391 lines
13 KiB
C++
391 lines
13 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Unit Test
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// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
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// This file was modified by Oracle on 2016, 2017.
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// Modifications copyright (c) 2016-2017, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, 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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#ifndef BOOST_GEOMETRY_TEST_INTERSECTION_HPP
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#define BOOST_GEOMETRY_TEST_INTERSECTION_HPP
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#include <fstream>
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#include <iomanip>
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#include <boost/foreach.hpp>
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#include <boost/variant/variant.hpp>
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#include <boost/geometry/algorithms/intersection.hpp>
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#include <boost/geometry/algorithms/area.hpp>
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#include <boost/geometry/algorithms/correct.hpp>
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#include <boost/geometry/algorithms/is_valid.hpp>
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#include <boost/geometry/algorithms/length.hpp>
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#include <boost/geometry/algorithms/num_points.hpp>
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#include <boost/geometry/algorithms/num_interior_rings.hpp>
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#include <boost/geometry/geometries/geometries.hpp>
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#include <boost/geometry/strategies/strategies.hpp>
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#include <boost/geometry/io/wkt/wkt.hpp>
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#if defined(TEST_WITH_SVG)
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# include <boost/geometry/io/svg/svg_mapper.hpp>
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#endif
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#include <geometry_test_common.hpp>
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#include <algorithms/check_validity.hpp>
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#include "../setop_output_type.hpp"
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struct ut_settings
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{
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double percentage;
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bool test_validity;
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bool debug;
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explicit ut_settings(double p = 0.0001, bool tv = true)
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: percentage(p)
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, test_validity(tv)
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, debug(false)
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{}
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};
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template<typename IntersectionOutput, typename G1, typename G2>
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void check_result(IntersectionOutput const& intersection_output,
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std::string const& caseid,
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G1 const& g1, G2 const& g2,
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std::size_t expected_count, std::size_t expected_holes_count,
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int expected_point_count, double expected_length_or_area,
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ut_settings const& settings)
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{
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typedef typename boost::range_value<IntersectionOutput>::type OutputType;
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bool const is_line = bg::geometry_id<OutputType>::type::value == 2;
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typename bg::default_area_result<G1>::type length_or_area = 0;
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int n = 0;
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std::size_t nholes = 0;
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for (typename IntersectionOutput::const_iterator it = intersection_output.begin();
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it != intersection_output.end();
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++it)
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{
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if (expected_point_count > 0)
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{
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// here n should rather be of type std::size_t, but expected_point_count
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// is set to -1 in some test cases so type int was left for now
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n += static_cast<int>(bg::num_points(*it, true));
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}
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if (expected_holes_count > 0)
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{
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nholes += bg::num_interior_rings(*it);
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}
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// instead of specialization we check it run-time here
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length_or_area += is_line
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? bg::length(*it)
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: bg::area(*it);
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if (settings.debug)
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{
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std::cout << std::setprecision(20) << bg::wkt(*it) << std::endl;
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}
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}
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#if ! defined(BOOST_GEOMETRY_TEST_ALWAYS_CHECK_VALIDITY)
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if (settings.test_validity)
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#endif
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{
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std::string message;
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bool const valid = check_validity<IntersectionOutput>
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::apply(intersection_output, caseid, g1, g2, message);
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BOOST_CHECK_MESSAGE(valid,
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"intersection: " << caseid << " not valid: " << message
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<< " type: " << (type_for_assert_message<G1, G2>()));
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}
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#if ! defined(BOOST_GEOMETRY_NO_BOOST_TEST)
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#if defined(BOOST_GEOMETRY_USE_RESCALING)
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// Without rescaling, point count might easily differ (which is no problem)
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if (expected_point_count > 0)
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{
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BOOST_CHECK_MESSAGE(bg::math::abs(n - expected_point_count) < 3,
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"intersection: " << caseid
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<< " #points expected: " << expected_point_count
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<< " detected: " << n
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<< " type: " << (type_for_assert_message<G1, G2>())
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);
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}
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#endif
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if (expected_count > 0)
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{
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BOOST_CHECK_MESSAGE(intersection_output.size() == expected_count,
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"intersection: " << caseid
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<< " #outputs expected: " << expected_count
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<< " detected: " << intersection_output.size()
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<< " type: " << (type_for_assert_message<G1, G2>())
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);
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}
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if (expected_holes_count > 0)
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{
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BOOST_CHECK_MESSAGE(nholes == expected_holes_count,
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"intersection: " << caseid
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<< " #holes expected: " << expected_holes_count
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<< " detected: " << nholes
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<< " type: " << (type_for_assert_message<G1, G2>())
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);
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}
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double const detected_length_or_area = boost::numeric_cast<double>(length_or_area);
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if (settings.percentage > 0.0)
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{
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if (expected_length_or_area > 0)
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{
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BOOST_CHECK_CLOSE(detected_length_or_area, expected_length_or_area, settings.percentage);
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}
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else
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{
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// Compare 0 with 0 or a very small detected area
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BOOST_CHECK_LE(detected_length_or_area, settings.percentage);
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}
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}
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else
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{
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// In some cases (geos_2) the intersection is either 0, or a tiny rectangle,
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// depending on compiler/settings. That cannot be tested by CLOSE
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BOOST_CHECK_LE(detected_length_or_area, expected_length_or_area);
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}
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#endif
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}
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template <typename OutputType, typename CalculationType, typename G1, typename G2>
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typename bg::default_area_result<G1>::type test_intersection(std::string const& caseid,
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G1 const& g1, G2 const& g2,
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std::size_t expected_count = 0, std::size_t expected_holes_count = 0,
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int expected_point_count = 0, double expected_length_or_area = 0,
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ut_settings const& settings = ut_settings())
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{
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if (settings.debug)
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{
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std::cout << std::endl << "case " << caseid << std::endl;
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}
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typedef typename setop_output_type<OutputType>::type result_type;
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typedef typename bg::point_type<G1>::type point_type;
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boost::ignore_unused<point_type>();
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#if ! defined(BOOST_GEOMETRY_TEST_ONLY_ONE_TYPE)
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if (! settings.debug)
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{
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// Check _inserter behaviour with stratey
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typedef typename bg::strategy::intersection::services::default_strategy
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<
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typename bg::cs_tag<point_type>::type
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>::type strategy_type;
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result_type clip;
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bg::detail::intersection::intersection_insert<OutputType>(g1, g2, std::back_inserter(clip), strategy_type());
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}
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#endif
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typename bg::default_area_result<G1>::type length_or_area = 0;
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// Check normal behaviour
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result_type intersection_output;
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bg::intersection(g1, g2, intersection_output);
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check_result(intersection_output, caseid, g1, g2, expected_count,
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expected_holes_count, expected_point_count, expected_length_or_area,
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settings);
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#if ! defined(BOOST_GEOMETRY_TEST_ONLY_ONE_TYPE)
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// Check variant behaviour
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intersection_output.clear();
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bg::intersection(boost::variant<G1>(g1), g2, intersection_output);
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check_result(intersection_output, caseid, g1, g2, expected_count,
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expected_holes_count, expected_point_count, expected_length_or_area,
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settings);
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intersection_output.clear();
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bg::intersection(g1, boost::variant<G2>(g2), intersection_output);
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check_result(intersection_output, caseid, g1, g2, expected_count,
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expected_holes_count, expected_point_count, expected_length_or_area,
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settings);
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intersection_output.clear();
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bg::intersection(boost::variant<G1>(g1), boost::variant<G2>(g2), intersection_output);
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check_result(intersection_output, caseid, g1, g2, expected_count,
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expected_holes_count, expected_point_count, expected_length_or_area,
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settings);
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#endif
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#if defined(TEST_WITH_SVG)
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{
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bool const is_line = bg::geometry_id<OutputType>::type::value == 2;
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typedef typename bg::coordinate_type<G1>::type coordinate_type;
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bool const ccw =
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bg::point_order<G1>::value == bg::counterclockwise
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|| bg::point_order<G2>::value == bg::counterclockwise;
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bool const open =
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bg::closure<G1>::value == bg::open
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|| bg::closure<G2>::value == bg::open;
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std::ostringstream filename;
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filename << "intersection_"
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<< caseid << "_"
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<< string_from_type<coordinate_type>::name()
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<< string_from_type<CalculationType>::name()
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<< (ccw ? "_ccw" : "")
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<< (open ? "_open" : "")
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#if defined(BOOST_GEOMETRY_USE_RESCALING)
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<< "_rescaled"
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#endif
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<< ".svg";
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std::ofstream svg(filename.str().c_str());
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bg::svg_mapper<point_type> mapper(svg, 500, 500);
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mapper.add(g1);
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mapper.add(g2);
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mapper.map(g1, is_line
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? "opacity:0.6;stroke:rgb(0,255,0);stroke-width:5"
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: "fill-opacity:0.5;fill:rgb(153,204,0);"
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"stroke:rgb(153,204,0);stroke-width:3");
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mapper.map(g2, "fill-opacity:0.3;fill:rgb(51,51,153);"
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"stroke:rgb(51,51,153);stroke-width:3");
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for (typename result_type::const_iterator it = intersection_output.begin();
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it != intersection_output.end(); ++it)
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{
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mapper.map(*it, "fill-opacity:0.2;stroke-opacity:0.4;fill:rgb(255,0,0);"
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"stroke:rgb(255,0,255);stroke-width:8");
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}
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}
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#endif
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if (settings.debug)
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{
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std::cout << "end case " << caseid << std::endl;
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}
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return length_or_area;
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}
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template <typename OutputType, typename CalculationType, typename G1, typename G2>
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typename bg::default_area_result<G1>::type test_intersection(std::string const& caseid,
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G1 const& g1, G2 const& g2,
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std::size_t expected_count = 0, int expected_point_count = 0,
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double expected_length_or_area = 0,
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ut_settings const& settings = ut_settings())
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{
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return test_intersection<OutputType, CalculationType>(
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caseid, g1, g2, expected_count, 0, expected_point_count,
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expected_length_or_area, settings
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);
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}
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template <typename OutputType, typename G1, typename G2>
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typename bg::default_area_result<G1>::type test_one(std::string const& caseid,
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std::string const& wkt1, std::string const& wkt2,
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std::size_t expected_count = 0, std::size_t expected_holes_count = 0,
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int expected_point_count = 0, double expected_length_or_area = 0,
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ut_settings const& settings = ut_settings())
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{
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G1 g1;
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bg::read_wkt(wkt1, g1);
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G2 g2;
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bg::read_wkt(wkt2, g2);
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// Reverse if necessary
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bg::correct(g1);
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bg::correct(g2);
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return test_intersection<OutputType, void>(caseid, g1, g2,
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expected_count, expected_holes_count, expected_point_count,
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expected_length_or_area, settings);
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}
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template <typename OutputType, typename G1, typename G2>
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typename bg::default_area_result<G1>::type test_one(std::string const& caseid,
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std::string const& wkt1, std::string const& wkt2,
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std::size_t expected_count = 0, int expected_point_count = 0,
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double expected_length_or_area = 0,
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ut_settings const& settings = ut_settings())
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{
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return test_one<OutputType, G1, G2>(caseid, wkt1, wkt2,
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expected_count, 0, expected_point_count,
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expected_length_or_area,
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settings);
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}
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template <typename OutputType, typename Areal, typename Linear>
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void test_one_lp(std::string const& caseid,
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std::string const& wkt_areal, std::string const& wkt_linear,
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std::size_t expected_count = 0, int expected_point_count = 0,
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double expected_length = 0,
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ut_settings const& settings = ut_settings())
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << caseid << " -- start" << std::endl;
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#endif
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Areal areal;
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bg::read_wkt(wkt_areal, areal);
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bg::correct(areal);
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Linear linear;
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bg::read_wkt(wkt_linear, linear);
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test_intersection<OutputType, void>(caseid, areal, linear,
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expected_count, expected_point_count,
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expected_length, settings);
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// A linestring reversed should deliver exactly the same.
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bg::reverse(linear);
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test_intersection<OutputType, void>(caseid + "_rev", areal, linear,
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expected_count, expected_point_count,
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expected_length, settings);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << caseid << " -- end" << std::endl;
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#endif
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}
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template <typename Geometry1, typename Geometry2>
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void test_point_output(std::string const& wkt1, std::string const& wkt2, unsigned int expected_count)
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{
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Geometry1 g1;
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bg::read_wkt(wkt1, g1);
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bg::correct(g1);
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Geometry2 g2;
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bg::read_wkt(wkt2, g2);
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bg::correct(g2);
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bg::model::multi_point<typename bg::point_type<Geometry1>::type> points;
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bg::intersection(g1, g2, points);
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BOOST_CHECK_EQUAL(points.size(), expected_count);
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}
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#endif
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