Planck.js

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Interface: RevoluteJointDef ​

Revolute joint definition. This requires defining an anchor point where the bodies are joined. The definition uses local anchor points so that the initial configuration can violate the constraint slightly. You also need to specify the initial relative angle for joint limits. This helps when saving and loading a game.

The local anchor points are measured from the body's origin rather than the center of mass because: 1. you might not know where the center of mass will be. 2. if you add/remove shapes from a body and recompute the mass, the joints will be broken.

Extends ​

Properties ​

bodyA ​

bodyA: Body

The first attached body.

Inherited from ​

JointDef.bodyA

bodyB ​

bodyB: Body

The second attached body.

Inherited from ​

JointDef.bodyB

collideConnected? ​

optional collideConnected: boolean

Set this flag to true if the attached bodies should collide.

Inherited from ​

JointDef.collideConnected

enableLimit? ​

optional enableLimit: boolean

A flag to enable joint limits.

Inherited from ​

RevoluteJointOpt.enableLimit

enableMotor? ​

optional enableMotor: boolean

A flag to enable the joint motor.

Inherited from ​

RevoluteJointOpt.enableMotor

localAnchorA ​

localAnchorA: Vec2Value

The local anchor point relative to bodyA's origin.

localAnchorB ​

localAnchorB: Vec2Value

The local anchor point relative to bodyB's origin.

lowerAngle? ​

optional lowerAngle: number

The lower angle for the joint limit (radians).

Inherited from ​

RevoluteJointOpt.lowerAngle

maxMotorTorque? ​

optional maxMotorTorque: number

The maximum motor torque used to achieve the desired motor speed. Usually in N-m.

Inherited from ​

RevoluteJointOpt.maxMotorTorque

motorSpeed? ​

optional motorSpeed: number

The desired motor speed. Usually in radians per second.

Inherited from ​

RevoluteJointOpt.motorSpeed

referenceAngle? ​

optional referenceAngle: number

The bodyB angle minus bodyA angle in the reference state (radians).

style? ​

optional style: Style

Styling for dev-tools.

Inherited from ​

JointDef.style

upperAngle? ​

optional upperAngle: number

The upper angle for the joint limit (radians).

Inherited from ​

RevoluteJointOpt.upperAngle

userData? ​

optional userData: any

Use this to attach application specific data to your joints.

Inherited from ​

JointDef.userData