效果如下 使用python与tkinter实现的一个简单的票据生成， 键入收款方，通过“添加明细”键入项目详细信息，生成的收据将有pdf格式保存。
Im making a game in xna where a tank has to move over a landscape. I need to be able find the bottom of the tank when it is rotated so I can make it move up and down as the player goes over the landsc
加载中,请稍侯......