Initial implementation of a direct binary glTF serializer

2026-09-07 12:56:26 +00:00 · 2019-05-07 17:06:45 +02:00
parent 0fd3c69579
commit 3023e084a6
6 changed files with 411 additions and 3 deletions
@@ -0,0 +1,55 @@
+/********************************************************************************
+ *                                                                              *
+ * 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 GLTFSERIALIZER_H
+#define GLTFSERIALIZER_H
+
+#ifdef WITH_GLTF
+
+#include "../serializers/GeometrySerializer.h"
+
+#include <nlohmann/json.hpp>
+using json = nlohmann::json;
+
+#include <map>
+
+class GltfSerializer : public GeometrySerializer {
+private:
+	std::string filename_, tmp_filename1_, tmp_filename2_;
+	std::ofstream fstream_, tmp_fstream1_, tmp_fstream2_;
+	std::map<std::string, int> materials_, meshes_;
+	json json_, node_array_;
+
+	int writeMaterial(const IfcGeom::Material& style);
+public:
+	GltfSerializer(const std::string& filename, const SerializerSettings& settings);
+	virtual ~GltfSerializer() {}
+	bool ready();
+	void writeHeader();
+	void write(const IfcGeom::TriangulationElement<real_t>* o);
+	void write(const IfcGeom::BRepElement<real_t>* /*o*/) {}
+	void finalize();
+	bool isTesselated() const { return true; }
+	void setUnitNameAndMagnitude(const std::string& /*name*/, float /*magnitude*/) {}
+	void setFile(IfcParse::IfcFile*) {}
+};
+
+#endif
+
+#endif