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TetGenGetFaceMarkers[expr]

returns the face markers for a TetGen expression.

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TetGenLink`
TetGenLink`

TetGenGetFaceMarkers

TetGenGetFaceMarkers[expr]

returns the face markers for a TetGen expression.

Details and Options

  • To use TetGenGetFaceMarkers, you first need to load it using Needs["TetGenLink`"].
  • TetGenGetFaceMarkers returns a list of integers that specify which facets have the same markers.

Examples

Basic Examples  (1)

First, load the package:

Wolfram Language code: Needs["TetGenLink`"]

This creates an instance of a TetGen expression:

Wolfram Language code: inst = TetGenCreate[]

This sets up points and facets to use:

Wolfram Language code: pts = {{0., 0., 0.}, {2., 0., 0.}, {2., 0., 2.}, {0., 0., 2.}, {0., 12., 0.}, {2., 12., 0.}, {2., 12., 2.}, {0., 12., 2.}}; facets = {{{1, 2, 3, 4}}, {{5, 6, 7, 8}}, {{1, 5, 6, 2}}, {{2, 6, 7, 3}}, {{3, 7, 8, 4}}, {{4, 8, 5, 1}}};

This sets the points and facets in the TetGen instance:

Wolfram Language code: TetGenSetPoints[inst, pts]; TetGenSetFacets[inst, facets];

This sets the point and facet markers:

Wolfram Language code: TetGenSetPointMarkers[inst, {43, 43, 43, 43, 66, 66, 66, 66}]; TetGenSetFacetMarkers[inst, {43, 66, 4, 2, 5, 3}];

This carries out the tetrahedralization, returning a new TetGen instance:

Wolfram Language code: outInst = TetGenTetrahedralize[ inst, "pqa0.1"]

This extracts the points and elements from the tetrahedralization:

Wolfram Language code: coords = TetGenGetPoints[outInst]; faces = TetGenGetFaces[outInst];

This visualizes the surface mesh as a wire frame:

Wolfram Language code: Graphics3D[GraphicsComplex[coords, Line[ faces[[All, {1, 2, 3, 1}]]]], Boxed -> False]

To extract the face markers, you use TetGenGetFaceMarkers:

Wolfram Language code: faceMarkers = TetGenGetFaceMarkers[outInst];

This shows all available facet markers:

Wolfram Language code: Union[faceMarkers]

This shows facets according to some selected markers:

Wolfram Language code: selectedFaces = {43, 66}; Graphics3D[{ GraphicsComplex[coords, Polygon[ Flatten[ Pick[faces, faceMarkers, #]& /@ selectedFaces, 1]]]}]
Wolfram Research (2010), TetGenGetFaceMarkers, Wolfram Language function, https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetFaceMarkers.html.

Text

Wolfram Research (2010), TetGenGetFaceMarkers, Wolfram Language function, https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetFaceMarkers.html.

CMS

Wolfram Language. 2010. "TetGenGetFaceMarkers." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetFaceMarkers.html.

APA

Wolfram Language. (2010). TetGenGetFaceMarkers. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetFaceMarkers.html

BibTeX

@misc{reference.wolfram_2026_tetgengetfacemarkers, author="Wolfram Research", title="{TetGenGetFaceMarkers}", year="2010", howpublished="\url{https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetFaceMarkers.html}", note=[Accessed: 15-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_tetgengetfacemarkers, organization={Wolfram Research}, title={TetGenGetFaceMarkers}, year={2010}, url={https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetFaceMarkers.html}, note=[Accessed: 15-June-2026]}