#include <b2ChainShape.h>

Inheritance diagram for b2ChainShape:

Public Member Functions
	b2ChainShape ()
void	Clear ()
	Clear all data.
b2Shape *	Clone (b2BlockAllocator *allocator) const
	Implement b2Shape. Vertices are cloned using b2Alloc.
void	ComputeAABB (b2AABB *aabb, const b2Transform &transform, int32 childIndex) const
void	ComputeMass (b2MassData *massData, float32 density) const
void	CreateChain (const b2Vec2 *vertices, int32 count)
void	CreateLoop (const b2Vec2 *vertices, int32 count)
int32	GetChildCount () const
void	GetChildEdge (b2EdgeShape *edge, int32 index) const
	Get a child edge.
bool	RayCast (b2RayCastOutput *output, const b2RayCastInput &input, const b2Transform &transform, int32 childIndex) const
	Implement b2Shape.
void	SetNextVertex (const b2Vec2 &nextVertex)
void	SetPrevVertex (const b2Vec2 &prevVertex)
bool	TestPoint (const b2Transform &transform, const b2Vec2 &p) const
	~b2ChainShape ()
	The destructor frees the vertices using b2Free.
Public Attributes
int32	m_count
	The vertex count.
bool	m_hasNextVertex
bool	m_hasPrevVertex
b2Vec2	m_nextVertex
b2Vec2	m_prevVertex
b2Vec2 *	m_vertices
	The vertices. Owned by this class.

Detailed Description

A chain shape is a free form sequence of line segments. The chain has two-sided collision, so you can use inside and outside collision. Therefore, you may use any winding order. Since there may be many vertices, they are allocated using b2Alloc. Connectivity information is used to create smooth collisions. WARNING: The chain will not collide properly if there are self-intersections.

Definition at line 32 of file b2ChainShape.h.

Constructor & Destructor Documentation

b2ChainShape::b2ChainShape ( ) [inline]

Definition at line 95 of file b2ChainShape.h.

b2ChainShape::~b2ChainShape ( )

The destructor frees the vertices using b2Free.

Definition at line 24 of file b2ChainShape.cpp.

Member Function Documentation

void b2ChainShape::Clear ( )

Clear all data.

Definition at line 29 of file b2ChainShape.cpp.

b2Shape * b2ChainShape::Clone ( b2BlockAllocator * allocator ) const [virtual]

Implement b2Shape. Vertices are cloned using b2Alloc.

Implements b2Shape.

Definition at line 91 of file b2ChainShape.cpp.

void b2ChainShape::ComputeAABB	(	b2AABB *	aabb,
		const b2Transform &	transform,
		int32	childIndex
	)		const `[virtual]`

See also:: b2Shape::ComputeAABB

Implements b2Shape.

Definition at line 168 of file b2ChainShape.cpp.

void b2ChainShape::ComputeMass	(	b2MassData *	massData,
		float32	density
	)		const `[virtual]`

Chains have zero mass.

See also:: b2Shape::ComputeMass

Implements b2Shape.

Definition at line 186 of file b2ChainShape.cpp.

void b2ChainShape::CreateChain	(	const b2Vec2 *	vertices,
		int32	count
	)

Create a chain with isolated end vertices.

Parameters:

vertices	an array of vertices, these are copied
count	the vertex count

Definition at line 58 of file b2ChainShape.cpp.

void b2ChainShape::CreateLoop	(	const b2Vec2 *	vertices,
		int32	count
	)

Create a loop. This automatically adjusts connectivity.

Parameters:

vertices	an array of vertices, these are copied
count	the vertex count

Definition at line 36 of file b2ChainShape.cpp.

int32 b2ChainShape::GetChildCount ( ) const [virtual]

See also:: b2Shape::GetChildCount

Implements b2Shape.

Definition at line 103 of file b2ChainShape.cpp.

void b2ChainShape::GetChildEdge	(	b2EdgeShape *	edge,
		int32	index
	)		const

Get a child edge.

Definition at line 109 of file b2ChainShape.cpp.

bool b2ChainShape::RayCast	(	b2RayCastOutput *	output,
		const b2RayCastInput &	input,
		const b2Transform &	transform,
		int32	childIndex
	)		const `[virtual]`

Implement b2Shape.

Implements b2Shape.

Definition at line 148 of file b2ChainShape.cpp.

void b2ChainShape::SetNextVertex ( const b2Vec2 & nextVertex )

Establish connectivity to a vertex that follows the last vertex. Don't call this for loops.

Definition at line 85 of file b2ChainShape.cpp.

void b2ChainShape::SetPrevVertex ( const b2Vec2 & prevVertex )

Establish connectivity to a vertex that precedes the first vertex. Don't call this for loops.

Definition at line 79 of file b2ChainShape.cpp.

bool b2ChainShape::TestPoint	(	const b2Transform &	transform,
		const b2Vec2 &	p
	)		const `[virtual]`

This always return false.

See also:: b2Shape::TestPoint

Implements b2Shape.

Definition at line 141 of file b2ChainShape.cpp.

Member Data Documentation

int32 b2ChainShape::m_count

The vertex count.

Definition at line 89 of file b2ChainShape.h.

bool b2ChainShape::m_hasNextVertex

Definition at line 92 of file b2ChainShape.h.

bool b2ChainShape::m_hasPrevVertex

Definition at line 92 of file b2ChainShape.h.

b2Vec2 b2ChainShape::m_nextVertex

Definition at line 91 of file b2ChainShape.h.

b2Vec2 b2ChainShape::m_prevVertex

Definition at line 91 of file b2ChainShape.h.

b2Vec2* b2ChainShape::m_vertices

The vertices. Owned by this class.

Definition at line 86 of file b2ChainShape.h.

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

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation