Package org.jbox2d.dynamics.joints

Class PulleyJointDef

java.lang.Object

org.jbox2d.dynamics.joints.JointDef

org.jbox2d.dynamics.joints.PulleyJointDef

public class PulleyJointDef
extends JointDef

Pulley joint definition. This requires two ground anchors, two dynamic body anchor points, and a pulley ratio.

Author:

Daniel Murphy

Field Summary

Fields

Modifier and Type	Field	Description
Vec2	groundAnchorA	The first ground anchor in the world coordinates.
Vec2	groundAnchorB	The second ground anchor in the world coordinates.
float	lengthA	The reference length for the segment attached to bodyA.
float	lengthB	The reference length for the segment attached to bodyB.
Vec2	localAnchorA	The local anchor point relative to bodyA's origin.
Vec2	localAnchorB	The local anchor point relative to bodyB's origin.
float	ratio	The pulley ratio, used to simulate a block-and-tackle.

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

bodyA, bodyB, collideConnected, type, userData

Constructor Summary

Constructors

Constructor	Description
PulleyJointDef()

Method Summary

Modifier and Type	Method	Description
void	initialize(Body b1, Body b2, Vec2 ga1, Vec2 ga2, Vec2 anchor1, Vec2 anchor2, float r)	Initialize the bodies, anchors, lengths, max lengths, and ratio using the world anchors.

Methods inherited from class java.lang.Object

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

Field Details

groundAnchorA

public Vec2 groundAnchorA

The first ground anchor in the world coordinates. This point never moves.

groundAnchorB

public Vec2 groundAnchorB

The second ground anchor in the world coordinates. This point never moves.

localAnchorA

public Vec2 localAnchorA

The local anchor point relative to bodyA's origin.

localAnchorB

public Vec2 localAnchorB

The local anchor point relative to bodyB's origin.

lengthA

public float lengthA

The reference length for the segment attached to bodyA.

lengthB

public float lengthB

The reference length for the segment attached to bodyB.

ratio

public float ratio

The pulley ratio, used to simulate a block-and-tackle.

Constructor Details

PulleyJointDef

public PulleyJointDef()

Method Details

initialize

public void initialize(Body b1,
 Body b2,
 Vec2 ga1,
 Vec2 ga2,
 Vec2 anchor1,
 Vec2 anchor2,
 float r)

Initialize the bodies, anchors, lengths, max lengths, and ratio using the world anchors.