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82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
// Boost.Geometry
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// Unit Test
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// Copyright (c) 2022 Barend Gehrels, Amsterdam, the Netherlands.
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// This file was modified by Oracle on 2024.
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// Modifications copyright (c) 2024 Oracle and/or its affiliates.
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// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <test_geometries/const_point.hpp>
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#include <boost/geometry/algorithms/detail/overlay/get_turns.hpp>
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#include <boost/geometry/strategies/default_strategy.hpp>
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#include <boost/geometry/strategies/relate/cartesian.hpp>
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#include <boost/geometry/geometries/helper_geometry.hpp>
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#include <geometry_test_common.hpp>
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template <typename Ring1, typename Ring2>
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void test_get_turns_on_const(Ring1 const &ring1, Ring2 const &ring2,
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const std::vector<const_point>& expectation)
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{
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namespace bg = boost::geometry;
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using strategy_type = typename bg::strategies::relate::services::default_strategy<Ring1, Ring2>::type;
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using point_type = typename bg::point_type<Ring1>::type;
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using writable_point_type = typename bg::helper_geometry<point_type>::type;
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using segment_ratio_type = typename bg::segment_ratio_type
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<
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writable_point_type
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>::type;
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using turn_info = bg::detail::overlay::turn_info
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<
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writable_point_type, segment_ratio_type
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>;
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std::vector<turn_info> turns;
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strategy_type strategy;
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bg::detail::get_turns::no_interrupt_policy policy;
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bg::get_turns
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<
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false, false, bg::detail::overlay::assign_null_policy
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>(ring1, ring2, strategy, turns, policy);
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BOOST_CHECK_EQUAL(turns.size(), expectation.size());
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const double tolerance = 0.001;
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for (std::size_t i = 0; i < turns.size() && i < expectation.size(); i++)
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{
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BOOST_CHECK_CLOSE(expectation[i].GetX(), bg::get<0>(turns[i].point), tolerance);
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BOOST_CHECK_CLOSE(expectation[i].GetY(), bg::get<1>(turns[i].point), tolerance);
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}
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << bg::wkt(ring1) << " " << bg::wkt(ring2) << std::endl;
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for (const auto& turn : turns)
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{
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std::cout << bg::wkt(turn.point) << std::endl;
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}
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#endif
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}
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int test_main(int, char* [])
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{
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// Construct two geometries with visually predictable intersections
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ring_of_const_point rectangle{{2, 2}, {2, 4}, {4, 4}, {4, 2}, {2, 2}};
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ring_of_const_point triangle{{1, 2}, {4, 5}, {5, 4}, {1, 2}};
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test_get_turns_on_const(rectangle, triangle, {{2, 3}, {2, 2.5}, {3, 4}, {4, 3.5}});
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return 0;
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}
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