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OpenFlight三维公路模型设计参数的获取

, PP. 80-83

Keywords: 交通工程,三维公路模型,OpenFlightAPI,遍历

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Abstract:

为快速获取人-车-路虚拟仿真系统中三维公路模型的平曲线、纵断面和横断面参数,在分析OpenFlight格式公路模型多级层次数据结构的基础上,建立了深度优先和广度优先结合的递归遍历计算模型,给出了利用OpenFlightAPI读取三维公路模型中平曲线半径、纵坡度、超高、缓和曲线长度以及起点、控制点和终点坐标参数的方法,开发了基于VisualC++6.0的读取程序,并在云南省保山―龙陵高速公路的运营安全评价与改善项目研究中进行了虚拟仿真应用。应用结果表明,该方法在提高建模效率的同时,使得各路段的运行帧率平均提高了1.3f/s。

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