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// Boost.Geometry
// Unit Test
// Copyright (c) 2021 Barend Gehrels, Amsterdam, the Netherlands.
// 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)
#include <geometry_test_common.hpp>
#include <boost/geometry/algorithms/detail/overlay/get_ring.hpp>
#include <boost/geometry/algorithms/area.hpp>
#include <boost/geometry/algorithms/is_valid.hpp>
#include <boost/geometry/strategies/strategies.hpp>
#include <boost/geometry/geometries/geometries.hpp>
#include <boost/geometry/io/wkt/wkt.hpp>
namespace
{
bool g_debug = false;
std::string const simplex = "POLYGON((0 2,1 2,1 1,0 1,0 2))";
std::string const case_a = "POLYGON((1 0,0 5,5 2,1 0),(2 1,3 2,1 3,2 1))";
std::string const multi = "MULTIPOLYGON(((0 0,0 5,5 5,5 0,0 0),(1 1,2 1,2 2,1 2,1 1),(3 3,4 3,4 4,3 4,3 3)),((6 6,6 10,10 10,10 6,6 6),(7 7,8 7,8 8,7 7)))";
}
template <typename Geometry>
void test_get_ring(std::string const& case_id, std::string const& wkt,
bg::ring_identifier const& ring_id,
std::string const& expected_wkt)
{
using tag = typename bg::tag<Geometry>::type;
Geometry geometry;
bg::read_wkt(wkt, geometry);
auto const ring = bg::detail::overlay::get_ring<tag>::apply(ring_id, geometry);
if (g_debug)
{
std::cout << case_id
<< " valid: " << bg::is_valid(geometry)
<< " area: " << bg::area(geometry)
<< " area(ring): " << bg::area(ring)
<< " wkt(ring): " << bg::wkt(ring)
<< std::endl;
}
std::ostringstream out;
out << bg::wkt(ring);
std::string const detected = out.str();
BOOST_CHECK_MESSAGE(detected == expected_wkt, "get_ring: " << case_id
<< " expected: " << expected_wkt
<< " detected: " << detected);
}
template <typename Geometry>
void test_segment_count_on_ring(std::string const& case_id, std::string const& wkt,
bg::ring_identifier const& ring_id, bg::signed_size_type expected_count)
{
Geometry geometry;
bg::read_wkt(wkt, geometry);
auto const detected_count = bg::detail::overlay::segment_count_on_ring(geometry, ring_id);
BOOST_CHECK_MESSAGE(detected_count == expected_count,
"test_get_ring: " << case_id
<< " expected: " << expected_count
<< " detected: " << detected_count);
}
template <typename Geometry>
void test_segment_distance(std::string const& case_id, int line, std::string const& wkt,
bg::segment_identifier const& id1,
bg::segment_identifier const& id2,
bg::signed_size_type expected_distance)
{
Geometry geometry;
bg::read_wkt(wkt, geometry);
auto const detected_distance = bg::detail::overlay::segment_distance(geometry, id1, id2);
BOOST_CHECK_MESSAGE(detected_distance == expected_distance,
"segment_distance: " << case_id << " (" << line << ")"
<< " expected: " << expected_distance
<< " detected: " << detected_distance);
}
template <typename Point, bool Closed>
void test_get_ring()
{
using ring = bg::model::ring<Point, Closed>;
using polygon = bg::model::polygon<Point, Closed>;
using multi_polygon = bg::model::multi_polygon<polygon>;
test_get_ring<ring>("ring_simplex", simplex, {0, -1, -1}, simplex);
test_get_ring<polygon>("polygon_simplex", simplex, {0, -1, -1}, simplex);
test_get_ring<polygon>("case_a_outer", case_a, {0, -1, -1}, "POLYGON((1 0,0 5,5 2,1 0))");
test_get_ring<polygon>("case_a_0", case_a, {0, -1, 0}, "POLYGON((2 1,3 2,1 3,2 1))");
test_get_ring<multi_polygon>("multi_0_outer", multi, {0, 0, -1}, "POLYGON((0 0,0 5,5 5,5 0,0 0))");
test_get_ring<multi_polygon>("multi_0_0", multi, {0, 0, 0}, "POLYGON((1 1,2 1,2 2,1 2,1 1))");
test_get_ring<multi_polygon>("multi_0_1", multi, {0, 0, 1}, "POLYGON((3 3,4 3,4 4,3 4,3 3))");
test_get_ring<multi_polygon>("multi_1_outer", multi, {0, 1, -1}, "POLYGON((6 6,6 10,10 10,10 6,6 6))");
test_get_ring<multi_polygon>("multi_1_1", multi, {0, 1, 0}, "POLYGON((7 7,8 7,8 8,7 7))");
}
template <typename Point, bool Closed>
void test_segment_count_on_ring()
{
using ring = bg::model::ring<Point, true, Closed>;
using polygon = bg::model::polygon<Point, true, Closed>;
using multi_polygon = bg::model::multi_polygon<polygon>;
test_segment_count_on_ring<ring>("ring_simplex", simplex, {0, -1, -1}, 4);
test_segment_count_on_ring<polygon>("polygon_simplex", simplex, {0, -1, -1}, 4);
test_segment_count_on_ring<polygon>("case_a_outer", case_a, {0, -1, -1}, 3);
test_segment_count_on_ring<polygon>("case_a_0", case_a, {0, -1, 0}, 3);
test_segment_count_on_ring<multi_polygon>("multi_0_outer", multi, {0, 0, -1}, 4);
test_segment_count_on_ring<multi_polygon>("multi_0_0", multi, {0, 0, 0}, 4);
test_segment_count_on_ring<multi_polygon>("multi_0_1", multi, {0, 0, 1}, 4);
test_segment_count_on_ring<multi_polygon>("multi_1_outer", multi, {0, 1, -1}, 4);
test_segment_count_on_ring<multi_polygon>("multi_1_1", multi, {0, 1, 0}, 3);
}
template <typename Point, bool Closed>
void test_segment_distance()
{
using ring = bg::model::ring<Point, true, Closed>;
std::string const case_id = "ring_simplex";
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 0}, {0, -1, -1, 0}, 0);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 0}, {0, -1, -1, 1}, 1);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 0}, {0, -1, -1, 2}, 2);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 0}, {0, -1, -1, 3}, 3);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 1}, {0, -1, -1, 0}, 3);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 1}, {0, -1, -1, 1}, 0);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 1}, {0, -1, -1, 2}, 1);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 1}, {0, -1, -1, 3}, 2);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 2}, {0, -1, -1, 0}, 2);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 2}, {0, -1, -1, 1}, 3);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 2}, {0, -1, -1, 2}, 0);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 2}, {0, -1, -1, 3}, 1);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 3}, {0, -1, -1, 0}, 1);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 3}, {0, -1, -1, 1}, 2);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 3}, {0, -1, -1, 2}, 3);
test_segment_distance<ring>(case_id, __LINE__, simplex, {0, -1, -1, 3}, {0, -1, -1, 3}, 0);
}
int test_main(int, char* [])
{
using point = bg::model::point<default_test_type, 2, bg::cs::cartesian>;
test_get_ring<point, true>();
test_segment_count_on_ring<point, true>();
test_segment_count_on_ring<point, false>();
test_segment_distance<point, true>();
test_segment_distance<point, false>();
return 0;
}
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