Misc

Defines
#define	CP_BUFFER_BYTES   (32*1024)
	Allocated size for various Chipmunk buffers.
#define	cpcalloc   calloc
	Chipmunk calloc() alias.
#define	cprealloc   realloc
	Chipmunk realloc() alias.
#define	cpfree   free
	Chipmunk free() alias.
#define	CP_VERSION_MAJOR   6
#define	CP_VERSION_MINOR   0
#define	CP_VERSION_RELEASE   3
Typedefs
typedef struct cpHashSet	cpHashSet
Functions
void	cpInitChipmunk (void)
cpFloat	cpMomentForCircle (cpFloat m, cpFloat r1, cpFloat r2, cpVect offset)
cpFloat	cpAreaForCircle (cpFloat r1, cpFloat r2)
cpFloat	cpMomentForSegment (cpFloat m, cpVect a, cpVect b)
cpFloat	cpAreaForSegment (cpVect a, cpVect b, cpFloat r)
	Calculate the area of a fattened (capsule shaped) line segment.
cpFloat	cpMomentForPoly (cpFloat m, int numVerts, const cpVect *verts, cpVect offset)
	Calculate the moment of inertia for a solid polygon shape assuming it's center of gravity is at it's centroid. The offset is added to each vertex.
cpFloat	cpAreaForPoly (const int numVerts, const cpVect *verts)
cpVect	cpCentroidForPoly (const int numVerts, const cpVect *verts)
	Calculate the natural centroid of a polygon.
void	cpRecenterPoly (const int numVerts, cpVect *verts)
	Center the polygon on the origin. (Subtracts the centroid of the polygon from each vertex)
cpFloat	cpMomentForBox (cpFloat m, cpFloat width, cpFloat height)
	Calculate the moment of inertia for a solid box.
cpFloat	cpMomentForBox2 (cpFloat m, cpBB box)
	Calculate the moment of inertia for a solid box.
Variables
const char *	cpVersionString
	Version string.

---

Define Documentation

#define CP_BUFFER_BYTES   (32*1024)

Allocated size for various Chipmunk buffers.

#define CP_VERSION_MAJOR   6

#define CP_VERSION_MINOR   0

#define CP_VERSION_RELEASE   3

#define cpcalloc   calloc

Chipmunk calloc() alias.

#define cpfree   free

Chipmunk free() alias.

#define cprealloc   realloc

Chipmunk realloc() alias.

---

Typedef Documentation

typedef struct cpHashSet cpHashSet

---

Function Documentation

cpFloat cpAreaForCircle	(	cpFloat	r1,
		cpFloat	r2
	)

Calculate area of a hollow circle. r1 and r2 are the inner and outer diameters. A solid circle has an inner diameter of 0.

cpFloat cpAreaForPoly	(	const int	numVerts,
		const cpVect *	verts
	)

Calculate the signed area of a polygon. A Clockwise winding gives positive area. This is probably backwards from what you expect, but matches Chipmunk's the winding for poly shapes.

cpFloat cpAreaForSegment	(	cpVect	a,
		cpVect	b,
		cpFloat	r
	)

Calculate the area of a fattened (capsule shaped) line segment.

cpVect cpCentroidForPoly	(	const int	numVerts,
		const cpVect *	verts
	)

Calculate the natural centroid of a polygon.

void cpInitChipmunk

(

void

)

Deprecated:

cpFloat cpMomentForBox	(	cpFloat	m,
		cpFloat	width,
		cpFloat	height
	)

Calculate the moment of inertia for a solid box.

cpFloat cpMomentForBox2	(	cpFloat	m,
		cpBB	box
	)

Calculate the moment of inertia for a solid box.

cpFloat cpMomentForCircle	(	cpFloat	m,
		cpFloat	r1,
		cpFloat	r2,
		cpVect	offset
	)

Calculate the moment of inertia for a circle. r1 and r2 are the inner and outer diameters. A solid circle has an inner diameter of 0.

cpFloat cpMomentForPoly	(	cpFloat	m,
		int	numVerts,
		const cpVect *	verts,
		cpVect	offset
	)

Calculate the moment of inertia for a solid polygon shape assuming it's center of gravity is at it's centroid. The offset is added to each vertex.

cpFloat cpMomentForSegment	(	cpFloat	m,
		cpVect	a,
		cpVect	b
	)

Calculate the moment of inertia for a line segment. Beveling radius is not supported.

void cpRecenterPoly	(	const int	numVerts,
		cpVect *	verts
	)

Center the polygon on the origin. (Subtracts the centroid of the polygon from each vertex)

---

Variable Documentation

const char* cpVersionString

Version string.