mirror of https://github.com/CGAL/cgal
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
// ======================================================================
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//
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// Copyright (c) 2000 The CGAL Consortium
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//
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// This software and related documentation is part of an INTERNAL release
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// of the Computational Geometry Algorithms Library (CGAL). It is not
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// intended for general use.
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//
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// ----------------------------------------------------------------------
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// release :
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// release_date :
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//
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// file : include/CGAL/Kernel/traits_aids.h
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// package : Kernel_basic
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// revision : $Revision$
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// revision_date : $Date$
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// author(s) : Stefan Schirra
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//
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// coordinator : MPI, Saarbruecken
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// ======================================================================
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#ifndef CGAL_KERNEL_TRAITS_AIDS_H
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#define CGAL_KERNEL_TRAITS_AIDS_H
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namespace CGAL {
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template <class Leftturn>
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class Rightturn_by_leftturn
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{
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public:
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Rightturn_by_leftturn(const Leftturn& l) : leftturn(l) {}
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template <class Point>
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bool
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operator()(const Point& p, const Point& q, const Point& r) const
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{ return leftturn( q, p, r); }
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private:
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Leftturn leftturn;
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};
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template <class BinaryPredicate>
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class Invert_binary
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{
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public:
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Invert_binary(const BinaryPredicate& p) : pred(p) {}
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template <class Arg1, class Arg2>
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bool
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operator()(const Arg1& a1, const Arg2& a2)
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{ return !pred(a1,a2); }
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protected:
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BinaryPredicate pred;
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};
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} // namespace CGAL
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#endif // CGAL_KERNEL_TRAITS_AIDS_H
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