Box2D  2.2.1
Box2D API Reference for Kobold2D developers
b2WeldJoint Class Reference

#include <b2WeldJoint.h>

+ Inheritance diagram for b2WeldJoint:
+ Collaboration diagram for b2WeldJoint:

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.
float32 GetReferenceAngle () const
 Get the reference angle.
void SetFrequency (float32 hz)
 Set/get frequency in Hz.
float32 GetFrequency () const
void SetDampingRatio (float32 ratio)
 Set/get damping ratio.
float32 GetDampingRatio () const
void Dump ()
 Dump to b2Log.

Protected Member Functions

 b2WeldJoint (const b2WeldJointDef *def)
void InitVelocityConstraints (const b2SolverData &data)
void SolveVelocityConstraints (const b2SolverData &data)
bool SolvePositionConstraints (const b2SolverData &data)

Protected Attributes

float32 m_frequencyHz
float32 m_dampingRatio
float32 m_bias
b2Vec2 m_localAnchorA
b2Vec2 m_localAnchorB
float32 m_referenceAngle
float32 m_gamma
b2Vec3 m_impulse
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
b2Mat33 m_mass

Friends

class b2Joint

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

void b2WeldJoint::Dump ( ) [virtual]

Dump to b2Log.

Reimplemented from b2Joint.

b2Vec2 b2WeldJoint::GetAnchorA ( ) const [virtual]

Get the anchor point on bodyA in world coordinates.

Implements b2Joint.

b2Vec2 b2WeldJoint::GetAnchorB ( ) const [virtual]

Get the anchor point on bodyB in world coordinates.

Implements b2Joint.

const b2Vec2& b2WeldJoint::GetLocalAnchorA ( ) const [inline]

The local anchor point relative to bodyA's origin.

const b2Vec2& b2WeldJoint::GetLocalAnchorB ( ) const [inline]

The local anchor point relative to bodyB's origin.

b2Vec2 b2WeldJoint::GetReactionForce ( float32  inv_dt) const [virtual]

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

Implements b2Joint.

float32 b2WeldJoint::GetReactionTorque ( float32  inv_dt) const [virtual]

Get the reaction torque on bodyB in N*m.

Implements b2Joint.

float32 b2WeldJoint::GetReferenceAngle ( ) const [inline]

Get the reference angle.

void b2WeldJoint::SetDampingRatio ( float32  ratio) [inline]

Set/get damping ratio.

void b2WeldJoint::SetFrequency ( float32  hz) [inline]

Set/get frequency in Hz.


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