Boundary Extraction

extract_border_cycle(mesh, starting_point=None)

Extracts a list of vertices that are on the border of the mesh.

Parameters:

Name	Type	Description	Default
mesh	Mesh	The mesh	required
starting_point	int	Origin point. Should be on border	None

Returns:

Type	Description
list	list of vertices on border in order
list	list of edges on border in order

Raises:

Type	Description
Exception	Fails if 'starting_point' not on the border

extract_border_cycle_all(mesh)

Extracts all the border cycles of a mesh and returns a list of list of vertices

Parameters:

Name	Type	Description	Default
mesh	Mesh	The mesh	required

Returns:

Type	Description
list	list of list of vertices

extract_boundary_of_surface(mesh)

Returns the boundary of a surface mesh as a polyline

Parameters:

Name	Type	Description	Default
mesh	SurfaceMesh	input mesh	required

Returns:

Name	Type	Description
PolyLine	PolyLine	boundary curves of the mesh
dict	PolyLine	maps a vertex id in the boundary to its corresponding id in the original mesh.

extract_boundary_of_volume(mesh)

Returns the boundary of a volume mesh as a surface mesh

Parameters:

Name	Type	Description	Default
mesh	VolumeMesh	input mesh	required

Returns:

Name	Type	Description
SurfaceMesh	SurfaceMesh	the boundary as a SurfaceMesh
dict	SurfaceMesh	maps a vertex id in the boundary to its corresponding id in the original mesh.
dict	SurfaceMesh	maps a vertex id from the original mesh to its corresponding id in the boundary mesh.