org.jbox2d.dynamics.joints
Class GearJointDef
java.lang.Object
org.jbox2d.dynamics.joints.JointDef
org.jbox2d.dynamics.joints.GearJointDef
public class GearJointDef
- extends JointDef
Gear joint definition. This definition requires two existing
revolute or prismatic joints (any combination will work).
The provided joints must attach a dynamic body to a static body.
A gear joint is used to connect two joints together. Either joint
can be a revolute or prismatic joint. You specify a gear ratio
to bind the motions together:
coordinate1 + ratio * coordinate2 = constant
The ratio can be negative or positive. If one joint is a revolute joint
and the other joint is a prismatic joint, then the ratio will have units
of length or units of 1/length.
Warning: The revolute and prismatic joints must be attached to
fixed bodies (which must be body1 on those joints).
Field Summary |
Joint |
joint1
The first revolute/prismatic joint attached to the gear joint. |
Joint |
joint2
The second revolute/prismatic joint attached to the gear joint. |
float |
ratio
The gear ratio. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
joint1
public Joint joint1
- The first revolute/prismatic joint attached to the gear joint.
joint2
public Joint joint2
- The second revolute/prismatic joint attached to the gear joint.
ratio
public float ratio
- The gear ratio.
- See Also:
for explanation.
GearJointDef
public GearJointDef()