Research On 3D Landscape Modeling Of Digital Jiaozuo Based On AutoCAD And 3DMAX

The city serves as an important residence of human beings, its development of the city is accompanied with the production, dissemination and development of human civilization. Especially in today's information technology stage, the status of the city will be more and prominent, and the role of the city will be more and more obvious. The issue of how to build a city`s 3D landscape model, so that the 3D City Modeling and simulation can be displayed well on a computer as well as the seamless connection between attribute and spatial geometry has become the focus of research in the field of Digital City(Digital City). Giving full play to the advantages of Auto CAD and 3DMAX software, combined with the second development of GIS, has provided the possibility of digital city`s 3D landscape platform.The construction of the three-dimensional landscape model is the most important work of digital city system. This paper focuses on the construction method of three-dimensional landscape of digital Jiaozuo system. Firstly, this paper uses second development tool Object ARX of Auto CAD 2008 to create the CAD real time expansion module "LBQ_Swift Map1.arx", to achieve these 3D-Entity Model of the construction fast in Digital City, which is also called the white model. Secondly, the models constructed by Auto CAD 2008 software 3DMAX are imported into 3DMAX software to create the 3D fine model, which are characteristics of Jiaozuo landmark building, such as government buildings, schools, large hotels, high-rise residential areas, etc. Top images of building model are obtained as the top surface texture from the high precision remote sensing images by the technologies of two dimensional GIS and Python scripting language. And then, the fast texture mapping can be achieved by a 3DMAX fast map scroll bar created by a full use of the MAXScript tool. Not only it reduces the workload, but also effectively solves the contradiction between "authenticity" and "real time". Finally, based on the principle of system development and system functional requirements, the overall design of "digital Jiaozuo 3D landscape system" is carried out when the digital city 3D scene model is already constructed, which performs the functions of scene roaming, object attribute inquiry, measurement design, spatial analysis and planning analysis.In this paper, we get a quick access to 3D-Entity modeling and texture mapping based on the traditional method using Auto CAD and 3DMAX software. This method has the advantages of high precision and efficiency, which also provides reference for the 3D modeling technology. At the same time, the establishment of the digital Jiaozuo 3D landscape system provides reference to the technology of three-dimensional modeling, which not only supports the digital platform management of all walks of life and intuitive three-dimensional information service for urban planning, but also provides an intuitive three-dimensional information service for urban planning, construction and management, and effectively improves the level of urban information utilization and sharing.