用重影线法求解两个平面立体的相贯线

Solvesing the Line with the Two-dimensional Intersection in Overlapped Projection Lines

提出了用重影线法求解两个平面立体的相贯线并判断可见性的新方法.对两条直线在某投影面上发生重影的现象进行分析,从空间角度认识其几何位置,由此得出重影线的定义.将其加以扩展,应用求解两个平面立体的相贯线的问题上,可以很快得出相贯线并判断可见性.

This paper presents a three- dimensional planar projection lines method of two intersecting lines and judged visibility the new methods. It is in a straight - line projection of the two surface analysis of the phenomenon occurred in the film, from its perspective in geometric space, which leads to the definition of affected lines. Will be expanded its use to solve the two- dimensional plane intersecting line. Intersecting lines can be drawn quickly and judge visibility.