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Last change
on this file since 127644a was df408d2, checked in by Franco BEDESCHI <bed@…>, 4 years ago |
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Fixed compatibility with ROOT5/minor changes to TrkUtil
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Property mode
set to
100644
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File size:
1.6 KB
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| 1 | //
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| 2 | #ifndef G__TRKUTIL_H
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| 3 | #define G__TRKUTIL_H
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| 4 | //
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| 5 | #include <TVector3.h>
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| 6 | #include <TVectorD.h>
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| 7 | #include <TMatrixDSym.h>
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| 8 | //
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| 9 | //
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| 10 | // Class test
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| 11 |
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| 12 | class TrkUtil {
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| 13 | //
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| 14 | //
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| 15 | protected:
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| 16 | Double_t fBz; // Solenoid magnetic field
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| 17 | //
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| 18 | // Service routines
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| 19 | //
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| 20 | void SetBfield(Double_t Bz) { fBz = Bz; }
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| 21 | TVectorD XPtoPar(TVector3 x, TVector3 p, Double_t Q);
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| 22 | TVector3 ParToP(TVectorD Par);
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| 23 | //
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| 24 | // Conversion to ACTS parametrization
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| 25 | //
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| 26 | TVectorD ParToACTS(TVectorD Par); // Parameter conversion
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| 27 | TMatrixDSym CovToACTS(TVectorD Par, TMatrixDSym Cov); // Covariance conversion
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| 28 | //
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| 29 | // Conversion to ILC parametrization
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| 30 | //
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| 31 | TVectorD ParToILC(TVectorD Par); // Parameter conversion
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| 32 | TMatrixDSym CovToILC(TMatrixDSym Cov); // Covariance conversion
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| 33 |
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| 34 | public:
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| 35 | //
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| 36 | // Constructors
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| 37 | TrkUtil();
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| 38 | TrkUtil(Double_t Bz);
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| 39 | // Destructor
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| 40 | ~TrkUtil();
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| 41 | //
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| 42 | // Overload methods to allow call without instantiating class
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| 43 | //
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| 44 | static Double_t cSpeed()
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| 45 | {
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| 46 | Double_t c = 2.99792458e8; // speed of light m/sec
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| 47 | //return TMath::C()*1.0e-9; // Incompatible with root5
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| 48 | return c*1.0e-9; // Reduced speed of light
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| 49 | }
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| 50 | //
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| 51 | // Service routines
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| 52 | //
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| 53 | static TVectorD XPtoPar(TVector3 x, TVector3 p, Double_t Q, Double_t Bz);
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| 54 | static TVector3 ParToX(TVectorD Par); // position of minimum distance from z axis
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| 55 | static TVector3 ParToP(TVectorD Par, Double_t Bz); // Get Momentum from track parameters
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| 56 | static Double_t ParToQ(TVectorD Par); // Get track charge
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| 57 | //
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| 58 | // Conversion from meters to mm
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| 59 | //
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| 60 | static TVectorD ParToMm(TVectorD Par); // Parameter conversion
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| 61 | static TMatrixDSym CovToMm(TMatrixDSym Cov); // Covariance conversion
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| 62 |
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| 63 | };
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| 64 |
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| 65 | #endif
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