def to_shell(cls, entity):
"""
Convert an entity to a shell.
:param entity: The entity.
:return: A shell.
:rtype: OCCT.TopoDS.TopoDS_Shell
:raise TypeError: If entity cannot be converted to a shell.
"""
if isinstance(entity, TopoDS_Shell):
return entity
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_SHELL:
return TopoDS.Shell_(entity)
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_FACE:
shell = TopoDS_Shell()
builder = BRep_Builder()
builder.MakeShell(shell)
builder.Add(shell, entity)
return shell
raise TypeError('Failed to convert entity to a shell.')
def __init__(self, faces):
topods_shell = TopoDS_Shell()
builder = BRep_Builder()
builder.MakeShell(topods_shell)
for face in faces:
builder.Add(topods_shell, face.object)
self._shell = Shell(topods_shell)
def to_shell(self):
"""
Create a shell from the face.
:return: The shell.
:rtype: afem.topology.entities.Shell
"""
topods_shell = TopoDS_Shell()
builder = BRep_Builder()
builder.MakeShell(topods_shell)
builder.Add(topods_shell, self.object)
return Shell(topods_shell)
def by_face(face):
"""
Create a shell from a face.
:param afem.topology.entities.Face face: The face.
:return: The shell.
:rtype: afem.topology.entities.Shell
"""
topods_shell = TopoDS_Shell()
builder = BRep_Builder()
builder.MakeShell(topods_shell)
builder.Add(topods_shell, face.object)
return Shell(topods_shell)