--- a/src/basics.cpp	Wed Feb 17 03:24:07 2016 +0200
+++ b/src/basics.cpp	Wed Feb 17 19:54:21 2016 +0200
@@ -362,4 +362,9 @@
 const Vertex& BoundingBox::vertex1() const
 {
 	return m_vertex1;
-}
\ No newline at end of file
+}
+
+uint qHash(const Vertex& key)
+{
+	return qHash(static_cast<const QVector3D&>(key));
+}