import { Point } from '@plait/core';
export declare function getPointOnPolyline(points: Point[], ratio: number): number[];
export declare function calculatePolylineLength(points: Point[]): number;
export declare function getRatioByPoint(points: Point[], point: Point): number;
export declare const removeDuplicatePoints: (points: Point[]) => Point[];
export declare function simplifyOrthogonalPoints(points: Point[]): Point[];
export declare const getExtendPoint: (source: Point, target: Point, extendDistance: number) => Point;