FM / cartesian

/usr/include/boost/geometry/strategies/cartesian/

/usr/include/boost/geometry/strategies/cartesian

Name	Size	Mode	Actions
area.hpp	3958	0644	edit dl rm
area_surveyor.hpp	1221	0644	edit dl rm
azimuth.hpp	1212	0644	edit dl rm
box_in_box.hpp	10614	0644	edit dl rm
buffer_end_flat.hpp	3757	0644	edit dl rm
buffer_end_round.hpp	6084	0644	edit dl rm
buffer_join_miter.hpp	4540	0644	edit dl rm
buffer_join_round.hpp	6206	0644	edit dl rm
buffer_join_round_by_divide.hpp	4659	0644	edit dl rm
buffer_point_circle.hpp	4016	0644	edit dl rm
buffer_point_square.hpp	3654	0644	edit dl rm
buffer_side_straight.hpp	4587	0644	edit dl rm
centroid_average.hpp	2880	0644	edit dl rm
centroid_bashein_detmer.hpp	8541	0644	edit dl rm
centroid_weighted_length.hpp	4855	0644	edit dl rm
densify.hpp	3902	0644	edit dl rm
disjoint_box_box.hpp	2985	0644	edit dl rm
disjoint_segment_box.hpp	8965	0644	edit dl rm
distance_projected_point.hpp	9635	0644	edit dl rm
distance_projected_point_ax.hpp	9835	0644	edit dl rm
distance_pythagoras.hpp	7674	0644	edit dl rm
distance_pythagoras_box_box.hpp	8993	0644	edit dl rm
distance_pythagoras_point_box.hpp	9230	0644	edit dl rm
distance_segment_box.hpp	6893	0644	edit dl rm
envelope.hpp	4299	0644	edit dl rm
envelope_box.hpp	3479	0644	edit dl rm
envelope_multipoint.hpp	1442	0644	edit dl rm
envelope_point.hpp	2963	0644	edit dl rm
envelope_segment.hpp	2458	0644	edit dl rm
expand_box.hpp	1868	0644	edit dl rm
expand_point.hpp	3340	0644	edit dl rm
expand_segment.hpp	1900	0644	edit dl rm
index.hpp	6976	0644	edit dl rm
intersection.hpp	30855	0644	edit dl rm
io.hpp	1873	0644	edit dl rm
line_interpolate.hpp	3772	0644	edit dl rm
point_in_box.hpp	8761	0644	edit dl rm
point_in_point.hpp	3543	0644	edit dl rm
point_in_poly_crossings_multiply.hpp	3593	0644	edit dl rm
point_in_poly_franklin.hpp	3464	0644	edit dl rm
point_in_poly_winding.hpp	9889	0644	edit dl rm
point_order.hpp	1024	0644	edit dl rm
side_by_triangle.hpp	9669	0644	edit dl rm
turn_in_ring_winding.hpp	7463	0644	edit dl rm

Edit: /usr/include/boost/geometry/strategies/cartesian/centroid_weighted_length.hpp (4855B)

// Boost.Geometry (aka GGL, Generic Geometry Library)

// This file was modified by Oracle on 2015.
// Modifications copyright (c) 2015, 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)

#ifndef BOOST_GEOMETRY_STRATEGIES_CARTESIAN_CENTROID_WEIGHTED_LENGTH_HPP
#define BOOST_GEOMETRY_STRATEGIES_CARTESIAN_CENTROID_WEIGHTED_LENGTH_HPP

#include <boost/math/special_functions/fpclassify.hpp>
#include <boost/numeric/conversion/cast.hpp>

#include <boost/geometry/algorithms/detail/distance/interface.hpp>
#include <boost/geometry/algorithms/detail/distance/point_to_geometry.hpp>
#include <boost/geometry/arithmetic/arithmetic.hpp>
#include <boost/geometry/util/for_each_coordinate.hpp>
#include <boost/geometry/util/select_most_precise.hpp>
#include <boost/geometry/strategies/centroid.hpp>
#include <boost/geometry/strategies/default_distance_result.hpp>

// Helper geometry
#include <boost/geometry/geometries/point.hpp>

namespace boost { namespace geometry
{

namespace strategy { namespace centroid
{

namespace detail
{

template <typename Type, std::size_t DimensionCount>
struct weighted_length_sums
{
    typedef typename geometry::model::point
        <
            Type, DimensionCount,
            cs::cartesian
        > work_point;

Type length;
    work_point average_sum;

inline weighted_length_sums()
        : length(Type())
    {
        geometry::assign_zero(average_sum);
    }
};
}

template
<
    typename Point,
    typename PointOfSegment = Point
>
class weighted_length
{
private :
    typedef typename select_most_precise
        <
            typename default_distance_result<Point>::type,
            typename default_distance_result<PointOfSegment>::type
        >::type distance_type;

public :
    typedef detail::weighted_length_sums
        <
            distance_type,
            geometry::dimension<Point>::type::value
        > state_type;

static inline void apply(PointOfSegment const& p1,
            PointOfSegment const& p2, state_type& state)
    {
        distance_type const d = geometry::distance(p1, p2);
        state.length += d;

typename state_type::work_point weighted_median;
        geometry::assign_zero(weighted_median);
        geometry::add_point(weighted_median, p1);
        geometry::add_point(weighted_median, p2);
        geometry::multiply_value(weighted_median, d/2);
        geometry::add_point(state.average_sum, weighted_median);
    }

static inline bool result(state_type const& state, Point& centroid)
    {
        distance_type const zero = distance_type();
        if (! geometry::math::equals(state.length, zero)
            && boost::math::isfinite(state.length)) // Prevent NaN centroid coordinates
        {
            // NOTE: above distance_type is checked, not the centroid coordinate_type
            // which means that the centroid can still be filled with INF
            // if e.g. distance_type is double and centroid contains floats
            geometry::for_each_coordinate(centroid, set_sum_div_length(state));
            return true;
        }

return false;
    }

struct set_sum_div_length
    {
        state_type const& m_state;
        set_sum_div_length(state_type const& state)
            : m_state(state)
        {}
        template <typename Pt, std::size_t Dimension>
        void apply(Pt & centroid) const
        {
            typedef typename geometry::coordinate_type<Pt>::type coordinate_type;
            geometry::set<Dimension>(
                centroid,
                boost::numeric_cast<coordinate_type>(
                    geometry::get<Dimension>(m_state.average_sum) / m_state.length
                )
            );
        }
    };
};

#ifndef DOXYGEN_NO_STRATEGY_SPECIALIZATIONS

namespace services
{

// Register this strategy for linear geometries, in all dimensions

template <std::size_t N, typename Point, typename Geometry>
struct default_strategy
<
    cartesian_tag,
    linear_tag,
    N,
    Point,
    Geometry
>
{
    typedef weighted_length
        <
            Point,
            typename point_type<Geometry>::type
        > type;
};

} // namespace services

#endif // DOXYGEN_NO_STRATEGY_SPECIALIZATIONS

}} // namespace strategy::centroid

}} // namespace boost::geometry

#endif // BOOST_GEOMETRY_STRATEGIES_CARTESIAN_CENTROID_WEIGHTED_LENGTH_HPP

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