按键功能表： Space:随机变换 right:逆时针旋转 left:顺时针旋转 up:光标向下切换 down:光标向上切换 Enter:返回初始 Esc:退出...

代码说明：

按键功能表： Space:随机变换 right:逆时针旋转 left:顺时针旋转 up:光标向下切换 down:光标向上切换 Enter:返回初始 Esc:退出程序- Pressed key function table: Space: Stochastic transformation right: Counterclockwise rotation left: Clockwise rotation up: The cursor to under cuts down: The cursor upwardly cuts Enter: Returns to initial Esc: Withdrawal procedure