Support for create 3D computer graphics images in GIS systems using externals renders algorithm.

Abstract

Browsing the possibilities posed by GIS and CAD programs in the modeling analysis results we can find many similarities and differences. Features arise from aims for which these types of programs have been developed. Goal of GIS software is to do different types of spatial analysis. A secondary aim is to do visualization of the results generated. A secondary aim is to doing visualization of the results generated. CAD software is taking data presentation proposed as an overriding goal, however, analysis tools, topology and relationship to the database are limited to special overlays to the main program or did not exist. Knowing how to do the main task of particular programs we can say that the CAD software is better suited for the visualization of data than GIS applications.We will attempt to analyze possibility of these two types of software with regard to ArcGIS Version 10 and CAD graphics software Cinema4D R13.For visualization in the program ArcGIS we can use two 3D environments: ArcGlobe and ArcScene. They are designed for different uses. After starting ArcGlobe application, we can see the globe, suggests to us, that all analysis and visualization will involve a large area of land. The data can be presented on a sphere Earth. ArcScene is designed for analysis and visualization covering a small area of land. Data are presented on the local reference plane. Differences also include data that we can use for analysis and visualization. In ArcGlobe, all data can be displayed in the specified simplification, depending on the magnification. This eliminates the problem of overloading the computer memory, we do not have to resign from less important data available. In ArcScene, all available data are automatically stored in the computer memory, we have quick access to them. The downside of