摘要
随着建筑信息模型的应用越来越深入,不同专业领域通过多种软件之间简单模型转换导致语义信息部分缺失而难以全面共享,无法实现BIM技术真正的含义。一种软件对于数据标准的支持实际上就是支持对数据的读写,IFC标准作为BIM领域的主要数据模型标准,具有多种几何表达方式,可面向设计应用,含有丰富的建筑语义信息,因而需要通过构建标准化的数据接口来实现BIM的价值。本文基于IFC标准,深入研究IFC构件信息的几何形状表达方法以及构件信息的分解,通过局部坐标转换得到世界坐标系下构件的点坐标信息,最终在三维图像引擎Direct X 11中通过Delaunay三角剖分生成表面模型,为后续室内导航奠定基础。实验证明,本文深入研究的解析方法和可视化技术路线切实可行,期望为从事相关工作的建筑信息化科研人员提供有效参考。
With the further application of BIM, it is hard for different fields to share information in the process of transforming models between multiple software. At the same time, the loss of semantic information make it difficult to achieve real BIM technology. IFC, considered as the standard data format of BIM field, contains a variety of geometric expressions and rich building semantic information and can be applied to oriented design. As a software supports reading and writing access to all supported data sources, IFC standards are required to build standardized data interfaces to realize the value of BIM. This paper focuses on geometric expressions and data parsing of structure components based on IFC standard. Space coordinate transformation is also implemented to obtain point coordinates of IFC components. Finally, the surface model of IFC data sets is generated based on Delaunay Triangulation by using DirectX 11. Experiments have shown that the data parsing method and the visualization proposed are feasible and provide good references for BIM researchers.
出处
《工程勘察》
2018年第2期41-45,66,共6页
Geotechnical Investigation & Surveying
基金
"十三五"国家重点研发计划项目(No.2016YFC0702107)
北京市青年拔尖人才培育计划项目(CIT&TCD201404070)
国家自然科学基金(No.41601409
No.41501495
No.40801159
No.41301429)
北京市自然科学基金(No.8142014)
关键词
IFC
BIM
几何信息
三角剖分
三维可视化
IFC
BIM
geometry information
triangular subdivision
3D visualization
