四维空间中投影的可见性问题

THE VISIBILITY PROBLEM OF THE PROJECTIONS ON THE 4-DI MENSIONAL SPACE

本文论述了四维空间可见性问题。提出用“同一法”处理第一类重影点与第二类重影点的可见性。对可见性问题进行了判断并对有关情况进行了处理。这可使四维空间正投影图更清晰,更直观,效果更好。此外,本文也可为计算机绘制四维空间投影图进行了消隐处理提供有效方法与依据。

This artical discusses the visibility problem of the 4-dimensional space.It puts forwardan identical method to deal with the visibility of the first and second kind of ghost points.Thevisibility problem is judged and dealt with in this article.It makes the orthographic projec-tions more clear,more directly sensitive and more effectual.Additonally,this article alsoprovides,an efficient method and basis for hidden line elimination on computer drawing of4—dimensional space projections.