Program Listing for File element.h¶
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* Lesser GNU General Public License for more details. *
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#ifndef IFCGEOMELEMENT_H
#define IFCGEOMELEMENT_H
#include <string>
#include <algorithm>
#include <memory>
#include "../ifcparse/argument.h"
#include "../ifcparse/global_id.h"
#include "../ifcparse/logger.h"
#include "../ifcparse/instance_data.h"
#include "../ifcgeom/representation.h"
#include "../ifcgeom/ifc_geom_api.h"
namespace ifcopenshell::geom {
class transformation {
private:
ifcopenshell::geom::settings settings_;
ifcopenshell::geom::taxonomy::matrix4::ptr matrix_, matrix_orig_units_;
public:
transformation(const ifcopenshell::geom::settings& settings, const ifcopenshell::geom::taxonomy::matrix4::ptr& matrix)
: settings_(settings), matrix_(matrix)
{
const bool convert = settings.get<ifcopenshell::geom::settings::ConvertBackUnits>().get();
auto unit_magnitude = settings.get<ifcopenshell::geom::settings::LengthUnit>().get();
if (matrix_ && convert && unit_magnitude != 1.0) {
matrix_orig_units_ = ifcopenshell::geom::taxonomy::make<ifcopenshell::geom::taxonomy::matrix4>(*matrix);
// only multiple the translation components of the matrix with the unit magnitude, not the rotation/scaling components
matrix_orig_units_->components().col(3).head<3>() /= unit_magnitude;
} else {
matrix_orig_units_ = nullptr;
}
}
const ifcopenshell::geom::taxonomy::matrix4::ptr& data() const {
if (matrix_orig_units_) {
return matrix_orig_units_;
}
if (matrix_) {
return matrix_;
}
static ifcopenshell::geom::taxonomy::matrix4::ptr iden = ifcopenshell::geom::taxonomy::make<ifcopenshell::geom::taxonomy::matrix4>();
return iden;
}
};
class element {
private:
int _id;
int _parent_id;
std::string _name;
std::string _type;
std::string _guid;
std::string _context;
std::string _unique_id;
ifcopenshell::geom::transformation _transformation;
const express::entity product_;
std::vector<const ifcopenshell::geom::element*> _parents;
std::vector<std::shared_ptr<const ifcopenshell::geom::element>> _parent_storage;
friend class iterator;
void set_parents(std::vector<std::unique_ptr<ifcopenshell::geom::element>>&& newparents) {
_parents.clear();
_parent_storage.clear();
for (auto& parent : newparents) {
_parents.push_back(parent.get());
_parent_storage.emplace_back(std::move(parent));
}
}
public:
friend bool operator == (const element& element1, const element& element2) {
return element1.id() == element2.id();
}
// Use the id to compare, or the elevation is the elements are IfcBuildingStoreys and the elevation is set
friend bool operator < (const element& element1, const element& element2) {
if (element1.type() == "IfcBuildingStorey" && element2.type() == "IfcBuildingStorey") {
size_t attr_index = element1.product().declaration().as_entity()->attribute_index("Elevation");
auto elev_attr1 = element1.product().get_attribute_value(attr_index);
auto elev_attr2 = element2.product().get_attribute_value(attr_index);
if (!elev_attr1.isNull() && !elev_attr2.isNull()) {
double elev1 = elev_attr1;
double elev2 = elev_attr2;
return elev1 < elev2;
}
}
return element1.id() < element2.id();
}
int id() const { return _id; }
int parent_id() const { return _parent_id; }
const std::string& name() const { return _name; }
const std::string& type() const { return _type; }
const std::string& guid() const { return _guid; }
// Return the representation's identifier (e.g. "Body") if present, or it's context type (e.g. "Model").
const std::string& context() const { return _context; }
const std::string& unique_id() const { return _unique_id; }
const ifcopenshell::geom::transformation& transformation() const { return _transformation; }
const express::entity& product() const { return product_; }
const std::vector<const ifcopenshell::geom::element*>& parents() const { return _parents; }
void SetParents(std::vector<const ifcopenshell::geom::element*>& newparents) {
_parent_storage.clear();
_parents = newparents;
}
element(const ifcopenshell::geom::settings& settings, int id, int parent_id, const std::string& name, const std::string& type,
const std::string& guid, const std::string& context, const ifcopenshell::geom::taxonomy::matrix4::ptr& trsf, const express::entity& product)
: _id(id), _parent_id(parent_id), _name(name), _type(type), _guid(guid), _context(context), _transformation(settings, trsf)
, product_(product)
{
std::ostringstream oss;
if (type == "IfcProject") {
oss << "project";
} else {
try {
oss << "product-" << ifcopenshell::global_id(guid).formatted();
} catch (const std::exception& e) {
oss << "product";
ifcopenshell::logger::root().error("GEO", 39, e);
}
}
if (!_context.empty()) {
std::string ctx = _context;
boost::to_lower(ctx);
boost::replace_all(ctx, " ", "-");
oss << "-" << ctx;
}
_unique_id = oss.str();
}
virtual ~element() {}
};
class native_element : public element {
private:
std::shared_ptr<ifcopenshell::geom::native> _geometry;
public:
const std::shared_ptr<ifcopenshell::geom::native>& geometry_pointer() const { return _geometry; }
const ifcopenshell::geom::native& geometry() const { return *_geometry; }
native_element(int id, int parent_id, const std::string& name, const std::string& type, const std::string& guid,
const std::string& context, const ifcopenshell::geom::taxonomy::matrix4::ptr& trsf, const std::shared_ptr<ifcopenshell::geom::native>& geometry,
const express::entity& product)
: element(geometry->settings(), id, parent_id, name, type, guid, context, trsf, product)
, _geometry(geometry)
{}
bool calculate_projected_surface_area(double& along_x, double& along_y, double& along_z) const {
return geometry().calculate_projected_surface_area(this->transformation().data(), along_x, along_y, along_z);
}
native_element(const native_element& other) = default;
private:
native_element& operator=(const native_element& other);
};
class triangulation_element : public element {
private:
std::shared_ptr< ifcopenshell::geom::triangulation > _geometry;
public:
const ifcopenshell::geom::triangulation& geometry() const { return *_geometry; }
const std::shared_ptr< ifcopenshell::geom::triangulation>& geometry_pointer() const { return _geometry; }
triangulation_element(const ifcopenshell::geom::native_element& shape_model)
: element(shape_model)
, _geometry(std::make_shared<ifcopenshell::geom::triangulation>(shape_model.geometry()))
{}
triangulation_element(const ifcopenshell::geom::element& source, const std::shared_ptr<ifcopenshell::geom::triangulation>& geometry)
: element(source)
, _geometry(geometry)
{}
triangulation_element(const triangulation_element& other) = default;
private:
triangulation_element& operator=(const triangulation_element& other);
};
class serialized_element : public element {
private:
std::shared_ptr<ifcopenshell::geom::serialization> _geometry;
public:
const ifcopenshell::geom::serialization& geometry() const { return *_geometry; }
serialized_element(const native_element& shape_model)
: element(shape_model)
, _geometry(std::make_shared<ifcopenshell::geom::serialization>(shape_model.geometry()))
{}
serialized_element(const serialized_element& other) = default;
private:
serialized_element& operator=(const serialized_element& other);
};
}
#endif