基于VRML的层状地质体3维建模  

3D Modeling of Stratified Geologic Body Based on VRML

作　　者：江皖[1] 

机构地区：[1]安徽理工大学测绘学院,安徽淮南232001

出　　处：《测绘与空间地理信息》2013年第12期166-167,170,共3页Geomatics & Spatial Information Technology

摘　　要：为了形象地表现层状地质体形态,本文利用VRML在虚拟环境中建立了3维地质体。根据层状地质体的实际情况,本文利用VRML中的几何形体建模节点ElevationGrid和IndexedFaceSet创建了3维地质体的虚拟现实模型。该方法利用钻孔数据获取层面数据,使用Surfer软件进行数据插值,得到网格化数据文件,用网格化文件与ElevationGrid节点相结合,模拟地质体上下表面,用IndexedFaceSet节点建立两层表面边界,从而构成一个视觉上闭合的3维实体。最后用此方法建立了层状地质体的虚拟现实模型实例。To performance the geological body shape, this paper establishes a three - dimensional geological body in a virtual environ- ment with vril. According to the actual situation of stratified geological objects, we use geometrical modeling nodes like ElevationGrid and IndexedFaceSet creating 3d geological body virtual reality model. Based on the data of borehole the method can obtain the data of strata interface, we use Surfer software to carry out data interpolation which extracts grid data file, within it combining the Elevation- Grid node, to simulate geological surface. At the same time, with IndexedFaceSet node to set up the boundary of formation on two floors in surface, so as to form a closed three - dimensional entity on the vision. Finally, an application on VR model of stratified geol- ogy body was provided.

关 键 词：虚拟现实 虚拟现实建模语言 3维地质体 IndexedFaceSet ElevationGrid 

分 类 号：P208[天文地球—地图制图学与地理信息工程]