点在八个卦角中的投影分析

Analysis on Point in Projection of Eight Octants

介绍了空间任意一点在由三投影面体系所构成的八个卦角中的投影特点 .即正投影、水平投影和侧投影分别在八个空间区域中的投影 ,并且举例说明其投影的求作方法 ,同时也指出了八个区域中的投影的异同 .

In this article,the author introduces the characteristics of eight octants hat forms by three projective faces a casual point in space,that is orthographil projection horizontal projection,and lateral projection,and gives some methods that make these projections.