基于OSG林地可视化系统设计与实现

Design and Implementation of Forest Visualization System Based on OpenSceneGraph

森林、树木和花卉等植被实时可视化仿真是复杂虚拟园林环境中的重要组成部分。论文基于OpenSceneGraph(OSG)和实时建模工具MultiGen Creator(Creator)设计并实现了林分场景可视化系统。重点介绍了系统实现的框架和技术流程,并对如何在Creator中建立模型的层次结构关系进行了分析与研究。同时对该系统中使用的关键技术,如粒子系统、漫游设计和碰撞检测等实现方法进行了介绍。最后利用该方法对北京市八达岭地区林分场景进行了可视化模拟,模拟的场景逼真、自然,能满足用户实时交互的需要。

In this paper,a forestry simulation system is designed,which is based on the OpenSceneGraph(OSG) and real-time modeling software MultiGen Creator(Creator).It provides a framework of real-time tree scenic rendering and modeling.Tree and plant are modeled by Creator.And,we also introduce the technology of particle system,walkthrough and collision detection etc in the system.At last,the scene of BeiJing Ba Da Ling forest is rendered by using the OSG system.It can meet the requirement of real-time scene walkthrough.