[u/mrichter/AliRoot.git] / STEER / AliTracker.h

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

/* $Id$ */

//-------------------------------------------------------------------------
//                          class AliTracker
//   that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker
//       Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch 
//-------------------------------------------------------------------------
#include <TObject.h>
#include "AliMagF.h"

class AliCluster;
class TTree;
class AliKalmanTrack;
class AliESD;
class AliTrackPoint;

class AliTracker : public TObject {
public:

  enum Propagation_t {kTrackInward, kTrackBack, kTrackRefit}; //type of propagation
  
  AliTracker();
  AliTracker(const AliTracker &atr);
  virtual ~AliTracker(){}
  virtual Int_t Clusters2Tracks(AliESD *event)=0;
  virtual Int_t PropagateBack(AliESD *event)=0;
  virtual Int_t RefitInward(AliESD *event)=0;
  void SetVertex(const Double_t *xyz, const Double_t *ers=0) { 
     fX=xyz[0]; fY=xyz[1]; fZ=xyz[2];
     if (ers) { fSigmaX=ers[0]; fSigmaY=ers[1]; fSigmaZ=ers[2]; } 
  }

//protected:
  virtual Int_t LoadClusters(TTree *)=0;
  virtual void UnloadClusters()=0;
  virtual AliCluster *GetCluster(Int_t index) const=0;
  virtual Bool_t GetTrackPoint(Int_t /* index */ , AliTrackPoint& /* p */) const { return kFALSE;}
  virtual void  UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
  virtual void  CookLabel(AliKalmanTrack *t,Float_t wrong) const; 
  Double_t GetX() const {return fX;}
  Double_t GetY() const {return fY;}
  Double_t GetZ() const {return fZ;}
  Double_t GetSigmaX() const {return fSigmaX;}
  Double_t GetSigmaY() const {return fSigmaY;}
  Double_t GetSigmaZ() const {return fSigmaZ;}

  static void SetFieldMap(const AliMagF* map, Bool_t uni);
  static const AliMagF *GetFieldMap() {return fgkFieldMap;}
  static Double_t GetBz(Float_t *r) {
    Float_t b[3]; fgkFieldMap->Field(r,b);
    Double_t bz=-Double_t(b[2]);
    return  (TMath::Sign(1e-13,bz) + bz);
  }
  static Double_t GetBz() {return fgBz;}
  static Bool_t UniformField() {return fgUniformField;}

private:

  AliTracker & operator=(const AliTracker & atr);

  static Bool_t fgUniformField;       // uniform field flag
  static const AliMagF *fgkFieldMap;  // field map
  static Double_t fgBz;               // Nominal Bz (kG)

  Double_t fX;  //X-coordinate of the primary vertex
  Double_t fY;  //Y-coordinate of the primary vertex
  Double_t fZ;  //Z-coordinate of the primary vertex

  Double_t fSigmaX; // error of the primary vertex position in X
  Double_t fSigmaY; // error of the primary vertex position in Y
  Double_t fSigmaZ; // error of the primary vertex position in Z

  ClassDef(AliTracker,3) //abstract tracker
};

#endif
Commit	Line	Data
	1	#ifndef ALITRACKER_H
	2	#define ALITRACKER_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	/* $Id$ */
	7
	8	//-------------------------------------------------------------------------
	9	// class AliTracker
	10	// that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker
	11	// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
	12	//-------------------------------------------------------------------------
	13	#include <TObject.h>
	14	#include "AliMagF.h"
	15
	16	class AliCluster;
	17	class TTree;
	18	class AliKalmanTrack;
	19	class AliESD;
	20	class AliTrackPoint;
	21
	22	class AliTracker : public TObject {
	23	public:
	24
	25	enum Propagation_t {kTrackInward, kTrackBack, kTrackRefit}; //type of propagation
	26
	27	AliTracker();
	28	AliTracker(const AliTracker &atr);
	29	virtual ~AliTracker(){}
	30	virtual Int_t Clusters2Tracks(AliESD *event)=0;
	31	virtual Int_t PropagateBack(AliESD *event)=0;
	32	virtual Int_t RefitInward(AliESD *event)=0;
	33	void SetVertex(const Double_t xyz, const Double_t ers=0) {
	34	fX=xyz[0]; fY=xyz[1]; fZ=xyz[2];
	35	if (ers) { fSigmaX=ers[0]; fSigmaY=ers[1]; fSigmaZ=ers[2]; }
	36	}
	37
	38	//protected:
	39	virtual Int_t LoadClusters(TTree *)=0;
	40	virtual void UnloadClusters()=0;
	41	virtual AliCluster *GetCluster(Int_t index) const=0;
	42	virtual Bool_t GetTrackPoint(Int_t /* index / , AliTrackPoint& / p */) const { return kFALSE;}
	43	virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
	44	virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
	45	Double_t GetX() const {return fX;}
	46	Double_t GetY() const {return fY;}
	47	Double_t GetZ() const {return fZ;}
	48	Double_t GetSigmaX() const {return fSigmaX;}
	49	Double_t GetSigmaY() const {return fSigmaY;}
	50	Double_t GetSigmaZ() const {return fSigmaZ;}
	51
	52	static void SetFieldMap(const AliMagF* map, Bool_t uni);
	53	static const AliMagF *GetFieldMap() {return fgkFieldMap;}
	54	static Double_t GetBz(Float_t *r) {
	55	Float_t b[3]; fgkFieldMap->Field(r,b);
	56	Double_t bz=-Double_t(b[2]);
	57	return (TMath::Sign(1e-13,bz) + bz);
	58	}
	59	static Double_t GetBz() {return fgBz;}
	60	static Bool_t UniformField() {return fgUniformField;}
	61
	62	private:
	63
	64	AliTracker & operator=(const AliTracker & atr);
	65
	66	static Bool_t fgUniformField; // uniform field flag
	67	static const AliMagF *fgkFieldMap; // field map
	68	static Double_t fgBz; // Nominal Bz (kG)
	69
	70	Double_t fX; //X-coordinate of the primary vertex
	71	Double_t fY; //Y-coordinate of the primary vertex
	72	Double_t fZ; //Z-coordinate of the primary vertex
	73
	74	Double_t fSigmaX; // error of the primary vertex position in X
	75	Double_t fSigmaY; // error of the primary vertex position in Y
	76	Double_t fSigmaZ; // error of the primary vertex position in Z
	77
	78	ClassDef(AliTracker,3) //abstract tracker
	79	};
	80
	81	#endif
	82
	83