Triangulation of a domain

Question

Khalid Ibne Masood 2021-4-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/791364-triangulation-of-a-domain

回答： darova 2021-4-3

Hello,

I want to implement 2D fast marching method (FMM) in a rectangular domain with triangular meshes as there should be some curves inside the rectangular domain. FMM requires that all the triangles need to be acute angle triangle. Now please help me

(i) how to create triangular meshes in the rectangular domain with some curves inside

(ii) how to make sure all the triangles are non-obtuse triangles.

I appreciate all the helps.

Thank you

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Answer 1

darova 2021-4-3

1
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https://ww2.mathworks.cn/matlabcentral/answers/791364-triangulation-of-a-domain#answer_666029

在 MATLAB Online 中打开

Here is ax example of triangulation

t = (0:90:270)+45;
[x,y] = pol2cart(t*pi/180,1);
gd = [2;length(x);x(:);y(:)];   % geometry description
dl = decsg(gd);                 % decomposition
[p,e,t] = initmesh(dl);         % initialize mesh (points,edges,triangles)
pdemesh(p,e,t)