polygon_triangulate_test, a FORTRAN90 code which calls polygon_triangulate(), which triangulates a possibly nonconvex polygon in 2D, and which can use gnuplot to display the external edges and internal diagonals of the triangulation.
The computer code and data files described and made available on this web page are distributed under the MIT license
polygon_triangulate, a FORTRAN90 code which triangulates a possibly nonconvex polygon, and which uses gnuplot() to display the external edges and internal diagonals of the triangulation.
COMB is an example of a "comb" polygon of 10 vertices
HAND outlines a hand using 59 vertices.
I18 is an example of a complicated nonconvex polygon, using 18 vertices.