Python Turtle Graphic Design #9

 Python Turtle Graphic Design #9

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Source code:

import turtle as t

import colorsys as cs

from math import sin,cos,radians

t.setup(640,640)

t.bgcolor('black')

t.tracer(5)

t.pensize(1)

t.up()

k=6

r=1

i=0

while True:

    t.color(cs.hls_to_rgb(r/25,0.5,1))

    R = k*r

    a =radians(i)

    x = R*cos(a)+r*cos(R*a)

    y = R*sin(a)-r*sin(R*a)

    t.goto(x,y)

    t.down()

    i+=1

    r+=0.005

    if r>50:

        break

t.done()