First push of a more all-round geometrical file conversion utility

2026-08-14 03:14:23 +00:00 · 2013-03-24 10:48:39 +00:00
parent 852cb7d8c4
commit 5d4ff0b54a
20 changed files with 1330 additions and 264 deletions
@@ -0,0 +1,84 @@
+/********************************************************************************
+ *                                                                              *
+ * 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 "../ifcconvert/SurfaceStyle.h"
+
+#include "WavefrontOBJSerializer.h"
+
+bool WaveFrontOBJSerializer::ready() {
+	return obj_stream.is_open() && mtl_stream.is_open();
+}
+
+void WaveFrontOBJSerializer::writeHeader() {
+	obj_stream << "# File generated by IfcOpenShell " << IFCOPENSHELL_VERSION << std::endl;
+#ifdef WIN32
+	const char dir_separator = '\\';
+#else
+	const char dir_separator = '/';
+#endif
+	std::string mtl_basename = mtl_filename;
+	std::string::size_type slash = mtl_basename.find_last_of(dir_separator);
+	if (slash != std::string::npos) {
+		mtl_basename = mtl_basename.substr(slash+1);
+	}
+	obj_stream << "mtllib " << mtl_basename << std::endl;
+	mtl_stream << "# File generated by IfcOpenShell " << IFCOPENSHELL_VERSION << std::endl;	
+}
+
+void WaveFrontOBJSerializer::writeMaterial(const SurfaceStyle& style) {			
+	mtl_stream << "newmtl " << style.Name() << std::endl
+				<< "Kd " << style.Diffuse().R()  << " " << style.Diffuse().G()  << " " << style.Diffuse().B()  << std::endl
+				<< "Ks " << style.Specular().R() << " " << style.Specular().G() << " " << style.Specular().B() << std::endl
+				<< "Ka " << style.Ambient().R()  << " " << style.Ambient().G()  << " " << style.Ambient().B()  << std::endl
+				<< "Ns " << style.Specularity()  << std::endl
+				<< "Tr " << style.Transparency() << std::endl
+				<< "d "  << style.Transparency() << std::endl
+				<< "D "  << style.Transparency() << std::endl;			
+}
+
+void WaveFrontOBJSerializer::writeTesselated(const IfcGeomObjects::IfcGeomObject* o) {
+	const std::string name = o->name.empty() ? o->guid : o->name;
+	obj_stream << "g " << name << std::endl;
+	obj_stream << "s 1" << std::endl;
+	obj_stream << "usemtl " << o->type << std::endl;
+	if (materials.find(o->type) == materials.end()) {
+		writeMaterial(GetDefaultMaterial(o->type));
+		materials.insert(o->type);
+	}
+	const int vcount = o->mesh->verts.size() / 3;
+	for ( IfcGeomObjects::FltIt it = o->mesh->verts.begin(); it != o->mesh->verts.end(); ) {
+		const double x = *(it++);
+		const double y = *(it++);
+		const double z = *(it++);
+		obj_stream << "v " << x << " " << y << " " << z << std::endl;
+	}
+	for ( IfcGeomObjects::FltIt it = o->mesh->normals.begin(); it != o->mesh->normals.end(); ) {
+		const double x = *(it++);
+		const double y = *(it++);
+		const double z = *(it++);
+		obj_stream << "vn " << x << " " << y << " " << z << std::endl;
+	}
+	for ( IfcGeomObjects::IntIt it = o->mesh->faces.begin(); it != o->mesh->faces.end(); ) {
+		const int v1 = *(it++)+vcount_total;
+		const int v2 = *(it++)+vcount_total;
+		const int v3 = *(it++)+vcount_total;
+		obj_stream << "f " << v1 << "//" << v1 << " " << v2 << "//" << v2 << " " << v3 << "//" << v3 << std::endl;
+	}
+    vcount_total += vcount;
+}