#include <b2Fixture.h>

Public Member Functions
void	Dump (int32 bodyIndex)
	Dump this fixture to the log file.
const b2AABB &	GetAABB (int32 childIndex) const
b2Body *	GetBody ()
const b2Body *	GetBody () const
float32	GetDensity () const
	Get the density of this fixture.
const b2Filter &	GetFilterData () const
	Get the contact filtering data.
float32	GetFriction () const
	Get the coefficient of friction.
void	GetMassData (b2MassData *massData) const
b2Fixture *	GetNext ()
const b2Fixture *	GetNext () const
float32	GetRestitution () const
	Get the coefficient of restitution.
b2Shape *	GetShape ()
const b2Shape *	GetShape () const
b2Shape::Type	GetType () const
void *	GetUserData () const
bool	IsSensor () const
bool	RayCast (b2RayCastOutput *output, const b2RayCastInput &input, int32 childIndex) const
void	Refilter ()
	Call this if you want to establish collision that was previously disabled by b2ContactFilter::ShouldCollide.
void	SetDensity (float32 density)
void	SetFilterData (const b2Filter &filter)
void	SetFriction (float32 friction)
void	SetRestitution (float32 restitution)
void	SetSensor (bool sensor)
	Set if this fixture is a sensor.
void	SetUserData (void *data)
	Set the user data. Use this to store your application specific data.
bool	TestPoint (const b2Vec2 &p) const
Protected Member Functions
	b2Fixture ()
void	Create (b2BlockAllocator allocator, b2Body body, const b2FixtureDef *def)
void	CreateProxies (b2BroadPhase *broadPhase, const b2Transform &xf)
void	Destroy (b2BlockAllocator *allocator)
void	DestroyProxies (b2BroadPhase *broadPhase)
void	Synchronize (b2BroadPhase *broadPhase, const b2Transform &xf1, const b2Transform &xf2)
Protected Attributes
b2Body *	m_body
float32	m_density
b2Filter	m_filter
float32	m_friction
bool	m_isSensor
b2Fixture *	m_next
b2FixtureProxy *	m_proxies
int32	m_proxyCount
float32	m_restitution
b2Shape *	m_shape
void *	m_userData
Friends
class	b2Body
class	b2Contact
class	b2ContactManager
class	b2World

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.

Definition at line 107 of file b2Fixture.h.

Constructor & Destructor Documentation

b2Fixture::b2Fixture ( ) [protected]

Definition at line 30 of file b2Fixture.cpp.

Member Function Documentation

void b2Fixture::Create	(	b2BlockAllocator *	allocator,
		b2Body *	body,
		const b2FixtureDef *	def
	)		`[protected]`

Definition at line 41 of file b2Fixture.cpp.

void b2Fixture::CreateProxies	(	b2BroadPhase *	broadPhase,
		const b2Transform &	xf
	)		`[protected]`

Definition at line 122 of file b2Fixture.cpp.

void b2Fixture::Destroy ( b2BlockAllocator * allocator ) [protected]

Definition at line 69 of file b2Fixture.cpp.

void b2Fixture::DestroyProxies ( b2BroadPhase * broadPhase ) [protected]

Definition at line 139 of file b2Fixture.cpp.

void b2Fixture::Dump ( int32 bodyIndex )

Dump this fixture to the log file.

Definition at line 229 of file b2Fixture.cpp.

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.

Definition at line 339 of file b2Fixture.h.

b2Body * b2Fixture::GetBody ( ) [inline]

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

Returns:: the parent body.

Definition at line 273 of file b2Fixture.h.

const b2Body * b2Fixture::GetBody ( ) const [inline]

Definition at line 278 of file b2Fixture.h.

float32 b2Fixture::GetDensity ( ) const [inline]

Get the density of this fixture.

Definition at line 299 of file b2Fixture.h.

const b2Filter & b2Fixture::GetFilterData ( ) const [inline]

Get the contact filtering data.

Definition at line 258 of file b2Fixture.h.

float32 b2Fixture::GetFriction ( ) const [inline]

Get the coefficient of friction.

Definition at line 304 of file b2Fixture.h.

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.

Definition at line 334 of file b2Fixture.h.

b2Fixture * b2Fixture::GetNext ( ) [inline]

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

Returns:: the next shape.

Definition at line 283 of file b2Fixture.h.

const b2Fixture * b2Fixture::GetNext ( ) const [inline]

Definition at line 288 of file b2Fixture.h.

float32 b2Fixture::GetRestitution ( ) const [inline]

Get the coefficient of restitution.

Definition at line 314 of file b2Fixture.h.

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.

Definition at line 243 of file b2Fixture.h.

const b2Shape * b2Fixture::GetShape ( ) const [inline]

Definition at line 248 of file b2Fixture.h.

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.

Definition at line 238 of file b2Fixture.h.

void * b2Fixture::GetUserData ( ) const [inline]

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

Definition at line 263 of file b2Fixture.h.

bool b2Fixture::IsSensor ( ) const [inline]

Is this fixture a sensor (non-solid)?

Returns:: the true if the shape is a sensor.

Definition at line 253 of file b2Fixture.h.

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.

Definition at line 329 of file b2Fixture.h.

void b2Fixture::Refilter ( )

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

Definition at line 183 of file b2Fixture.cpp.

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.

Definition at line 293 of file b2Fixture.h.

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.

Definition at line 176 of file b2Fixture.cpp.

void b2Fixture::SetFriction ( float32 friction ) [inline]

Set the coefficient of friction. This will _not_ change the friction of existing contacts.

Definition at line 309 of file b2Fixture.h.

void b2Fixture::SetRestitution ( float32 restitution ) [inline]

Set the coefficient of restitution. This will _not_ change the restitution of existing contacts.

Definition at line 319 of file b2Fixture.h.

void b2Fixture::SetSensor ( bool sensor )

Set if this fixture is a sensor.

Definition at line 220 of file b2Fixture.cpp.

void b2Fixture::SetUserData ( void * data ) [inline]

Set the user data. Use this to store your application specific data.