How to Create faces from Vertex [X Y Z] co-ordiante for STL write ? without inbuilt STL command?

How to Create faces from Vertex [X Y Z] co-ordiante for STL write ? without inbuilt STL command?

Answer 1

[KSSV]

Read about delaunay and delaunayTriangulaion.

https://in.mathworks.com/help/matlab/ref/delaunay.html

https://in.mathworks.com/help/matlab/ref/delaunaytriangulation.html

Once you have formed faces..you may use stlwrite from

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

[Selva Karna]

KSSV Thanks for reply. i did't looking for MATLAB inbuild commands, for Faces Creation from x y z , hard code of MATLAB i expecting can you sir any code?

This code not cleare to create Faces from x y z???

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

[raouf takab]

Answer by RiK:

An stl file has two parts. One part contains triplets of vertex IDs, and the other part contains the xyz coordinates of each vertex. The triplets tell you the three corners of a face of your mesh.

In principle there can be more than three IDs, but triangular meshes are the most usual.

The data you have seems to only be the faces array, although maybe the vertices array is hidden in the last part of your array.

Also, the faces array describes the vertices, not the normal vector of that face.