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Underground pipe network of modern production and life of a critical infrastructure , responsible for information transmission, energy , transportation and other basic work . Thematic information systems in the pipeline , due mostly buried pipelines , the lack of two-dimensional graphical display intuitive , it is difficult to conduct underground cognitive spatial arrangement , therefore, according to the vector map on the pipe network construction and maintenance , it will the inconvenience caused by work with three-dimensional graphics display can be a good solution to these problems. In this paper, a comprehensive summary and analysis of progress , based on the elaborate underground pipe network 3D visualization fundamental issues , noting that the idea of ??this study . This article discusses the common spatial data indexing structure , emphatically introduced based on R- tree spatial index structure and describes the use of underground pipe network database to store data to establish the characteristics of spatial data indexing method . This paper presents the pipe network topology of expression. Expression of the pipe network topology can effectively organize pipelines, device data, to facilitate pipe network data query and manipulate , to provide a basis for subsequent applications . The basic idea is abstracted into the pipe network graph structure , the device abstraction of vertices in the graph , the pipeline abstracted as edges in the graph . And implemented based on Boost Graph Library (BGL) pipe network topology of expression. This realization VTK -based three-dimensional pipe network system . Pipe network is divided into three parts of the display , first, the topological structure of the internal data structure conversion VTK , second pipeline expression and visualization methods , the third device and the visualization of expression . In this study, three-dimensional display line will be displayed as the tubes , the tubes made ??of the generation algorithm, the device on the corresponding spatial position and conduct appropriate zoom display , expression proposed classification of the device , load and display method . And analysis of three-dimensional display interactive process to improve the speed and user experience approach.
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