Last change
on this file since 13331dc was df408d2, checked in by Franco BEDESCHI <bed@…>, 4 years ago |
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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