trait RigidCylinderPart:
    .doc: """
    A trait for upgrading a rigid body to
    one of the two parts of a Linear Cylinder Actuator.
    """
    connector is Physics3D.Interactions.MateConnector:
        main_axis: Math.Vec3.Y_AXIS()
        normal: Math.Vec3.X_AXIS()
    internal_connector is Physics3D.Interactions.MateConnector:
        main_axis: Math.Vec3.Z_AXIS()
        normal: Math.Vec3.X_AXIS()
    length is Real
    diameter is Real
