[u/mrichter/AliRoot.git] / HLT / hough / AliL3HoughTransformerGlobal.cxx

// @(#) $Id$

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

#include "AliL3StandardIncludes.h"

#include "AliL3Logging.h"
#include "AliL3HoughTransformerGlobal.h"
#include "AliL3FileHandler.h"
#include "AliL3Transform.h"
#include "AliL3DigitData.h"
#include "AliL3Track.h"
#include "AliL3Histogram.h"
#include "AliL3TrackArray.h"
#include "AliL3HoughMaxFinder.h"
#include "AliL3HoughTrack.h"
#include "AliL3SpacePointData.h"

#include <TH2.h>

#if GCCVERSION == 3
using namespace std;
#endif

//_____________________________________________________________
// AliL3HoughTransformerGlobal
//
// Hough transformation class
//

ClassImp(AliL3HoughTransformerGlobal)

AliL3HoughTransformerGlobal::AliL3HoughTransformerGlobal()
{
  fPadMin=0;
  fPadMax=0;
  fNActiveSlice=0;
  fMemHandler=0;
  fEvent=0;
  fPsi=0;
  fPtMin=0;
  fTracks=0;
  fPeakFinder=0;
  fSeedPadRow=-1;
}

AliL3HoughTransformerGlobal::AliL3HoughTransformerGlobal(Char_t *path,Int_t event)
{
  strcpy(fPath,path);
  fEvent=event;
  fMemHandler=0;
  fPadMin=0;
  fPadMax=0;
  fPsi=0;
  fPtMin=0;
  fNActiveSlice=0;
  fTracks = new AliL3TrackArray("AliL3HoughTrack");
  fPeakFinder = new AliL3HoughMaxFinder("KappaPhi",1000);
}

AliL3HoughTransformerGlobal::~AliL3HoughTransformerGlobal()
{
  if(fPadMin)
    delete [] fPadMin;
  if(fPadMax)
    delete [] fPadMax;
  if(fTracks)
    delete fTracks;
  if(fPeakFinder)
    delete fPeakFinder;
  UnloadActiveSlices();
  
}

void AliL3HoughTransformerGlobal::CreateHistograms(Int_t nxbin,Int_t nybin)
{
  if(fPsi==0)
    {
      cerr<<"AliL3HoughTransformerGlobal::CreateHistograms : Call DefineRegion first"<<endl;
      exit(5);
    }
  Float_t psi = fPsi*180./AliL3Transform::Pi();
  AliL3HoughTransformer::CreateHistograms(nxbin,fPtMin,nybin,-psi,psi);
}

void AliL3HoughTransformerGlobal::TransformCircleC()
{
  
  Seed *clusters = new Seed[1000];
  Int_t nclusters = LoadClusterSeeds(clusters);
  
  Int_t i=0,sector,row,slice;
  UInt_t dummy=0;
  Float_t xyz[3],rpe[3],kappa,psi;
  
  for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
    {
      if(sl < 0 || sl < 18 && GetSlice() >= 18)
	slice = sl + 18;
      else if(sl > 35 || sl > 17 && GetSlice() <= 17)
	slice = sl-18;
      else
	slice = sl;
      cout<<"Transforming in slice "<<slice<<endl;
      
      AliL3DigitRowData *rowPt = (AliL3DigitRowData*)fMemHandler[i++]->GetDataPointer(dummy);
      
      for(Int_t padrow=0; padrow<AliL3Transform::GetNRows(); padrow++)
	{
	  if(padrow == fSeedPadRow) continue;
	  AliL3DigitData *digits = (AliL3DigitData*)rowPt->fDigitData;
	  
	  for(UInt_t j=0; j<rowPt->fNDigit; j++)
	    {
	      Int_t pad = digits[j].fPad;
	      
	      if(i==1 && pad < fPadMin[padrow])
		continue;
	      if(i==fNActiveSlice*2+1 && pad>fPadMax[padrow])
		continue;
	      
	      Int_t time = digits[j].fTime;
	      Int_t charge = digits[j].fCharge;
	      
	      if(charge > GetUpperThreshold() || charge < GetLowerThreshold())
		continue;
	      
	      AliL3Transform::Slice2Sector(slice,padrow,sector,row);
	      AliL3Transform::Raw2Local(xyz,sector,row,pad,time);
	      
	      Rotate(xyz,i-1-fNActiveSlice);
	      
	      AliL3Transform::XYZtoRPhiEta(rpe,xyz);
	      rpe[0] = sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
	      
	      Int_t eta_index = GetEtaIndex(rpe[2]);
	      
	      AliL3Histogram *hist = GetHistogram(eta_index);
	      
	      for(Int_t l=0; l<nclusters; l++)
		{
		  if(clusters[l].fIndex != eta_index) continue;
		  psi = atan( (clusters[l].fRadius*sin(rpe[1])-rpe[0]*sin(clusters[l].fPhi))/
			      (clusters[l].fRadius*cos(rpe[1])-rpe[0]*cos(clusters[l].fPhi)) );
		  kappa = 2*sin(clusters[l].fPhi-psi)/clusters[l].fRadius;
		  if(fabs(kappa) < 1e-33)
  		    continue;
		  
		  hist->Fill(kappa,psi,(int)rint(log((Float_t)charge)));
		}
	    }
	  AliL3MemHandler::UpdateRowPointer(rowPt);
	}
    }
  delete [] clusters;
}

void AliL3HoughTransformerGlobal::TransformCircle()
{
  
  Int_t i=0,sector,row,slice;
  UInt_t dummy=0;
  Float_t xyz[3],rpe[3],kappa,psi;
  
  for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
    {
      if(sl < 0 || sl < 18 && GetSlice() >= 18)
	slice = sl + 18;
      else if(sl > 35 || sl > 17 && GetSlice() <= 17)
	slice = sl-18;
      else
	slice = sl;
      cout<<"Transforming in slice "<<slice<<endl;
      
      AliL3DigitRowData *rowPt = (AliL3DigitRowData*)fMemHandler[i++]->GetDataPointer(dummy);
      
      for(Int_t padrow=0; padrow<AliL3Transform::GetNRows(); padrow++)
	{

	  AliL3DigitData *digits = (AliL3DigitData*)rowPt->fDigitData;
	  
	  for(UInt_t j=0; j<rowPt->fNDigit; j++)
	    {
	      Int_t pad = digits[j].fPad;
	      
	      if(i==1 && pad < fPadMin[padrow])
		continue;
	      if(i==fNActiveSlice*2+1 && pad>fPadMax[padrow])
		continue;
	      
	      Int_t time = digits[j].fTime;
	      Int_t charge = digits[j].fCharge;
	      
	      if(charge > GetUpperThreshold() || charge < GetLowerThreshold())
		continue;
	      
	      AliL3Transform::Slice2Sector(slice,padrow,sector,row);
	      AliL3Transform::Raw2Local(xyz,sector,row,pad,time);
	      
	      Rotate(xyz,i-1-fNActiveSlice);
	      
	      AliL3Transform::XYZtoRPhiEta(rpe,xyz);
	      rpe[0] = sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
	      
	      Int_t eta_index = GetEtaIndex(rpe[2]);
	      
	      AliL3Histogram *hist = GetHistogram(eta_index);
	      
	      for(Int_t b=hist->GetFirstYbin(); b<=hist->GetLastYbin(); b++)
		{
		  psi = hist->GetBinCenterY(b);
		  kappa = 2*sin(rpe[1] - psi)/rpe[0];
		  
		  if(fabs(kappa) < 1e-33)
		    continue;
		  
		  hist->Fill(kappa,psi,(int)rint(log((Float_t)charge)));
		}
	    }
	  AliL3MemHandler::UpdateRowPointer(rowPt);
	}
    }
}

void AliL3HoughTransformerGlobal::VerifyTracks(AliL3TrackArray *tracks,Int_t &index)
{
  for(int i=index; i<tracks->GetNTracks(); i++)
    {
      AliL3HoughTrack *tr = (AliL3HoughTrack*)tracks->GetCheckedTrack(i);
      if(!tr) continue;

      Float_t angle=0;
      AliL3Transform::Local2GlobalAngle(&angle,GetSlice());
      if(!tr->CalculateReferencePoint(angle,AliL3Transform::Row2X(fSeedPadRow)))
	{
	  tracks->Remove(i);
	  continue;
	}
      Int_t sector,row;
      AliL3Transform::Slice2Sector(GetSlice(),fSeedPadRow,sector,row);
      float xyz[3] = {tr->GetPointX(),tr->GetPointY(),tr->GetPointZ()};
      AliL3Transform::Global2Raw(xyz,sector,row);
      if(xyz[1]<0 || xyz[1]>=AliL3Transform::GetNPads(fSeedPadRow) ||
	 xyz[2]<0 || xyz[2]>=AliL3Transform::GetNTimeBins())
	tracks->Remove(i);
    }
  tracks->Compress();
  index = tracks->GetNTracks();
}

void AliL3HoughTransformerGlobal::FindPeaks(AliL3Histogram *hist,Float_t eta)
{
  
  fPeakFinder->Reset();
  fPeakFinder->SetHistogram(hist);
  fPeakFinder->FindAbsMaxima();
  if(fPeakFinder->GetWeight(0) < 1000)
    return;
  
  AliL3HoughTrack *track = (AliL3HoughTrack*)fTracks->NextTrack();
  track->SetTrackParameters(fPeakFinder->GetXPeak(0),fPeakFinder->GetYPeak(0),fPeakFinder->GetWeight(0));
  track->SetEta(eta);
  track->SetRowRange(AliL3Transform::GetFirstRow(0),AliL3Transform::GetLastRow(5));
}

void AliL3HoughTransformerGlobal::Rotate(Float_t *xyz,Int_t rel_slice)
{
  //Rotate coordinates from one slice to the slice relative to it;
  //-1 means lower
  //1 means upper

  Float_t angle = (Float_t)rel_slice*AliL3Transform::Deg2Rad(20);
  Float_t x=xyz[0],y=xyz[1];
  xyz[0] = x*cos(angle) - y*sin(angle);
  xyz[1] = x*sin(angle) + y*cos(angle);
}


void AliL3HoughTransformerGlobal::DefineRegion(Float_t minpt,Float_t linephi,Int_t seedpadrow)
{
  //Setup the region to be included in the transform
  //This function should be called only once, since it is the same for all slices.
  
  fSeedPadRow=seedpadrow;
  fPtMin = minpt;
  
  fPadMin = new Int_t[AliL3Transform::GetNRows()];
  fPadMax = new Int_t[AliL3Transform::GetNRows()];
  
  //Phirange of data which should be included in the transform
  //Here we assume a min pt to define it; fPtMin
  //Based on pt (kappa) and the two points; origo and middle point, we can get psi angle
  
  //Calculate the upper point, the lower point is symmetrical around the x-axis
  //The track in this calculation has a positive charge, and the kappa sign is the opposite:  
  
  Float_t xyz[3],phi,phi2;
  
  phi = CalculateBorder(xyz,-1); //upward bending track
  phi2 = CalculateBorder(xyz,1); //downward bending track
  if(phi2 > phi)
    phi = phi2;
  
  cout<<"Phiangle "<<phi*180/AliL3Transform::Pi()<<" psi "<<fPsi*180/AliL3Transform::Pi()<<" nslices "<<fNActiveSlice<<endl;
  
  Float_t rotangle = fNActiveSlice*20;
  
  //Calculate the LUT for min/max pad for every padrow, and check which slices we need.
  Int_t pad,sector,row;
  for(Int_t i=0; i<AliL3Transform::GetNRows(); i++)
    {
      AliL3Transform::Slice2Sector(0,i,sector,row);
      
      //Lower boundary:
      pad = AliL3Transform::GetNPads(i)-1;
      while(pad >= 0)
	{
	  AliL3Transform::Raw2Local(xyz,sector,row,pad,0);
	  if(AliL3Transform::GetPhi(xyz) > -1.*phi + AliL3Transform::Deg2Rad(rotangle))
	    fPadMin[i] = pad;
	  else
	    break;
	  pad--;
	}
      
      //Upper boundary
      pad = 0;
      while(pad < AliL3Transform::GetNPads(i))
	{
	  AliL3Transform::Raw2Local(xyz,sector,row,pad,0);
	  if(AliL3Transform::GetPhi(xyz) < phi - AliL3Transform::Deg2Rad(rotangle))
	    fPadMax[i] = pad;
	  else
	    break;
	  pad++;
	}
    }
  
  cout<<"Padmax "<<fPadMax[155]<<endl;

}

Float_t AliL3HoughTransformerGlobal::CalculateBorder(Float_t *xyz,Int_t charge)
{
  Double_t lineradius = sqrt(pow(AliL3Transform::Row2X(fSeedPadRow),2) + pow(AliL3Transform::GetMaxY(fSeedPadRow),2));

  Double_t kappa = -charge*AliL3Transform::GetBField()*AliL3Transform::GetBFact()/fPtMin;

  //Calculate the psi angle of the track = emission angle with x-axis in origo
  if( fabs(lineradius*kappa/2) > 1)
    {
      cerr<<"AliL3TransformerGlobal::DefineRegion : Angle too big"<<endl;
      exit(5);
    }
  
  Int_t nslices=0;
  Float_t psi = AliL3Transform::Deg2Rad(10) - asin(lineradius*kappa/2);
  if(charge > 0)
    fPsi=psi;
  
  AliL3Track track;
  track.SetFirstPoint(0,0,0);
  track.SetPt(fPtMin);
  track.SetPsi(psi);
  track.SetCharge(charge);
  track.CalculateHelix();
  
  Int_t crossingrow=0;
  if(charge < 0)
    crossingrow = AliL3Transform::GetNRows()-1;
  
  Float_t rotangle;
  
 redefine:
  
  rotangle = nslices*20;
  
  if(nslices==0)//here we are in local slice, so we use the appropriate function. a mess of course...
    {
      while(!track.GetCrossingPoint(crossingrow,xyz))
	{
	  if(crossingrow==0)
	    {	  
	      cerr<<"AliL3HoughTransformerGlobal::DefineRegion : Error calculating point1 on row "<<crossingrow<<endl;
	      exit(5);
	    }
	  crossingrow--;
	}
    }
  else
    {
      while(!track.CalculateReferencePoint(AliL3Transform::Deg2Rad(rotangle),AliL3Transform::Row2X(crossingrow)))
	{
	  if(crossingrow==0)
	    {
	      cerr<<"AliL3HoughTransformerGlobal::DefineRegion : Error calculating point2 on row "<<crossingrow<<endl;
	      exit(5);
	    }
	  crossingrow--;
	}
      
      xyz[0] = track.GetPointX();
      xyz[1] = track.GetPointY();
      xyz[2] = track.GetPointZ();
    }
  
  Float_t phi = atan2(xyz[1],xyz[0]);
  
  //Rotate coordinates back to local coordinates:
  Rotate(xyz,-1*nslices);
  
  Int_t sector,row;
  AliL3Transform::Slice2Sector(0,crossingrow,sector,row);
  AliL3Transform::Local2Raw(xyz,sector,row);
  if(xyz[1] < 0)
    {
      if(crossingrow>0)
	{
	  cerr<<"AliL3HoughTransformerGlobal::DefineRegion : Wrong pad, probably a deadzone... "<<xyz[1]<<endl;
	  exit(5);
	}
      else
	return 0;//here you only want the crossing point with the outer padrow
    }
  if(xyz[1] >= AliL3Transform::GetNPads(crossingrow)) //Here the range is even one more slice away
    {
      cerr<<"One more slice with pad "<<xyz[1]<<endl;
      nslices++;
      if(charge < 0)
	crossingrow = AliL3Transform::GetNRows()-1;
      goto redefine;
    }
  
  if(nslices > fNActiveSlice)
    fNActiveSlice = nslices;
  
  cout<<"Calculated phi "<<phi<<" and pad "<<xyz[1]<<" on row "<<crossingrow<<endl;
  return phi;
}

void AliL3HoughTransformerGlobal::LoadActiveSlices(Bool_t binary)
{
  if(fMemHandler)
    UnloadActiveSlices();
  fMemHandler = new AliL3MemHandler*[(fNActiveSlice*2 + 1)];
  Char_t filename[1024];
  UInt_t dummy;
  Int_t i=0,slice;
  for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
    {
      if(sl < 0 || sl < 18 && GetSlice() >= 18)
	slice = sl + 18;
      else if(sl > 35 || sl > 17 && GetSlice() <= 17)
	slice = sl-18;
      else
	slice = sl;
      cout<<"Loading slice "<<slice<<endl;
      fMemHandler[i] = new AliL3FileHandler();
      fMemHandler[i]->Init(slice,-1);
      if(binary)
	{
	  sprintf(filename,"%s/binaries/digits_%d_%d_%d.raw",fPath,fEvent,slice,-1);
	  fMemHandler[i]->SetBinaryInput(filename);
	  fMemHandler[i]->CompBinary2Memory(dummy);
	  fMemHandler[i++]->CloseBinaryInput();
	}
      else
	{
	  fMemHandler[i]->SetAliInput("/data1/AliRoot/1track0.4_digits.root");
	  fMemHandler[i]->AliAltroDigits2Memory(dummy,fEvent);
	  fMemHandler[i++]->CloseAliInput();
	}
    }
  
}

void AliL3HoughTransformerGlobal::UnloadActiveSlices()
{
  if(!fMemHandler)
    return;
  for(Int_t i=0; i<=fNActiveSlice*2; i++)
    {
      if(!fMemHandler[i]) continue;
      delete fMemHandler[i];
    }
  delete [] fMemHandler;
  fMemHandler=0;
}

Int_t AliL3HoughTransformerGlobal::LoadClusterSeeds(Seed *seeds)
{
  Char_t filename[1024];
  UInt_t npoints;
  sprintf(filename,"%s/hough/points_%d_%d_%d.raw",fPath,fEvent,GetSlice(),-1);
  //sprintf(filename,"../tracker/points_%d_%d_%d.raw",fEvent,GetSlice(),-1);
  AliL3MemHandler mem;
  if(!mem.SetBinaryInput(filename))
    {
      cerr<<"AliL3HoughTransformerGlobal::LoadClusterSeeds : Cannot open file "<<filename<<endl;
      exit(5);
    }
  AliL3SpacePointData *points = (AliL3SpacePointData*)mem.Allocate();
  mem.Binary2Memory(npoints,points);
  mem.CloseBinaryInput();
  
  Int_t counter=0;
  for(UInt_t i=0; i<npoints; i++)
    {
      Int_t lrow = (Int_t)points[i].fPadRow;
      if(lrow < fSeedPadRow) continue;
      if(lrow > fSeedPadRow) break;
      if(fabs(points[i].fY) > AliL3Transform::GetMaxY(lrow))
	{
	  cerr<<"AliL3HoughTransformerGlobal::LoadClusterSeeds : Seeds seems not to be in local coordinates: "
	      <<points[i].fY<<endl;
	  exit(5);
	}
      Float_t xyz[3] = {AliL3Transform::Row2X(lrow),points[i].fY,points[i].fZ};
      Double_t eta = AliL3Transform::GetEta(xyz);
      seeds[counter].fPhi = atan2(xyz[1],xyz[0]);
      seeds[counter].fRadius = sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
      seeds[counter].fIndex = GetEtaIndex(eta);
      seeds[counter++].fEta = eta;
    }
  cout<<"Loaded "<<counter<<" cluster seeds on slice "<<GetSlice()<<" padrow "<<fSeedPadRow<<endl;
  mem.Free();
  return counter;
}

void AliL3HoughTransformerGlobal::DisplayActiveRegion(TH2F *hist,Int_t eta_index)
{
  //Fill the active region in a histogram
  
  Int_t i=0,sector,row,slice;
  UInt_t dummy=0;
  Float_t xyz[3];
  for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
    {
      if(sl < 0 || sl < 18 && GetSlice() >= 18)
	slice = sl + 18;
      else if(sl > 35 || sl > 17 && GetSlice() <= 17)
	slice = sl-18;
      else
	slice = sl;
      cout<<"Displaying slice "<<slice<<endl;
      AliL3DigitRowData *rowPt = (AliL3DigitRowData*)fMemHandler[i++]->GetDataPointer(dummy);
      for(Int_t padrow=0; padrow<AliL3Transform::GetNRows(); padrow++)
	{
	  AliL3DigitData *digits = (AliL3DigitData*)rowPt->fDigitData;
	  for(UInt_t j=0; j<rowPt->fNDigit; j++)
	    {
	      Int_t pad = digits[j].fPad;
	      if(i==1 && pad < fPadMin[padrow])
 		continue;
	      if(i==fNActiveSlice*2+1 && pad>fPadMax[padrow])
		continue;
	      Int_t time = digits[j].fTime;
	      AliL3Transform::Slice2Sector(slice,padrow,sector,row);
	      AliL3Transform::Raw2Local(xyz,sector,row,pad,time);
	     
	      Rotate(xyz,i-1-fNActiveSlice);
	      
	      Double_t eta = AliL3Transform::GetEta(xyz);
	      if(GetEtaIndex(eta) == eta_index)
		hist->Fill(xyz[0],xyz[1]);
	    }
	  AliL3MemHandler::UpdateRowPointer(rowPt);
	}
    }
}
Commit	Line	Data
3e87ef69	1	// @(#) $Id$
	2
	3	// Author: Anders Vestbo <mailto:vestbo@fi.uib.no>
	4	//*-- Copyright &copy ALICE HLT Group
	5
	6	#include "AliL3StandardIncludes.h"
	7
	8	#include "AliL3Logging.h"
	9	#include "AliL3HoughTransformerGlobal.h"
	10	#include "AliL3FileHandler.h"
	11	#include "AliL3Transform.h"
	12	#include "AliL3DigitData.h"
	13	#include "AliL3Track.h"
	14	#include "AliL3Histogram.h"
	15	#include "AliL3TrackArray.h"
	16	#include "AliL3HoughMaxFinder.h"
	17	#include "AliL3HoughTrack.h"
	18	#include "AliL3SpacePointData.h"
	19
	20	#include <TH2.h>
	21
	22	#if GCCVERSION == 3
	23	using namespace std;
	24	#endif
	25
	26	//_____________________________________________________________
	27	// AliL3HoughTransformerGlobal
	28	//
	29	// Hough transformation class
	30	//
	31
	32	ClassImp(AliL3HoughTransformerGlobal)
	33
	34	AliL3HoughTransformerGlobal::AliL3HoughTransformerGlobal()
	35	{
	36	fPadMin=0;
	37	fPadMax=0;
	38	fNActiveSlice=0;
	39	fMemHandler=0;
	40	fEvent=0;
	41	fPsi=0;
	42	fPtMin=0;
	43	fTracks=0;
	44	fPeakFinder=0;
	45	fSeedPadRow=-1;
	46	}
	47
	48	AliL3HoughTransformerGlobal::AliL3HoughTransformerGlobal(Char_t *path,Int_t event)
	49	{
	50	strcpy(fPath,path);
	51	fEvent=event;
	52	fMemHandler=0;
	53	fPadMin=0;
	54	fPadMax=0;
	55	fPsi=0;
	56	fPtMin=0;
	57	fNActiveSlice=0;
	58	fTracks = new AliL3TrackArray("AliL3HoughTrack");
	59	fPeakFinder = new AliL3HoughMaxFinder("KappaPhi",1000);
	60	}
	61
	62	AliL3HoughTransformerGlobal::~AliL3HoughTransformerGlobal()
	63	{
	64	if(fPadMin)
65	delete [] fPadMin;
66	if(fPadMax)
67	delete [] fPadMax;
68	if(fTracks)
69	delete fTracks;
70	if(fPeakFinder)
71	delete fPeakFinder;
72	UnloadActiveSlices();
73
74	}
75
76	void AliL3HoughTransformerGlobal::CreateHistograms(Int_t nxbin,Int_t nybin)
77	{
78	if(fPsi==0)
79	{
80	cerr<<"AliL3HoughTransformerGlobal::CreateHistograms : Call DefineRegion first"<<endl;
81	exit(5);
82	}
83	Float_t psi = fPsi*180./AliL3Transform::Pi();
84	AliL3HoughTransformer::CreateHistograms(nxbin,fPtMin,nybin,-psi,psi);
85	}
86
87	void AliL3HoughTransformerGlobal::TransformCircleC()
88	{
89
90	Seed *clusters = new Seed[1000];
91	Int_t nclusters = LoadClusterSeeds(clusters);
92
93	Int_t i=0,sector,row,slice;
94	UInt_t dummy=0;
95	Float_t xyz[3],rpe[3],kappa,psi;
96
97	for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
98	{
99	if(sl < 0 \|\| sl < 18 && GetSlice() >= 18)
100	slice = sl + 18;
101	else if(sl > 35 \|\| sl > 17 && GetSlice() <= 17)
102	slice = sl-18;
103	else
104	slice = sl;
105	cout<<"Transforming in slice "<<slice<<endl;
106
107	AliL3DigitRowData rowPt = (AliL3DigitRowData)fMemHandler[i++]->GetDataPointer(dummy);
108
109	for(Int_t padrow=0; padrow<AliL3Transform::GetNRows(); padrow++)
110	{
111	if(padrow == fSeedPadRow) continue;
112	AliL3DigitData digits = (AliL3DigitData)rowPt->fDigitData;
113
114	for(UInt_t j=0; j<rowPt->fNDigit; j++)
115	{
116	Int_t pad = digits[j].fPad;
117
118	if(i==1 && pad < fPadMin[padrow])
119	continue;
120	if(i==fNActiveSlice*2+1 && pad>fPadMax[padrow])
121	continue;
122
123	Int_t time = digits[j].fTime;
124	Int_t charge = digits[j].fCharge;
125
126	if(charge > GetUpperThreshold() \|\| charge < GetLowerThreshold())
127	continue;
128
129	AliL3Transform::Slice2Sector(slice,padrow,sector,row);
130	AliL3Transform::Raw2Local(xyz,sector,row,pad,time);
131
132	Rotate(xyz,i-1-fNActiveSlice);
133
134	AliL3Transform::XYZtoRPhiEta(rpe,xyz);
135	rpe[0] = sqrt(xyz[0]xyz[0] + xyz[1]xyz[1]);
136
137	Int_t eta_index = GetEtaIndex(rpe[2]);
138
139	AliL3Histogram *hist = GetHistogram(eta_index);
140
141	for(Int_t l=0; l<nclusters; l++)
142	{
143	if(clusters[l].fIndex != eta_index) continue;
144	psi = atan( (clusters[l].fRadiussin(rpe[1])-rpe[0]sin(clusters[l].fPhi))/
145	(clusters[l].fRadiuscos(rpe[1])-rpe[0]cos(clusters[l].fPhi)) );
146	kappa = 2*sin(clusters[l].fPhi-psi)/clusters[l].fRadius;
147	if(fabs(kappa) < 1e-33)
148	continue;
149
150	hist->Fill(kappa,psi,(int)rint(log((Float_t)charge)));
151	}
152	}
153	AliL3MemHandler::UpdateRowPointer(rowPt);
154	}
155	}
156	delete [] clusters;
157	}
158
159	void AliL3HoughTransformerGlobal::TransformCircle()
160	{
161
162	Int_t i=0,sector,row,slice;
163	UInt_t dummy=0;
164	Float_t xyz[3],rpe[3],kappa,psi;
165
166	for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
167	{
168	if(sl < 0 \|\| sl < 18 && GetSlice() >= 18)
169	slice = sl + 18;
170	else if(sl > 35 \|\| sl > 17 && GetSlice() <= 17)
171	slice = sl-18;
172	else
173	slice = sl;
174	cout<<"Transforming in slice "<<slice<<endl;
175
176	AliL3DigitRowData rowPt = (AliL3DigitRowData)fMemHandler[i++]->GetDataPointer(dummy);
177
178	for(Int_t padrow=0; padrow<AliL3Transform::GetNRows(); padrow++)
179	{
180
181	AliL3DigitData digits = (AliL3DigitData)rowPt->fDigitData;
182
183	for(UInt_t j=0; j<rowPt->fNDigit; j++)
184	{
185	Int_t pad = digits[j].fPad;
186
187	if(i==1 && pad < fPadMin[padrow])
188	continue;
189	if(i==fNActiveSlice*2+1 && pad>fPadMax[padrow])
190	continue;
191
192	Int_t time = digits[j].fTime;
193	Int_t charge = digits[j].fCharge;
194
195	if(charge > GetUpperThreshold() \|\| charge < GetLowerThreshold())
196	continue;
197
198	AliL3Transform::Slice2Sector(slice,padrow,sector,row);
199	AliL3Transform::Raw2Local(xyz,sector,row,pad,time);
200
201	Rotate(xyz,i-1-fNActiveSlice);
202
203	AliL3Transform::XYZtoRPhiEta(rpe,xyz);
204	rpe[0] = sqrt(xyz[0]xyz[0] + xyz[1]xyz[1]);
205
206	Int_t eta_index = GetEtaIndex(rpe[2]);
207
208	AliL3Histogram *hist = GetHistogram(eta_index);
209
210	for(Int_t b=hist->GetFirstYbin(); b<=hist->GetLastYbin(); b++)
211	{
212	psi = hist->GetBinCenterY(b);
213	kappa = 2*sin(rpe[1] - psi)/rpe[0];
214
215	if(fabs(kappa) < 1e-33)
216	continue;
217
218	hist->Fill(kappa,psi,(int)rint(log((Float_t)charge)));
219	}
220	}
221	AliL3MemHandler::UpdateRowPointer(rowPt);
222	}
223	}
224	}
225
226	void AliL3HoughTransformerGlobal::VerifyTracks(AliL3TrackArray *tracks,Int_t &index)
227	{
228	for(int i=index; i<tracks->GetNTracks(); i++)
229	{
230	AliL3HoughTrack tr = (AliL3HoughTrack)tracks->GetCheckedTrack(i);
231	if(!tr) continue;
232
233	Float_t angle=0;
234	AliL3Transform::Local2GlobalAngle(&angle,GetSlice());
235	if(!tr->CalculateReferencePoint(angle,AliL3Transform::Row2X(fSeedPadRow)))
236	{
237	tracks->Remove(i);
238	continue;
239	}
240	Int_t sector,row;
241	AliL3Transform::Slice2Sector(GetSlice(),fSeedPadRow,sector,row);
242	float xyz[3] = {tr->GetPointX(),tr->GetPointY(),tr->GetPointZ()};
243	AliL3Transform::Global2Raw(xyz,sector,row);
244	if(xyz[1]<0 \|\| xyz[1]>=AliL3Transform::GetNPads(fSeedPadRow) \|\|
245	xyz[2]<0 \|\| xyz[2]>=AliL3Transform::GetNTimeBins())
246	tracks->Remove(i);
247	}
248	tracks->Compress();
249	index = tracks->GetNTracks();
250	}
251
252	void AliL3HoughTransformerGlobal::FindPeaks(AliL3Histogram *hist,Float_t eta)
253	{
254
255	fPeakFinder->Reset();
256	fPeakFinder->SetHistogram(hist);
257	fPeakFinder->FindAbsMaxima();
258	if(fPeakFinder->GetWeight(0) < 1000)
259	return;
260
261	AliL3HoughTrack track = (AliL3HoughTrack)fTracks->NextTrack();
262	track->SetTrackParameters(fPeakFinder->GetXPeak(0),fPeakFinder->GetYPeak(0),fPeakFinder->GetWeight(0));
263	track->SetEta(eta);
264	track->SetRowRange(AliL3Transform::GetFirstRow(0),AliL3Transform::GetLastRow(5));
265	}
266
267	void AliL3HoughTransformerGlobal::Rotate(Float_t *xyz,Int_t rel_slice)
268	{
269	//Rotate coordinates from one slice to the slice relative to it;
270	//-1 means lower
271	//1 means upper
272
273	Float_t angle = (Float_t)rel_slice*AliL3Transform::Deg2Rad(20);
274	Float_t x=xyz[0],y=xyz[1];
275	xyz[0] = xcos(angle) - ysin(angle);
276	xyz[1] = xsin(angle) + ycos(angle);
277	}
278
279
280	void AliL3HoughTransformerGlobal::DefineRegion(Float_t minpt,Float_t linephi,Int_t seedpadrow)
281	{
282	//Setup the region to be included in the transform
283	//This function should be called only once, since it is the same for all slices.
284
285	fSeedPadRow=seedpadrow;
286	fPtMin = minpt;
287
288	fPadMin = new Int_t[AliL3Transform::GetNRows()];
289	fPadMax = new Int_t[AliL3Transform::GetNRows()];
290
291	//Phirange of data which should be included in the transform
292	//Here we assume a min pt to define it; fPtMin
293	//Based on pt (kappa) and the two points; origo and middle point, we can get psi angle
294
295	//Calculate the upper point, the lower point is symmetrical around the x-axis
296	//The track in this calculation has a positive charge, and the kappa sign is the opposite:
297
298	Float_t xyz[3],phi,phi2;
299
300	phi = CalculateBorder(xyz,-1); //upward bending track
301	phi2 = CalculateBorder(xyz,1); //downward bending track
302	if(phi2 > phi)
303	phi = phi2;
304
305	cout<<"Phiangle "<<phi180/AliL3Transform::Pi()<<" psi "<<fPsi180/AliL3Transform::Pi()<<" nslices "<<fNActiveSlice<<endl;
306
307	Float_t rotangle = fNActiveSlice*20;
308
309	//Calculate the LUT for min/max pad for every padrow, and check which slices we need.
310	Int_t pad,sector,row;
311	for(Int_t i=0; i<AliL3Transform::GetNRows(); i++)
312	{
313	AliL3Transform::Slice2Sector(0,i,sector,row);
314
315	//Lower boundary:
316	pad = AliL3Transform::GetNPads(i)-1;
317	while(pad >= 0)
318	{
319	AliL3Transform::Raw2Local(xyz,sector,row,pad,0);
320	if(AliL3Transform::GetPhi(xyz) > -1.*phi + AliL3Transform::Deg2Rad(rotangle))
321	fPadMin[i] = pad;
322	else
323	break;
324	pad--;
325	}
326
327	//Upper boundary
328	pad = 0;
329	while(pad < AliL3Transform::GetNPads(i))
330	{
331	AliL3Transform::Raw2Local(xyz,sector,row,pad,0);
332	if(AliL3Transform::GetPhi(xyz) < phi - AliL3Transform::Deg2Rad(rotangle))
333	fPadMax[i] = pad;
334	else
335	break;
336	pad++;
337	}
338	}
339
340	cout<<"Padmax "<<fPadMax[155]<<endl;
341
342	}
343
344	Float_t AliL3HoughTransformerGlobal::CalculateBorder(Float_t *xyz,Int_t charge)
345	{
346	Double_t lineradius = sqrt(pow(AliL3Transform::Row2X(fSeedPadRow),2) + pow(AliL3Transform::GetMaxY(fSeedPadRow),2));
347
348	Double_t kappa = -chargeAliL3Transform::GetBField()AliL3Transform::GetBFact()/fPtMin;
349
350	//Calculate the psi angle of the track = emission angle with x-axis in origo
351	if( fabs(lineradius*kappa/2) > 1)
352	{
353	cerr<<"AliL3TransformerGlobal::DefineRegion : Angle too big"<<endl;
354	exit(5);
355	}
356
357	Int_t nslices=0;
358	Float_t psi = AliL3Transform::Deg2Rad(10) - asin(lineradius*kappa/2);
359	if(charge > 0)
360	fPsi=psi;
361
362	AliL3Track track;
363	track.SetFirstPoint(0,0,0);
364	track.SetPt(fPtMin);
365	track.SetPsi(psi);
366	track.SetCharge(charge);
367	track.CalculateHelix();
368
369	Int_t crossingrow=0;
370	if(charge < 0)
371	crossingrow = AliL3Transform::GetNRows()-1;
372
373	Float_t rotangle;
374
375	redefine:
376
377	rotangle = nslices*20;
378
379	if(nslices==0)//here we are in local slice, so we use the appropriate function. a mess of course...
380	{
381	while(!track.GetCrossingPoint(crossingrow,xyz))
382	{
383	if(crossingrow==0)
384	{
385	cerr<<"AliL3HoughTransformerGlobal::DefineRegion : Error calculating point1 on row "<<crossingrow<<endl;
386	exit(5);
387	}
388	crossingrow--;
389	}
390	}
391	else
392	{
393	while(!track.CalculateReferencePoint(AliL3Transform::Deg2Rad(rotangle),AliL3Transform::Row2X(crossingrow)))
394	{
395	if(crossingrow==0)
396	{
397	cerr<<"AliL3HoughTransformerGlobal::DefineRegion : Error calculating point2 on row "<<crossingrow<<endl;
398	exit(5);
399	}
400	crossingrow--;
401	}
402
403	xyz[0] = track.GetPointX();
404	xyz[1] = track.GetPointY();
405	xyz[2] = track.GetPointZ();
406	}
407
408	Float_t phi = atan2(xyz[1],xyz[0]);
409
410	//Rotate coordinates back to local coordinates:
411	Rotate(xyz,-1*nslices);
412
413	Int_t sector,row;
414	AliL3Transform::Slice2Sector(0,crossingrow,sector,row);
415	AliL3Transform::Local2Raw(xyz,sector,row);
416	if(xyz[1] < 0)
417	{
418	if(crossingrow>0)
419	{
420	cerr<<"AliL3HoughTransformerGlobal::DefineRegion : Wrong pad, probably a deadzone... "<<xyz[1]<<endl;
421	exit(5);
422	}
423	else
424	return 0;//here you only want the crossing point with the outer padrow
425	}
426	if(xyz[1] >= AliL3Transform::GetNPads(crossingrow)) //Here the range is even one more slice away
427	{
428	cerr<<"One more slice with pad "<<xyz[1]<<endl;
429	nslices++;
430	if(charge < 0)
431	crossingrow = AliL3Transform::GetNRows()-1;
432	goto redefine;
433	}
434
435	if(nslices > fNActiveSlice)
436	fNActiveSlice = nslices;
437
438	cout<<"Calculated phi "<<phi<<" and pad "<<xyz[1]<<" on row "<<crossingrow<<endl;
439	return phi;
440	}
441
442	void AliL3HoughTransformerGlobal::LoadActiveSlices(Bool_t binary)
443	{
444	if(fMemHandler)
445	UnloadActiveSlices();
446	fMemHandler = new AliL3MemHandler[(fNActiveSlice2 + 1)];
447	Char_t filename[1024];
448	UInt_t dummy;
449	Int_t i=0,slice;
450	for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
451	{
452	if(sl < 0 \|\| sl < 18 && GetSlice() >= 18)
453	slice = sl + 18;
454	else if(sl > 35 \|\| sl > 17 && GetSlice() <= 17)
455	slice = sl-18;
456	else
457	slice = sl;
458	cout<<"Loading slice "<<slice<<endl;
459	fMemHandler[i] = new AliL3FileHandler();
460	fMemHandler[i]->Init(slice,-1);
461	if(binary)
462	{
463	sprintf(filename,"%s/binaries/digits_%d_%d_%d.raw",fPath,fEvent,slice,-1);
464	fMemHandler[i]->SetBinaryInput(filename);
465	fMemHandler[i]->CompBinary2Memory(dummy);
466	fMemHandler[i++]->CloseBinaryInput();
467	}
468	else
469	{
470	fMemHandler[i]->SetAliInput("/data1/AliRoot/1track0.4_digits.root");
471	fMemHandler[i]->AliAltroDigits2Memory(dummy,fEvent);
472	fMemHandler[i++]->CloseAliInput();
473	}
474	}
475
476	}
477
478	void AliL3HoughTransformerGlobal::UnloadActiveSlices()
479	{
480	if(!fMemHandler)
481	return;
482	for(Int_t i=0; i<=fNActiveSlice*2; i++)
483	{
484	if(!fMemHandler[i]) continue;
485	delete fMemHandler[i];
486	}
487	delete [] fMemHandler;
488	fMemHandler=0;
489	}
490
491	Int_t AliL3HoughTransformerGlobal::LoadClusterSeeds(Seed *seeds)
492	{
493	Char_t filename[1024];
494	UInt_t npoints;
495	sprintf(filename,"%s/hough/points_%d_%d_%d.raw",fPath,fEvent,GetSlice(),-1);
496	//sprintf(filename,"../tracker/points_%d_%d_%d.raw",fEvent,GetSlice(),-1);
497	AliL3MemHandler mem;
498	if(!mem.SetBinaryInput(filename))
499	{
500	cerr<<"AliL3HoughTransformerGlobal::LoadClusterSeeds : Cannot open file "<<filename<<endl;
501	exit(5);
502	}
503	AliL3SpacePointData points = (AliL3SpacePointData)mem.Allocate();
504	mem.Binary2Memory(npoints,points);
505	mem.CloseBinaryInput();
506
507	Int_t counter=0;
508	for(UInt_t i=0; i<npoints; i++)
509	{
510	Int_t lrow = (Int_t)points[i].fPadRow;
511	if(lrow < fSeedPadRow) continue;
512	if(lrow > fSeedPadRow) break;
513	if(fabs(points[i].fY) > AliL3Transform::GetMaxY(lrow))
514	{
515	cerr<<"AliL3HoughTransformerGlobal::LoadClusterSeeds : Seeds seems not to be in local coordinates: "
516	<<points[i].fY<<endl;
517	exit(5);
518	}
519	Float_t xyz[3] = {AliL3Transform::Row2X(lrow),points[i].fY,points[i].fZ};
520	Double_t eta = AliL3Transform::GetEta(xyz);
521	seeds[counter].fPhi = atan2(xyz[1],xyz[0]);
522	seeds[counter].fRadius = sqrt(xyz[0]xyz[0] + xyz[1]xyz[1]);
523	seeds[counter].fIndex = GetEtaIndex(eta);
524	seeds[counter++].fEta = eta;
525	}
526	cout<<"Loaded "<<counter<<" cluster seeds on slice "<<GetSlice()<<" padrow "<<fSeedPadRow<<endl;
527	mem.Free();
528	return counter;
529	}
530
531	void AliL3HoughTransformerGlobal::DisplayActiveRegion(TH2F *hist,Int_t eta_index)
532	{
533	//Fill the active region in a histogram
534
535	Int_t i=0,sector,row,slice;
536	UInt_t dummy=0;
537	Float_t xyz[3];
538	for(Int_t sl=GetSlice()-fNActiveSlice; sl<=GetSlice()+fNActiveSlice; sl++)
539	{
540	if(sl < 0 \|\| sl < 18 && GetSlice() >= 18)
541	slice = sl + 18;
542	else if(sl > 35 \|\| sl > 17 && GetSlice() <= 17)
543	slice = sl-18;
544	else
545	slice = sl;
546	cout<<"Displaying slice "<<slice<<endl;
547	AliL3DigitRowData rowPt = (AliL3DigitRowData)fMemHandler[i++]->GetDataPointer(dummy);
548	for(Int_t padrow=0; padrow<AliL3Transform::GetNRows(); padrow++)
549	{
550	AliL3DigitData digits = (AliL3DigitData)rowPt->fDigitData;
551	for(UInt_t j=0; j<rowPt->fNDigit; j++)
552	{
553	Int_t pad = digits[j].fPad;
554	if(i==1 && pad < fPadMin[padrow])
555	continue;
556	if(i==fNActiveSlice*2+1 && pad>fPadMax[padrow])
557	continue;
558	Int_t time = digits[j].fTime;
559	AliL3Transform::Slice2Sector(slice,padrow,sector,row);
560	AliL3Transform::Raw2Local(xyz,sector,row,pad,time);
561
562	Rotate(xyz,i-1-fNActiveSlice);
563
564	Double_t eta = AliL3Transform::GetEta(xyz);
565	if(GetEtaIndex(eta) == eta_index)
566	hist->Fill(xyz[0],xyz[1]);
567	}
568	AliL3MemHandler::UpdateRowPointer(rowPt);
569	}
570	}
571	}