Add support for IfcSectionedSurface

src/ifcgeom/infra_sweep_helper.h

@@ -0,0 +1,26 @@
+#ifndef LINEAR_SWEEP_HELPER_H
+#define LINEAR_SWEEP_HELPER_H
+
+#include "taxonomy.h"
+#include "ConversionSettings.h"
+
+namespace ifcopenshell {
+
+	namespace geometry {
+		
+		struct cross_section {
+			double dist_along;
+			taxonomy::geom_item::ptr section_geometry;
+			Eigen::Vector3d offset;
+
+			bool operator <(const cross_section& other) const {
+				return dist_along < other.dist_along;
+			}
+		};
+
+		taxonomy::loft::ptr make_loft(const Settings& settings_, const IfcUtil::IfcBaseClass* inst, const taxonomy::piecewise_function::ptr& directrix, std::vector<cross_section>& cross_sections);
+	}
+
+}
+
+#endif