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CbmRichRingFitterEllipseTau.h
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1 
11 #ifndef CBM_RICH_RING_FITTER_ELLIPSE_TAU
12 #define CBM_RICH_RING_FITTER_ELLIPSE_TAU
13 
14 #include <vector>
15 #include "CbmRichRingFitterEllipseBase.h"
16 #include "TMath.h"
17 #include "TVectorD.h"
18 #include "TMatrixD.h"
19 #include "TMatrixDEigen.h"
20 
21 #include <iostream>
22 
23 using std::vector;
24 
25 
35 class CbmRichRingFitterEllipseTau : public CbmRichRingFitterEllipseBase
36 {
37 public:
38 
42  CbmRichRingFitterEllipseTau();
43 
47  virtual ~CbmRichRingFitterEllipseTau();
48 
52  virtual void DoFit(
53  CbmRichRingLight *ring);
54 
55 private:
56 
57  double fM[36];
58  double fP[25];
59  double fQ[25];
60  double fZ[MAX_NOF_HITS_IN_RING*6];
61  double fZT[MAX_NOF_HITS_IN_RING*6];
62  double fAlgPar[6];
63 
68  void TransformEllipse(
69  CbmRichRingLight* ring);
70 
74  void InitMatrices(
75  CbmRichRingLight* ring);
76 
80  void Taubin();
81 
85  void Inv5x5();
86 
90  void AMultB(
91  const double * const ap,
92  int na,
93  int ncolsa,
94  const double * const bp,
95  int nb,
96  int ncolsb,
97  double *cp);
98 
102  void Jacobi(
103  double a[5][5],
104  double d[5],
105  double v[5][5]);
106 
110  void Eigsrt(
111  double d[5],
112  double v[5][5]);
113 };
114 
115 #endif