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

CANVAS_WIDTH = 640 # 宽 CANVAS_HEIGHT = 480 # 高 CANVAS_CENTER_X = CANVAS_WIDTH / 2 CANVAS_CENTER_Y = CANVAS_HEIGHT / 2 IMAGE_ENLARGE = 11 # 放大比例 HEART_COLOR = '#FF69B4'

def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE): """ “爱心函数生成器” :param shrink_ratio: 放大比例 :param t: 参数 :return: 坐标 """

基础函数

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): """ 随机内部扩散 :param x: 原x :param y: 原y :param beta: 强度 :return: 新坐标 """ 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): """ 抖动 :param x: 原x :param y: 原y :param ratio: 比例 :return: 新坐标 """ 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): """ 自定义曲线函数，调整跳动周期 :param p: 参数 :return: 正弦 """ return 2 * (2 * sin(4 * p)) / (2 * pi)

class Heart: """ 爱心类 """ 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):
    # 爱心
    for _ in range(number):
        t = random.uniform(0, 2 * pi)       # 随机不到的地方造成爱心有缺口
        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):
    # 调整缩放比例
    force = 1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.520) # 魔法参数
    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)    # 圆滑的周期的缩放比例
    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()                        # 光环的点坐标集合
    for _ in range(halo_number):
        t = random.uniform(0, 2 * pi)               # 随机不到的地方造成爱心有缺口
        x, y = heart_function(t, shrink_ratio=11.6) # 魔法参数
        x, y = shrink(x, y, halo_radius)
        if (x, y) not in heart_halo_point:
            # 处理新的点
            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))

    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() # 一个Tk canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH) canvas.pack() heart = Heart() # 心 draw(root, canvas, heart) root.mainloop()