def draw(cr, width, height):
    cr.scale(width, height)
    cr.set_line_width(0.04)

    x, y = 0.1, 0.5
    x1, y1 = 0.4, 0.9
    x2, y2 = 0.6, 0.1
    x3, y3 = 0.9, 0.5

    cr.move_to(x, y)
    cr.curve_to(x1, y1, x2, y2, x3, y3)

    cr.stroke()

    cr.set_source_rgba(1, 0.2, 0.2, 0.6)
    cr.set_line_width(0.03)
    cr.move_to(x, y)
    cr.line_to(x1, y1)
    cr.move_to(x2, y2)
    cr.line_to(x3, y3)
    cr.stroke()
