# Sort the vertices in clockwise order
	#
	# ~~~
	# var p1 = new Point[Float](0.0, 0.0)
	# var p2 = new Point[Float](5.0, 0.0)
	# var p3 = new Point[Float](0.0, 5.0)
	# var p4 = new Point[Float](5.0, 5.0)
	# var arr = new Array[Point[Float]].with_items(p1, p2, p3, p4)
	# var poly = new ConvexPolygon(arr)
	# poly.sort_cw
	# assert poly.points == [p3, p1, p2, p4]
	# ~~~
	fun sort_cw do
		var sorter = new ClockWiseSort.with_center(vertices)
		sorter.sort(points)
	end