remesh code for a 3D geometry

Hi. I need to remesh a 3D geometry. I have both node coordinates and triangle faces. I have been using this somewhat dated code (link) however I cannot get a dense mesh (edgelength < 2) which would be ideal for me.

[vnew, fnew, meanedge, stdev]=remesher(V, F, edgelength, iterations)    % you can read this line in the code given on the link

Does anyone know how to solve such a problem?

Eventually:

• Does anyone know what equivalent code that performs the same function as remesh?
• Or a code that allows to thicken the number of triangles in a geometry? In that case I would have a 3D geometry with a wide mesh (few nodes and triangles) and I would like to increase the number of nodes and triangles.

Answer 1

[Sulaymon Eshkabilov]

It is worth testing these fcns for remeshing:

griddata()

griddatan()

delaunayn()

[Alberto Acri]

Thank you for your reply. I can take a look at these functions but I am not very familiar with matlab so to apply them to my case.

Answer 2

[Sulaymon Eshkabilov]

An alternative mesh fcn in MATLAB is ndgrid() - see this example:

xx = linspace(-pi,pi, 20);
[X,Y] = ndgrid(xx);
Z = 2*X.*exp(cos(X)+cos(Y));
nexttile
mesh(X,Y, Z)
yy = linspace(-pi,pi, 100);
[XX,YY] = ndgrid(yy);
FZ = interpn(X,Y,Z, XX, YY, 'makima');
nexttile
mesh(XX,YY, FZ)

[Alberto Acri]

Thank you for your reply. In my case where I have a coordinate matrix Rx3 how should I do it?

[Sulaymon Eshkabilov]

Try interpn()