随着网络速度提高等的科技发展，人们并不满足用二维地图来看世界，因此，生产了大量的三维模型数据，现大部分采用在浏览器端加载插件的方式解决精细度较高的模型数据在浏览器中流畅地显示问题，但用户体验并不算好。为了提高浏览速度，本文研究了基于WebGL的三维WebGIS场景构成，模型数据结构及其加载方法，本文根据已有的空间数据索引，提出了一种面向元数据的三维空间数据模型组织方法，并在浏览器端将元数据中模型数据成功加载，用户体验良好。%The practical needs with the technological development such as network speeds increase , people are not satisfied with the two-dimensional map view the world.Therefore it produced a large number of 3D model data,and how the browser displays the high degree of fine model data smoothly , the most use the browser to load plug -in way to solve it, but the user experience is not good .To improve browsing speed , this paper scene configuration of 3D WebGIS based on WebGL , model data structure and its loading method . The paper proposed a method of 3D spatial data model organization for metadata based on the existing spatial data index , and in the browser the metadata model data loaded successfully , the user experience is good .
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