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

#ifndef ALITRACKFITTERRIEMAN_H
#define ALITRACKFITTERRIEMAN_H

#include "TMatrixDSym.h"

#include "AliTrackFitter.h"

class AliTrackFitterRieman : public AliTrackFitter{
 public:
  AliTrackFitterRieman();
  AliTrackFitterRieman(AliTrackPointArray *array, Bool_t owner = kTRUE);
  AliTrackFitterRieman(const AliTrackFitterRieman &rieman);
  AliTrackFitterRieman &operator =(const AliTrackFitterRieman& rieman);
  virtual ~AliTrackFitterRieman();

  Bool_t Fit(UShort_t volId,
	     AliTrackPointArray *pVolId, AliTrackPointArray *pTrack,
	     AliAlignObj::ELayerID layerRangeMin = AliAlignObj::kFirstLayer,
	     AliAlignObj::ELayerID layerRangeMax = AliAlignObj::kLastLayer);
  Bool_t GetPCA(const AliTrackPoint &p, AliTrackPoint &p2) const;

  void Reset();
  void AddPoint(Float_t x, Float_t y, Float_t z, Float_t sy, Float_t sz);
  void Update();

  Double_t GetC(); 
  Double_t GetYat(Double_t x);
  Double_t GetZat(Double_t x);
  Double_t GetDYat(Double_t x);
  Double_t GetDZat(Double_t x);
  Bool_t   GetXYZat(Double_t r, Float_t *xyz);

 protected:

  Double_t      fAlpha;     //angle to transform to the fitting coordinate system
  Double_t      fSumXY[9];  //sums for XY part
  Double_t      fSumXZ[9];  //sums for XZ part
  Bool_t        fConv;      // indicates convergation

 private:

  ClassDef(AliTrackFitterRieman,1)  // Fast fit of helices on ITS RecPoints

};

#endif
Commit	Line	Data
98937d93	1	#ifndef ALITRACKFITTERRIEMAN_H
	2	#define ALITRACKFITTERRIEMAN_H
	3
	4	#include "TMatrixDSym.h"
	5
	6	#include "AliTrackFitter.h"
	7
	8	class AliTrackFitterRieman : public AliTrackFitter{
	9	public:
	10	AliTrackFitterRieman();
	11	AliTrackFitterRieman(AliTrackPointArray *array, Bool_t owner = kTRUE);
	12	AliTrackFitterRieman(const AliTrackFitterRieman &rieman);
	13	AliTrackFitterRieman &operator =(const AliTrackFitterRieman& rieman);
	14	virtual ~AliTrackFitterRieman();
	15
	16	Bool_t Fit(UShort_t volId,
	17	AliTrackPointArray pVolId, AliTrackPointArray pTrack,
	18	AliAlignObj::ELayerID layerRangeMin = AliAlignObj::kFirstLayer,
	19	AliAlignObj::ELayerID layerRangeMax = AliAlignObj::kLastLayer);
	20	Bool_t GetPCA(const AliTrackPoint &p, AliTrackPoint &p2) const;
	21
	22	void Reset();
	23	void AddPoint(Float_t x, Float_t y, Float_t z, Float_t sy, Float_t sz);
	24	void Update();
	25
	26	Double_t GetC();
	27	Double_t GetYat(Double_t x);
	28	Double_t GetZat(Double_t x);
	29	Double_t GetDYat(Double_t x);
	30	Double_t GetDZat(Double_t x);
	31	Bool_t GetXYZat(Double_t r, Float_t *xyz);
	32
	33	protected:
	34
	35	Double_t fAlpha; //angle to transform to the fitting coordinate system
	36	Double_t fSumXY[9]; //sums for XY part
	37	Double_t fSumXZ[9]; //sums for XZ part
	38	Bool_t fConv; // indicates convergation
	39
	40	private:
	41
	42	ClassDef(AliTrackFitterRieman,1) // Fast fit of helices on ITS RecPoints
	43
	44	};
	45
	46	#endif