python煙花效果的代碼實例

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

root = tk.Tk()

w = tk.Label(root, text="Hello Tkinter!")

w.pack()
root.mainloop()

'''
particles 類
粒子在空中隨機生成隨機，變成一個圈、下墜、消失
屬性:
 - id: 粒子的id
 - x, y: 粒子的坐標
 - vx, vy: 在坐標的變化速度
 - total: 總數(shù)
 - age: 粒子存在的時長
 - color: 顏色
 - cv: 畫布
 - lifespan: 最高存在時長
'''
class part:
 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
  self.x = x
  self.y = y
  self.initial_speed = explosion_speed
  self.vx = vx
  self.vy = vy
  self.total = total
  self.age = 0self.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):
 # 粒子膨脹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.vx = move_x/(float(dt)*1000)
  self.vy = move_y/(float(dt)*1000)
  self.cv.move(self.cid, move_x, move_y)
 # 以自由落體墜落
 elif self.alive():
  move_x = cos(radians(self.id*360/self.total))
  # we technically don't need to update x, y because move will do the job
  self.cv.move(self.cid, self.vx + move_x, self.vy+GRAVITY*dt)
  self.vy += GRAVITY*dt
 # 如果粒子的生命周期已過，就將其移除
 elif self.cid is not None:
  cv.delete(self.cid)
  self.cid = None

# 定義膨脹效果的時間幀
def expand (self):
 return self.age <= 1.2
# 檢查粒子是否仍在生命周期內(nèi)
def alive(self):
 return self.age <= self.lifespan

numb_explode = randint(6,10)
# 為所有模擬煙花綻放的全部粒子創(chuàng)建一列表
for point in range(numb_explode):
 objects = []
 x_cordi = randint(50,550)
 y_cordi = randint(50, 150)  
 size = uniform (0.5,3)
 color = choice(colors)
 explosion_speed = uniform(0.2, 1)
 total_particles = randint(10,50)
 for i in range(1,total_particles):
  r = part(cv, idx = i, total = total_particles, explosion_speed = explosion_speed, x = x_cordi, y = y_cordi, 
  color=color, size = size, lifespan = uniform(0.6,1.75))
  objects.append(r)
explode_points.append(objects)

total_time = .0
# 在1.8秒時間幀內(nèi)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 part in point:
   part.update(dt)
 cv.update()
 total_time += dt

if __name__ == '__main__':
 root = tk.Tk()
 cv = tk.Canvas(root, height=600, width=600)
 # 繪制一個黑色背景
 cv.create_rectangle(0, 0, 600, 600, fill="black")
 cv.pack()
 root.protocol("WM_DELETE_WINDOW", close)
 # 在1秒后才開始調(diào)用stimulate()
 root.after(100, simulate, cv)
 root.mainloop()

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
# 模擬重力
GRAVITY = 0.05
# 顏色選項（隨機或者按順序）
colors = ['red', 'blue', 'yellow', 'white', 'green', 'orange', 'purple', 'seagreen', 'indigo', 'cornflowerblue']
'''
particles 類
粒子在空中隨機生成隨機，變成一個圈、下墜、消失
屬性:
 - id: 粒子的id
 - x, y: 粒子的坐標
 - vx, vy: 在坐標的變化速度
 - total: 總數(shù)
 - age: 粒子存在的時長
 - color: 顏色
 - cv: 畫布
 - lifespan: 最高存在時長
'''
class Particle:
 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
  self.x = x
  self.y = y
  self.initial_speed = explosion_speed
  self.vx = vx
  self.vy = vy
  self.total = total
  self.age = 0self.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):
  self.age += dt
  # 粒子范圍擴大
  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)
  # 以自由落體墜落
  elif self.alive():
   move_x = cos(radians(self.id * 360 / self.total))
   # we technically don't need to update x, y because move will do the job
   self.cv.move(self.cid, self.vx + move_x, self.vy + GRAVITY * dt)
   self.vy += GRAVITY * dt
  # 移除超過最高時長的粒子
  elif self.cid is not None:
   cv.delete(self.cid)
   self.cid = None
 # 擴大的時間
 def expand (self):
  return self.age <= 1.2
 # 粒子是否在最高存在時長內(nèi)
 def alive(self):
  return self.age <= self.lifespan
'''
循環(huán)調(diào)用保持不停
'''
def simulate(cv):
 t = time()
 explode_points = []
 wait_time = randint(10, 100)
 numb_explode = randint(6, 10)
 # 創(chuàng)建一個所有粒子同時擴大的二維列表
 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(0.5, 3)
  color = choice(colors)
  explosion_speed = uniform(0.2, 1)
  total_particles = randint(10, 50)
  for i in range(1, total_particles):
   r = Particle(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))
   objects.append(r)
  explode_points.append(objects)
 total_time = .0
 # 1.8s內(nèi)一直擴大
 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
 # 循環(huán)調(diào)用
 root.after(wait_time, simulate, cv)
def close(*ignore):
 """退出程序、關閉窗口"""
 global root
 root.quit()
if __name__ == '__main__':
 root = tk.Tk()
 cv = tk.Canvas(root, height=400, width=600)
 # 選一個好看的背景會讓效果更驚艷！
 image = Image.open("./image.jpg")
 photo = ImageTk.PhotoImage(image)
 cv.create_image(0, 0, image=photo, anchor='nw')
 cv.pack()
 root.protocol("WM_DELETE_WINDOW", close)
 root.after(100, simulate, cv)
 root.mainloop()