Corrected protection.
[u/mrichter/AliRoot.git] / STEER / AliTrackResidualsLinear.h
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bf9a6ef9 1#ifndef ALITRACKRESIDUALSLINEAR_H
2#define ALITRACKRESIDUALSLINEAR_H
3
4//************************************************************************
5// AliTrackResidualsLinear: derived class (from AliTrackResiduals) which *
6// implements a simple linear minimization of the track residuals chi2. *
7// The minimization relies on the fact that the alignment parameters *
8// (angles and translations) are small. *
9// *
10// *
11//************************************************************************
12
13#include "AliAlignObj.h"
14#include "AliTrackResiduals.h"
15class TLinearFitter;
16
17class AliTrackResidualsLinear : public AliTrackResiduals {
18
19 public:
20 AliTrackResidualsLinear();
21 AliTrackResidualsLinear(Int_t ntracks);
22 AliTrackResidualsLinear(const AliTrackResidualsLinear &res);
23 AliTrackResidualsLinear& operator= (const AliTrackResidualsLinear& res);
24 virtual ~AliTrackResidualsLinear();
25 Bool_t Minimize();
26 void SetRobust(Float_t fraction){fFraction=fraction;}
dfce6628 27 const Double_t * GetParameters() const { return fParams;}
28 const Double_t * GetCovariance() const { return fCovar;}
bf9a6ef9 29 protected:
30 Bool_t Update();
31 void AddPoints(AliTrackPoint &p, AliTrackPoint &pprime);
32 TLinearFitter *fFitter; // !Linear fitter
33 Float_t fFraction; // fraction of points for robust fitter if less 0 - no robust fitter invoked
dfce6628 34 Double_t fParams[6]; // resulting parameters
35 Double_t fCovar[36]; // covariance matrix
bf9a6ef9 36 Double_t fChi2Orig; // original chi2
37 ClassDef(AliTrackResidualsLinear,1)
38
39};
40
41#endif