def sew(self, *other_parts):
"""
Sew with other parts and rebuild all parts.
:param afem.structure.entities.SurfacePart other_parts: The other
part(s).
:return: *True* if sewed, *False* if not.
:rtype: bool
"""
parts = [self] + list(other_parts)
shapes = [self._shape] + [part.shape for part in other_parts]
tol = float(mean([shape.tol_avg for shape in shapes], dtype=float))
max_tol = max([shape.tol_max for shape in shapes])
sew = SewShape(tol=tol,
max_tol=max_tol,
cut_free_edges=True,
non_manifold=True)
for part in parts:
sew.add(part.shape)
sew.perform()
for part in parts:
if not sew.is_modified(part.shape):
continue
mod_shape = sew.modified(part.shape)
part.set_shape(mod_shape)
return True
def __init__(self, parts, tol=None, max_tol=None):
parts = list(parts)
shapes = [part.shape for part in parts]
if tol is None:
tol = mean([shape.tol_avg for shape in shapes], dtype=float)
if max_tol is None:
max_tol = max([shape.tol_max for shape in shapes])
sew = SewShape(tol=tol, max_tol=max_tol, cut_free_edges=True,
non_manifold=True)
for part in parts:
sew.add(part.shape)
sew.perform()
for part in parts:
if not sew.is_modified(part.shape):
continue
mod_shape = sew.modified(part.shape)
part.set_shape(mod_shape)
def _build_solid(compound, divide_closed):
"""
Try to build a solid from the OpenVSP compound of faces.
:param afem.topology.entities.Compound compound: The compound.
:param bool divide_closed: Option to divide closed faces.
:return: The solid.
:rtype: afem.topology.entities.Solid
"""
# Get all the faces in the compound. The surfaces must be split. Discard
# any with zero area.
faces = []
for face in compound.faces:
area = SurfaceProps(face).area
if area > 1.0e-7:
faces.append(face)
# Replace any planar B-Spline surfaces with planes.
non_planar_faces = []
planar_faces = []
for f in faces:
srf = f.surface
try:
pln = srf.as_plane()
if pln:
w = f.outer_wire
# Fix the wire because they are usually degenerate edges in
# the planar end caps.
builder = BRepBuilderAPI_MakeWire()
for e in w.edges:
if LinearProps(e).length > 1.0e-7:
builder.Add(e.object)
w = builder.Wire()
fix = ShapeFix_Wire()
fix.Load(w)
fix.SetSurface(pln.object)
fix.FixReorder()
fix.FixConnected()
fix.FixEdgeCurves()
fix.FixDegenerated()
w = Wire(fix.WireAPIMake())
fnew = Face.by_wire(w)
planar_faces.append(fnew)
else:
non_planar_faces.append(f)
except RuntimeError:
logger.info('Failed to check for planar face...')
non_planar_faces.append(f)
# Make a compound of the faces
shape = Compound.by_shapes(non_planar_faces + planar_faces)
# Split closed faces
if divide_closed:
shape = DivideClosedShape(shape).shape
# Sew shape
sewn_shape = SewShape(shape).sewed_shape
if isinstance(sewn_shape, Face):
sewn_shape = sewn_shape.to_shell()
# Attempt to unify planar domains
shell = UnifyShape(sewn_shape).shape
# Make solid
if not isinstance(shell, Shell):
logger.info('\tA valid shell was not able to be generated.')
check = CheckShape(shell)
if not check.is_valid:
logger.info('\tShape errors:')
check.log_errors()
return shell, check.invalid_shapes
solid = Solid.by_shell(shell)
# Limit tolerance
FixShape.limit_tolerance(solid)
# Check the solid and attempt to fix
invalid = []
check = CheckShape(solid)
if not check.is_valid:
logger.info('\tFixing the solid...')
solid = FixShape(solid).shape
check = CheckShape(solid)
if not check.is_valid:
logger.info('\t...solid could not be fixed.')
logger.info('\tShape errors:')
check.log_errors()
failed = check.invalid_shapes
invalid += failed
else:
tol = solid.tol_avg
logger.info(
'\tSuccessfully generated solid with tolerance={}'.format(tol))
return solid, invalid