Start working on LOD example

src/hdf5_usecases/CMakeLists.txt

@@ -19,3 +19,6 @@
 
 ADD_EXECUTABLE(hdf5_federate federate.cpp)
 TARGET_LINK_LIBRARIES(hdf5_federate IfcParse)
+
+ADD_EXECUTABLE(hdf5_lod lod.cpp)
+TARGET_LINK_LIBRARIES(hdf5_lod IfcParse IfcGeom)

src/hdf5_usecases/lod.cpp

@@ -0,0 +1,69 @@
+/********************************************************************************
+ *                                                                              *
+ * 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/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+#include "../../../src/ifcparse/IfcHdf5File.h"
+#include "../../../src/ifcgeom/IfcGeom.h"
+
+#include <Bnd_Box.hxx>
+#include <BRepBndLib.hxx>
+
+int main(int, char** argv) {
+	IfcParse::IfcFile f;
+	f.Init(argv[1]);
+
+	std::vector<IfcSchema::IfcProductDefinitionShape*> new_defs;
+	IfcSchema::IfcProductDefinitionShape::list::ptr defs = f.entitiesByType<IfcSchema::IfcProductDefinitionShape>();
+
+	IfcGeom::Kernel kernel;
+	kernel.initializeUnits(*f.entitiesByType<IfcSchema::IfcUnitAssignment>()->begin());
+
+	std::transform(defs->begin(), defs->end(), std::back_inserter(new_defs), [&kernel](IfcSchema::IfcProductDefinitionShape* def) {
+		Bnd_Box box;
+		auto reps = def->Representations();
+		IfcSchema::IfcRepresentationContext* context;
+
+		std::for_each(reps->begin(), reps->end(), [&kernel, &box, &context](auto rep) {
+			IfcGeom::IfcRepresentationShapeItems items;
+
+			if (rep->RepresentationIdentifier() == "Body") {
+				kernel.convert(rep, items);
+				context = rep->ContextOfItems();
+			}
+
+			for (auto& i : items) {
+				BRepBndLib::AddClose(i.Shape(), box);
+			}
+		});
+
+		double x1, y1, z1, x2, y2, z2;
+		box.Get(x1, y1, z1, x2, y2, z2);
+
+		IfcSchema::IfcCartesianPoint* corner = new IfcSchema::IfcCartesianPoint(std::vector<double>{x1, y1, z1});;
+		IfcSchema::IfcBoundingBox* bbox = new IfcSchema::IfcBoundingBox(corner, x2-x1, y2-y1, z2-z1);
+		IfcSchema::IfcRepresentationItem::list::ptr items(new IfcSchema::IfcRepresentationItem::list);
+		items->push(bbox);
+		
+		IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(context, std::string("Body"), std::string("BoundingBox"), items);
+		IfcSchema::IfcRepresentation::list::ptr new_reps(new IfcSchema::IfcRepresentation::list);
+		new_reps->push(rep);
+		
+		IfcSchema::IfcProductDefinitionShape* new_def = new IfcSchema::IfcProductDefinitionShape(boost::none, boost::none, new_reps);
+		return new_def;
+	});
+}