cpBB

Data Structures
struct	cpBB
	Chipmunk's axis-aligned 2D bounding box type. (left, bottom, right, top) More...
Functions
static cpBB	cpBBNew (const cpFloat l, const cpFloat b, const cpFloat r, const cpFloat t)
	Convenience constructor for cpBB structs.
static cpBB	cpBBNewForCircle (const cpVect p, const cpFloat r)
	Constructs a cpBB for a circle with the given position and radius.
static cpBool	cpBBIntersects (const cpBB a, const cpBB b)
	Returns true if a and b intersect.
static cpBool	cpBBContainsBB (const cpBB bb, const cpBB other)
	Returns true if other lies completely within bb.
static cpBool	cpBBContainsVect (const cpBB bb, const cpVect v)
	Returns true if bb contains v.
static cpBB	cpBBMerge (const cpBB a, const cpBB b)
	Returns a bounding box that holds both bounding boxes.
static cpBB	cpBBExpand (const cpBB bb, const cpVect v)
	Returns a bounding box that holds both bb and v.
static cpFloat	cpBBArea (cpBB bb)
	Returns the area of the bounding box.
static cpFloat	cpBBMergedArea (cpBB a, cpBB b)
	Merges a and b and returns the area of the merged bounding box.
static cpFloat	cpBBSegmentQuery (cpBB bb, cpVect a, cpVect b)
	Returns the fraction along the segment query the cpBB is hit. Returns INFINITY if it doesn't hit.
static cpBool	cpBBIntersectsSegment (cpBB bb, cpVect a, cpVect b)
	Return true if the bounding box intersects the line segment with ends a and b.
cpVect	cpBBClampVect (const cpBB bb, const cpVect v)
	Clamp a vector to a bounding box.
cpVect	cpBBWrapVect (const cpBB bb, const cpVect v)
	Wrap a vector to a bounding box.

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Detailed Description

Chipmunk's axis-aligned 2D bounding box type along with a few handy routines.

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Function Documentation

static cpFloat cpBBArea

(

cpBB

bb

)

[inline, static]

Returns the area of the bounding box.

cpVect cpBBClampVect	(	const cpBB	bb,
		const cpVect	v
	)

Clamp a vector to a bounding box.

static cpBool cpBBContainsBB	(	const cpBB	bb,
		const cpBB	other
	)		[inline, static]

Returns true if other lies completely within bb.

static cpBool cpBBContainsVect	(	const cpBB	bb,
		const cpVect	v
	)		[inline, static]

Returns true if bb contains v.

static cpBB cpBBExpand	(	const cpBB	bb,
		const cpVect	v
	)		[inline, static]

Returns a bounding box that holds both bb and v.

static cpBool cpBBIntersects	(	const cpBB	a,
		const cpBB	b
	)		[inline, static]

Returns true if a and b intersect.

static cpBool cpBBIntersectsSegment	(	cpBB	bb,
		cpVect	a,
		cpVect	b
	)		[inline, static]

Return true if the bounding box intersects the line segment with ends a and b.

static cpBB cpBBMerge	(	const cpBB	a,
		const cpBB	b
	)		[inline, static]

Returns a bounding box that holds both bounding boxes.

static cpFloat cpBBMergedArea	(	cpBB	a,
		cpBB	b
	)		[inline, static]

Merges a and b and returns the area of the merged bounding box.

static cpBB cpBBNew	(	const cpFloat	l,
		const cpFloat	b,
		const cpFloat	r,
		const cpFloat	t
	)		[inline, static]

Convenience constructor for cpBB structs.

static cpBB cpBBNewForCircle	(	const cpVect	p,
		const cpFloat	r
	)		[inline, static]

Constructs a cpBB for a circle with the given position and radius.

static cpFloat cpBBSegmentQuery	(	cpBB	bb,
		cpVect	a,
		cpVect	b
	)		[inline, static]

Returns the fraction along the segment query the cpBB is hit. Returns INFINITY if it doesn't hit.

cpVect cpBBWrapVect	(	const cpBB	bb,
		const cpVect	v
	)

Wrap a vector to a bounding box.