我剛剛開始使用graphics.py，并試圖制造一些移動的雨。from graphics import *import random as rrects = []colorList = [color_rgb(255, 170, 204), color_rgb(255, 187, 204), color_rgb(255, 204, 204), color_rgb(255, 221, 204), color_rgb(255, 238, 204)]def main(): r.seed() win = GraphWin("Random Squares", 800, 800) win.setBackground("black") for i in range(3000): x1 = r.randint(0,800) x2 = r.randint(0,10) y1 = x1+5 y2 = x2+20 var = Rectangle(Point(x1,x2), Point(y1,y2)) rects.append(var) rects[i].setFill(r.choice(colorList)) rects[i].draw(win) for i in range(len(rects)): rects[i].move(0,r.randint(10,100)) update(10000) win.getMouse() win.close()if __name__ == '__main__': main()我認為我遇到的問題是，添加每個新矩形時都會發生移動更新。誰能幫我想出更好的方法來做到這一點？
1 回答
小怪獸愛吃肉
TA貢獻1852條經驗 獲得超1個贊
我的建議是忘記autoflush并update()直到你的算法以最快的速度運行。具體來說，您最終會得到 3000 個要更新的矩形，盡管屏幕上一次最多不會超過 15 個。你最好去掉從底部掉下來的矩形：
from random import seed, randint, choice
from graphics import *
WIDTH, HEIGHT = 800, 800
colorList = [
color_rgb(255, 170, 204),
color_rgb(255, 187, 204),
color_rgb(255, 204, 204),
color_rgb(255, 221, 204),
color_rgb(255, 238, 204)
]
def main():
seed()
win = GraphWin("Random Squares", WIDTH, HEIGHT)
win.setBackground("black")
rects = []
for _ in range(3000):
for rect in list(rects): # iterate over a shallow copy
rect.move(0, randint(10, 100))
if rect.getP1().getY() > HEIGHT:
rect.undraw()
rects.remove(rect)
x1 = randint(0, WIDTH - 5)
y1 = randint(0, 10)
rect = Rectangle(Point(x1, y1), Point(x1 + 5, y1 + 20))
rect.setFill(choice(colorList))
rect.draw(win)
rects.append(rect)
win.getMouse()
win.close()
if __name__ == '__main__':
main()
現在我們只跟蹤大約 15 個矩形，而不是數百或數千。只有在優化算法之后，才考慮autoflush性能update()是否不符合您的喜好：
def main():
seed()
win = GraphWin("Random Squares", WIDTH, HEIGHT, autoflush=False)
win.setBackground("black")
rects = []
for _ in range(3000):
for rect in list(rects): # iterate over a shallow copy
rect.move(0, randint(10, 100))
if rect.getP1().getY() > HEIGHT:
rect.undraw()
rects.remove(rect)
x1 = randint(0, WIDTH - 5)
y1 = randint(0, 10)
rect = Rectangle(Point(x1, y1), Point(x1 + 5, y1 + 20))
rect.setFill(choice(colorList))
rect.draw(win)
update()
rects.append(rect)
win.getMouse()
win.close()
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