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65 lines
3.1 KiB
C++
65 lines
3.1 KiB
C++
// Boost.Geometry
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// Unit Test
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// Copyright (c) 2018-2019 Barend Gehrels, Amsterdam, the Netherlands.
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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_buffer_geo.hpp"
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static std::string const simplex = "POINT(4.9 52.0)";
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template <typename Formula, bool Clockwise, typename PointType>
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void test_point()
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{
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using polygon = bg::model::polygon<PointType, Clockwise>;
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// Test with a high tolerance to account for possible differences in andoyer/thomas.
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auto make_settings = [](int points_per_circle)
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{
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ut_settings result;
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result.tolerance = 0.5;
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result.points_per_circle = points_per_circle;
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return result;
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};
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// Test with a high tolerance to account for possible differences in andoyer/thomas.
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auto make_circle = [](int points_per_circle)
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{
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return bg::strategy::buffer::geographic_point_circle<Formula>(points_per_circle);
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};
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bg::strategies::buffer::geographic<Formula> strategy;
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bg::strategy::buffer::geographic_join_miter<Formula> join;
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bg::strategy::buffer::geographic_side_straight<Formula> side;
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bg::strategy::buffer::end_flat end;
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test_one_geo<PointType, polygon>("simplex_1_16", simplex, strategy, side, make_circle(360), join, end, 3.1415, 1.0, make_settings(360));
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test_one_geo<PointType, polygon>("simplex_5_8", simplex, strategy, side, make_circle(8), join, end, 70.7107, 5.0, make_settings(8));
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test_one_geo<PointType, polygon>("simplex_5_16", simplex, strategy, side, make_circle(16), join, end, 76.5437, 5.0, make_settings(16));
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test_one_geo<PointType, polygon>("simplex_5_32", simplex, strategy, side, make_circle(32), join, end, 77.9640, 5.0, make_settings(32));
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// The more points used for the buffer, the more the area approaches 10*PI square meters
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test_one_geo<PointType, polygon>("simplex_10_8", simplex, strategy, side, make_circle(8), join, end, 282.8430, 10.0, make_settings(8));
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test_one_geo<PointType, polygon>("simplex_10_16", simplex, strategy, side, make_circle(16), join, end, 306.1471, 10.0, make_settings(16));
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test_one_geo<PointType, polygon>("simplex_10_32", simplex, strategy, side, make_circle(32), join, end, 312.1450, 10.0, make_settings(32));
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test_one_geo<PointType, polygon>("simplex_10_180", simplex, strategy, side, make_circle(180), join, end, 313.9051, 10.0, make_settings(180));
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test_one_geo<PointType, polygon>("simplex_10_180", simplex, strategy, side, make_circle(360), join, end, 314.15, 10.0, make_settings(360));
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}
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int test_main(int, char* [])
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{
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BoostGeometryWriteTestConfiguration();
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test_point<bg::strategy::andoyer, true, bg::model::point<default_test_type, 2, bg::cs::geographic<bg::degree> > >();
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test_point<bg::strategy::thomas, true, bg::model::point<default_test_type, 2, bg::cs::geographic<bg::degree> > >();
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#if ! defined(BOOST_GEOMETRY_TEST_ONLY_ONE_TYPE)
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test_point<bg::strategy::andoyer, true, bg::model::point<long double, 2, bg::cs::geographic<bg::degree> > >();
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#endif
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return 0;
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}
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