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TetGenGetElements[expr]

gets the elements in a TetGen expression.

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Details and Options Details and Options
Examples  
Basic Examples  
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TetGenLink`
TetGenLink`

TetGenGetElements

TetGenGetElements[expr]

gets the elements in a TetGen expression.

Details and Options

  • To use TetGenGetElements, you first need to load it using Needs["TetGenLink`"].
  • TetGenGetElements returns a list of a list of integers that specify which parts of the coordinates make up the tetrahedra.

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 carries out the tetrahedralization, returning a new TetGen instance:

Wolfram Language code: outInst = TetGenTetrahedralize[ inst, "pq"]

This extracts the points and elements from the tetrahedralization:

Wolfram Language code: coords = TetGenGetPoints[outInst]; meshElements = TetGenGetElements[outInst];

With the following support function, you can visualize the tetrahedra:

Wolfram Language code: TetrahedraWireframe[i_] := Line[ Flatten[ i[[All, #]]& /@ {{1, 2}, {2, 3}, {3, 1}, {1, 4}, {2, 4}, {3, 4}}, 1]]
Wolfram Language code: Graphics3D[GraphicsComplex[coords, TetrahedraWireframe[meshElements]], Boxed -> False]
Wolfram Research (2010), TetGenGetElements, Wolfram Language function, https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetElements.html.

Text

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

CMS

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

APA

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

BibTeX

@misc{reference.wolfram_2026_tetgengetelements, author="Wolfram Research", title="{TetGenGetElements}", year="2010", howpublished="\url{https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetElements.html}", note=[Accessed: 15-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_tetgengetelements, organization={Wolfram Research}, title={TetGenGetElements}, year={2010}, url={https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetElements.html}, note=[Accessed: 15-June-2026]}