Python爱心代码

  • 代码
  • # 颜色可以参考12行注释修改
    # 微醺_日记

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

    CANVAS_WIDTH = 640 # 画布的宽
    CANVAS_HEIGHT = 480 # 画布的高
    CANVAS_CENTER_X = CANVAS_WIDTH / 2 # 画布中心的X轴坐标
    CANVAS_CENTER_Y = CANVAS_HEIGHT / 2 # 画布中心的Y轴坐标
    IMAGE_ENLARGE = 11 # 放大比例
    HEART_COLOR = "#ff3366" # 心的颜色(16进制代码) 参考链接:https://developer.aliyun.com/article/760003

    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) # 这个参数...
     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
     """
     # 可以尝试换其他的动态函数,达到更有力量的效果(贝塞尔?)
     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  root.title("微醺_日记") #设置窗口名 可以修改或注释掉
     canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)
     canvas.pack()
     heart = Heart() # 心
     draw(root, canvas, heart) # 开始画画~
     root.mainloop()
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