def write(self, mesh_points, filename, tolerance=None):
"""
Writes a output file, called filename, copying all the structures from self.filename but
the coordinates. mesh_points is a matrix that contains the new coordinates to
write in the output file.
:param numpy.ndarray mesh_points: it is a `n_points`-by-3 matrix containing
the coordinates of the points of the mesh
:param string filename: name of the output file.
:param float tolerance: tolerance for the construction of the faces and wires
in the write function. If not given it uses `self.tolerance`.
"""
self._check_filename_type(filename)
self._check_extension(filename)
self._check_infile_instantiation()
self.outfile = filename
if tolerance is not None:
self.tolerance = tolerance
# cycle on the faces to update the control points position
# init some quantities
faces_explorer = TopExp_Explorer(self.shape, TopAbs_FACE)
n_faces = 0
control_point_position = self._control_point_position
compound_builder = BRep_Builder()
compound = OCC.TopoDS.TopoDS_Compound()
compound_builder.MakeCompound(compound)
while faces_explorer.More():
# similar to the parser method
face = OCC.TopoDS.topods_Face(faces_explorer.Current())
nurbs_converter = BRepBuilderAPI_NurbsConvert(face)
nurbs_converter.Perform(face)
nurbs_face = nurbs_converter.Shape()
face_aux = OCC.TopoDS.topods_Face(nurbs_face)
brep_face = BRep_Tool.Surface(OCC.TopoDS.topods_Face(nurbs_face))
bspline_face = geomconvert_SurfaceToBSplineSurface(brep_face)
occ_face = bspline_face.GetObject()
n_poles_u = occ_face.NbUPoles()
n_poles_v = occ_face.NbVPoles()
i = 0
for pole_u_direction in range(n_poles_u):
for pole_v_direction in range(n_poles_v):
control_point_coordinates = mesh_points[
i + control_point_position[n_faces], :]
point_xyz = gp_XYZ(*control_point_coordinates)
gp_point = gp_Pnt(point_xyz)
occ_face.SetPole(pole_u_direction + 1,
pole_v_direction + 1, gp_point)
i += 1
# construct the deformed wire for the trimmed surfaces
wire_maker = BRepBuilderAPI_MakeWire()
tol = ShapeFix_ShapeTolerance()
brep = BRepBuilderAPI_MakeFace(occ_face.GetHandle(),
self.tolerance).Face()
brep_face = BRep_Tool.Surface(brep)
# cycle on the edges
edge_explorer = TopExp_Explorer(nurbs_face, TopAbs_EDGE)
while edge_explorer.More():
edge = OCC.TopoDS.topods_Edge(edge_explorer.Current())
# edge in the (u,v) coordinates
edge_uv_coordinates = BRep_Tool.CurveOnSurface(edge, face_aux)
# evaluating the new edge: same (u,v) coordinates, but different (x,y,x) ones
edge_phis_coordinates_aux = BRepBuilderAPI_MakeEdge(\
edge_uv_coordinates[0], brep_face)
edge_phis_coordinates = edge_phis_coordinates_aux.Edge()
tol.SetTolerance(edge_phis_coordinates, self.tolerance)
wire_maker.Add(edge_phis_coordinates)
edge_explorer.Next()
# grouping the edges in a wire
wire = wire_maker.Wire()
# trimming the surfaces
brep_surf = BRepBuilderAPI_MakeFace(occ_face.GetHandle(),
wire).Shape()
compound_builder.Add(compound, brep_surf)
n_faces += 1
faces_explorer.Next()
self.write_shape_to_file(compound, self.outfile)
def EdgeOnSurface(edge, section_plane, lim_coord1, lim_coord2, XYZ):
section_face = BRepBuilderAPI_MakeFace(section_plane, lim_coord1[0],
lim_coord1[1], lim_coord2[0],
lim_coord2[1]).Face()
curve_handle, first, last = BRep_Tool.CurveOnSurface(edge, section_face)
plane = Geom_Plane(section_plane)
edge_on_surface = BRepBuilderAPI_MakeEdge(curve_handle, plane.GetHandle(),
first, last).Edge()
curve_adaptor = BRepAdaptor_Curve(edge_on_surface)
if curve_adaptor.GetType() == GeomAbs_Line:
v = list(Topo(edge_on_surface).vertices())
v1 = BRep_Tool.Pnt(v[0]).X(), BRep_Tool.Pnt(v[0]).Y(), BRep_Tool.Pnt(
v[0]).Z()
v2 = BRep_Tool.Pnt(v[-1]).X(), BRep_Tool.Pnt(v[-1]).Y(), BRep_Tool.Pnt(
v[-1]).Z()
obj = Line3D(v1, v2)
elif curve_adaptor.GetType() == GeomAbs_Circle:
v = list(Topo(edge_on_surface).vertices())
v1 = BRep_Tool.Pnt(v[0]).X(), BRep_Tool.Pnt(v[0]).Y(), BRep_Tool.Pnt(
v[0]).Z()
v2 = BRep_Tool.Pnt(v[-1]).X(), BRep_Tool.Pnt(v[-1]).Y(), BRep_Tool.Pnt(
v[-1]).Z()
start = [v1[i] for i in range(len(XYZ)) if XYZ[i]]
end = [v2[i] for i in range(len(XYZ)) if XYZ[i]]
circle = curve_adaptor.Circle()
center = []
for i in range(len(XYZ)):
if XYZ[i] and i == 0:
center.append(circle.Location().X())
elif XYZ[i] and i == 1:
center.append(circle.Location().Y())
elif XYZ[i] and i == 2:
center.append(circle.Location().Z())
else:
center.append(0.5 * (v1[i] + v2[i]))
radius = circle.Radius()
vec_start = (start[0] - center[0], start[1] - center[1])
vec_end = (end[0] - center[0], end[1] - center[1])
t1 = angle360(vec_start)
t2 = angle360(vec_end)
if not XYZ[0]:
axis = circle.Axis().Direction().X()
elif not XYZ[1]:
axis = circle.Axis().Direction().Y()
elif not XYZ[2]:
axis = circle.Axis().Direction().Z()
if axis < 0:
t1, t2 = t2, t1
obj = Arc3D(v1, v2, t1, t2, center, radius)
elif curve_adaptor.GetType() == GeomAbs_BSplineCurve:
bspline = curve_adaptor.BSpline().GetObject()
degree = bspline.Degree()
knots = [
bspline.Knot(index) for index in range(1,
bspline.NbKnots() + 1)
]
mults = [
bspline.Multiplicity(index)
for index in range(1,
bspline.NbKnots() + 1)
]
poles = [(bspline.Pole(index).X(), bspline.Pole(index).Y(),
bspline.Pole(index).Z())
for index in range(1,
bspline.NbPoles() + 1)]
periodic = bspline.IsPeriodic()
obj = BSpline3D(poles, mults, knots, degree, periodic)
else:
print(curve_adaptor.GetType())
warnings.warn("Not recognized curve!")
return obj
section_plane, zmin, zmax, ymin, ymax).Face()
#ifcopenshell.geom.utils.display_shape(section_face)
n_edges = 0
# Explore the faces of the shape (these are known to be named)
exp = TopExp_Explorer(shape, TopAbs_FACE)
while exp.More():
s = exp.Current()
tp = Topo(s)
for face in tp.faces():
ifcopenshell.geom.utils.display_shape(face)
for edge in list(Topo(face).edges()):
curve_handle, first, last = BRep_Tool.CurveOnSurface(
edge, section_face)
plane = Geom_Plane(section_plane)
e = BRepBuilderAPI_MakeEdge(curve_handle, plane.GetHandle(), first,
last).Edge()
# handle_adaptor = Geom2dAdaptor_Curve(curve_handle)
curve_adapt = BRepAdaptor_Curve(e)
if curve_adapt.GetType() == GeomAbs_Line:
v = list(Topo(e).vertices())
y1, z1 = BRep_Tool.Pnt(v[0]).Y(), BRep_Tool.Pnt(v[0]).Z()
y2, z2 = BRep_Tool.Pnt(v[-1]).Y(), BRep_Tool.Pnt(v[-1]).Z()
plt.plot([y1, y2], [z1, z2], color="red", alpha=0.2)
ifcopenshell.geom.utils.display_shape(e, clr=RED)
def write(cls, filename, data, tolerance=1e-6):
# cycle on the faces to update the control points position
# init some quantities
shape = data.shape
control_point_position = data.control_point_position
mesh_points = data.points
faces_explorer = TopExp_Explorer(shape, TopAbs_FACE)
n_faces = 0
compound_builder = BRep_Builder()
compound = TopoDS_Compound()
compound_builder.MakeCompound(compound)
while faces_explorer.More():
# similar to the parser method
face = topods_Face(faces_explorer.Current())
nurbs_converter = BRepBuilderAPI_NurbsConvert(face)
nurbs_converter.Perform(face)
nurbs_face = nurbs_converter.Shape()
face_aux = topods_Face(nurbs_face)
brep_face = BRep_Tool.Surface(topods_Face(nurbs_face))
bspline_face = geomconvert_SurfaceToBSplineSurface(brep_face)
occ_face = bspline_face.GetObject()
n_poles_u = occ_face.NbUPoles()
n_poles_v = occ_face.NbVPoles()
i = 0
for pole_u_direction in range(n_poles_u):
for pole_v_direction in range(n_poles_v):
control_point_coordinates = mesh_points[
+control_point_position[n_faces], :]
point_xyz = gp_XYZ(*control_point_coordinates)
gp_point = gp_Pnt(point_xyz)
occ_face.SetPole(pole_u_direction + 1,
pole_v_direction + 1, gp_point)
i += 1
# construct the deformed wire for the trimmed surfaces
wire_maker = BRepBuilderAPI_MakeWire()
tol = ShapeFix_ShapeTolerance()
brep = BRepBuilderAPI_MakeFace(occ_face.GetHandle(),
tolerance).Face()
brep_face = BRep_Tool.Surface(brep)
# cycle on the edges
edge_explorer = TopExp_Explorer(nurbs_face, TopAbs_EDGE)
while edge_explorer.More():
edge = topods_Edge(edge_explorer.Current())
# edge in the (u,v) coordinates
edge_uv_coordinates = BRep_Tool.CurveOnSurface(edge, face_aux)
# evaluating the new edge: same (u,v) coordinates, but
# different (x,y,x) ones
edge_phis_coordinates_aux = BRepBuilderAPI_MakeEdge(
edge_uv_coordinates[0], brep_face)
edge_phis_coordinates = edge_phis_coordinates_aux.Edge()
tol.SetTolerance(edge_phis_coordinates, tolerance)
wire_maker.Add(edge_phis_coordinates)
edge_explorer.Next()
# grouping the edges in a wire
wire = wire_maker.Wire()
# trimming the surfaces
brep_surf = BRepBuilderAPI_MakeFace(occ_face.GetHandle(),
wire).Shape()
compound_builder.Add(compound, brep_surf)
n_faces += 1
faces_explorer.Next()
IGESControl_Controller_Init()
writer = IGESControl_Writer()
writer.AddShape(compound)
writer.Write(filename)