mesh.Mesh.non_manifold_edges

Mesh.non_manifold_edges()

Return the non-manifold edges of a Mesh.

Non-manifold edges are edges where subparts of a mesh of level 3 are connected by an edge but not by a face.

Returns

int array

An integer array with the non-manifold edge numbers. Possibly empty (always if the dimensionality of the Mesh is lower than 3).

Notes

The definition of the nonManifold edges in terms of the nodes can be obtained as follows

self.edges[self.non_manifold_edges()]

Examples

>>> M1 = Mesh(eltype='hex8')
>>> M2 = M1.translate([1.0, 1.0, 0.0])
>>> M = M1 + M2
>>> print(M.non_manifold_edges())
[6]
>>> print(M.face_mesh().non_manifold_nodes())
[]