From 3f863ae4594190a94f9944e093b971cbfcff52b3 Mon Sep 17 00:00:00 2001
From: Marius Kintel <marius@kintel.net>
Date: Thu, 1 Sep 2011 22:42:46 +0200
Subject: Added isempty()


diff --git a/src/polyset.h b/src/polyset.h
index 8f23130..e80d182 100644
--- a/src/polyset.h
+++ b/src/polyset.h
@@ -24,6 +24,7 @@ public:
 	PolySet();
 	~PolySet();
 
+	bool empty() const { return polygons.size() == 0; }
 	void append_poly();
 	void append_vertex(double x, double y, double z = 0.0);
 	void insert_vertex(double x, double y, double z = 0.0);
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