# CHRISTMAS LIGHTS MOSAIC
# Credit to Kevin Wortman, my professor, for the skeleton code.
import turtle

def draw_mosaic():

    turt = turtle.Turtle()
    turtle.colormode(255)
    colors = ['red','green','blue','yellow','orange','purple']
    turt.speed(0)

    draw_corner(turt, 0, 0, tile_x(0), tile_y(0))
    draw_corner(turt, 0, 19, tile_x(19), tile_y(0))
    draw_corner(turt, 19, 0, tile_x(0), tile_y(19))
    draw_corner(turt, 19, 19, tile_x(19), tile_y(19))

    # horizontal borders
    for col in range(1, 19):
        # top row
        draw_border_tile(turt, 0, col, tile_x(col), tile_y(0),colors[col%6])
        # bottom row
        draw_border_tile(turt, 19, col, tile_x(col), tile_y(19),colors[col%6])

    # vertical borders
    for row in range(1, 19):
        # left column
        draw_border_tile(turt, row, 0, tile_x(0), tile_y(row),colors[row%6])
        # right column
        draw_border_tile(turt, row, 19, tile_x(19), tile_y(row),colors[row%6])

    # inset
    for row in range(2, 18):
        for col in range(1, 18):
            draw_inset_tile(turt, row, col, tile_x(col), tile_y(row))
    
    # centerpiece
    draw_centerpiece(turt, 0, 0,colors)

def tile_x(col):
    return -300 + (30 * col)

def tile_y(row):
    return -300 + (30 * row)

def draw_corner(turt, row, col, x, y):
    colors = ['red','green','blue']
    turt.up()
    turt.setpos(x, y)
    turt.down()
    for i in range(3):
        turt.fillcolor(colors[i])
        turt.begin_fill()
        turt.circle(6)
        turt.right(120)
        turt.end_fill()

def draw_border_tile(turt, row, col, x, y, color):
    turt.up()
    turt.setpos(x, y)
    turt.down()
    turt.fillcolor(color)
    turt.begin_fill()
    for _ in range(2):
        turt.right(45)
        turt.forward(5)
    turt.left(180)
    for _ in range(2):
        turt.right(45)
        turt.forward(5)
    turt.right(90)
    for _ in range(2):
        turt.right(45)
        turt.forward(5)
    turt.left(180)
    for _ in range(2):
        turt.right(45)
        turt.forward(5)
    turt.end_fill()
    
def draw_inset_tile(turt, row, col, x, y):
    turt.color(160,82,45)
    turt.up()
    turt.setpos(x, y)
    turt.down()
    turt.circle(15,180)
    turt.up()
    turt.setpos(x+15, y-15)
    turt.down()
    turt.circle(15,-180)

def draw_centerpiece(turt, x, y,colors):
    i = 0
    for angle in range(0, 360, 10):
        draw_centerpiece_stencil(turt, x, y, angle,colors[i%6])
        i += 1

def draw_centerpiece_stencil(turt, x, y, angle,color):
    turt.fillcolor(color)
    turt.up()
    turt.setpos(x, y)
    turt.color(color)
    turt.down()
    turt.setheading(angle)
    turt.circle(100)
    turt.forward(100)
    turt.begin_fill()
    turt.circle(10)
    turt.end_fill()
    turt.right(20)
    turt.forward(100)

    turt.begin_fill()
    for _ in range(2):
        turt.right(45)
        turt.forward(10)
    turt.left(180)
    for _ in range(2):
        turt.right(45)
        turt.forward(10)
    turt.right(90)
    for _ in range(2):
        turt.right(45)
        turt.forward(10)
    turt.left(180)
    for _ in range(2):
        turt.right(45)
        turt.forward(10)
    turt.end_fill()
    

turtle.setup(800, 800)
wn = turtle.Screen()
draw_mosaic()
wn.exitonclick()