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# npm

## @types/d3-polygon 3.0.0 • Public • Published

# Installation

`npm install --save @types/d3-polygon`

# Summary

This package contains type definitions for D3JS d3-polygon module (https://github.com/d3/d3-polygon/).

# Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/d3-polygon.

## index.d.ts

```// Type definitions for D3JS d3-polygon module 3.0
// Project: https://github.com/d3/d3-polygon/, https://d3js.org/d3-polygon
// Definitions by: Tom Wanzek <https://github.com/tomwanzek>
//                 Alex Ford <https://github.com/gustavderdrache>
//                 Boris Yankov <https://github.com/borisyankov>
//                 Nathan Bierema <https://github.com/Methuselah96>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

// 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 <x0, y0>, <x1, y1> and so on.
*/
export function polygonArea(polygon: Array<[number, number]>): number;

/**
* Returns the centroid of the specified polygon.
*
* @param polygon Array of coordinates <x0, y0>, <x1, y1> and so on.
*/
export function polygonCentroid(polygon: Array<[number, number]>): [number, number];

/**
* Returns the convex hull of the specified points using Andrew’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 <x0, y0>, <x1, y1> 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 <x0, y0>, <x1, y1> and so on.
* @param point Coordinates of point <x, y>.
*/
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 <x0, y0>, <x1, y1> and so on.
*/
export function polygonLength(polygon: Array<[number, number]>): number;```

• Last updated: Fri, 25 Jun 2021 14:01:31 GMT
• Dependencies: none
• Global values: none

# Credits

These definitions were written by Tom Wanzek, Alex Ford, Boris Yankov, and Nathan Bierema.

## Keywords

none

### Install

`npm i @types/d3-polygon`

### Repository

github.com/DefinitelyTyped/DefinitelyTyped

466,428

3.0.0