pyUnionJack-TurtleGraphics

# Usint Turtle Graphics to draw the Union Jack Flag

# Mike Kerry - Jan 2021 - acclivity2@gmail.com
import turtle

def goto(x, y):
    t.penup()
    t.goto(x,y)
    t.pendown()

def line(x, y):
    t.pendown()
    t.goto(x, y)

def triang(x, y, dir, turn):
    goto(x, y)
    t.begin_fill()
    t.seth(dir)
    t.forward(80)
    t.right(turn)
    t.forward(170)
    line(x, y)
    t.end_fill()

def triang2(x, y, dir, turn):
    goto(x, y)
    t.begin_fill()
    t.seth(dir)
    t.forward(25)
    t.right(turn)
    t.forward(50)
    line(x, y)
    t.end_fill()


t = turtle.Turtle()

t.speed(20)
t.pensize(60)
t.color('red')

# Central Red Cross
t.forward(210)
goto(0, 0)
t.backward(210)
goto(0, 0)
t.left(90)
t.forward(130)
goto(0, 0)
t.right(180)
t.forward(130)

# Large Blue Triangles
t.pensize(2)
t.color('blue')
t.fillcolor('blue')

triang(50, 50, 90, 90)
triang(-50, -50, 270, 90)
triang(-50, 50, 90, 270)
triang(50, -50, 270, 270)

# Small Blue Triangles
triang2(220, 65, 270, 90)
triang2(220, -65, 90, 270)
triang2(-220, -65, 90, 90)
triang2(-220, 65, 270, 270)

# Top Right diagonal Red
t.color('red')
t.pensize(20)
goto(-10, 0)
t.seth(25)
t.forward(260)
goto(35,35)
t.pensize(10)
t.color('white')
t.seth(0)
t.forward(100)

# Bottom Left diagonal Red
t.color('red')
t.pensize(20)
goto(10, 0)
t.seth(205)
t.forward(260)
goto(-35,-35)
t.pensize(10)
t.color('white')
t.seth(180)
t.forward(100)

# Bottom Right Diagonal Red
t.color('red')
t.pensize(20)
goto(30,0)
t.seth(335)
t.forward(220)
goto(60, -35)
t.pensize(10)
t.color('white')
t.seth(0)
t.forward(80)

# Top Left Diagonal Red
t.color('red')
t.pensize(20)
goto(-30,0)
t.seth(155)
t.forward(220)
goto(-60, 35)
t.pensize(10)
t.color('white')
t.seth(180)
t.forward(80)

# Outer White Border
t.pensize(30)
goto(-235, 145 )
t.seth(0)
t.forward(470)
t.right(90)
t.forward(290)
t.right(90)
t.forward(470)
t.right(90)
t.forward(300)

input()