基于OpenGL几何变换的虚拟漫游视点控制及应用

灵活自然的视点控制和精确实时的碰撞检测可以大幅提高虚拟漫游系统的真实感.探讨并计算漫游交互基本控制动作中视点位置变化,基于OpenGL中的三维几何变换实现漫游时视点控制,创建八叉树进行碰撞检测,最后在基于粒子系统的土壤可视化漫游中予以应用.漫游效果逼真、实时性强,表明所采用的方法具有一定的科研及应用价值.

Viewpoint controlling and application in virtual walkthrough based on three dimensional geometric transformations of OpenGL

Flexible-natural viewpoint controlling and accurate-real-time collision detection can improve actual performance of virtual walkthrough system. The position change of viewpoint in basic controlling action of walkthrough interaction is discussed and computed. The viewpoint controlling in walkthrough is achieved based on three dimensional geometric transformations of OpenGL. The Octree that is created to detect collision is applied in soil visual walkthrough based on particle system finally. The effect of walkthrough has vivid feeling and preferable real-time, which proves that this method has researchful and applied value to some extent.