Schema dependent serializers

2026-08-09 17:31:45 +00:00 · 2018-03-04 10:43:40 +01:00
parent 0a809ba127
commit 6685ea6d7a
15 changed files with 545 additions and 0 deletions
@@ -0,0 +1,67 @@
+/********************************************************************************
+ *                                                                              *
+ * 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 <string>
+#include <fstream>
+#include <cstdio>
+
+#include <Standard_Version.hxx>
+#include <BRepBuilderAPI_Transform.hxx>
+
+#include "OpenCascadeBasedSerializer.h"
+
+bool OpenCascadeBasedSerializer::ready() {
+	std::ofstream test_file(out_filename.c_str(), std::ios_base::binary);
+	bool succeeded = test_file.is_open();
+	test_file.close();
+	remove(out_filename.c_str());
+	return succeeded;
+}
+
+void OpenCascadeBasedSerializer::write(const IfcGeom::BRepElement<real_t>* o) {
+	TopoDS_Shape compound = o->geometry().as_compound();
+
+	if (o->geometry().settings().get(IfcGeom::IteratorSettings::CONVERT_BACK_UNITS)) {
+		gp_Trsf scale;
+		scale.SetScaleFactor(1.0 / o->geometry().settings().unit_magnitude());
+		
+		compound = BRepBuilderAPI_Transform(compound, scale, true).Shape();
+	}
+
+	writeShape(compound);
+}
+
+#define RATHER_SMALL (1e-3)
+#define APPROXIMATELY_THE_SAME(a,b) (fabs(a-b) < RATHER_SMALL)
+
+const char* OpenCascadeBasedSerializer::getSymbolForUnitMagnitude(float mag) {
+	if (APPROXIMATELY_THE_SAME(mag, 0.001f)) {
+		return "MM";
+	} else if (APPROXIMATELY_THE_SAME(mag, 0.01f)) {
+		return "CM";
+	} else if (APPROXIMATELY_THE_SAME(mag, 1.0f)) {
+		return "M";
+	} else if (APPROXIMATELY_THE_SAME(mag, 0.3048f)) {
+		return "FT";
+	} else if (APPROXIMATELY_THE_SAME(mag, 0.0254f)) {
+		return "INCH";
+	} else {
+		return 0;
+	}
+}