TRIANGLE_IO
Read and Write TRIANGLE Files


TRIANGLE_IO, a C++ code which can read or write some simple versions of some of the files used by Jonathan Shewchuk's triangle() program.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

TRIANGLE_IO is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

FEM_TO_TRIANGLE, a C++ program which reads FEM files defining a 2D mesh of triangles, namely a file of node coordinates and a file of elements defined by node indices, and creates a corresponding pair of node and element files for use by Jonathan Shewchuk's triangle() program.

POLY, a data directory which contains a description and examples of the POLY file format.

SHOWME, a C program which can display the POLY files uses as input to TRIANGLE, and the output files that define meshes and other objects.

TRIANGLE, a C program which computes Voronoi diagrams and Delaunay triangulations, and creates and manipulates files that can be displayed by SHOWME.

TRIANGLE_FILES, a data directory which contains examples of files used by the triangle() and showme programs.

triangle_io_test

TRIANGLE_TO_FEM, a C++ program which reads the NODE and ELE files created by TRIANGLE to describe a triangular mesh, and writes a corresponding pair of node and element files in the 2D FEM format.

TRIANGLE_TO_XML, a C++ program which reads the NODE and ELE files created by triangle() to describe a triangular mesh in 2D, and writes out a corresponding XML mesh file for use by DOLFIN or FENICS.

Reference:

  1. http://www-2.cs.cmu.edu/~quake/triangle.html, the TRIANGLE web site;

Source Code:


Last revised on 04 May 2020.