Illustrate how to generate quads only mesh

Contents

clear variables;

Setup GMSH

This call is mandatory in order for Matlab/Octave to be able to run GMSH executable.

mp_setup_gmsh()

Set meshing parameters

meshingParams.basename ='tringles_vs_quads';
meshingParams.folder = '.';
meshingParams.dim = 2;
meshingParams.clean = false;
meshingParams.quadsonly = true;

Generate geometric model in GMSH geo format.

params.lc = 0.4;
params.w = 3;
params.r = 1;
gmshgeom = mp_geom_circ_hole(params);

Generate quads only mesh

meshingParams.quadsonly = true;
[nodes, elements] = mp_gmsh_generate(gmshgeom, meshingParams);

Visualize mesh

figure(1);
clf;
mp_plot_mesh(gca, nodes, elements);
axis('equal')
saveas(gcf(), 'quads_circ_hole.png');

Generate triangles only mesh

meshingParams.quadsonly = false;
[nodes, elements] = mp_gmsh_generate(gmshgeom, meshingParams);

Visualize mesh

figure(2);
clf;
mp_plot_mesh(gca, nodes, elements);
axis('equal')
saveas(gcf(), 'tri_circ_hole.png');
% Report demo status
mp_manage_demos('report', 'triangles_vs_quads', true);

Published with MATLAB® R2017a