Work towards v1.0 data model with encapsulated weak_ptr as basis for instances

This commit is contained in:
Thomas Krijnen
2026-01-04 10:40:02 +01:00
parent f09ca658f1
commit 7098beb819
210 changed files with 28269 additions and 26471 deletions
+96 -120
View File
@@ -104,18 +104,18 @@ std::pair<char const*, size_t> vector_to_buffer(const T& t) {
%ignore ifcopenshell::geometry::taxonomy::item::print;
%typemap(out) boost::variant<boost::blank, ifcopenshell::geometry::taxonomy::point3::ptr, double> {
if ($1.which() == 0) {
%typemap(out) std::variant<boost::blank, ifcopenshell::geometry::taxonomy::point3::ptr, double> {
if ($1.index() == 0) {
Py_INCREF(Py_None);
return Py_None;
} else if ($1.which() == 1) {
return SWIG_NewPointerObj(SWIG_as_voidptr(new std::shared_ptr<ifcopenshell::geometry::taxonomy::point3>(boost::get<ifcopenshell::geometry::taxonomy::point3::ptr>($1))), SWIGTYPE_p_std__shared_ptrT_ifcopenshell__geometry__taxonomy__point3_t, 0 | SWIG_POINTER_OWN);
} else if ($1.index() == 1) {
return SWIG_NewPointerObj(SWIG_as_voidptr(new std::shared_ptr<ifcopenshell::geometry::taxonomy::point3>(std::get<ifcopenshell::geometry::taxonomy::point3::ptr>($1))), SWIGTYPE_p_std__shared_ptrT_ifcopenshell__geometry__taxonomy__point3_t, 0 | SWIG_POINTER_OWN);
} else {
return PyFloat_FromDouble(boost::get<double>($1));
return PyFloat_FromDouble(std::get<double>($1));
}
}
%typemap(out) boost::optional<bool> {
%typemap(out) std::optional<bool> {
if ($1) {
$result = PyBool_FromLong(*$1 ? 1 : 0);
} else {
@@ -279,14 +279,10 @@ namespace {
%extend ifcopenshell::geometry::taxonomy::style {
size_t instance_id() const {
if (self->instance == nullptr) {
if (!self->instance) {
return 0;
}
const IfcUtil::IfcBaseEntity* ent;
if ((ent = self->instance->as<IfcUtil::IfcBaseEntity>()) == nullptr) {
return 0;
}
return ent->id();
return self->instance.id();
}
}
@@ -451,63 +447,47 @@ assign_matrix_access(revolve);
%extend IfcGeom::tree {
static aggregate_of_instance::ptr vector_to_list(const std::vector<const IfcUtil::IfcBaseEntity*>& ps) {
aggregate_of_instance::ptr r(new aggregate_of_instance);
for (auto it = ps.begin(); it != ps.end(); ++it) {
// @todo
r->push(const_cast<IfcUtil::IfcBaseEntity*>(*it));
}
return r;
}
aggregate_of_instance::ptr select_box(IfcUtil::IfcBaseClass* e, bool completely_within = false, double extend=-1.e-5) const {
if (!e->declaration().is("IfcProduct")) {
std::vector<express::Base> select_box(const express::Base& e, bool completely_within = false, double extend=-1.e-5) const {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("Instance should be an IfcProduct");
}
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select_box((IfcUtil::IfcBaseEntity*)e, completely_within, extend);
return IfcGeom_tree_vector_to_list(ps);
return cast_vector<express::Base>($self->select_box(e.as<express::Entity>(), completely_within, extend));
}
aggregate_of_instance::ptr select_box(const gp_Pnt& p) const {
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select_box(p);
return IfcGeom_tree_vector_to_list(ps);
std::vector<express::Base> select_box(const gp_Pnt& p) const {
return cast_vector<express::Base>($self->select_box(p));
}
aggregate_of_instance::ptr select_box(const Bnd_Box& b, bool completely_within = false) const {
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select_box(b, completely_within);
return IfcGeom_tree_vector_to_list(ps);
std::vector<express::Base> select_box(const Bnd_Box& b, bool completely_within = false) const {
return cast_vector<express::Base>($self->select_box(b, completely_within));
}
aggregate_of_instance::ptr select(IfcUtil::IfcBaseClass* e, bool completely_within = false, double extend = 0.0) const {
if (!e->declaration().is("IfcProduct")) {
std::vector<express::Base> select(const express::Base& e, bool completely_within = false, double extend = 0.0) const {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("Instance should be an IfcProduct");
}
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select((IfcUtil::IfcBaseEntity*)e, completely_within, extend);
return IfcGeom_tree_vector_to_list(ps);
return cast_vector<express::Base>($self->select(e.as<express::Entity>(), completely_within, extend));
}
aggregate_of_instance::ptr select(const gp_Pnt& p, double extend=0.0) const {
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select(p, extend);
return IfcGeom_tree_vector_to_list(ps);
std::vector<express::Base> select(const gp_Pnt& p, double extend=0.0) const {
return cast_vector<express::Base>($self->select(p, extend));
}
aggregate_of_instance::ptr select(const std::string& shape_serialization, bool completely_within = false, double extend = -1.e-5) const {
std::vector<express::Base> select(const std::string& shape_serialization, bool completely_within = false, double extend = -1.e-5) const {
std::stringstream stream(shape_serialization);
BRepTools_ShapeSet shapes;
shapes.Read(stream);
const TopoDS_Shape& shp = shapes.Shape(shapes.NbShapes());
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select(shp, completely_within, extend);
return IfcGeom_tree_vector_to_list(ps);
return cast_vector<express::Base>($self->select(shp, completely_within, extend));
}
aggregate_of_instance::ptr select(const IfcGeom::BRepElement* elem, bool completely_within = false, double extend = -1.e-5) const {
std::vector<const IfcUtil::IfcBaseEntity*> ps = $self->select(elem, completely_within, extend);
return IfcGeom_tree_vector_to_list(ps);
std::vector<express::Base> select(const IfcGeom::BRepElement* elem, bool completely_within = false, double extend = -1.e-5) const {
return cast_vector<express::Base>($self->select(elem, completely_within, extend));
}
%typemap(in) const std::vector<IfcUtil::IfcBaseClass*>& (std::vector<IfcUtil::IfcBaseClass*> temp) {
/*
%typemap(in) const std::vector<express::Base>& (std::vector<express::Base> temp) {
if (!PyList_Check($input)) {
PyErr_SetString(PyExc_TypeError, "Expected a list.");
return NULL;
@@ -517,65 +497,66 @@ assign_matrix_access(revolve);
for (Py_ssize_t i = 0; i < PyList_Size($input); ++i) {
PyObject* pyObj = PyList_GetItem($input, i);
void* ptr = 0;
int res = SWIG_ConvertPtr(pyObj, &ptr, SWIGTYPE_p_IfcUtil__IfcBaseClass, 0);
int res = SWIG_ConvertPtr(pyObj, &ptr, SWIGTYPE_p_express__Base, 0);
if (!SWIG_IsOK(res)) {
PyErr_SetString(PyExc_TypeError, "List item is not of type IfcBaseClass.");
return NULL;
}
temp.push_back(reinterpret_cast<IfcUtil::IfcBaseClass*>(ptr));
temp.push_back(reinterpret_cast<express::Base>(ptr));
}
}
*/
std::vector<clash> clash_intersection_many(const std::vector<IfcUtil::IfcBaseClass*>& set_a, const std::vector<IfcUtil::IfcBaseClass*>& set_b, double tolerance, bool check_all) const {
std::vector<const IfcUtil::IfcBaseEntity*> set_a_entities;
std::vector<const IfcUtil::IfcBaseEntity*> set_b_entities;
for (auto* e : set_a) {
if (!e->declaration().is("IfcProduct")) {
std::vector<clash> clash_intersection_many(const std::vector<express::Base>& set_a, const std::vector<express::Base>& set_b, double tolerance, bool check_all) const {
std::vector<express::Entity> set_a_entities;
std::vector<express::Entity> set_b_entities;
for (auto& e : set_a) {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("All instances should be of type IfcProduct");
}
set_a_entities.push_back(static_cast<IfcUtil::IfcBaseEntity*>(e));
set_a_entities.push_back(e.as<express::Entity>());
}
for (auto* e : set_b) {
if (!e->declaration().is("IfcProduct")) {
for (auto& e : set_b) {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("All instances should be of type IfcProduct");
}
set_b_entities.push_back(static_cast<IfcUtil::IfcBaseEntity*>(e));
set_b_entities.push_back(e.as<express::Entity>());
}
return $self->clash_intersection_many(set_a_entities, set_b_entities, tolerance, check_all);
}
std::vector<clash> clash_collision_many(const std::vector<IfcUtil::IfcBaseClass*>& set_a, const std::vector<IfcUtil::IfcBaseClass*>& set_b, bool allow_touching) const {
std::vector<const IfcUtil::IfcBaseEntity*> set_a_entities;
std::vector<const IfcUtil::IfcBaseEntity*> set_b_entities;
for (auto* e : set_a) {
if (!e->declaration().is("IfcProduct")) {
std::vector<clash> clash_collision_many(const std::vector<express::Base>& set_a, const std::vector<express::Base>& set_b, bool allow_touching) const {
std::vector<express::Entity> set_a_entities;
std::vector<express::Entity> set_b_entities;
for (auto& e : set_a) {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("All instances should be of type IfcProduct");
}
set_a_entities.push_back(static_cast<IfcUtil::IfcBaseEntity*>(e));
set_a_entities.push_back(e.as<express::Entity>());
}
for (auto* e : set_b) {
if (!e->declaration().is("IfcProduct")) {
for (auto& e : set_b) {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("All instances should be of type IfcProduct");
}
set_b_entities.push_back(static_cast<IfcUtil::IfcBaseEntity*>(e));
set_b_entities.push_back(e.as<express::Entity>());
}
return $self->clash_collision_many(set_a_entities, set_b_entities, allow_touching);
}
std::vector<clash> clash_clearance_many(const std::vector<IfcUtil::IfcBaseClass*>& set_a, const std::vector<IfcUtil::IfcBaseClass*>& set_b, double clearance, bool check_all) const {
std::vector<const IfcUtil::IfcBaseEntity*> set_a_entities;
std::vector<const IfcUtil::IfcBaseEntity*> set_b_entities;
for (auto* e : set_a) {
if (!e->declaration().is("IfcProduct")) {
std::vector<clash> clash_clearance_many(const std::vector<express::Base>& set_a, const std::vector<express::Base>& set_b, double clearance, bool check_all) const {
std::vector<express::Entity> set_a_entities;
std::vector<express::Entity> set_b_entities;
for (auto& e : set_a) {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("All instances should be of type IfcProduct");
}
set_a_entities.push_back(static_cast<IfcUtil::IfcBaseEntity*>(e));
set_a_entities.push_back(e.as<express::Entity>());
}
for (auto* e : set_b) {
if (!e->declaration().is("IfcProduct")) {
for (auto& e : set_b) {
if (!e.declaration().is("IfcProduct")) {
throw IfcParse::IfcException("All instances should be of type IfcProduct");
}
set_b_entities.push_back(static_cast<IfcUtil::IfcBaseEntity*>(e));
set_b_entities.push_back(e.as<express::Entity>());
}
return $self->clash_clearance_many(set_a_entities, set_b_entities, clearance, check_all);
}
@@ -624,9 +605,9 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
%}
// Note that these elements ARE to be owned by SWIG/Python
%typemap(out) boost::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*> {
%typemap(out) std::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*> {
// See which type is set and return appropriate
$result = boost::apply_visitor(ShapeRTTI(), (boost::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*>) $1);
$result = std::visit(ShapeRTTI(), (std::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*>) $1);
}
%newobject construct_iterator;
@@ -773,7 +754,7 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
return { reinterpret_cast<const char*>(data), 16 * sizeof(double) };
}
const IfcUtil::IfcBaseClass* product_() const {
const express::Base product_() const {
return $self->product();
}
@@ -882,40 +863,39 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
}
template <typename Schema>
static boost::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*> helper_fn_create_shape(const std::string& geometry_library, ifcopenshell::geometry::Settings& st, IfcUtil::IfcBaseClass* instance, IfcUtil::IfcBaseClass* representation = 0) {
IfcParse::IfcFile* file = instance->file_;
static std::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*> helper_fn_create_shape(const std::string& geometry_library, ifcopenshell::geometry::Settings& st, const express::Base& instance, const express::Base& representation = express::Base()) {
IfcParse::IfcFile* file = instance.data()->file();
ifcopenshell::geometry::Converter kernel(ifcopenshell::geometry::kernels::construct(file, geometry_library, st), file, st);
if (typename Schema::IfcProduct* product = instance->as<typename Schema::IfcProduct>()) {
if (auto product = instance.as<typename Schema::IfcProduct>()) {
if (representation) {
if (!representation->declaration().is(Schema::IfcRepresentation::Class())) {
if (!representation.declaration().is(Schema::IfcRepresentation::Class())) {
throw IfcParse::IfcException("Supplied representation not of type IfcRepresentation");
}
}
if (!representation && !product->Representation()) {
if (!representation && !product.Representation()) {
throw IfcParse::IfcException("Representation is NULL");
}
typename Schema::IfcProductRepresentation* prodrep = product->Representation();
typename Schema::IfcRepresentation::list::ptr reps = prodrep->Representations();
typename Schema::IfcRepresentation* ifc_representation = representation ? representation->as<typename Schema::IfcRepresentation>() : nullptr;
auto prodrep = product.Representation();
auto reps = prodrep.Representations();
auto ifc_representation = representation ? representation.as<typename Schema::IfcRepresentation>() : Schema::IfcRepresentation();
if (!ifc_representation) {
// First, try to find a representation based on the settings
for (typename Schema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
typename Schema::IfcRepresentation* rep = *it;
if (!rep->RepresentationIdentifier()) {
for (auto& rep : reps) {
if (!rep.RepresentationIdentifier()) {
continue;
}
if (st.get<ifcopenshell::geometry::settings::OutputDimensionality>().get() != ifcopenshell::geometry::settings::CURVES) {
if (*rep->RepresentationIdentifier() == "Body" || *rep->RepresentationIdentifier() == "Facetation") {
if (*rep.RepresentationIdentifier() == "Body" || *rep.RepresentationIdentifier() == "Facetation") {
ifc_representation = rep;
break;
}
} else {
if (*rep->RepresentationIdentifier() == "Plan" || *rep->RepresentationIdentifier() == "Axis") {
if (*rep.RepresentationIdentifier() == "Plan" || *rep.RepresentationIdentifier() == "Axis") {
ifc_representation = rep;
break;
}
@@ -925,12 +905,11 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
// Otherwise, find a representation within the 'Model' or 'Plan' context
if (!ifc_representation) {
for (typename Schema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
typename Schema::IfcRepresentation* rep = *it;
typename Schema::IfcRepresentationContext* context = rep->ContextOfItems();
for (auto& rep : reps) {
auto context = rep.ContextOfItems();
// TODO: Remove redundancy with IfcGeomIterator.h
if (context->ContextType()) {
if (context.ContextType()) {
std::set<std::string> context_types;
if (st.get<ifcopenshell::geometry::settings::OutputDimensionality>().get() != ifcopenshell::geometry::settings::CURVES) {
context_types.insert("model");
@@ -941,7 +920,7 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
context_types.insert("plan");
}
std::string context_type_lc = *context->ContextType();
std::string context_type_lc = *context.ContextType();
for (std::string::iterator c = context_type_lc.begin(); c != context_type_lc.end(); ++c) {
*c = tolower(*c);
}
@@ -953,9 +932,9 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
}
if (!ifc_representation) {
if (reps->size()) {
if (reps.size()) {
// Return a random representation
ifc_representation = *reps->begin();
ifc_representation = reps.front();
} else {
throw IfcParse::IfcException("No suitable IfcRepresentation found");
}
@@ -964,8 +943,8 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
IfcGeom::BRepElement* brep = kernel.create_brep_for_representation_and_product(ifc_representation, product);
if (!brep) {
std::ostringstream oss_repr, oss_product;
ifc_representation->toString(oss_repr);
product->toString(oss_product);
ifc_representation.toString(oss_repr);
product.toString(oss_product);
throw IfcParse::IfcException("Failed to process shape. Product: " + oss_product.str() + ", representation: " + oss_repr.str());
}
if (st.get<ifcopenshell::geometry::settings::IteratorOutput>().get() == ifcopenshell::geometry::settings::SERIALIZED) {
@@ -979,7 +958,7 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
} else {
return brep;
}
} else if (instance->as<typename Schema::IfcPlacement>() != nullptr || instance->as<typename Schema::IfcObjectPlacement>()) {
} else if (instance.as<typename Schema::IfcPlacement>() || instance.as<typename Schema::IfcObjectPlacement>()) {
auto item = ifcopenshell::geometry::taxonomy::cast<ifcopenshell::geometry::taxonomy::matrix4>(kernel.mapping()->map(instance));
if (item == nullptr) {
throw IfcParse::IfcException("Failed to convert placement");
@@ -993,21 +972,21 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
return new IfcGeom::Transformation(kernel.settings(), item);
} else {
if (!representation) {
if (instance->declaration().is(Schema::IfcRepresentationItem::Class()) ||
instance->declaration().is(Schema::IfcRepresentation::Class()) ||
if (instance.declaration().is(Schema::IfcRepresentationItem::Class()) ||
instance.declaration().is(Schema::IfcRepresentation::Class()) ||
// https://github.com/IfcOpenShell/IfcOpenShell/issues/1649
instance->declaration().is(Schema::IfcProfileDef::Class())
instance.declaration().is(Schema::IfcProfileDef::Class())
) {
IfcGeom::ConversionResults shapes;
try {
shapes = kernel.convert(instance);
} catch (...) {
std::ostringstream oss;
instance->toString(oss);
instance.toString(oss);
throw IfcParse::IfcException("Failed to process shape. Instance: " + oss.str());
}
IfcGeom::Representation::BRep brep(kernel.settings(), instance->declaration().name(), to_locale_invariant_string(instance->as<IfcUtil::IfcBaseEntity>()->id()), shapes);
IfcGeom::Representation::BRep brep(kernel.settings(), instance.declaration().name(), to_locale_invariant_string(instance.id()), shapes);
try {
if (st.get<ifcopenshell::geometry::settings::IteratorOutput>().get() == ifcopenshell::geometry::settings::SERIALIZED) {
return new IfcGeom::Representation::Serialization(brep);
@@ -1022,7 +1001,7 @@ struct ShapeRTTI : public boost::static_visitor<PyObject*>
throw IfcParse::IfcException("Invalid additional representation specified");
}
}
return boost::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*>();
return std::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*>();
}
%}
@@ -1054,18 +1033,15 @@ ifcopenshell::geometry::taxonomy::item::ptr try_upcast(PyObject* obj0, swig_type
%}
%inline %{
ifcopenshell::geometry::taxonomy::item::ptr map_shape(ifcopenshell::geometry::Settings& settings, IfcUtil::IfcBaseClass* instance) {
if (instance->file_ == nullptr) {
throw std::runtime_error("Unable to map instance without file");
}
std::unique_ptr<ifcopenshell::geometry::abstract_mapping> mapping(ifcopenshell::geometry::impl::mapping_implementations().construct(instance->file_, settings));
ifcopenshell::geometry::taxonomy::item::ptr map_shape(ifcopenshell::geometry::Settings& settings, const express::Base& instance) {
std::unique_ptr<ifcopenshell::geometry::abstract_mapping> mapping(ifcopenshell::geometry::impl::mapping_implementations().construct(instance.data()->file(), settings));
return mapping->map(instance);
}
%}
%inline %{
static boost::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*> create_shape(ifcopenshell::geometry::Settings& settings, IfcUtil::IfcBaseClass* instance, IfcUtil::IfcBaseClass* representation = 0, const char* const geometry_library="opencascade") {
const std::string& schema_name = instance->declaration().schema()->name();
static std::variant<IfcGeom::Element*, IfcGeom::Representation::Representation*, IfcGeom::Transformation*> create_shape(ifcopenshell::geometry::Settings& settings, const express::Base& instance, const express::Base& representation = express::Base(), const char* const geometry_library="opencascade") {
const std::string& schema_name = instance.declaration().schema()->name();
#ifdef HAS_SCHEMA_2x3
if (schema_name == "IFC2X3") {
@@ -1135,22 +1111,22 @@ ifcopenshell::geometry::taxonomy::item::ptr try_upcast(PyObject* obj0, swig_type
#ifdef IFOPSH_WITH_OPENCASCADE
%inline %{
IfcUtil::IfcBaseClass* serialise(const std::string& schema_name, const std::string& shape_str, bool advanced=true) {
express::Base serialise(IfcParse::IfcFile& f, const std::string& shape_str, bool advanced=true) {
std::stringstream stream(shape_str);
BRepTools_ShapeSet shapes;
shapes.Read(stream);
const TopoDS_Shape& shp = shapes.Shape(shapes.NbShapes());
return IfcGeom::serialise(schema_name, shp, advanced);
return IfcGeom::serialise(f, shp, advanced);
}
IfcUtil::IfcBaseClass* tesselate(const std::string& schema_name, const std::string& shape_str, double d) {
express::Base tesselate(IfcParse::IfcFile& f, const std::string& shape_str, double d) {
std::stringstream stream(shape_str);
BRepTools_ShapeSet shapes;
shapes.Read(stream);
const TopoDS_Shape& shp = shapes.Shape(shapes.NbShapes());
return IfcGeom::tesselate(schema_name, shp, d);
return IfcGeom::tesselate(f, shp, d);
}
%}
@@ -1260,7 +1236,7 @@ ifcopenshell::geometry::taxonomy::item::ptr try_upcast(PyObject* obj0, swig_type
%include "../svgfill/src/svgfill.h"
%inline %{
std::vector<std::vector<svgfill::line_segment_2>> svg_to_line_segments(const std::string& data, const boost::optional<std::string>& class_name) {
std::vector<std::vector<svgfill::line_segment_2>> svg_to_line_segments(const std::string& data, const std::optional<std::string>& class_name) {
std::vector<std::vector<svgfill::line_segment_2>> r;
if (svgfill::svg_to_line_segments(data, class_name, r)) {
return r;
@@ -1278,7 +1254,7 @@ ifcopenshell::geometry::taxonomy::item::ptr try_upcast(PyObject* obj0, swig_type
}
}
std::vector<svgfill::polygon_2> svg_to_polygons(const std::string& data, const boost::optional<std::string>& class_name) {
std::vector<svgfill::polygon_2> svg_to_polygons(const std::string& data, const std::optional<std::string>& class_name) {
std::vector<svgfill::polygon_2> r;
if (svgfill::svg_to_polygons(data, class_name, r)) {
return r;