[u/mrichter/AliRoot.git] / ITS / AliITStrackV2.h

#ifndef ALIITSTRACKV2_H
#define ALIITSTRACKV2_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

//-------------------------------------------------------------------------
//                       ITS Track Class
//
//        Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch 
//     dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
//-------------------------------------------------------------------------

#include <AliKalmanTrack.h>
#include "AliITSRecoParam.h"
#include "AliITSgeomTGeo.h"

/* $Id$ */

class AliESDtrack;

//_____________________________________________________________________________
class AliITStrackV2 : public AliKalmanTrack {
public:
  AliITStrackV2();
  AliITStrackV2(AliESDtrack& t,Bool_t c=kFALSE) throw (const Char_t *);
  AliITStrackV2(const AliITStrackV2& t);
  ~AliITStrackV2(){fESDtrack=0;}

  Bool_t CorrectForMeanMaterial(Double_t xOverX0, Double_t xTimesRho,
				Bool_t anglecorr=kFALSE) {
    return AliExternalTrackParam::CorrectForMeanMaterial(xOverX0,xTimesRho,GetMass(),anglecorr);
  }
  Bool_t CorrectForMaterial(Double_t d, Double_t x0=AliITSRecoParam::GetX0Air()) {
    // deprecated: use CorrectForMeanMaterial instead
    return AliExternalTrackParam::CorrectForMaterial(d,x0,GetMass());
  }
  Bool_t PropagateTo(Double_t xr, Double_t d, Double_t x0=AliITSRecoParam::GetX0Air());
  Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep, Double_t &xOverX0, Double_t &xTimesRho);
  Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep=1) {
    Double_t dummy1,dummy2; return PropagateToTGeo(xToGo,nstep,dummy1,dummy2);
  }
  Double_t GetPredictedChi2(const AliCluster *cluster) const;
  Bool_t Update(const AliCluster *cl, Double_t chi2, Int_t i);

  Bool_t PropagateToVertex(const AliESDVertex *v,Double_t d=0.,Double_t x0=0.);
  Bool_t Propagate(Double_t alpha, Double_t xr);
  Bool_t MeanBudgetToPrimVertex(Double_t xyz[3], Double_t step, Double_t &d) const;
  Bool_t Improve(Double_t x0,Double_t xyz[3],Double_t ers[3]);

  void SetdEdx(Double_t dedx) {fdEdx=dedx;}
  void SetSampledEdx(Float_t q, Int_t i);
  Float_t GetSampledEdx(Int_t i) const {return fdEdxSample[i];}
  void CookdEdx(Double_t low=0., Double_t up=0.51);
  void SetDetectorIndex(Int_t i) {SetLabel(i);}
  void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
  void UpdateESDtrack(ULong_t flags) const;
  
  AliESDtrack *GetESDtrack() const {return fESDtrack;}

  Int_t GetDetectorIndex() const {return GetLabel();}
  Double_t GetdEdx() const {return fdEdx;}
  Double_t GetPIDsignal() const {return GetdEdx();}
  Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
  Double_t GetD(Double_t x, Double_t y) const {
    return AliExternalTrackParam::GetD(x,y,GetBz());
  }
  void GetDZ(Double_t xv, Double_t yv, Double_t zv, Float_t dz[2]) const {
    return AliExternalTrackParam::GetDZ(xv,yv,zv,GetBz(),dz);
  }

  Bool_t GetGlobalXYZat(Double_t xloc,Double_t &x,Double_t &y,Double_t &z) const;
  Bool_t GetPhiZat(Double_t r,Double_t &phi,Double_t &z) const;
  Bool_t GetLocalXat(Double_t r,Double_t &xloc) const;

  Int_t Compare(const TObject *o) const;
  Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
  void  SetModuleIndex(Int_t ilayer,Int_t idx) {fModule[ilayer]=idx;}
  Int_t GetModuleIndex(Int_t ilayer) const {return fModule[ilayer];}
  void  SetModuleIndexInfo(Int_t ilayer,Int_t idet,Int_t status=1,Float_t xloc=0,Float_t zloc=0);
  Bool_t GetModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,Float_t &xloc,Float_t &zloc) const;
  Bool_t Invariant() const;

  void  SetExtraCluster(Int_t ilayer, Int_t idx) {fIndex[AliITSgeomTGeo::kNLayers+ilayer]=idx;}
  Int_t GetExtraCluster(Int_t ilayer) const {return fIndex[AliITSgeomTGeo::kNLayers+ilayer];}

  void  SetExtraModule(Int_t ilayer, Int_t idx) {fModule[AliITSgeomTGeo::kNLayers+ilayer]=idx;}
  Int_t GetExtraModule(Int_t ilayer) const {return fModule[AliITSgeomTGeo::kNLayers+ilayer];}

protected:
  Double_t GetBz() const ;
  Double_t fdEdx;            // dE/dx

  static const Int_t fgkWARN; //! used for debugging purposes
  Float_t fdEdxSample[4];    // array of dE/dx samples b.b.

  Int_t fIndex[2*AliITSgeomTGeo::kNLayers]; // indices of associated clusters 

  Int_t fModule[2*AliITSgeomTGeo::kNLayers]; // indices of crossed modules: 
                                             // see SetModuleIndexInfo()
  AliESDtrack *fESDtrack;    //! pointer to the connected ESD track

private:
  AliITStrackV2 &operator=(const AliITStrackV2 &tr);
  ClassDef(AliITStrackV2,7)  //ITS reconstructed track
};

inline void AliITStrackV2::SetSampledEdx(Float_t q, Int_t i) {
  //----------------------------------------------------------------------
  // This function stores dEdx sample corrected for the track segment length 
  // Origin: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
  //----------------------------------------------------------------------
  if (i<0) return;
  if (i>3) return;
  Double_t s=GetSnp(), t=GetTgl();
  q *= TMath::Sqrt((1-s*s)/(1+t*t));
  fdEdxSample[i]=q;
  return;
}

inline void  AliITStrackV2::SetModuleIndexInfo(Int_t ilayer,Int_t idet,Int_t status,
					       Float_t xloc,Float_t zloc) {
  //----------------------------------------------------------------------
  // This function encodes in the module number also the status of cluster association
  // "status" can have the following values: 
  // 1 "found" (cluster is associated), 
  // 2 "dead" (module is dead from OCDB), 
  // 3 "skipped" (module or layer forced to be skipped),
  // 4 "outinz" (track out of z acceptance), 
  // 5 "nocls" (no clusters in the road), 
  // 6 "norefit" (cluster rejected during refit) 
  // 7 "deadzspd" (holes in z in SPD)
  // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliESDtrack::GetITSModuleIndexInfo()!
  //----------------------------------------------------------------------

  if(idet<0) {
    idet=0;
  } else {
    // same detector numbering as in AliITSCalib classes
    if(ilayer==1) idet+=AliITSgeomTGeo::GetNLadders(1)*AliITSgeomTGeo::GetNDetectors(1);
    if(ilayer==3) idet+=AliITSgeomTGeo::GetNLadders(3)*AliITSgeomTGeo::GetNDetectors(3);
    if(ilayer==5) idet+=AliITSgeomTGeo::GetNLadders(5)*AliITSgeomTGeo::GetNDetectors(5);
  }

  Int_t xInt = Int_t(xloc*10.);
  Int_t zInt = Int_t(zloc*10.);

  if(TMath::Abs(xloc*10.-(Float_t)xInt)>0.5)
    if(zloc>0) { xInt++; } else { xInt--; }
  if(TMath::Abs(zloc*10.-(Float_t)zInt)>0.5)
    if(zloc>0) { zInt++; } else { zInt--; }

  Int_t signs=0;
  if(xInt>=0 && zInt>=0) signs=10000;
  if(xInt>=0 && zInt<0)  signs=20000;
  if(xInt<0 && zInt>=0)  signs=30000;
  if(xInt<0 && zInt<0)   signs=40000;

  Int_t modindex = signs;
  
  modindex += TMath::Abs(zInt);
  modindex += TMath::Abs(xInt)*100;

  modindex += status*100000;

  modindex += idet*1000000;

  SetModuleIndex(ilayer,modindex);
  return;
}

inline Bool_t AliITStrackV2::GetModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,
					       Float_t &xloc,Float_t &zloc) const {
  //----------------------------------------------------------------------
  // This function encodes in the module number also the status of cluster association
  // "status" can have the following values: 
  // 1 "found" (cluster is associated), 
  // 2 "dead" (module is dead from OCDB), 
  // 3 "skipped" (module or layer forced to be skipped),
  // 4 "outinz" (track out of z acceptance), 
  // 5 "nocls" (no clusters in the road), 
  // 6 "norefit" (cluster rejected during refit), 
  // 7 "deadzspd" (holes in z in SPD)
  // Also given are the coordinates of the crossing point of track and module
  // (in the local module ref. system)
  // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliESDtrack::GetITSModuleIndexInfo()!
  //----------------------------------------------------------------------


  if(fModule[ilayer]==-1) {
    AliError("fModule was not set !");
    idet = -1;
    status=0;
    xloc=-99.; zloc=-99.;
    return kFALSE;
  }

  Int_t module = fModule[ilayer];

  idet = Int_t(module/1000000);

  module -= idet*1000000;

  status = Int_t(module/100000);

  module -= status*100000;

  Int_t signs = Int_t(module/10000);

  module-=signs*10000;

  Int_t xInt = Int_t(module/100);
  module -= xInt*100;

  Int_t zInt = module;

  if(signs==1) { xInt*=1; zInt*=1; }
  if(signs==2) { xInt*=1; zInt*=-1; }
  if(signs==3) { xInt*=-1; zInt*=1; }
  if(signs==4) { xInt*=-1; zInt*=-1; }

  xloc = 0.1*(Float_t)xInt;
  zloc = 0.1*(Float_t)zInt;

  if(status==4) idet = -1;

  return kTRUE;
}


#endif
Commit	Line	Data
006b5f7f	1	#ifndef ALIITSTRACKV2_H
	2	#define ALIITSTRACKV2_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	//-------------------------------------------------------------------------
	7	// ITS Track Class
	8	//
	9	// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
a9a2d814	10	// dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
006b5f7f	11	//-------------------------------------------------------------------------
006b5f7f	12
006b5f7f	13	#include <AliKalmanTrack.h>
44347160	14	#include "AliITSRecoParam.h"
e50912db	15	#include "AliITSgeomTGeo.h"
006b5f7f	16
ae00569a	17	/* $Id$ */
ae00569a	18
83d73500	19	class AliESDtrack;
006b5f7f	20
006b5f7f	21	//_____________________________________________________________________________
8676d691	22	class AliITStrackV2 : public AliKalmanTrack {
006b5f7f	23	public:
22b13da0	24	AliITStrackV2();
67c3dcbe	25	AliITStrackV2(AliESDtrack& t,Bool_t c=kFALSE) throw (const Char_t *);
006b5f7f	26	AliITStrackV2(const AliITStrackV2& t);
43d2197f	27	~AliITStrackV2(){fESDtrack=0;}
6c94f330	28
e50912db	29	Bool_t CorrectForMeanMaterial(Double_t xOverX0, Double_t xTimesRho,
	30	Bool_t anglecorr=kFALSE) {
	31	return AliExternalTrackParam::CorrectForMeanMaterial(xOverX0,xTimesRho,GetMass(),anglecorr);
	32	}
	33	Bool_t CorrectForMaterial(Double_t d, Double_t x0=AliITSRecoParam::GetX0Air()) {
	34	// deprecated: use CorrectForMeanMaterial instead
6c94f330	35	return AliExternalTrackParam::CorrectForMaterial(d,x0,GetMass());
6c94f330	36	}
e50912db	37	Bool_t PropagateTo(Double_t xr, Double_t d, Double_t x0=AliITSRecoParam::GetX0Air());
	38	Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep, Double_t &xOverX0, Double_t &xTimesRho);
	39	Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep=1) {
	40	Double_t dummy1,dummy2; return PropagateToTGeo(xToGo,nstep,dummy1,dummy2);
afd25725	41	}
6c94f330	42	Double_t GetPredictedChi2(const AliCluster *cluster) const;
	43	Bool_t Update(const AliCluster *cl, Double_t chi2, Int_t i);
	44
e50912db	45	Bool_t PropagateToVertex(const AliESDVertex *v,Double_t d=0.,Double_t x0=0.);
6c94f330	46	Bool_t Propagate(Double_t alpha, Double_t xr);
afd25725	47	Bool_t MeanBudgetToPrimVertex(Double_t xyz[3], Double_t step, Double_t &d) const;
6c94f330	48	Bool_t Improve(Double_t x0,Double_t xyz[3],Double_t ers[3]);
6c94f330	49
7f6ddf58	50	void SetdEdx(Double_t dedx) {fdEdx=dedx;}
a9a2d814	51	void SetSampledEdx(Float_t q, Int_t i);
b9671574	52	Float_t GetSampledEdx(Int_t i) const {return fdEdxSample[i];}
a9a2d814	53	void CookdEdx(Double_t low=0., Double_t up=0.51);
006b5f7f	54	void SetDetectorIndex(Int_t i) {SetLabel(i);}
7f6ddf58	55	void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
15dd636f	56	void UpdateESDtrack(ULong_t flags) const;
e43c066c	57
1aedd96e	58	AliESDtrack *GetESDtrack() const {return fESDtrack;}
e43c066c	59
006b5f7f	60	Int_t GetDetectorIndex() const {return GetLabel();}
7f6ddf58	61	Double_t GetdEdx() const {return fdEdx;}
83d73500	62	Double_t GetPIDsignal() const {return GetdEdx();}
6c94f330	63	Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
	64	Double_t GetD(Double_t x, Double_t y) const {
	65	return AliExternalTrackParam::GetD(x,y,GetBz());
	66	}
	67	void GetDZ(Double_t xv, Double_t yv, Double_t zv, Float_t dz[2]) const {
	68	return AliExternalTrackParam::GetDZ(xv,yv,zv,GetBz(),dz);
	69	}
	70
e50912db	71	Bool_t GetGlobalXYZat(Double_t xloc,Double_t &x,Double_t &y,Double_t &z) const;
8602c008	72	Bool_t GetPhiZat(Double_t r,Double_t &phi,Double_t &z) const;
e50912db	73	Bool_t GetLocalXat(Double_t r,Double_t &xloc) const;
6c94f330	74
006b5f7f	75	Int_t Compare(const TObject *o) const;
006b5f7f	76	Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
ae00569a	77	void SetModuleIndex(Int_t ilayer,Int_t idx) {fModule[ilayer]=idx;}
	78	Int_t GetModuleIndex(Int_t ilayer) const {return fModule[ilayer];}
	79	void SetModuleIndexInfo(Int_t ilayer,Int_t idet,Int_t status=1,Float_t xloc=0,Float_t zloc=0);
	80	Bool_t GetModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,Float_t &xloc,Float_t &zloc) const;
6c94f330	81	Bool_t Invariant() const;
ef7253ac	82
ae00569a	83	void SetExtraCluster(Int_t ilayer, Int_t idx) {fIndex[AliITSgeomTGeo::kNLayers+ilayer]=idx;}
	84	Int_t GetExtraCluster(Int_t ilayer) const {return fIndex[AliITSgeomTGeo::kNLayers+ilayer];}
	85
	86	void SetExtraModule(Int_t ilayer, Int_t idx) {fModule[AliITSgeomTGeo::kNLayers+ilayer]=idx;}
	87	Int_t GetExtraModule(Int_t ilayer) const {return fModule[AliITSgeomTGeo::kNLayers+ilayer];}
c84a5e9e	88
6c94f330	89	protected:
	90	Double_t GetBz() const ;
	91	Double_t fdEdx; // dE/dx
8602c008	92
8602c008	93	static const Int_t fgkWARN; //! used for debugging purposes
6c94f330	94	Float_t fdEdxSample[4]; // array of dE/dx samples b.b.
15dd636f	95
e50912db	96	Int_t fIndex[2*AliITSgeomTGeo::kNLayers]; // indices of associated clusters
15dd636f	97
ae00569a	98	Int_t fModule[2*AliITSgeomTGeo::kNLayers]; // indices of crossed modules:
ae00569a	99	// see SetModuleIndexInfo()
ef7253ac	100	AliESDtrack *fESDtrack; //! pointer to the connected ESD track
006b5f7f	101
6c94f330	102	private:
6c94f330	103	AliITStrackV2 &operator=(const AliITStrackV2 &tr);
8602c008	104	ClassDef(AliITStrackV2,7) //ITS reconstructed track
6c94f330	105	};
a9a2d814	106
ae00569a	107	inline void AliITStrackV2::SetSampledEdx(Float_t q, Int_t i) {
23efe5f1	108	//----------------------------------------------------------------------
a9a2d814	109	// This function stores dEdx sample corrected for the track segment length
a9a2d814	110	// Origin: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
23efe5f1	111	//----------------------------------------------------------------------
a9a2d814	112	if (i<0) return;
a9a2d814	113	if (i>3) return;
23efe5f1	114	Double_t s=GetSnp(), t=GetTgl();
23efe5f1	115	q = TMath::Sqrt((1-ss)/(1+t*t));
23efe5f1	116	fdEdxSample[i]=q;
ae00569a	117	return;
23efe5f1	118	}
c84a5e9e	119
ae00569a	120	inline void AliITStrackV2::SetModuleIndexInfo(Int_t ilayer,Int_t idet,Int_t status,
	121	Float_t xloc,Float_t zloc) {
	122	//----------------------------------------------------------------------
	123	// This function encodes in the module number also the status of cluster association
	124	// "status" can have the following values:
	125	// 1 "found" (cluster is associated),
	126	// 2 "dead" (module is dead from OCDB),
	127	// 3 "skipped" (module or layer forced to be skipped),
	128	// 4 "outinz" (track out of z acceptance),
	129	// 5 "nocls" (no clusters in the road),
	130	// 6 "norefit" (cluster rejected during refit)
	131	// 7 "deadzspd" (holes in z in SPD)
	132	// WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliESDtrack::GetITSModuleIndexInfo()!
	133	//----------------------------------------------------------------------
	134
	135	if(idet<0) {
	136	idet=0;
	137	} else {
	138	// same detector numbering as in AliITSCalib classes
	139	if(ilayer==1) idet+=AliITSgeomTGeo::GetNLadders(1)*AliITSgeomTGeo::GetNDetectors(1);
	140	if(ilayer==3) idet+=AliITSgeomTGeo::GetNLadders(3)*AliITSgeomTGeo::GetNDetectors(3);
	141	if(ilayer==5) idet+=AliITSgeomTGeo::GetNLadders(5)*AliITSgeomTGeo::GetNDetectors(5);
	142	}
	143
	144	Int_t xInt = Int_t(xloc*10.);
	145	Int_t zInt = Int_t(zloc*10.);
	146
	147	if(TMath::Abs(xloc*10.-(Float_t)xInt)>0.5)
	148	if(zloc>0) { xInt++; } else { xInt--; }
	149	if(TMath::Abs(zloc*10.-(Float_t)zInt)>0.5)
	150	if(zloc>0) { zInt++; } else { zInt--; }
	151
	152	Int_t signs=0;
	153	if(xInt>=0 && zInt>=0) signs=10000;
	154	if(xInt>=0 && zInt<0) signs=20000;
	155	if(xInt<0 && zInt>=0) signs=30000;
	156	if(xInt<0 && zInt<0) signs=40000;
	157
	158	Int_t modindex = signs;
	159
	160	modindex += TMath::Abs(zInt);
	161	modindex += TMath::Abs(xInt)*100;
	162
	163	modindex += status*100000;
	164
	165	modindex += idet*1000000;
	166
	167	SetModuleIndex(ilayer,modindex);
	168	return;
	169	}
	170
	171	inline Bool_t AliITStrackV2::GetModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,
	172	Float_t &xloc,Float_t &zloc) const {
	173	//----------------------------------------------------------------------
	174	// This function encodes in the module number also the status of cluster association
	175	// "status" can have the following values:
	176	// 1 "found" (cluster is associated),
	177	// 2 "dead" (module is dead from OCDB),
	178	// 3 "skipped" (module or layer forced to be skipped),
	179	// 4 "outinz" (track out of z acceptance),
	180	// 5 "nocls" (no clusters in the road),
	181	// 6 "norefit" (cluster rejected during refit),
	182	// 7 "deadzspd" (holes in z in SPD)
	183	// Also given are the coordinates of the crossing point of track and module
184	// (in the local module ref. system)
185	// WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliESDtrack::GetITSModuleIndexInfo()!
186	//----------------------------------------------------------------------
187
188
189	if(fModule[ilayer]==-1) {
190	AliError("fModule was not set !");
191	idet = -1;
192	status=0;
193	xloc=-99.; zloc=-99.;
194	return kFALSE;
195	}
196
197	Int_t module = fModule[ilayer];
198
199	idet = Int_t(module/1000000);
200
201	module -= idet*1000000;
202
203	status = Int_t(module/100000);
204
205	module -= status*100000;
206
207	Int_t signs = Int_t(module/10000);
208
209	module-=signs*10000;
210
211	Int_t xInt = Int_t(module/100);
212	module -= xInt*100;
213
214	Int_t zInt = module;
215
216	if(signs==1) { xInt=1; zInt=1; }
217	if(signs==2) { xInt=1; zInt=-1; }
218	if(signs==3) { xInt=-1; zInt=1; }
219	if(signs==4) { xInt=-1; zInt=-1; }
220
221	xloc = 0.1*(Float_t)xInt;
222	zloc = 0.1*(Float_t)zInt;
223
224	if(status==4) idet = -1;
225
226	return kTRUE;
227	}
228
229
006b5f7f	230	#endif
	231
	232