The Expanded Turn-to-the-left-most Rule and the Application in Profile Search

LI Jin-fang; HE Han-wu; YANG Xue-rong; SUN Jian

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The Expanded Turn-to-the-left-most Rule and the Application in Profile Search

更新时间：2026-05-27

- The Expanded Turn-to-the-left-most Rule and the Application in Profile Search
- Vol. 24, Issue 2, Pages: 80-83(2007)
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- Online First：02 July 2007，
  
  Published：2007
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李晋芳, 何汉武, 杨雪荣, 孙健. 扩展的角度判别法及其在轮廓搜索中的应用[J]. 广东工业大学学报, 2007, 24(2): 80-83.

LI Jin-fang, HE Han-wu, YANG Xue-rong, et al. The Expanded Turn-to-the-left-most Rule and the Application in Profile Search[J]. 2007, 24(2): 80-83.
李晋芳, 何汉武, 杨雪荣, 孙健. 扩展的角度判别法及其在轮廓搜索中的应用[J]. 广东工业大学学报, 2007, 24(2): 80-83. DOI：

LI Jin-fang, HE Han-wu, YANG Xue-rong, et al. The Expanded Turn-to-the-left-most Rule and the Application in Profile Search[J]. 2007, 24(2): 80-83. DOI：

摘要

在角度判别法的基础上

提出了一种轮廓搜索的方法

称为扩展的角度判别法.引入了导引图元的概念

解决了原有的角度判别法在用于轮廓搜索时的不完备性.从相同的起始图元开始进行轮廓搜索时

遇到多分枝的情况下

通过导引图元的指导

可以搜索到角度判别法搜索不到的轮廓.给出了一个轮廓搜索的对比实例.

Abstract

An approach is presented to search profile in engineering drawing based on the turn-to-the-left-most rule.It is called expanded turn-to-the-left-most rule.A term named guiding-line is brought forward for the expanded rule.It could solve the incompletion in searching profile by the quondam rule.Owing to the guide-lines

all the profiles could be found

including those which couldn’t be found through the turn-to-the-left-most rule using the same first profile line.An instance is given to compare the...

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references

李晋芳,施法中. 二维视图到三维几何模型转换中的BOX显示法[J]. 计算机工程. 2005(19)

李晋芳,施法中. 商品化CAD软件中基于二维视图的三维重建模块的设计与实现[J]. 计算机辅助设计与图形学学报. 2005(04)

王耘,胡树根,孙伟宁,崔晓峰. 基于节点预处理的环搜索方法[J]. 计算机辅助设计与图形学学报. 2001(09)

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