Surface triangulation of 3D points cloud

Hi everyone I was wondering if it is possible, starting from a Matrix A that describes, for each row, the coordinates of my points cloud, to create a surface mesh of my matrix A made by triangles. i tried with delaunay triangulation, but it seems that gives me a thetraedral mesh, insted i want to triangulate only the boundaries to create a .stl file. How could i do? Any help would be appreciated, Lorenzo

[KSSV]

Try this: https://in.mathworks.com/matlabcentral/fileexchange/25555-mesh2d-delaunay-based-unstructured-mesh-generation

[John Kearns]

@Lorenzo Bennati, did this work for you? I am also trying to do this.

[Jiayi]

Hello, I face the same problem. have you ever solved this? Could you please give me some tips? Thank you so much! Jiayi@Lorenzo Bennati

Answer 1

[John D'Errico]

A common solution is to use a CRUST code. In fact, there is a version of CRUST to be found on the File Exchange, here:

https://www.mathworks.com/matlabcentral/fileexchange/63730-surface-reconstruction-from-scattered-points-cloud?s_tid=srchtitle

https://www.mathworks.com/matlabcentral/fileexchange/63731-surface-reconstruction-from-scattered-points-cloud-open-surfaces?s_tid=srchtitle

There are two versions, depending on whether the surface is a closed one or not.