b2WeldJoint Class Reference

#include <b2_weld_joint.h>

Inheritance diagram for b2WeldJoint:

Public Member Functions
b2Vec2	GetAnchorA () const override
	Get the anchor point on bodyA in world coordinates. More...
b2Vec2	GetAnchorB () const override
	Get the anchor point on bodyB in world coordinates. More...
b2Vec2	GetReactionForce (float inv_dt) const override
	Get the reaction force on bodyB at the joint anchor in Newtons. More...
float	GetReactionTorque (float inv_dt) const override
	Get the reaction torque on bodyB in N*m. More...
const b2Vec2 &	GetLocalAnchorA () const
	The local anchor point relative to bodyA's origin.
const b2Vec2 &	GetLocalAnchorB () const
	The local anchor point relative to bodyB's origin.
float	GetReferenceAngle () const
	Get the reference angle.
void	SetStiffness (float hz)
	Set/get stiffness in N*m.
float	GetStiffness () const
void	SetDamping (float damping)
	Set/get damping in N*m*s.
float	GetDamping () const
void	Dump () override
	Dump to b2Log. More...
Public Member Functions inherited from b2Joint
b2JointType	GetType () const
	Get the type of the concrete joint.
b2Body *	GetBodyA ()
	Get the first body attached to this joint.
b2Body *	GetBodyB ()
	Get the second body attached to this joint.
virtual b2Vec2	GetAnchorA () const =0
	Get the anchor point on bodyA in world coordinates. More...
virtual b2Vec2	GetAnchorB () const =0
	Get the anchor point on bodyB in world coordinates. More...
virtual b2Vec2	GetReactionForce (float inv_dt) const =0
	Get the reaction force on bodyB at the joint anchor in Newtons. More...
virtual float	GetReactionTorque (float inv_dt) const =0
	Get the reaction torque on bodyB in N*m. More...
b2Joint *	GetNext ()
	Get the next joint the world joint list.
const b2Joint *	GetNext () const
b2JointUserData &	GetUserData ()
	Get the user data pointer.
bool	IsEnabled () const
	Short-cut function to determine if either body is enabled.
bool	GetCollideConnected () const
virtual void	Dump ()
	Dump this joint to the log file. More...
virtual void	ShiftOrigin (const b2Vec2 &newOrigin)
	Shift the origin for any points stored in world coordinates. More...
virtual void	Draw (b2Draw *draw) const
	Debug draw this joint. More...

Protected Member Functions
	b2WeldJoint (const b2WeldJointDef *def)
void	InitVelocityConstraints (const b2SolverData &data) override
void	SolveVelocityConstraints (const b2SolverData &data) override
bool	SolvePositionConstraints (const b2SolverData &data) override
Protected Member Functions inherited from b2Joint
	b2Joint (const b2JointDef *def)
virtual void	InitVelocityConstraints (const b2SolverData &data)=0
virtual void	SolveVelocityConstraints (const b2SolverData &data)=0
virtual bool	SolvePositionConstraints (const b2SolverData &data)=0

Protected Attributes
float	m_stiffness
float	m_damping
float	m_bias
b2Vec2	m_localAnchorA
b2Vec2	m_localAnchorB
float	m_referenceAngle
float	m_gamma
b2Vec3	m_impulse
int32	m_indexA
int32	m_indexB
b2Vec2	m_rA
b2Vec2	m_rB
b2Vec2	m_localCenterA
b2Vec2	m_localCenterB
float	m_invMassA
float	m_invMassB
float	m_invIA
float	m_invIB
b2Mat33	m_mass
Protected Attributes inherited from b2Joint
b2JointType	m_type
b2Joint *	m_prev
b2Joint *	m_next
b2JointEdge	m_edgeA
b2JointEdge	m_edgeB
b2Body *	m_bodyA
b2Body *	m_bodyB
int32	m_index
bool	m_islandFlag
bool	m_collideConnected
b2JointUserData	m_userData

Friends
class	b2Joint

Additional Inherited Members
Static Protected Member Functions inherited from b2Joint
static b2Joint *	Create (const b2JointDef *def, b2BlockAllocator *allocator)
static void	Destroy (b2Joint *joint, b2BlockAllocator *allocator)

Detailed Description

A weld joint essentially glues two bodies together. A weld joint may distort somewhat because the island constraint solver is approximate.

Member Function Documentation

Dump()

void b2WeldJoint::Dump ( )

overridevirtual

Dump to b2Log.

Reimplemented from b2Joint.

GetAnchorA()

b2Vec2 b2WeldJoint::GetAnchorA ( ) const

overridevirtual

Get the anchor point on bodyA in world coordinates.

Implements b2Joint.

GetAnchorB()

b2Vec2 b2WeldJoint::GetAnchorB ( ) const

overridevirtual

Get the anchor point on bodyB in world coordinates.

Implements b2Joint.

GetReactionForce()

b2Vec2 b2WeldJoint::GetReactionForce ( float  inv_dt ) const

overridevirtual

Get the reaction force on bodyB at the joint anchor in Newtons.

Implements b2Joint.

GetReactionTorque()

float b2WeldJoint::GetReactionTorque ( float  inv_dt ) const

overridevirtual

Get the reaction torque on bodyB in N*m.

Implements b2Joint.

InitVelocityConstraints()

void b2WeldJoint::InitVelocityConstraints ( const b2SolverData &  data )

overrideprotectedvirtual

Implements b2Joint.

SolvePositionConstraints()

bool b2WeldJoint::SolvePositionConstraints ( const b2SolverData &  data )

overrideprotectedvirtual

Implements b2Joint.

SolveVelocityConstraints()

void b2WeldJoint::SolveVelocityConstraints ( const b2SolverData &  data )

overrideprotectedvirtual

Implements b2Joint.

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

• include/box2d/b2_weld_joint.h