Polygon Draw

import pyglet
from math import *
from pyglet.gl import *


class Polygon(object):
    def __init__(self, batch: pyglet.graphics.Batch, x_coor, y_coor, radius, sides, r, g, b, a):
        """
        Tuple 1:
        Because vertex data can be supplied in several forms,
        a “format string” is required. In this case, the format
        string is "v2i", meaning the vertex position data has
        two components (2D) that are of int type.

        Tuple 2:
        Specifies color of the polygon.
        c = color
        4 = with transparency (3 is without transparency, "alpha" in programming terms)
        """
        vertex_coor_list = []
        central_angle = 360 / sides
        i = 0
        while i < sides:
            xv = floor(cos(radians(central_angle * i))*radius + x_coor)
            vertex_coor_list.append(xv)
            yv = floor(sin(radians(central_angle * i))*radius + y_coor)
            vertex_coor_list.append(yv)
            i += 1
        print(vertex_coor_list)

        self.vertex_list = batch.add(sides, pyglet.gl.GL_POLYGON, None,
                                     ('v2i', vertex_coor_list),
                                     ('c4B', [r, g, b, a] * 4)
                                     )


class Window(pyglet.window.Window):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.batch = pyglet.graphics.Batch()
        self.polygons = []

    def on_draw(self):
        self.clear()
        self.batch.draw()

    def draw_polygon(self, x_coor, y_coor, radius, sides, r=255, g=255, b=255, a=255):
        self.polygons.append(Polygon(self.batch, x_coor, y_coor, radius, sides, r, g, b, a))


window = Window()
x = window.width // 2
y = window.width // 2
window.draw_polygon(x, y, radius=25, sides=4)

pyglet.app.run()