From: orourke@sophia.smith.edu (Joseph O'Rourke)
Subject: Re: Delaunay Triangulation
Organization: Smith College, Northampton, MA, US
Lines: 22

In article <lsk1v9INN93c@caspian.usc.edu> zyeh@caspian.usc.edu (zhenghao yeh) writes:
>
>Does anybody know what Delaunay Triangulation is?
>Is there any reference to it? 
>Is it useful for creating 3-D objects? If yes, what's the advantage?

There is a vast literature on Delaunay triangulations, literally
hundreds of papers.  A program is even provided with every copy of 
Mathematica nowadays.  You might look at this if you are interested in 
using it for creating 3D objects:

@article{Boissonnat5,
  author = "J.D. Boissonnat",
  title = "Geometric Structures for Three-Dimensional Shape Representation",
  journal = "ACM Transactions on Graphics",
  month = "October",
  year = {1984},
  volume = {3},
  number = {4},
  pages = {266-286}
}