爱站程序员基地目录
- 1.导库
- 2.烟花颜色
- 3.定义烟花类
- 4.燃放烟花
- 5.启动
我们用到的 Python 模块包括：tkinter、PIL、time、random、math，如果第三方模块没有装的话，pip install 一下即可，下面看一下代码实现。
1.导库
import tkinter as tkfrom PIL import Image, ImageTkfrom time import time, sleepfrom random import choice, uniform, randintfrom math import sin, cos, radians
2.烟花颜色
colors = [\'red\', \'blue\', \'yellow\', \'white\', \'green\', \'orange\', \'purple\', \'seagreen\', \'indigo\', \'cornflowerblue\']
3.定义烟花类
class fireworks: def __init__(self, cv, idx, total, explosion_speed, x=0., y=0., vx=0., vy=0., size=2., color=\'red\', lifespan=2, **kwargs): self.id = idx # 烟花绽放 x 轴 self.x = x # 烟花绽放 x 轴 self.y = y self.initial_speed = explosion_speed # 外放 x 轴速度 self.vx = vx # 外放 y 轴速度 self.vy = vy # 绽放的粒子数 self.total = total # 已停留时间 self.age = 0 # 颜色 self.color = color # 画布 self.cv = cv self.cid = self.cv.create_oval(x - size, y - size, x + size, y + size, fill=self.color) self.lifespan = lifespan # 更新数据 def update(self, dt): self.age += dt # 粒子膨胀 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.cv.move(self.cid, move_x, move_y) self.vx = move_x / (float(dt) * 1000) # 膨胀到最大下落 elif self.alive(): move_x = cos(radians(self.id * 360 / self.total)) self.cv.move(self.cid, self.vx + move_x, self.vy + 0.5 * dt) self.vy += 0.5 * dt # 过期移除 elif self.cid is not None: cv.delete(self.cid) self.cid = None # 定义膨胀效果的时间帧 def expand(self): return self.age <= 1.5 # 检查粒子是否仍在生命周期内 def alive(self): return self.age <= self.lifespan
4.燃放烟花
def ignite(cv): t = time() # 烟花列表 explode_points = [] wait_time = randint(10, 100) # 爆炸的个数 numb_explode = randint(6, 10) for point in range(numb_explode): # 爆炸粒子列表 objects = [] # 爆炸 x 轴 x_cordi = randint(50, 550) # 爆炸 y 轴 y_cordi = randint(50, 150) speed = uniform(0.5, 1.5) size = uniform(0.5, 3) color = choice(colors) # 爆炸的绽放速度 explosion_speed = uniform(0.2, 1) # 爆炸的粒子数半径 total_particles = randint(10, 50) for i in range(1, total_particles): r = fireworks(cv, idx=i, total=total_particles, explosion_speed=explosion_speed, x=x_cordi, y=y_cordi, vx=speed, vy=speed, color=color, size=size, lifespan=uniform(0.6, 1.75)) # 添加进粒子列表里 objects.append(r) # 把粒子列表添加到烟花列表 explode_points.append(objects) total_time = .0 # 在 1.8 秒时间帧内保持更新 while total_time < 1.8: # 让画面暂停 0.01s sleep(0.01) # 刷新时间 tnew = time() t, dt = tnew, tnew - t # 遍历烟花列表 for point in explode_points: # 遍历烟花里的粒子列表 for item in point: # 更新时间 item.update(dt) # 刷新页面 cv.update() total_time += dt root.after(wait_time, ignite, cv)
5.启动
if __name__ == \"__main__\": root = tk.Tk() # 绘制一个画布 cv = tk.Canvas(root, height=400, width=600) # 背景图 image = Image.open(\"bg.jpg\") photo = ImageTk.PhotoImage(image) # 在画板上绘制一张图片 cv.create_image(0, 0, image=photo, anchor=\'nw\') cv.pack() root.protocol(close) root.after(100, ignite, cv) # 生成窗口 root.mainloop()
看一下效果：
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