[u/mrichter/AliRoot.git] / TPC / AliTPCLaserTrack.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * 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.                  *
 **************************************************************************/

////////////////////////////////////////////////////////////////////////////
//                                                                        //
// Surveyed Laser Track positions                                         //
// the position and direction information are stored in                   //
// the AliExternalTrackParam base class                                   //
// This class extends this information by identification parameters       //
/*

//Dump positions to a tree:
AliTPCLaserTrack::LoadTracks();
TObjArray *arr=AliTPCLaserTrack::GetTracks();
TTreeSRedirector *s=new TTreeSRedirector("LaserTracks.root");
TIter next(arr);
TObject *o=0x0;
while ( (o=next()) ) (*s) << "tracks" << "l.=" << o << "\n";
delete s;

//draw something
TFile f("LaserTracks.root");
TTree *tracks=(TTree*)f.Get("tracks");
tracks->Draw("fVecGY.fElements:fVecGX.fElements");

 tracks->Draw("fVecGY.fElements:fVecGX.fElements>>h(500,-250,250,500,-250,250)","fId<7")
*/
//                                                                        //
////////////////////////////////////////////////////////////////////////////


#include <TObjArray.h>
#include <TFile.h>
#include <TString.h>
#include <TSystem.h>

#include "AliLog.h"
#include "AliCDBManager.h"
#include "AliCDBEntry.h"
#include "AliCDBPath.h"
#include "AliTPCLaserTrack.h"
#include "AliTPCROC.h"

ClassImp(AliTPCLaserTrack)

TObjArray *AliTPCLaserTrack::fgArrLaserTracks=0x0;

AliTPCLaserTrack::AliTPCLaserTrack() :
  AliExternalTrackParam(),
  fId(-1),
  fSide(-1),
  fRod(-1),
  fBundle(-1),
  fBeam(-1),
  fRayLength(0),
  fVecSec(0),       // points vectors - sector
  fVecP2(0),       // points vectors - snp
  fVecPhi(0),       // points vectors - global phi
  fVecGX(0),       // points vectors - globalX
  fVecGY(0),       // points vectors - globalY
  fVecGZ(0),       // points vectors - globalZ
  fVecLX(0),       // points vectors - localX
  fVecLY(0),       // points vectors - localY
  fVecLZ(0)        // points vectors - localZ
{
  //
//   // Default constructor
  //

}

AliTPCLaserTrack::AliTPCLaserTrack(const AliTPCLaserTrack &ltr) :
  AliExternalTrackParam(ltr),
  fId(ltr.fId),
  fSide(ltr.fSide),
  fRod(ltr.fRod),
  fBundle(ltr.fBundle),
  fBeam(ltr.fBeam),
  fRayLength(ltr.fRayLength),
  fVecSec(0),       // points vectors - sector
  fVecP2(0),       // points vectors - snp
  fVecPhi(0),       // points vectors - global phi
  fVecGX(0),       // points vectors - globalX
  fVecGY(0),       // points vectors - globalY
  fVecGZ(0),       // points vectors - globalZ
  fVecLX(0),       // points vectors - localX
  fVecLY(0),       // points vectors - localY
  fVecLZ(0)        // points vectors - localZ
{
  //
  // Default constructor
  //
  fVecSec=new TVectorD(*ltr.fVecSec);       // points vectors - sector
  fVecP2 =new TVectorD(*ltr.fVecP2);       // points vectors - snp
  fVecPhi=new TVectorD(*ltr.fVecPhi);       // points vectors - global phi
  fVecGX =new TVectorD(*ltr.fVecGX);       // points vectors - globalX
  fVecGY =new TVectorD(*ltr.fVecGY);       // points vectors - globalY
  fVecGZ =new TVectorD(*ltr.fVecGZ);       // points vectors - globalZ
  fVecLX =new TVectorD(*ltr.fVecLX);       // points vectors - localX
  fVecLY =new TVectorD(*ltr.fVecLY);       // points vectors - localY
  fVecLZ =new TVectorD(*ltr.fVecLZ);       // points vectors - localY

}

AliTPCLaserTrack::AliTPCLaserTrack(const Int_t id, const Int_t side, const Int_t rod,
		     const Int_t bundle, const Int_t beam,
		     Double_t x, Double_t alpha,
		     const Double_t param[5],
		     const Double_t covar[15], const Float_t rayLength) :
  AliExternalTrackParam(x,alpha,param,covar),
  fId(id),
  fSide(side),
  fRod(rod),
  fBundle(bundle),
  fBeam(beam),
  fRayLength(rayLength),
  fVecSec(new TVectorD(159)),       // points vectors - sector
  fVecP2(new TVectorD(159)),       // points vectors - snp
  fVecPhi(new TVectorD(159)),       // points vectors - global phi
  fVecGX(new TVectorD(159)),       // points vectors - globalX
  fVecGY(new TVectorD(159)),       // points vectors - globalY
  fVecGZ(new TVectorD(159)),       // points vectors - globalZ
  fVecLX(new TVectorD(159)),       // points vectors - localX
  fVecLY(new TVectorD(159)),       // points vectors - localY
  fVecLZ(new TVectorD(159))        // points vectors - localZ

{
  //
  // create laser track from arguments
  //
  
}
//_____________________________________________________________________
AliTPCLaserTrack& AliTPCLaserTrack::operator = (const  AliTPCLaserTrack &source)
{
  //
  // assignment operator
  //
  if (&source == this) return *this;
  new (this) AliTPCLaserTrack(source);
  
  return *this;
}


AliTPCLaserTrack::~AliTPCLaserTrack(){
  //
  // destructor
  //
  delete fVecSec;      //                - sector numbers  
  delete fVecP2;       //                - P2  
  delete fVecPhi;       // points vectors - global phi
  delete fVecGX;       // points vectors - globalX
  delete fVecGY;       // points vectors - globalY
  delete fVecGZ;       // points vectors - globalZ
  delete fVecLX;       // points vectors - localX
  delete fVecLY;       // points vectors - localY
  delete fVecLZ;       // points vectors - localZ
}

void AliTPCLaserTrack::LoadTracks()
{
  //
  // Load all design positions from file into the static array fgArrLaserTracks
  //
  
  if ( fgArrLaserTracks ) return;
  TObjArray *arrLaserTracks = 0x0;
  
  AliCDBManager *man=AliCDBManager::Instance();
  if (!man->GetDefaultStorage() && gSystem->Getenv("ALICE_ROOT")) man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
  if (man->GetDefaultStorage()){
    if (man->GetRun()<0) man->SetRun(0);
    AliCDBEntry *entry=man->Get(AliCDBPath("TPC/Calib/LaserTracks"));
    if (!entry) return;
    arrLaserTracks = (TObjArray*)entry->GetObject();
    entry->SetOwner(kTRUE);
  } else {
    if (!gSystem->AccessPathName("LaserTracks.root")){
      TFile f("LaserTracks.root");
      arrLaserTracks=(TObjArray*)f.Get("arrLaserTracks");
      f.Close();
    }
  }
  if ( !arrLaserTracks ) {
//	AliWarning(Form("Could not get laser position data from file: '%s'",fgkDataFileName));
    return;
  }
  
  arrLaserTracks->SetOwner();
  
  fgArrLaserTracks = new TObjArray(fgkNLaserTracks);
  fgArrLaserTracks->SetOwner();
  for (Int_t itrack=0; itrack<fgkNLaserTracks; itrack++){
    AliTPCLaserTrack *ltr = (AliTPCLaserTrack*)arrLaserTracks->At(itrack);
    if ( !ltr ){
//	    AliWarning(Form("No informatino found for Track %d!",itrack));
      continue;
    }
    ltr->UpdatePoints();
    fgArrLaserTracks->AddAt(new AliTPCLaserTrack(*ltr),itrack);
  }

  delete arrLaserTracks;
}


void AliTPCLaserTrack::UpdatePoints(){
  //
  // update track points
  //
  const Double_t kMaxSnp=0.97;
  AliTPCROC* roc = AliTPCROC::Instance();
  //
  //
  if (!fVecSec){
    fVecSec=new TVectorD(159);
    fVecP2 =new TVectorD(159);       //                - P2  
    fVecPhi=new TVectorD(159);       //                - Phi
    fVecGX=new TVectorD(159);       // points vectors - globalX
    fVecGY=new TVectorD(159);       // points vectors - globalY
    fVecGZ=new TVectorD(159);       // points vectors - globalZ
    fVecLX=new TVectorD(159);       // points vectors - localX
    fVecLY=new TVectorD(159);       // points vectors - localY
    fVecLZ=new TVectorD(159);       // points vectors - localZ

  }
  for (Int_t irow=158; irow>=0; irow--){
    (*fVecSec)[irow]= -1;       //                -
    (*fVecP2)[irow] = 0;       //                - P2  -snp
    (*fVecPhi)[irow]= 0;       //                - global phi
    (*fVecGX)[irow] = 0;       // points vectors - globalX
    (*fVecGY)[irow] = 0;       // points vectors - globalY
    (*fVecGZ)[irow] = 0;       // points vectors - globalZ
    (*fVecLX)[irow] = 0;       // points vectors - localX
    (*fVecLY)[irow] = 0;       // points vectors - localY
    (*fVecLZ)[irow] = 0;       // points vectors - localZ

  }
  Double_t gxyz[3];
  Double_t lxyz[3];
  AliTPCLaserTrack*ltrp=new AliTPCLaserTrack(*this);  //make temporary track

  for (Int_t irow=158; irow>=0; irow--){
    UInt_t srow = irow;
    Int_t sector=0;
   
    if (srow >=roc->GetNRows(0)) {
      srow-=roc->GetNRows(0);
      sector=36    ;
    }
    lxyz[0]= roc->GetPadRowRadii(sector,srow);
    if (!ltrp->PropagateTo(lxyz[0],5)) break;
    ltrp->GetXYZ(gxyz);
    //
    Double_t alpha=TMath::ATan2(gxyz[1],gxyz[0]);
    if (alpha<0) alpha+=2*TMath::Pi();
    sector      +=TMath::Nint(-0.5+9*alpha/TMath::Pi());
    if (gxyz[2]<0) sector+=18;
    Double_t salpha   = TMath::Pi()*(sector+0.5)/9.;    
    if (!ltrp->Rotate(salpha)) break;
    if (!ltrp->PropagateTo(lxyz[0],5)) break;
    if (TMath::Abs(ltrp->GetSnp())>kMaxSnp) break;
    ltrp->GetXYZ(gxyz);
    lxyz[1]=ltrp->GetY();
    lxyz[2]=ltrp->GetZ();
    (*fVecSec)[irow]= sector;
    (*fVecP2)[irow] = ltrp->GetSnp();                 //                - P2  -snp
    (*fVecPhi)[irow]= TMath::ATan2(gxyz[1],gxyz[0]);  //                - global phi
    (*fVecGX)[irow] = gxyz[0];       // points vectors - globalX
    (*fVecGY)[irow] = gxyz[1];       // points vectors - globalY
    (*fVecGZ)[irow] = gxyz[2];       // points vectors - globalZ
    (*fVecLX)[irow] = lxyz[0];       // points vectors - localX
    (*fVecLY)[irow] = lxyz[1];       // points vectors - localY
    (*fVecLZ)[irow] = lxyz[2];       // points vectors - localZ

  }
  delete ltrp;  // delete temporary track
}

Int_t AliTPCLaserTrack::IdentifyTrack(AliExternalTrackParam *track, Int_t side)
{
  //
  // Find the laser track which is corresponding closest to 'track'
  // return its id
  //
  // 
  const  Float_t   kMaxdphi=0.2;
  const  Float_t   kMaxdphiP=0.05;
  const  Float_t   kMaxdz=40;

  if ( !fgArrLaserTracks ) LoadTracks();
  TObjArray *arrTracks = GetTracks();
  Double_t lxyz0[3];
  Double_t lxyz1[3];
  Double_t pxyz0[3];
  Double_t pxyz1[3];
  track->GetXYZ(lxyz0);
  track->GetDirection(pxyz0);
  //
  Float_t mindist=10; // maxima minimal distance
  Int_t id = -1;
  for (Int_t itrack=0; itrack<fgkNLaserTracks; itrack++){    
    AliTPCLaserTrack *ltr = (AliTPCLaserTrack*)arrTracks->UncheckedAt(itrack);
    if (side>=0) if (ltr->GetSide()!=side) continue;
    Double_t * kokot = (Double_t*)ltr->GetParameter();
    kokot[4]=-0.0000000001;
    //
    ltr->GetXYZ(lxyz1);
    if (TMath::Abs(lxyz1[2]-lxyz0[2])>kMaxdz) continue;
    // phi position
    Double_t phi0 = TMath::ATan2(lxyz0[1],lxyz0[0]);
    Double_t phi1 = TMath::ATan2(lxyz1[1],lxyz1[0]);
    if (TMath::Abs(phi0-phi1)>kMaxdphi) continue;
    // phi direction
    ltr->GetDirection(pxyz1);
    Float_t direction= pxyz0[0]*pxyz1[0] + pxyz0[1]*pxyz1[1] + pxyz0[2]*pxyz1[2];
    Float_t distdir = (1-TMath::Abs(direction))*90.; //distance at entrance
    if (1-TMath::Abs(direction)>kMaxdphiP)
      continue;
    //
    Float_t dist=0;
    dist+=TMath::Abs(lxyz1[0]-lxyz0[0]);
    dist+=TMath::Abs(lxyz1[1]-lxyz0[1]);
    //    dist+=TMath::Abs(lxyz1[2]-lxyz0[2]); //z is not used for distance calculation
    dist+=distdir;
    //    
    if (id<0)  {
      id =itrack; 
      mindist=dist; 
      continue;
    }
    if (dist>mindist) continue;
    id = itrack;
    mindist=dist;
  }
  return id;
}
Commit	Line	Data
23b18f4e	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
7442bceb	16	////////////////////////////////////////////////////////////////////////////
	17	// //
	18	// Surveyed Laser Track positions //
	19	// the position and direction information are stored in //
	20	// the AliExternalTrackParam base class //
	21	// This class extends this information by identification parameters //
	22	/*
	23
	24	//Dump positions to a tree:
	25	AliTPCLaserTrack::LoadTracks();
	26	TObjArray *arr=AliTPCLaserTrack::GetTracks();
	27	TTreeSRedirector *s=new TTreeSRedirector("LaserTracks.root");
	28	TIter next(arr);
	29	TObject *o=0x0;
	30	while ( (o=next()) ) (*s) << "tracks" << "l.=" << o << "\n";
	31	delete s;
	32
	33	//draw something
	34	TFile f("LaserTracks.root");
	35	TTree tracks=(TTree)f.Get("tracks");
	36	tracks->Draw("fVecGY.fElements:fVecGX.fElements");
	37
	38	tracks->Draw("fVecGY.fElements:fVecGX.fElements>>h(500,-250,250,500,-250,250)","fId<7")
	39	*/
	40	// //
	41	////////////////////////////////////////////////////////////////////////////
	42
23b18f4e	43
	44	#include <TObjArray.h>
	45	#include <TFile.h>
	46	#include <TString.h>
	47	#include <TSystem.h>
	48
	49	#include "AliLog.h"
7442bceb	50	#include "AliCDBManager.h"
	51	#include "AliCDBEntry.h"
	52	#include "AliCDBPath.h"
23b18f4e	53	#include "AliTPCLaserTrack.h"
e955044f	54	#include "AliTPCROC.h"
23b18f4e	55
	56	ClassImp(AliTPCLaserTrack)
	57
	58	TObjArray *AliTPCLaserTrack::fgArrLaserTracks=0x0;
	59
	60	AliTPCLaserTrack::AliTPCLaserTrack() :
	61	AliExternalTrackParam(),
	62	fId(-1),
	63	fSide(-1),
	64	fRod(-1),
	65	fBundle(-1),
7804aba0	66	fBeam(-1),
e955044f	67	fRayLength(0),
	68	fVecSec(0), // points vectors - sector
	69	fVecP2(0), // points vectors - snp
	70	fVecPhi(0), // points vectors - global phi
	71	fVecGX(0), // points vectors - globalX
	72	fVecGY(0), // points vectors - globalY
	73	fVecGZ(0), // points vectors - globalZ
	74	fVecLX(0), // points vectors - localX
	75	fVecLY(0), // points vectors - localY
	76	fVecLZ(0) // points vectors - localZ
23b18f4e	77	{
23b18f4e	78	//
7442bceb	79	// // Default constructor
23b18f4e	80	//
	81
	82	}
	83
7804aba0	84	AliTPCLaserTrack::AliTPCLaserTrack(const AliTPCLaserTrack &ltr) :
23b18f4e	85	AliExternalTrackParam(ltr),
	86	fId(ltr.fId),
	87	fSide(ltr.fSide),
	88	fRod(ltr.fRod),
	89	fBundle(ltr.fBundle),
7804aba0	90	fBeam(ltr.fBeam),
e955044f	91	fRayLength(ltr.fRayLength),
	92	fVecSec(0), // points vectors - sector
	93	fVecP2(0), // points vectors - snp
	94	fVecPhi(0), // points vectors - global phi
	95	fVecGX(0), // points vectors - globalX
	96	fVecGY(0), // points vectors - globalY
	97	fVecGZ(0), // points vectors - globalZ
	98	fVecLX(0), // points vectors - localX
	99	fVecLY(0), // points vectors - localY
	100	fVecLZ(0) // points vectors - localZ
23b18f4e	101	{
	102	//
	103	// Default constructor
	104	//
e955044f	105	fVecSec=new TVectorD(*ltr.fVecSec); // points vectors - sector
	106	fVecP2 =new TVectorD(*ltr.fVecP2); // points vectors - snp
	107	fVecPhi=new TVectorD(*ltr.fVecPhi); // points vectors - global phi
	108	fVecGX =new TVectorD(*ltr.fVecGX); // points vectors - globalX
	109	fVecGY =new TVectorD(*ltr.fVecGY); // points vectors - globalY
	110	fVecGZ =new TVectorD(*ltr.fVecGZ); // points vectors - globalZ
	111	fVecLX =new TVectorD(*ltr.fVecLX); // points vectors - localX
	112	fVecLY =new TVectorD(*ltr.fVecLY); // points vectors - localY
	113	fVecLZ =new TVectorD(*ltr.fVecLZ); // points vectors - localY
23b18f4e	114
	115	}
	116
	117	AliTPCLaserTrack::AliTPCLaserTrack(const Int_t id, const Int_t side, const Int_t rod,
	118	const Int_t bundle, const Int_t beam,
	119	Double_t x, Double_t alpha,
	120	const Double_t param[5],
7804aba0	121	const Double_t covar[15], const Float_t rayLength) :
23b18f4e	122	AliExternalTrackParam(x,alpha,param,covar),
	123	fId(id),
	124	fSide(side),
	125	fRod(rod),
	126	fBundle(bundle),
7804aba0	127	fBeam(beam),
e955044f	128	fRayLength(rayLength),
	129	fVecSec(new TVectorD(159)), // points vectors - sector
	130	fVecP2(new TVectorD(159)), // points vectors - snp
	131	fVecPhi(new TVectorD(159)), // points vectors - global phi
	132	fVecGX(new TVectorD(159)), // points vectors - globalX
	133	fVecGY(new TVectorD(159)), // points vectors - globalY
	134	fVecGZ(new TVectorD(159)), // points vectors - globalZ
	135	fVecLX(new TVectorD(159)), // points vectors - localX
	136	fVecLY(new TVectorD(159)), // points vectors - localY
	137	fVecLZ(new TVectorD(159)) // points vectors - localZ
	138
23b18f4e	139	{
	140	//
	141	// create laser track from arguments
	142	//
e955044f	143
23b18f4e	144	}
7804aba0	145	//_____________________________________________________________________
	146	AliTPCLaserTrack& AliTPCLaserTrack::operator = (const AliTPCLaserTrack &source)
	147	{
	148	//
	149	// assignment operator
	150	//
	151	if (&source == this) return *this;
	152	new (this) AliTPCLaserTrack(source);
	153
	154	return *this;
	155	}
23b18f4e	156
e955044f	157
	158	AliTPCLaserTrack::~AliTPCLaserTrack(){
	159	//
	160	// destructor
	161	//
	162	delete fVecSec; // - sector numbers
	163	delete fVecP2; // - P2
	164	delete fVecPhi; // points vectors - global phi
	165	delete fVecGX; // points vectors - globalX
	166	delete fVecGY; // points vectors - globalY
	167	delete fVecGZ; // points vectors - globalZ
	168	delete fVecLX; // points vectors - localX
	169	delete fVecLY; // points vectors - localY
	170	delete fVecLZ; // points vectors - localZ
	171	}
	172
23b18f4e	173	void AliTPCLaserTrack::LoadTracks()
23b18f4e	174	{
7442bceb	175	//
	176	// Load all design positions from file into the static array fgArrLaserTracks
	177	//
	178
	179	if ( fgArrLaserTracks ) return;
78f17711	180	TObjArray *arrLaserTracks = 0x0;
7442bceb	181
7442bceb	182	AliCDBManager *man=AliCDBManager::Instance();
78f17711	183	if (!man->GetDefaultStorage() && gSystem->Getenv("ALICE_ROOT")) man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
	184	if (man->GetDefaultStorage()){
	185	if (man->GetRun()<0) man->SetRun(0);
	186	AliCDBEntry *entry=man->Get(AliCDBPath("TPC/Calib/LaserTracks"));
768e46f1	187	if (!entry) return;
78f17711	188	arrLaserTracks = (TObjArray*)entry->GetObject();
	189	entry->SetOwner(kTRUE);
	190	} else {
	191	if (!gSystem->AccessPathName("LaserTracks.root")){
	192	TFile f("LaserTracks.root");
	193	arrLaserTracks=(TObjArray*)f.Get("arrLaserTracks");
	194	f.Close();
	195	}
	196	}
7442bceb	197	if ( !arrLaserTracks ) {
23b18f4e	198	// AliWarning(Form("Could not get laser position data from file: '%s'",fgkDataFileName));
7442bceb	199	return;
	200	}
	201
78f17711	202	arrLaserTracks->SetOwner();
78f17711	203
7442bceb	204	fgArrLaserTracks = new TObjArray(fgkNLaserTracks);
78f17711	205	fgArrLaserTracks->SetOwner();
7442bceb	206	for (Int_t itrack=0; itrack<fgkNLaserTracks; itrack++){
	207	AliTPCLaserTrack ltr = (AliTPCLaserTrack)arrLaserTracks->At(itrack);
	208	if ( !ltr ){
23b18f4e	209	// AliWarning(Form("No informatino found for Track %d!",itrack));
7442bceb	210	continue;
23b18f4e	211	}
7442bceb	212	ltr->UpdatePoints();
	213	fgArrLaserTracks->AddAt(new AliTPCLaserTrack(*ltr),itrack);
	214	}
78f17711	215
78f17711	216	delete arrLaserTracks;
23b18f4e	217	}
23b18f4e	218
f1fcccb7	219
e955044f	220	void AliTPCLaserTrack::UpdatePoints(){
	221	//
	222	// update track points
	223	//
7442bceb	224	const Double_t kMaxSnp=0.97;
e955044f	225	AliTPCROC* roc = AliTPCROC::Instance();
	226	//
	227	//
	228	if (!fVecSec){
	229	fVecSec=new TVectorD(159);
	230	fVecP2 =new TVectorD(159); // - P2
	231	fVecPhi=new TVectorD(159); // - Phi
	232	fVecGX=new TVectorD(159); // points vectors - globalX
	233	fVecGY=new TVectorD(159); // points vectors - globalY
	234	fVecGZ=new TVectorD(159); // points vectors - globalZ
	235	fVecLX=new TVectorD(159); // points vectors - localX
	236	fVecLY=new TVectorD(159); // points vectors - localY
	237	fVecLZ=new TVectorD(159); // points vectors - localZ
	238
	239	}
	240	for (Int_t irow=158; irow>=0; irow--){
7442bceb	241	(*fVecSec)[irow]= -1; // -
e955044f	242	(*fVecP2)[irow] = 0; // - P2 -snp
	243	(*fVecPhi)[irow]= 0; // - global phi
	244	(*fVecGX)[irow] = 0; // points vectors - globalX
	245	(*fVecGY)[irow] = 0; // points vectors - globalY
	246	(*fVecGZ)[irow] = 0; // points vectors - globalZ
	247	(*fVecLX)[irow] = 0; // points vectors - localX
	248	(*fVecLY)[irow] = 0; // points vectors - localY
	249	(*fVecLZ)[irow] = 0; // points vectors - localZ
	250
	251	}
	252	Double_t gxyz[3];
	253	Double_t lxyz[3];
	254	AliTPCLaserTrackltrp=new AliTPCLaserTrack(this); //make temporary track
	255
	256	for (Int_t irow=158; irow>=0; irow--){
	257	UInt_t srow = irow;
	258	Int_t sector=0;
	259
	260	if (srow >=roc->GetNRows(0)) {
	261	srow-=roc->GetNRows(0);
	262	sector=36 ;
	263	}
	264	lxyz[0]= roc->GetPadRowRadii(sector,srow);
	265	if (!ltrp->PropagateTo(lxyz[0],5)) break;
	266	ltrp->GetXYZ(gxyz);
	267	//
	268	Double_t alpha=TMath::ATan2(gxyz[1],gxyz[0]);
	269	if (alpha<0) alpha+=2*TMath::Pi();
	270	sector +=TMath::Nint(-0.5+9*alpha/TMath::Pi());
fb962ae3	271	if (gxyz[2]<0) sector+=18;
e955044f	272	Double_t salpha = TMath::Pi()*(sector+0.5)/9.;
	273	if (!ltrp->Rotate(salpha)) break;
	274	if (!ltrp->PropagateTo(lxyz[0],5)) break;
	275	if (TMath::Abs(ltrp->GetSnp())>kMaxSnp) break;
	276	ltrp->GetXYZ(gxyz);
	277	lxyz[1]=ltrp->GetY();
	278	lxyz[2]=ltrp->GetZ();
	279	(*fVecSec)[irow]= sector;
	280	(*fVecP2)[irow] = ltrp->GetSnp(); // - P2 -snp
	281	(*fVecPhi)[irow]= TMath::ATan2(gxyz[1],gxyz[0]); // - global phi
	282	(*fVecGX)[irow] = gxyz[0]; // points vectors - globalX
	283	(*fVecGY)[irow] = gxyz[1]; // points vectors - globalY
	284	(*fVecGZ)[irow] = gxyz[2]; // points vectors - globalZ
	285	(*fVecLX)[irow] = lxyz[0]; // points vectors - localX
	286	(*fVecLY)[irow] = lxyz[1]; // points vectors - localY
	287	(*fVecLZ)[irow] = lxyz[2]; // points vectors - localZ
	288
	289	}
	290	delete ltrp; // delete temporary track
	291	}
	292
38b1a1ca	293	Int_t AliTPCLaserTrack::IdentifyTrack(AliExternalTrackParam *track, Int_t side)
23b18f4e	294	{
f1fcccb7	295	//
	296	// Find the laser track which is corresponding closest to 'track'
	297	// return its id
	298	//
	299	//
b51d4393	300	const Float_t kMaxdphi=0.2;
265e5fdb	301	const Float_t kMaxdphiP=0.05;
265e5fdb	302	const Float_t kMaxdz=40;
f1fcccb7	303
	304	if ( !fgArrLaserTracks ) LoadTracks();
	305	TObjArray *arrTracks = GetTracks();
f1fcccb7	306	Double_t lxyz0[3];
	307	Double_t lxyz1[3];
	308	Double_t pxyz0[3];
	309	Double_t pxyz1[3];
	310	track->GetXYZ(lxyz0);
38b1a1ca	311	track->GetDirection(pxyz0);
265e5fdb	312	//
38b1a1ca	313	Float_t mindist=10; // maxima minimal distance
f1fcccb7	314	Int_t id = -1;
38b1a1ca	315	for (Int_t itrack=0; itrack<fgkNLaserTracks; itrack++){
	316	AliTPCLaserTrack ltr = (AliTPCLaserTrack)arrTracks->UncheckedAt(itrack);
	317	if (side>=0) if (ltr->GetSide()!=side) continue;
f1fcccb7	318	Double_t * kokot = (Double_t*)ltr->GetParameter();
f1fcccb7	319	kokot[4]=-0.0000000001;
23b18f4e	320	//
f1fcccb7	321	ltr->GetXYZ(lxyz1);
b51d4393	322	if (TMath::Abs(lxyz1[2]-lxyz0[2])>kMaxdz) continue;
f1fcccb7	323	// phi position
	324	Double_t phi0 = TMath::ATan2(lxyz0[1],lxyz0[0]);
	325	Double_t phi1 = TMath::ATan2(lxyz1[1],lxyz1[0]);
b51d4393	326	if (TMath::Abs(phi0-phi1)>kMaxdphi) continue;
f1fcccb7	327	// phi direction
38b1a1ca	328	ltr->GetDirection(pxyz1);
	329	Float_t direction= pxyz0[0]pxyz1[0] + pxyz0[1]pxyz1[1] + pxyz0[2]*pxyz1[2];
	330	Float_t distdir = (1-TMath::Abs(direction))*90.; //distance at entrance
	331	if (1-TMath::Abs(direction)>kMaxdphiP)
f1fcccb7	332	continue;
23b18f4e	333	//
265e5fdb	334	Float_t dist=0;
	335	dist+=TMath::Abs(lxyz1[0]-lxyz0[0]);
	336	dist+=TMath::Abs(lxyz1[1]-lxyz0[1]);
38b1a1ca	337	// dist+=TMath::Abs(lxyz1[2]-lxyz0[2]); //z is not used for distance calculation
265e5fdb	338	dist+=distdir;
	339	//
	340	if (id<0) {
	341	id =itrack;
	342	mindist=dist;
265e5fdb	343	continue;
	344	}
	345	if (dist>mindist) continue;
	346	id = itrack;
	347	mindist=dist;
f1fcccb7	348	}
f1fcccb7	349	return id;
23b18f4e	350	}
23b18f4e	351