甜甜圈和贪吃蛇的后续

https://xalgord.in/python-project-make-spinning-donut-using-python/

import pygame
import math
import colorsys

pygame.init()

white = (255, 255, 255)
black = (0, 0, 0)
hue = 0

WIDTH = 1920
HEIGHT = 1080

x_start, y_start = 0, 0

x_separator = 10
y_separator = 20


rows = HEIGHT // y_separator
columns = WIDTH // x_separator
screen_size = rows * columns
x_offset = columns / 2
y_offset = rows / 2

# rotating animation
A, B = 0, 0

spacing1 = 10
spacing2 = 2

chars = "101010101010"  # luminance index

screen = pygame.display.set_mode((WIDTH, HEIGHT))

display_surface = pygame.display.set_mode((WIDTH, HEIGHT))
# display_surface = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
pygame.display.set_caption('Donut')
font = pygame.font.SysFont('Arial', 18, bold=True)


def hsv2rgb(h, s, v):
    return tuple(round(i * 255) for i in colorsys.hsv_to_rgb(h, s, v))


def text_display(letter, x_start, y_start):
    text = font.render(str(letter), True, hsv2rgb(hue, 1, 1))
    display_surface.blit(text, (x_start, y_start))


run = True
while run:

    screen.fill((black))

    z = [0] * screen_size  # Donut. Fills donut space
    b = [' '] * screen_size  # Background. Fills empty space

    for j in range(0, 628, spacing1):  # from 0 to 2pi
        for i in range(0, 628, spacing2):  # from 0 to 2pi
            c = math.sin(i)
            d = math.cos(j)
            e = math.sin(A)
            f = math.sin(j)
            g = math.cos(A)
            h = d + 2
            D = 1.5 / (c * h * e + f * g + 5)
            l = math.cos(i)
            m = math.cos(B)
            n = math.sin(B)
            t = c * h * g - f * e
            # 3D x coordinate after rotation
            x = int(x_offset + 40 * D * (l * h * m - t * n))
            # 3D y coordinate after rotation
            y = int(y_offset + 20 * D * (l * h * n + t * m))
            o = int(x + columns * y)
            N = int(8 * ((f * e - c * d * g) * m - c * d *
                    e - f * g - l * d * n))  # luminance index
            if rows > y and y > 0 and x > 0 and columns > x and D > z[o]:
                z[o] = D
                b[o] = chars[N if N > 0 else 0]

    if y_start == rows * y_separator - y_separator:
        y_start = 0

    for i in range(len(b)):
        A += 0.00001  # for faster rotation change to bigger value
        B += 0.000002  # for faster rotation change to bigger value
        if i == 0 or i % columns:
            text_display(b[i], x_start, y_start)
            x_start += x_separator
        else:
            y_start += y_separator
            x_start = 0
            text_display(b[i], x_start, y_start)
            x_start += x_separator

    pygame.display.update()

    hue += 0.005

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_ESCAPE:
                run = False

shiyanlou:~/ $ gedit donut.py                                                                                                                                                [8:10:57]

(gedit:244): GVFS-RemoteVolumeMonitor-WARNING **: remote volume monitor with dbus name org.gtk.vfs.UDisks2VolumeMonitor is not supported

(gedit:244): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
shiyanlou:~/ $ pip install --user pygame                                                                                                                                     [8:11:17]
Looking in indexes: http://mirrors.cloud.aliyuncs.com/pypi/simple/
Collecting pygame
  Downloading http://mirrors.cloud.aliyuncs.com/pypi/packages/71/ec/24512e03153a8acd3b9f920543e10497af7d8e271b9402ec6ebf60dbcde8/pygame-2.0.3-cp35-cp35m-manylinux_2_5_x86_64.manylinux1_x86_64.whl (13.3MB)
    100% |████████████████████████████████| 13.3MB 78.4MB/s 
Installing collected packages: pygame
Successfully installed pygame-2.0.3
You are using pip version 10.0.1, however version 20.3.4 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
shiyanlou:~/ $ python3 donut.py                                                                                                                                              [8:11:34]
pygame 2.0.3 (SDL 2.0.16, Python 3.5.2)
Hello from the pygame community. https://www.pygame.org/contribute.html
shiyanlou:~/ $