Hi! I want to import an object layer from Tiled map editor into a physics engine ( p2.js ). My problem is that p2.js uses 0.5,0.5 as anchor points, but tiled uses 0,0 (top-left). How can i recalculate it's position so i can give it the proper coordinated for a different anchor point? Any help is very much appreciated! Edit : This is easy with rectangles, but my problem is with rotated polygons.