def drawWire(canvas, points):
    """
    Draw the edges between the provided points.
    No labels.
    An edge is implied between consecutive vertices.
    No fill.
    """
    size = len(points)
    print(size)
    print
    for i in range(size):
        print(i, (i + 1) % size)
        p0 = points[i]
        p1 = points[(i + 1) % size]
        x0 = p0[0]
        y0 = p0[1]
        x1 = p1[0]
        y1 = p1[1]
        canvas.line([(x0, y0), (x1, y1)])
