Info : T is actually a triangulation -list of triangles-, in which each index corresponding to the row index of a vertex in another list -a vertices list-, it is a widely used technique used to store and write triangular meshes in mesh processing. Here below the example is a tetrahedron -4 facets-.
Swap the first and last columns
Return the first and last characters of a character array
Multiply 2 numbers
Dots in a Sphere
Find neighbor triangle indices
Query every vertices neighbor indices
Query a vertex neighbors
Remove duplicated triangles
Query edges list
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