Line2D Class Reference

2D line. More...

#include <Line2D.h>

Inheritance diagram for Line2D:

Collaboration diagram for Line2D:

Public Member Functions
	Line2D (double x, double y, double vecx, double vecy)
	Constructor. More...
	~Line2D ()
	Destructor.
const HepGeom::Point3D< double > &	getInitialPoint () const
	Get initial point.
const HepGeom::Vector3D< double > &	getVector () const
	Get vector.
int	findIntersection (const Line2D &line, HepGeom::Point3D< double > *intersection) const
	Find intersection with a line. More...
int	findIntersection (const Circle2D &circle, HepGeom::Point3D< double > intersections[2]) const
	Find intersections with a circle. More...
int	findIntersection (const Arc2D &arc, HepGeom::Point3D< double > intersections[2]) const
	Find intersections with an arc. More...
int	findIntersection (const Line2D &line, HepGeom::Point3D< double > *intersection, double t[2]) const
	Find intersection with a line. More...

Protected Member Functions
int	findIntersection (const Circle2D &circle, HepGeom::Point3D< double > intersections[2], double t[2], double angles[2]) const
	Find intersections with a circle. More...
int	selectIntersections (HepGeom::Point3D< double > *intersections, bool *condition, int n) const
	Select intersections. More...

Protected Attributes
HepGeom::Point3D< double >	m_Point
	Initial point.
HepGeom::Vector3D< double >	m_Vector
	Vector.

Detailed Description

2D line.

Equation: m_Point + m_Vector * t

Definition at line 30 of file Line2D.h.

Constructor & Destructor Documentation

Line2D()

Line2D	(	double	x,
		double	y,
		double	vecx,
		double	vecy
	)

Constructor.

Parameters

[in]	x	Initial point X coordinate.
[in]	y	Initial point y coordinate.
[in]	vecx	Vector X component.
[in]	vecy	Vector Y component.

Definition at line 17 of file Line2D.cc.

                                                               :
  m_Point(x, y, 0),
  m_Vector(vecx, vecy, 0)
{
}

Member Function Documentation

findIntersection() [1/5]

int findIntersection	(	const Arc2D &	arc,
		HepGeom::Point3D< double >	intersections[2]
	)		const

Find intersections with an arc.

Parameters

[in]	arc	Arc.
[out]	intersections	Intersections.

Returns

Number of intersections (0, 1 or 2).

Definition at line 43 of file Line2D.cc.

findIntersection() [2/5]

int findIntersection	(	const Circle2D &	circle,
		HepGeom::Point3D< double >	intersections[2]
	)		const

Find intersections with a circle.

Parameters

[in]	circle	Circle.
[out]	intersections	Intersections.

Returns

Number of intersections (0, 1 or 2).

Definition at line 35 of file Line2D.cc.

findIntersection() [3/5]

int findIntersection ( const Circle2D &  circle, HepGeom::Point3D< double >  intersections[2], double  t[2], double  angles[2]  ) const

protected

Find intersections with a circle.

Parameters

[in]	circle	Circle.
[out]	intersections	Intersections.
[out]	t	Values of t for intersection points.
[out]	angles	Values of angles for intersection points.

Returns

Number of intersections (0, 1 or 2).

Definition at line 95 of file Line2D.cc.

findIntersection() [4/5]

int findIntersection	(	const Line2D &	line,
		HepGeom::Point3D< double > *	intersection
	)		const

Find intersection with a line.

Parameters

[in]	line	Line.
[out]	intersection	Intersection.

Returns

Number of intersections (0 or 1).

Definition at line 27 of file Line2D.cc.

findIntersection() [5/5]

int findIntersection	(	const Line2D &	line,
		HepGeom::Point3D< double > *	intersection,
		double	t[2]
	)		const

Find intersection with a line.

Parameters

[in]	line	Line.
[out]	intersection	Intersection.
[out]	t	Values of t for intersection point (t[0] - this line, t[1] - line from argument).

Returns

Number of intersections (0 or 1).

If (*this) and line are the same line then 0 is returned.

Definition at line 65 of file Line2D.cc.

selectIntersections()

int selectIntersections ( HepGeom::Point3D< double > *  intersections, bool *  condition, int  n  ) const

protected

Select intersections.

Parameters

[in,out]	intersections	Intersections.
[in]	condition	Selection condition.
[in]	n	Number of intersections.

Returns

Number of selected intersections.

Definition at line 132 of file Line2D.cc.

---

The documentation for this class was generated from the following files:

• klm/eklm/geometry/include/Line2D.h
• klm/eklm/geometry/src/Line2D.cc