The Research and Application of 2D and 3D Interactive System

The disposal, modeling and visualization of 3D data are very important in the construction of digital earth. Now, one can get fine 3D model with software such as 3DMax and so on. But the 3D system is only perfect in visualization without any function of spatial analysis. The predominant software of GIS, for example, ArcGIS, or IMAGIS, provides ideal function of spatial analysis. One also can establish 3D models in the software, which are deficient in vividity. In addition, roving in the 3D system, the primary users always get lost without globe field of vision. The paper solved the problem by the 2D and 3D Interactive System. Based on the mature 3D software - SketchUp, the researcher got the elementary 3D model as the item input to the symbol database. Thus, the new system can produce 3D features in batches. The system chose ArcEngine as the developed tool. The 2D system played a role of EyeView. The basic functions, such as display, edit - add, delete took effect in both 2D and 3D system. Besides, the result of spatial analysis acquired in 2D system can be reflected in 3D system simultaneity. The case study was the 2D and 3D Interactive System of the ShanDong Jianzhu campus. The interface of each function has been shown at the end of the paper.