任意观
任意观
利用视点变换方程生成目标视点；
A popup window that can be used to display an arbitrary view. The popup Windows is a floating container that appears on top of the current activity.一个弹出窗口，可以用来显示一个任意的看法。弹出窗口是一个浮动的容器，对当前活动顶部。
A feature called a view allows you to create an arbitrary relation between documents that is not actually defined in the database itself.一个称为视图的特性允许您为没有在数据库中定义的文档创建一种任意关系。
