The Design And Implementation Of DXF Parsing Library Based On JAVA

As a leading product in the industry,AutoCAD is widely used to design.However,the functions of AutoCAD which aim at solving the problems of specific industries and specific items,could not meet the special demands of the users in different fields.Therefore,with the help of AutoCAD interface,it is of great significance to customize the software.So far there are many problems between the Java and AutoCAD.On the one hand,if we use Java native interface to call the component object model or other language,it will lose many advantages of Java platform.On the another hand,there is none perfect DXF parsing library based on Java.In this context,this paper uses Java to parse DXF and offer a common parsing library for connection between AutoCAD and other systems.By this parsing library,every entity or object data you need is searched accurately.Several contents of the study are mentioned as follows: Firstly,the format of DXF is introduced and the structure and content of every section in the DXF are analyzed.Secondly,through the access to AutoCAD database,the data structure and modules in the system are designed.Besides,this paper points out the coordinate conversion method.Thirdly,the processing process of parsing is explained in detail.By reading this paper,you can know about the structure of block,the structure of dictionary and so on.Finally,after getting data from actual construction drawings by this parsing library,we use a library named Three.js to render the model.Contrast to the original image seen in AutoCAD,it will verify the completeness and accuracy.At the same time,we do the performance test between two parsing libraries and make analysis.