基于VRML及JavaScript的气垫导轨上交互式三维虚拟实验

Construction of interactive 3D virtual air-cushion track experiment based on VRML and JavaScript

VRML构造复杂三维虚拟仪器时,通常需要采用一个部件控制其他部件的运动.因此,如何实现能在网上运行的三维空间物体联动交互问题十分关键.VRML本身不能进行复杂联动交互,因而对于复杂交互操作就不能只用VRML进行.结合创建的虚拟气垫导轨上的实验,采用JavaScript编程实现了光电门位置的动态调整,滑行器振动动画等功能,最终建立了具备交互功能的三维虚拟牛顿第二定律的研究和简谐运动的研究实验环境,较好地实现了复杂运动的交互操作与联动控制.

When constructing complicated 3D interactive apparatus with VRML, the metnoo which was usually adopted was manipulating another object with a selected one. Therefore, the way to coordinate the motion of three-dimensional objects on website was crucial, but VRML itself could not realize the adjustment of the apparatus for complex interaction. In this work, we built an interactive 3D virtual experimental environment capable for the Newton second law and simple harmonic vibration experiment using the technique of JavaScript programming which could realize the real-time position controlling of the photoelectric gate, the animation of simple harmonic vibration and other functions.