TETGEN

NAME

tetgen — A Quality Tetrahedral Mesh Generator

SYNOPSIS

tetgen [-pq__a__AriYMS__T__dzjo_fengGOJBNEFICQVvh] file

DESCRIPTION

This manual page documents briefly the tetgen command. Full documentation is available online: http://tetgen.berlios.de/

tetgen generates the Delaunay tetrahedralization, Voronoi diagram, and convex hull for three-dimensional point sets, generates the constrained Delaunay tetrahedralizations and quality tetrahedral meshes for three-dimensional domains with piecewise linear boundary.

OPTIONS

A summary of options is included below. For a complete description, see the online documentation.

	-p		Tetrahedralizes a picecwise linear complex (.poly or .smesh file).
	-q		Quality mesh generation. A minimum radius-edge ratio may be specifyed (default 2.0).
	-a		Applies a maximum tetrahedron volume constraint.
	-A		Assigns attributes to identify tetrahedra in certain regions.
	-r		Reconstructs/Refines a previously generated mesh.
	-Y		Suppresses boundary facets/segments splitting.
	-i		Inserts a list of additional points into mesh.
	-M		Does not merge coplanar facets.
	-T		Set a tolerance for coplanar test (default 1e-8).
	-d		Detect intersections of PLC facets.
	-z		Numbers all output items starting from zero.
	-j		Jettison unused vertices from output .node file.
	-o2		Generates second-order subparametric elements.
	-f		Outputs faces (including non-boundary faces) to .face file.
	-e		Outputs subsegments to .edge file.
	-n		Outputs tetrahedra neighbors to .neigh file.
	-g		Outputs mesh to .mesh file for viewing by Medit.
	-G		Outputs mesh to .msh file for viewing by Gid.
	-O		Outputs mesh to .off file for viewing by Geomview.
	-B		Suppresses output of boundary information.
	-N		Suppresses output of .node file.
	-E		Suppresses output of .ele file.
	-F		Suppresses output of .face file.
	-I		Suppresses mesh iteration numbers.
	-C		Checks the consistency of the final mesh.
	-Q		Quiet: No terminal output except errors.
	-V		Verbose: Detailed information on what I’m doing.
	-v		Prints the version information.
	-h		Help: A brief instruction for using TetGen.

EXAMPLES

The wing is described in two files: wing.node and wing.poly. The command line:

tetgen −pq wing

generates the quality mesh in three files: wing.1.node, wing.1.ele, and wing.1.face.

Default, the radius-edge ratio of each tetrahedron is bounded below 2.0. You can impose a tight bound by adding a number directly after the ’−q’ switch. Like this:

tetgen −pq1.2 wing

generates a quality mesh which have more points inserted than the mesh created in above.

See http://tetgen.berlios.de/switches.examples.html for more examples.

AUTHOR

This manual page was written by Ondrej Certik <ondrej AT certik DOT cz> for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.

On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

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