code: function () {
      // Grab the items
      var items = this.items;
  
      // Find the most negative x and y
      var minX = Infinity,
          minY = Infinity;
      items.forEach(function (item) {
        var coords = item;
        minX = Math.min(minX, coords.x);
        minY = Math.min(minY, coords.y);
      });
  
      // Offset each item by -minX, -minY; effectively resetting to 0, 0
      items.forEach(function (item) {
        var coords = item;
        coords.x -= minX;
        coords.y -= minY;
      });
    }
docs: Method to normalize coordinates to 0, 0 This is bad to do mid-addition since it messes up the algorithm