/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */
import { Color, Vector3 } from 'three';
export declare class Face3 {
    a: number;
    b: number;
    c: number;
    normal?: Vector3 | undefined;
    color?: Color | undefined;
    materialIndex?: number | undefined;
    constructor(a: number, b: number, c: number, normal?: Vector3 | undefined, color?: Color | undefined, materialIndex?: number | undefined);
}