def combine_faces(compshape, sew_tolerance):
"""
Method to combine faces in a shell by adding connectivity and continuity
:param compshape: TopoDS_Shape
:param sew_tolerance: tolerance for sewing
:return: Topo_Shell
"""
offsew = BRepOffsetAPI_FindContigousEdges(sew_tolerance)
sew = BRepBuilderAPI_Sewing(sew_tolerance)
face_explorers = TopExp_Explorer(compshape, TopAbs_FACE)
n_faces = 0
# cycle on Faces
while face_explorers.More():
tface = topods.Face(face_explorers.Current())
sew.Add(tface)
offsew.Add(tface)
n_faces += 1
face_explorers.Next()
offsew.Perform()
offsew.Dump()
sew.Perform()
shell = sew.SewedShape()
sew.Dump()
shell = topods.Shell(shell)
shell_fixer = ShapeFix_Shell()
shell_fixer.FixFaceOrientation(shell)
if shell_fixer.Perform():
print("{} shells fixed! ".format(shell_fixer.NbShells()))
else:
print "Shells not fixed! "
new_shell = shell_fixer.Shell()
if brepalgo_IsValid(new_shell):
print "Shell valid! "
else:
print "Shell failed! "
return new_shell
def sew_shapes(shapes, tolerance=0.001, verbose=False):
sew = BRepBuilderAPI_Sewing(tolerance)
for shp in shapes:
if isinstance(shp, list):
for i in shp:
sew.Add(i)
else:
sew.Add(shp)
sew.Perform()
# print("n degenerated shapes", sew.NbDegeneratedShapes())
# print("n deleted faces:", sew.NbDeletedFaces())
# print("n free edges", sew.NbFreeEdges())
# print("n multiple edges:", sew.NbMultipleEdges())
if verbose is True:
sew.Dump()
result = ShapeToTopology()(sew.SewedShape())
# sew.Delete()
return result