SGremsurfedgepoints
by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - Surfaces
Introduced first in SolidGeometry 4.2, Creation date: 2018-03-06, Last change: 2025-09-14
returns a surface model without edge points and surface points that are inside of a surface
Description
This function is useful if a tetrahedron model (pde mesh) is converted into a surface model, or a solid is bent somehow. Afterwards there a surfaces that consist of many vertices that are in the same plane. This function analyses the surface and retesselate all surface based only on the boundary vertices.
IN ADDITION THIS FUNCTIONS OPTIMIZES THE TRIANGLES BY RETESSELATION
BUGGY since 2024a - delaunatTriangulation changed or tetramesh Use Line 62 in SGfittingsample
See Also: VLFLremsurfpoints
, SGremsurfpoints
, SGofpdemodel
, SGremedgepoints
Example Illustration
Syntax
[SGN,FLN,FSi]=SGremsurfedgepoints(SG,[alpha,minf])
Input Parameter
SG: | | Solid Geometry surface model |
alpha: | | alpha angle for feature surface; default is 0.01 |
minf: | | minimum facets per face; default is 5; smalles value |
Output Parameter
SGN: | | New surface model with reduced vertices and faces |
FLN: | | Reduced Facet list based on the original vertex list |
FSi: | | Feature surface index list |
Examples
Remove surface points and points on the line:
A=SGlinkage(5,30,5); model=pdemodelofSG(A,1); SGofpdemodel(model); B=ans
SGfusedoubledvertices(B,0.1); C=ans; % with rounded VL it is easier to find errors in triangulation
SGremsurfedgepoints(C)
SGremsurfedgepoints(SGsphere(10),0.1); % 0.1 makes sense
Copyright 2018-2025 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