// Last module patch version validated against: 3.0.1 /** * Returns the signed area of the specified polygon. If the vertices of the polygon are in counterclockwise order * (assuming a coordinate system where the origin <0,0> is in the top-left corner), the returned area is positive; * otherwise it is negative, or zero. * * @param polygon Array of coordinates , and so on. */ export function polygonArea(polygon: Array<[number, number]>): number; /** * Returns the centroid of the specified polygon. * * @param polygon Array of coordinates , and so on. */ export function polygonCentroid(polygon: Array<[number, number]>): [number, number]; /** * Returns the convex hull of the specified points using Andrewâ€™s monotone chain algorithm. * The returned hull is represented as an array containing a subset of the input points arranged in * counterclockwise order. Returns null if points has fewer than three elements. * * @param points Array of coordinates , and so on. */ export function polygonHull(points: Array<[number, number]>): Array<[number, number]> | null; /** * Returns true if and only if the specified point is inside the specified polygon. * * @param polygon Array of coordinates , and so on. * @param point Coordinates of point . */ export function polygonContains(polygon: Array<[number, number]>, point: [number, number]): boolean; /** * Returns the length of the perimeter of the specified polygon. * * @param polygon Array of coordinates , and so on. */ export function polygonLength(polygon: Array<[number, number]>): number;