基于智能手机的工程图学虚拟模型库的研究与实现

针对基于PC 的工程图学虚拟模型库在使用空间和时间的限制，论文对用于工程图学移动虚拟模型库进行了研究。设计了模型库系统结构，分析研究了智能手机的操作系统，选择了虚拟模型库的开发及运行平台。通过分析Direct3D Mobile 中Mesh 类的图元绘制方式、数据需求和VRML97 的数据格式，设计了VRML 的文件解析类，实现了移动设备上的VRML 模型的3D 浏览器，实现了基于智能手机的工程图学虚拟模型库的设计。该系统提高了虚拟模型库的实用性，成功地拓展了虚拟模型库的使用空间和时间。

The library of virtual model of engineering graphics based on smart phone

A virtual model library of engineering graphics is established to solve the problemof the time and space limit to the use of existing virtual model library. The model library systemstructure is designed, the mobile device operating system is analyzed, and the development andoperation platform of the virtual model library is determined. Based on the analysis of theprimitive drawing method of the class of Mesh, its data needs and VRML97 data format, thedocument analytical class of VRML is designed. The 3D browser of VRML model is designed onthe mobile device. The virtual model library of engineering graphics based on mobile device isrealized. The system improves the practicability of the virtual model library, successfully expandspace and time in use of the virtual model.