python实现烟花小程序_Python

本文实例为大家分享了python实现烟花小程序的具体代码，供大家参考，具体内容如下

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									'''

									FIREWORKS SIMULATION WITH TKINTER

									*self-containing code

									*to run: simply type python simple.py in your console

									*compatible with both Python 2 and Python 3

									*Dependencies: tkinter, Pillow (only for background image)

									*The design is based on high school physics, with some small twists only for aesthetics purpose

									import tkinter as tk

									#from tkinter import messagebox

									#from tkinter import PhotoImage

									from PIL import Image, ImageTk

									from time import time, sleep

									from random import choice, uniform, randint

									from math import sin, cos, radians

									# gravity, act as our constant g, you can experiment by changing it

									GRAVITY = 0.05

									# list of color, can choose randomly or use as a queue (FIFO)

									colors = ['red', 'blue', 'yellow', 'white', 'green', 'orange', 'purple', 'seagreen','indigo', 'cornflowerblue']

									Generic class for particles

									particles are emitted almost randomly on the sky, forming a round of circle (a star) before falling and getting removed

									from canvas

									Attributes:

									 - id: identifier of a particular particle in a star

									 - x, y: x,y-coordinate of a star (point of explosion)

									 - vx, vy: speed of particle in x, y coordinate

									 - total: total number of particle in a star

									 - age: how long has the particle last on canvas

									 - color: self-explantory

									 - cv: canvas

									 - lifespan: how long a particle will last on canvas

									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 = 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):

									  self.age += dt

									  # particle expansions

									  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)

									  # falling down in projectile motion

									  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

									  # remove article if it is over the lifespan

									  elif self.cid is not None:

									   cv.delete(self.cid)

									   self.cid = None

									 # define time frame for expansion

									 def expand (self):

									  return self.age <= 1.2

									 # check if particle is still alive in lifespan

									 def alive(self):

									  return self.age <= self.lifespan

									Firework simulation loop:

									Recursively call to repeatedly emit new fireworks on canvas

									a list of list (list of stars, each of which is a list of particles)

									is created and drawn on canvas at every call, 

									via update protocol inside each 'part' object

									def simulate(cv):

									 t = time()

									 explode_points = []

									 wait_time = randint(10,100)

									 numb_explode = randint(6,10)

									 # create list of list of all particles in all simultaneous explosion

									 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 = part(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

									 # keeps undate within a timeframe of 1.8 second

									 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

									 # recursive call to continue adding new explosion on canvas

									 root.after(wait_time, simulate, cv)

									def close(*ignore):

									 """Stops simulation loop and closes the window."""

									 global root

									 root.quit()

									if __name__ == '__main__':

									 root = tk.Tk()

									 cv = tk.Canvas(root, height=600, width=600)

									 # use a nice background image

									 image = Image.open("./image1.jpg")#背景照片路径自行选择，可以选择酷炫一点的，看起来效果会#更好

									 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()