'use strict' module.exports = monotoneConvexHull2D var orient = require('robust-orientation')[3] function monotoneConvexHull2D(points) { var n = points.length if(n < 3) { var result = new Array(n) for(var i=0; i 1 && orient( points[lower[m-2]], points[lower[m-1]], p) <= 0) { m -= 1 lower.pop() } lower.push(idx) //Insert into upper list m = upper.length while(m > 1 && orient( points[upper[m-2]], points[upper[m-1]], p) >= 0) { m -= 1 upper.pop() } upper.push(idx) } //Merge lists together var result = new Array(upper.length + lower.length - 2) var ptr = 0 for(var i=0, nl=lower.length; i0; --j) { result[ptr++] = upper[j] } //Return result return result }