基于CSG和B-Rep的三维地下管网参数化建模  

Parameterization Modeling of Urban Underground Pipeline Network Based on CSG and B-Rep

作　　者：蓝贵文 陶彦妤 庞立阳 冯凯文 LAN Gui-wen;TAO Yan-yu;PANG Li-yang;FENG Kai-wen(Guangxi Key Laboratory of Spatial Information and Geomatics,College of Geomatics and Geoinformation,Guilin University of Technology,Guilin 541006,China)

机构地区：[1]广西空间信息与测绘重点实验室桂林理工大学测绘地理信息学院

出　　处：《地理与地理信息科学》2019年第5期60-65,共6页Geography and Geo-Information Science

基　　金：国家自然科学基金项目(41861050、41261088);广西空间信息与测绘重点实验室主任基金项目(16-380-25-09);2018年广西壮族自治区研究生创新创业项目(YCSW2018156);广西八桂学者专项经费资助项目

摘　　要：结合结构实体几何法(Constructive Solid Geometry,CSG)与边界表示法(Boundary Representation,B-Rep)在管网建模中的优缺点,该文提出一种基于CSG/B-Rep混合数据模型的城市地下管网三维建模方法,实现了管件和管线的三维模型构建。根据不同类型管件和附属物的连接特征,计算管点模型与管线准确匹配所需的旋转参数;利用3DS Max擅长于精细建模、SuperMap便于高效构建大规模三维场景的特点,基于CSG方法和3DS Max构建了各种造型管件及附属物的精细三维模型;在此基础上利用SuperMap渲染大规模三维管网场景。以南宁市某区域地下管网为例进行三维建模,验证了该建模方法的可行性。By considering the advantages and disadvantages of constructive solid geometry (CSG) and boundary representation (B-Rep) methods,this paper proposes a hybrid CSG/B-Rep based method for modeling 3D underground pipeline network,which is used to build 3D models of pipe fittings and pipelines.According to the characteristics of how different pipe fittings and accessories being connected to the pipelines,the methods for calculating rotation parameters of the pipe fittings and accessories are discussed in this paper.As 3DS Max is excellent in detailed modeling,while SuperMap is efficient in building large-scale 3D scenes,therefore 3DS Max is used to build detailed 3D models of the pipe fittings and accessories with the CSG method,and SuperMap is used to render large-scale scenes of 3D pipeline networks.The proposed method is applied and has been proved feasible in building the 3D underground pipeline network of an area in Nanning.

关 键 词：地下管网 三维建模 参数化建模 边界表示 结构实体几何法 

分 类 号：P208[天文地球—地图制图学与地理信息工程]