--- a/src/linetypes/modelobject.h	Thu Feb 15 14:59:04 2018 +0200
+++ b/src/linetypes/modelobject.h	Thu Feb 22 11:41:58 2018 +0200
@@ -76,6 +76,7 @@
 	void move (Vertex vect);
 	LDObject* next() const;
 	virtual int numVertices() const;
+	virtual int numPolygonVertices() const;
 	virtual QString objectListText() const;
 	LDObject* previous() const;
 	QColor randomColor() const;