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geant4/source/geometry/magneticfield/include/G4LineSection.hh
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2019-12-06 15:12:28 +01:00

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//
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//
// G4LineSection
//
// Class description:
//
// A utility class that calculates the distance of a point from a
// line section.
// Created: J.Apostolakis, 1999
// --------------------------------------------------------------------
#ifndef G4LineSection_hh
#define G4LineSection_hh
#include "G4Types.hh"
#include "G4ThreeVector.hh"
class G4LineSection
{
public: // with description
G4LineSection( const G4ThreeVector& PntA,
const G4ThreeVector& PntB );
G4double Dist( G4ThreeVector OtherPnt ) const;
inline G4double GetABdistanceSq() const;
inline static G4double Distline( const G4ThreeVector& OtherPnt,
const G4ThreeVector& LinePntA,
const G4ThreeVector& LinePntB );
private:
G4ThreeVector EndpointA;
G4ThreeVector VecAtoB;
G4double fABdistanceSq = 0.0;
};
// Inline methods implementations
inline
G4double G4LineSection::GetABdistanceSq() const
{
return fABdistanceSq;
}
inline
G4double G4LineSection::Distline( const G4ThreeVector& OtherPnt,
const G4ThreeVector& LinePntA,
const G4ThreeVector& LinePntB )
{
G4LineSection LineAB( LinePntA, LinePntB ); // Line from A to B
return LineAB.Dist( OtherPnt );
}
#endif