# Tk_polygon_opacity.py

# Tk_polygon_opacity.py

from Tkinter import *
from PIL import Image, ImageDraw, ImageTk

def create_polygon(zzz, **kwargs):
    if "alpha" in kwargs:
        if "fill" in kwargs:
            # Get and process the input data
            fill = root.winfo_rgb(kwargs.pop("fill")) + (int(kwargs.pop("alpha") * 255),)
            outline = kwargs.pop("outline") if "outline" in kwargs else None

            # We need to find a rectangle the polygon is inscribed in
            # (max(args[::2]), max(args[1::2])) are x and y of the bottom right point of this rectangle
            # and they also are the width and height of it respectively (the image will be inserted into
            # (0, 0) coords for simplicity)
            image = Image.new("RGBA", (400, 400))
            ImageDraw.Draw(image).polygon(zzz, fill=fill, outline=outline)

            images.append(ImageTk.PhotoImage(image))  # prevent the Image from being garbage-collected
            return canvas.create_image(0, 0, image=images[-1], anchor="nw")  # insert the Image to the 0, 0 coords
        raise ValueError("fill color must be specified!")
    return canvas.create_polygon(zzz, **kwargs)

images = []  # to hold the newly created image(s)

def star_5pt(x,y,s):
    a,b,c,d,e,f,g,h,j,k,m,n,p = 0,180,294,476,250,192,308,500,340,402,357,96,157
    plot_xy = [(a,b),(f,b),(e,a),(g,b),(h,b),(j,c),(k,d),(e,m),(n,d),(p,c)]
    nova=[]
    for xy in plot_xy:
        xy = (xy[0]*0.002)*s+x,(xy[1]*0.002)*s+y
        nova.append(xy)
    return tuple(nova)

star = star_5pt(30,60,200)

root = Tk()

canvas = Canvas(width=260, height=310)
canvas.pack()


pyTk = [(98, 112), (120, 112), (86, 176), (110, 176), (74, 268), (160, 176), (132, 176), (186, 112), (158, 112), (238, 32), (128, 32)]

create_polygon(pyTk, fill="yellow", alpha=0.9, outline="black")
create_polygon(star, fill="blue", alpha=0.5)

root.mainloop()