Python实现浪漫的樱花与烟花雨

本文参考了https://blog.csdn.net/weixin_43943977/article/details/102691392博主的樱花以及https://blog.csdn.net/weixin_44786530/article/details/90311184博主的烟花

“樱花是爱情与希望的象征，代表着高雅，质朴纯洁的爱情。樱花宛如懵懂少女的，安静得在春天开放，满树的白色粉色的樱花，是对情人诉说爱情的最美语言。心中的某个人，就如那场寂寞的樱花雨，缓缓消失在时光的深处，留下永恒的记忆。”

“烟花过后,灿烂瞬间转为平淡。瞬息万变的烟花，花瓣如雨，纷纷坠落，似乎触手可及，却只是昙花一现。”

试着将樱花与烟花结合起来，但烟花却无法在上空绽放，后面再调整吧

源码如下：

import turtle
import random
import time
from PIL import Image, ImageTk
# from time import sleep
import tkinter as tk
from time import sleep
from random import choice, uniform, randint
from math import sin, cos, radians# 模拟重力
GRAVITY = 0.05
# 颜色选项（随机或者按顺序）
colors = ['red', 'blue', 'yellow', 'white', 'green', 'orange', 'purple', 'seagreen', 'indigo', 'cornflowerblue']# 画樱花的躯干(60,t)
def Tree(branch, t):time.sleep(0.0005)if branch > 3:if 8 <= branch <= 12:if random.randint(0, 2) == 0:t.color('snow')  # 白else:t.color('lightcoral')  # 淡珊瑚色t.pensize(branch / 3)elif branch < 8:if random.randint(0, 1) == 0:t.color('snow')else:t.color('lightcoral')  # 淡珊瑚色t.pensize(branch / 2)else:t.color('sienna')  # 赭(zhě)色t.pensize(branch / 10)  # 6t.forward(branch)a = 1.5 * random.random()t.right(20 * a)b = 1.5 * random.random()Tree(branch - 10 * b, t)t.left(40 * a)Tree(branch - 10 * b, t)t.right(20 * a)t.up()t.backward(branch)t.down()# 掉落的花瓣
def Petal(m, t):for i in range(m):a = 200 - 400 * random.random()b = 10 - 20 * random.random()t.up()t.forward(b)t.left(90)t.forward(a)t.down()t.color('lightcoral')  # 淡珊瑚色t.circle(1)t.up()t.backward(a)t.right(90)t.backward(b)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 = idxself.x = xself.y = yself.initial_speed = explosion_speedself.vx = vxself.vy = vyself.total = totalself.age = 0self.color = colorself.cv = cvself.cid = self.cv.create_oval(x - size, y - size, x + size,y + size, fill=self.color)self.lifespan = lifespandef update(self, dt):self.age += dt# 粒子范围扩大if self.alive() and self.expand():move_x = cos(radians(self.id * 360 / self.total)) * self.initial_speedmove_y = sin(radians(self.id * 360 / self.total)) * self.initial_speedself.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))# we technically don't need to update x, y because move will do the jobself.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:cv.delete(self.cid)self.cid = None# 扩大的时间def expand (self):return self.age <= 1.2# 粒子是否在最高存在时长内def alive(self):return self.age <= self.lifespan'''
循环调用保持不停
'''
def simulate(cv):# time.sleep(0.0005)t1 = time.time()explode_points = []wait_time = randint(10, 100)numb_explode = randint(6, 10)# 创建一个所有粒子同时扩大的二维列表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内一直扩大while total_time < 1.8:sleep(0.01)tnew = time.time()t1, dt = tnew, tnew - t1for 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"""global rootroot.quit()if __name__ == '__main__':root = tk.Tk()cv = tk.Canvas(root, height=520, width=750)cv.pack()image = Image.open("./black.jpg")photo = ImageTk.PhotoImage(image)w = turtle.TurtleScreen(cv)t = turtle.RawTurtle(w)# 选一个好看的背景会让效果更惊艳！cv.create_image(0, 0, image=photo)# root.mainloop()t.hideturtle()  # 隐藏画笔t.getscreen().tracer(5, 0)w.screensize(bg='black')  # wheat小麦t.left(90)t.up()t.backward(150)t.down()t.color('sienna')# 画樱花的躯干Tree(60, t)# 掉落的花瓣Petal(200, t)root.protocol("WM_DELETE_WINDOW", close)root.after(100, simulate, cv)root.mainloop()
# w.exitonclick()

注：原樱花采用Turtle，烟花采用tkinter，结合需将Turtle转化为tkinter，转化代码为：

root = tk.Tk()
cv = tk.Canvas(root, height=520, width=750)
w = turtle.TurtleScreen(cv)
t = turtle.RawTurtle(w)

以及import time与from time import time的区别。

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