Не получается нарисовать куб (не по GUI)

from math import atan;
 
def XYZtoXY(x, y, z, camera_x, camera_y, camera_z, fov, width, height):
    pitch = atan((x - camera_x) // (y - camera_y));
    yaw   = atan((z - camera_z) // (y - camera_y));
    x = round(width // 2 + (pitch * (width // fov)));
    y = round(height // 2 + (yaw * (height // fov)));
    return (x, y);
 
__position__ = (0, 0, 0);
__fov__ = 1;
 
def camera(x=0, y=0, z=0, fov=180):
    global __position__, __fov__;
    __position__ = (x, y, z);
    __fov__ = fov;
def cube(canvas, x, y, z, width, height, length):
    coords = [];
    coords.append((x - width // 2, y + height // 2, z - length // 2));
    coords.append((x + width // 2, y + height // 2, z - length // 2));
    coords.append((x - width // 2, y - height // 2, z - length // 2));
    coords.append((z + width // 2, y - height // 2, z - length // 2));
    coords2D = map(lambda xyz: XYZtoXY(*xyz, *__position__, __fov__, canvas.winfo_width(), canvas.winfo_height()), coords);
    canvas.create_polygon(*coords2D);
 
import tkinter as tk;
 
root = tk.Tk();
canv = tk.Canvas(bg='white');
canv.pack(expand=True, fill=tk.BOTH);
camera(1, 1, 1, 1);
cube(canv, 50, 50, 50, 100, 100, 100);
root.mainloop();

    coords2D = [(x * 30 + 80, y * 30 + 80) for x, y in coords2D]
    print(coords2D)
    canvas.create_polygon(*coords2D, fill='orange', outline='black')

canv = tk.Canvas(bg='white')#, width=200, height=200);
print(canv.winfo_width(), canv.winfo_height())