import { NumberContainer } from '../basic';
import { Steppable } from '../loopables';
/**
 * (To be filled)
 */
export declare class AngleQuantity implements Steppable {
    /**
     * Null object of AngleQuantity.
     * @static
     */
    static readonly NULL: AngleQuantity;
    /**
     * Reference to the angle.
     */
    angleReference: NumberContainer;
    /**
     * Reference to the anglular velocity.
     */
    angleVelocityReference: NumberContainer;
    /**
     *
     * @param angle
     * @param angleVelocity
     */
    constructor(angle?: number, angleVelocity?: number);
    /**
     * Current angle value.
     */
    angle: number;
    /**
     * Current anglular velocity value.
     */
    angleVelocity: number;
    /**
     * Updates the angle.
     */
    step(): void;
}
export declare class NullAngleQuantity extends AngleQuantity {
    angle: number;
    angleVelocity: number;
    step(): void;
}