From bc3dd06b269871119a4f76d919e9d0f5b73d353d Mon Sep 17 00:00:00 2001
From: Thomas Geymayer <tomgey@gmail.com>
Date: Mon, 17 Dec 2012 10:53:52 +0100
Subject: [PATCH] Missing file...

---
 simgear/nasal/cppbind/nasal_traits.hxx | 58 ++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 simgear/nasal/cppbind/nasal_traits.hxx

diff --git a/simgear/nasal/cppbind/nasal_traits.hxx b/simgear/nasal/cppbind/nasal_traits.hxx
new file mode 100644
index 00000000..2e216305
--- /dev/null
+++ b/simgear/nasal/cppbind/nasal_traits.hxx
@@ -0,0 +1,58 @@
+///@file
+/// Type traits used for converting from and to Nasal types
+///
+// Copyright (C) 2012  Thomas Geymayer <tomgey@gmail.com>
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
+
+#ifndef SG_NASAL_TRAITS_HXX_
+#define SG_NASAL_TRAITS_HXX_
+
+#include <boost/type_traits/integral_constant.hpp>
+
+namespace nasal
+{
+  template<class T>
+  struct is_vec2: public boost::integral_constant<bool, false> {};
+
+#define SG_MAKE_TRAIT(templ,type,attr)\
+  template templ\
+  struct attr< type >:\
+    public boost::integral_constant<bool, true> {};
+
+#ifdef SGVec2_H
+  SG_MAKE_TRAIT(<class T>, SGVec2<T>, is_vec2)
+#endif
+
+#ifdef OSG_VEC2B
+  SG_MAKE_TRAIT(<>, osg::Vec2b, is_vec2)
+#endif
+
+#ifdef OSG_VEC2D
+  SG_MAKE_TRAIT(<>, osg::Vec2d, is_vec2)
+#endif
+
+#ifdef OSG_VEC2F
+  SG_MAKE_TRAIT(<>, osg::Vec2f, is_vec2)
+#endif
+
+#ifdef OSG_VEC2S
+  SG_MAKE_TRAIT(<>, osg::Vec2s, is_vec2)
+#endif
+
+#undef SG_MAKE_TRAIT
+
+} // namespace nasal
+#endif /* SG_NASAL_TRAITS_HXX_ */
-- 
2.39.5