Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/include/G4LineSection.hh

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
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 25 //
 26 // G4LineSection
 27 //
 28 // Class description:
 29 //
 30 // A utility class that calculates the distance of a point from a 
 31 // line section.
 32 
 33 // Created: J.Apostolakis, 1999
 34 // --------------------------------------------------------------------
 35 
 36 #ifndef G4LineSection_hh
 37 #define G4LineSection_hh
 38 
 39 #include "G4Types.hh" 
 40 #include "G4ThreeVector.hh"
 41 
 42 class G4LineSection
 43 {
 44   public:  // with description
 45 
 46      G4LineSection( const G4ThreeVector& PntA,
 47                     const G4ThreeVector& PntB );
 48 
 49      G4double Dist( const G4ThreeVector& OtherPnt ) const;
 50 
 51      inline G4double GetABdistanceSq() const;
 52 
 53      inline static G4double Distline( const G4ThreeVector& OtherPnt, 
 54                                       const G4ThreeVector& LinePntA, 
 55                                       const G4ThreeVector& LinePntB );
 56   private:
 57 
 58      G4ThreeVector EndpointA;
 59      G4ThreeVector VecAtoB;
 60      G4double fABdistanceSq = 0.0;
 61 };
 62 
 63 // Inline methods implementations
 64 
 65 inline
 66 G4double G4LineSection::GetABdistanceSq() const
 67 {
 68   return fABdistanceSq;
 69 }
 70 
 71 inline
 72 G4double G4LineSection::Distline( const G4ThreeVector& OtherPnt, 
 73                                   const G4ThreeVector& LinePntA, 
 74                                   const G4ThreeVector& LinePntB )
 75 {
 76   G4LineSection LineAB( LinePntA, LinePntB );  // Line from A to B
 77   return LineAB.Dist( OtherPnt );
 78 }
 79 
 80 #endif
 81