-// Boost.Geometry (aka GGL, Generic Geometry Library)
+// Boost.Geometry
-// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
-// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
-// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
-
-// This file was modified by Oracle on 2016, 2017.
-// Modifications copyright (c) 2016-2017, Oracle and/or its affiliates.
+// Copyright (c) 2020, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
-// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
-// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
-
-// Use, modification and distribution is subject to the Boost Software License,
-// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
-// http://www.boost.org/LICENSE_1_0.txt)
+// Licensed under the Boost Software License version 1.0.
+// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_STRATEGIES_CARTESIAN_AREA_SURVEYOR_HPP
#define BOOST_GEOMETRY_STRATEGIES_CARTESIAN_AREA_SURVEYOR_HPP
-#include <boost/mpl/if.hpp>
-
-//#include <boost/geometry/arithmetic/determinant.hpp>
-#include <boost/geometry/core/coordinate_type.hpp>
-#include <boost/geometry/core/coordinate_dimension.hpp>
-#include <boost/geometry/strategies/area.hpp>
-#include <boost/geometry/util/select_most_precise.hpp>
-
-
-namespace boost { namespace geometry
-{
-
-namespace strategy { namespace area
-{
-
-/*!
-\brief Area calculation for cartesian points
-\ingroup strategies
-\details Calculates area using the Surveyor's formula, a well-known
- triangulation algorithm
-\tparam PointOfSegment \tparam_segment_point
-\tparam CalculationType \tparam_calculation
-
-\qbk{
-[heading See also]
-[link geometry.reference.algorithms.area.area_2_with_strategy area (with strategy)]
-}
-
-*/
-template
-<
- typename PointOfSegment,
- typename CalculationType = void
->
-class surveyor
-{
-public :
- // If user specified a calculation type, use that type,
- // whatever it is and whatever the point-type is.
- // Else, use the pointtype, but at least double
- typedef typename
- boost::mpl::if_c
- <
- boost::is_void<CalculationType>::type::value,
- typename select_most_precise
- <
- typename coordinate_type<PointOfSegment>::type,
- double
- >::type,
- CalculationType
- >::type return_type;
-
-
-private :
-
- class summation
- {
- friend class surveyor;
-
- return_type sum;
- public :
-
- inline summation() : sum(return_type())
- {
- // Strategy supports only 2D areas
- assert_dimension<PointOfSegment, 2>();
- }
- inline return_type area() const
- {
- return_type result = sum;
- return_type const two = 2;
- result /= two;
- return result;
- }
- };
-
-public :
- typedef summation state_type;
- typedef PointOfSegment segment_point_type;
-
- static inline void apply(PointOfSegment const& p1,
- PointOfSegment const& p2,
- summation& state)
- {
- // Below formulas are equivalent, however the two lower ones
- // suffer less from accuracy loss for great values of coordinates.
- // See: https://svn.boost.org/trac/boost/ticket/11928
-
- // SUM += x2 * y1 - x1 * y2;
- // state.sum += detail::determinant<return_type>(p2, p1);
-
- // SUM += (x2 - x1) * (y2 + y1)
- //state.sum += (return_type(get<0>(p2)) - return_type(get<0>(p1)))
- // * (return_type(get<1>(p2)) + return_type(get<1>(p1)));
-
- // SUM += (x1 + x2) * (y1 - y2)
- state.sum += (return_type(get<0>(p1)) + return_type(get<0>(p2)))
- * (return_type(get<1>(p1)) - return_type(get<1>(p2)));
- }
-
- static inline return_type result(summation const& state)
- {
- return state.area();
- }
-
-};
-
-#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
-
-namespace services
-{
- template <typename Point>
- struct default_strategy<cartesian_tag, Point>
- {
- typedef strategy::area::surveyor<Point> type;
- };
-
-} // namespace services
-
-#endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS
-
-
-}} // namespace strategy::area
-
+#include <boost/config/pragma_message.hpp>
+BOOST_PRAGMA_MESSAGE("This include file is deprecated and will be removed in the future.")
-}} // namespace boost::geometry
+#include <boost/geometry/strategy/cartesian/area.hpp>
#endif // BOOST_GEOMETRY_STRATEGIES_CARTESIAN_AREA_SURVEYOR_HPP