#include <b2_pulley_joint.h>

Inheritance diagram for b2PulleyJoint:

Public Member Functions
void	Dump () override
	Dump joint to dmLog. More...

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...

float	GetCurrentLengthA () const
	Get the current length of the segment attached to bodyA. More...

float	GetCurrentLengthB () const
	Get the current length of the segment attached to bodyB. More...

b2Vec2	GetGroundAnchorA () const
	Get the first ground anchor. More...

b2Vec2	GetGroundAnchorB () const
	Get the second ground anchor. More...

float	GetLengthA () const
	Get the current length of the segment attached to bodyA. More...

float	GetLengthB () const
	Get the current length of the segment attached to bodyB. More...

float	GetRatio () const
	Get the pulley ratio. 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...

void	ShiftOrigin (const b2Vec2 &newOrigin) override
	Implement b2Joint::ShiftOrigin. More...

Public Member Functions inherited from b2Joint
virtual void	Draw (b2Draw *draw) const
	Debug draw this joint. More...

b2Body *	GetBodyA ()
	Get the first body attached to this joint. More...

b2Body *	GetBodyB ()
	Get the second body attached to this joint. More...

bool	GetCollideConnected () const

b2Joint *	GetNext ()
	Get the next joint the world joint list. More...

const b2Joint *	GetNext () const

b2JointType	GetType () const
	Get the type of the concrete joint. More...

b2JointUserData &	GetUserData ()
	Get the user data pointer. More...

bool	IsEnabled () const
	Short-cut function to determine if either body is enabled. More...

Protected Member Functions
	b2PulleyJoint (const b2PulleyJointDef *data)

void	InitVelocityConstraints (const b2SolverData &data) override

bool	SolvePositionConstraints (const b2SolverData &data) override

void	SolveVelocityConstraints (const b2SolverData &data) override

Protected Member Functions inherited from b2Joint
	b2Joint (const b2JointDef *def)

virtual	~b2Joint ()

Protected Attributes
float	m_constant

b2Vec2	m_groundAnchorA

b2Vec2	m_groundAnchorB

float	m_impulse

int32	m_indexA

int32	m_indexB

float	m_invIA

float	m_invIB

float	m_invMassA

float	m_invMassB

float	m_lengthA

float	m_lengthB

b2Vec2	m_localAnchorA

b2Vec2	m_localAnchorB

b2Vec2	m_localCenterA

b2Vec2	m_localCenterB

float	m_mass

b2Vec2	m_rA

float	m_ratio

b2Vec2	m_rB

b2Vec2	m_uA

b2Vec2	m_uB

Protected Attributes inherited from b2Joint
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

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

The pulley joint is connected to two bodies and two fixed ground points. The pulley supports a ratio such that: length1 + ratio * length2 <= constant Yes, the force transmitted is scaled by the ratio. Warning: the pulley joint can get a bit squirrelly by itself. They often work better when combined with prismatic joints. You should also cover the the anchor points with static shapes to prevent one side from going to zero length.

Definition at line 84 of file b2_pulley_joint.h.

Constructor & Destructor Documentation

◆ b2PulleyJoint()

b2PulleyJoint::b2PulleyJoint ( const b2PulleyJointDef * data )

protected

Definition at line 58 of file b2_pulley_joint.cpp.

Member Function Documentation

◆ Dump()

void b2PulleyJoint::Dump ( )

overridevirtual

Dump joint to dmLog.

Reimplemented from b2Joint.

Definition at line 329 of file b2_pulley_joint.cpp.

◆ GetAnchorA()

b2Vec2 b2PulleyJoint::GetAnchorA ( ) const

overridevirtual

Get the anchor point on bodyA in world coordinates.

Implements b2Joint.

Definition at line 266 of file b2_pulley_joint.cpp.

◆ GetAnchorB()

b2Vec2 b2PulleyJoint::GetAnchorB ( ) const

overridevirtual

Get the anchor point on bodyB in world coordinates.

Implements b2Joint.

Definition at line 271 of file b2_pulley_joint.cpp.

◆ GetCurrentLengthA()

float b2PulleyJoint::GetCurrentLengthA ( ) const

Get the current length of the segment attached to bodyA.

Definition at line 313 of file b2_pulley_joint.cpp.

◆ GetCurrentLengthB()

float b2PulleyJoint::GetCurrentLengthB ( ) const

Get the current length of the segment attached to bodyB.

Definition at line 321 of file b2_pulley_joint.cpp.

◆ GetGroundAnchorA()

b2Vec2 b2PulleyJoint::GetGroundAnchorA ( ) const

Get the first ground anchor.

Definition at line 288 of file b2_pulley_joint.cpp.

◆ GetGroundAnchorB()

b2Vec2 b2PulleyJoint::GetGroundAnchorB ( ) const

Get the second ground anchor.

Definition at line 293 of file b2_pulley_joint.cpp.

◆ GetLengthA()

float b2PulleyJoint::GetLengthA ( ) const

Get the current length of the segment attached to bodyA.

Definition at line 298 of file b2_pulley_joint.cpp.

◆ GetLengthB()

float b2PulleyJoint::GetLengthB ( ) const

Get the current length of the segment attached to bodyB.

Definition at line 303 of file b2_pulley_joint.cpp.

◆ GetRatio()

float b2PulleyJoint::GetRatio ( ) const

Get the pulley ratio.

Definition at line 308 of file b2_pulley_joint.cpp.

◆ GetReactionForce()

b2Vec2 b2PulleyJoint::GetReactionForce ( float inv_dt ) const

overridevirtual

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

Implements b2Joint.

Definition at line 276 of file b2_pulley_joint.cpp.

◆ GetReactionTorque()

float b2PulleyJoint::GetReactionTorque ( float inv_dt ) const

overridevirtual

Get the reaction torque on bodyB in N*m.

Implements b2Joint.

Definition at line 282 of file b2_pulley_joint.cpp.

◆ InitVelocityConstraints()

void b2PulleyJoint::InitVelocityConstraints ( const b2SolverData & data )

overrideprotectedvirtual

Implements b2Joint.

Definition at line 77 of file b2_pulley_joint.cpp.

◆ ShiftOrigin()

void b2PulleyJoint::ShiftOrigin ( const b2Vec2 & newOrigin )

overridevirtual

Implement b2Joint::ShiftOrigin.

Reimplemented from b2Joint.

Definition at line 348 of file b2_pulley_joint.cpp.

◆ SolvePositionConstraints()

bool b2PulleyJoint::SolvePositionConstraints ( const b2SolverData & data )

overrideprotectedvirtual

Implements b2Joint.

Definition at line 194 of file b2_pulley_joint.cpp.

◆ SolveVelocityConstraints()

void b2PulleyJoint::SolveVelocityConstraints ( const b2SolverData & data )

overrideprotectedvirtual

Implements b2Joint.

Definition at line 167 of file b2_pulley_joint.cpp.

Friends And Related Function Documentation

◆ b2Joint

friend class b2Joint

friend

Definition at line 122 of file b2_pulley_joint.h.

Member Data Documentation

◆ m_constant

float b2PulleyJoint::m_constant

protected

Definition at line 137 of file b2_pulley_joint.h.

◆ m_groundAnchorA

b2Vec2 b2PulleyJoint::m_groundAnchorA

protected

Definition at line 129 of file b2_pulley_joint.h.

◆ m_groundAnchorB

b2Vec2 b2PulleyJoint::m_groundAnchorB

protected

Definition at line 130 of file b2_pulley_joint.h.

◆ m_impulse

float b2PulleyJoint::m_impulse

protected

Definition at line 139 of file b2_pulley_joint.h.

◆ m_indexA

int32 b2PulleyJoint::m_indexA

protected

Definition at line 142 of file b2_pulley_joint.h.

◆ m_indexB

int32 b2PulleyJoint::m_indexB

protected

Definition at line 143 of file b2_pulley_joint.h.

◆ m_invIA

float b2PulleyJoint::m_invIA

protected

Definition at line 152 of file b2_pulley_joint.h.

◆ m_invIB

float b2PulleyJoint::m_invIB

protected

Definition at line 153 of file b2_pulley_joint.h.

◆ m_invMassA

float b2PulleyJoint::m_invMassA

protected

Definition at line 150 of file b2_pulley_joint.h.

◆ m_invMassB

float b2PulleyJoint::m_invMassB

protected

Definition at line 151 of file b2_pulley_joint.h.

◆ m_lengthA

float b2PulleyJoint::m_lengthA

protected

Definition at line 131 of file b2_pulley_joint.h.

◆ m_lengthB

float b2PulleyJoint::m_lengthB

protected

Definition at line 132 of file b2_pulley_joint.h.

◆ m_localAnchorA

b2Vec2 b2PulleyJoint::m_localAnchorA

protected

Definition at line 135 of file b2_pulley_joint.h.

◆ m_localAnchorB

b2Vec2 b2PulleyJoint::m_localAnchorB

protected

Definition at line 136 of file b2_pulley_joint.h.

◆ m_localCenterA

b2Vec2 b2PulleyJoint::m_localCenterA

protected

Definition at line 148 of file b2_pulley_joint.h.

◆ m_localCenterB

b2Vec2 b2PulleyJoint::m_localCenterB

protected

Definition at line 149 of file b2_pulley_joint.h.

◆ m_mass

float b2PulleyJoint::m_mass

protected

Definition at line 154 of file b2_pulley_joint.h.

◆ m_rA

b2Vec2 b2PulleyJoint::m_rA

protected

Definition at line 146 of file b2_pulley_joint.h.

◆ m_ratio

float b2PulleyJoint::m_ratio

protected

Definition at line 138 of file b2_pulley_joint.h.

◆ m_rB

b2Vec2 b2PulleyJoint::m_rB

protected

Definition at line 147 of file b2_pulley_joint.h.

◆ m_uA

b2Vec2 b2PulleyJoint::m_uA

protected

Definition at line 144 of file b2_pulley_joint.h.

◆ m_uB

b2Vec2 b2PulleyJoint::m_uB

protected

Definition at line 145 of file b2_pulley_joint.h.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ b2PulleyJoint()

Member Function Documentation

◆ Dump()

◆ GetAnchorA()

◆ GetAnchorB()

◆ GetCurrentLengthA()

◆ GetCurrentLengthB()

◆ GetGroundAnchorA()

◆ GetGroundAnchorB()

◆ GetLengthA()

◆ GetLengthB()

◆ GetRatio()

◆ GetReactionForce()

◆ GetReactionTorque()

◆ InitVelocityConstraints()

◆ ShiftOrigin()

◆ SolvePositionConstraints()

◆ SolveVelocityConstraints()

Friends And Related Function Documentation

◆ b2Joint

Member Data Documentation

◆ m_constant

◆ m_groundAnchorA

◆ m_groundAnchorB

◆ m_impulse

◆ m_indexA

◆ m_indexB

◆ m_invIA

◆ m_invIB

◆ m_invMassA

◆ m_invMassB

◆ m_lengthA

◆ m_lengthB

◆ m_localAnchorA

◆ m_localAnchorB

◆ m_localCenterA

◆ m_localCenterB

◆ m_mass

◆ m_rA

◆ m_ratio

◆ m_rB

◆ m_uA

◆ m_uB