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2019.06.13(am): How to draw fractal with python turtle

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by

Seongju Hong
in , , 
import turtle
import math
koch_size=400
koch_step=int(turtle.numinput('Koch Smowflack','How many levels would you like to draw the curve of snowflake?'))

turtle.bgcolor('black')
turtle.color('sky blue', 'white')
turtle.hideturtle()

def koch_line(length, step):
    if step > 0:
        length = length/3
        for angle in [60, -120, 60, 0]:
            koch_line(length, step-1)
            turtle.left(angle)
    else:
        turtle.forward(length)
        
    turtle.penup()
    turtle.backward(koch_size/math.sqrt(3))
    turtle.left(30)
    turtle.pendown()

turtle.tracer(100)
    
turtle.begin_fill()
for i in range(3):
    koch_line(koch_size, koch_step)
    turtle.left(-120)
turtle.end_fill()

turtle.update()
turtle.done()
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Comments

7 responses to “2019.06.13(am): How to draw fractal with python turtle”

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