python 爱心代码

avatar
作者
筋斗云
阅读量:0

效果图:

在这里插入图片描述


代码:

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()  

广告一刻

为您即时展示最新活动产品广告消息,让您随时掌握产品活动新动态!