Implements a "hot pixel" as used in the Snap Rounding algorithm. More...

#include <HotPixel.h>

Public Member Functions
double	getWidth () const

double	getScaleFactor () const

	HotPixel (const geom::Coordinate &pt, double scaleFactor)

const geom::Coordinate &	getCoordinate () const

bool	intersects (const geom::Coordinate &p0, const geom::Coordinate &p1) const

bool	intersects (const geom::Coordinate &p) const

bool	isNode () const

void	setToNode ()

std::ostream &	operator<< (std::ostream &os)

Detailed Description

Implements a "hot pixel" as used in the Snap Rounding algorithm.

A hot pixel contains the interior of the tolerance square and the boundary minus the top and right segments.

The hot pixel operations are all computed in the integer domain to avoid rounding problems.

Constructor & Destructor Documentation

geos::noding::snapround::HotPixel::HotPixel	(	const geom::Coordinate &	pt,
		double	scaleFactor
	)

Creates a new hot pixel.

Parameters

pt	the coordinate at the centre of the pixel. Will be kept by reference, so make sure to keep it alive.
scaleFactor	the scaleFactor determining the pixel size

double geos::noding::snapround::HotPixel::getWidth ( ) const

inline

Gets the width of the hot pixel in the original coordinate system.

bool geos::noding::snapround::HotPixel::intersects ( const geom::Coordinate & p ) const

Tests whether a coordinate lies in (intersects) this hot pixel.

Parameters

p	the coordinate to test

bool geos::noding::snapround::HotPixel::intersects	(	const geom::Coordinate &	p0,
		const geom::Coordinate &	p1
	)		const

Tests whether the line segment (p0-p1) intersects this hot pixel.

Parameters

p0	the first coordinate of the line segment to test
p1	the second coordinate of the line segment to test

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