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TetGenGetNeighbors[expr]

gets the neighbors in a TetGen expression.

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

TetGenGetNeighbors

TetGenGetNeighbors[expr]

gets the neighbors in a TetGen expression.

Details and Options

  • To use TetGenGetNeigbors, you first need to load it using Needs["TetGenLink`"].
  • TetGenGetNeigbors returns a list of a list of integers that specify which tetrahedra are next to each other. An entry of indicates that the respective tetrahedron is on the boundary.
  • TetGenGetNeigbors needs the "n" switch to be set during the call to TetGenTetrahedralize.

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. The switch "n" requests TetGen to compute the neighbors:

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

This extracts the points and elements from the tetrahedralization:

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

This is a list of the neighboring elements, with indicating a boundary:

Wolfram Language code: TetGenGetNeighbors[outInst]
Wolfram Research (2010), TetGenGetNeighbors, Wolfram Language function, https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetNeighbors.html.

Text

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

CMS

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

APA

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

BibTeX

@misc{reference.wolfram_2026_tetgengetneighbors, author="Wolfram Research", title="{TetGenGetNeighbors}", year="2010", howpublished="\url{https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetNeighbors.html}", note=[Accessed: 15-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_tetgengetneighbors, organization={Wolfram Research}, title={TetGenGetNeighbors}, year={2010}, url={https://reference.wolfram.com/language/TetGenLink/ref/TetGenGetNeighbors.html}, note=[Accessed: 15-June-2026]}