->SetCenterX(tpt->GetCenterX());
  newtrack->SetCenterY(tpt->GetCenterY());
  newtrack->SetFirstPoint(tpt->GetFirstPointX(),tpt->GetFirstPointY(),tpt->GetFirstPointZ());
  newtrack->SetLastPoint(tpl->GetLastPointX(),tpl->GetLastPointY(),tpl->GetLastPointZ());
  newtrack->SetCharge(tpt->GetCharge());
  newtrack->SetRowRange(tpt->GetFirstRow(),tpl->GetLastRow());
  
  return (AliL3Track*)newtrack;

}

void AliL3HoughMerger::MergePatches(Bool_t slow)
{
  //Merge tracks from across the patches.
  
  fSlow = slow;
  AliL3TrackArray *tracks;
  AliL3HoughTrack *track;
  for(Int_t i=0; i<GetNIn(); i++)
    {
      tracks = GetInTracks(i);
      for(Int_t j=0; j<tracks->GetNTracks(); j++)
	{
	  track = (AliL3HoughTrack*)tracks->GetCheckedTrack(j);
	  if(!track) continue;
	  track->UpdateToFirstRow();
	}
    }
  Merge();
  
}

void AliL3HoughMerger::Merge()
{
  Double_t edge0 = PI/18.;
  Double_t edge1 = 2*PI - edge0;
  AliL3TrackArray *ttt = GetOutTracks();
  
  Int_t subsec = GetNIn() - 2; 
  for(Int_t i=subsec;i>=0;i--){
    AliL3TrackArray *tout = GetOutTracks();
    if(i==subsec) tout = GetInTracks(subsec+1);
    AliL3TrackArray *tin = GetInTracks(i);
    Double_t xval = AliL3Transform::Row2X(AliL3Transform::GetLastRow(i));
    Double_t xmax = AliL3Transform::Row2X(AliL3Transform::GetLastRow(i+1));
    Double_t ymax = xval*tan(edge0);
    for(Int_t out=0;out<tout->GetNTracks();out++){
      AliL3Track *outtrack=tout->GetCheckedTrack(out);
      if(!outtrack) continue;
      //outtrack->CalculateHelix();
      outtrack->CalculatePoint(xval);
      if(outtrack->IsPoint()&&fabs(outtrack->GetPointY())>ymax){
	tout->Remove(out);
      }
    }
    //    tout->Compress();
    for(Int_t in=0;in<tin->GetNTracks();in++){
      AliL3Track *intrack=(AliL3Track*)tin->GetTrack(in);
      //intrack->CalculateHelix();
      intrack->CalculatePoint(xval);
    }
    tin->QSort();
    tout->QSort();

    if(fSlow) SlowMerge(ttt,tin,tout,xval);
    else Merge(ttt,tin,tout);

    /*
    //Add the tracks that cross the sector boundary:
    for(Int_t in=0;in<tin->GetNTracks();in++){
      AliL3Track *intrack=(AliL3Track*)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);
        }
      }
    }
    */
  } // end subsector loop
  LOG(AliL3Log::kInformational,"AliL3HoughMerger::Merge","Result")
    <<AliL3Log::kDec<<"Total Merged Tracks: "<<GetOutTracks()->GetNPresent()
    <<ENDLOG;
}

Int_t AliL3HoughMerger::Merge(AliL3TrackArray* mergedtrack,AliL3TrackArray *tracksin,AliL3TrackArray *tracksout)
{
  
  AliL3Track *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++){
    AliL3Track *outertrack=(AliL3Track*)tracksout->GetCheckedTrack(out);
    if(!outertrack) continue;
    for(Int_t in =0;in<kNIn;in++){
      if(ismatchedin[in]) continue;
      AliL3Track *innertrack=(AliL3Track*)tracksin->GetCheckedTrack(in);
      if(!innertrack) continue;
      if(outertrack==innertrack) continue;
      
      if(IsTrack(innertrack,outertrack)) //They can be merged
	{
	  tracks[0]=innertrack; tracks[1]=outertrack; 
	  SortTracks(tracks,2); //Sort the tracks according to minimum x-point
	  //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(AliL3Log::kInformational,"AliL3HoughMerger::Merge","Result")
    <<AliL3Log::kDec<<"Merged Tracks: "<<nmerged<<ENDLOG;
  delete[] ismatchedin;
  delete[] ismatchedout;
  return nmerged;
}

void AliL3HoughMerger::SlowMerge(AliL3TrackArray *mergedtrack,AliL3TrackArray *tracksin,AliL3TrackArray *tracksout,Double_t xval)
{
  void *ntuple=GetNtuple();
  const Int_t  kNOut=tracksout->GetNTracks();
  const Int_t  kNIn =tracksin->GetNTracks();
  const Int_t  kNMerged =mergedtrack->GetNTracks();
  AliL3Track *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++){
    AliL3Track *outertrack=tracksout->GetCheckedTrack(out);
    if(!outertrack) continue;
      for(Int_t in=0;in<kNIn;in++){
        AliL3Track *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){
      AliL3Track *outertrack=tracksout->GetTrack(outmin);
      AliL3Track *innertrack=tracksin->GetTrack(inmin);
      tracks[0]=innertrack;
      tracks[1]=outertrack;
      SortTracks(tracks,2);
      Print(tracks);
      MultiMerge(mergedtrack,tracks,2);
      outertrack->CalculatePoint(xval);
      innertrack->CalculatePoint(xval);
      FillNtuple(ntuple,innertrack,outertrack);
      tracksout->Remove(outmin);
      tracksin->Remove(inmin);
      //      tracksout->Compress();
      //      tracksin->Compress(); 
    }
    else merge = kFALSE;
  }
  LOG(AliL3Log::kInformational,"AliL3HoughMerger::SlowMerge","Result")
    <<AliL3Log::kDec<<"Merged Tracks: "
    <<mergedtrack->GetNTracks()-kNMerged<<ENDLOG;
  char name[256] = "ntuple_t.root";
  for(Int_t i=0;i<GetNIn();i++)
    if(tracksin==GetInTracks(i))
      sprintf(name,"ntuple_t_%d.root",i);
  WriteNtuple(name,ntuple);
}

void AliL3HoughMerger::Print(AliL3Track **tracks)
{
  AliL3HoughTrack *tr1 = (AliL3HoughTrack*)tracks[0];
  AliL3HoughTrack *tr2 = (AliL3HoughTrack*)tracks[1];
  Double_t kappadiff = fabs(tr1->GetKappa()-tr2->GetKappa());
  Double_t phi0diff = fabs(tr1->GetPhi0()-tr2->GetPhi0());
  cout << "---------Difference in merged tracks---------"<<endl;
  cout << "Kappa: "<<kappadiff<<" Phi0 : "<<phi0diff<<endl;
  
}
Commit	Line	Data
b1886074	1	// Author: Anders Vestbo <mailto:vestbo@fi.uib.no>
b1886074	2	//*-- Copyright &copy ASV
a1855560	3
95a00d93	4	#include <math.h>
95a00d93	5	#include <stdlib.h>
a1855560	6	#include "AliL3Logging.h"
b1886074	7	#include "AliL3Transform.h"
a1855560	8	#include "AliL3TrackArray.h"
	9	#include "AliL3HoughTrack.h"
	10	#include "AliL3HoughMerger.h"
	11	#include "AliL3HoughTransformer.h"
	12
b1886074	13	//_____________________________________________________________
	14	// AliL3HoughMerger
	15	//
	16	// Patch merging class for Hough tracklets
	17
a1855560	18	ClassImp(AliL3HoughMerger)
	19
	20
	21	AliL3HoughMerger::AliL3HoughMerger()
	22	{
	23	//Default constructor
a1855560	24	}
	25
	26
b1886074	27	AliL3HoughMerger::AliL3HoughMerger(Int_t nsubsectors) : AliL3Merger(nsubsectors,"AliL3HoughTrack")
a1855560	28	{
a1855560	29	//Constructor
b1886074	30	Is2Global(kFALSE);
b1886074	31	SetParameters(0.001,0.1,0.05);
a1855560	32	}
	33
	34
	35	AliL3HoughMerger::~AliL3HoughMerger()
	36	{
b1886074	37
a1855560	38	}
a1855560	39
b1886074	40	void AliL3HoughMerger::FillTracks(AliL3TrackArray *tracks,Int_t patch)
a1855560	41	{
b1886074	42	if(tracks->GetNTracks()==0)
	43	LOG(AliL3Log::kWarning,"AliL3HoughMerger::FillTracks","Track Array")
	44	<<"Adding empty track array"<<ENDLOG;
	45
	46	GetInTracks(patch)->AddTracks(tracks,kFALSE);//Copy tracks
	47	printf("Filling %d tracks to merger\n",tracks->GetNTracks());
a1855560	48	}
a1855560	49
b1886074	50	void AliL3HoughMerger::SetParameters(Double_t maxkappa,Double_t maxpsi,Double_t maxphi0)
a1855560	51	{
b1886074	52	fMaxKappa = maxkappa;
	53	fMaxPsi = maxpsi;
	54	fMaxPhi0 = maxphi0;
a1855560	55	}
a1855560	56
b1886074	57	Bool_t AliL3HoughMerger::IsTrack(AliL3Track innertrack,AliL3Track outertrack)
a1855560	58	{
b1886074	59	//Check if the tracks can be merged, called by the track merger
	60
	61	AliL3HoughTrack tr1 = (AliL3HoughTrack)innertrack;
	62	AliL3HoughTrack tr2 = (AliL3HoughTrack)outertrack;
	63
	64	if( (!tr1->IsPoint()) \|\| (!tr2->IsPoint()) ) return kFALSE;
	65	if(abs(tr1->GetEtaIndex() - tr2->GetEtaIndex()) > 1) return kFALSE;
	66	if(tr1->GetCharge() != tr2->GetCharge()) return kFALSE;
	67	if(fabs(tr1->GetPhi0() - tr2->GetPhi0()) > fMaxPhi0) return kFALSE;
	68	if(fabs(tr1->GetKappa() - tr2->GetKappa()) > fMaxKappa) return kFALSE;
	69
	70	/*
	71	if( (!tr1->IsPoint()) \|\| (!tr2->IsPoint()) ) return kFALSE;
	72	if(fabs(innertrack->GetPointY()-outertrack->GetPointY()) >fMaxY) return kFALSE;
	73	if(fabs(innertrack->GetPointZ()-outertrack->GetPointZ()) >fMaxZ) return kFALSE;
	74	if(fabs(innertrack->GetKappa()-outertrack->GetKappa()) >fMaxKappa) return kFALSE;
	75	if(GetAngle(innertrack->GetPointPsi(),outertrack->GetPointPsi()) >fMaxPsi) return kFALSE;
	76	if(fabs(innertrack->GetTgl()-outertrack->GetTgl()) >fMaxTgl) return kFALSE;
	77	*/
	78
	79	return kTRUE;//Tracks could be merged
a1855560	80	}
a1855560	81
b1886074	82	void AliL3HoughMerger::AddTrack(AliL3TrackArray mergedtrack,AliL3Track track)
a1855560	83	{
b1886074	84	AliL3Track *t[1];
	85	t[0] = track;
	86	MultiMerge(mergedtrack,t,1);
	87	}
	88
	89	AliL3Track AliL3HoughMerger::MultiMerge(AliL3TrackArray mergedtrack,AliL3Track **tracks, Int_t ntrack)
	90	{
	91	//Called by the track merger
	92
	93	AliL3HoughTrack newtrack = (AliL3HoughTrack)mergedtrack->NextTrack();
	94	AliL3HoughTrack trs = (AliL3HoughTrack)tracks;
	95	Int_t weight=0;
	96
	97	//Sum up the total weight:
	98	for(Int_t i=ntrack-1; i>=0; i--)
	99	weight += trs[i]->GetWeight();
a1855560	100
b1886074	101	AliL3HoughTrack *tpt=trs[0];//This is the innermost track
	102	AliL3HoughTrack *tpl=trs[ntrack-1];
	103	newtrack->SetTrackParameters(tpt->GetKappa(),tpt->GetPhi0(),weight);
	104	newtrack->SetEtaIndex(tpt->GetEtaIndex());
	105	newtrack->SetEta(tpt->GetEta());
	106	newtrack->SetPsi(tpt->GetPsi());
	107	newtrack->SetCenterX(tpt->GetCenterX());
	108	newtrack->SetCenterY(tpt->GetCenterY());
	109	newtrack->SetFirstPoint(tpt->GetFirstPointX(),tpt->GetFirstPointY(),tpt->GetFirstPointZ());
	110	newtrack->SetLastPoint(tpl->GetLastPointX(),tpl->GetLastPointY(),tpl->GetLastPointZ());
	111	newtrack->SetCharge(tpt->GetCharge());
	112	newtrack->SetRowRange(tpt->GetFirstRow(),tpl->GetLastRow());
a1855560	113
b1886074	114	return (AliL3Track*)newtrack;
b1886074	115
a1855560	116	}
a1855560	117
b1886074	118	void AliL3HoughMerger::MergePatches(Bool_t slow)
a1855560	119	{
b1886074	120	//Merge tracks from across the patches.
	121
	122	fSlow = slow;
	123	AliL3TrackArray *tracks;
	124	AliL3HoughTrack *track;
	125	for(Int_t i=0; i<GetNIn(); i++)
a1855560	126	{
b1886074	127	tracks = GetInTracks(i);
b1886074	128	for(Int_t j=0; j<tracks->GetNTracks(); j++)
a1855560	129	{
b1886074	130	track = (AliL3HoughTrack*)tracks->GetCheckedTrack(j);
	131	if(!track) continue;
	132	track->UpdateToFirstRow();
a1855560	133	}
a1855560	134	}
b1886074	135	Merge();
a1855560	136
b1886074	137	}
	138
	139	void AliL3HoughMerger::Merge()
	140	{
	141	Double_t edge0 = PI/18.;
	142	Double_t edge1 = 2*PI - edge0;
	143	AliL3TrackArray *ttt = GetOutTracks();
	144
	145	Int_t subsec = GetNIn() - 2;
	146	for(Int_t i=subsec;i>=0;i--){
	147	AliL3TrackArray *tout = GetOutTracks();
	148	if(i==subsec) tout = GetInTracks(subsec+1);
	149	AliL3TrackArray *tin = GetInTracks(i);
26abc209	150	Double_t xval = AliL3Transform::Row2X(AliL3Transform::GetLastRow(i));
26abc209	151	Double_t xmax = AliL3Transform::Row2X(AliL3Transform::GetLastRow(i+1));
b1886074	152	Double_t ymax = xval*tan(edge0);
	153	for(Int_t out=0;out<tout->GetNTracks();out++){
	154	AliL3Track *outtrack=tout->GetCheckedTrack(out);
	155	if(!outtrack) continue;
	156	//outtrack->CalculateHelix();
	157	outtrack->CalculatePoint(xval);
	158	if(outtrack->IsPoint()&&fabs(outtrack->GetPointY())>ymax){
	159	tout->Remove(out);
	160	}
a1855560	161	}
b1886074	162	// tout->Compress();
	163	for(Int_t in=0;in<tin->GetNTracks();in++){
	164	AliL3Track intrack=(AliL3Track)tin->GetTrack(in);
	165	//intrack->CalculateHelix();
	166	intrack->CalculatePoint(xval);
	167	}
	168	tin->QSort();
	169	tout->QSort();
	170
	171	if(fSlow) SlowMerge(ttt,tin,tout,xval);
	172	else Merge(ttt,tin,tout);
	173
	174	/*
	175	//Add the tracks that cross the sector boundary:
	176	for(Int_t in=0;in<tin->GetNTracks();in++){
	177	AliL3Track intrack=(AliL3Track)tin->GetCheckedTrack(in);
	178	if(!intrack) continue;
	179	if(intrack->CalculateEdgePoint(edge0)){
	180	if(intrack->GetPointX()<xmax ){
	181	AddTrack(ttt,intrack);
	182	tin->Remove(in);
	183	}
	184	}
	185	else if(intrack->CalculateEdgePoint(edge1)){
	186	if(intrack->GetPointX()<xmax ){
	187	AddTrack(ttt,intrack);
	188	tin->Remove(in);
	189	}
	190	}
	191	}
	192	*/
	193	} // end subsector loop
	194	LOG(AliL3Log::kInformational,"AliL3HoughMerger::Merge","Result")
	195	<<AliL3Log::kDec<<"Total Merged Tracks: "<<GetOutTracks()->GetNPresent()
	196	<<ENDLOG;
a1855560	197	}
a1855560	198
b1886074	199	Int_t AliL3HoughMerger::Merge(AliL3TrackArray* mergedtrack,AliL3TrackArray tracksin,AliL3TrackArray tracksout)
a1855560	200	{
b1886074	201
	202	AliL3Track *tracks[2];
	203	const Int_t kNOut=tracksout->GetNTracks();
	204	const Int_t kNIn =tracksin->GetNTracks();
	205	const Int_t kNMerged =mergedtrack->GetNTracks();
	206
	207	Bool_t *ismatchedin = new Bool_t[kNIn];
	208	for(Int_t in =0;in<kNIn;in++)
	209	ismatchedin[in]=kFALSE;
	210	Bool_t *ismatchedout = new Bool_t[kNOut];
	211	for(Int_t out =0;out<kNOut;out++)
	212	ismatchedout[out] = kFALSE;
	213	for(Int_t out =0;out<kNOut;out++){
	214	AliL3Track outertrack=(AliL3Track)tracksout->GetCheckedTrack(out);
	215	if(!outertrack) continue;
	216	for(Int_t in =0;in<kNIn;in++){
	217	if(ismatchedin[in]) continue;
	218	AliL3Track innertrack=(AliL3Track)tracksin->GetCheckedTrack(in);
	219	if(!innertrack) continue;
	220	if(outertrack==innertrack) continue;
	221
	222	if(IsTrack(innertrack,outertrack)) //They can be merged
	223	{
	224	tracks[0]=innertrack; tracks[1]=outertrack;
	225	SortTracks(tracks,2); //Sort the tracks according to minimum x-point
	226	//if(tracks[0]->GetLastPointX()<tracks[1]->GetFirstPointX()){
	227	MultiMerge(mergedtrack,tracks,2);
	228	tracksout->Remove(out);
	229	tracksin->Remove(in);
	230	ismatchedin[in]=kTRUE;
	231	ismatchedout[out]=kTRUE;
	232	break;
	233	// }
	234	}
a1855560	235	}
b1886074	236	}
a1855560	237
b1886074	238	Int_t nmerged = mergedtrack->GetNTracks()-kNMerged;
	239	LOG(AliL3Log::kInformational,"AliL3HoughMerger::Merge","Result")
	240	<<AliL3Log::kDec<<"Merged Tracks: "<<nmerged<<ENDLOG;
	241	delete[] ismatchedin;
	242	delete[] ismatchedout;
	243	return nmerged;
	244	}
	245
	246	void AliL3HoughMerger::SlowMerge(AliL3TrackArray mergedtrack,AliL3TrackArray tracksin,AliL3TrackArray *tracksout,Double_t xval)
	247	{
	248	void *ntuple=GetNtuple();
	249	const Int_t kNOut=tracksout->GetNTracks();
	250	const Int_t kNIn =tracksin->GetNTracks();
	251	const Int_t kNMerged =mergedtrack->GetNTracks();
	252	AliL3Track *tracks[2];
	253	Bool_t merge = kTRUE;
	254	while(merge){
	255	Int_t inmin=-1,outmin=-1;
	256	Double_t min=10;
	257	for(Int_t out=0;out<kNOut;out++){
	258	AliL3Track *outertrack=tracksout->GetCheckedTrack(out);
	259	if(!outertrack) continue;
	260	for(Int_t in=0;in<kNIn;in++){
	261	AliL3Track *innertrack=tracksin->GetCheckedTrack(in);
	262	if(!innertrack) continue;
	263	Double_t diff = TrackDiff(innertrack,outertrack);
	264	if(diff>=0&&diff<min){
	265	min=diff;
	266	inmin=in;
	267	outmin=out;
	268	}
	269	}
	270	}
	271	if(inmin>=0&&outmin>=0){
	272	AliL3Track *outertrack=tracksout->GetTrack(outmin);
	273	AliL3Track *innertrack=tracksin->GetTrack(inmin);
	274	tracks[0]=innertrack;
	275	tracks[1]=outertrack;
	276	SortTracks(tracks,2);
	277	Print(tracks);
	278	MultiMerge(mergedtrack,tracks,2);
	279	outertrack->CalculatePoint(xval);
	280	innertrack->CalculatePoint(xval);
	281	FillNtuple(ntuple,innertrack,outertrack);
	282	tracksout->Remove(outmin);
	283	tracksin->Remove(inmin);
	284	// tracksout->Compress();
	285	// tracksin->Compress();
	286	}
	287	else merge = kFALSE;
	288	}
	289	LOG(AliL3Log::kInformational,"AliL3HoughMerger::SlowMerge","Result")
	290	<<AliL3Log::kDec<<"Merged Tracks: "
	291	<<mergedtrack->GetNTracks()-kNMerged<<ENDLOG;
	292	char name[256] = "ntuple_t.root";
	293	for(Int_t i=0;i<GetNIn();i++)
	294	if(tracksin==GetInTracks(i))
	295	sprintf(name,"ntuple_t_%d.root",i);
	296	WriteNtuple(name,ntuple);
	297	}
	298
	299	void AliL3HoughMerger::Print(AliL3Track **tracks)
	300	{
	301	AliL3HoughTrack tr1 = (AliL3HoughTrack)tracks[0];
302	AliL3HoughTrack tr2 = (AliL3HoughTrack)tracks[1];
303	Double_t kappadiff = fabs(tr1->GetKappa()-tr2->GetKappa());
304	Double_t phi0diff = fabs(tr1->GetPhi0()-tr2->GetPhi0());
305	cout << "---------Difference in merged tracks---------"<<endl;
306	cout << "Kappa: "<<kappadiff<<" Phi0 : "<<phi0diff<<endl;
a1855560	307
a1855560	308	}