今天看到一段python 爱心代码，后面测试跑跑

import random
from math import sin, cos, pi, log
from tkinter import *

CANVAS_WIDTH = 640
CANVAS_HEIGHT = 480
CANVAS_CENTER_X = CANVAS_WIDTH / 2
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2
IMAGE_ENLARGE = 11

设置颜色

HEART_COLOR = "#FF99CC"

def center_window(root, width, height):
screenwidth = root.winfo_screenwidth() # 获取显示屏宽度

screenheight = root.winfo_screenheight()  # 获取显示屏高度

size = '%dx%d+%d+%d' % (width, height, (screenwidth - width) /

                        2, (screenheight - height) / 2)  # 设置窗口居中参数

root.geometry(size)  # 让窗口居中显示

def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):
x = 16 * (sin(t) ** 3)

y = -(13 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(4 * t))

# 放大

x *= shrink_ratio
y *= shrink_ratio
# 移到画布中央

x += CANVAS_CENTER_X

y += CANVAS_CENTER_Y

return int(x), int(y)

def scatter_inside(x, y, beta=0.15):
ratio_x = - beta * log(random.random())

ratio_y = - beta * log(random.random())

dx = ratio_x * (x - CANVAS_CENTER_X)

dy = ratio_y * (y - CANVAS_CENTER_Y)

return x - dx, y - dy

def shrink(x, y, ratio):
force = -1 / (((x - CANVAS_CENTER_X) ** 2 +

               (y - CANVAS_CENTER_Y) ** 2) ** 0.6)

dx = ratio * force * (x - CANVAS_CENTER_X)

dy = ratio * force * (y - CANVAS_CENTER_Y)

return x - dx, y - dy

def curve(p):
return 2 * (2 * sin(4 * p)) / (2 * pi)

class Heart:

def __init__(self, generate_frame=20):

    self._points = set()  # 原始爱心坐标集合

    self._edge_diffusion_points = set()  # 边缘扩散效果点坐标集合

    self._center_diffusion_points = set()  # 中心扩散效果点坐标集合

    self.all_points = {}  # 每帧动态点坐标

    self.build(2000)

    self.random_halo = 1000

    self.generate_frame = generate_frame

    for frame in range(generate_frame):
        self.calc(frame)

def build(self, number):

    for _ in range(number):
        t = random.uniform(0, 2 * pi)

        x, y = heart_function(t)

        self._points.add((x, y))

    # 爱心内扩散

    for _x, _y in list(self._points):

        for _ in range(3):
            x, y = scatter_inside(_x, _y, 0.05)

            self._edge_diffusion_points.add((x, y))

    # 爱心内再次扩散

    point_list = list(self._points)

    for _ in range(4000):
        x, y = random.choice(point_list)

        x, y = scatter_inside(x, y, 0.17)

        self._center_diffusion_points.add((x, y))

@staticmethod
def calc_position(x, y, ratio):

    force = 1 / (((x - CANVAS_CENTER_X) ** 2 +

                  (y - CANVAS_CENTER_Y) ** 2) ** 0.520)

    dx = ratio * force * (x - CANVAS_CENTER_X) + random.randint(-1, 1)

    dy = ratio * force * (y - CANVAS_CENTER_Y) + random.randint(-1, 1)

    return x - dx, y - dy

def calc(self, generate_frame):

    ratio = 10 * curve(generate_frame / 10 * pi)

    halo_radius = int(4 + 6 * (1 + curve(generate_frame / 10 * pi)))

    halo_number = int(

        3000 + 4000 * abs(curve(generate_frame / 10 * pi) ** 2))

    all_points = []

    # 光环

    heart_halo_point = set()

    for _ in range(halo_number):

        t = random.uniform(0, 2 * pi)

        x, y = heart_function(t, shrink_ratio=11.6)

        x, y = shrink(x, y, halo_radius)

        if (x, y) not in heart_halo_point:
            heart_halo_point.add((x, y))

            x += random.randint(-14, 14)

            y += random.randint(-14, 14)

            size = random.choice((1, 2, 2))

            all_points.append((x, y, size))

    # 轮廓

    for x, y in self._points:
        x, y = self.calc_position(x, y, ratio)

        size = random.randint(1, 3)

        all_points.append((x, y, size))

    # 内容

    for x, y in self._edge_diffusion_points:
        x, y = self.calc_position(x, y, ratio)

        size = random.randint(1, 2)

        all_points.append((x, y, size))

    self.all_points[generate_frame] = all_points

    for x, y in self._center_diffusion_points:
        x, y = self.calc_position(x, y, ratio)

        size = random.randint(1, 2)

        all_points.append((x, y, size))

    self.all_points[generate_frame] = all_points

def render(self, render_canvas, render_frame):

    for x, y, size in self.all_points[render_frame % self.generate_frame]:
        render_canvas.create_rectangle(

            x, y, x + size, y + size, width=0, fill=HEART_COLOR)

def draw(main: Tk, render_canvas: Canvas, render_heart: Heart, render_frame=0):
render_canvas.delete('all')

render_heart.render(render_canvas, render_frame)

main.after(160, draw, main, render_canvas, render_heart, render_frame + 1)

if name == 'main':
root = Tk()

root.title("爱心")

center_window(root, CANVAS_WIDTH, CANVAS_HEIGHT)  # 窗口居中显示

canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)

canvas.pack()

heart = Heart()

draw(root, canvas, heart)

Label(root, text="I love you", bg="black", fg="#FF99CC", font="Helvetic 20 bold").place(

    relx=.5, rely=.5, anchor=CENTER)

root.mainloop()