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

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Selva Karna 2019-4-29

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https://ww2.mathworks.cn/matlabcentral/answers/459139-how-to-create-faces-from-vertex-x-y-z-co-ordiante-for-stl-write-without-inbuilt-stl-command

编辑： raouf takab 2019-7-25

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Answer 1

KSSV 2019-4-29

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/459139-how-to-create-faces-from-vertex-x-y-z-co-ordiante-for-stl-write-without-inbuilt-stl-command#answer_372771

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

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Selva Karna 2019-4-30

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 2019-7-25

编辑：raouf takab 2019-7-25

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.

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