{"id":"8HS2jXgkJX","url":"https://pastebin.ca/8HS2jXgkJX","raw_url":"https://raw.anybin.ca/8HS2jXgkJX","visibility":"public","access":"public","created_at":1791776198335,"expires_at":1792380998335,"fetch_limit":null,"fetches_used":0,"reads_remaining":null,"size_bytes":4541,"syntax_hint":null,"title":null,"filename":null,"change_note":null,"cipher":null,"cipher_meta":null,"parent_id":null,"root_id":"8HS2jXgkJX","version":1,"owner_id":null,"recipient_id":null,"body":"import random\nfrom math import sin, cos, pi, log\nfrom tkinter import *\n\nCANVAS_WIDTH = 840   #画布的宽\nCANVAS_HEIGHT = 680  #画布的高\nCANVAS_CENTER_X = CANVAS_WIDTH / 2  #画布中心的X轴坐标\nCANVAS_CENTER_Y = CANVAS_HEIGHT / 2  #画布中心的Y轴坐标\nIMAGE_ENLARGE = 11  #放大比例\nHEART_COLOR = \"#EEAEEE\" #引号内修改颜色！\n\ndef heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):\n    \"\"\"爱心函数生成器\"\"\"\n    #:param shrink_ratio:放大比例\n    #:param t:参数\n    #:return:坐标\n    #基础函数\n    x = 17 * (sin(t) ** 3)\n    y = -(16 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(3 * t))\n    #放大\n    x *= IMAGE_ENLARGE\n    y *= IMAGE_ENLARGE\n    #移到画布中央\n    x += CANVAS_CENTER_X\n    y += CANVAS_CENTER_Y\n    return int(x), int(y)\n\ndef scatter_inside(x, y, beta=0.15):\n    ratio_x = - beta * log(random.random())\n    ratio_y = - beta * log(random.random())\n    dx = ratio_x * (x - CANVAS_CENTER_X)\n    dy = ratio_y * (y - CANVAS_CENTER_Y)\n    return x - dx, y - dy\n\ndef shrink(x, y, ratio):\n    force = -1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.6)\n    dx = ratio * force * (x - CANVAS_CENTER_X)\n    dy = ratio * force * (y - CANVAS_CENTER_Y)\n    return x - dx, y - dy\n\ndef curve(p):\n    return 2 * (2 * sin(4 * p)) / (2 * pi)\n\nclass Heart:\n    def __init__(self, generate_frame=20):\n        self.points = set()\n        self.edge_diffusion_points = set()\n        self.center_diffusion_points = set()\n        self.all_points = {}\n        self.build(2000)\n        self.random_halo = 1000\n        self.generate_frame = generate_frame\n        for frame in range(generate_frame):\n            self.calc(frame)\n\n    def build(self, number):\n        for _ in range(number):\n            t = random.uniform(0, 2 * pi)\n            x, y = heart_function(t)\n            self.points.add((x, y))\n        for x,y in list(self.points):\n            for _ in range(3):\n                x,y = scatter_inside(x,y,0.05)\n                self.edge_diffusion_points.add((x,y))\n        point_list = list(self.points)\n        for _ in range(4000):\n            x,y = random.choice(point_list)\n            x,y = scatter_inside(x,y,0.17)\n            self.center_diffusion_points.add((x,y))\n\n    @staticmethod\n    def calc_position(x, y, ratio):\n        force = 1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.420)\n        dx = ratio * force * (x - CANVAS_CENTER_X) + random.randint(-1,1)\n        dy = ratio * force * (y - CANVAS_CENTER_Y) + random.randint(-1,1)\n        return x - dx, y - dy\n\n    def calc(self, generate_frame):\n        ratio = 10 * curve(generate_frame / 10 * pi)\n        halo_radius = int(4 + 6 * (1 + curve(generate_frame / 10 * pi)))\n        halo_number = int(3000 + 4000 * abs(curve(generate_frame / 10 * pi) ** 2))\n        all_points = []\n        heart_halo_point = set()\n        for _ in range(halo_number):\n            t = random.uniform(0, 2 * pi)\n            x, y = heart_function(t, shrink_ratio=11.6)\n            x, y = shrink(x, y, halo_radius)\n            if (x,y) not in heart_halo_point:\n                heart_halo_point.add((x,y))\n                x += random.randint(-14,14)\n                y += random.randint(-14,14)\n                size = random.choice((1,2,2))\n                all_points.append((x,y,size))\n        for x,y in self.points:\n            x,y = self.calc_position(x,y,ratio)\n            size = 1\n            all_points.append((x,y,size))\n        for x,y in self.edge_diffusion_points:\n            x,y = self.calc_position(x,y,ratio)\n            size = 2\n            all_points.append((x,y,size))\n        for x,y in self.center_diffusion_points:\n            x,y = self.calc_position(x,y,ratio)\n            size = 1\n            all_points.append((x,y,size))\n        self.all_points[generate_frame] = all_points\n\n    def render(self, render_canvas, render_frame):\n        for x,y,size in self.all_points[render_frame % self.generate_frame]:\n            render_canvas.create_rectangle(x, y, x+size, y+size, width=0, fill=HEART_COLOR)\n\ndef draw(main: Tk, render_canvas: Canvas, render_heart: Heart, render_frame=0):\n    render_canvas.delete('all')\n    render_heart.render(render_canvas, render_frame)\n    main.after(160, draw, main, render_canvas, render_heart, render_frame+1)\n\nif __name__ == '__main__':\n    root = Tk()\n    root.title(\"Heart\")\n    canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)\n    canvas.pack()\n    heart = Heart()\n    draw(root, canvas, heart)\n    root.mainloop()\n"}