Merge of tangential_integration branch

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/trunk@1703 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 2134d8e5a61287a89e3e6c0bc9766f9c2abc405e

1 files changed, 76 insertions, 0 deletions

diff --git a/src/common/include/gudhi_patches/CGAL/NewKernel_d/Vector/determinant_of_iterator_to_points_from_iterator_to_vectors.h b/src/common/include/gudhi_patches/CGAL/NewKernel_d/Vector/determinant_of_iterator_to_points_from_iterator_to_vectors.h
new file mode 100644
index 00000000..b8efbe28
--- /dev/null
+++ b/src/common/include/gudhi_patches/CGAL/NewKernel_d/Vector/determinant_of_iterator_to_points_from_iterator_to_vectors.h
@@ -0,0 +1,76 @@
+// Copyright (c) 2014
+// INRIA Saclay-Ile de France (France)
+//
+// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public License as
+// published by the Free Software Foundation; either version 3 of the License,
+// or (at your option) any later version.
+//
+// Licensees holding a valid commercial license may use this file in
+// accordance with the commercial license agreement provided with the software.
+//
+// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// $URL$
+// $Id$
+//
+// Author(s)     : Marc Glisse
+
+#ifndef CGAL_VECTOR_DET_ITER_PTS_ITER_VEC_H
+#define CGAL_VECTOR_DET_ITER_PTS_ITER_VEC_H
+#include <functional>
+#include <CGAL/transforming_iterator.h>
+#include <CGAL/NewKernel_d/functor_tags.h>
+#include <CGAL/Dimension.h>
+
+namespace CGAL {
+
+template <class LA, class Dim_=typename LA::Dimension,
+	 class Max_dim_=typename LA::Max_dimension,
+	 bool = LA::template Property<Has_determinant_of_iterator_to_points_tag>::value,
+	 bool = LA::template Property<Has_determinant_of_iterator_to_vectors_tag>::value>
+struct Add_determinant_of_iterator_to_points_from_iterator_to_vectors : LA {
+  template< class D2, class D3=D2 >
+    struct Rebind_dimension {
+      typedef typename LA::template Rebind_dimension<D2,D3> LA2;
+      typedef Add_determinant_of_iterator_to_points_from_iterator_to_vectors<LA2> Other;
+    };
+};
+
+template <class LA, class Dim_,class Max_dim_>
+struct Add_determinant_of_iterator_to_points_from_iterator_to_vectors
+<LA, Dim_, Max_dim_, false, true> : LA {
+  typedef typename LA::NT NT;
+  typedef typename LA::Vector Vector;
+  template< class D2, class D3=D2 >
+    struct Rebind_dimension {
+      typedef typename LA::template Rebind_dimension<D2,D3> LA2;
+      typedef Add_determinant_of_iterator_to_points_from_iterator_to_vectors<LA2> Other;
+    };
+  template<class P,class=void> struct Property : LA::template Property<P> {};
+  template<class D> struct Property<Has_determinant_of_iterator_to_points_tag, D> :
+    boost::true_type {};
+
+  // TODO: use std::minus, boost::bind, etc
+  template<class T> struct Minus_fixed {
+    T const& a;
+    Minus_fixed(T const&a_):a(a_){}
+    T operator()(T const&b)const{return b-a;}
+  };
+  template<class Iter>
+  static NT determinant_of_iterator_to_points(Iter const&first, Iter const&end){
+    Vector const&a=*first; ++first;
+    Minus_fixed<Vector> f(a);
+    return LA::determinant_of_iterator_to_vectors(make_transforming_iterator(first,f),make_transforming_iterator(end,f));
+  }
+  template<class Iter>
+  static Sign sign_of_determinant_of_iterator_to_points(Iter const&first, Iter const&end){
+    Vector const&a=*first; ++first;
+    Minus_fixed<Vector> f(a);
+    return LA::sign_of_determinant_of_iterator_to_vectors(make_transforming_iterator(first,f),make_transforming_iterator(end,f));
+  }
+};
+
+}
+#endif