基于VML的工程图形发布方法的研究  

Study of Release of Engineering Drawings Based on VML

作　　者：赵建国[1] 魏青锋[1] 

机构地区：[1]郑州大学机械工程学院,郑州450001

出　　处：《煤矿机械》2011年第9期238-241,共4页Coal Mine Machinery

摘　　要：研究了AutoCAD图形向VML的Web矢量图形的转换方法。在分析了DXF图形文件存储结构的基础上,建立了图元从DXF到VML的映射关系,提出了图层、坐标系、线宽、线型等图形信息的转换方案。基于VB.NET和JavaScript语言实现了DXF文件的信息提取和IE上矢量图形的动态生成。实例结果表明,该方法不但可以有效地保留图元信息,而且缩放、旋转等变换不影响图象质量,生成的文件小,处理速度快。对构建工程图形的网络服务具有重要的现实意义。Researched conversion method of AutoCAD graphics to VML vector graphics on Web. On basis of analysis of structure of DXF files, a pixel mapping from DXF to VML was established. During conversion, some solutions were advanced to deal with some graphic information such as layer, coordi- nate, line type and so on. Information extraction from DXF file and dynamically generation of vector graphics were based on VB.NET and JavaScript programming languages. The result shows this method can preserve pixel information effectively, and quality is not affected when scaling and rotating. The size of generated file is small and processing speed is fast. It＇s significant for building network services of engineering drawings.

关 键 词：矢量图形 格式转换 DXF VML 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]