Three-Dimensional Landscape Modeling Technology Based On ArcGIS

The conventional method of three-dimensional landscape modeling is used to making use of software on graphics and developing to browse three-dimensional landscape via interface on 2.5 dimensional GIS system. For ArcGIS 9.0 have been have display three-dimensional symbols, continue following traditional method is painfully and discommodiously to integrate with the function of GIS effectively. The research on landscape modeling technology is in favor of making use of the capacity of two-dimensional and three-dimensional large numbers of data recur to series software of ArcGIS. It can satisfy the needs of data edit,conversion, management and query,spatial analyst, 3D animation in the fields of urban city landscape simulator, digital city construction, city planning and so on.Based on the complexity of the data structures and models and can not unify an identical data model, the paper propose a new way for three-dimensional landscape modeling based on ArcGIS. In the end the application of 3D Landscape Modeling on YanTa area of xi'an university of science and technology by examples of the Technology of Three-dimensional Modeling based on ArcGIS is presented. The result proved that it is feasible and practical to adopt the technique scheme base on ArcGIS. More particular study content as follows:(1) Discuss the problems exist in landscape modeling. By comparing methods for implement, technique and application fields, putting forward a basic idea and ways;(2) Put forward a way of combination for landscape modeling that is importing symbol model method that have been built via interface and secondary developing method;(3) Narrate the texture making and the symbols design of three-dimensional point, line and polygon symbol. And also put forward a simple, convenience and practical method to making texture;(4) Introduce methods of making three-dimensional point symbol and texture mapping...