直线与平面、平面与平面相交时可见性判别的一种新方法

A New Method of Distinguishing Visibility onIntersection Straight Line and Plane or Plane and Plane

本文应用阴影透视的理论，给出了识别直线及平面空间方位的方法，从而使直线与平面、平面与平面相交时可见性的判别由抽象的平面投影问题可转化为直观的立体问题。

This paper gives the method of distinguishing straight line and plane space pasition, appliedthe theory of shadow roentgenoscopy.Theabstract problem of plane projection is converted into directly sensivesolid,when distinguishing visibility on intersection straight lineand plane or plane and plane.