Torres Mario 678-3280 AMSRL-BE-M (mtorres++at++arl.mil)
Tue, 22 Aug 95 9:34:13 MDT
Actually yes! By doing a netsearch on netscape I came across many
subjects and I was amazed how easy it was to obtain it, then I assumed it
was too trivial a matter to post. Here it is:
My hacked solution consists of using a program a program by Jonathan
Richard Shewchuk of School of Computer Science Carnegie Mellon
University called Triangle. Triangle is a Two-Dimensional Quality Mesh
Generator and Delaunay Triangulator. This program takes an array of nodes
and does the triangulation for you complete with indexing and a showme
program to see (in 2D) what the mesh looks like. His program does the
triangulation but no triangle decimation is done. The way I handle the
reduction of triangles is by reducing the number of nodes before I
submitt them to the triangle program. This worked great for me! Since I
was working with terrain elevation data, I eliminated redudant nodes by
deciding if they were within an elevation range. The great advantage of
using Triangle is that I can use the indexing array to create my own
geosets in Performer without having to rack my brains or use a multigen
or corypheous software or any other ;) .
For complete source and documentatio look at Jonathan's webpages:
http://www.cs.cmu.edu/~quake/triangle.html
http://www.cs.cmu.edu/~quake/showme.html
There are other documents on the web but since this did the trick for
me I looked no further. HTH (Hope this helps!)
Mario Torres
STC ++at++ ARMY Research Lab.
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:51:49 PDT