一种大场景环境下降雪和积雪仿真的新方法

在分析已有的降雪和积雪模拟方法的基础上,提出了一种大场景环境下降雪和积雪模拟的新方法。将降雪和积雪过程看成雪景模拟的两个阶段,分别用不同的方法进行模拟。在降雪方面,引入粒子的旋转,粒子动态纹理和动态颜色等,提高了降雪模拟的真实性和灵活性;在积雪方面,引入噪声技术,解决了已有积雪模拟方法不能用于大场景模拟的问题。实验表明,降雪积雪模拟方法模拟效果真实,实时性良好,适合大场景尤其是飞行模拟系统中。

A New Approach for Simulation of Snow Falling and Accumulating for Large-scale Terrain

Based on the analysis of traditional simulation methods,this paper presents a new approach for simulation of snow falling and accumulating in large-scale terrain.The snow simulation is divided into two stages-falling and accumulating.In the former stage,rotation,dynamic texture,and dynamic color of particles are taken into account,which greatly improves the reality of simulation.In the later stage,image noise is introduced to a large-scale terrain, which solves the problem that the traditional methods cannot be scaled up to the large-scale terrain.Experiment shows this method improves the in snow simulation,keeps real-time,and adapts to the large-scale terrain,especially for the scene with flight simulation.