TLFLneighbors2
by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - TR/Tetrahedrons
Introduced first in SolidGeometry 2.1, Creation date: 2014-12-30, Last change: 2025-09-14
returns the vertex indices of a tetrahedron list that are the attachments to th facet list
Description
returns a cell array containing the vertex indices of a tetrahedron list that are the attachments to the facet list. For a correct tetrahedron list TL and a correct surface facet list, the cell contains zero, one or two elements
In contrast to TLFLneighbors, the output parameter NL is calculated
Example Illustration
Syntax
[VLi,TLi,NL]=TLFLneighbors2(TL,FL,[fi])
Input Parameter
TL: | | tetrahedron list nx4 |
FL: | | facet list nx3 |
fi: | | optional selection list for FL; default is 1:end |
Output Parameter
VLi: | | cell array of the vertex indices attached to the facets |
TLi: | | Tetrahedron indices attached to the facets |
NL: | | Neighbors list for the tetrahedron list |
Examples
Show the relationship between TR3 and TR4
[vi,TLi,NL]=TLFLneighbors2(TL,FL);
a=sum(isnan(NL),2)<4
VLTLplot(VL,TL(a,:),'y');
VLTLplot(VL,TL(~a,:),'c');
Copyright 2014-2025 Tim C. Lueth. All rights reserved. The code is the property of Tim C. Lueth and may not be redistributed or modified without explicit written permission. This software may be used free of charge for academic research and teaching purposes only. Commercial use, redistribution, modification, or reverse engineering is strictly prohibited. Access to source code is restricted and granted only under specific agreements. For licensing inquiries or commercial use, please contact: Tim C. Lueth
Last html export of this page out of FM database by TL: 2025-09-21