Package org.jbox2d.dynamics.joints

Class WeldJoint

java.lang.Object

org.jbox2d.dynamics.joints.Joint

org.jbox2d.dynamics.joints.WeldJoint

public class WeldJoint
extends Joint

A weld joint essentially glues two bodies together. A weld joint may distort somewhat because the island constraint solver is approximate.

Author:

Daniel Murphy

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp

Field Summary

Fields inherited from class org.jbox2d.dynamics.joints.Joint

bodyA, bodyB, edgeA, edgeB, islandFlag, next, pool, prev, userData

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	WeldJoint(WorldPool argWorld, WeldJointDef def)

Method Summary

Modifier and Type	Method	Description
void	getAnchorA(Vec2 argOut)	Get the anchor point on bodyA in world coordinates.
void	getAnchorB(Vec2 argOut)	Get the anchor point on bodyB in world coordinates.
float	getDampingRatio()
float	getFrequency()
Vec2	getLocalAnchorA()
Vec2	getLocalAnchorB()
void	getReactionForce(float invDt, Vec2 argOut)	Get the reaction force on body2 at the joint anchor in Newtons.
float	getReactionTorque(float invDt)	Get the reaction torque on body2 in N*m.
float	getReferenceAngle()
void	initVelocityConstraints(SolverData data)	Internal
void	setDampingRatio(float dampingRatio)
void	setFrequency(float frequencyHz)
boolean	solvePositionConstraints(SolverData data)	This returns true if the position errors are within tolerance.
void	solveVelocityConstraints(SolverData data)	Internal

Methods inherited from class org.jbox2d.dynamics.joints.Joint

create, destroy, destructor, getBodyA, getBodyB, getCollideConnected, getNext, getType, getUserData, isActive, setUserData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

WeldJoint

protected WeldJoint(WorldPool argWorld,
 WeldJointDef def)

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 41 - 60

Method Details

getReferenceAngle

public float getReferenceAngle()

getLocalAnchorA

public Vec2 getLocalAnchorA()

getLocalAnchorB

public Vec2 getLocalAnchorB()

getFrequency

public float getFrequency()

setFrequency

public void setFrequency(float frequencyHz)

getDampingRatio

public float getDampingRatio()

setDampingRatio

public void setDampingRatio(float dampingRatio)

getAnchorA

public void getAnchorA(Vec2 argOut)

Description copied from class: Joint

Get the anchor point on bodyA in world coordinates.

Specified by:

getAnchorA in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 308 - 311

getAnchorB

public void getAnchorB(Vec2 argOut)

Description copied from class: Joint

Get the anchor point on bodyB in world coordinates.

Specified by:

getAnchorB in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 313 - 316

getReactionForce

public void getReactionForce(float invDt,
 Vec2 argOut)

Description copied from class: Joint

Get the reaction force on body2 at the joint anchor in Newtons.

Specified by:

getReactionForce in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 318 - 322

getReactionTorque

public float getReactionTorque(float invDt)

Description copied from class: Joint

Get the reaction torque on body2 in N*m.

Specified by:

getReactionTorque in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 324 - 327

initVelocityConstraints

public void initVelocityConstraints(SolverData data)

Description copied from class: Joint

Internal

Specified by:

initVelocityConstraints in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 62 - 167

solveVelocityConstraints

public void solveVelocityConstraints(SolverData data)

Description copied from class: Joint

Internal

Specified by:

solveVelocityConstraints in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 169 - 225

solvePositionConstraints

public boolean solvePositionConstraints(SolverData data)

Description copied from class: Joint

This returns true if the position errors are within tolerance. Internal.

Specified by:

solvePositionConstraints in class Joint

Repolink:

Github: erincatto/box2d src/dynamics/b2_weld_joint.cpp Lines 227 - 306