Donut

import os
import sys
import math

WIDTH = 30
HEIGHT = 15

A = 0
B = 0
S = [46, 44, 45, 126, 58, 59, 61, 33, 42, 35, 36, 64]
while True:
    b = [32] * 1760
    z = [0] * 1760
    j = 0
    while j < 6.28:
        i = 0;
        while i < 6.28:
            c = math.sin(i)
            l = math.cos(i)
            f = math.sin(j)
            d = math.cos(j)
            e = math.sin(A)
            g = math.cos(A)
            n = math.sin(B)
            m = math.cos(B)
            h = c * (d + 2)
            q = l * (d + 2)
            t = h * g - f * e
            D = 1 / (h * e + f * g + 5)
            o = int(1000 + WIDTH * D * (q * m - t * n) + 80 * int(HEIGHT * D * (q * n + t * m)))
            if 1760 > o and D > z[o]:
                z[o] = D
                r = c * d
                N = int(8 * ((f * e - r * g) * m - r * e - f * g - l * d * n))
                if N < 0:
                    N = 0

                b[o] = S[N]

            i += 0.02

        j += 0.07

    os.system('clear')
    o = 0
    while o < 1761:
        if o % 80 == 0:
            p = chr(10)
        else:
            p = chr(b[o])
        sys.stdout.write(p)
        sys.stdout.flush()
        o += 1

    A += 0.04
    B += 0.02