discQuadMesh

Below is a demonstration of the features of the discQuadMesh function

Contents

Syntax

[varargout]=discQuadMesh(nElements,r,f);

Description

Examples

clear; close all; clc;

PLOT SETTINGS

fontSize=35;
edgeWidth=3;

Building a quadrilateral circular mesh

ne=8; %Elements in radius
r=2; %Outer radius of disc
f=0.5; %Fraction (with respect to outer radius) where central square appears

%Create the mesh
[Fc,Vc]=discQuadMesh(ne,r,f);

%Visualizing mesh

cFigure; hold on;
title('A circle meshed with quadrilateral elements','FontSize',fontSize);
gpatch(Fc,Vc,'gw','k',1,edgeWidth);
axisGeom(gca,fontSize);
view(2);
drawnow;

Option face label output

The additional outputs Cc and indEdge provide a color labelling for the central square and other elements, and the indices for the outer edge respectively.

[Fc,Vc,Cc,indEdge]=discQuadMesh(ne,r,f);

%Visualizing mesh

cFigure; hold on;
title('A circle meshed with quadrilateral elements','FontSize',fontSize);
gpatch(Fc,Vc,Cc,'k',1,edgeWidth);
axisGeom(gca,fontSize);
view(2);
drawnow;

Constrained smoothing of mesh

Eb=patchBoundary(Fc,Vc);

cPar.n=100;
cPar.Method='LAP';
cPar.RigidConstraints=unique(Eb(:));
[Vcs]=patchSmooth(Fc,Vc,[],cPar);

cFigure;
subplot(1,2,1); hold on;
title('Raw','FontSize',fontSize);
gpatch(Fc,Vc,Cc,'k',1,edgeWidth);
axisGeom(gca,fontSize);
view(2);

subplot(1,2,2); hold on;
title('Smoothed','FontSize',fontSize);
gpatch(Fc,Vcs,Cc,'k',1,edgeWidth);
axisGeom(gca,fontSize);
view(2);

drawnow;

GIBBON www.gibboncode.org

Kevin Mattheus Moerman, [email protected]

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License: https://github.com/gibbonCode/GIBBON/blob/master/LICENSE

GIBBON: The Geometry and Image-based Bioengineering add-On. A toolbox for image segmentation, image-based modeling, meshing, and finite element analysis.

Copyright (C) 2019 Kevin Mattheus Moerman

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Published with MATLAB® R2019a