A circle shape. More...

Public Member Functions
b2Shape *	Clone (b2BlockAllocator *allocator) const
	Implement b2Shape.

int32	GetChildCount () const

bool	TestPoint (const b2Transform &transform, const b2Vec2 &p) const
	Implement b2Shape.

void	ComputeDistance (const b2Transform &xf, const b2Vec2 &p, float32 distance, b2Vec2 normal, int32 childIndex) const

bool	RayCast (b2RayCastOutput *output, const b2RayCastInput &input, const b2Transform &transform, int32 childIndex) const
	Implement b2Shape.

void	ComputeAABB (b2AABB *aabb, const b2Transform &transform, int32 childIndex) const

void	ComputeMass (b2MassData *massData, float32 density) const

int32	GetSupport (const b2Vec2 &d) const
	Get the supporting vertex index in the given direction.

const b2Vec2 &	GetSupportVertex (const b2Vec2 &d) const
	Get the supporting vertex in the given direction.

int32	GetVertexCount () const
	Get the vertex count.

const b2Vec2 &	GetVertex (int32 index) const
	Get a vertex by index. Used by b2Distance.

Public Member Functions inherited from b2Shape
Type	GetType () const

Public Attributes
b2Vec2	m_p
	Position.

Public Attributes inherited from b2Shape
Type	m_type

float32	m_radius

Additional Inherited Members
Public Types inherited from b2Shape
enum	Type { e_circle = 0, e_edge = 1, e_polygon = 2, e_chain = 3, e_typeCount = 4 }

Detailed Description

A circle shape.

Member Function Documentation

void b2CircleShape::ComputeAABB	(	b2AABB *	aabb,
		const b2Transform &	transform,
		int32	childIndex
	)		const

virtual

Implements b2Shape.

void b2CircleShape::ComputeDistance	(	const b2Transform &	xf,
		const b2Vec2 &	p,
		float32 *	distance,
		b2Vec2 *	normal,
		int32	childIndex
	)		const

virtual

Compute the distance from the current shape to the specified point. This only works for convex shapes.

Parameters

xf	the shape world transform.
p	a point in world coordinates.
distance	returns the distance from the current shape.
normal	returns the direction in which the distance increases.

Implements b2Shape.

void b2CircleShape::ComputeMass	(	b2MassData *	massData,
		float32	density
	)		const

virtual

Implements b2Shape.

int32 b2CircleShape::GetChildCount ( ) const

virtual

Implements b2Shape.

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