Mesh doesn't work for cone shape?

Question

Tianshu Yu 2019-6-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469515-mesh-doesn-t-work-for-cone-shape

评论： Dr Sohaib Khan 2020-6-2

I have a perfect cone shape, which is stored in a the tip_6.stl. I try to use the function generateMesh(). I found that no matter how do I choose the parameter Hmax and Hmin, It always shows me something like the following: Meshing failed with a Hmax of 0.100000 and a Hmin of 0.050000, adjusting Hmax and Hmin may resolve the problem. I found that as soon as I replace the tip point with a shpere, mesh just works fine. Seems like the function generateMesh cannot generate any sharp feature. Is there any way to get around this problem?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

David Goodmanson 2019-6-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469515-mesh-doesn-t-work-for-cone-shape#answer_381346

在 MATLAB Online 中打开

Hello TY,

I don't know if you need a fancier triangular mesh, but here is a way to a 'square' one.

r = 0:.05:1;
th = linspace(0,2*pi,length(r));
[R theta] = meshgrid(r,th)
x = R.*cos(theta);
y = R.*sin(theta);
z = R*5;    % 5 for example
mesh(x,y,z)