import type { Point } from "../../type/Point";
export declare class Vector {
    x: number;
    y: number;
    constructor(a: Point, b?: Point);
    static of(a: Point, b?: Point): Vector;
    getLength(): number;
    getAngle(vector: Vector): number;
    getDirection(vector: Vector): 1 | 0 | -1;
    getScale(vector: Vector): number;
}