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93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library) test file
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//
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// Copyright Barend Gehrels 2007-2009, Geodan, 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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#ifndef BOOST_GEOMETRY_TEST_CENTROID_HPP
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#define BOOST_GEOMETRY_TEST_CENTROID_HPP
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// Test-functionality, shared between single and multi tests
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#include <geometry_test_common.hpp>
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#include <boost/geometry/strategies/strategies.hpp>
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#include <boost/geometry/algorithms/centroid.hpp>
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#include <boost/geometry/algorithms/distance.hpp>
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#include <boost/geometry/domains/gis/io/wkt/read_wkt.hpp>
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template<std::size_t D>
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struct check_result
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{
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};
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template <>
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struct check_result<2>
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{
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template <typename Point, typename T>
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static void apply(Point const& p, T const& x, T const& y, T const&)
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{
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BOOST_CHECK_CLOSE(bg::get<0>(p), x, 0.001);
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BOOST_CHECK_CLOSE(bg::get<1>(p), y, 0.001);
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}
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};
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template <>
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struct check_result<3>
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{
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template <typename Point, typename T>
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static void apply(Point const& p, T const& x, T const& y, T const& z)
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{
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BOOST_CHECK_CLOSE(bg::get<0>(p), x, 0.001);
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BOOST_CHECK_CLOSE(bg::get<1>(p), y, 0.001);
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BOOST_CHECK_CLOSE(bg::get<2>(p), z, 0.001);
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}
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};
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template <typename CalculationType, typename Geometry, typename Point>
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void test_with_other_calculation_type(Geometry const& geometry, Point& c1)
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{
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typedef typename bg::point_type<Geometry>::type point_type;
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// Calculate it with user defined strategy
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point_type c2;
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bg::centroid(geometry, c2,
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bg::strategy::centroid::bashein_detmer<point_type, point_type, CalculationType>());
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std::cout << typeid(CalculationType).name() << ": " << std::setprecision(20)
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<< bg::get<0>(c2) << " " << bg::get<1>(c2)
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<< " -> difference: " << bg::distance(c1, c2)
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<< std::endl;
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}
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template <typename Geometry, typename T>
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void test_centroid(std::string const& wkt, T const& x, T const& y, T const& z = T())
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{
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Geometry geometry;
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bg::read_wkt(wkt, geometry);
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typedef typename bg::point_type<Geometry>::type point_type;
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point_type c1;
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bg::centroid(geometry, c1);
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check_result<bg::dimension<Geometry>::type::value>::apply(c1, x, y, z);
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#ifdef REPORT_RESULTS
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std::cout << "normal: " << std::setprecision(20) << bg::get<0>(c1) << " " << bg::get<1>(c1) << std::endl;
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//test_with_other_calculation_type<long long>(geometry, c1);
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test_with_other_calculation_type<float>(geometry, c1);
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test_with_other_calculation_type<long double>(geometry, c1);
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#if defined(HAVE_TTMATH)
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test_with_other_calculation_type<ttmath_big>(geometry, c1);
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#endif
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#endif
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}
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#endif
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