Keep moving schema agnostic code out of kernel

src/ifcgeom_schema_agnostic/wire_utils.h

@@ -0,0 +1,28 @@
+#include <gp_Pln.hxx>
+#include <TopoDS_Wire.hxx>
+#include <TopTools_ListOfShape.hxx>
+
+#include <vector>
+
+namespace IfcGeom {
+	namespace util {
+		bool approximate_plane_through_wire(const TopoDS_Wire& wire, gp_Pln& plane, double eps);
+
+		bool flatten_wire(TopoDS_Wire& wire, double eps);
+
+		enum triangulate_wire_result {
+			TRIANGULATE_WIRE_FAIL,
+			TRIANGULATE_WIRE_OK,
+			TRIANGULATE_WIRE_NON_MANIFOLD,
+		};
+
+		/// Triangulate the set of wires. The firstmost wire is assumed to be the outer wire.
+		triangulate_wire_result triangulate_wire(const std::vector<TopoDS_Wire>& wires, TopTools_ListOfShape& faces);
+
+		// eps: tolerance added to wire intersection checks, can be zero
+		// eps_real: tolerance used to construct new edge geometry around intersection points, cannot be zero
+		bool wire_intersections(const TopoDS_Wire& wire, TopTools_ListOfShape& wires, double eps, double eps_real);
+
+		void select_largest(const TopTools_ListOfShape& shapes, TopoDS_Shape& largest);
+	}
+}