Package org.jbox2d.dynamics.joints

Class ConstantVolumeJoint

java.lang.Object

org.jbox2d.dynamics.joints.Joint

org.jbox2d.dynamics.joints.ConstantVolumeJoint

public class ConstantVolumeJoint
extends Joint

Field Summary

Fields

Modifier and Type	Field	Description
private Body[]	bodies
private DistanceJoint[]	distanceJoints
private float	m_impulse
private Vec2[]	normals
private float[]	targetLengths
private float	targetVolume
private World	world

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

m_bodyA, m_bodyB, m_edgeA, m_edgeB, m_islandFlag, m_next, m_prev, m_userData, pool

Constructor Summary

Constructors

Constructor	Description
ConstantVolumeJoint(World argWorld, ConstantVolumeJointDef def)

Method Summary

Modifier and Type	Method	Description
private boolean	constrainEdges(Position[] positions)
void	destructor()	Override to handle destruction of joint
void	getAnchorA(Vec2 argOut)	No-op
void	getAnchorB(Vec2 argOut)	No-op
Body[]	getBodies()
private float	getBodyArea()
DistanceJoint[]	getJoints()
void	getReactionForce(float inv_dt, Vec2 argOut)	No-op
float	getReactionTorque(float inv_dt)	No-op
private float	getSolverArea(Position[] positions)
void	inflate(float factor)
void	initVelocityConstraints(SolverData step)
boolean	solvePositionConstraints(SolverData step)	This returns true if the position errors are within tolerance.
void	solveVelocityConstraints(SolverData step)

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

create, destroy, 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

Field Detail

bodies

private final Body[] bodies

targetLengths

private float[] targetLengths

targetVolume

private float targetVolume

normals

private Vec2[] normals

m_impulse

private float m_impulse

world

private World world

distanceJoints

private DistanceJoint[] distanceJoints

Constructor Detail

ConstantVolumeJoint

public ConstantVolumeJoint(World argWorld,
                           ConstantVolumeJointDef def)

Method Detail

getBodies

public Body[] getBodies()

getJoints

public DistanceJoint[] getJoints()

inflate

public void inflate(float factor)

destructor

public void destructor()

Description copied from class: Joint

Override to handle destruction of joint

Overrides:

destructor in class Joint

getBodyArea

private float getBodyArea()

getSolverArea

private float getSolverArea(Position[] positions)

constrainEdges

private boolean constrainEdges(Position[] positions)

initVelocityConstraints

public void initVelocityConstraints(SolverData step)

Specified by:

initVelocityConstraints in class Joint

solvePositionConstraints

public boolean solvePositionConstraints(SolverData step)

Description copied from class: Joint

This returns true if the position errors are within tolerance.

Specified by:

solvePositionConstraints in class Joint

Returns:

solveVelocityConstraints

public void solveVelocityConstraints(SolverData step)

Specified by:

solveVelocityConstraints in class Joint

getAnchorA

public void getAnchorA(Vec2 argOut)

No-op

Specified by:

getAnchorA in class Joint

getAnchorB

public void getAnchorB(Vec2 argOut)

No-op

Specified by:

getAnchorB in class Joint

getReactionForce

public void getReactionForce(float inv_dt,
                             Vec2 argOut)

No-op

Specified by:

getReactionForce in class Joint

getReactionTorque

public float getReactionTorque(float inv_dt)

No-op

Specified by:

getReactionTorque in class Joint

Returns: