面向对象技术在建筑建模中的应用

BUILDING MODELING BASED UPON OBJECTS

本文针对建筑问题域，建立了对象之间存在组装、分解关系的对象模型。通过对问题域最基本需求的抽象，提出了两个反映基本需求的对象：虚面、基准点。其特点是，除了几何描述外，二者皆有灵活的拓扑描述能力，前者是墙面、空间、体的构造基础，后者是二维墙线、空间的基本构造对象。文章的最后还论述了采用面向对象的建模技术可构造更加灵活的拓扑关系。

An object oriented model of building is presented in this paper where a series of decomposition among objects is carried out.A virtual face and a datum point which embody basic semantics requirements are two low level objects.They hold not only geometric data,but also topololgy relation.The first is used to construct wall faces,spaces and solid primitives and the second constructs wall line and corner point of a space.The paper also shows that in an object oriented approach topology connection among objects is more flexible and less dependent than in the case of structurebased model.