Python-CLI/Donut.py at master · NitulKalita/Python-CLI · GitHub

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import os
from math import sin, cos


def main():
    a = 0
    b = 0

    height = 24
    width = 80

    while True:
        z = [0 for _ in range(4 * height * width)]
        screen = [' ' for _ in range(height * width)]

        j = 0
        while j < 6.28:
            j += 0.07
            i = 0
            while i < 6.28:
                i += 0.02

                sinA = sin(a)
                cosA = cos(a)
                cosB = cos(b)
                sinB = sin(b)

                sini = sin(i)
                cosi = cos(i)
                cosj = cos(j)
                sinj = sin(j)

                cosj2 = cosj + 2
                mess = 1 / (sini * cosj2 * sinA + sinj * cosA + 5)
                t = sini * cosj2 * cosA - sinj * sinA

                x = int(40 + 30 * mess * (cosi * cosj2 * cosB - t * sinB))

                y = int(11 + 15 * mess * (cosi * cosj2 * sinB + t * cosB))

                o = int(x + width * y)

                N = int(8 * (( sinj * sinA - sini * cosj * cosA) * cosB - sini * cosj * sinA - sinj * cosA - cosi * cosj * sinB))

                if 0 < y < height and 0 < x < width and z[o] < mess:
                    z[o] = mess
                    screen[o] = ".,-~:;=!*#$@"[N if N > 0 else 0]

        for index, char in enumerate(screen):
            if index % width == 0:
                print()
            else:
                print(char, end='')

        a += 0.04
        b += 0.02

main()