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geant4/source/geometry/magneticfield/include/G4LineSection.hh
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2016-06-08 15:55:53 +02:00

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// This code implementation is the intellectual property of
// the GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4LineSection.hh,v 1.4 2000/04/27 09:14:05 gcosmo Exp $
// GEANT4 tag $Name: geant4-03-00 $
//
//
// class G4LineSection
//
// Class description:
//
// A utility class that calculates the distance of a point from a
// line section.
// History:
// - Created. J. Apostolakis.
// - Cosmetics against /0. and sqrt(<0.). V. Grichine, 25.02.00.
#ifndef G4LineSection_hh
#define G4LineSection_hh
#include "globals.hh"
#include "G4ThreeVector.hh"
class G4LineSection
{
public: // with description
G4LineSection( const G4ThreeVector& PntA, const G4ThreeVector& PntB );
G4double Dist( G4ThreeVector OtherPnt ) const;
G4double InvsqDistAB() const;
static G4double Distline( const G4ThreeVector& OtherPnt,
const G4ThreeVector& LinePntA,
const G4ThreeVector& LinePntB );
private:
G4ThreeVector EndpointA;
G4ThreeVector VecAtoB;
G4double inverse_square_distAB;
};
inline
G4double G4LineSection::InvsqDistAB() const
{
return inverse_square_distAB;
}
#endif