com.badlogic.gdx.physics.box2d.joints
Class DistanceJointDef

java.lang.Object
  com.badlogic.gdx.physics.box2d.JointDef
      com.badlogic.gdx.physics.box2d.joints.DistanceJointDef

public class DistanceJointDef
extends JointDef

Distance joint definition. This requires defining an anchor point on both bodies and the non-zero length of the distance joint. The definition uses local anchor points so that the initial configuration can violate the constraint slightly. This helps when saving and loading a game.

Nested Class Summary

Nested classes/interfaces inherited from class com.badlogic.gdx.physics.box2d.JointDef

JointDef.JointType

Field Summary

float	dampingRatio The damping ratio.
float	frequencyHz The mass-spring-damper frequency in Hertz.
float	length The natural length between the anchor points.
Vector2	localAnchorA The local anchor point relative to body1's origin.
Vector2	localAnchorB The local anchor point relative to body2's origin.

Fields inherited from class com.badlogic.gdx.physics.box2d.JointDef

bodyA, bodyB, collideConnected, type

Constructor Summary

DistanceJointDef()

Method Summary

void	initialize(Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB) Initialize the bodies, anchors, and length using the world anchors.

Methods inherited from class java.lang.Object

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

Field Detail

localAnchorA

public final Vector2 localAnchorA

The local anchor point relative to body1's origin.

localAnchorB

public final Vector2 localAnchorB

The local anchor point relative to body2's origin.

length

public float length

The natural length between the anchor points.

frequencyHz

public float frequencyHz

The mass-spring-damper frequency in Hertz.

dampingRatio

public float dampingRatio

The damping ratio. 0 = no damping, 1 = critical damping.

Constructor Detail

DistanceJointDef

public DistanceJointDef()

Method Detail

initialize

public void initialize(Body bodyA,
                       Body bodyB,
                       Vector2 anchorA,
                       Vector2 anchorB)

Initialize the bodies, anchors, and length using the world anchors.