#include <b2Joint.h>

Inheritance diagram for b2Joint:

Public Member Functions
virtual void	Dump ()
	Dump this joint to the log file.
virtual b2Vec2	GetAnchorA () const =0
	Get the anchor point on bodyA in world coordinates.
virtual b2Vec2	GetAnchorB () const =0
	Get the anchor point on bodyB in world coordinates.
b2Body *	GetBodyA ()
	Get the first body attached to this joint.
b2Body *	GetBodyB ()
	Get the second body attached to this joint.
bool	GetCollideConnected () const
b2Joint *	GetNext ()
	Get the next joint the world joint list.
const b2Joint *	GetNext () const
virtual b2Vec2	GetReactionForce (float32 inv_dt) const =0
	Get the reaction force on bodyB at the joint anchor in Newtons.
virtual float32	GetReactionTorque (float32 inv_dt) const =0
	Get the reaction torque on bodyB in N*m.
b2JointType	GetType () const
	Get the type of the concrete joint.
void *	GetUserData () const
	Get the user data pointer.
bool	IsActive () const
	Short-cut function to determine if either body is inactive.
void	SetUserData (void *data)
	Set the user data pointer.
virtual void	ShiftOrigin (const b2Vec2 &newOrigin)
	Shift the origin for any points stored in world coordinates.
Protected Member Functions
	b2Joint (const b2JointDef *def)
virtual void	InitVelocityConstraints (const b2SolverData &data)=0
virtual bool	SolvePositionConstraints (const b2SolverData &data)=0
virtual void	SolveVelocityConstraints (const b2SolverData &data)=0
virtual	~b2Joint ()
Static Protected Member Functions
static b2Joint *	Create (const b2JointDef def, b2BlockAllocator allocator)
static void	Destroy (b2Joint joint, b2BlockAllocator allocator)
Protected Attributes
b2Body *	m_bodyA
b2Body *	m_bodyB
bool	m_collideConnected
b2JointEdge	m_edgeA
b2JointEdge	m_edgeB
int32	m_index
bool	m_islandFlag
b2Joint *	m_next
b2Joint *	m_prev
b2JointType	m_type
void *	m_userData
Friends
class	b2Body
class	b2GearJoint
class	b2Island
class	b2World

Detailed Description

The base joint class. Joints are used to constraint two bodies together in various fashions. Some joints also feature limits and motors.

Definition at line 103 of file b2Joint.h.

Constructor & Destructor Documentation

b2Joint::b2Joint ( const b2JointDef * def ) [protected]

Definition at line 183 of file b2Joint.cpp.

virtual b2Joint::~b2Joint ( ) [inline, protected, virtual]

Definition at line 162 of file b2Joint.h.

Member Function Documentation

b2Joint * b2Joint::Create	(	const b2JointDef *	def,
		b2BlockAllocator *	allocator
	)		`[static, protected]`

Definition at line 37 of file b2Joint.cpp.

void b2Joint::Destroy	(	b2Joint *	joint,
		b2BlockAllocator *	allocator
	)		`[static, protected]`

Definition at line 128 of file b2Joint.cpp.

virtual void b2Joint::Dump ( ) [inline, virtual]

Dump this joint to the log file.

Reimplemented in b2RevoluteJoint, b2PrismaticJoint, b2WheelJoint, b2PulleyJoint, b2DistanceJoint, b2MotorJoint, b2MouseJoint, b2WeldJoint, b2FrictionJoint, b2RopeJoint, and b2GearJoint.

Definition at line 147 of file b2Joint.h.

virtual b2Vec2 b2Joint::GetAnchorA ( ) const [pure virtual]

Get the anchor point on bodyA in world coordinates.

Implemented in b2RevoluteJoint, b2PrismaticJoint, b2PulleyJoint, b2WheelJoint, b2DistanceJoint, b2MouseJoint, b2WeldJoint, b2MotorJoint, b2RopeJoint, b2GearJoint, and b2FrictionJoint.

virtual b2Vec2 b2Joint::GetAnchorB ( ) const [pure virtual]

Get the anchor point on bodyB in world coordinates.

Implemented in b2RevoluteJoint, b2PrismaticJoint, b2PulleyJoint, b2WheelJoint, b2DistanceJoint, b2MouseJoint, b2WeldJoint, b2MotorJoint, b2RopeJoint, b2GearJoint, and b2FrictionJoint.

b2Body * b2Joint::GetBodyA ( ) [inline]

Get the first body attached to this joint.

Definition at line 191 of file b2Joint.h.

b2Body * b2Joint::GetBodyB ( ) [inline]

Get the second body attached to this joint.

Definition at line 196 of file b2Joint.h.

bool b2Joint::GetCollideConnected ( ) const [inline]

Get collide connected. Note: modifying the collide connect flag won't work correctly because the flag is only checked when fixture AABBs begin to overlap.

Definition at line 221 of file b2Joint.h.

b2Joint * b2Joint::GetNext ( ) [inline]

Get the next joint the world joint list.

Definition at line 201 of file b2Joint.h.

const b2Joint * b2Joint::GetNext ( ) const [inline]

Definition at line 206 of file b2Joint.h.

virtual b2Vec2 b2Joint::GetReactionForce ( float32 inv_dt ) const [pure virtual]