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Diffstat (limited to 'boost/geometry/strategies/geographic/side_detail.hpp')
| -rw-r--r-- | boost/geometry/strategies/geographic/side_detail.hpp | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/boost/geometry/strategies/geographic/side_detail.hpp b/boost/geometry/strategies/geographic/side_detail.hpp deleted file mode 100644 index ce1b47c88e..0000000000 --- a/boost/geometry/strategies/geographic/side_detail.hpp +++ /dev/null @@ -1,139 +0,0 @@ -// Boost.Geometry - -// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. - -// This file was modified by Oracle on 2014, 2015, 2016. -// Modifications copyright (c) 2014-2016 Oracle and/or its affiliates. - -// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle - -// 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_GEOGRAPHIC_SIDE_DETAIL_HPP -#define BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_SIDE_DETAIL_HPP - -#include <boost/geometry/core/cs.hpp> -#include <boost/geometry/core/access.hpp> -#include <boost/geometry/core/radian_access.hpp> -#include <boost/geometry/core/radius.hpp> - -#include <boost/geometry/util/math.hpp> -#include <boost/geometry/util/promote_floating_point.hpp> -#include <boost/geometry/util/select_calculation_type.hpp> - -#include <boost/geometry/strategies/side.hpp> -//#include <boost/geometry/strategies/concepts/side_concept.hpp> - - -namespace boost { namespace geometry -{ - - -namespace strategy { namespace side -{ - -#ifndef DOXYGEN_NO_DETAIL -namespace detail -{ - -/*! -\brief Check at which side of a segment a point lies - left of segment (> 0), right of segment (< 0), on segment (0) -\ingroup strategies -\tparam InverseFormula Geodesic inverse solution formula. -\tparam Model Reference model of coordinate system. -\tparam CalculationType \tparam_calculation - */ -template <template<typename, bool, bool, bool, bool, bool> class InverseFormula, - typename Model, - typename CalculationType = void> -class by_azimuth -{ -public: - by_azimuth(Model const& model = Model()) - : m_model(model) - {} - - template <typename P1, typename P2, typename P> - inline int apply(P1 const& p1, P2 const& p2, P const& p) - { - typedef typename promote_floating_point - < - typename select_calculation_type_alt - < - CalculationType, - P1, P2, P - >::type - >::type calc_t; - - typedef InverseFormula<calc_t, false, true, false, false, false> inverse_formula; - - calc_t a1p = azimuth<calc_t, inverse_formula>(p1, p, m_model); - calc_t a12 = azimuth<calc_t, inverse_formula>(p1, p2, m_model); - - calc_t const pi = math::pi<calc_t>(); - - // instead of the formula from XTD - //calc_t a_diff = asin(sin(a1p - a12)); - - calc_t a_diff = a1p - a12; - // normalize, angle in [-pi, pi] - while ( a_diff > pi ) - a_diff -= calc_t(2) * pi; - while ( a_diff < -pi ) - a_diff += calc_t(2) * pi; - - // NOTE: in general it shouldn't be required to support the pi/-pi case - // because in non-cartesian systems it makes sense to check the side - // only "between" the endpoints. - // However currently the winding strategy calls the side strategy - // for vertical segments to check if the point is "between the endpoints. - // This could be avoided since the side strategy is not required for that - // because meridian is the shortest path. So a difference of - // longitudes would be sufficient (of course normalized to [-pi, pi]). - - // NOTE: with the above said, the pi/-pi check is temporary - // however in case if this was required - // the geodesics on ellipsoid aren't "symmetrical" - // therefore instead of comparing a_diff to pi and -pi - // one should probably use inverse azimuths and compare - // the difference to 0 as well - - // positive azimuth is on the right side - return math::equals(a_diff, 0) - || math::equals(a_diff, pi) - || math::equals(a_diff, -pi) ? 0 - : a_diff > 0 ? -1 // right - : 1; // left - } - -private: - template <typename ResultType, - typename InverseFormulaType, - typename Point1, - typename Point2, - typename ModelT> - static inline ResultType azimuth(Point1 const& point1, Point2 const& point2, ModelT const& model) - { - return InverseFormulaType::apply(get_as_radian<0>(point1), - get_as_radian<1>(point1), - get_as_radian<0>(point2), - get_as_radian<1>(point2), - model).azimuth; - } - - Model m_model; -}; - -} // detail -#endif // DOXYGEN_NO_DETAIL - -}} // namespace strategy::side - - -}} // namespace boost::geometry - - -#endif // BOOST_GEOMETRY_STRATEGIES_GEOGRAPHIC_SIDE_DETAIL_HPP |