MATLAB: How to create marching triangulation or advance front mesh in Matlab ?

MATLABmesh

I have used delauney triangulation method in a grid (which created ortho trias)

I would like to know how to create marching trias/advancing trias ?

This is the code created for a small mesh grid

It creates two figures one with triangular mesh another with just grid points.

How to create marching trias for figure (2)

clc
close all
[X,Y]= meshgrid(1:11);
figure; hold on;
plot(X,Y,'k');
plot(Y,X,'k');axis off
grid on
tri = delaunay(X,Y);
   figure(1)
   trimesh(tri,X,Y)
figure(2)
plot(X,Y,'.')

Best Answer

The best available:

https://in.mathworks.com/matlabcentral/fileexchange/25555-mesh2d-delaunay-based-unstructured-mesh-generation

Related Solutions

MATLAB: How can i plot a surface defined by scattered points within the convex hull of those points.

In this particular case, it looks like you can project the surface down to 2D on either the Y=0 or X=0 planes. Then you can do the triangulation and go back up to 3D. That would look like so:

tri = delaunay(X,Z);
trisurf(tri,X,Y,Z)

MATLAB: Coloring of specific elements using trimesh

I think the easiest way to do this would be to simply create two separate meshes, one that includes all points and one that only includes the ones you want to treat specially.

[x,y] = meshgrid(1:15,1:15);
tri = delaunay(x,y);
z = peaks(15);
isspecial = rand(size(tri,1),1) < 0.1;
trimesh(tri,x,y,z, 'facecolor', 'interp', 'edgecolor', 'k')
hold on
trimesh(tri(isspecial,:),x,y,z, 'facecolor', 'r')

Best Answer

Related Solutions

MATLAB: How can i plot a surface defined by scattered points within the convex hull of those points.

MATLAB: Coloring of specific elements using trimesh

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