Rendering of Vector Data on 3D Virtual Landscapes

In geographical information systems (GIS), vector data has important applications in the analysis and management of virtual landscapes. Therefore, methods that allow combined visualization of terrain and geo-spatial vector data are required. Such methods have to adapt the vector data to the terrain surface and to ensure a precise and efficient mapping. In this paper, we took the idea of the fast display, researched the vector data organization based on XML/KML standards and pre-processing, and achieved high-quality real-time seamless overlay of vector data on virtual landscapes. In addition, we mainly talked about the geometry-based and texture-based vector data overlay technology, made a performance analysis and gave a valuable conclusion, at last accomplished an efficient and accurate rendering of vector data on the three-dimensional scene.