'''
Make a sprial pattern by looping (can run in Windows console mode)
'''

# @micro1
# uname -a
# Linux micro1 3.19.8-100.fc20.x86_64 #1 SMP Tue May 12 17:08:50 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
# setenv DISPLAY :0.0

# import graphical capability
from turtle import *

winsize = 500
stepsize = 4
speed = 10

# make a rectangular window of winsize x winsize pixels
setup(winsize,winsize)

# make a turtle to build the graphics
tl = Turtle()
# hide the turtle (cursor)
tl.hideturtle()
tl.speed(speed)           # make a faster speed than default
tl.color('green', 'blue')

# color('blue', 'yellow')
# hideturtle()

def jumpto(x=0,y=0):
    tl.penup()
    tl.goto(x,y)
    tl.pendown()

'''
for i in range(4):	# draw a box
    tl.forward(10)
    tl.left(90)
'''

# goto(winsize//2,winsize//2)
jumpto(0,0)
for i in range(winsize//stepsize-10):	# limit the turtle to increment within the window
  tl.forward(i*stepsize)		# forward i*4 steps (increasingly) in each loop
  tl.right(90)				# right spiral
  # tl.forward(i*stepsize)
  # tl.forward(i+stepsize)		# different line size
  # tl.left(90)				# left spiral

tl.color('orange')
# tl.goto(winsize//2,winsize//2)
jumpto(10,10)
for i in range(winsize//stepsize-10):	# limit the turtle to increment within the 500x500 window
  tl.forward(i*stepsize)		# forward i*4 steps (increasingly) in each loop
  # tl.right(90)			# right spiral
  tl.left(90)				# left spiral

tl.color('red')
jumpto(-10,-10)
for i in range(winsize//stepsize-10):	# limit the turtle to increment within the 500x500 window
  tl.forward(i*stepsize)		# forward i*4 steps (increasingly) in each loop
  # tl.right(90)			# right spiral
  tl.left(80)				# left spiral
  # tl.left(60)
  # tl.left(45)
  # tl.left(30)

tl.color('magenta')
jumpto(-10,10)
for i in range(winsize//stepsize-10):	# limit the turtle to increment within the 500x500 window
  tl.forward(i*stepsize)		# forward i*4 steps (increasingly) in each loop
  # tl.forward(60)
  # tl.right(90)			# right spiral
  tl.left(160)				# left spiral

# FIN