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758 lines (632 loc) · 23.1 KB
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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Unit Test
// Copyright (c) 2017 Adam Wulkiewicz, Lodz, Poland.
// Copyright (c) 2014-2021, Oracle and/or its affiliates.
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_TEST_MODULE
#define BOOST_TEST_MODULE test_segment_iterator
#endif
#include <algorithm>
#include <iostream>
#include <iterator>
#include <string>
#include <vector>
#include <boost/test/included/unit_test.hpp>
#include <boost/concept_check.hpp>
#include <boost/core/ignore_unused.hpp>
#include <boost/iterator/iterator_concepts.hpp>
#include <boost/tuple/tuple.hpp>
#include <boost/geometry/algorithms/convert.hpp>
#include <boost/geometry/algorithms/equals.hpp>
#include <boost/geometry/algorithms/num_segments.hpp>
#include <boost/geometry/core/closure.hpp>
#include <boost/geometry/geometries/geometries.hpp>
#include <boost/geometry/geometries/adapted/boost_tuple.hpp>
#include <boost/geometry/geometries/register/linestring.hpp>
#include <boost/geometry/geometries/register/multi_linestring.hpp>
#include <boost/geometry/io/wkt/wkt.hpp>
#include <boost/geometry/io/dsv/write.hpp>
#include <boost/geometry/iterators/segment_iterator.hpp>
#include <boost/geometry/policies/compare.hpp>
#include <test_common/with_pointer.hpp>
#include <test_geometries/copy_on_dereference_geometries.hpp>
namespace bg = ::boost::geometry;
namespace bgm = bg::model;
typedef bgm::point<double, 2, bg::cs::cartesian> point_type;
typedef bgm::linestring<point_type> linestring_type;
typedef bgm::ring<point_type, true, true> ring_cw_closed_type;
typedef bgm::ring<point_type, true, false> ring_cw_open_type;
typedef bgm::polygon<point_type, true, true> polygon_cw_closed_type;
typedef bgm::polygon<point_type, true, false> polygon_cw_open_type;
// multi-geometries
typedef bgm::multi_linestring<linestring_type> multi_linestring_type;
typedef bgm::multi_polygon<polygon_cw_closed_type> multi_polygon_cw_closed_type;
typedef bgm::multi_polygon<polygon_cw_open_type> multi_polygon_cw_open_type;
// tuple-based geometries
typedef boost::tuple<double, double> tuple_point_type;
typedef std::vector<tuple_point_type> tuple_linestring_type;
typedef std::vector<tuple_linestring_type> tuple_multi_linestring_type;
BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian)
BOOST_GEOMETRY_REGISTER_LINESTRING(tuple_linestring_type)
BOOST_GEOMETRY_REGISTER_MULTI_LINESTRING(tuple_multi_linestring_type)
BOOST_GEOMETRY_REGISTER_LINESTRING_TEMPLATED(std::vector)
template <typename Geometry>
inline Geometry from_wkt(std::string const& wkt)
{
Geometry geometry;
bg::read_wkt(wkt, geometry);
return geometry;
}
template <typename Iterator>
inline std::ostream& print_geometry_range(std::ostream& os,
Iterator first,
Iterator beyond,
std::string const& header)
{
os << header << "(";
for (Iterator it = first; it != beyond; ++it)
{
os << " " << bg::dsv(*it);
}
os << " )";
return os;
}
template <typename Geometry>
struct test_iterator_concepts
{
typedef bg::segment_iterator<Geometry> iterator;
BOOST_CONCEPT_ASSERT(( boost::BidirectionalIteratorConcept<iterator> ));
BOOST_CONCEPT_ASSERT(( boost_concepts::ReadableIteratorConcept<iterator> ));
BOOST_CONCEPT_ASSERT
(( boost_concepts::BidirectionalTraversalConcept<iterator> ));
};
struct equals
{
template <typename Iterator>
static inline std::size_t number_of_elements(Iterator begin,
Iterator end)
{
std::size_t size = std::distance(begin, end);
std::size_t num_elems(0);
for (Iterator it = begin; it != end; ++it)
{
++num_elems;
}
BOOST_CHECK(size == num_elems);
num_elems = 0;
for (Iterator it = end; it != begin; --it)
{
++num_elems;
}
BOOST_CHECK(size == num_elems);
return num_elems;
}
template <typename Iterator1, typename Iterator2>
static inline bool apply(Iterator1 begin1, Iterator1 end1,
Iterator2 begin2, Iterator2 end2)
{
std::size_t num_points1 = number_of_elements(begin1, end1);
std::size_t num_points2 = number_of_elements(begin2, end2);
if (num_points1 != num_points2)
{
return false;
}
Iterator1 it1 = begin1;
Iterator2 it2 = begin2;
for (; it1 != end1; ++it1, ++it2)
{
if (! bg::equals(*it1, *it2))
{
return false;
}
}
return true;
}
};
template <typename Geometry, typename SegmentRange>
struct test_segment_iterator_of_geometry
{
template <typename G>
static inline void base_test(G const& geometry,
SegmentRange const& segment_range,
std::string const& header,
bool check_num_segments)
{
boost::ignore_unused(header);
typedef bg::segment_iterator<G const> segment_iterator;
test_iterator_concepts<G const>();
segment_iterator begin = bg::segments_begin(geometry);
segment_iterator end = bg::segments_end(geometry);
if (check_num_segments)
{
BOOST_CHECK(std::size_t(std::distance(begin, end))
==
bg::num_segments(geometry));
}
BOOST_CHECK(equals::apply(begin, end,
bg::segments_begin(segment_range),
bg::segments_end(segment_range))
);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::string closure
= (
(bg::closure<Geometry>::value == bg::closed)
? "closed"
: "open"
);
std::cout << header << " geometry (WKT): "
<< bg::wkt(geometry) << std::endl;
std::cout << header << " geometry (DSV): "
<< bg::dsv(geometry) << std::endl;
std::cout << "geometry's closure: " << closure << std::endl;
print_geometry_range(std::cout, begin, end, "segment range: ");
std::cout << std::endl;
print_geometry_range(std::cout,
bg::segments_begin(segment_range),
bg::segments_end(segment_range),
"expected segment range: ");
std::cout << std::endl;
#endif
// testing dereferencing
typedef typename std::iterator_traits
<
segment_iterator
>::value_type value_type;
if (bg::segments_begin(geometry) != bg::segments_end(geometry))
{
value_type first_segment = *bg::segments_begin(geometry);
boost::ignore_unused(first_segment);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
typedef bg::model::segment
<
bg::model::point<double, 2, bg::cs::cartesian>
> other_segment;
other_segment other_seg;
// convert is used as a workaround for geometries whose
// point is a pointer. WKT does not seem to work for
// segment iterators created this way.
bg::convert(first_segment, other_seg);
std::cout << "first segment in geometry: "
<< bg::wkt(other_seg)
<< std::endl;
std::cout << "first segment in geometry (DSV): "
<< bg::dsv(first_segment)
<< std::endl;
std::cout << std::endl << std::endl;
#endif
}
// test copying all segments to a vector
std::vector<value_type> segments;
std::copy(bg::segments_begin(geometry),
bg::segments_end(geometry),
std::back_inserter(segments));
BOOST_CHECK(std::size_t( std::distance(bg::segments_begin(geometry),
bg::segments_end(geometry)) )
==
segments.size());
}
static inline void apply(Geometry geometry,
SegmentRange const& segment_range,
bool check_num_segments = true)
{
base_test<Geometry>(geometry, segment_range, "const",
check_num_segments);
}
};
//======================================================================
//======================================================================
template <typename ClosedGeometry, typename ExpectedResult>
struct dual_tester
{
template <typename OpenGeometry>
static inline void apply(OpenGeometry const& open_g,
ExpectedResult expected,
bool check_num_segments = true)
{
typedef test_segment_iterator_of_geometry
<
OpenGeometry, ExpectedResult
> otester;
typedef test_segment_iterator_of_geometry
<
ClosedGeometry, ExpectedResult
> ctester;
otester::apply(open_g, expected, check_num_segments);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << std::endl << std::endl;
#endif
ClosedGeometry closed_g;
bg::convert(open_g, closed_g);
ctester::apply(closed_g, expected, check_num_segments);
}
};
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_linestring_segment_iterator )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** LINESTRING ***" << std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef linestring_type G;
typedef test_segment_iterator_of_geometry<G, TML> tester;
tester::apply(from_wkt<G>("LINESTRING(0 0,1 1,2 2,3 3,4 4)"),
TML{
{{0,0},{1,1}},
{{1,1},{2,2}},
{{2,2},{3,3}},
{{3,3},{4,4}}
});
// linestring with no points
tester::apply(from_wkt<G>("LINESTRING()"),
TML()
);
// linestring with a single point
tester::apply(from_wkt<G>("LINESTRING(1 0)"),
TML{
{{1,0},{1,0}}
},
false
);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << std::endl << std::endl << std::endl;
#endif
}
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_ring_segment_iterator )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** RING ***" << std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef ring_cw_open_type OG;
typedef ring_cw_closed_type CG;
typedef dual_tester<CG, TML> tester;
tester::apply(from_wkt<OG>("POLYGON((0 0,0 10,10 10,10 0))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}}
});
// open ring with no points
tester::apply(from_wkt<OG>("POLYGON(())"),
TML()
);
// open ring with a single point (one segment)
tester::apply(from_wkt<OG>("POLYGON((0 0))"),
TML{
{{0,0},{0,0}}
},
false
);
// open ring with a two points (two segments)
tester::apply(from_wkt<OG>("POLYGON((0 0,0 10))"),
TML{
{{0,0},{0,10}},
{{0,10},{0,0}}
});
// open ring with a three points (three segments)
tester::apply(from_wkt<OG>("POLYGON((0 0,0 10,10 10))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{0,0}}
});
tester::apply(from_wkt<CG>("POLYGON((0 0,0 10,10 10,10 0,0 0))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}}
});
// closed ring with no points
tester::apply(from_wkt<CG>("POLYGON(())"),
TML()
);
// closed ring with a single point (one segment)
tester::apply(from_wkt<CG>("POLYGON((0 0))"),
TML{
{{0,0},{0,0}}
},
false
);
// closed ring with two points (one segment)
tester::apply(from_wkt<CG>("POLYGON((0 0,0 0))"),
TML{
{{0,0},{0,0}}
});
// closed ring with three points (two segments)
tester::apply(from_wkt<CG>("POLYGON((0 0,0 10,0 0))"),
TML{
{{0,0},{0,10}},
{{0,10},{0,0}}
});
// closed ring with four points (three segments)
tester::apply(from_wkt<CG>("POLYGON((0 0,0 10,10 10,0 0))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{0,0}}
});
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << std::endl << std::endl << std::endl;
#endif
}
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_polygon_segment_iterator )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** POLYGON ***" << std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef polygon_cw_open_type OG;
typedef polygon_cw_closed_type CG;
typedef dual_tester<CG, TML> tester;
tester::apply(from_wkt<OG>("POLYGON((0 0,0 10,10 10,10 0),(1 1,9 1,9 9,1 9))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}},
{{1,1},{9,1}},
{{9,1},{9,9}},
{{9,9},{1,9}},
{{1,9},{1,1}}
});
// open polygon with no points
tester::apply(from_wkt<OG>("POLYGON(())"),
TML()
);
// open polygons with single-point rings
tester::apply(from_wkt<OG>("POLYGON((0 0,0 10,10 10,10 0),(1 1))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}},
{{1,1},{1,1}}
},
false
);
tester::apply(from_wkt<OG>("POLYGON((0 0),(1 1,9 1,9 9,1 9))"),
TML{
{{0,0},{0,0}},
{{1,1},{9,1}},
{{9,1},{9,9}},
{{9,9},{1,9}},
{{1,9},{1,1}}
},
false
);
tester::apply(from_wkt<CG>("POLYGON((0 0,0 10,10 10,10 0,0 0),(1 1,9 1,9 9,1 9,1 1))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}},
{{1,1},{9,1}},
{{9,1},{9,9}},
{{9,9},{1,9}},
{{1,9},{1,1}}
});
// closed polygons with no points
tester::apply(from_wkt<CG>("POLYGON(())"),
TML()
);
tester::apply(from_wkt<CG>("POLYGON((),())"),
TML()
);
tester::apply(from_wkt<CG>("POLYGON((),(),())"),
TML()
);
// closed polygons with single-point rings
tester::apply(from_wkt<CG>("POLYGON((0 0,0 10,10 10,10 0,0 0),(1 1))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}},
{{1,1},{1,1}},
},
false
);
tester::apply(from_wkt<CG>("POLYGON((0 0),(1 1,9 1,9 9,1 9,1 1))"),
TML{
{{0,0},{0,0}},
{{1,1},{9,1}},
{{9,1},{9,9}},
{{9,9},{1,9}},
{{1,9},{1,1}}
},
false
);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << std::endl << std::endl << std::endl;
#endif
}
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_multi_linestring_segment_iterator )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** MULTILINESTRING ***" << std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef multi_linestring_type G;
typedef test_segment_iterator_of_geometry<G, TML> tester;
tester::apply(from_wkt<G>("MULTILINESTRING((0 0,1 1,2 2,3 3,4 4),(5 5,6 6,7 7,8 8),(9 9,10 10))"),
TML{
{{0,0},{1,1}},
{{1,1},{2,2}},
{{2,2},{3,3}},
{{3,3},{4,4}},
{{5,5},{6,6}},
{{6,6},{7,7}},
{{7,7},{8,8}},
{{9,9},{10,10}}
});
// empty multi-linestrings
tester::apply(from_wkt<G>("MULTILINESTRING()"),
TML()
);
tester::apply(from_wkt<G>("MULTILINESTRING(())"),
TML()
);
tester::apply(from_wkt<G>("MULTILINESTRING((),())"),
TML()
);
// multi-linestring with a linestring with one point
tester::apply(from_wkt<G>("MULTILINESTRING((0 0,1 1,2 2,3 3,4 4),(5 5),(9 9,10 10))"),
TML{
{{0,0},{1,1}},
{{1,1},{2,2}},
{{2,2},{3,3}},
{{3,3},{4,4}},
{{5,5},{5,5}},
{{9,9},{10,10}}
},
false
);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << std::endl << std::endl << std::endl;
#endif
}
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_multi_polygon_segment_iterator )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** MULTIPOLYGON ***" << std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef multi_polygon_cw_open_type OG;
typedef multi_polygon_cw_closed_type CG;
typedef dual_tester<CG, TML> tester;
tester::apply(from_wkt<OG>("MULTIPOLYGON(((0 0,0 10,10 10,10 0),(1 1,9 1,9 9,1 9)),((20 0,20 10,30 10,30 0),(21 1,29 1,29 9,21 9)))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}},
{{1,1},{9,1}},
{{9,1},{9,9}},
{{9,9},{1,9}},
{{1,9},{1,1}},
{{20,0},{20,10}},
{{20,10},{30,10}},
{{30,10},{30,0}},
{{30,0},{20,0}},
{{21,1},{29,1}},
{{29,1},{29,9}},
{{29,9},{21,9}},
{{21,9},{21,1}}
});
tester::apply(from_wkt<CG>("MULTIPOLYGON(((0 0,0 10,10 10,10 0,0 0),(1 1,9 1,9 9,1 9,1 1)),((20 0,20 10,30 10,30 0,20 0),(21 1,29 1,29 9,21 9,21 1)))"),
TML{
{{0,0},{0,10}},
{{0,10},{10,10}},
{{10,10},{10,0}},
{{10,0},{0,0}},
{{1,1},{9,1}},
{{9,1},{9,9}},
{{9,9},{1,9}},
{{1,9},{1,1}},
{{20,0},{20,10}},
{{20,10},{30,10}},
{{30,10},{30,0}},
{{30,0},{20,0}},
{{21,1},{29,1}},
{{29,1},{29,9}},
{{29,9},{21,9}},
{{21,9},{21,1}}
});
// test empty closed multi-polygons
tester::apply(from_wkt<CG>("MULTIPOLYGON()"),
TML()
);
tester::apply(from_wkt<CG>("MULTIPOLYGON((()))"),
TML()
);
tester::apply(from_wkt<CG>("MULTIPOLYGON(((),()))"),
TML()
);
tester::apply(from_wkt<CG>("MULTIPOLYGON(((),(),()))"),
TML()
);
tester::apply(from_wkt<CG>("MULTIPOLYGON(((),(),()),(()))"),
TML()
);
tester::apply(from_wkt<CG>("MULTIPOLYGON(((),(),()),((),()))"),
TML()
);
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << std::endl << std::endl << std::endl;
#endif
}
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_linestring_of_point_pointers )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** LINESTRING OF POINT POINTERS ***" << std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef std::vector<test::test_point_xy*> L;
std::vector<test::test_point_xy*> linestring;
for (int i = 1; i < 10; i++)
{
test::test_point_xy* p = new test::test_point_xy;
p->x = i;
p->y = -i;
linestring.push_back(p);
}
test::test_point_xy* zero = new test::test_point_xy;
zero->x = 0;
zero->y = 0;
delete zero;
typedef test_segment_iterator_of_geometry<L, TML> tester;
tester::apply(linestring,
TML{
{{1,-1},{2,-2}},
{{2,-2},{3,-3}},
{{3,-3},{4,-4}},
{{4,-4},{5,-5}},
{{5,-5},{6,-6}},
{{6,-6},{7,-7}},
{{7,-7},{8,-8}},
{{8,-8},{9,-9}}
});
for (unsigned int i = 0; i < linestring.size(); i++)
{
delete linestring[i];
}
}
//======================================================================
//======================================================================
BOOST_AUTO_TEST_CASE( test_linestring_copy_on_dereference )
{
#ifdef BOOST_GEOMETRY_TEST_DEBUG
std::cout << "*** LINESTRING WITH COPY-ON-DEREFERENCE ITERATOR ***"
<< std::endl;
#endif
typedef tuple_multi_linestring_type TML;
typedef linestring_copy_on_dereference<point_type> L;
typedef test_segment_iterator_of_geometry<L, TML> tester;
tester::apply(from_wkt<L>("LINESTRING(1 -1,2 -2,3 -3,4 -4,5 -5,6 -6, 7 -7,8 -8,9 -9)"),
TML{
{{1,-1},{2,-2}},
{{2,-2},{3,-3}},
{{3,-3},{4,-4}},
{{4,-4},{5,-5}},
{{5,-5},{6,-6}},
{{6,-6},{7,-7}},
{{7,-7},{8,-8}},
{{8,-8},{9,-9}}
});
}
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