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b2MotorJoint Class Reference

#include <b2MotorJoint.h>

Inherits 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.
void SetLinearOffset (const b2Vec2 &linearOffset)
 Set/get the target linear offset, in frame A, in meters.
const b2Vec2GetLinearOffset () const
void SetAngularOffset (float32 angularOffset)
 Set/get the target angular offset, in radians.
float32 GetAngularOffset () const
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 SetCorrectionFactor (float32 factor)
 Set the position correction factor in the range [0,1].
float32 GetCorrectionFactor () const
 Get the position correction factor in the range [0,1].
void Dump ()
 Dump to b2Log.
- 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

 b2MotorJoint (const b2MotorJointDef *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_linearOffset
float32 m_angularOffset
b2Vec2 m_linearImpulse
float32 m_angularImpulse
float32 m_maxForce
float32 m_maxTorque
float32 m_correctionFactor
int32 m_indexA
int32 m_indexB
b2Vec2 m_rA
b2Vec2 m_rB
b2Vec2 m_localCenterA
b2Vec2 m_localCenterB
b2Vec2 m_linearError
float32 m_angularError
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
b2JointEdge m_edgeA
b2JointEdge m_edgeB
int32 m_index
bool m_islandFlag
bool m_collideConnected
void * m_userData


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

A motor joint is used to control the relative motion between two bodies. A typical usage is to control the movement of a dynamic body with respect to the ground.

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