#include <b2Fixture.h>

Public Member Functions
b2Shape::Type	GetType () const

b2Shape *	GetShape ()

const b2Shape *	GetShape () const

void	SetSensor (bool sensor)
	Set if this fixture is a sensor.

bool	IsSensor () const

void	SetFilterData (const b2Filter &filter)

const b2Filter &	GetFilterData () const
	Get the contact filtering data.

void	Refilter ()
	Call this if you want to establish collision that was previously disabled by b2ContactFilter::ShouldCollide.

b2Body *	GetBody ()

const b2Body *	GetBody () const

b2Fixture *	GetNext ()

const b2Fixture *	GetNext () const

void *	GetUserData () const

void	SetUserData (void *data)
	Set the user data. Use this to store your application specific data.

bool	TestPoint (const b2Vec2 &p) const

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

bool	RayCast (b2RayCastOutput *output, const b2RayCastInput &input, int32 childIndex) const

void	GetMassData (b2MassData *massData) const

void	SetDensity (float32 density)

float32	GetDensity () const
	Get the density of this fixture.

float32	GetFriction () const
	Get the coefficient of friction.

void	SetFriction (float32 friction)

float32	GetRestitution () const
	Get the coefficient of restitution.

void	SetRestitution (float32 restitution)

const b2AABB &	GetAABB (int32 childIndex) const

void	Dump (int32 bodyIndex)
	Dump this fixture to the log file.

Protected Member Functions
void	Create (b2BlockAllocator allocator, b2Body body, const b2FixtureDef *def)

void	Destroy (b2BlockAllocator *allocator)

void	CreateProxies (b2BroadPhase *broadPhase, const b2Transform &xf)

void	DestroyProxies (b2BroadPhase *broadPhase)

void	Synchronize (b2BroadPhase *broadPhase, const b2Transform &xf1, const b2Transform &xf2)

Protected Attributes
float32	m_density

b2Fixture *	m_next

b2Body *	m_body

b2Shape *	m_shape

float32	m_friction

float32	m_restitution

b2FixtureProxy *	m_proxies

int32	m_proxyCount

b2Filter	m_filter

bool	m_isSensor

void *	m_userData

Friends
class	b2Body

class	b2World

class	b2Contact

class	b2ContactManager

Detailed Description

A fixture is used to attach a shape to a body for collision detection. A fixture inherits its transform from its parent. Fixtures hold additional non-geometric data such as friction, collision filters, etc. Fixtures are created via b2Body::CreateFixture.

Warning: you cannot reuse fixtures.

Member Function Documentation

void b2Fixture::ComputeDistance	(	const b2Vec2 &	p,
		float32 *	distance,
		b2Vec2 *	normal,
		int32	childIndex
	)		const

inline

Compute the distance from this fixture.

Parameters

p	a point in world coordinates.

const b2AABB & b2Fixture::GetAABB ( int32 childIndex ) const

inline

Get the fixture's AABB. This AABB may be enlarge and/or stale. If you need a more accurate AABB, compute it using the shape and the body transform.

b2Body * b2Fixture::GetBody ( )

inline

Get the parent body of this fixture. This is NULL if the fixture is not attached.

Returns: the parent body.

void b2Fixture::GetMassData ( b2MassData * massData ) const

inline

Get the mass data for this fixture. The mass data is based on the density and the shape. The rotational inertia is about the shape's origin. This operation may be expensive.

b2Fixture * b2Fixture::GetNext ( )

inline

Get the next fixture in the parent body's fixture list.

Returns: the next shape.

b2Shape * b2Fixture::GetShape ( )

inline

Get the child shape. You can modify the child shape, however you should not change the number of vertices because this will crash some collision caching mechanisms. Manipulating the shape may lead to non-physical behavior.

b2Shape::Type b2Fixture::GetType ( ) const

inline

Get the type of the child shape. You can use this to down cast to the concrete shape.

Returns: the shape type.

void * b2Fixture::GetUserData ( ) const

inline

Get the user data that was assigned in the fixture definition. Use this to store your application specific data.

bool b2Fixture::IsSensor ( ) const

inline

Is this fixture a sensor (non-solid)?

Returns: the true if the shape is a sensor.

bool b2Fixture::RayCast	(	b2RayCastOutput *	output,
		const b2RayCastInput &	input,
		int32	childIndex
	)		const

inline

Cast a ray against this shape.

Parameters

output	the ray-cast results.
input	the ray-cast input parameters.

void b2Fixture::SetDensity ( float32 density )

inline

Set the density of this fixture. This will not automatically adjust the mass of the body. You must call b2Body::ResetMassData to update the body's mass.

void b2Fixture::SetFilterData ( const b2Filter & filter )

Set the contact filtering data. This will not update contacts until the next time step when either parent body is active and awake. This automatically calls Refilter.

void b2Fixture::SetFriction ( float32 friction )

inline

Set the coefficient of friction. This will not change the friction of existing contacts.

void b2Fixture::SetRestitution ( float32 restitution )

inline

Set the coefficient of restitution. This will not change the restitution of existing contacts.

bool b2Fixture::TestPoint ( const b2Vec2 & p ) const

inline

Test a point for containment in this fixture.

Parameters

p	a point in world coordinates.

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

b2Fixture.h
b2Fixture.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Function Documentation