export declare class Vector2d {
    x: number;
    y: number;
    static add(a: Vector2d, b: Vector2d): Vector2d;
    static subtract(a: Vector2d, b: Vector2d): Vector2d;
    static compare(a: Vector2d, b: Vector2d): boolean;
    static floor(a: Vector2d): {
        x: number;
        y: number;
    };
}
export declare class Rect {
    pos: Vector2d;
    size: Vector2d;
    constructor(pos: Vector2d, size: Vector2d);
    hit(v: Vector2d): boolean;
    get left(): number;
    get right(): number;
    get top(): number;
    get bottom(): number;
    static compare(a: Rect, b: Rect): boolean;
}