import * as THREE from 'three';
import { Vector3, Line3 } from "three";
export declare class PlaneExt extends THREE.Plane {
    constructor(normal?: THREE.Vector3, constant?: number);
    intersectLine(line: Line3, optionalTarget?: Vector3, extendLine?: boolean): Vector3;
    intersectRay(ray: THREE.Ray, optionalTarget?: Vector3, extendLine?: boolean): Vector3;
}