kop-5

import turtle

screen = turtle
screen.title('T-square Fractal - PythonTurtle.Academy')
screen.setup(1000, 1000)
screen.setworldcoordinates(-1000, -1000, 1000, 1000)
screen.tracer(0, 0)
turtle.speed(0)
screen.bgcolor('white')
turtle.hideturtle()
turtle.pencolor('white')


def stacksquares(x, y, length, n):
    if n == 0: return
    stacksquares(x - length / 2, y - length / 2, length / 2, n - 1)
    stacksquares(x + length / 2, y + length / 2, length / 2, n - 1)
    stacksquares(x - length / 2, y + length / 2, length / 2, n - 1)
    stacksquares(x + length / 2, y - length / 2, length / 2, n - 1)

    turtle.up()
    turtle.goto(x - length / 2, y - length / 2)
    turtle.down()
    turtle.seth(0)
    turtle.begin_fill()
    for _ in range(4):
        turtle.fd(length)
        turtle.left(90)
    turtle.end_fill()


turtle.up()
turtle.goto(-800, -800)
turtle.begin_fill()
turtle.fillcolor('black')
for _ in range(4):
    turtle.fd(1600)
    turtle.left(90)
turtle.end_fill()
turtle.fillcolor('white')
stacksquares(0, 0, 800, 7)
screen.update()
screen.exitonclick()
# import turtle
#
#
# def fractal(level, tob, turn_direction=2):
#     global length
#     if level == 1:
#         tob.forward(length)
#         tob.left(90)
#         tob.forward(length)
#         tob.left(90)
#         tob.forward(length)
#         tob.left(90)
#         tob.forward(length)
#         return
#     else:
#         tob.forward(length)
#         length /= 2
#         fractal(level - 1, tob)
#         length *= 2
#         if turn_direction == 0:
#             tob.forward(length)
#             return
#         fractal(level, tob, turn_direction=turn_direction - 1)
#
#
# length = 100
# wn = turtle.Screen()
# wn.bgcolor("light green")
# wn.title("Turtle")
# tur_ob = turtle.Turtle()
#
# fractal(4, tur_ob)