import { Object3D } from "three";
import { Behaviour } from "./Component.js";
/**
 * A LookAtConstraint is used by OrbitControls to make the camera look at a target.
 */
export declare class LookAtConstraint extends Behaviour {
    /**
     * When true the constraint is active.
     */
    constraintActive: boolean;
    /**
     * When true the look at is locked to the position of the assigned sources.
     */
    locked: boolean;
    /**
     * The sources to look at.
     */
    sources: Object3D[];
}