How to convert a figure of a minimal surface into an STL or OBJ file?

Hi, I've got this code for making a Schwartz D structure in MATLAB (credits to https://github.com/pttrsnv2/Minimal_Surfaces_Visualization_Code/blob/master/Minimal_Surfaces_Code_Upload_V2.m).

How could I make this into an STL or OBJ file? I need anything I could put into solidworks or fusion 360. I've tried to go through a ton of mathworks answers regarding this, but I can't seem to make stlwrite work no matter what I try.

f_sd = @(x,y,z) sin(x).*sin(y).*sin(z) + sin(x).*cos(y).*cos(z)+cos(x).*sin(y).*cos(z)...

+ cos(x).*cos(y).*sin(z);

% The limits for a 3-D plot

x_sd_l = 0;

x_sd_u = 2*pi;

y_sd_l = 0;

y_sd_u = 2*pi;

z_sd_l = 0;

z_sd_u = pi;

% Mesh density

MD_sd = 50; % Change as needed

% Face color

C_sd = 'red'; % Change as needed

figure

fimplicit3(f_sd, [x_sd_l x_sd_u y_sd_l y_sd_u z_sd_l z_sd_u], 'meshdensity',MD_sd,'facecolor',C_sd)

title('Schwarz D Plot')

xlabel('X')

ylabel('Y')

zlabel('Z')

Answer 1

[Supraja]

The github link you mentioned in the question is unfortunately not working. But assuming you want to convert your file into .stl or .obj file, I am attaching the documentation links below which would help you to achieve your goal.

Conversion to .stl file:

File Exchange - MATLAB Central (mathworks.com)

stlwrite - write ASCII or Binary STL files - File Exchange - MATLAB Central (mathworks.com)

surf2stl - File Exchange - MATLAB Central (mathworks.com)

stlwrite: Create STL file from triangulation - MATLAB stlwrite (mathworks.com)

Conversion to .obj file:

Save Wavefront .OBJ files (simple or colour) - File Exchange - MATLAB Central (mathworks.com)