WebGL在线动态地图服务框架设计
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摘要
针对在线动态地图的交互性强、制图过程灵活、数据复杂多样、受众面广等特点及优势,本文基于WebGL技术设计了一种在线动态地图服务架构。该架构通过设计面向海量矢量数据的在线地图数据模型,定义在线地图切片的存储结构,并充分利用计算机硬件加速能力,实现了海量矢量切片数据的快速可视化和动态更新。为检验方法的可行性,利用该框架研发了某县的"多规合一"地理信息服务平台,结果表明,该框架提升了在线动态地图平台的实用性和操作性,为在线动态地图服务提供了可靠的理论和技术支撑。
Strong interactive features,flexible mapping process,complex and diverse data,and wide audiences for online dynamic maps,This paper designs an online dynamic map service architecture based on WebGL technology.This architecture defines the online map data model for massive vector data,defines the storage structure of the online map slice,and makes full use of the computer hardware acceleration capability to achieve rapid visualization and dynamic update of massive vector slice data.To test the feasibility of the method,this framework was used to develop a"multi-information geographic information service platform"in a county,The results show that the framework improves the practicality and operability of the online dynamic map platform and provides reliable theoretical and technical support for online dynamic map services.
Strong interactive features,flexible mapping process,complex and diverse data,and wide audiences for online dynamic maps,This paper designs an online dynamic map service architecture based on WebGL technology.This architecture defines the online map data model for massive vector data,defines the storage structure of the online map slice,and makes full use of the computer hardware acceleration capability to achieve rapid visualization and dynamic update of massive vector slice data.To test the feasibility of the method,this framework was used to develop a"multi-information geographic information service platform"in a county,The results show that the framework improves the practicality and operability of the online dynamic map platform and provides reliable theoretical and technical support for online dynamic map services.
引文
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[15] MATSUDA K,LEA R. Web GL programming guide[M].[S.l.]:Publishing House of Electronics Industry,2014:63-78.
[2]廖克.中国地图学发展的回顾与展望[J].测绘学报,2017,46(10):1517-1525.
[3]王家耀,成毅.论地图学的属性和地图的价值[J].测绘学报,2015,44(3):237-241.
[4]龚健雅,耿晶,吴华意.地理空间知识服务概论[J].武汉大学学报(信息科学版),2014,39(8):883-890.
[5] ANTONIOU V,MORLEY J,HAKLAY M.Tiled vectors:a method for vector transmission over the web[C]∥International Symposium on Web and Waveless Geographical Information System.[S.l.]:Springer Berlin Heidelberg,2009,5886:56-71.
[6] LI L,HU W,ZHU H,et al.Tiled vector data model for the geographical features of symbolized map[J]. Plos One,2017,12(5):e0176387.
[7]陈举平,丁建勋.矢量瓦片地图关键技术研究[J].地理空间信息,2017,15(8):44-47.
[8]孙岩松.基于矢量瓦片的Web电子海图研究[D].大连:大连海事大学,2017.
[9]欧阳峰,龚桂荣,何列松.面向Web GL的矢量数据三维绘制技术[J].测绘科学技术学报,2016,33(6):635-638.
[10]郑顾平,白若林.基于Web GL的动态地形实时绘制[J].软件导刊,2017(12):202-204.
[11] NORDAN R P V. An investigation of potential methods for topology preservation in interactive vector tile map applications[J]. Department of Civil&Transport Engineering,2012,59(1):230-235.
[12]任福,杜清运.智慧城市语境下在线专题制图模式[J].测绘科学,2014,39(8):50-52.
[13]章永志.顾及我国地理特点的全球空间信息多级网格理论与关键技术研究[D].武汉:华中科技大学,2014.
[14]谢贤博,聂芸,邓红艳,等.基于Web GL的Canvas元素2D绘制加速[J].软件,2016,37(12):146-152.
[15] MATSUDA K,LEA R. Web GL programming guide[M].[S.l.]:Publishing House of Electronics Industry,2014:63-78.