Cardioid Animation - Python Turtle Graphics

 Cardioid Animation - Python Turtle Graphics

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Source code:

from turtle import *

from math import sin,cos,radians

import colorsys as cs

setup(500,500)

bgcolor('black')

R = 200

def getpt(n):

    n = (360/N*n)%360

    a=radians(n)

    x = -cos(a)*R

    y = sin(a)*R

    return (x,y)

tracer(0,0)

hideturtle()

F = 1

for N in range(4,300):

    clear()

    up()

    goto(R,0)

    seth(90)

    down()

    color('white')

    circle(R)

    up()

    h=0

    for i in range(N):

        h = i/(N*3)

        color(cs.hsv_to_rgb(h,1,1))

        c = getpt(i)

        d = getpt(i*F)

        goto(c)

        down()

        goto(d)

        up()

    update()

    F = F+1/295

done()