import type { Point, Vector2 } from '../types';
/**
 * @param vec
 * @param s
 */
export declare function scale(vec: Vector2, s: number): Vector2;
export declare function add(vec1: Vector2, vec2: Vector2): Vector2;
export declare function sub(vec1: Vector2, vec2: Vector2): Vector2;
export declare function min(vec1: Vector2, vec2: Vector2): Vector2;
export declare function max(vec1: Vector2, vec2: Vector2): Vector2;
export declare function distance(vec1: Vector2, vec2: Vector2): number;
export declare function normalize(vec: Vector2): Vector2;
/**
 * 将给定向量围绕指定点旋转指定角度
 * @param vec
 * @param origin 旋转中心
 * @param angle 旋转角度，弧度制
 */
export declare function rotate(vec: Vector2, origin: Point, angle: number): number[];
export declare function vertical(vec: Vector2, flag: boolean): Vector2;