turf-isClockwise

Takes a ring and return true or false whether or not the ring is clockwise or counter-clockwise.

Install

npm install turf-is-clockwise

Parameters

name	description
ring	an array of coordinates

Usage

isClockwise(ring)

Example

var isClockwise = require('turf-is-clockwise')
 
var clockwiseRing = [[0,0],[1,1],[1,0],[0,0]]
var counterClockwiseRing = [[0,0],[1,0],[1,1],[0,0]]
 
var isCW = isClockwise(clockwiseRing)
var counterCW = isClockwise(counterClockwiseRing)
 
console.log(isCW) // true
console.log(counterCW) // false