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Re: Mesh generation in 2D

• To: mathgroup at smc.vnet.net
• Subject: [mg44694] Re: Mesh generation in 2D
• From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig-de>
• Date: Fri, 21 Nov 2003 05:13:17 -0500 (EST)
• Organization: Uni Leipzig
• References: <bphu5i$1nn$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

http://www.andrew.cmu.edu/user/sowen/softsurv.html

http://www-2.cs.cmu.edu/afs/cs.cmu.edu/project/quake/public/www/triangle.html

and the  commandline tools can be used with Matheaticas Run[] command.

Regards
  Jens

"Goyder Dr HGD" <H.Goyder at rmcs.cranfield.ac.uk> schrieb im Newsbeitrag
news:bphu5i$1nn$1 at smc.vnet.net...
> Dear MathGroup,
>
> What is the best way to generate a mesh of triangles for a 2D grid on a
> general nonconvex region?
>
> I know that in version 4.2 there is a computational geometry add-on and
that
> there is a package for polygon triangulation at
> http://library.wolfram.com/packages/polygontriangulation/  by Martin Kraus
> and also there is the book and packages by Tom Wickham-Jones
> http://library.wolfram.com/infocenter/Books/3753/ . However, I cannot find
a
> procedure for putting this altogether to make a triangular mesh.
>
> What I am looking for is:
>
> 1. The ability to put grid nodes in a general nonconvex region so that the
> triangles are all about the same size and the triangles are as close as
> possible to equilateral.
>
> 2. The ability to weight the size of the triangles so that I can put more
> grid where it is needed.
>
> 3. The ability to enforce lines within the region (not necessarily
straight)
> so that I can have barriers with no thickness.
>
> 4. Everything implemented in Mathematica.
>
> Has this all been done or am I asking for the impossible?
>
> Thanks for your comments.
>
> Hugh Goyder
>
>
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