cpBB

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

Classes
struct	cpBB
	Chipmunk's axis-aligned 2D bounding box type. (left, bottom, right, top) More...

Typedefs
typedef struct cpBB	cpBB
	Chipmunk's axis-aligned 2D bounding box type. (left, bottom, right, top)

Functions
static cpBB	cpBBNew (const cpFloat l, const cpFloat b, const cpFloat r, const cpFloat t)
	Convenience constructor for cpBB structs.
static cpBB	cpBBNewForExtents (const cpVect c, const cpFloat hw, const cpFloat hh)
	Constructs a cpBB centered on a point with the given extents (half sizes).
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 cpVect	cpBBCenter (cpBB bb)
	Returns the center of a bounding box.
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.
static cpVect	cpBBClampVect (const cpBB bb, const cpVect v)
	Clamp a vector to a bounding box.
static cpVect	cpBBWrapVect (const cpBB bb, const cpVect v)
	Wrap a vector to a bounding box.
static cpBB	cpBBOffset (const cpBB bb, const cpVect v)
	Returns a bounding box offseted by v.

Detailed Description

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