import { Quaternion, Vector4 } from '../../../runtime';
import { Point } from '../Point';
/**
 * 判断2个变量（数字、数组、二维向量、三维向量、四维向量、四元数）的值是否近似相等
 * @param a 变量a
 * @param b 变量b
 * @param epsilon 精度，默认值0.0001
 */
export declare function withinEpsilon<T = number | number[] | Point | Vector4 | Quaternion>(a: T, b: T, epsilon?: number): boolean;