def __init__(self, wire, face=None):
if face is None:
explorer = BRepTools_WireExplorer(wire)
else:
explorer = BRepTools_WireExplorer(wire, face)
edges = []
current_verts = []
while explorer.More():
ei = TopoDS.Edge_(explorer.Current())
vi = TopoDS.Vertex_(explorer.CurrentVertex())
edges.append(ei)
current_verts.append(vi)
explorer.Next()
# CurrentVertex doesn't get the last vertex. Try to get it.
ordered_verts = list(current_verts)
if edges:
data = ShapeExtend_WireData(wire)
fix = ShapeFix_WireSegment(data)
v1 = fix.LastVertex()
ordered_verts.append(v1)
self._edges = edges
self._current_verts = current_verts
self._ordered_verts = ordered_verts
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.SHELL:
raise TypeError('Shape is not a TopoDS_Shell.')
if not isinstance(shape, TopoDS_Shell):
shape = TopoDS.Shell_(shape)
super(Shell, self).__init__(shape)
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.FACE:
raise TypeError('Shape is not a TopoDS_Face.')
if not isinstance(shape, TopoDS_Face):
shape = TopoDS.Face_(shape)
super(Face, self).__init__(shape)
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.COMPOUND:
raise TypeError('Shape is not a TopoDS_Compound.')
if not isinstance(shape, TopoDS_Compound):
shape = TopoDS.Compound_(shape)
super(Compound, self).__init__(shape)
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.EDGE:
raise TypeError('Shape is not a TopoDS_Edge.')
if not isinstance(shape, TopoDS_Edge):
shape = TopoDS.Edge_(shape)
super(Edge, self).__init__(shape)
def get_vertices(shape, unique=True):
"""
Get vertices from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:param bool unique: Option to return only unique vertices.
:return: Vertices of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Vertex]
"""
if isinstance(shape, TopoDS_Vertex):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_VERTEX)
vertices = []
while exp.More():
vi = exp.Current()
vertex = TopoDS.Vertex_(vi)
if unique:
is_unique = True
for v in vertices:
if v.IsSame(vertex):
is_unique = False
break
if is_unique:
vertices.append(vertex)
else:
vertices.append(vertex)
exp.Next()
return vertices
def to_shell(cls, entity):
"""
Convert an entity to a shell.
:param entity: The entity.
:return: A shell.
:rtype: OCCT.TopoDS.TopoDS_Shell
:raise TypeError: If entity cannot be converted to a shell.
"""
if isinstance(entity, TopoDS_Shell):
return entity
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_SHELL:
return TopoDS.Shell_(entity)
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_FACE:
shell = TopoDS_Shell()
builder = BRep_Builder()
builder.MakeShell(shell)
builder.Add(shell, entity)
return shell
raise TypeError('Failed to convert entity to a shell.')
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.WIRE:
raise TypeError('Shape is not a TopoDS_Wire.')
if not isinstance(shape, TopoDS_Wire):
shape = TopoDS.Wire_(shape)
super(Wire, self).__init__(shape)
def get_edges(shape, unique=True):
"""
Get edges from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:param bool unique: Option to return only unique edges.
:return: Edges of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Edge]
"""
if isinstance(shape, TopoDS_Edge):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_EDGE)
edges = []
while exp.More():
ei = exp.Current()
edge = TopoDS.Edge_(ei)
if unique:
is_unique = True
for e in edges:
if e.IsSame(edge):
is_unique = False
break
if is_unique:
edges.append(edge)
else:
edges.append(edge)
exp.Next()
return edges
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.SOLID:
raise TypeError('Shape is not a TopoDS_Solid.')
if not isinstance(shape, TopoDS_Solid):
shape = TopoDS.Solid_(shape)
super(Solid, self).__init__(shape)
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.VERTEX:
raise TypeError('Shape is not a TopoDS_Vertex.')
if not isinstance(shape, TopoDS_Vertex):
shape = TopoDS.Vertex_(shape)
super(Vertex, self).__init__(shape)
def to_compound(cls, entity):
"""
Convert an entity to a compound.
:param entity: The entity.
:return: A compound
:rtype: OCCT.TopoDS.TopoDS_Compound
:raise TypeError: If entity cannot be converted to a compound.
"""
if isinstance(entity, TopoDS_Compound):
return entity
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_COMPOUND:
return TopoDS.Compound_(entity)
if cls.is_shape(entity):
cp = TopoDS_Compound
builder = BRep_Builder()
builder.MakeCompound(cp)
builder.Add(cp, entity)
return cp
raise TypeError('Failed to convert entity to a compound.')
def curve_of_wire(wire):
"""
Get the curve of the wire. The edges are concatenated so the
resulting curve may be C0 continuous.
:param OCCT.TopoDS.TopoDS_Wire wire: The wire.
:return: Concatenated curve of wire.
:rtype: OCCT.Geom.Geom_BSplineCurve
:raise RuntimeError: If an unsupported curve type is found.
"""
geom_convert = GeomConvert_CompCurveToBSplineCurve()
exp = BRepTools_WireExplorer(wire)
tol = ExploreShape.global_tolerance(wire, 1)
while exp.More():
e = TopoDS.Edge_(exp.Current())
exp.Next()
adp_crv = BRepAdaptor_Curve(e)
geom_convert.Add(adp_crv.BSpline(), tol)
crv = geom_convert.BSplineCurve()
if not isinstance(crv, Geom_BSplineCurve):
msg = 'Unsupported curve type.'
raise RuntimeError(msg)
return crv
def shape_to_face(self, shape):
if isinstance(shape, OccShape):
shape = shape.shape
shape = Topology.cast_shape(shape)
if isinstance(shape, (TopoDS_Face, TopoDS_Wire)):
return shape
if isinstance(shape, TopoDS_Edge):
return BRepBuilderAPI_MakeWire(shape).Wire()
return TopoDS.Wire_(shape)
def is_line(cls, shape):
""" Check if an edge or wire is a line.
This can be used to see if an edge can be used for length dimensions.
Returns
-------
bool: Bool
Whether the shape is a part of a line
"""
edge = TopoDS.Edge_(shape)
curve = BRepAdaptor_Curve(edge)
return curve.GetType() == GeomAbs.GeomAbs_Line
def curve(self):
"""
:return: The curve formed by concatenating all the underlying curves
of the edges.
:rtype: afem.geometry.entities.NurbsCurve
"""
geom_convert = GeomConvert_CompCurveToBSplineCurve()
exp = BRepTools_WireExplorer(self.object)
tol = self.tol_max
while exp.More():
e = TopoDS.Edge_(exp.Current())
exp.Next()
adp_crv = BRepAdaptor_Curve(e)
geom_convert.Add(adp_crv.BSpline(), tol)
geom_curve = geom_convert.BSplineCurve()
return Curve.wrap(geom_curve)
def to_compsolid(cls, entity):
"""
Convert an entity to a compsolid.
:param entity: The entity.
:return: A compsolid.
:rtype: OCCT.TopoDS.TopoDS_CompSolid
:raise TypeError: If entity cannot be converted to a compsolid.
"""
if isinstance(entity, TopoDS_CompSolid):
return entity
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_COMPSOLID:
return TopoDS.CompSolid_(entity)
raise TypeError('Failed to convert entity to a compsolid.')
def to_face(cls, entity):
"""
Convert an entity to a face.
:param entity: The entity.
:return: A face.
:rtype: OCCT.TopoDS.TopoDS_Face
:raise TypeError: If entity cannot be converted to a face.
"""
if isinstance(entity, TopoDS_Face):
return entity
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_FACE:
return TopoDS.Face_(entity)
raise TypeError('Failed to convert entity to a face.')
def cast_curve(cls, shape, expected_type=None):
""" Attempt to cast the shape (an edge or wire) to a curve
Parameters
----------
shape: TopoDS_Edge
The shape to cast
expected_type: GeomAbs_CurveType
The type to restrict
Returns
-------
curve: Curve or None
The curve or None if it could not be created or if it was not
of the expected type (if given).
"""
edge = TopoDS.Edge_(shape)
curve = BRepAdaptor_Curve(edge)
return cls.curve_factory[curve.GetType()](curve)
def get_shells(shape):
"""
Get shells from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:return: Shells of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Shell]
"""
if isinstance(shape, TopoDS_Shell):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_SHELL)
shells = []
while exp.More():
si = exp.Current()
shell = TopoDS.Shell_(si)
shells.append(shell)
exp.Next()
return shells
def to_shape(cls, entity):
"""
Convert the entity to a shape. This method tries to convert the
entity to its most specific shape type.
:param entity: The entity.
:return: A shape.
:rtype: OCCT.TopoDS.TopoDS_Shape
:raise TypeError: If entity cannot be converted to a shape.
"""
if entity is None:
return None
# Shapes
if isinstance(entity, TopoDS_Shape):
if entity.IsNull():
raise TypeError('Cannot convert null shape.')
elif entity.ShapeType() == TopAbs_VERTEX:
return TopoDS.Vertex_(entity)
elif entity.ShapeType() == TopAbs_EDGE:
return TopoDS.Edge_(entity)
elif entity.ShapeType() == TopAbs_WIRE:
return TopoDS.Wire_(entity)
elif entity.ShapeType() == TopAbs_FACE:
return TopoDS.Face_(entity)
elif entity.ShapeType() == TopAbs_SHELL:
return TopoDS.Shell_(entity)
elif entity.ShapeType() == TopAbs_SOLID:
return TopoDS.Solid_(entity)
elif entity.ShapeType() == TopAbs_COMPSOLID:
return TopoDS.CompSolid_(entity)
elif entity.ShapeType() == TopAbs_COMPOUND:
return TopoDS.Compound_(entity)
else:
raise TypeError('Failed to convert entity to a shape.')
raise TypeError('Failed to convert entity to a shape.')
def get_faces(shape):
"""
Get faces from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:return: Faces of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Face]
"""
if isinstance(shape, TopoDS_Face):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_FACE)
faces = []
while exp.More():
fi = exp.Current()
face = TopoDS.Face_(fi)
faces.append(face)
exp.Next()
return faces
def get_compounds(shape):
"""
Get compounds from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:return: Compounds of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Compound]
"""
if isinstance(shape, TopoDS_Compound):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_COMPOUND)
compounds = []
while exp.More():
ci = exp.Current()
compound = TopoDS.Compound_(ci)
compounds.append(compound)
exp.Next()
return compounds
def get_wires(shape):
"""
Get wires from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:return: Wires of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Wire]
"""
if isinstance(shape, TopoDS_Wire):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_WIRE)
wires = []
while exp.More():
wi = exp.Current()
wire = TopoDS.Wire_(wi)
wires.append(wire)
exp.Next()
return wires
def get_solids(shape):
"""
Get solids from a shape.
:param OCCT.TopoDS.TopoDS_Shape shape: The shape.
:return: Solids of shape.
:rtype: list[OCCT.TopoDS.TopoDS_Solid]
"""
if isinstance(shape, TopoDS_Solid):
return [shape]
exp = TopExp_Explorer(shape, TopAbs_SOLID)
solids = []
while exp.More():
si = exp.Current()
solid = TopoDS.Solid_(si)
solids.append(solid)
exp.Next()
return solids
def __init__(self,
shapes,
intersect=False,
fuzzy_val=None,
nondestructive=False):
super(VolumeMaker, self).__init__(None, None, fuzzy_val,
nondestructive, BOPAlgo_MakerVolume)
self.set_args(shapes)
if intersect:
self._bop.SetIntersect(True)
else:
self._bop.SetIntersect(False)
self.build()
self._solids = []
for solid in ExploreShape.get_solids(self.shape):
self._solids.append(TopoDS.Solid_(solid))
def to_wire(cls, entity):
"""
Convert an entity to a wire.
:param entity: The entity.
:return: A wire.
:rtype: OCCT.TopoDS.TopoDS_Wire
:raise TypeError: If entity cannot be converted to a wire.
"""
if isinstance(entity, TopoDS_Wire):
return entity
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_EDGE:
return BRepBuilderAPI_MakeWire(entity).Wire()
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_WIRE:
return TopoDS.Wire_(entity)
raise TypeError('Failed to convert entity to a wire.')
def to_vertex(cls, entity):
"""
Convert an entity to a vertex.
:param entity: The entity.
:return: A vertex.
:rtype: OCCT.TopoDS.TopoDS_Vertex
:raise TypeError: If entity cannot be converted to a vertex.
"""
if isinstance(entity, TopoDS_Vertex):
return entity
if isinstance(entity, gp_Pnt):
return BRepBuilderAPI_MakeVertex(entity).Vertex()
if cls.is_shape(entity) and entity.ShapeType() == TopAbs_VERTEX:
return TopoDS.Vertex_(entity)
raise TypeError('Failed to convert entity to a vertex.')
def cast_surface(cls, shape, expected_type=None):
""" Attempt to cast the shape (a face) to a surface
Parameters
----------
shape: TopoDS_Face
The shape to cast
expected_type: GeomAbs_SurfaceType
The type to restrict
Returns
-------
surface: BRepAdaptor_Surface or None
The surface or None if it could not be created or did not
match the expected type (if given).
"""
if isinstance(shape, TopoDS_Face):
face = shape
else:
face = TopoDS.Face_(shape)
surface = BRepAdaptor_Surface(face, True)
if expected_type is not None and surface.GetType() != expected_type:
return None
return surface
def create_shape(self):
d = self.declaration
t = self.get_transform()
w, h = d.width, d.height
if d.rx or d.ry:
rx, ry = d.rx, d.ry
if not ry:
ry = rx
elif not rx:
rx = ry
# Clamp to the valid range
rx = min(w / 2, rx)
ry = min(h / 2, ry)
# Bottom
p1 = gp_Pnt(0 + rx, 0, 0)
p2 = gp_Pnt(0 + w - rx, 0, 0)
# Right
p3 = gp_Pnt(w, ry, 0)
p4 = gp_Pnt(w, h - ry, 0)
# Top
p5 = gp_Pnt(w - rx, h, 0)
p6 = gp_Pnt(rx, h, 0)
# Left
p7 = gp_Pnt(0, h - ry, 0)
p8 = gp_Pnt(0, ry, 0)
shape = BRepBuilderAPI_MakeWire()
e = d.tolerance
# Bottom
if not p1.IsEqual(p2, e):
shape.Add(BRepBuilderAPI_MakeEdge(p1, p2).Edge())
# Arc bottom right
c = make_ellipse((w - rx, ry, 0), rx, ry)
shape.Add(
BRepBuilderAPI_MakeEdge(
GC_MakeArcOfEllipse(c, p2, p3, False).Value()).Edge())
# Right
if not p3.IsEqual(p4, e):
shape.Add(BRepBuilderAPI_MakeEdge(p3, p4).Edge())
# Arc top right
c.SetLocation(gp_Pnt(w - rx, h - ry, 0))
shape.Add(
BRepBuilderAPI_MakeEdge(
GC_MakeArcOfEllipse(c, p4, p5, False).Value()).Edge())
# Top
if not p5.IsEqual(p6, e):
shape.Add(BRepBuilderAPI_MakeEdge(p5, p6).Edge())
# Arc top left
c.SetLocation(gp_Pnt(rx, h - ry, 0))
shape.Add(
BRepBuilderAPI_MakeEdge(
GC_MakeArcOfEllipse(c, p6, p7, False).Value()).Edge())
# Left
if not p7.IsEqual(p8, e):
shape.Add(BRepBuilderAPI_MakeEdge(p7, p8).Edge())
# Arc bottom left
c.SetLocation(gp_Pnt(rx, ry, 0))
shape.Add(
BRepBuilderAPI_MakeEdge(
GC_MakeArcOfEllipse(c, p8, p1, False).Value()).Edge())
shape = shape.Wire()
shape.Closed(True)
else:
shape = BRepBuilderAPI_MakePolygon(gp_Pnt(0, 0,
0), gp_Pnt(w, 0, 0),
gp_Pnt(w, h, 0),
gp_Pnt(0, h, 0), True).Wire()
wire = TopoDS.Wire_(BRepBuilderAPI_Transform(shape, t, False).Shape())
self.curve = BRepAdaptor_CompCurve(wire)
self.shape = wire
