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Mesh generation in 2D
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 -- This message has been scanned for viruses and dangerous content by the Cranfield MailScanner, and is believed to be clean.