源代码如下(遇上篇烟花代码几乎一样,参数值稍微不一样):
# -*- coding: utf-8 -*- # Nola import tkinter as tk from PIL import Image, ImageTk from time import time, sleep from random import choice, uniform,randint from math import sin, cos, radians # # 初始化tkinter 创建根部件 必须在创建其他部件之前创建 且只有一个 # root = tk.Tk() # # Label部件 # w = tk.Label(root, text="Hello Tkinter!") # # pack告诉tkinter调整窗口大小适应所用的小部件 # w.pack() # root.mainloop() # 模拟重力 GRAVITY = 0.05 colors = ['red', 'blue', 'pink', 'white', 'green', 'orange', 'purple', 'seagreen', 'indigo', 'cornflowerblue'] class Part(object): """ particles 类 粒子在空中随机生成,变成一个圈,下坠,消失 """ def __init__(self, cv, idx, total, explosion_speed, x=0., y=0., vx=0., vy=0., size=2., color='red', lifespan=2, **kwargs): """ :param cv: 画布 :param idx: 粒子的id :param total: 总数 :param explosion_speed: 粒子初始速度 :param x: 粒子的横坐标 :param y: 粒子的纵坐标 :param vx: 粒子在x轴上的变化速度 :param vy: 粒子在y轴上的变化速度 :param size: 大小 :param color: 颜色 :param lifespan: 最高存在时长 :param kwargs: """ self.id = idx self.x = x self.y = y self.initial_speed = explosion_speed self.vx = vx self.vy = vy self.total = total self.age = 0 self.color = color self.cv = cv self.cid = self.cv.create_oval( x - size, y - size, x + size, y + size, fill=self.color ) self.lifespan = lifespan def update(self, dt): """ 粒子运动函数,膨胀 :param dt: :return: """ self.age += dt if self.alive() and self.expand(): move_x = cos(radians(self.id*360 / self.total)) * self.initial_speed move_y = sin(radians(self.id*360 / self.total)) * self.initial_speed # self.vy = move_y / (float(dt)*1000) self.cv.move(self.cid, move_x, move_y) self.vx = move_x / (float(dt) * 1000) # 以自由落体坠落 elif self.alive(): move_x = cos(radians(self.id*360 / self.total)) self.cv.move(self.cid, self.vx + move_x, self.vy + GRAVITY*dt) self.vy += GRAVITY * dt # 移除超过最高时长的粒子 elif self.cid is not None: self.cv.delete(self.cid) self.cid = None def alive(self): """ 检查粒子是否在最高存在时长内 :return: bool """ return self.age <= 1.2 def expand(self): """ 定义膨胀效果时间帧 :return: bool """ return self.age <= self.lifespan def simulate(cv): """ 循环调用保持不停 :param cv: 画布 :return: """ numb_explode = randint(6, 10) wait_time = randint(10, 100) explode_points = [] t = time() # 为所有模拟烟花绽放的全部粒子创建一个列表 for point in range(numb_explode): objects = [] x_cordi = randint(50, 550) y_cordi = randint(50, 150) speed = uniform(0.5, 1.5) size = uniform(1, 3) # 随机生成一个0.5-3之间的实数 color = choice(colors) explosion_speed = uniform(0.2, 1) total_particals = randint(5, 50) for i in range(1, total_particals): r = Part(cv, idx=1, total=total_particals, explosion_speed=explosion_speed, x=x_cordi, y=y_cordi, vx=speed, vy=speed ,color=color, size=size, lifespan=uniform(0.6,1.75)) objects.append(r) explode_points.append(objects) # 设置每个粒子没0.01秒更新状态 生命周期1.8秒 1.6秒存活(1.2秒绽放,0.4秒坠落,0.2秒移除) total_time = .0 # 在1.8秒时间帧内保持更新 while total_time < 1.8: sleep(0.01) tnew = time() t, dt = tnew, tnew - t for point in explode_points: for item in point: item.update(dt) cv.update() total_time += dt # 循环调用 root.after(wait_time, simulate, cv) def close(*ignore): """ 退出程序,关闭窗口 :param ignore: :return: """ global root root.quit() if __name__ == '__main__': # 初始化tkinter 创建根部件 root = tk.Tk() cv = tk.Canvas(root, height=400, width=600) # 绘制一个黑色背景 cv.create_rectangle(0, 0, 600, 600, fill='black') # 使用背景图片 # image = Image.open('./image.png') # photo = ImageTk.PhotoImage(image) # cv.create_image(0, 0, image=photo, anchor='nw') cv.pack() root.protocol('WM_DELETE_WINDOW', close) # 1秒后开始条约simulate() root.after(100, simulate, cv) root.mainloop()
实践出真知~