Research On Web-based Graphics Data Exchange

The CAD technology is changing from traditional CAD technology to Web-based CAD technology quickly, the technology of share and exchange of product data on Web is one of the basic technologies in the process, and it is also the basic of Concurrent Engineering and globalization manufacture. This paper investigates the graphics data exchange on Web, discusses the characteristics of graphics data of AutoCAD and SVG, builds the mapping between AutoCAD object data and SVG element, designs and implements the data exchange interface.The main work and results of this paper are as follows:1. The analysis of graphics data of AutoCAD and SVG, including geometric data and property data.2. Defining graphics data sets of AutoCAD and SVG, and building the mapping between them.3. Defining file format used for data exchanging as exchange interface of AutoCAD and SVG, which establishes basic frame and data foundation for further research.4. Designing and implementing the data exchange interface. The interface is designed under the direction of Object Oriented method, and the program is implemented under the VC++ environment using ObjectARX interface of AutoCAD. The validity of study results is verified by practical transfer examples.