Get a matrice containing the coordinates of the vertices

Property definitions

geometry $ APolygon :: vertices
	# Get a matrice containing the coordinates of the vertices
	private fun vertices: Array[Array[Float]] do
		var vertices = new Array[Array[Float]]
		for i in [0..points.length[ do
			var temp = new Array[Float]
			temp.add(points[i].x)
			temp.add(points[i].y)
			vertices.add(temp)
		end
		return vertices
	end
lib/geometry/polygon.nit:39,2--49,4