Return the centroid for a given convex polygon.
npm install polygon-centroidpolygon-centroid
===
Return the centroid for a given convex polygon.
npm i polygon-centroid --save
centroid(points)
Return the point {x, y} which is the centroid of the given set of points (convex polygon).
js
var centroid = require('polygon-centroid');
var center = centroid(this.polygon.points);
this.polygon.anchor.set(center.x, center.y);
this.polygon.rotation = Math.PI * 0.5;
``