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.

SEE ALSO¶

netgen (1)

AUTHOR¶

This manual page was written by Ondrej Certik <ondrej@certik.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.