Constructs a mesh of line segments corresponding to non-shared (i.e. boundary) edges of triangles or quads in the original mesh.
getBoundary3d(mesh, sorted = FALSE, simplify = TRUE)
A mesh object.
Whether the result should have the segments sorted in sequential order.
Whether to simplify the resulting mesh, dropping all unused
FALSE, the vertices of the result will
be identical to the vertices of
they will likely be different, even if no vertices were dropped.
"mesh3d" object containing 0 or more segments.