这段代码功能是显示VRML格式文件，采用Opengl显示列表，平滑分割3D三角形网格-This code function is shown VRML format used Opengl display list, Smoothing segmentation 3 D triangular mesh

表面平滑Mesh 拉普拉斯光顺 三角形网格 近似高斯曲率-Surface Quality and Smoothing 1.Computation of the uniform Laplacian operator and using it for smoothing (uniform Laplace smoothing) 2.Computation of the circum-radius to minimum edge length ratio to evaluate th