层次建模技术在火炮虚拟现实系统中的应用

Application of Hierarchical Modeling Technology in Gun Virtual Reality System

建立了一种层次结构的数据模型并将其应用于火炮虚拟现实系统中。为了继承已有的三维实体模型,减少复杂建模的工作量,根据三维实体模型和虚拟现实模型的特点,建立了双层次结构的火炮模型。整个火炮模型分两层,实体层模型用于火炮的结构设计与优化,多边形网格层模型用于满足视景仿真与虚拟场景中的交互性。在此基础上,完成了某自行火炮的发射动力学仿真,并使仿真结果在虚拟场景中得到体现。结果表明,整个数据模型不仅可以精确地表示火炮实体,还能够满足虚拟场景的实时可视化要求。

A hierarchical structure data model was set up. The model was applied to gun virtual reality system. In order to make full use of 3D solid models and reduce the workload of complicated modeling, gun model of dual hierarchical structure was established according to the characteristics of 3D solid models and virtual reality model. The data model of gun was consisted of two levels, the solid model level was used for structural design and optimization. The polygon model level was used to meet requirements of real-time interactions of visualization simulation in a VR environment. On the basis of the research, launching dynamics simulation and real time visualization of self-propelled gun were performed. The results showed that the whole data model can not only provide precise object definition, but also support to meet the requirements of real time visualization and interaction in the virtual reality environment.