edge_index_to_triangles¶

tiatoolbox . tools . graph . edge_index_to_triangles

edge_index_to_triangles(edge_index)[source]¶

Convert an edged index to triangle simplices (triplets of coordinate indices).

Parameters:: edge_index (np.ndarray) – An Nx2 array of edges.
Returns:: An Nx3 array of triangles.
Return type:: ArrayLike

Example

>>> rng = np.random.default_rng()
>>> points = rng.random((100, 2))
>>> adjacency = delaunay_adjacency(points)
>>> edge_index = affinity_to_edge_index(adjacency)
>>> triangles = edge_index_to_triangles(edge_index)