Detailed Description

Class representing an axis aligned rectangle in 2D space.

The coordinate convention for this class is bottom <= top and left <= right, both of which are enforced in the constructor. Unless stated otherwise, all operations that involve comparisons use the same tolerance epsilon as vec3::isApprox (which is 1e-12).

See also: Intersections between geometry primitives can be computed using the sets of free functions Geometry::intersection() and Geometry::intersects().

Public Member Functions
	AlignedRectangle2D (const vec2 &lowerLeft, const vec2 &upperRight)

	AlignedRectangle2D (const AlignedRectangle2D &)=default

AlignedRectangle2D &	operator= (const AlignedRectangle2D &)=default

bool	operator== (const AlignedRectangle2D &) const

bool	operator!= (const AlignedRectangle2D &) const

bool	isApprox (const AlignedRectangle2D &) const

bool	includesPoint (const vec2 &point) const

vec2	closestPoint (const vec2 &point) const

double	distanceToPoint (const vec2 &point) const

Utils::Variant< std::pair< double, double >, double, std::nullptr_t >	lineSegmentIntersection (const vec2 &lineStart, const vec2 &lineEnd, bool extentToInfiniteLine=false) const
	Finds the intersection with a 2D line segment defined by its end points.

bool	intersectsDisk (const vec2 &center, double radius) const
	Checks if the rectangle overlaps with a given disk.

const vec2 &	lowerLeft () const

const vec2 &	upperRight () const

double	left () const

double	right () const

double	top () const

double	bottom () const

double	width () const

double	height () const

vec2	center () const

vec2	extent () const

Static Public Member Functions
static AlignedRectangle2D	fromXYWidthHeight (double x, double y, double width, double height)
	Create a rectangle by providing the x and y coordintes of the lower-left corner and a width and height.

static AlignedRectangle2D	fromCenterExtent (vec2 center, vec2 extent)
	Create a rectangle by providing the point in the center and an extent (i.e. width and height).

Member Function Documentation

◆ lineSegmentIntersection()

Utils::Variant< std::pair< double, double >, double, std::nullptr_t > lineSegmentIntersection	(	const vec2 &	lineStart,
		const vec2 &	lineEnd,
		bool	extentToInfiniteLine = false ) const

Finds the intersection with a 2D line segment defined by its end points.

Objects involving NAN will never intersect. Returns one or more lambda values (such that p = lineStart + lambda * (lineEnd - lineStart)) for the start and end of the intersection, or nullptr in case of no intersection

◆ intersectsDisk()

bool intersectsDisk	(	const vec2 &	center,
		double	radius ) const

Checks if the rectangle overlaps with a given disk.

Note that negative radius causes undefined behaviour.

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

ImFusion/Core/Geometry/Rectangle.h

Detailed Description

Public Member Functions

Static Public Member Functions

Member Function Documentation

◆ lineSegmentIntersection()

◆ intersectsDisk()