From f1c17e791f9510111db535fd8d55699cbcff7210 Mon Sep 17 00:00:00 2001
From: Marius Kintel <marius@kintel.net>
Date: Fri, 2 Sep 2011 20:06:03 +0200
Subject: Added empty()


diff --git a/src/CGAL_Nef_polyhedron.h b/src/CGAL_Nef_polyhedron.h
index 9cac629..616ba23 100644
--- a/src/CGAL_Nef_polyhedron.h
+++ b/src/CGAL_Nef_polyhedron.h
@@ -13,6 +13,7 @@ public:
 	CGAL_Nef_polyhedron(CGAL_Nef_polyhedron3 *p) : dim(3), p2(0), p3(p) {}
 	~CGAL_Nef_polyhedron() {}
 
+	bool empty() const { return (dim == 0 || !p2 && !p3); }
 	CGAL_Nef_polyhedron &operator+=(const CGAL_Nef_polyhedron &other);
 	CGAL_Nef_polyhedron &operator*=(const CGAL_Nef_polyhedron &other);
 	CGAL_Nef_polyhedron &operator-=(const CGAL_Nef_polyhedron &other);
-- 
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