[u/mrichter/AliRoot.git] / MUON / AliMUONHitForRec.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.                  *
 **************************************************************************/

/* $Id$ */

// ------------------------
// Class AliMUONHitForRec
// ------------------------
// Hit for reconstruction in ALICE dimuon spectrometer
// Author: J. Gosset

#include "AliTrackReference.h" 
#include "AliMUONHitForRec.h" 
#include "AliMUONRawCluster.h"
#include "AliMUONHit.h"
#include "AliMUONConstants.h"
#include "AliLog.h"
#include "Riostream.h"

/// \cond CLASSIMP
ClassImp(AliMUONHitForRec) // Class implementation in ROOT context
/// \endcond

  //__________________________________________________________________________
AliMUONHitForRec::AliMUONHitForRec()
  : TObject(),
    fBendingCoor(0.),
    fNonBendingCoor(0.),
    fZ(0.),
    fBendingReso2(0.),
    fNonBendingReso2(0.),
    fChamberNumber(0),
    fDetElemId(0),
    fHitNumber(0),
    fTTRTrack(0),
    fTrackRefSignal(0),
    fNTrackHits(0)
{
/// Default Constructor
 
}

  //__________________________________________________________________________
AliMUONHitForRec::AliMUONHitForRec(AliTrackReference* theGhit)
  : TObject(),
    fBendingCoor(theGhit->Y()),
    fNonBendingCoor(theGhit->X()),
    fZ(theGhit->Z()),
    fBendingReso2(0.),
    fNonBendingReso2(0.),
    fChamberNumber(0),
    fDetElemId(0),
    fHitNumber(0),
    fTTRTrack(0),
    fTrackRefSignal(0),
    fNTrackHits(0)
{
/// Constructor for AliMUONHitForRec from a track ref. hit.
/// Fills the bending, non bending, and Z coordinates,
/// which are taken from the coordinates of the track ref. hit,
/// the track number (track ref. and not TH),
/// and the chamber number (0...).

  // fTrack = theGhit->fTrack; ?????????
  fDetElemId = theGhit->UserId();
  if (fDetElemId) fChamberNumber = fDetElemId / 100 - 1;
  else fChamberNumber = AliMUONConstants::ChamberNumber(fZ);
  // other fields will be updated in
  // AliMUONEventReconstructor::NewHitForRecFromTrackRef
  return;
}

//   //__________________________________________________________________________
// AliMUONHitForRec::AliMUONHitForRec(AliMUONReconstHit* CathCorrel)
// {
//   // Constructor for AliMUONHitForRec from a (cathode correlated) raw cluster.
//   // Fills the bending and non bending coordinates.
//   // Only the first correlation is taken into account.
//   // The bending coordinate is taken from the first cathode.
//   // The non bending coordinate is taken 
//   // from the second cathode if it exists,
//   // from the first one otherwise.
//   fBendingCoor = CathCorrel->fY[3];
//   if (CathCorrel->fCorrelIndex[0] >= 0) fNonBendingCoor = CathCorrel->fX[0];
//   else fNonBendingCoor = CathCorrel->fX[3];
//   return;
// }

  //__________________________________________________________________________
AliMUONHitForRec::AliMUONHitForRec(AliMUONRawCluster* theRawCluster)
  : TObject(),
    fBendingCoor(theRawCluster->GetY(0)),
    fNonBendingCoor(theRawCluster->GetX(0)),
    fZ(0.),
    fBendingReso2(0.),
    fNonBendingReso2(0.),
    fChamberNumber(0),
    fDetElemId(theRawCluster->GetDetElemId()),
    fHitNumber(0),
    fTTRTrack(-1),
    fTrackRefSignal(-1),
    fNTrackHits(0)
{
/// Constructor for AliMUONHitForRec from a raw cluster.
/// Fills the bending and non bending coordinates.

  // other fields will be updated in
  // AliMUONEventReconstructor::AddHitsForRecFromRawClusters,
  return;
}

  //__________________________________________________________________________
AliMUONHitForRec::AliMUONHitForRec (const AliMUONHitForRec& theMUONHitForRec)
  : TObject(theMUONHitForRec),
    fBendingCoor(theMUONHitForRec.fBendingCoor),
    fNonBendingCoor(theMUONHitForRec.fNonBendingCoor),
    fZ(theMUONHitForRec.fZ),
    fBendingReso2(theMUONHitForRec.fBendingReso2),
    fNonBendingReso2(theMUONHitForRec.fNonBendingReso2),
    fChamberNumber(theMUONHitForRec.fChamberNumber),
    fDetElemId(theMUONHitForRec.fDetElemId),
    fHitNumber(theMUONHitForRec.fHitNumber),
    fTTRTrack(theMUONHitForRec.fTTRTrack),
    fTrackRefSignal(theMUONHitForRec.fTrackRefSignal),
    fNTrackHits(theMUONHitForRec.fNTrackHits)
{
/// Copy constructor

}

  //__________________________________________________________________________
AliMUONHitForRec::~AliMUONHitForRec()
{
/// Destructor
}

  //__________________________________________________________________________
AliMUONHitForRec & AliMUONHitForRec::operator=(const AliMUONHitForRec& theMUONHitForRec)
{
/// Assignment operator

  fBendingCoor = theMUONHitForRec.fBendingCoor;
  fNonBendingCoor = theMUONHitForRec.fNonBendingCoor;
  fZ = theMUONHitForRec.fZ;
  fBendingReso2 = theMUONHitForRec.fBendingReso2;
  fNonBendingReso2 = theMUONHitForRec.fNonBendingReso2;
  fChamberNumber = theMUONHitForRec.fChamberNumber;
  fDetElemId = theMUONHitForRec.fDetElemId;
  fHitNumber = theMUONHitForRec.fHitNumber;
  fTTRTrack = theMUONHitForRec.fTTRTrack;
  fTrackRefSignal = theMUONHitForRec.fTrackRefSignal;
  fNTrackHits = theMUONHitForRec.fNTrackHits;
  return *this;
}
  //__________________________________________________________________________
/*AZ
Int_t AliMUONHitForRec::Compare(const TObject* Hit) const
{
  // "Compare" function to sort with increasing chamber number.
  // Returns -1 (0, +1) if ChamberNumber of current HitForRec
  // is smaller than (equal to, larger than) ChamberNumber of Hit
  if (fChamberNumber <  ((AliMUONHitForRec*)Hit)->fChamberNumber) return(-1);
  else if (fChamberNumber == ((AliMUONHitForRec*)Hit)->fChamberNumber) return( 0);
  else return(+1);
}
*/
  //__________________________________________________________________________
Int_t AliMUONHitForRec::Compare(const TObject* Hit) const
{
/// "Compare" function to sort with decreasing Z-coordinate (spectro. MUON z<0).
/// Returns 1 (0, -1) if Z-coordinate of current HitForRec
/// is smaller than (equal to, larger than) Z-coordinate of Hit

  if (fZ <  ((AliMUONHitForRec*)Hit)->fZ) return(1);
  else if (fZ == ((AliMUONHitForRec*)Hit)->fZ) return( 0);
  else return(-1);
}

  //__________________________________________________________________________
Double_t AliMUONHitForRec::NormalizedChi2WithHitForRec(AliMUONHitForRec* hitForRec, Double_t Sigma2Cut) const
{
/// Calculate the normalized Chi2 between the current hitForRec (this) and the hitForRec pointed to by "hitForRec",
/// i.e. the square deviations between the coordinates, in both the bending and the non bending plane,
/// divided by the variance of the same quantities and by "Sigma2Cut".
/// Returns 3 if none of the 2 quantities is OK, something smaller than or equal to 2 otherwise.
/// Would it be more correct to use a real chi square including the non diagonal term ????

  Double_t chi2, chi2Max, diff, normDiff;
  chi2 = 0.0;
  chi2Max = 3.0;
  // coordinate in bending plane
  diff = fBendingCoor - hitForRec->fBendingCoor;
  normDiff = diff * diff / (fBendingReso2 + hitForRec->fBendingReso2) / Sigma2Cut;
  if (normDiff > 1.0) return chi2Max;
  chi2 = chi2 + normDiff;
  // coordinate in non bending plane
  diff = fNonBendingCoor - hitForRec->fNonBendingCoor;
  normDiff = diff * diff / (fNonBendingReso2 + hitForRec->fNonBendingReso2) / Sigma2Cut;
  if (normDiff > 1.0) return chi2Max;
  chi2 = chi2 + normDiff;
  return chi2;
}

//______________________________________________________________________________
void
AliMUONHitForRec::Print(Option_t* /*opt*/) const
{
/// Printing

  cout << "<AliMUONHitForRec> Coordinates (B,NB,Z) = (" 
  << setw(8) << setprecision(5) << fBendingCoor
  << "," << setw(8) << setprecision(5) << fNonBendingCoor << "," 
  << setw(8) << setprecision(5) << fZ << ") "
  << "Reso (B,NB)=(" << setw(8) << setprecision(5) << TMath::Sqrt(fBendingReso2) 
  << "," << setw(8) << setprecision(5) << TMath::Sqrt(fNonBendingReso2)
  << ") " 
  << "Number " << setw(3) << fHitNumber 
  << " within chamber " << setw(3) <<fChamberNumber 
  << " DE " << setw(4) << fDetElemId
  << endl;
}
Commit	Line	Data
	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	// ------------------------
	19	// Class AliMUONHitForRec
	20	// ------------------------
	21	// Hit for reconstruction in ALICE dimuon spectrometer
	22	// Author: J. Gosset
	23
	24	#include "AliTrackReference.h"
	25	#include "AliMUONHitForRec.h"
	26	#include "AliMUONRawCluster.h"
	27	#include "AliMUONHit.h"
	28	#include "AliMUONConstants.h"
	29	#include "AliLog.h"
	30	#include "Riostream.h"
	31
	32	/// \cond CLASSIMP
	33	ClassImp(AliMUONHitForRec) // Class implementation in ROOT context
	34	/// \endcond
	35
	36	//__________________________________________________________________________
	37	AliMUONHitForRec::AliMUONHitForRec()
	38	: TObject(),
	39	fBendingCoor(0.),
	40	fNonBendingCoor(0.),
	41	fZ(0.),
	42	fBendingReso2(0.),
	43	fNonBendingReso2(0.),
	44	fChamberNumber(0),
	45	fDetElemId(0),
	46	fHitNumber(0),
	47	fTTRTrack(0),
	48	fTrackRefSignal(0),
	49	fNTrackHits(0)
	50	{
	51	/// Default Constructor
	52
	53	}
	54
	55	//__________________________________________________________________________
	56	AliMUONHitForRec::AliMUONHitForRec(AliTrackReference* theGhit)
	57	: TObject(),
	58	fBendingCoor(theGhit->Y()),
	59	fNonBendingCoor(theGhit->X()),
	60	fZ(theGhit->Z()),
	61	fBendingReso2(0.),
	62	fNonBendingReso2(0.),
	63	fChamberNumber(0),
	64	fDetElemId(0),
	65	fHitNumber(0),
	66	fTTRTrack(0),
	67	fTrackRefSignal(0),
	68	fNTrackHits(0)
	69	{
	70	/// Constructor for AliMUONHitForRec from a track ref. hit.
	71	/// Fills the bending, non bending, and Z coordinates,
	72	/// which are taken from the coordinates of the track ref. hit,
	73	/// the track number (track ref. and not TH),
	74	/// and the chamber number (0...).
	75
	76	// fTrack = theGhit->fTrack; ?????????
	77	fDetElemId = theGhit->UserId();
	78	if (fDetElemId) fChamberNumber = fDetElemId / 100 - 1;
	79	else fChamberNumber = AliMUONConstants::ChamberNumber(fZ);
	80	// other fields will be updated in
	81	// AliMUONEventReconstructor::NewHitForRecFromTrackRef
	82	return;
	83	}
	84
	85	// //__________________________________________________________________________
	86	// AliMUONHitForRec::AliMUONHitForRec(AliMUONReconstHit* CathCorrel)
	87	// {
	88	// // Constructor for AliMUONHitForRec from a (cathode correlated) raw cluster.
	89	// // Fills the bending and non bending coordinates.
	90	// // Only the first correlation is taken into account.
	91	// // The bending coordinate is taken from the first cathode.
	92	// // The non bending coordinate is taken
	93	// // from the second cathode if it exists,
	94	// // from the first one otherwise.
	95	// fBendingCoor = CathCorrel->fY[3];
	96	// if (CathCorrel->fCorrelIndex[0] >= 0) fNonBendingCoor = CathCorrel->fX[0];
	97	// else fNonBendingCoor = CathCorrel->fX[3];
	98	// return;
	99	// }
	100
	101	//__________________________________________________________________________
	102	AliMUONHitForRec::AliMUONHitForRec(AliMUONRawCluster* theRawCluster)
	103	: TObject(),
	104	fBendingCoor(theRawCluster->GetY(0)),
	105	fNonBendingCoor(theRawCluster->GetX(0)),
	106	fZ(0.),
	107	fBendingReso2(0.),
	108	fNonBendingReso2(0.),
	109	fChamberNumber(0),
	110	fDetElemId(theRawCluster->GetDetElemId()),
	111	fHitNumber(0),
	112	fTTRTrack(-1),
	113	fTrackRefSignal(-1),
	114	fNTrackHits(0)
	115	{
	116	/// Constructor for AliMUONHitForRec from a raw cluster.
	117	/// Fills the bending and non bending coordinates.
	118
	119	// other fields will be updated in
	120	// AliMUONEventReconstructor::AddHitsForRecFromRawClusters,
	121	return;
	122	}
	123
	124	//__________________________________________________________________________
	125	AliMUONHitForRec::AliMUONHitForRec (const AliMUONHitForRec& theMUONHitForRec)
	126	: TObject(theMUONHitForRec),
	127	fBendingCoor(theMUONHitForRec.fBendingCoor),
	128	fNonBendingCoor(theMUONHitForRec.fNonBendingCoor),
	129	fZ(theMUONHitForRec.fZ),
	130	fBendingReso2(theMUONHitForRec.fBendingReso2),
	131	fNonBendingReso2(theMUONHitForRec.fNonBendingReso2),
	132	fChamberNumber(theMUONHitForRec.fChamberNumber),
	133	fDetElemId(theMUONHitForRec.fDetElemId),
	134	fHitNumber(theMUONHitForRec.fHitNumber),
	135	fTTRTrack(theMUONHitForRec.fTTRTrack),
	136	fTrackRefSignal(theMUONHitForRec.fTrackRefSignal),
	137	fNTrackHits(theMUONHitForRec.fNTrackHits)
	138	{
	139	/// Copy constructor
	140
	141	}
	142
	143	//__________________________________________________________________________
	144	AliMUONHitForRec::~AliMUONHitForRec()
	145	{
	146	/// Destructor
	147	}
	148
	149	//__________________________________________________________________________
	150	AliMUONHitForRec & AliMUONHitForRec::operator=(const AliMUONHitForRec& theMUONHitForRec)
	151	{
	152	/// Assignment operator
	153
	154	fBendingCoor = theMUONHitForRec.fBendingCoor;
	155	fNonBendingCoor = theMUONHitForRec.fNonBendingCoor;
	156	fZ = theMUONHitForRec.fZ;
	157	fBendingReso2 = theMUONHitForRec.fBendingReso2;
	158	fNonBendingReso2 = theMUONHitForRec.fNonBendingReso2;
	159	fChamberNumber = theMUONHitForRec.fChamberNumber;
	160	fDetElemId = theMUONHitForRec.fDetElemId;
	161	fHitNumber = theMUONHitForRec.fHitNumber;
	162	fTTRTrack = theMUONHitForRec.fTTRTrack;
	163	fTrackRefSignal = theMUONHitForRec.fTrackRefSignal;
	164	fNTrackHits = theMUONHitForRec.fNTrackHits;
	165	return *this;
	166	}
	167	//__________________________________________________________________________
	168	/*AZ
	169	Int_t AliMUONHitForRec::Compare(const TObject* Hit) const
	170	{
	171	// "Compare" function to sort with increasing chamber number.
	172	// Returns -1 (0, +1) if ChamberNumber of current HitForRec
	173	// is smaller than (equal to, larger than) ChamberNumber of Hit
	174	if (fChamberNumber < ((AliMUONHitForRec*)Hit)->fChamberNumber) return(-1);
	175	else if (fChamberNumber == ((AliMUONHitForRec*)Hit)->fChamberNumber) return( 0);
	176	else return(+1);
	177	}
	178	*/
	179	//__________________________________________________________________________
	180	Int_t AliMUONHitForRec::Compare(const TObject* Hit) const
	181	{
	182	/// "Compare" function to sort with decreasing Z-coordinate (spectro. MUON z<0).
	183	/// Returns 1 (0, -1) if Z-coordinate of current HitForRec
	184	/// is smaller than (equal to, larger than) Z-coordinate of Hit
	185
	186	if (fZ < ((AliMUONHitForRec*)Hit)->fZ) return(1);
	187	else if (fZ == ((AliMUONHitForRec*)Hit)->fZ) return( 0);
	188	else return(-1);
	189	}
	190
	191	//__________________________________________________________________________
	192	Double_t AliMUONHitForRec::NormalizedChi2WithHitForRec(AliMUONHitForRec* hitForRec, Double_t Sigma2Cut) const
	193	{
	194	/// Calculate the normalized Chi2 between the current hitForRec (this) and the hitForRec pointed to by "hitForRec",
	195	/// i.e. the square deviations between the coordinates, in both the bending and the non bending plane,
	196	/// divided by the variance of the same quantities and by "Sigma2Cut".
	197	/// Returns 3 if none of the 2 quantities is OK, something smaller than or equal to 2 otherwise.
	198	/// Would it be more correct to use a real chi square including the non diagonal term ????
	199
	200	Double_t chi2, chi2Max, diff, normDiff;
	201	chi2 = 0.0;
	202	chi2Max = 3.0;
	203	// coordinate in bending plane
	204	diff = fBendingCoor - hitForRec->fBendingCoor;
	205	normDiff = diff * diff / (fBendingReso2 + hitForRec->fBendingReso2) / Sigma2Cut;
	206	if (normDiff > 1.0) return chi2Max;
	207	chi2 = chi2 + normDiff;
	208	// coordinate in non bending plane
	209	diff = fNonBendingCoor - hitForRec->fNonBendingCoor;
	210	normDiff = diff * diff / (fNonBendingReso2 + hitForRec->fNonBendingReso2) / Sigma2Cut;
	211	if (normDiff > 1.0) return chi2Max;
	212	chi2 = chi2 + normDiff;
	213	return chi2;
	214	}
	215
	216	//______________________________________________________________________________
	217	void
	218	AliMUONHitForRec::Print(Option_t* /opt/) const
	219	{
	220	/// Printing
	221
	222	cout << "<AliMUONHitForRec> Coordinates (B,NB,Z) = ("
	223	<< setw(8) << setprecision(5) << fBendingCoor
	224	<< "," << setw(8) << setprecision(5) << fNonBendingCoor << ","
	225	<< setw(8) << setprecision(5) << fZ << ") "
	226	<< "Reso (B,NB)=(" << setw(8) << setprecision(5) << TMath::Sqrt(fBendingReso2)
	227	<< "," << setw(8) << setprecision(5) << TMath::Sqrt(fNonBendingReso2)
	228	<< ") "
	229	<< "Number " << setw(3) << fHitNumber
	230	<< " within chamber " << setw(3) <<fChamberNumber
	231	<< " DE " << setw(4) << fDetElemId
	232	<< endl;
	233	}