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IfcOpenShell/src/ifcgeom/IfcGeomElement.h
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/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
#ifndef IFCGEOMELEMENT_H
#define IFCGEOMELEMENT_H
#include <string>
#include <algorithm>
#include "../ifcparse/Argument.h"
#include "../ifcparse/IfcGlobalId.h"
#include "../ifcparse/IfcLogger.h"
#include "../ifcgeom/IfcGeomRepresentation.h"
#include "../ifcgeom/ifc_geom_api.h"
namespace IfcGeom {
class Transformation {
private:
ifcopenshell::geometry::Settings settings_;
ifcopenshell::geometry::taxonomy::matrix4::ptr matrix_, matrix_orig_units_;
public:
Transformation(const ifcopenshell::geometry::Settings& settings, const ifcopenshell::geometry::taxonomy::matrix4::ptr& matrix)
: settings_(settings), matrix_(matrix)
{
const bool convert = settings.get<ifcopenshell::geometry::settings::ConvertBackUnits>().get();
auto unit_magnitude = settings.get<ifcopenshell::geometry::settings::LengthUnit>().get();
if (matrix_ && convert && unit_magnitude != 1.0) {
matrix_orig_units_ = ifcopenshell::geometry::taxonomy::make<ifcopenshell::geometry::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::geometry::taxonomy::matrix4::ptr& data() const {
if (matrix_orig_units_) {
return matrix_orig_units_;
}
if (matrix_) {
return matrix_;
}
static ifcopenshell::geometry::taxonomy::matrix4::ptr iden = ifcopenshell::geometry::taxonomy::make<ifcopenshell::geometry::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;
Transformation _transformation;
const IfcUtil::IfcBaseEntity* product_;
std::vector<const IfcGeom::Element*> _parents;
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 Transformation& transformation() const { return _transformation; }
const IfcUtil::IfcBaseEntity* product() const { return product_; }
const std::vector<const IfcGeom::Element*>& parents() const { return _parents; }
void SetParents(std::vector<const IfcGeom::Element*>& newparents) { _parents = newparents; }
Element(const ifcopenshell::geometry::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::geometry::taxonomy::matrix4::ptr& trsf, const IfcUtil::IfcBaseEntity* 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-" << IfcParse::IfcGlobalId(guid).formatted();
} catch (const std::exception& e) {
oss << "product";
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 BRepElement : public Element {
private:
boost::shared_ptr<IfcGeom::Representation::BRep> _geometry;
public:
const boost::shared_ptr<IfcGeom::Representation::BRep>& geometry_pointer() const { return _geometry; }
const IfcGeom::Representation::BRep& geometry() const { return *_geometry; }
BRepElement(int id, int parent_id, const std::string& name, const std::string& type, const std::string& guid,
const std::string& context, const ifcopenshell::geometry::taxonomy::matrix4::ptr& trsf, const boost::shared_ptr<IfcGeom::Representation::BRep>& geometry,
const IfcUtil::IfcBaseEntity* 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);
}
private:
BRepElement(const BRepElement& other);
BRepElement& operator=(const BRepElement& other);
};
class TriangulationElement : public Element {
private:
boost::shared_ptr< IfcGeom::Representation::Triangulation > _geometry;
public:
const IfcGeom::Representation::Triangulation& geometry() const { return *_geometry; }
const boost::shared_ptr< IfcGeom::Representation::Triangulation>& geometry_pointer() const { return _geometry; }
TriangulationElement(const IfcGeom::BRepElement& shape_model)
: Element(shape_model)
, _geometry(boost::shared_ptr<IfcGeom::Representation::Triangulation>(new IfcGeom::Representation::Triangulation(shape_model.geometry())))
{}
TriangulationElement(const IfcGeom::Element& element, const boost::shared_ptr<IfcGeom::Representation::Triangulation>& geometry)
: Element(element)
, _geometry(geometry)
{}
private:
TriangulationElement(const TriangulationElement& other);
TriangulationElement& operator=(const TriangulationElement& other);
};
class SerializedElement : public Element {
private:
IfcGeom::Representation::Serialization* _geometry;
public:
const IfcGeom::Representation::Serialization& geometry() const { return *_geometry; }
SerializedElement(const BRepElement& shape_model)
: Element(shape_model)
, _geometry(new IfcGeom::Representation::Serialization(shape_model.geometry()))
{}
virtual ~SerializedElement() {
delete _geometry;
}
private:
SerializedElement(const SerializedElement& other);
SerializedElement& operator=(const SerializedElement& other);
};
}
#endif
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