分级聚类程序，可实现最小距离聚类法、最大距离聚类法、平均距离聚类法。,Hierarchical clustering procedure can achieve the minimum distance clustering, maximum distance clustering method, the average distance clustering method.

本文的主要贡献是以线元为基本造型单位，运用动力学原理模拟瀑布的运动轨迹[9]，结合层次包围盒技术和建立聚类树加速粒子与障碍物之间的碰撞检测，并采用逐渐淡化融合的方法绘制粒子，形成了具有真实感的实时瀑布飞溅的效果。-Contribution of this article is based on the line for basic modeling unit, use the dynamics simulation trajectories of waterfall [9], combined