Takes a polygon and return true or false as to whether it is concave or not.
npm install @turf/boolean-concaveTakes a polygon and return true or false as to whether it is concave or not.
* polygon [Feature][1]<[Polygon][2]> to be evaluated
``javascript
var convexPolygon = turf.polygon([[[0,0],[0,1],[1,1],[1,0],[0,0]]]);
turf.booleanConcave(convexPolygon)
//=false
`
Returns [boolean][3] true/false
[1]: https://tools.ietf.org/html/rfc7946#section-3.2
[2]: https://tools.ietf.org/html/rfc7946#section-3.1.6
[3]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean
---
This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.
Install this single module individually:
`sh`
$ npm install @turf/boolean-concave
Or install the all-encompassing @turf/turf module that includes all modules as functions:
`sh``
$ npm install @turf/turf