用python祝节日快乐

# 画布

self.cv = cv

self.cid = ate_oval(x - size, y - size, x + size, y + size,

fill&#lor)

self.lifespan = lifespan

# 更新数据

def update(self, dt):

self.age += dt

# 粒子膨胀

if self.alive() pand():

move_x = cos(radians(self.id * 360 / al)) * self.initial_speed

move_y = sin(radians(self.id * 360 / al)) * self.initial_speed

ve(self.cid, move_x, move_y)

self.vx = move_x / (float(dt) * 1000)

# 膨胀到最大下落

elif self.alive():

move_x = cos(radians(self.id * 360 / al))

ve(self.cid, self.vx + move_x, self.vy + 0.5 * dt)

self.vy += 0.5 * dt

# 过期移除

elif self.cid is not None:

cv.delete(self.cid)

self.cid = None

# 定义膨胀效果的时间帧

def expand(self):

return self.age <= 1.5

# 检查粒子是否仍在生命周期内

def alive(self):

return self.age <= self.lifespan

燃放烟花

def ignite(cv):

t = time()

# 烟花列表

explode_points = []

wait_time = randint(10, 100)

# 爆炸的个数

numb_explode = randint(6, 10)

for point in range(numb_explode):

# 爆炸粒子列表

objects = []

# 爆炸 x 轴

x_cordi = randint(50, 550)

# 爆炸 y 轴

y_cordi = randint(50, 150)

speed = uniform(0.5, 1.5)

size = uniform(0.5, 3)

color = choice(colors)

# 爆炸的绽放速度

explosion_speed = uniform(0.2, 1)

# 爆炸的粒子数半径

total_particles = randint(10, 50)

for i in range(1, total_particles):

r = fireworks(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))

# 添加进粒子列表里

objects.append(r)

# 把粒子列表添加到烟花列表

explode_points.append(objects)

total_time = .0

# 在 1.8 秒时间帧内保持更新

while total_time < 1.8:

# 让画面暂停 0.01s

sleep(0.01)

# 刷新时间

tnew = time()

t, dt = tnew, tnew - t

# 遍历烟花列表

for point in explode_points:

# 遍历烟花里的粒子列表

for item in point:

# 更新时间

item.update(dt)

# 刷新页面

cv.update()

total_time += dt

root.after(wait_time, ignite, cv)

启动

if __name__ == "__main__":

root = tk.Tk()

# 绘制一个画布

cv = tk.Canvas(root, height=400, width=600)

# 背景图

image = Image.open("bg.jpg")

photo = ImageTk.PhotoImage(image)

# 在画板上绘制一张图片