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

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

/* $Id$ */


#include "AliTrackParam.h"
class AliKalmanTrack;

class AliExternalTrackParam: public AliTrackParam {
 public:
  AliExternalTrackParam();
  AliExternalTrackParam(Double_t x, Double_t alpha, 
			const Double_t param[5], const Double_t covar[15]);
  AliExternalTrackParam(const AliKalmanTrack& track);

  virtual const Double_t* GetParameter() const;
  virtual const Double_t* GetCovariance() const;
  virtual Double_t     X() const {return fX;};
  virtual Double_t     Alpha() const {return fAlpha;};
  virtual AliExternalTrackParam* CreateExternalParam() const;
  virtual void         ResetCovariance(Double_t factor = 10.,
				       Bool_t clearOffDiagonal = kTRUE);
  virtual Double_t     Y() const {return fParam[0];};
  virtual Double_t     Z() const {return fParam[1];};

  virtual Bool_t       PropagateTo(Double_t x, Double_t* length = NULL);
  virtual Bool_t       RotateTo(Double_t alpha);
  virtual Bool_t       CorrectForMaterial(Double_t dAngle2, Double_t dPrel);
  virtual Bool_t       GetProlongationAt(Double_t x, Double_t& y, 
					 Double_t& z) const;
  virtual Double_t     GetXAtVertex(Double_t x = 0, Double_t y = 0) const;

  virtual Double_t     GetPredictedChi2(const AliCluster* cluster);
  virtual Bool_t       Update(const AliCluster* cluster);

  virtual Double_t     SigmaPhi() const;
  virtual Double_t     SigmaTheta() const;
  virtual Double_t     SigmaPt() const;
  virtual TVector3     Momentum() const;
  virtual TVector3     Position() const;

  virtual void         Print(Option_t* option = "") const;

 private:
  Double_t             fX;          // x coordinate for the parametrisation
  Double_t             fAlpha;      // azimuthal angle for the parametrisation
  Double_t             fParam[5];   // track parameter (y, z, sin(azimuthal angel), tan(dip angle), 1/pt)
  Double_t             fCovar[15];  // track parameter covariance

  ClassDef(AliExternalTrackParam, 1)
};

#endif
Commit	Line	Data
51ad6848	1	#ifndef ALIEXTERNALTRACKPARAM_H
	2	#define ALIEXTERNALTRACKPARAM_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	#include "AliTrackParam.h"
	10	class AliKalmanTrack;
	11
	12	class AliExternalTrackParam: public AliTrackParam {
	13	public:
	14	AliExternalTrackParam();
	15	AliExternalTrackParam(Double_t x, Double_t alpha,
	16	const Double_t param[5], const Double_t covar[15]);
	17	AliExternalTrackParam(const AliKalmanTrack& track);
	18
	19	virtual const Double_t* GetParameter() const;
	20	virtual const Double_t* GetCovariance() const;
	21	virtual Double_t X() const {return fX;};
	22	virtual Double_t Alpha() const {return fAlpha;};
	23	virtual AliExternalTrackParam* CreateExternalParam() const;
	24	virtual void ResetCovariance(Double_t factor = 10.,
	25	Bool_t clearOffDiagonal = kTRUE);
	26	virtual Double_t Y() const {return fParam[0];};
	27	virtual Double_t Z() const {return fParam[1];};
	28
	29	virtual Bool_t PropagateTo(Double_t x, Double_t* length = NULL);
	30	virtual Bool_t RotateTo(Double_t alpha);
	31	virtual Bool_t CorrectForMaterial(Double_t dAngle2, Double_t dPrel);
	32	virtual Bool_t GetProlongationAt(Double_t x, Double_t& y,
	33	Double_t& z) const;
	34	virtual Double_t GetXAtVertex(Double_t x = 0, Double_t y = 0) const;
	35
	36	virtual Double_t GetPredictedChi2(const AliCluster* cluster);
	37	virtual Bool_t Update(const AliCluster* cluster);
	38
	39	virtual Double_t SigmaPhi() const;
	40	virtual Double_t SigmaTheta() const;
	41	virtual Double_t SigmaPt() const;
	42	virtual TVector3 Momentum() const;
	43	virtual TVector3 Position() const;
	44
	45	virtual void Print(Option_t* option = "") const;
	46
	47	private:
	48	Double_t fX; // x coordinate for the parametrisation
	49	Double_t fAlpha; // azimuthal angle for the parametrisation
	50	Double_t fParam[5]; // track parameter (y, z, sin(azimuthal angel), tan(dip angle), 1/pt)
	51	Double_t fCovar[15]; // track parameter covariance
	52
	53	ClassDef(AliExternalTrackParam, 1)
	54	};
	55
	56	#endif