# tk_3D_procedural_slither.py

# tk_3D_procedural_slither.py

import tkinter as tk
import math
import random

ww = 600
hh = 600
cx, cy = ww//2, hh//2
direction = [0, 0, 0, 0]  # initial direction
degrees = math.radians(359.9999999999)
print(degrees)

root = tk.Tk()
root.title("tk_3D_procedural_slither")
root.geometry("%dx%d+10+10"%(ww,hh))
canvas = tk.Canvas(root, bg='white', width=ww, height=hh)
canvas.pack()

points = []
angles = [angle*0.0002 for angle in range(100, 401)]
angles += [-angle*0.0002 for angle in range(100, 401)]

def movement():
    x = int(cx + math.cos(direction[0]) * (math.cos(direction[1]) * (cx - 350)))
    y = int(cy + math.sin(direction[2]) * (math.sin(direction[3]) * (cy - 250)))
    return (x, y)


rgb = [i for i in range(0, 256, 5)]
colors = ['#{:02x}{:02x}{:02x}'.format(r,g,b) for r in rgb for g in rgb for b in rgb][40:-40]
random.shuffle(colors)

p = []
i = 0
points.append(movement())
scale = 1.01
# Zoom into the center of the screen
while True:
    try:
        canvas.delete(p.pop(-160))
    except:
        0
    points.append(movement())
    points = points[-2:]
    angles.extend([angles.pop(0), angles.pop(101), angles.pop(57), angles.pop(21)])
    angles.insert(11, angles.pop(99))
    direction = [angles[-i] + direction[i] for i in (0, 1, 2, 3)] # update the direction
    canvas.scale('all', cx, cy, scale, scale)
    for item in canvas.find_all():
        width = canvas.itemcget(item, 'width')
        new_width = float(width) * 1.01
        canvas.itemconfig(item, width=new_width)
    color = colors.pop(0)
    p += [canvas.create_line(points, smooth=True, fill=color, width=3, capstyle='round')]
    canvas.lower(p[-1])
    colors.insert(-(10-int(i%10)), color)
    i += scale
    i %= 999999999999
    canvas.update()