Box2D  2.2.1
A 2D Physics Engine for Games
Public Member Functions | Protected Member Functions | Protected Attributes | Friends
b2FrictionJoint Class Reference

#include <b2FrictionJoint.h>

Inheritance diagram for b2FrictionJoint:
b2Joint

List of all members.

Public Member Functions

b2Vec2 GetAnchorA () const
 Get the anchor point on bodyA in world coordinates.
b2Vec2 GetAnchorB () const
 Get the anchor point on bodyB in world coordinates.
b2Vec2 GetReactionForce (float32 inv_dt) const
 Get the reaction force on bodyB at the joint anchor in Newtons.
float32 GetReactionTorque (float32 inv_dt) const
 Get the reaction torque on bodyB in N*m.
const b2Vec2GetLocalAnchorA () const
 The local anchor point relative to bodyA's origin.
const b2Vec2GetLocalAnchorB () const
 The local anchor point relative to bodyB's origin.
void SetMaxForce (float32 force)
 Set the maximum friction force in N.
float32 GetMaxForce () const
 Get the maximum friction force in N.
void SetMaxTorque (float32 torque)
 Set the maximum friction torque in N*m.
float32 GetMaxTorque () const
 Get the maximum friction torque in N*m.
void Dump ()
 Dump joint to dmLog.

Protected Member Functions

 b2FrictionJoint (const b2FrictionJointDef *def)
void InitVelocityConstraints (const b2SolverData &data)
void SolveVelocityConstraints (const b2SolverData &data)
bool SolvePositionConstraints (const b2SolverData &data)

Protected Attributes

b2Vec2 m_localAnchorA
b2Vec2 m_localAnchorB
b2Vec2 m_linearImpulse
float32 m_angularImpulse
float32 m_maxForce
float32 m_maxTorque
int32 m_indexA
int32 m_indexB
b2Vec2 m_rA
b2Vec2 m_rB
b2Vec2 m_localCenterA
b2Vec2 m_localCenterB
float32 m_invMassA
float32 m_invMassB
float32 m_invIA
float32 m_invIB
b2Mat22 m_linearMass
float32 m_angularMass

Friends

class b2Joint

Detailed Description

Friction joint. This is used for top-down friction. It provides 2D translational friction and angular friction.


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