Export 3D MATLAB figure to EM Simulation Software (CST).

Question

Michael Elman 2024-2-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2085283-export-3d-matlab-figure-to-em-simulation-software-cst

回答： Pratyush Swain 2024-3-15

Hello,

I would like to create a cone using a square mesh and export it to CST software. I am familiar with using the triangulation function to create an STL file for a triangular mesh, but I'm unsure how to proceed with a polygonal mesh. Could you please guide me on how to generate an OBJ file for a cone made of a square mesh that can be imported into CST software?

Here is a code for a cone I want to export:

clear all

clc

res=0.5;

x=-5:res:5;

y=-5:res:5;

Z0=10;

alpha=20;

[X,Y]=meshgrid(x,y);

R=sqrt(X.^2+Y.^2);

Z=Z0-R*cotd(alpha);

figure()

f=surf(X,Y,Z)

f =

Surface with properties: EdgeColor: [0 0 0] LineStyle: '-' FaceColor: 'flat' FaceLighting: 'flat' FaceAlpha: 1 XData: [21×21 double] YData: [21×21 double] ZData: [21×21 double] CData: [21×21 double] Use GET to show all properties

axis equal

Thank you in advance!

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Answer 1

Pratyush Swain 2024-3-15

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2085283-export-3d-matlab-figure-to-em-simulation-software-cst#answer_1425976

Hi Michael,

Exporting 3D MATLAB Figure to the .obj file format is not directly supported.Please refer to this third-party library from FILE Exchange on MATLAB Central: https://www.mathworks.com/matlabcentral/fileexchange/27982-wavefront-obj-toolbox which has a function “write_wobj(OBJ,filename)” that can export 3D figure as an .obj file.

Additionally you can also refer to following resources:

1 - https://www.mathworks.com/matlabcentral/fileexchange/72906-save-wavefront-obj-files-simple-or-colour

2- https://www.mathworks.com/matlabcentral/fileexchange/20922-stlwrite-write-ascii-or-binary-stl-files

Hope this helps.