tshirt2018.py

#https://imgur.com/r/Python/YeHqZ
import turtle
import random

def mandala():
  window= turtle.Screen()

  window.bgcolor ("black")

  t = turtle.Turtle()
  t.color("red")
  t.pensize (0.2)
  t.speed (0)

  x=2
  y=1
  z=1

  i=0

  print (y)
  while i < 2200:
    z=(z+1)
    t.forward (10)
    t.right (x)
    x=(z*(x/z)-z)
    while x > 359:
       x=x-360
    print (x, y, i, t.position())
    i += 1

  t.hideturtle()
  t.up()
  t.goto(-100, 250)
  t.write("  __   __   __", font=("Courier", 16, "normal"))
  t.goto(-100, 225)
  t.write(" /  | /    /    /  |", font=("Courier", 16, "normal"))
  t.goto(-100, 200)
  t.write("(___|(    (    (   |", font=("Courier", 16, "normal"))
  t.goto(-100, 175)
  t.write("|   )|   )|   )|   )", font=("Courier", 16, "normal"))
  t.goto(-100, 150)
  t.write("|  / |__/ |__/ |__/", font=("Courier", 16, "normal"))

  turtle.mainloop()


  ###
  # xart ACCU -f Weird
  #  __   __   __
  # /  | /    /    /  |
  #(___|(    (    (   |
  #|   )|   )|   )|   )
  #|  / |__/ |__/ |__/
  ###

def dragon():
#https://trinket.io/python/c06f77c8e6
#   Dragon curve using L-system
#   Authour:Alan Richmond, Python3.codes
#   https://en.wikipedia.org/wiki/L-system

  def X(n):
    if n>0:  L("X+YF+",n)
  def Y(n):
    if n>0:  L("-FX-Y",n)
      
  def L(s,n):
    for c in s:
      if   c=='-': turtle.lt(90)
      elif c=='+': turtle.rt(90)
      elif c=='X': X(n-1)
      elif c=='Y': Y(n-1)
      elif c=='F': turtle.fd(12)
      print turtle.position()
        
  turtle.bgcolor('black')
  turtle.pencolor('red')
  turtle.up()
  turtle.goto(-20, 120)
  turtle.down()
  X(10)
  turtle.hideturtle()

  turtle.mainloop()  

def draw_a(t, h):
  t.goto(-95, h)
  t.goto(-75, h+20)
  t.goto(-55, h)
  t.goto(100, h)

def draw_c(t, x, h):
  t.up()
  t.goto(x, h)
  t.down()
  t.goto(x-40, h+10)
  t.goto(x, h+20)

def draw_u(t, h):
  t.up()
  t.goto(55, h+20)
  t.down()
  t.goto(75, h)
  t.goto(95, h+20)

def draw_date(t, h):
  t.up()
  t.goto(-95, h)
  t.down()
  t.goto(-55, h+10)
  t.goto(-75, h+20)
  t.goto(-95, h+10)
  t.up()
  t.goto(-25, h)
  t.down()
  t.goto(-45, h+10)
  t.goto(-25, h+20)
  t.goto(-5, h+10)
  t.goto(-25, h)
  t.up()
  t.goto(25, h)
  t.down()
  t.goto(25, h+20)
  t.up()
  t.goto(75, h)
  t.down()
  t.goto(55, h+5)
  t.goto(95, h+15)
  t.goto(75, h+20)
  t.goto(55, h+15)
  t.goto(95, h+5)
  t.goto(75, h)

def bubbles(t, h):
  for i in range(-90, 91, 5):
    t.up()
    diff = random.random()-0.5
    t.goto(i, h-5-diff)
    t.down()
    shape = random.choice([0,1])
    diff = random.random()-0.5
    if shape==0:
      t.circle(3+diff)
    else:
      t.dot(8+diff*5)


def stars(t, h):
  for i in range(-95, 91, 10):
    t.up()
    diff = random.random()-0.5
    t.goto(i, h+2*diff)
    t.left(random.randint(0, 180))
    t.down()
    diff = random.random()-0.5
    for i in range(5):
      t.forward(10+2*diff)
      t.left(144)
  t.setheading(0)

def lines():
  turtle.setworldcoordinates(-110, -150, 110, 110)
  turtle.bgcolor('black')
  t = turtle.Turtle()
  t.color("red")
  t.pensize (3.)

  draw_date(t, -100)

  for i in range(-140, -70, 20):
    t.up()
    t.goto(-100, i)
    t.down()
    t.forward(200)

  bubbles(t, -130)
  stars(t, 80)

  t.up()
  t.goto(-100, -60)
  t.down()
  draw_a(t,-60)

  t.up()
  t.goto(-100, -40)
  t.down()
  draw_a(t,-40)
  draw_c(t,-5,-40)

  t.up()
  t.goto(-100, -20)
  t.down()
  draw_a(t,-20)
  draw_c(t,-5,-20)
  draw_c(t,45,-20)

  t.up()
  t.goto(-100, 0)
  t.down()
  draw_a(t,0)
  draw_c(t,-5,0)
  draw_c(t,45,0)
  draw_u(t,0)

  for i in range(20, 61, 20):
    t.up()
    t.goto(-100, i)
    t.down()
    t.forward(200)

  t.ht()
  turtle.hideturtle()
  turtle.mainloop()

if __name__ == '__main__':
  #mandala()
  #dragon()
  lines()