python 爱心代码

效果图：

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代码：

import randomfrom math import sin, cos, pi, logfrom tkinter import *CANVAS_WIDTH = 640CANVAS_HEIGHT = 480CANVAS_CENTER_X = CANVAS_WIDTH / 2CANVAS_CENTER_Y = CANVAS_HEIGHT / 2IMAGE_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 - dydef 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 - dydef 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()

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