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

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

public class WheelJointDef
extends JointDef

Wheel joint definition. This requires defining a line of motion using an axis and an anchor point. The definition uses local anchor points and a local axis so that the initial configuration can violate the constraint slightly. The joint translation is zero when the local anchor points coincide in world space. Using local anchors and a local axis 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 Suspension damping ratio, one indicates critical damping
boolean	enableMotor Enable/disable the joint motor.
float	frequencyHz Suspension frequency, zero indicates no suspension
Vector2	localAnchorA The local anchor point relative to body1's origin.
Vector2	localAnchorB The local anchor point relative to body2's origin.
Vector2	localAxisA The local translation axis in body1.
float	maxMotorTorque The maximum motor torque, usually in N-m.
float	motorSpeed The desired motor speed in radians per second.

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

bodyA, bodyB, collideConnected, type

Constructor Summary

WheelJointDef()

Method Summary

void	initialize(Body bodyA, Body bodyB, Vector2 anchor, Vector2 axis)

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.

localAxisA

public final Vector2 localAxisA

The local translation axis in body1.

enableMotor

public boolean enableMotor

Enable/disable the joint motor.

maxMotorTorque

public float maxMotorTorque

The maximum motor torque, usually in N-m.

motorSpeed

public float motorSpeed

The desired motor speed in radians per second.

frequencyHz

public float frequencyHz

Suspension frequency, zero indicates no suspension

dampingRatio

public float dampingRatio

Suspension damping ratio, one indicates critical damping

Constructor Detail

WheelJointDef

public WheelJointDef()

Method Detail

initialize

public void initialize(Body bodyA,
                       Body bodyB,
                       Vector2 anchor,
                       Vector2 axis)