export type Point = {
    x: number;
    y: number;
};
export declare function isPointInPolygon(point: Point, polygon: Point[]): boolean;
export declare function isInsideRect(point: Point, rect: DOMRect, buffer?: number): boolean;
export declare function cross(o: Point, a: Point, b: Point): number;
export declare function convexHull(points: Point[]): Point[];
export declare function getSafeZone(triggerRect: DOMRect, contentRect: DOMRect): Point[];
export declare class SafePolygonTracker {
    private triggerEl;
    private contentEl;
    private onClose;
    private active;
    private lastCheck;
    private moveHandler;
    constructor(options: {
        triggerEl: HTMLElement;
        contentEl: HTMLElement;
        onClose: () => void;
    });
    start(): void;
    stop(): void;
    isActive(): boolean;
}