trimesh_boundaries

trimesh_boundaries(M)

Compute all (ordered) boundary loops of a manifold triangle mesh.

Parameters:

M(list, list)

A mesh represented by a list of vertices and a list of faces.

Returns:

array

The ordered boundary loops of the triangle mesh. Each loop is a sequence of vertex indices.

Notes

The input mesh should be manifold.

Examples

>>> import compas
>>> import compas_libigl
>>> from compas.datastructures import Mesh
>>> mesh = Mesh.from_off(compas.get('tubemesh.off'))
>>> mesh.quads_to_triangles()
>>> M = mesh.to_vertices_and_faces()
>>> boundaries = compas_libigl.trimesh_boundaries(M)
>>> len(boundaries) == 1
True