摘要
本文首先提出了一种视线交点法消隐原理。然后针对复杂形体投影特点，给出了一种消除复杂形体隐藏线的新方法。该方法的特点是将复杂形体分解成若干个基本凸体，并将凸体的外围线框找出，同时将待消隐线段与外围线框求交，并用交点将待消隐线段分解成若干段，每一段采用视线交点法消隐原理测试其可见性，从而达到对待消隐线段消隐的目的。
This paper presents a testing principle for intersect of sight line and a new method of eliminating hidden lines for complex object. The distinguishing feature of the new method is that a complex object can be decomposed to several convex parts of the body, Then, the periphery of projection for the convex part of the body is found. At the same time, the intersects of the line to be eliminated and the periphery of projection for the convex part of the body is sought. The line to be eliminated is divided by the intersects. The sight of the lines is tested. Last, the projection of eliminating hidden lines for complex object is obtianed.
出处
《南昌航空工业学院学报》
CAS
1998年第1期22-27,共6页
Journal of Nanchang Institute of Aeronautical Technology（Natural Science Edition）
基金
国家自然科学基金
关键词
复杂形体
消隐
凸体
外围线框
计算机图学
CAD
complex object,hiden lines elimination,convex part of the body,periphery of projection
