请高手指点：我想做一个获取实体顶点坐标的lisp程序，想通过entget来访问。。。
我想做一个获取实体顶点坐标的lisp程序，想通过entget来访问实体数据库中的相应坐标值，对二维（如：直线）可以，对三维的却发现数据库中没有可用的信息，下面的就是一个立方体的实体数据库中的信息，不知如何去处理这些数据才能得到立方体顶点坐标呢？恳请赐教！谢谢！:-,:; {jk {rn |") (1 . "/+36,+r:&:r>++-6= {rn {rn {rn {kn |") (1 . "):-+:' {rn
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