[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"

ClassImp(AliMUONHitForRec) // Class implementation in ROOT context

  //__________________________________________________________________________
AliMUONHitForRec::AliMUONHitForRec()
  : TObject(),
    fBendingCoor(0.),
    fNonBendingCoor(0.),
    fZ(0.),
    fBendingReso2(0.),
    fNonBendingReso2(0.),
    fChamberNumber(0),
    fDetElemId(0),
    fHitNumber(0),
    fTTRTrack(0),
    fTrackRefSignal(0),
    fIndexOfFirstSegment(0),
    fNSegments(0),
    fFirstTrackHitPtr(0x0),
    fLastTrackHitPtr(0x0),
    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),
    fIndexOfFirstSegment(-1),
    fNSegments(0),
    fFirstTrackHitPtr(0x0),
    fLastTrackHitPtr(0x0),
    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),
    fIndexOfFirstSegment(-1),
    fNSegments(0),
    fFirstTrackHitPtr(0x0),
    fLastTrackHitPtr(0x0),
    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),
    fIndexOfFirstSegment(theMUONHitForRec.fIndexOfFirstSegment),
    fNSegments(theMUONHitForRec.fNSegments),
    fFirstTrackHitPtr(theMUONHitForRec.fFirstTrackHitPtr),
    fLastTrackHitPtr(theMUONHitForRec.fLastTrackHitPtr),
    fNTrackHits(theMUONHitForRec.fNTrackHits)
{
/// Copy constructor

}

  //__________________________________________________________________________
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;
  fIndexOfFirstSegment = theMUONHitForRec.fIndexOfFirstSegment;
  fNSegments = theMUONHitForRec.fNSegments;
  fFirstTrackHitPtr = theMUONHitForRec.fFirstTrackHitPtr;
  fLastTrackHitPtr = theMUONHitForRec.fLastTrackHitPtr;
  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
a9e2aefa	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
88cb7938	16	/* $Id$ */
a9e2aefa	17
d19b6003	18	// ------------------------
	19	// Class AliMUONHitForRec
	20	// ------------------------
a9e2aefa	21	// Hit for reconstruction in ALICE dimuon spectrometer
d19b6003	22	// Author: J. Gosset
a9e2aefa	23
29fc2c86	24	#include "AliTrackReference.h"
a9e2aefa	25	#include "AliMUONHitForRec.h"
a9e2aefa	26	#include "AliMUONRawCluster.h"
a9e2aefa	27	#include "AliMUONHit.h"
29fc2c86	28	#include "AliMUONConstants.h"
8c343c7c	29	#include "AliLog.h"
c8245e7e	30	#include "Riostream.h"
a9e2aefa	31
	32	ClassImp(AliMUONHitForRec) // Class implementation in ROOT context
	33
	34	//__________________________________________________________________________
30178c30	35	AliMUONHitForRec::AliMUONHitForRec()
54d7ba50	36	: TObject(),
	37	fBendingCoor(0.),
	38	fNonBendingCoor(0.),
	39	fZ(0.),
	40	fBendingReso2(0.),
	41	fNonBendingReso2(0.),
	42	fChamberNumber(0),
	43	fDetElemId(0),
	44	fHitNumber(0),
	45	fTTRTrack(0),
	46	fTrackRefSignal(0),
	47	fIndexOfFirstSegment(0),
	48	fNSegments(0),
	49	fFirstTrackHitPtr(0x0),
	50	fLastTrackHitPtr(0x0),
	51	fNTrackHits(0)
30178c30	52	{
d19b6003	53	/// Default Constructor
30178c30	54
30178c30	55	}
	56
	57	//__________________________________________________________________________
29fc2c86	58	AliMUONHitForRec::AliMUONHitForRec(AliTrackReference* theGhit)
54d7ba50	59	: TObject(),
	60	fBendingCoor(theGhit->Y()),
	61	fNonBendingCoor(theGhit->X()),
	62	fZ(theGhit->Z()),
	63	fBendingReso2(0.),
	64	fNonBendingReso2(0.),
	65	fChamberNumber(0),
	66	fDetElemId(0),
	67	fHitNumber(0),
	68	fTTRTrack(0),
	69	fTrackRefSignal(0),
	70	fIndexOfFirstSegment(-1),
	71	fNSegments(0),
	72	fFirstTrackHitPtr(0x0),
	73	fLastTrackHitPtr(0x0),
	74	fNTrackHits(0)
a9e2aefa	75	{
d19b6003	76	/// Constructor for AliMUONHitForRec from a track ref. hit.
	77	/// Fills the bending, non bending, and Z coordinates,
	78	/// which are taken from the coordinates of the track ref. hit,
	79	/// the track number (track ref. and not TH),
	80	/// and the chamber number (0...).
	81
30178c30	82	// fTrack = theGhit->fTrack; ?????????
30d3ea8a	83	fDetElemId = theGhit->UserId();
	84	if (fDetElemId) fChamberNumber = fDetElemId / 100 - 1;
	85	else fChamberNumber = AliMUONConstants::ChamberNumber(fZ);
a9e2aefa	86	// other fields will be updated in
54d7ba50	87	// AliMUONEventReconstructor::NewHitForRecFromTrackRef
a9e2aefa	88	return;
	89	}
	90
	91	// //__________________________________________________________________________
	92	// AliMUONHitForRec::AliMUONHitForRec(AliMUONReconstHit* CathCorrel)
	93	// {
	94	// // Constructor for AliMUONHitForRec from a (cathode correlated) raw cluster.
	95	// // Fills the bending and non bending coordinates.
	96	// // Only the first correlation is taken into account.
	97	// // The bending coordinate is taken from the first cathode.
	98	// // The non bending coordinate is taken
	99	// // from the second cathode if it exists,
	100	// // from the first one otherwise.
	101	// fBendingCoor = CathCorrel->fY[3];
	102	// if (CathCorrel->fCorrelIndex[0] >= 0) fNonBendingCoor = CathCorrel->fX[0];
	103	// else fNonBendingCoor = CathCorrel->fX[3];
	104	// return;
	105	// }
	106
	107	//__________________________________________________________________________
30178c30	108	AliMUONHitForRec::AliMUONHitForRec(AliMUONRawCluster* theRawCluster)
54d7ba50	109	: TObject(),
	110	fBendingCoor(theRawCluster->GetY(0)),
	111	fNonBendingCoor(theRawCluster->GetX(0)),
	112	fZ(0.),
	113	fBendingReso2(0.),
	114	fNonBendingReso2(0.),
	115	fChamberNumber(0),
	116	fDetElemId(theRawCluster->GetDetElemId()),
	117	fHitNumber(0),
	118	fTTRTrack(-1),
	119	fTrackRefSignal(-1),
	120	fIndexOfFirstSegment(-1),
	121	fNSegments(0),
	122	fFirstTrackHitPtr(0x0),
	123	fLastTrackHitPtr(0x0),
	124	fNTrackHits(0)
a9e2aefa	125	{
d19b6003	126	/// Constructor for AliMUONHitForRec from a raw cluster.
	127	/// Fills the bending and non bending coordinates.
	128
a9e2aefa	129	// other fields will be updated in
a9e2aefa	130	// AliMUONEventReconstructor::AddHitsForRecFromRawClusters,
a9e2aefa	131	return;
	132	}
	133
30178c30	134	//__________________________________________________________________________
b8dc484b	135	AliMUONHitForRec::AliMUONHitForRec (const AliMUONHitForRec& theMUONHitForRec)
54d7ba50	136	: TObject(theMUONHitForRec),
	137	fBendingCoor(theMUONHitForRec.fBendingCoor),
	138	fNonBendingCoor(theMUONHitForRec.fNonBendingCoor),
	139	fZ(theMUONHitForRec.fZ),
	140	fBendingReso2(theMUONHitForRec.fBendingReso2),
	141	fNonBendingReso2(theMUONHitForRec.fNonBendingReso2),
	142	fChamberNumber(theMUONHitForRec.fChamberNumber),
	143	fDetElemId(theMUONHitForRec.fDetElemId),
	144	fHitNumber(theMUONHitForRec.fHitNumber),
	145	fTTRTrack(theMUONHitForRec.fTTRTrack),
	146	fTrackRefSignal(theMUONHitForRec.fTrackRefSignal),
	147	fIndexOfFirstSegment(theMUONHitForRec.fIndexOfFirstSegment),
	148	fNSegments(theMUONHitForRec.fNSegments),
	149	fFirstTrackHitPtr(theMUONHitForRec.fFirstTrackHitPtr),
	150	fLastTrackHitPtr(theMUONHitForRec.fLastTrackHitPtr),
	151	fNTrackHits(theMUONHitForRec.fNTrackHits)
a9e2aefa	152	{
d19b6003	153	/// Copy constructor
d19b6003	154
a9e2aefa	155	}
a9e2aefa	156
30178c30	157	//__________________________________________________________________________
b8dc484b	158	AliMUONHitForRec & AliMUONHitForRec::operator=(const AliMUONHitForRec& theMUONHitForRec)
a9e2aefa	159	{
d19b6003	160	/// Assignment operator
d19b6003	161
b8dc484b	162	fBendingCoor = theMUONHitForRec.fBendingCoor;
	163	fNonBendingCoor = theMUONHitForRec.fNonBendingCoor;
	164	fZ = theMUONHitForRec.fZ;
	165	fBendingReso2 = theMUONHitForRec.fBendingReso2;
	166	fNonBendingReso2 = theMUONHitForRec.fNonBendingReso2;
	167	fChamberNumber = theMUONHitForRec.fChamberNumber;
38804330	168	fDetElemId = theMUONHitForRec.fDetElemId;
b8dc484b	169	fHitNumber = theMUONHitForRec.fHitNumber;
29fc2c86	170	fTTRTrack = theMUONHitForRec.fTTRTrack;
29fc2c86	171	fTrackRefSignal = theMUONHitForRec.fTrackRefSignal;
b8dc484b	172	fIndexOfFirstSegment = theMUONHitForRec.fIndexOfFirstSegment;
	173	fNSegments = theMUONHitForRec.fNSegments;
	174	fFirstTrackHitPtr = theMUONHitForRec.fFirstTrackHitPtr;
	175	fLastTrackHitPtr = theMUONHitForRec.fLastTrackHitPtr;
	176	fNTrackHits = theMUONHitForRec.fNTrackHits;
b8dc484b	177	return *this;
a9e2aefa	178	}
a9e2aefa	179	//__________________________________________________________________________
83dbc640	180	/*AZ
2a941f4e	181	Int_t AliMUONHitForRec::Compare(const TObject* Hit) const
a9e2aefa	182	{
	183	// "Compare" function to sort with increasing chamber number.
	184	// Returns -1 (0, +1) if ChamberNumber of current HitForRec
	185	// is smaller than (equal to, larger than) ChamberNumber of Hit
	186	if (fChamberNumber < ((AliMUONHitForRec*)Hit)->fChamberNumber) return(-1);
	187	else if (fChamberNumber == ((AliMUONHitForRec*)Hit)->fChamberNumber) return( 0);
	188	else return(+1);
	189	}
83dbc640	190	*/
	191	//__________________________________________________________________________
	192	Int_t AliMUONHitForRec::Compare(const TObject* Hit) const
	193	{
d19b6003	194	/// "Compare" function to sort with decreasing Z-coordinate (spectro. MUON z<0).
	195	/// Returns 1 (0, -1) if Z-coordinate of current HitForRec
	196	/// is smaller than (equal to, larger than) Z-coordinate of Hit
	197
5b64e914	198	if (fZ < ((AliMUONHitForRec*)Hit)->fZ) return(1);
83dbc640	199	else if (fZ == ((AliMUONHitForRec*)Hit)->fZ) return( 0);
5b64e914	200	else return(-1);
83dbc640	201	}
a9e2aefa	202
a9e2aefa	203	//__________________________________________________________________________
30178c30	204	Double_t AliMUONHitForRec::NormalizedChi2WithHitForRec(AliMUONHitForRec* hitForRec, Double_t Sigma2Cut) const
a9e2aefa	205	{
d19b6003	206	/// Calculate the normalized Chi2 between the current hitForRec (this)
	207	/// and the hitForRec pointed to by "hitForRec",
	208	/// i.e. the square deviations between the coordinates,
	209	/// in both the bending and the non bending plane,
	210	/// divided by the variance of the same quantities and by "Sigma2Cut".
	211	/// Returns 3 if none of the 2 quantities is OK,
	212	/// something smaller than or equal to 2 otherwise.
	213	/// Would it be more correct to use a real chi square
	214	/// including the non diagonal term ????
	215
a9e2aefa	216	Double_t chi2, chi2Max, diff, normDiff;
	217	chi2 = 0.0;
	218	chi2Max = 3.0;
	219	// coordinate in bending plane
30178c30	220	diff = fBendingCoor - hitForRec->fBendingCoor;
a9e2aefa	221	normDiff = diff * diff /
30178c30	222	(fBendingReso2 + hitForRec->fBendingReso2) / Sigma2Cut;
a9e2aefa	223	if (normDiff > 1.0) return chi2Max;
	224	chi2 = chi2 + normDiff;
	225	// coordinate in non bending plane
30178c30	226	diff = fNonBendingCoor - hitForRec->fNonBendingCoor;
a9e2aefa	227	normDiff = diff * diff /
30178c30	228	(fNonBendingReso2 + hitForRec->fNonBendingReso2) / Sigma2Cut;
a9e2aefa	229	if (normDiff > 1.0) return chi2Max;
	230	chi2 = chi2 + normDiff;
	231	return chi2;
	232	}
c8245e7e	233
	234	//______________________________________________________________________________
	235	void
	236	AliMUONHitForRec::Print(Option_t* /opt/) const
	237	{
9c4d2d12	238	/// Printing
9c4d2d12	239
c8245e7e	240	cout << "<AliMUONHitForRec> Coordinates (B,NB,Z) = ("
	241	<< setw(8) << setprecision(5) << fBendingCoor
	242	<< "," << setw(8) << setprecision(5) << fNonBendingCoor << ","
	243	<< setw(8) << setprecision(5) << fZ << ") "
	244	<< "Reso (B,NB)=(" << setw(8) << setprecision(5) << TMath::Sqrt(fBendingReso2)
	245	<< "," << setw(8) << setprecision(5) << TMath::Sqrt(fNonBendingReso2)
	246	<< ") "
	247	<< "Number " << setw(3) << fHitNumber
	248	<< " within chamber " << setw(3) <<fChamberNumber
	249	<< " DE " << setw(4) << fDetElemId
	250	<< endl;
	251	}