基于VB和VRML的虚拟仿真实验系统

结合现有的工作描述了虚拟仿真实验系统（VSLS），阐述了该系统的功能特点和结构模式，对实现该系统的关键技术进行了分析和总结，包括三维场景建模方法、VRML访问实时数据库以及交互式虚拟场景的开发，提出了利用可视化编程语言VB开发一个实现复杂交互动作功能的平台，完成静态VRML文件到动态交互式虚拟文件的转换，重点解决了三维场景模型建立及几何变换、数据库设计及性能优化、三维虚拟实验场景动态组合、虚拟实验场景访问数据库和虚拟实验场景交互性实现等关键技术。

Virtual simulation lab system based on VB and VRML

Architecture of the virtual simulation lab system is presented with its usability being verified. The implementation issues including object modeling, 3D Scene building, the way that VRML connect to the real-time database, the design of interactive virtual 3D Scene, are discussed. Then a platform that can realize complex virtual interaction is developed by the visual programming language VB, which provides automatic transformation from static VRML file to a dynamic interactive virtual file. The following key techniques include 3D scene model building and geometrical transforming, database designing and its optimizing, 3D virtual laboratory scenes combining dynamically, the realization of database accessing and interacting of virtual laboratory scenes. These techniques were solved during the developing of the whole system.