Vertex Smooth

Resources:
[1] http://www.stat.wisc.edu/~mchung/papers/HBM2001/HBM2001diffusion.html

[2] http://www.stat.wisc.edu/~mchung/papers/HBM2001/chung.2001.OHBM.pdf
[3] http://www.stat.wisc.edu/~mchung/papers/HBM2001/chung.2001.OHBMposter.pdf

[4] http://docs.salome-platform.org/5/smesh/user/smoothing_page.html
[5] https://www.youtube.com/watch?v=TQcS2q_rAHQ
     https://i.ytimg.com/vi/TQcS2q_rAHQ/maxresdefault.jpg
[6] http://grasshopperprimer.com/en/1-foundations/1-5/1_surface-geometry.html