#include <b2_fixture.h>

Public Member Functions
void	Dump (int32 bodyIndex)
	Dump this fixture to the log file. More...

const b2AABB &	GetAABB (int32 childIndex) const

b2Body *	GetBody ()

const b2Body *	GetBody () const

float	GetDensity () const
	Get the density of this fixture. More...

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

float	GetFriction () const
	Get the coefficient of friction. More...

void	GetMassData (b2MassData *massData) const

b2Fixture *	GetNext ()

const b2Fixture *	GetNext () const

float	GetRestitution () const
	Get the coefficient of restitution. More...

float	GetRestitutionThreshold () const
	Get the restitution velocity threshold. More...

b2Shape *	GetShape ()

const b2Shape *	GetShape () const

b2Shape::Type	GetType () const

b2FixtureUserData &	GetUserData ()

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. More...

void	SetDensity (float density)

void	SetFilterData (const b2Filter &filter)

void	SetFriction (float friction)

void	SetRestitution (float restitution)

void	SetRestitutionThreshold (float threshold)

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

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

float	m_density

b2Filter	m_filter

float	m_friction

bool	m_isSensor

b2Fixture *	m_next

b2FixtureProxy *	m_proxies

int32	m_proxyCount

float	m_restitution

float	m_restitutionThreshold

b2Shape *	m_shape

b2FixtureUserData	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 116 of file b2_fixture.h.

Constructor & Destructor Documentation

◆ b2Fixture()

b2Fixture::b2Fixture ( )

protected

Definition at line 34 of file b2_fixture.cpp.

Member Function Documentation

◆ Create()

void b2Fixture::Create	(	b2BlockAllocator *	allocator,
		b2Body *	body,
		const b2FixtureDef *	def
	)

protected

Definition at line 44 of file b2_fixture.cpp.

◆ CreateProxies()

void b2Fixture::CreateProxies	(	b2BroadPhase *	broadPhase,
		const b2Transform &	xf
	)

protected

Definition at line 126 of file b2_fixture.cpp.

◆ Destroy()

void b2Fixture::Destroy ( b2BlockAllocator * allocator )

protected

Definition at line 73 of file b2_fixture.cpp.

◆ DestroyProxies()

void b2Fixture::DestroyProxies ( b2BroadPhase * broadPhase )

protected

Definition at line 143 of file b2_fixture.cpp.

◆ Dump()

void b2Fixture::Dump ( int32 bodyIndex )

Dump this fixture to the log file.

Definition at line 233 of file b2_fixture.cpp.

◆ GetAABB()

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 359 of file b2_fixture.h.

◆ GetBody() [1/2]

b2Body * b2Fixture::GetBody ( )

inline

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

Returns: the parent body.

Definition at line 283 of file b2_fixture.h.

◆ GetBody() [2/2]

const b2Body * b2Fixture::GetBody ( ) const

inline

Definition at line 288 of file b2_fixture.h.

◆ GetDensity()

float b2Fixture::GetDensity ( ) const

inline

Get the density of this fixture.

Definition at line 309 of file b2_fixture.h.

◆ GetFilterData()

const b2Filter & b2Fixture::GetFilterData ( ) const

inline

Get the contact filtering data.

Definition at line 273 of file b2_fixture.h.

◆ GetFriction()

float b2Fixture::GetFriction ( ) const

inline

Get the coefficient of friction.

Definition at line 314 of file b2_fixture.h.

◆ GetMassData()

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 354 of file b2_fixture.h.

◆ GetNext() [1/2]

b2Fixture * b2Fixture::GetNext ( )

inline

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

Returns: the next shape.

Definition at line 293 of file b2_fixture.h.

◆ GetNext() [2/2]

const b2Fixture * b2Fixture::GetNext ( ) const

inline

Definition at line 298 of file b2_fixture.h.

◆ GetRestitution()

float b2Fixture::GetRestitution ( ) const

inline

Get the coefficient of restitution.

Definition at line 324 of file b2_fixture.h.

◆ GetRestitutionThreshold()

float b2Fixture::GetRestitutionThreshold ( ) const

inline

Get the restitution velocity threshold.

Definition at line 334 of file b2_fixture.h.

◆ GetShape() [1/2]

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 258 of file b2_fixture.h.

◆ GetShape() [2/2]

const b2Shape * b2Fixture::GetShape ( ) const

inline

Definition at line 263 of file b2_fixture.h.

◆ GetType()

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 253 of file b2_fixture.h.

◆ GetUserData()

b2FixtureUserData & b2Fixture::GetUserData ( )

inline

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

Definition at line 278 of file b2_fixture.h.

◆ IsSensor()

bool b2Fixture::IsSensor ( ) const

inline

Is this fixture a sensor (non-solid)?

Returns: the true if the shape is a sensor.

Definition at line 268 of file b2_fixture.h.

◆ RayCast()

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.
childIndex	the child shape index (e.g. edge index)

Definition at line 349 of file b2_fixture.h.

◆ Refilter()

void b2Fixture::Refilter ( )

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

Definition at line 187 of file b2_fixture.cpp.

◆ SetDensity()

void b2Fixture::SetDensity ( float 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 303 of file b2_fixture.h.

◆ SetFilterData()

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 180 of file b2_fixture.cpp.

◆ SetFriction()

void b2Fixture::SetFriction ( float friction )

inline

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

Definition at line 319 of file b2_fixture.h.

◆ SetRestitution()

void b2Fixture::SetRestitution ( float restitution )

inline

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

Definition at line 329 of file b2_fixture.h.

◆ SetRestitutionThreshold()

void b2Fixture::SetRestitutionThreshold ( float threshold )

inline

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

Definition at line 339 of file b2_fixture.h.

◆ SetSensor()

void b2Fixture::SetSensor ( bool sensor )

Set if this fixture is a sensor.

Definition at line 224 of file b2_fixture.cpp.

◆ Synchronize()

void b2Fixture::Synchronize	(	b2BroadPhase *	broadPhase,
		const b2Transform &	xf1,
		const b2Transform &	xf2
	)

protected

Definition at line 156 of file b2_fixture.cpp.

◆ TestPoint()

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

inline

Test a point for containment in this fixture.

Parameters

p	a point in world coordinates.

Definition at line 344 of file b2_fixture.h.

Friends And Related Function Documentation

◆ b2Body

friend class b2Body

friend

Definition at line 214 of file b2_fixture.h.

◆ b2Contact

friend class b2Contact

friend

Definition at line 216 of file b2_fixture.h.

◆ b2ContactManager

friend class b2ContactManager

friend

Definition at line 217 of file b2_fixture.h.

◆ b2World

friend class b2World

friend

Definition at line 215 of file b2_fixture.h.

Member Data Documentation

◆ m_body

b2Body* b2Fixture::m_body

protected

Definition at line 235 of file b2_fixture.h.

◆ m_density

float b2Fixture::m_density

protected

Definition at line 232 of file b2_fixture.h.

◆ m_filter

b2Filter b2Fixture::m_filter

protected

Definition at line 246 of file b2_fixture.h.

◆ m_friction

float b2Fixture::m_friction

protected

Definition at line 239 of file b2_fixture.h.

◆ m_isSensor

bool b2Fixture::m_isSensor

protected

Definition at line 248 of file b2_fixture.h.

◆ m_next

b2Fixture* b2Fixture::m_next

protected

Definition at line 234 of file b2_fixture.h.

◆ m_proxies

b2FixtureProxy* b2Fixture::m_proxies

protected

Definition at line 243 of file b2_fixture.h.

◆ m_proxyCount

int32 b2Fixture::m_proxyCount

protected

Definition at line 244 of file b2_fixture.h.

◆ m_restitution

float b2Fixture::m_restitution

protected

Definition at line 240 of file b2_fixture.h.

◆ m_restitutionThreshold

float b2Fixture::m_restitutionThreshold

protected

Definition at line 241 of file b2_fixture.h.

◆ m_shape

b2Shape* b2Fixture::m_shape

protected

Definition at line 237 of file b2_fixture.h.

◆ m_userData

b2FixtureUserData b2Fixture::m_userData

protected

Definition at line 250 of file b2_fixture.h.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ b2Fixture()

Member Function Documentation

◆ Create()

◆ CreateProxies()

◆ Destroy()

◆ DestroyProxies()

◆ Dump()

◆ GetAABB()

◆ GetBody() [1/2]

◆ GetBody() [2/2]

◆ GetDensity()

◆ GetFilterData()

◆ GetFriction()

◆ GetMassData()

◆ GetNext() [1/2]

◆ GetNext() [2/2]

◆ GetRestitution()

◆ GetRestitutionThreshold()

◆ GetShape() [1/2]

◆ GetShape() [2/2]

◆ GetType()

◆ GetUserData()

◆ IsSensor()

◆ RayCast()

◆ Refilter()

◆ SetDensity()

◆ SetFilterData()

◆ SetFriction()

◆ SetRestitution()

◆ SetRestitutionThreshold()

◆ SetSensor()

◆ Synchronize()

◆ TestPoint()

Friends And Related Function Documentation

◆ b2Body

◆ b2Contact

◆ b2ContactManager

◆ b2World

Member Data Documentation

◆ m_body

◆ m_density

◆ m_filter

◆ m_friction

◆ m_isSensor

◆ m_next

◆ m_proxies

◆ m_proxyCount

◆ m_restitution

◆ m_restitutionThreshold

◆ m_shape

◆ m_userData