| 基于几何原理的多边形消隐算法 |
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| 引用本文： | 卢章平,赵跃平.基于几何原理的多边形消隐算法[J].江苏大学学报(自然科学版),1999(4). |
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| 作者姓名： | 卢章平 赵跃平 |
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| 作者单位： | 江苏理工大学机械工程学院(卢章平)，江阴市技工学校(赵跃平) |
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| 基金项目： | 机械工业部教育司科技基金 |
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| 摘 要： | 在分析直线与平面、平面与平面相对位置的基础上，利用重影点的概念，提出了重影点度数、广义多边形的概念和空间多个多边形平面边界投影后交的可见性偶边性理论，只需判别多边形投影交环上一个重影点的可见性，即可根据投影交环的偶边性依次判别出所有多边形边的可见性，并提出了基于几何原理的多边形消隐算法，与传统的消隐算法相比，具有算法简单可靠、占据空间小、计算速度快等优点
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| 关 键 词： | 几何学 几何造型／消隐算法 窗口裁剪 |
The Algorithm of Hidden Lines Elemination of Polygon Based on Geometric Principle |
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| Lu Zhangping.The Algorithm of Hidden Lines Elemination of Polygon Based on Geometric Principle[J].Journal of Jiangsu University:Natural Science Edition,1999(4). |
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| Authors: | Lu Zhangping |
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| Abstract: | Based on analyzing the relative positions of surface to
surface and line to surface,the authors present the degree value of projective point,the concept
of extended polygon and the theory of even edges of projective intersective loop of polygon
planes by the concept of double projective point.Using geometric methods to judge the visual
property of double projective point in the intersection loop,the visual property of polygon can be
determined by the even edges theory.Compared with the traditional algorithm,the presented
algorithm of hidden lines elimination has advantages of simplicity with high reliablity,high
speed and lower stock space. |
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| Keywords: | geometry geometric modeling/algorithm of hidden line elimination clipping of window |
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