export interface IRectangle<P> {
    add(point: P): void;
    add_rect(rectangle: IRectangle<P>): IRectangle<P>;
    contains_point(point: P): boolean;
    contains_rect(rect: IRectangle<P>): boolean;
    intersection_rect(rectangle: IRectangle<P>): IRectangle<P>;
    intersects_rect(rectangle: IRectangle<P>): boolean;
    area: number;
    contains_point_radius(p: P, radius: number): boolean;
}