中文说明：实现HKS代码，有不少做三维形状分析的都可以用到，主要用来进行形状的检索，形状的匹配，HKS可以提取较好的特征，完成上述形状分析。
English Description：
Implementation of HKS code, there are many do 3D shape analysis can be used, mainly used for shape retrieval, shape matching, HKS can extract better features to complete the above shape analysis.