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python小程序编程代码（python实现烟花小程序）

更多 时间：2022-04-01 01:37:53 类别：脚本大全 浏览量：1145

python小程序编程代码

python实现烟花小程序

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()
    		•

    • 注意：这里需要安装tkinter，安装过程：

    step1：

    >>> import _tkinter # with underscore, and lowercase 't'

    step2：

    >>> import Tkinter # no underscore, uppercase 'T' for versions prior to V3.0

    >>> import tkinter # no underscore, lowercase 't' for V3.0 and later

    step3：

    >>> Tkinter._test() # note underscore in _test and uppercase 'T' for versions prior to V3.0 

    >>> tkinter._test() # note underscore in _test and lowercase 'T' for V3.0 and later

    然后就可以运行了，在代码中有一个背景照片部分，路径可自行选择！我这里就不修改了。

    以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持开心学习网。

    原文链接：https://blog.csdn.net/Dachao0707/article/details/82955710

    标签：Python 小程序 烟花
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