风场作用下大规模真实感草地模拟

摘要

大规模草地场景的建模及实时绘制很难满足草体的逼真性以及实时性。针对以上问题，文中提出了在风场作用下基于GPU加速的大规模草地场景动态模拟方法。为真实地绘制大规模草地场景的动态效果，利用基于布告板的改进方法，建立了运算简单、草体茂盛效果真实的草体模型；同时，文中针对草体随风摆动的视觉效果设计出相应的数学模型，并利用可编程GPU对场景进行视觉效果优化。实验表明，该方法不仅能够绘制出大规模草体的逼真效果，同时对风场作用的实时变化有很好的支持。%Modeling and real-time rendering large-scale pasture scene is difficult to reflect the grass in reality and the real-time. Towards this question,a dynamic simulation method of large-scale lawn scene under the action of wind field is presented based on GPU accelera-ting. In order to depict the mass grass in dynamic,establish a grass model which is simple to operate and makes grass look more lush. In addition,design a corresponding mathematical model to realize the effect that grass swing with the wind,and optimize the scene using programmable GPU accelerating to meet visual effects better. Experiments have shown that this method is not only able to render lifelike effects of large-scale lawn scene,but also can primely support the real-time change while the grass in wind field.