From 1eff60e5233286a42cea090e7e302c5c2a388f99 Mon Sep 17 00:00:00 2001
From: Christopher Lackner <christopher.lackner@tuwien.ac.at>
Date: Thu, 13 Dec 2018 14:39:13 +0100
Subject: [PATCH] default constructor for splinesurface

---
 libsrc/csg/splinesurface.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libsrc/csg/splinesurface.hpp b/libsrc/csg/splinesurface.hpp
index 07a7eb8a..a6e8a596 100644
--- a/libsrc/csg/splinesurface.hpp
+++ b/libsrc/csg/splinesurface.hpp
@@ -19,6 +19,8 @@ namespace netgen
     SplineSurface(shared_ptr<OneSurfacePrimitive> abaseprimitive, shared_ptr<Array<shared_ptr<OneSurfacePrimitive>>> acuts) :
       OneSurfacePrimitive(), baseprimitive(abaseprimitive), cuts(acuts)
     { ; }
+    // default constructor for archive
+    SplineSurface() {}
     virtual ~SplineSurface() { ; }
     
     const auto & GetSplines() const { return splines; }