import { ActionBehavior, ContextManager, ActionBehaviorConstructorProps, Component, Observable } from '@zcomponent/core';
/**
 * Continuously applies a force to a physics body at a given location.
 *
 * If the location is not specified, the force will be applied at the world position of the rigidbody.
 * @zicon outbound
 * @zbehavior
 * @zgroup Physics Actions
 */
export declare class ApplyForce extends ActionBehavior {
    protected zcomponent: import("@zcomponent/core").ZComponent<any>;
    /**
     * The rigidbody target.
     * @zprop
     * @zvalues behaviorids three/Object3D/Physics/RigidBody
     */
    rigidbody: string;
    /**
     * The force vector to apply.
     * @zprop
     * @zgroup Physics
     * @zgrouppriority 20
     * @zdefault [0, 0, 1000]
     */
    force: Observable<never, [number, number, number]>;
    /**
     * The location in world space to apply the force.
     *
     * If unspecified, the force will be applied at the world position of the rigidbody.
     * @zprop
     * @zgroup Physics
     * @zgrouppriority 20
     * @zdefault [0, 0, 0]
     */
    location: Observable<[number, number, number] | undefined, never>;
    constructor(contextManager: ContextManager, instance: Component, props: ActionBehaviorConstructorProps);
    /** @zprop */
    perform: () => void;
    private _frame;
    /** @zui */
    preview(): void;
    dispose: () => never;
}