PythonExtra/ports/sh/examples/ex_turtle.py

24 lines
473 B
Python

import turtle
from math import exp
def try_colormode(m):
try: turtle.colormode(m)
except: pass
def try_pencolor(c):
try: turtle.pencolor(c)
except: pass
try: turtle.color(c)
except: pass
try_colormode(1)
turtle.penup()
turtle.goto(0, -20)
turtle.pendown()
for i in range(1,37):
red=(exp(-0.5 * ((i-6)/12)**2))
green=(exp(-0.5 * ((i-18)/12)**2))
blue=(exp(-0.5 * ((i-30)/12)**2))
try_pencolor([red,green,blue])
turtle.circle(50-i)
turtle.right(10)