def __init__(self):
plotocc.__init__(self)
self.b1 = gen_ellipsoid(axs=gp_Ax3(
gp_Pnt(0, 0, 0), gp_Dir(0, 0, 1)), rxyz=[100, 100, 105])
self.b2 = gen_ellipsoid(axs=gp_Ax3(
gp_Pnt(0, 0, 0), gp_Dir(0, 0, 1)), rxyz=[210, 210, 210])
self.base = BRepAlgoAPI_Cut(self.b2, self.b1).Shape()
self.beam = gp_Ax3(gp_Pnt(0, 150, 0), gp_Dir(1, 1.5, 0))
print(self.b1)
top = Topo(self.base)
print(top.number_of_faces())
def get_vertices(shape, length):
bt = BRep.BRep_Tool()
t = Topo(shape)
vertices = t.vertices()
vert = []
for vertex in vertices:
vert.append([
correctLengt(bt.Pnt(vertex).Coord()[0], length, None),
correctLengt(bt.Pnt(vertex).Coord()[1], length, None),
correctLengt(bt.Pnt(vertex).Coord()[2], length, None)
])
return vert
class LoopWirePairs(object):
"""
for looping through consequtive wires
assures that the returned edge pairs are ordered
"""
def __init__(self, wireA, wireB):
self.wireA = wireA
self.wireB = wireB
self.we_A = WireExplorer(self.wireA)
self.we_B = WireExplorer(self.wireB)
self.tp_A = Topo(self.wireA)
self.tp_B = Topo(self.wireB)
self.bt = BRep_Tool()
self.vertsA = [v for v in self.we_A.ordered_vertices()]
self.vertsB = [v for v in self.we_B.ordered_vertices()]
self.edgesA = [v for v in WireExplorer(wireA).ordered_edges()]
self.edgesB = [v for v in WireExplorer(wireB).ordered_edges()]
self.pntsB = [self.bt.Pnt(v) for v in self.vertsB]
self.number_of_vertices = len(self.vertsA)
self.index = 0
def closest_point(self, vertexFromWireA):
pt = self.bt.Pnt(vertexFromWireA)
distances = [pt.Distance(i) for i in self.pntsB]
indx_max_dist = distances.index(min(distances))
return self.vertsB[indx_max_dist]
def next(self):
if self.index == self.number_of_vertices:
raise StopIteration
vert = self.vertsA[self.index]
closest = self.closest_point(vert)
edges_a = self.tp_A.edges_from_vertex(vert)
edges_b = self.tp_B.edges_from_vertex(closest)
a1, a2 = Edge(next(edges_a)), Edge(next(edges_a))
b1, b2 = Edge(next(edges_b)), Edge(next(edges_b))
mpA = a1.mid_point()
self.index += 1
if mpA.Distance(b1.mid_point()) < mpA.Distance(b2.mid_point()):
return iter([a1, a2]), iter([b1, b2])
else:
return iter([a1, a2]), iter([b2, b1])
def __iter__(self):
return self
class LoopWirePairs(object):
'''
for looping through consequtive wires
assures that the returned edge pairs are ordered
'''
def __init__(self, wireA, wireB):
self.wireA = wireA
self.wireB = wireB
self.we_A = WireExplorer(self.wireA)
self.we_B = WireExplorer(self.wireB)
self.tp_A = Topo(self.wireA)
self.tp_B = Topo(self.wireB)
self.bt = BRep_Tool()
self.vertsA = [v for v in self.we_A.ordered_vertices()]
self.vertsB = [v for v in self.we_B.ordered_vertices()]
self.edgesA = [v for v in WireExplorer(wireA).ordered_edges()]
self.edgesB = [v for v in WireExplorer(wireB).ordered_edges()]
self.pntsB = [self.bt.Pnt(v) for v in self.vertsB]
self.number_of_vertices = len(self.vertsA)
self.index = 0
def closest_point(self, vertexFromWireA):
pt = self.bt.Pnt(vertexFromWireA)
distances = [pt.Distance(i) for i in self.pntsB]
indx_max_dist = distances.index(min(distances))
return self.vertsB[indx_max_dist]
def next(self):
if self.index == self.number_of_vertices:
raise StopIteration
vert = self.vertsA[self.index]
closest = self.closest_point(vert)
edges_a = self.tp_A.edges_from_vertex(vert)
edges_b = self.tp_B.edges_from_vertex(closest)
a1, a2 = Edge(next(edges_a)), Edge(next(edges_a))
b1, b2 = Edge(next(edges_b)), Edge(next(edges_b))
mpA = a1.mid_point()
self.index += 1
if mpA.Distance(b1.mid_point()) < mpA.Distance(b2.mid_point()):
return iter([a1, a2]), iter([b1, b2])
else:
return iter([a1, a2]), iter([b2, b1])
def __iter__(self):
return self
def display(topo):
#http://www.opencascade.org/org/forum/thread_18374/
#http://adl.serveftp.org/lab/opencascade/pdf/visu.pdf
#shape = displays[curr_tab].DisplayShape(topo, update=False).GetObject()
#shape.SetDisplayMode(0)
#displays[curr_tab].DisplayColoredShape(topo, 'BLUE', False)
mat = Graphic3d_MaterialAspect(Graphic3d_NOM_SILVER)
displays[curr_tab].DisplayShape(topo, material=mat, update=False)
t = Topo(topo)
wires = t.wires()
for w in wires:
#print w
#displays[curr_tab].DisplayColoredShape(w, 'BLACK', False)
edges.append(w)
def make_EllipWire(self,
rxy=[1.0, 1.0],
shft=0.0,
skin=None,
axs=gp_Ax3()):
rx, ry = rxy
if rx > ry:
major_radi = rx
minor_radi = ry
axis = gp_Ax2()
axis.SetXDirection(axis.XDirection())
else:
major_radi = ry
minor_radi = rx
axis = gp_Ax2()
axis.SetXDirection(axis.YDirection())
axis.Rotate(axis.Axis(), np.deg2rad(shft))
elip = make_edge(gp_Elips(axis, major_radi, minor_radi))
poly = make_wire(elip)
poly.Location(set_loc(gp_Ax3(), axs))
if skin == None:
return poly
else:
n_sided = BRepFill_Filling()
for e in Topo(poly).edges():
n_sided.Add(e, GeomAbs_C0)
n_sided.Build()
face = n_sided.Face()
if skin == 0:
return face
else:
solid = BRepOffset_MakeOffset(face, skin, 1.0E-5,
BRepOffset_Skin, False, True,
GeomAbs_Arc, True, True)
return solid.Shape()
def make_StarWire(self,
num=5,
radi=[2.0, 1.0],
shft=0.0,
axs=gp_Ax3(),
skin=None):
lxy = radi
pnts = []
angl = 360 / num
for i in range(num):
a_thet = np.deg2rad(i * angl) + np.deg2rad(shft)
ax, ay = radi[0] * np.sin(a_thet), radi[0] * np.cos(a_thet)
pnts.append(gp_Pnt(ax, ay, 0))
b_thet = a_thet + np.deg2rad(angl) / 2
bx, by = radi[1] * np.sin(b_thet), radi[1] * np.cos(b_thet)
pnts.append(gp_Pnt(bx, by, 0))
pnts.append(pnts[0])
poly = make_polygon(pnts)
poly.Location(set_loc(gp_Ax3(), axs))
n_sided = BRepFill_Filling()
for e in Topo(poly).edges():
n_sided.Add(e, GeomAbs_C0)
n_sided.Build()
face = n_sided.Face()
if skin == None:
return poly
elif skin == 0:
return face
else:
solid = BRepOffset_MakeOffset(face, skin, 1.0E-5, BRepOffset_Skin,
False, True, GeomAbs_Arc, True, True)
return solid.Shape()
def __init__(self, wireA, wireB):
self.wireA = wireA
self.wireB = wireB
self.we_A = WireExplorer(self.wireA)
self.we_B = WireExplorer(self.wireB)
self.tp_A = Topo(self.wireA)
self.tp_B = Topo(self.wireB)
self.bt = BRep_Tool()
self.vertsA = [v for v in self.we_A.ordered_vertices()]
self.vertsB = [v for v in self.we_B.ordered_vertices()]
self.edgesA = [v for v in WireExplorer(wireA).ordered_edges()]
self.edgesB = [v for v in WireExplorer(wireB).ordered_edges()]
self.pntsB = [self.bt.Pnt(v) for v in self.vertsB]
self.number_of_vertices = len(self.vertsA)
self.index = 0
def __init__(self, wireA, wireB):
self.wireA = wireA
self.wireB = wireB
self.we_A = WireExplorer(self.wireA)
self.we_B = WireExplorer(self.wireB)
self.tp_A = Topo(self.wireA)
self.tp_B = Topo(self.wireB)
self.bt = BRep_Tool()
self.vertsA = [v for v in self.we_A.ordered_vertices()]
self.vertsB = [v for v in self.we_B.ordered_vertices()]
self.edgesA = [v for v in WireExplorer(wireA).ordered_edges()]
self.edgesB = [v for v in WireExplorer(wireB).ordered_edges()]
self.pntsB = [self.bt.Pnt(v) for v in self.vertsB]
self.number_of_vertices = len(self.vertsA)
self.index = 0
def set_surface(filename):
if os.path.exists(filename):
shp = read_step_file(filename)
for face in Topo(shp).faces():
surf = face
else:
surf = make_plane()
return surf
def analyse(self):
"""
:return:
"""
ss = ShapeAnalysis_Shell(self)
if ss.HasFreeEdges():
bad_edges = [e for e in Topo(ss.BadEdges()).edges()]
return bad_edges
def build_curve_network(event=None):
'''
mimic the curve network surfacing command from rhino
'''
print('Importing IGES file...', end='')
iges = IGESImporter('./curve_geom_plate.igs')
iges.read_file()
iges_cpd = iges.get_compound()
print('done.')
print('Building geomplate...', end='')
topo = Topo(iges_cpd)
edges_list = list(topo.edges())
face = build_geom_plate(edges_list)
print('done.')
display.EraseAll()
display.DisplayShape(edges_list)
display.DisplayShape(face)
display.FitAll()
print('Cutting out of edges...')
def build_curve_network(event=None):
'''
mimic the curve network surfacing command from rhino
'''
print('Importing IGES file...', end='')
iges = IGESImporter('./curve_geom_plate.igs')
iges.read_file()
iges_cpd = iges.get_compound()
print('done.')
print('Building geomplate...', end='')
topo = Topo(iges_cpd)
edges_list = list(topo.edges())
face = build_geom_plate(edges_list)
print('done.')
display.EraseAll()
display.DisplayShape(edges_list)
display.DisplayShape(face)
display.FitAll()
print('Cutting out of edges...')
def geom_plate(event=None):
display.EraseAll()
p1 = gp_Pnt(0, 0, 0)
p2 = gp_Pnt(0, 10, 0)
p3 = gp_Pnt(0, 10, 10)
p4 = gp_Pnt(0, 0, 10)
p5 = gp_Pnt(5, 5, 5)
poly = make_closed_polygon([p1, p2, p3, p4])
edges = [i for i in Topo(poly).edges()]
face = make_n_sided(edges, [p5])
display.DisplayShape(edges)
display.DisplayShape(make_vertex(p5))
display.DisplayShape(face, update=True)
def test_step_exporter_overwrite(box_shape):
r"""Happy path with a subclass of TopoDS_Shape"""
filename = path_from_file(__file__, "./models_out/box.stp")
exporter = StepExporter(filename)
solid = shape_to_topology(box_shape)
assert isinstance(solid, TopoDS.TopoDS_Solid)
exporter.add_shape(solid)
exporter.write_file()
initial_timestamp = os.path.getmtime(filename)
assert os.path.isfile(filename)
# read the written box.stp
importer = StepImporter(filename)
topo_compound = Topo(importer.compound)
assert topo_compound.number_of_faces() == 6
assert len([i for i in topo_compound.faces()]) == 6
assert topo_compound.number_of_edges() == 12
# add a sphere and write again with same exporter
sphere = BRepPrimAPI.BRepPrimAPI_MakeSphere(10)
exporter.add_shape(sphere.Shape())
exporter.write_file() # this creates a file with a box and a sphere
intermediate_timestamp = os.path.getmtime(filename)
assert intermediate_timestamp >= initial_timestamp
# check that the file contains the box and the sphere
importer = StepImporter(filename)
assert len([i for i in Topo(importer.compound).faces()]) == 7 # 6 from box + 1 from sphere
assert len([i for i in Topo(importer.compound).solids()]) == 2
# create a new exporter and overwrite with a box only
filename = path_from_file(__file__, "./models_out/box.stp")
exporter = StepExporter(filename)
solid = shape_to_topology(box_shape)
exporter.add_shape(solid)
exporter.write_file()
assert os.path.isfile(filename)
last_timestamp = os.path.getmtime(filename)
assert last_timestamp >= intermediate_timestamp
# check the file only contains a box
importer = StepImporter(filename)
assert len([i for i in Topo(importer.compound).faces()]) == 6 # 6 from box
assert len([i for i in Topo(importer.compound).solids()]) == 1
def test_iges_exporter_overwrite(box_shape):
r"""Happy path with a subclass of TopoDS_Shape"""
filename = path_from_file(__file__, "./models_out/box.igs")
exporter = IgesExporter(filename)
solid = shape_to_topology(box_shape)
assert isinstance(solid, TopoDS.TopoDS_Solid)
exporter.add_shape(solid)
exporter.write_file()
assert os.path.isfile(filename)
# read the written box.igs
importer = IgesImporter(filename)
topo_compound = Topo(importer.compound)
assert topo_compound.number_of_faces() == 6
assert topo_compound.number_of_edges() == 24
# add a sphere and write again with same exporter
sphere = BRepPrimAPI.BRepPrimAPI_MakeSphere(10)
exporter.add_shape(sphere.Shape())
exporter.write_file() # this creates a file with a box and a sphere
# check that the file contains the box and the sphere
importer = IgesImporter(filename)
topo_compound = Topo(importer.compound)
assert topo_compound.number_of_faces() == 7 # 6 from box + 1 from sphere
# create a new exporter and overwrite with a box only
filename = path_from_file(__file__, "./models_out/box.igs")
exporter = IgesExporter(filename)
solid = shape_to_topology(box_shape)
exporter.add_shape(solid)
exporter.write_file()
assert os.path.isfile(filename)
# check the file only contains a box
importer = IgesImporter(filename)
topo_compound = Topo(importer.compound)
assert topo_compound.number_of_faces() == 6 # 6 from box
def corners(house):
d = {}
iface = -1
topo = Topo(house['volume'])
house['boundaries'] = {'walls': [], 'windows': [], 'heats': []}
house['faces'] = []
for f in topo.wires():
iface += 1
key = 'face' + str(iface)
print 'new_face'
edges = []
d[key] = []
topof = Topo(f)
for e in topof.edges():
vts = Topo(e)
print 'edge'
edge = []
for i, v in enumerate(vts.vertices()):
brt = BRep_Tool()
pnt = brt.Pnt(topods_Vertex(v))
edge.append([pnt.X(), pnt.Y(), pnt.Z()])
edges.append(edge)
print len(edges)
first_edge = edges.pop(0)
point_array = [first_edge[0], first_edge[1]]
print 'edges :'
for e in edges:
print e
print '-------'
while len(edges) > 0:
for i, e in enumerate(edges):
if point_array[-1] in e:
ed = edges.pop(i)
print point_array[-1]
if ed[0] == point_array[-1]: point_array.append(ed[1])
elif ed[1] == point_array[-1]: point_array.append(ed[0])
break
d[key] = point_array
house['faces'].append(point_array)
return d
def test_stl_exporter_overwrite(box_shape):
r"""Happy path with a subclass of TopoDS_Shape"""
filename = path_from_file(__file__, "./models_out/box.stl")
exporter = StlExporter(filename)
solid = shape_to_topology(box_shape)
assert isinstance(solid, TopoDS.TopoDS_Solid)
exporter.set_shape(solid)
exporter.write_file()
assert os.path.isfile(filename)
# read the written box.stl
importer = StlImporter(filename)
topo = Topo(importer.shape)
assert topo.number_of_shells() == 1
# set a sphere and write again with same exporter
sphere = BRepPrimAPI.BRepPrimAPI_MakeSphere(10)
exporter.set_shape(sphere.Shape())
exporter.write_file(
) # this creates a file with a sphere only, this is STL specific
# check that the file contains the sphere only
importer = StlImporter(filename)
topo = Topo(importer.shape)
assert topo.number_of_shells() == 1
# create a new exporter and overwrite with a box only
filename = path_from_file(__file__, "./models_out/box.stl")
exporter = StlExporter(filename)
solid = shape_to_topology(box_shape)
exporter.set_shape(solid)
exporter.write_file()
assert os.path.isfile(filename)
# check the file only contains a box
importer = StlImporter(filename)
topo = Topo(importer.shape)
assert topo.number_of_shells() == 1
def __init__(self):
plotocc.__init__(self)
print(gxyz.shape)
for i, xyz in enumerate(gxyz):
print(i, *xyz)
self.display.DisplayShape(gp_Pnt(*xyz))
e_array = []
for e in xyz_max:
x, y, z = e
e = gp_Pnt(float(x), float(y), float(z))
e_array.append(e)
e_array.append(e_array[0])
poly = make_polygon(e_array)
n_sided = BRepFill_Filling()
for e in Topo(poly).edges():
n_sided.Add(e, GeomAbs_C0)
for pt in gxyz:
x, y, z = pt
if (x < xmax) and (x > xmin) and (y < ymax) and (y > ymin) and (
z < zmax) and (z > zmin):
n_sided.Add(gp_Pnt(x, y, z))
n_sided.Build()
face = n_sided.Face()
#face = make_n_sided(edges, p_array)
# THICKEN SURFACE
thickness = 0.15
solid = BRepOffset_MakeOffset(face, thickness, 1.0E-5, BRepOffset_Skin,
False, False, GeomAbs_Intersection, True)
# The last True is important to make solid
# solid.MakeOffsetShape()
# solid.MakeThickSolid()
#aShape = solid.Shape()
self.display.DisplayShape(poly)
self.display.DisplayShape(face)
#display.DisplayShape(aShape, update=True)
#write_step_file(aShape, "./tmp/gyroid.stp")
self.export_stp(solid.Shape())
def export_rim_2d(self, rimfile="pln1.rim", name="pln1-rim"):
rim_2d = dispocc.proj_rim_pln(self, self.rim, self.pln, self.axs)
fp = open(rimfile, "w")
fp.write(' {:s}\n'.format(name))
fp.write('{:12d}{:12d}{:12d}\n'.format(1, 1, 1))
rim_tmp = gp_Pnt()
for i, e in enumerate(Topo(rim_2d).edges()):
e_curve, u0, u1 = BRep_Tool.Curve(e)
print(i, e, u0, u1)
if i != 0 and rim_tmp == e_curve.Value(u0):
u_range = np.linspace(u0, u1, 50)
rim_tmp = e_curve.Value(u1)
p = e_curve.Value(u0)
p.Transform(set_trf(self.axs, gp_Ax3()))
data = [p.X(), p.Y()]
print(0, p, u_range[0], u_range[-1])
elif i != 0 and rim_tmp == e_curve.Value(u1):
u_range = np.linspace(u1, u0, 50)
rim_tmp = e_curve.Value(u0)
p = e_curve.Value(u1)
p.Transform(set_trf(self.axs, gp_Ax3()))
data = [p.X(), p.Y()]
print(1, p, u_range[0], u_range[-1])
else:
u_range = np.linspace(u0, u1, 50)
rim_tmp = e_curve.Value(u1)
p = e_curve.Value(u0)
p.Transform(set_trf(self.axs, gp_Ax3()))
data = [p.X(), p.Y()]
print(2, p, u_range[0], u_range[-1])
fp.write(''.join([float_to_string(val) for val in data]) + '\n')
for u in u_range[1:]:
p = e_curve.Value(u)
p.Transform(set_trf(self.axs, gp_Ax3()))
data = [p.X(), p.Y()]
fp.write(''.join([float_to_string(val)
for val in data]) + '\n')
fp.close()
def test_check_shape():
r"""check_shape() tests"""
# Null shapes should raise a ValueError
with pytest.raises(ValueError):
check_shape(TopoDS.TopoDS_Shape())
with pytest.raises(ValueError):
check_shape(TopoDS.TopoDS_Shell())
builderapi_makeedge = BRepBuilderAPI.BRepBuilderAPI_MakeEdge(
gp.gp_Pnt(), gp.gp_Pnt(10, 10, 10))
shape = builderapi_makeedge.Shape()
# a ValueError should be raised is check_shape() is not give a TopoDS_Shape or subclass
with pytest.raises(ValueError):
check_shape(gp.gp_Pnt())
with pytest.raises(ValueError):
check_shape(builderapi_makeedge)
# a TopoDS_Shape should pass the check without raising any exception
check_shape(shape)
# a subclass of shape should not raise any exception
check_shape(next(Topo(shape).edges()))
def fit_plane_through_face_vertices(_face):
"""
:param _face: OCC.KBE.face.Face instance
:return: Geom_Plane
"""
from OCC.Core.GeomPlate import GeomPlate_BuildAveragePlane
uvs_from_vertices = [
_face.project_vertex(vertex2pnt(i)) for i in Topo(_face).vertices()
]
normals = [
gp_Vec(_face.DiffGeom.normal(*uv[0])) for uv in uvs_from_vertices
]
points = [i[1] for i in uvs_from_vertices]
NORMALS = TColgp_SequenceOfVec()
[NORMALS.Append(i) for i in normals]
POINTS = to_tcol_(points, TColgp_HArray1OfPnt)
pl = GeomPlate_BuildAveragePlane(NORMALS, POINTS).Plane().GetObject()
vec = gp_Vec(pl.Location(), _face.GlobalProperties.centre())
pt = (pl.Location().as_vec() + vec).as_pnt()
pl.SetLocation(pt)
return pl
def make_FaceByOrder(self, pts=[]):
pnt = []
for p in pts:
pnt.append([p.X(), p.Y(), p.Z()])
pnt = np.array(pnt)
cov = ConvexHull(pnt, qhull_options='QJ')
#pts_ord = []
# print(cov)
# print(cov.simplices)
# print(cov.vertices)
# for idx in cov.vertices:
# print(idx, pnt[idx])
# pts_ord.append(gp_Pnt(*pnt[idx]))
#poly = make_polygon(pts_ord)
poly = make_polygon(pts)
n_sided = BRepFill_Filling()
for e in Topo(poly).edges():
n_sided.Add(e, GeomAbs_C0)
n_sided.Build()
face = n_sided.Face()
return face
def test_stl_importer_happy_topology():
r"""import iges file containing a box and test topology"""
# binary STL
importer = StlImporter(path_from_file(__file__, "./models_in/box_binary.stl"))
topo = Topo(importer.shape)
# assert len(topo.solids()) == 1
assert len([i for i in topo.shells()]) == 1
assert next(topo.shells()).Closed() is True # direct method on TopoDS_Shell
assert len([i for i in topo.faces()]) == 108
assert len([i for i in topo.edges()]) == 162
# ascii STL
importer = StlImporter(path_from_file(__file__, "./models_in/box_ascii.stl"))
topo = Topo(importer.shape)
# assert len(topo.solids) == 1
assert len([i for i in topo.shells()]) == 1
assert next(topo.shells()).Closed() is True
assert len([i for i in topo.faces()]) == 108
assert len([i for i in topo.edges()]) == 162
"""
sae = ShapeAnalysis_Edge()
return sae.IsSeam(self, face)
def is_edge_on_face(self, face):
'''checks whether curve lies on a surface or a face
'''
return ShapeAnalysis_Edge().HasPCurve(self, face)
#===========================================================================
# Curve.graphic
#===========================================================================
def show(self):
'''
poles, knots, should render all slightly different.
here's how...
http://www.opencascade.org/org/forum/thread_1125/
'''
super(Edge, self).show()
if __name__ == '__main__':
from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox
from OCCUtils.Topology import Topo
b = BRepPrimAPI_MakeBox(10, 20, 30).Shape()
t = Topo(b)
ed = next(t.edges())
my_e = Edge(ed)
print(my_e.tolerance)
def max_counter(self, facesS_2):
section_edges = list(Topo(facesS_2).edges())
# print(len(section_edges))
if len(section_edges) > 0:
Wire_c = BRepBuilderAPI_MakeWire()
prep_list = []
Wire_c.Add(section_edges[0])
prep_list.append(section_edges[0])
ex = TopExp_Explorer(section_edges[0], TopAbs_VERTEX)
# no need for a loop since we know for a fact that
# the edge has only one start and one end
c = ex.Current()
cv = topods_Vertex(c)
v0 = BRep_Tool_Pnt(cv)
ex.Next()
c = ex.Current()
cv = topods_Vertex(c)
v1 = BRep_Tool_Pnt(cv)
section_edges.pop(0)
flag = 0
wires = []
while len(section_edges) > 0:
new_list = []
for edges in section_edges:
# Wire_c.Add(edges)
ex = TopExp_Explorer(edges, TopAbs_VERTEX)
c = ex.Current()
cv = topods_Vertex(c)
End_1 = BRep_Tool_Pnt(cv)
ex.Next()
c = ex.Current()
cv = topods_Vertex(c)
End_2 = BRep_Tool_Pnt(cv)
if End_1.X() == v0.X() and End_1.Y() == v0.Y() and End_1.Z(
) == v0.Z():
Wire_c.Add(edges)
v0 = End_2
flag = 0
elif End_1.X() == v1.X() and End_1.Y() == v1.Y(
) and End_1.Z() == v1.Z():
Wire_c.Add(edges)
v1 = End_2
flag = 0
elif End_2.X() == v0.X() and End_2.Y() == v0.Y(
) and End_2.Z() == v0.Z():
Wire_c.Add(edges)
v0 = End_1
flag = 0
elif End_2.X() == v1.X() and End_2.Y() == v1.Y(
) and End_2.Z() == v1.Z():
Wire_c.Add(edges)
v1 = End_1
flag = 0
else:
new_list.append(edges)
flag += 1
section_edges = new_list
if flag >= 5:
# print('number_ostalos', len(section_edges))
wires.append(Wire_c.Wire())
Wire_c = BRepBuilderAPI_MakeWire()
Wire_c.Add(section_edges[0])
ex = TopExp_Explorer(section_edges[0], TopAbs_VERTEX)
# no need for a loop since we know for a fact that
# the edge has only one start and one end
c = ex.Current()
cv = topods_Vertex(c)
v0 = BRep_Tool_Pnt(cv)
ex.Next()
c = ex.Current()
cv = topods_Vertex(c)
v1 = BRep_Tool_Pnt(cv)
section_edges.pop(0)
flag = 0
wires.append(Wire_c.Wire())
areas = []
props = GProp_GProps()
for wire in wires:
brown_face = BRepBuilderAPI_MakeFace(wire)
brown_face = brown_face.Face()
# props = GProp_GProps()
brepgprop_SurfaceProperties(brown_face, props)
areas.append(props.Mass())
return max(areas)
else:
return 0
"""
sae = ShapeAnalysis_Edge()
return sae.IsSeam(self, face)
def is_edge_on_face(self, face):
'''checks whether curve lies on a surface or a face
'''
return ShapeAnalysis_Edge().HasPCurve(self, face)
#===========================================================================
# Curve.graphic
#===========================================================================
def show(self):
'''
poles, knots, should render all slightly different.
here's how...
http://www.opencascade.org/org/forum/thread_1125/
'''
super(Edge, self).show()
if __name__ == '__main__':
from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox
from OCCUtils.Topology import Topo
b = BRepPrimAPI_MakeBox(10, 20, 30).Shape()
t = Topo(b)
ed = next(t.edges())
my_e = Edge(ed)
print(my_e.tolerance)
def Edges(self):
return Topo(self, True).edges()
def Wires(self):
"""
:return:
"""
return Topo(self, True).wires()
def Faces(self):
"""
:return:
"""
return Topo(self, True).faces()
def shells(self):
return (Shell(sh) for sh in Topo(self))
def get_face(self, sol):
top_api = Topo(sol)
print(top_api.number_of_faces())
for face in top_api.faces():
sol_face = face
return sol_face
def topo(self):
if self._topo is not None:
return self._topo
else:
self._topo = Topo(self)
return self._topo
def test_stl_importer_2_boxes():
r"""Import an iges file containing 2 distinct boxes and test topology
Notes
-----
This shows the current limitations of the IgesImporter as 2 boxes cannot be distinguished from one another
"""
# binary STL
importer = StlImporter(path_from_file(__file__, "./models_in/2_boxes_binary.stl"))
topo = Topo(importer.shape)
assert len([i for i in topo.shells()]) == 2
assert next(topo.shells()).Closed() is True
assert [i for i in topo.shells()][1].Closed() is True
assert topo.number_of_faces() == 108 * 2
assert topo.number_of_edges() == 162 * 2
# ascii STL
importer = StlImporter(path_from_file(__file__, "./models_in/2_boxes_ascii.stl"))
topo = Topo(importer.shape)
assert len([i for i in topo.shells()]) == 2
assert next(topo.shells()).Closed() is True
assert [i for i in topo.shells()][1].Closed() is True
assert topo.number_of_faces() == 108 * 2
assert topo.number_of_edges() == 162 * 2