基于OGRE粒子系统的喷泉模拟

粒子系统在计算机图形学中占有至关重要的地位,被用于实时模拟自然景物和现象中.在粒子系统的基本理论结构上研究了面向对象的图形渲染引擎（OGRE）粒子系统的核心原理以及粒子脚本语言.提出了一种基于OGRE粒子系统的喷泉模拟方法,在该图形渲染引擎下实现了多种喷泉效果.使用这种简本语言使程序员更容易开发,大大提高了喷泉模拟的开发速度和开发效率.     

A GIS-Based 3D Simulation for Occupant Evacuation in a Building

The evacuation efficiency of building plans is of obvious importance to the public safety. The complexity of building plans, however, makes it difficult for the efficiency evaluation. This paper presents a computational model AutoEscape, which can simulate the evacuation process for any given occupant distribu-tion in buildings. Designed as an extensible multi-level structure, the model constructs the geometry level and occupant level and establishes the interactions between levels. The GIS-based environmental analysis is realized to automatically generate the geometric representation and formulate the cognition of agents. The multi-agent based technology is employed to simulate the crowd behaviors with autonomously acting individuals. A visualization component, which provides 3D free observations for the simulation process, is developed on the platform of OGRE and integrated into the system interface in form of ActiveX control. Finally, a case study has been conducted and the results have been compared with the results of an existing model to show the reliability and capacity of AutoEscape simulation.     

GPU结合OGRE技术在红外场景仿真中的应用研究

针对红外场景仿真实际的需求,在梳理OGRE三维渲染引擎以及图像处理器GPU技术特点的基础上,对GPU结合OGRE技术实现红外场景仿真的可能性做了全面的技术分析,并详细介绍了三维场景建模、场景数据组织形式、数据格式选择、红外场景仿真实时性的解决办法等四个实际应用的技术要点.最后通过实拍图和仿真生成图的比对,证明该方法的有效性.     

舞台灯光虚拟效果的设计与实现

研究运用3D引擎OGRE来实际模拟舞台灯光虚拟效果,通过虚拟建模以及通过渲染引擎对舞台和灯光的渲染,来模拟现实中的舞台和灯光。本文主要实现了以下两个方面,一是运用3D引擎OGRE来实际模拟舞台灯光虚拟效果,二是通过CEGUI(Crazy Eddie’s Gui System)系统给用户提供实时的交互功能。通过OGRE渲染引擎实现舞台和灯光的渲染,可以逼真的模拟现实中的舞台和灯光。而通过实时交互功能,用户能方便的模拟灯的增减,灯光的亮度、色度的改变,灯光的移动和旋转。同时实现舞台烟雾,舞台粒子系统等效果。