Secondly, the feasibility of building density, floor area ratio, accessibility, buffer zone and site selection is analyzed to evaluate social, economic and environmental effects. The above two items are typical functions of GIS.
Thirdly, fast 3D modeling of large area and multi-cells, including buildings, structures, street furniture, billboards, trees, vehicles, people, etc. Generally, GIS only has two-dimensional stretching function, which is called 2.5-dimensional, not true three-dimensional. However, the popular 3Dmax 3D modeling is not competent for a large number of object modeling and real-time browsing tasks.
Fourth, real-time virtualization. We should be able to redraw the surface quickly, including responding to the changes of scene objects, skylight background, animation path, viewpoint and perspective. Theoretically, the above four problems can be solved in a GIS platform or a unified VR system, but this platform is still under development, but we can solve the problems with the help of the comprehensive integration of GIS and VR.
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