polygon-direction

determine if a polygon is clockwise or counter-clockwise

Polygon Direction

Determine if a polygon is clockwise or counter-clockwise

npm install polygon-direction

var polydir = require("point-in-polygon");

Returns true if a polygon is clockwise, false if it it counter-clockwise.

polygon should be an array of 2-item arrays of coordinates.

 
var polydir = require("polygon-direction");
 
console.log(polydir([[5,0],[6,4],[4,5],[1,5],[1,0]]));