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碰撞检测技术的研究摘要实时精确的碰撞检测对于提高虚拟环境的真实性、增强虚拟环境的沉浸感有着至关重要的作用。该文对碰撞检测相关技术进行了深入的研究,主要包括以下几个方面的内容：首先介绍了虚拟现实技术的发展及现状、碰撞检测的研究现状；然后简单介绍了碰撞检测一些基础理论知识，着重介绍常用的碰撞检测算法。紧接着，简单介绍了OpenGL编程的基础知识和面向对象编程的特点。在碰撞检测算法的应用中，运用OBB包围盒层次树的碰撞检测算法，提出了一种一般多面体间碰撞检测的可行性方案，并用软件对该方案进行实现，同时指出该方案的优缺点。最后,对全文进行了总结,并指出今后的研究方向。关键词：虚拟现实碰撞检测包围盒层次树OBBSTUDYANDIMPLEMENTATIONONCOLLISIONDETECTIONTECNOLOGYOFVIRTUALREALITYAbstractReal-timeandaccuratecollisiondetectionisveryimportanttoimproverealityandenhanceillusionofimmersionforvirtualenvironment.Thispaperstudiesthetechniqueofcollisiondetectiondeeply.Itcontainsthefollowingparts:Firstly,thispaperreviewsrecentresearchoncollisiondetectionfield.Thenitintroducessomebasicknowledgeandemphasizesonintroduceofcollisiondetectionalgorithm.Next,itintroducesOpenGLandOriented-objectlanguageprogramcharacter.Incollisiondetectionimplementationchapter,aschemeofcollisiondetectionbetweengeneralpolyhedronispresentedbyusingboundinghierarchyvolumealgorithm.Themethodisimplementedbyvc6.0.Anditanalysesadvantageanddisadvantageofthemethod.Finally,theconclusionisdrawnandtheworkoffutureresearchispresented.KEYWORDS:virtualrealitycollisiondetectionboundinghierarchyvolumeOBB目录第一章绪论.........................................................................11.1虚拟现实技术发展及现状............................................................11.1.1虚拟现实的特点...............................................................11.1.2国内外虚拟现实技术的研究状况..................................................21.2碰撞检测的研究现状................................................................31.2.1意义及特点....................................................................31.2.2碰撞检测的研究现状............................................................41.3论文的工作和组织结构..............................................................6第二章碰撞检测理论...................................................................82.1碰撞的定义[3]......................................................................82.2碰撞检测的模型类别................................................................82.3碰撞检测的场景特征[2]...............................................................92.4碰撞检测技术的基本原理............................................................9第三章碰撞检测算法..................................................................113.1空间剖分法.......................................................................113.2包围盒层次树法...................................................................123.2.1包围盒形状的设计准则.........................................................133.2.2包围盒类型...................................................................133.3基于特征的距离计算增量算法.......................................................163.3.1基本概念.....................................................................163.3.2Lin-Canny算法概述...........................................................193.3.3适应性准则...................................................................20第四章编程基础理论..................................................................254.1OPENGL编程基础...................................................................254.1.1OpenGL基本特点..............................................................254.1.2OpenGL实现..................................................................274.1.3OpenGL图形绘制..............................................................284.1.4OpenGL光照处理..............................................................294.1.5OpenGL纹理映射..............................................................304.1.6深度测试.....................................................................324.2面向对象的编程...................................................................324.3OPENGL编程环境的设置.............................................................33第五章碰撞检测算法的应用............................................................355.1物体建模........................................................................355.2场景绘制........................................................................385.3碰撞检测算法的应用...............................................................415.3.1基础理论...................................................................415.3.2碰撞检测的实现过程..........................................................435.3.4用户交互.....................................................................505.4本程序的优缺点...................................................................52第六章总结与展望....................................................................54主要参考文献......................................................................55..................................................................................................................................................................................--1第一章绪论1.1虚拟现实技术发展及现状1.1.1虚拟现实的特点自20世纪90年代初以来，虚拟现实技术一直是信息领域研究、开发和应用的热点方向之一。虚拟现实（VirtualReality）,也称为“人工现实”或“临境”技术，是多媒体发展的更高境界，虚拟现实以更加高级的集成化和交互性，给用户以更加逼真的体验，可广泛应用在模拟训练、科学可视化等领域，将是今后十分活跃的技术课题。虚拟现实就是用计算机技术生成一个逼真的，集听、视、触及嗅觉为一体的感觉世界，用户以人的自然技能与虚拟现实交互考察，包含三层意思：[1]1)虚拟实体是用计算机来生成的一个逼真的实体，“逼真”就是要达到三维视觉，甚至其他三维感觉。2)用户可以通过人的自然技能（如头和眼的转动、手势等其他身体动作）与环境交互。3)虚拟现实往往要借助于一些三维传感设备来完成交互动作，如头盔立体显示、数据手套、数据服装、三维鼠标