Box2D  2.3.0
A 2D Physics Engine for Games
Public Member Functions | Protected Member Functions | Protected Attributes | Friends | List of all members
b2FrictionJoint Class Reference

#include <b2FrictionJoint.h>

Inheritance diagram for b2FrictionJoint:
b2Joint

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.
 
- Public Member Functions inherited from b2Joint
b2JointType GetType () const
 Get the type of the concrete joint.
 
b2BodyGetBodyA ()
 Get the first body attached to this joint.
 
b2BodyGetBodyB ()
 Get the second body attached to this joint.
 
b2JointGetNext ()
 Get the next joint the world joint list.
 
const b2JointGetNext () const
 
void * GetUserData () const
 Get the user data pointer.
 
void SetUserData (void *data)
 Set the user data pointer.
 
bool IsActive () const
 Short-cut function to determine if either body is inactive.
 
bool GetCollideConnected () const
 
virtual void ShiftOrigin (const b2Vec2 &newOrigin)
 Shift the origin for any points stored in world coordinates.
 

Protected Member Functions

 b2FrictionJoint (const b2FrictionJointDef *def)
 
void InitVelocityConstraints (const b2SolverData &data)
 
void SolveVelocityConstraints (const b2SolverData &data)
 
bool SolvePositionConstraints (const b2SolverData &data)
 
- Protected Member Functions inherited from b2Joint
 b2Joint (const b2JointDef *def)
 

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
 
- Protected Attributes inherited from b2Joint
b2JointType m_type
 
b2Jointm_prev
 
b2Jointm_next
 
b2JointEdge m_edgeA
 
b2JointEdge m_edgeB
 
b2Bodym_bodyA
 
b2Bodym_bodyB
 
int32 m_index
 
bool m_islandFlag
 
bool m_collideConnected
 
void * m_userData
 

Friends

class b2Joint
 

Additional Inherited Members

- Static Protected Member Functions inherited from b2Joint
static b2JointCreate (const b2JointDef *def, b2BlockAllocator *allocator)
 
static void Destroy (b2Joint *joint, b2BlockAllocator *allocator)
 

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: