PILine< Type > Class Template Reference

Two-dimensional line segment. More...

#include <piline.h>

Public Member Functions
	PILine ()
	Constructs empty segment.
	PILine (const PIPoint< Type > &p0_, const PIPoint< Type > &p1_)
	Constructs segment from two points.
	PILine (Type x0, Type y0, Type x1, Type y1)
	Constructs segment from endpoint coordinates.
PILine< Type > &	set (const PIPoint< Type > &p0_, const PIPoint< Type > &p1_)
	Sets segment endpoints from two points.
PILine< Type > &	set (Type x0, Type y0, Type x1, Type y1)
	Sets segment endpoints from coordinates.
bool	isEmpty () const
	Returns true if segment endpoints are equal.
Type	width () const
	Returns horizontal span between endpoints.
Type	height () const
	Returns vertical span between endpoints.
PILine< Type > &	translate (Type x, Type y)
	Shifts the segment by x and y.
PILine< Type > &	translate (const PIPoint< Type > &p)
	Shifts the segment by a point offset.
PILine< Type >	translated (Type x, Type y) const
	Returns translated copy of the segment.
PILine< Type >	translated (const PIPoint< Type > &p) const
	Returns copy shifted by a point offset.
PILine< Type > &	move (Type x, Type y)
	Same as translate().
PILine< Type > &	move (const PIPoint< Type > &p)
	Same as translate().
PILine< Type >	moved (Type x, Type y) const
	Same as translated().
PILine< Type >	moved (const PIPoint< Type > &p) const
	Same as translated().
void	operator+= (Type x)
	Shifts both coordinates by x.
void	operator+= (const PIPoint< Type > &p)
	Shifts the segment by a point offset.
void	operator-= (Type x)
	Shifts both coordinates by -x.
void	operator-= (const PIPoint< Type > &p)
	Shifts the segment by the negated point offset.
PILine< Type >	operator+ (const PIPoint< Type > &p)
	Returns segment shifted by a point offset.
PILine< Type >	operator- (const PIPoint< Type > &p)
	Returns segment shifted by the negated point offset.
bool	operator== (const PILine< Type > &r) const
	Checks whether segment endpoints are equal.
bool	operator!= (const PILine< Type > &r) const
	Checks whether segments differ.

Public Attributes
PIPoint< Type >	p0
	Segment start point.
PIPoint< Type >	p1
	Segment end point.

Detailed Description

template<typename Type>
class PILine< Type >

Two-dimensional line segment.

Stores start and end points of a segment on a plane.