import type { Matrix4 } from "./Matrix4.ts";
import { Vector3 } from "./Vector3.ts";
/** Infinite plane defined by a unit normal and signed distance. */
export declare class Plane {
    #private;
    constructor(normal?: Vector3, constant?: number);
    get normal(): Vector3;
    set normal(value: Vector3);
    get constant(): number;
    set constant(value: number);
    applyMatrix4(m: Matrix4): Plane;
    coplanarPoint(target?: Vector3): Vector3;
    clone(): Plane;
    copy(plane: Plane): Plane;
    distanceToPoint(point: {
        x: number;
        y: number;
        z: number;
    }): number;
    equals(plane: Plane): boolean;
    intersectLine(line: {
        start: Vector3;
        end: Vector3;
    }, target?: Vector3): Vector3 | undefined;
    intersectsSphere(sphere: {
        centre: Vector3;
        radius: number;
    }): boolean;
    projectPoint(point: Vector3, target?: Vector3): Vector3;
    setComponents(x: number, y: number, z: number, w: number): Plane;
    setFromCoplanarPoints(a: Vector3, b: Vector3, c: Vector3): Plane;
    setFromNormalAndCoplanarPoint(normal: Vector3, point: Vector3): Plane;
    translate(offset: Vector3): Plane;
    normalize(): Plane;
}
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