import type { BBox } from './types';
export declare function distance(x1: number, y1: number, x2: number, y2: number): number;
export declare function getBBoxByArray(xArr: number[], yArr: number[]): BBox;
export declare function getBBoxRange(x1: number, y1: number, x2: number, y2: number): {
    minX: number;
    maxX: number;
    minY: number;
    maxY: number;
};
export declare function piMod(angle: number): number;