双参数曲面和一般立体模型的隐线消去算法

Hidden Line Elimination Algorithms for Biparametric Surfaces and General Cubic Model

近些年来,随着计算机图形学、计算几何和计算机辅助设计与制造技术的发展,双参数曲面和一般立体模型的隐线消去算法变得越来越重要。这是因为双参数曲面和一般立体模型能够描述更复杂的曲面模型,而非参数曲面却难以描述它们。 本文给出了双参数曲面和一般立体模型的两种隐藏线消去算法。该算法存贮量小,运行速度较快,易于加到已有的绘图程序中。本文还利用Dxy-880绘图仪给出了各种算法的实例。

With the development of computer graphics computational geometry and Computer Aided Design and Manufacture Techniques,Hidden Line Elimination Algorithms for Biparametric Surfaces and General Cubic Model have become increasingly important in recent years. This is because Biparametric Surfaces and General Cubic Model can describe some more complex surfaces and models which can hardly be described by nonparametric surfaces.In this paper,two simple efficient hidden line elimination algorithms for biparametric surface and general cubic model are described. The algorithms require minimum computer storage and can easily be added to the existing plot programs. Some examples of algorithms are given by the Dxy-880 plotter.