摘要： 为快速绘制具有真实感的大规模虚拟森林场景，在分析虚拟森林场景仿真特点的基础上，提出面向虚拟森林仿真多层场景引擎的总体结构，对该场景引擎中的实时地形生成技术、地形模型的简化算法和渲染加速等关键技术展开研究，开发了虚拟森林仿真系统。应用结果表明，面向虚拟森林仿真的多层场景引擎有助于提高复杂森林场景的绘制效率，能较好地满足用户进行实时漫游和交互控制的需求。

关键词: 场景引擎, 多细节层次, 虚拟森林

Abstract: In order to render the complicated and large-scale scene of virtual forest rapidly, this paper proposes a framework of the multiple layer scene engine for the virtual forest after analyzing the characteristic of the virtual forest simulation. Some key technologies of the multiple layer scene engine, such as the multi-resolution terrain generation and the algorithm of model simplification are presented. The virtual forest system is implemented and the multiple layer scene engine is applied in this system. Application result shows that the multiple layer scene engine can increase the efficiency of rendering the virtual forest and meet the demand of real time cruise in the virtual forest.

Key words: scene engine, multi-LOD, virtual forest

中图分类号: 

• TP391