From c207cc4e3f7e930bdb6b49db00f94fc6ad871fdb Mon Sep 17 00:00:00 2001
From: "Joachim Wuttke (l)" <j.wuttke@fz-juelich.de>
Date: Tue, 17 May 2016 09:32:23 +0200
Subject: [PATCH] make FormFactorPolyhedron pure virtual

---
 Core/FormFactors/FormFactorPolyhedron.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Core/FormFactors/FormFactorPolyhedron.h b/Core/FormFactors/FormFactorPolyhedron.h
index f1b327a07c6..a848cffb920 100644
--- a/Core/FormFactors/FormFactorPolyhedron.h
+++ b/Core/FormFactors/FormFactorPolyhedron.h
@@ -109,6 +109,7 @@ public:
 
     FormFactorPolyhedron() {}
 
+    virtual void onChange() = 0;
     virtual complex_t evaluate_for_q(const cvector_t q ) const final;
     complex_t evaluate_centered( const cvector_t q ) const;
 
-- 
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