Methods for computing and working with octants of the Cartesian plane. More...

#include <Octant.h>

Static Public Member Functions
static int	octant (double dx, double dy)

static int	octant (const geom::CoordinateXY &p0, const geom::CoordinateXY &p1)

static int	octant (const geom::CoordinateXY p0, const geom::CoordinateXY p1)

Detailed Description

Methods for computing and working with octants of the Cartesian plane.

Octants are numbered as follows:

2|1 3 | 0 —+– 4 | 7 5|6

If line segments lie along a coordinate axis, the octant is the lower of the two possible values.

Last port: noding/Octant.java rev. 1.2 (JTS-1.7)

Member Function Documentation

static int geos::noding::Octant::octant	(	const geom::CoordinateXY &	p0,
		const geom::CoordinateXY &	p1
	)

static

Returns the octant of a directed line segment from p0 to p1.

static int geos::noding::Octant::octant	(	double	dx,
		double	dy
	)

static

Returns the octant of a directed line segment (specified as x and y displacements, which cannot both be 0).

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