brep

An Efficient and Reliable Hidden Line Removing Algorithm Based on CSG + Brep

基于CSG+Brep模式的高效可靠隐藏线消除算法

To establish an automatic system to analyze injection product forming performance , design features of injection product should be recognized from product 's Brep model .

为了建立自动化的注塑产品成型性分析系统，要根据注塑产品的BRep模型自动提取其设计特征。

The conversion algorithm is improved by utilizing " Conversion Feature "; and the new algorithm is called improved " BREP → Half-Space Representation " conversion algorithm .

通过把转换特征用于BREP→半空间表示转换算法中，改进了转换算法的性能，从而得到改进的BREP→半空间表示转换算法。

In order to generate the model of 3D constraint system automatically , an approach based on translating the BREP structure and extracting the essential constraints in feature definition is presented .

通过转换边界表示和提取特征中的本质约束信息，自动生成三维陈述式约束模型。

The BREP → CSG conversion algorithm is the core in MCAM , and it is possible to improve the algorithm using3D feature recognition technology .

CSG转换算法是MCAM的核心算法，借助三维特征识别技术能改进该转换算法。

The boundary representation model ( Brep ) and constructive solid geometry ( CSG ), which are the two main solid representation , cannot satisfy the real need of practical designs .

目前实体造型中的主要表示方法，即边界模型及构造模型，由于各自特定的结构，无法较好地满足实际工程的需要。

The paper discusses the necessity and possibility of introducing 3D feature recognition technology and introduces the improved BREP → CSG conversion algorithm based on feature conversion . The effect of the algorithm is described as well .

讨论了在MCAM中引入特征识别技术的必要性和可能性，并介绍了MCAM中基于转换特征的改进BREP→CSG转换算法及其效果。

[ 2 ] Based on the intensive study on the related theory and previous work on " BREP → CSG " Conversion , the thesis presents a new conversion algorithm : " BREP → Half Space Representation " Conversion based on Decomposition .

[2]通过研究相关理论，总结、分析现有的关于BREP→CSG转换算法的研究成果，本文提出了基于分解的BREP→半空间表示转换算法。