Add source code for generation of IfcTriangulatedFaceSet test case

2026-08-12 10:33:20 +00:00 · 2015-06-16 13:00:19 +00:00
parent c4e8a409de
commit b748c0a573
2 changed files with 6063 additions and 0 deletions
@@ -0,0 +1,85 @@
+/********************************************************************************
+ *                                                                              *
+ * 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/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+/********************************************************************************
+ *                                                                              *
+ * Example that generates an IfcTriangulatedFaceSet                             *
+ *                                                                              *
+ ********************************************************************************/
+
+#include "../ifcparse/Ifc4.h"
+#include "../ifcparse/IfcUtil.h"
+#include "../ifcparse/IfcHierarchyHelper.h"
+
+#include "suzanne_geometry.h"
+
+typedef std::string S;
+typedef IfcParse::IfcGlobalId guid;
+boost::none_t const null = (static_cast<boost::none_t>(0));
+
+template <typename T>
+std::vector< std::vector<T> > create_vector_from_array(const T* arr, unsigned size) {
+	std::vector< std::vector<T> > result;
+	result.reserve(size);	
+	
+	for (unsigned i = 0; i < size; ) {
+		std::vector<T> ts; ts.reserve(3);
+		for (unsigned j = 0; j < 3; ++i, ++j) {
+			ts.push_back(arr[i]);
+		}
+		result.push_back(ts);
+	}
+
+	return result;
+}
+
+int main(int argc, char** argv) {
+	IfcHierarchyHelper file;
+
+	IfcSchema::IfcBuildingElementProxy* product = new IfcSchema::IfcBuildingElementProxy(
+		guid(), 0, S("Blender's Suzanne"), null, null, 0, 0, null, null);
+	file.addBuildingProduct(product);
+	product->setOwnerHistory(file.getSingle<IfcSchema::IfcOwnerHistory>());
+
+	product->setObjectPlacement(file.addLocalPlacement());
+
+	IfcSchema::IfcRepresentation::list::ptr reps (new IfcSchema::IfcRepresentation::list);
+	IfcSchema::IfcRepresentationItem::list::ptr items (new IfcSchema::IfcRepresentationItem::list);
+
+	std::vector< std::vector< double > > vertices_vector = create_vector_from_array(vertices, sizeof(vertices) / sizeof(vertices[0]));
+	std::vector< std::vector< int > > indices_vector = create_vector_from_array(indices, sizeof(indices) / sizeof(indices[0]));
+
+	IfcSchema::IfcCartesianPointList3D* coordinates = new IfcSchema::IfcCartesianPointList3D(vertices_vector);	
+	IfcSchema::IfcTriangulatedFaceSet* faceset = new IfcSchema::IfcTriangulatedFaceSet(coordinates, null, null, indices_vector, null);
+		
+	items->push(faceset);
+	IfcSchema::IfcShapeRepresentation* rep = new IfcSchema::IfcShapeRepresentation(
+		file.getRepresentationContext("Model"), S("Body"), S("SurfaceModel"), items);
+	reps->push(rep);
+
+	IfcSchema::IfcProductDefinitionShape* shape = new IfcSchema::IfcProductDefinitionShape(0, 0, reps);
+	file.addEntity(shape);
+		
+	product->setRepresentation(shape);
+
+	const std::string filename = "tesselated_faceset.ifc";
+	file.header().file_name().name(filename);
+	std::ofstream f(filename.c_str());
+	f << file;
+}