def stitch(self, other):
"""Attempt to stich wires"""
wire_builder = BRepBuilderAPI_MakeWire()
wire_builder.Add(topods_Wire(self.wrapped))
wire_builder.Add(topods_Wire(other.wrapped))
wire_builder.Build()
return self.__class__(wire_builder.Wire())
def topo2topotype(occtopology):
"""
This function converts the original OCCtopology of the given topology. e.g. an OCCcompound that is originally an OCCface etc.
Parameters
----------
occtopology : OCCtopology
The OCCtopology to be converted.
OCCtopology includes: OCCshape, OCCcompound, OCCcompsolid, OCCsolid, OCCshell, OCCface, OCCwire, OCCedge, OCCvertex
Returns
-------
original topology : OCCtopology
The original OCCtopology of the input.
"""
shapetype = occtopology.ShapeType()
if shapetype == TopAbs_COMPOUND:#compound
orig_topo = topods_Compound(occtopology)
if shapetype == TopAbs_COMPSOLID:#compsolid
orig_topo = topods_CompSolid(occtopology)
if shapetype == TopAbs_SOLID:#solid
orig_topo = topods_Solid(occtopology)
if shapetype == TopAbs_SHELL:#shell
orig_topo = topods_Shell(occtopology)
if shapetype == TopAbs_FACE:#face
orig_topo = topods_Face(occtopology)
if shapetype == TopAbs_WIRE:#wire
orig_topo = topods_Wire(occtopology)
if shapetype == TopAbs_EDGE:#edge
orig_topo = topods_Edge(occtopology)
if shapetype == TopAbs_VERTEX:#vertex
orig_topo = topods_Vertex(occtopology)
return orig_topo
def topo_explorer(occtopo2explore, topotype2find):
"""
This function explores and fetches the specified topological type from the given OCCtopology.
e.g. find a list of OCCfaces in an OCCcompound.
Parameters
----------
occtopo2explore : OCCtopology
The OCCtopology to be explored.
OCCtopology includes: OCCshape, OCCcompound, OCCcompsolid, OCCsolid, OCCshell, OCCface, OCCwire, OCCedge, OCCvertex
topotype2find : str
The string describing the topology to find.
The strings can be e.g. "compound", "compsolid", "solid", "shell", "face", "wire", "edge", "vertex".
Returns
-------
list of topology : list of OCCtopology
The list of OCCtopology found in the specified OCCtopology.
"""
geom_list = []
if topotype2find == "compound":
shapetype2find_topABS = TopAbs_COMPOUND
if topotype2find == "compsolid":
shapetype2find_topABS = TopAbs_COMPSOLID
if topotype2find == "solid":
shapetype2find_topABS = TopAbs_SOLID
if topotype2find == "shell":
shapetype2find_topABS = TopAbs_SHELL
if topotype2find == "face":
shapetype2find_topABS = TopAbs_FACE
if topotype2find == "wire":
shapetype2find_topABS = TopAbs_WIRE
if topotype2find == "edge":
shapetype2find_topABS = TopAbs_EDGE
if topotype2find == "vertex":
shapetype2find_topABS = TopAbs_VERTEX
ex = TopExp_Explorer(occtopo2explore, shapetype2find_topABS)
while ex.More():
if shapetype2find_topABS == 0:
geom = topods_Compound(ex.Current())
if shapetype2find_topABS == 1:
geom = topods_CompSolid(ex.Current())
if shapetype2find_topABS == 2:
geom = topods_Solid(ex.Current())
if shapetype2find_topABS == 3:
geom = topods_Shell(ex.Current())
if shapetype2find_topABS == 4:
geom = topods_Face(ex.Current())
if shapetype2find_topABS == 5:
geom = topods_Wire(ex.Current())
if shapetype2find_topABS == 6:
geom = topods_Edge(ex.Current())
if shapetype2find_topABS == 7:
geom = topods_Vertex(ex.Current())
geom_list.append(geom)
ex.Next()
return geom_list
def iter_wires(shape):
"""
Generator / Iterator over the wire of a shape
"""
exp = TopExp_Explorer(shape, TopAbs_WIRE)
while exp.More():
yield topods_Wire(exp.Current())
exp.Next()
def shape2shapetype(occ_shape):
shapetype = occ_shape.ShapeType()
if shapetype == TopAbs_COMPOUND: #compound
orig_topo = topods_Compound(occ_shape)
if shapetype == TopAbs_COMPSOLID: #compsolid
orig_topo = topods_CompSolid(occ_shape)
if shapetype == TopAbs_SOLID: #solid
orig_topo = topods_Solid(occ_shape)
if shapetype == TopAbs_SHELL: #shell
orig_topo = topods_Shell(occ_shape)
if shapetype == TopAbs_FACE: #face
orig_topo = topods_Face(occ_shape)
if shapetype == TopAbs_WIRE: #wire
orig_topo = topods_Wire(occ_shape)
if shapetype == TopAbs_EDGE: #edge
orig_topo = topods_Edge(occ_shape)
if shapetype == TopAbs_VERTEX: #vertex
orig_topo = topods_Vertex(occ_shape)
return orig_topo
def geom_explorer(geom2explore, shapetype2find):
geom_list = []
if shapetype2find == "compound":
shapetype2find_topABS = TopAbs_COMPOUND
if shapetype2find == "compsolid":
shapetype2find_topABS = TopAbs_COMPSOLID
if shapetype2find == "solid":
shapetype2find_topABS = TopAbs_SOLID
if shapetype2find == "shell":
shapetype2find_topABS = TopAbs_SHELL
if shapetype2find == "face":
shapetype2find_topABS = TopAbs_FACE
if shapetype2find == "wire":
shapetype2find_topABS = TopAbs_WIRE
if shapetype2find == "edge":
shapetype2find_topABS = TopAbs_EDGE
if shapetype2find == "vertex":
shapetype2find_topABS = TopAbs_VERTEX
ex = TopExp_Explorer(geom2explore, shapetype2find_topABS)
while ex.More():
if shapetype2find_topABS == 0:
geom = topods_Compound(ex.Current())
if shapetype2find_topABS == 1:
geom = topods_CompSolid(ex.Current())
if shapetype2find_topABS == 2:
geom = topods_Solid(ex.Current())
if shapetype2find_topABS == 3:
geom = topods_Shell(ex.Current())
if shapetype2find_topABS == 4:
geom = topods_Face(ex.Current())
if shapetype2find_topABS == 5:
geom = topods_Wire(ex.Current())
if shapetype2find_topABS == 6:
geom = topods_Edge(ex.Current())
if shapetype2find_topABS == 7:
geom = topods_Vertex(ex.Current())
geom_list.append(geom)
ex.Next()
return geom_list
step_reader.PrintCheckTransfer(failsonly, IFSelect_ItemsByEntity)
ok = step_reader.TransferRoot(1)
_nbs = step_reader.NbShapes()
aResShape = step_reader.Shape(1)
else:
print("Error: can't read file.")
sys.exit(0)
mydumpTopology(aResShape)
print(len(lstWires))
face = BRepBuilderAPI_MakeFace(topods_Wire(lstWires[-1]))
starting_point = gp_Pnt(0., 0., 0.)
end_point = gp_Pnt(0., 0., 100.)
vec = gp_Vec(starting_point, end_point)
prism = BRepPrimAPI_MakePrism(face.Shape(), vec).Shape()
freecadObj = FreeCADPart.Wire(FreeCADPart.__fromPythonOCC__(lstWires[-1]))
print(str(type(freecadObj)))
cqObj = cq.CQ(freecadObj)
cqObj = Wire(cqObj)
bushing = BRepAlgoAPI_Fuse(bushing, BconeSm).Shape()
BSIN = BOR * math.sin(math.radians(BA))
BCOS = BOR * math.cos(math.radians(BA))
# create and set up transformation for leftBush
ltrsf = gp_Trsf()
ltrsf.SetRotation(gp_Ax1(gp_Pnt(0, 0, 0), gp_Dir(1, 0, 0)), math.radians(BA))
leftBush = BRepBuilderAPI_Transform(bushing, ltrsf).Shape()
ltrsf.SetTranslation(gp_Vec(BIn + BOR, float(TW) / 2 - BS - BCOS, TH - BSIN))
leftBush = BRepBuilderAPI_Transform(leftBush, ltrsf).Shape()
leftBush = BRepAlgoAPI_Cut(leftBush,
tank).Shape() # cut common part of bushing and tank
mooh = BRepAlgoAPI_Section(leftBush, tank).Shape()
wire = topods_Wire(mooh)
face = BRepBuilderAPI_MakeFace(wire).Face()
#leftBush = BRepAlgoAPI_Cut(leftBush,face).Shape()
# create and set up transformation for midBush
mtrsf = gp_Trsf()
mtrsf.SetTranslation(gp_Vec(BIn + BOR, float(TW) / 2, TH))
midBush = BRepBuilderAPI_Transform(bushing, mtrsf).Shape()
# create and set up transformation for rightBush
rtrsf = gp_Trsf()
rtrsf.SetRotation(gp_Ax1(gp_Pnt(0, 0, 0), gp_Dir(1, 0, 0)),
math.radians(360 - BA))
rightBush = BRepBuilderAPI_Transform(bushing, rtrsf).Shape()
rtrsf.SetTranslation(gp_Vec(BIn + BOR, float(TW) / 2 + BS + BCOS, TH - BSIN))
rightBush = BRepBuilderAPI_Transform(rightBush, rtrsf).Shape()
def bordering_wires_of_face(shape, face_shape):
"""
Return dictionary of bordering wires with face shape. This function also
returns list of common edges of bordering wires. Definition of
bordering wire is following: such wire shares at least one edge
with face_shape, but it does not create face_shape.
"""
primitives = brep_explorer.shape_disassembly(shape)
# Create list of wires "to be fixed" (potentially)
wire_shapes_tbf = []
for old_wire_shape in primitives[5].values():
wire_shapes_tbf.append(topods_Wire(old_wire_shape))
old_wires, old_edges, old_verts = entities_of_wires(wire_shapes_tbf)
# Get list of wires at border of shape
new_wire_shapes = wires_of_face(face_shape)
new_wires, new_edges, new_verts = entities_of_wires(new_wire_shapes)
# Dictionary of bordering wires
bordering_wires = {}
# Go through all wires of face_shape (usually only one wire)
for new_wire_key, new_wire_shape in new_wires.items():
print('>>>> Wire of face_shape:', new_wire_shape)
# Go through all edges of bordering wire
for edge_coords in new_wire_key:
new_edge_coords = tuple(sorted(edge_coords))
new_edge = new_edges[new_edge_coords]
print('@@@@ Bordering edge:', new_edge_coords, new_edge)
# Try to find this edge in other wires
for old_wire_key, old_wire in old_wires.items():
# Old wire can't be same as wire from bordering face
# This wire is all right and there is no need to fix it
if new_wire_key == old_wire_key:
continue
# Try to find the edge in all edges of old wire
for old_edge_coord in old_wire_key:
# Is it the edge with same verticies?
if tuple(sorted(old_edge_coord)) == new_edge_coords:
# Old wire containing edge from face_shape was found
print('#### Old Wire to be fixed:', old_wire_key, old_wire)
bordering_wires[old_wire_key] = old_wire
break
print('<<<< Bordering wires:', bordering_wires)
# Try to get list of common edges of bordering wires
all_edges = []
common_edges = {}
for old_wire_key, old_wire in old_wires.items():
if old_wire_key in bordering_wires.keys():
print('^^^^ Edges of wrong wire:', old_wire_key)
if len(all_edges) > 0:
for edge in old_wire_key:
if edge in all_edges:
common_edges[edge] = old_edges[edge]
all_edges.extend(old_wire_key)
all_edges = list(set(all_edges))
print('<<<< Common edges:', common_edges)
return bordering_wires, common_edges
def write_face(self, points_face, list_points_edge, topo_face, toledge):
"""
Method to recreate a Face associated to a geometric surface
after the modification of Face points. It returns a TopoDS_Face.
:param points_face: the new face points array.
:param list_points_edge: new edge points
:param topo_face: the face to be modified
:param toledge: tolerance on the surface creation after modification
:return: TopoDS_Face (Shape)
:rtype: TopoDS_Shape
"""
# convert Face to Geom B-spline Surface
nurbs_converter = BRepBuilderAPI_NurbsConvert(topo_face)
nurbs_converter.Perform(topo_face)
nurbs_face = nurbs_converter.Shape()
topo_nurbsface = topods.Face(nurbs_face)
h_geomsurface = BRep_Tool.Surface(topo_nurbsface)
h_bsurface = geomconvert_SurfaceToBSplineSurface(h_geomsurface)
bsurface = h_bsurface.GetObject()
nb_u = bsurface.NbUPoles()
nb_v = bsurface.NbVPoles()
# check consistency
if points_face.shape[0] != nb_u * nb_v:
raise ValueError("Input control points do not have not have the "
"same number as the geometric face!")
# cycle on the face points
indice_cpt = 0
for iu in range(1, nb_u + 1):
for iv in range(1, nb_v + 1):
cpt = points_face[indice_cpt]
bsurface.SetPole(iu, iv, gp_Pnt(cpt[0], cpt[1], cpt[2]))
indice_cpt += 1
# create modified new face
new_bspline_tface = BRepBuilderAPI_MakeFace()
toler = precision_Confusion()
new_bspline_tface.Init(bsurface.GetHandle(), False, toler)
# cycle on the wires
face_wires_explorer = TopExp_Explorer(
topo_nurbsface.Oriented(TopAbs_FORWARD), TopAbs_WIRE)
ind_edge_total = 0
while face_wires_explorer.More():
# get old wire
twire = topods_Wire(face_wires_explorer.Current())
# cycle on the edges
ind_edge = 0
wire_explorer_edge = TopExp_Explorer(
twire.Oriented(TopAbs_FORWARD), TopAbs_EDGE)
# check edges order on the wire
mode3d = True
tolerance_edges = toledge
wire_order = ShapeAnalysis_WireOrder(mode3d, tolerance_edges)
# an edge list
deformed_edges = []
# cycle on the edges
while wire_explorer_edge.More():
tedge = topods_Edge(wire_explorer_edge.Current())
new_bspline_tedge = self.write_edge(
list_points_edge[ind_edge_total], tedge)
deformed_edges.append(new_bspline_tedge)
analyzer = topexp()
vfirst = analyzer.FirstVertex(new_bspline_tedge)
vlast = analyzer.LastVertex(new_bspline_tedge)
pt1 = BRep_Tool.Pnt(vfirst)
pt2 = BRep_Tool.Pnt(vlast)
wire_order.Add(pt1.XYZ(), pt2.XYZ())
ind_edge += 1
ind_edge_total += 1
wire_explorer_edge.Next()
# grouping the edges in a wire, then in the face
# check edges order and connectivity within the wire
wire_order.Perform()
# new wire to be created
stol = ShapeFix_ShapeTolerance()
new_bspline_twire = BRepBuilderAPI_MakeWire()
for order_i in range(1, wire_order.NbEdges() + 1):
deformed_edge_i = wire_order.Ordered(order_i)
if deformed_edge_i > 0:
# insert the deformed edge to the new wire
new_edge_toadd = deformed_edges[deformed_edge_i - 1]
stol.SetTolerance(new_edge_toadd, toledge)
new_bspline_twire.Add(new_edge_toadd)
if new_bspline_twire.Error() != 0:
stol.SetTolerance(new_edge_toadd, toledge * 10.0)
new_bspline_twire.Add(new_edge_toadd)
else:
deformed_edge_revers = deformed_edges[
np.abs(deformed_edge_i) - 1]
stol.SetTolerance(deformed_edge_revers, toledge)
new_bspline_twire.Add(deformed_edge_revers)
if new_bspline_twire.Error() != 0:
stol.SetTolerance(deformed_edge_revers, toledge * 10.0)
new_bspline_twire.Add(deformed_edge_revers)
# add new wire to the Face
new_bspline_tface.Add(new_bspline_twire.Wire())
face_wires_explorer.Next()
return topods.Face(new_bspline_tface.Face())
def parse_face(topo_face):
"""
Method to parse a single `Face` (a single patch nurbs surface).
It returns a matrix with all the coordinates of control points of the
`Face` and a second list with all the control points related to the
`Edges` of the `Face.`
:param Face topo_face: the input Face.
:return: control points of the `Face`, control points related to
`Edges`.
:rtype: tuple(numpy.ndarray, list)
"""
# get some Face - Edge - Vertex data map information
mesh_points_edge = []
face_exp_wire = TopExp_Explorer(topo_face, TopAbs_WIRE)
# loop on wires per face
while face_exp_wire.More():
twire = topods_Wire(face_exp_wire.Current())
wire_exp_edge = TopExp_Explorer(twire, TopAbs_EDGE)
# loop on edges per wire
while wire_exp_edge.More():
edge = topods_Edge(wire_exp_edge.Current())
bspline_converter = BRepBuilderAPI_NurbsConvert(edge)
bspline_converter.Perform(edge)
bspline_tshape_edge = bspline_converter.Shape()
h_geom_edge = BRep_Tool_Curve(
topods_Edge(bspline_tshape_edge))[0]
h_bspline_edge = geomconvert_CurveToBSplineCurve(h_geom_edge)
bspline_geom_edge = h_bspline_edge.GetObject()
nb_poles = bspline_geom_edge.NbPoles()
# Edge geometric properties
edge_ctrlpts = TColgp_Array1OfPnt(1, nb_poles)
bspline_geom_edge.Poles(edge_ctrlpts)
points_single_edge = np.zeros((0, 3))
for i in range(1, nb_poles + 1):
ctrlpt = edge_ctrlpts.Value(i)
ctrlpt_position = np.array(
[[ctrlpt.Coord(1),
ctrlpt.Coord(2),
ctrlpt.Coord(3)]])
points_single_edge = np.append(
points_single_edge, ctrlpt_position, axis=0)
mesh_points_edge.append(points_single_edge)
wire_exp_edge.Next()
face_exp_wire.Next()
# extract mesh points (control points) on Face
mesh_points_face = np.zeros((0, 3))
# convert Face to Geom B-spline Face
nurbs_converter = BRepBuilderAPI_NurbsConvert(topo_face)
nurbs_converter.Perform(topo_face)
nurbs_face = nurbs_converter.Shape()
h_geomsurface = BRep_Tool.Surface(topods.Face(nurbs_face))
h_bsurface = geomconvert_SurfaceToBSplineSurface(h_geomsurface)
bsurface = h_bsurface.GetObject()
# get access to control points (poles)
nb_u = bsurface.NbUPoles()
nb_v = bsurface.NbVPoles()
ctrlpts = TColgp_Array2OfPnt(1, nb_u, 1, nb_v)
bsurface.Poles(ctrlpts)
for indice_u_direction in range(1, nb_u + 1):
for indice_v_direction in range(1, nb_v + 1):
ctrlpt = ctrlpts.Value(indice_u_direction, indice_v_direction)
ctrlpt_position = np.array(
[[ctrlpt.Coord(1),
ctrlpt.Coord(2),
ctrlpt.Coord(3)]])
mesh_points_face = np.append(
mesh_points_face, ctrlpt_position, axis=0)
return mesh_points_face, mesh_points_edge
def write_face(self, points_face, list_points_edge, topo_face, toledge):
"""
Method to recreate a Face associated to a geometric surface
after the modification of Face points. It returns a TopoDS_Face.
:param points_face: the new face points array.
:param list_points_edge: new edge points
:param topo_face: the face to be modified
:param toledge: tolerance on the surface creation after modification
:return: TopoDS_Face (Shape)
:rtype: TopoDS_Shape
"""
# convert Face to Geom B-spline Surface
nurbs_converter = BRepBuilderAPI_NurbsConvert(topo_face)
nurbs_converter.Perform(topo_face)
nurbs_face = nurbs_converter.Shape()
topo_nurbsface = topods.Face(nurbs_face)
h_geomsurface = BRep_Tool.Surface(topo_nurbsface)
h_bsurface = geomconvert_SurfaceToBSplineSurface(h_geomsurface)
bsurface = h_bsurface.GetObject()
nb_u = bsurface.NbUPoles()
nb_v = bsurface.NbVPoles()
# check consistency
if points_face.shape[0] != nb_u * nb_v:
raise ValueError("Input control points do not have not have the "
"same number as the geometric face!")
# cycle on the face points
indice_cpt = 0
for iu in range(1, nb_u + 1):
for iv in range(1, nb_v + 1):
cpt = points_face[indice_cpt]
bsurface.SetPole(iu, iv, gp_Pnt(cpt[0], cpt[1], cpt[2]))
indice_cpt += 1
# create modified new face
new_bspline_tface = BRepBuilderAPI_MakeFace()
toler = precision_Confusion()
new_bspline_tface.Init(bsurface.GetHandle(), False, toler)
# cycle on the wires
face_wires_explorer = TopExp_Explorer(
topo_nurbsface.Oriented(TopAbs_FORWARD), TopAbs_WIRE)
ind_edge_total = 0
while face_wires_explorer.More():
# get old wire
twire = topods_Wire(face_wires_explorer.Current())
# cycle on the edges
ind_edge = 0
wire_explorer_edge = TopExp_Explorer(
twire.Oriented(TopAbs_FORWARD), TopAbs_EDGE)
# check edges order on the wire
mode3d = True
tolerance_edges = toledge
wire_order = ShapeAnalysis_WireOrder(mode3d, tolerance_edges)
# an edge list
deformed_edges = []
# cycle on the edges
while wire_explorer_edge.More():
tedge = topods_Edge(wire_explorer_edge.Current())
new_bspline_tedge = self.write_edge(
list_points_edge[ind_edge_total], tedge)
deformed_edges.append(new_bspline_tedge)
analyzer = topexp()
vfirst = analyzer.FirstVertex(new_bspline_tedge)
vlast = analyzer.LastVertex(new_bspline_tedge)
pt1 = BRep_Tool.Pnt(vfirst)
pt2 = BRep_Tool.Pnt(vlast)
wire_order.Add(pt1.XYZ(), pt2.XYZ())
ind_edge += 1
ind_edge_total += 1
wire_explorer_edge.Next()
# grouping the edges in a wire, then in the face
# check edges order and connectivity within the wire
wire_order.Perform()
# new wire to be created
stol = ShapeFix_ShapeTolerance()
new_bspline_twire = BRepBuilderAPI_MakeWire()
for order_i in range(1, wire_order.NbEdges() + 1):
deformed_edge_i = wire_order.Ordered(order_i)
if deformed_edge_i > 0:
# insert the deformed edge to the new wire
new_edge_toadd = deformed_edges[deformed_edge_i - 1]
stol.SetTolerance(new_edge_toadd, toledge)
new_bspline_twire.Add(new_edge_toadd)
if new_bspline_twire.Error() != 0:
stol.SetTolerance(new_edge_toadd, toledge * 10.0)
new_bspline_twire.Add(new_edge_toadd)
else:
deformed_edge_revers = deformed_edges[
np.abs(deformed_edge_i) - 1]
stol.SetTolerance(deformed_edge_revers, toledge)
new_bspline_twire.Add(deformed_edge_revers)
if new_bspline_twire.Error() != 0:
stol.SetTolerance(deformed_edge_revers, toledge * 10.0)
new_bspline_twire.Add(deformed_edge_revers)
# add new wire to the Face
new_bspline_tface.Add(new_bspline_twire.Wire())
face_wires_explorer.Next()
return topods.Face(new_bspline_tface.Face())
def parse_face(topo_face):
"""
Method to parse a single Face (a single patch nurbs surface).
It returns a matrix with all the coordinates of control points of the
Face and a second list with all the control points related to the
Edges of the Face.
:param topo_face: the input Face
:return: mesh_points_face: it is a `n_points`-by-3 matrix containing the
coordinates of the control points of the Face (a nurbs surface)
:return: mesh_points_edge: it is a list of `n_points`-by-3 matrix
:rtype: tuple(numpy.ndarray, list)
"""
# get some Face - Edge - Vertex data map information
mesh_points_edge = []
face_exp_wire = TopExp_Explorer(topo_face, TopAbs_WIRE)
# loop on wires per face
while face_exp_wire.More():
twire = topods_Wire(face_exp_wire.Current())
wire_exp_edge = TopExp_Explorer(twire, TopAbs_EDGE)
# loop on edges per wire
while wire_exp_edge.More():
edge = topods_Edge(wire_exp_edge.Current())
bspline_converter = BRepBuilderAPI_NurbsConvert(edge)
bspline_converter.Perform(edge)
bspline_tshape_edge = bspline_converter.Shape()
h_geom_edge = BRep_Tool_Curve(
topods_Edge(bspline_tshape_edge))[0]
h_bspline_edge = geomconvert_CurveToBSplineCurve(h_geom_edge)
bspline_geom_edge = h_bspline_edge.GetObject()
nb_poles = bspline_geom_edge.NbPoles()
# Edge geometric properties
edge_ctrlpts = TColgp_Array1OfPnt(1, nb_poles)
bspline_geom_edge.Poles(edge_ctrlpts)
points_single_edge = np.zeros((0, 3))
for i in range(1, nb_poles + 1):
ctrlpt = edge_ctrlpts.Value(i)
ctrlpt_position = np.array(
[[ctrlpt.Coord(1),
ctrlpt.Coord(2),
ctrlpt.Coord(3)]])
points_single_edge = np.append(points_single_edge,
ctrlpt_position,
axis=0)
mesh_points_edge.append(points_single_edge)
wire_exp_edge.Next()
face_exp_wire.Next()
# extract mesh points (control points) on Face
mesh_points_face = np.zeros((0, 3))
# convert Face to Geom B-spline Face
nurbs_converter = BRepBuilderAPI_NurbsConvert(topo_face)
nurbs_converter.Perform(topo_face)
nurbs_face = nurbs_converter.Shape()
h_geomsurface = BRep_Tool.Surface(topods.Face(nurbs_face))
h_bsurface = geomconvert_SurfaceToBSplineSurface(h_geomsurface)
bsurface = h_bsurface.GetObject()
# get access to control points (poles)
nb_u = bsurface.NbUPoles()
nb_v = bsurface.NbVPoles()
ctrlpts = TColgp_Array2OfPnt(1, nb_u, 1, nb_v)
bsurface.Poles(ctrlpts)
for indice_u_direction in range(1, nb_u + 1):
for indice_v_direction in range(1, nb_v + 1):
ctrlpt = ctrlpts.Value(indice_u_direction, indice_v_direction)
ctrlpt_position = np.array(
[[ctrlpt.Coord(1),
ctrlpt.Coord(2),
ctrlpt.Coord(3)]])
mesh_points_face = np.append(mesh_points_face,
ctrlpt_position,
axis=0)
return mesh_points_face, mesh_points_edge