python炫酷烟花源代码
python实现浪漫的烟花秀无意中看到一段用tkinter库写的放烟花的程序，就跟着跑了一遍。
设计理念：通过让画面上一个粒子分裂为x数量的粒子来模拟爆炸效果。粒子会发生“膨胀”，意思是它们会以恒速移动且相互之间的角度相等。这样就能让我们以一个向外膨胀的圆圈形式模拟出烟花绽放的画面。经过一定时间后，粒子会进入“自由落体”阶段，也就是由于重力因素它们开始坠落到地面，仿若绽放后熄灭的烟花。
首先我们写一个粒子类，表示烟花事件中的每个粒子，包含大小，颜色，位置，速度等属性以及粒子经历的三个阶段的函数，即：膨胀、坠落、消失。
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'''particles 类粒子在空中随机生成随机，变成一个圈、下坠、消失属性: - id: 粒子的id - x, y: 粒子的坐标 - vx, vy: 在坐标的变化速度 - total: 总数 - age: 粒子存在的时长 - color: 颜色 - cv: 画布 - lifespan: 最高存在时长''' 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 = 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 # 粒子范围扩大 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 job self.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 |
接下来我们需要创建一列列表，每个子列表是一个烟花，其包含一列粒子，每个列表中的粒子有相同的x,y坐标、大小、颜色、初始速度。
源码如下：
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import tkinter as tkfrom pil import image, imagetkfrom time import time, sleepfrom random import choice, uniform, randintfrom 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'] '''particles 类粒子在空中随机生成随机，变成一个圈、下坠、消失属性: - id: 粒子的id - x, y: 粒子的坐标 - vx, vy: 在坐标的变化速度 - total: 总数 - age: 粒子存在的时长 - color: 颜色 - cv: 画布 - lifespan: 最高存在时长''' 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 = 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 # 粒子范围扩大 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 job self.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): t = 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() t, dt = tnew, tnew - t for 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 root root.quit() if __name__ == '__main__': root = tk.tk() cv = tk.canvas(root, height=360, width=480) # 选一个好看的背景会让效果更惊艳！ image = image.open("./image.jpg" alt="python炫酷烟花源代码（python实现浪漫的烟花秀）" border="0" /> 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() |
效果图（背景请忽略哈哈）：
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原文链接：https://blog.csdn.net/neil3611244/article/details/84836520