三维虚拟场景建模及其在Vizard环境中的应用研究

3D virture scene modeling and its application in Vizard environment

在三维虚拟场景建模时,设计者往往会忽略场景中心点的确定,导致加载到虚拟环境中的三维虚拟场景很难进行准确定位,使其无法以很好的视角进行情景复原,且在虚拟环境中一般无法直接利用鼠标调整三维虚拟场景的视角.针对上述情况,提出了一种将三维虚拟场景建模和Vizard技术相结合的虚拟环境的开发方法,即利用3DS MAX构建三维虚拟场景(文中以搭建三维书房场景为例),将搭建好的三维虚拟场景以OSGB文件格式进行存储,加载到Vizard中对其进行交互控制,实现虚拟现实.然后使用Python语言编程实现了键盘按键对三维虚拟场景的交互控制,使用者可以通过键盘按键快速的调整视角.编程实现的程序适用于调整任意导入Vizard中的场景视角.实现结果图表明新的虚拟环境开发方法在真实性、交互性和实现简易性方面都有不错的效果.

Designers tend to ignore the selection of the central point during the construction of virtual scenes, which leads to the failure of displaying the scenes with a proper visual angle. In addition, it is not directly adjust the visual angle of 3D virtual scenes with mouse. To account the above problem, this paper describes a new virtual environment development method, which combines 3D virtual scene modeling and Vizard technologies. Namely, one creates a 3D virtual scene （a 3D bookroom scene is constructed in the study as an example） using 3DS MAX, and then converts the 3D virtual scene to OSGB file format for storage, finally loads into Vizard, processes and interacts with Vizard for virtual reality. And then a Python script to enable interactive keyboard control of three-dimensional virtual scenes is proposed in the paper. One can use the keys defined in the script to quickly adjust the visual angle. The script is universally applicable to the visual angle adjustment issues for any scenes imported into Vizard. The results show that the combined approach operates with good authenticity, interactivity and easy application.