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https://github.com/boostorg/geometry.git
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c1ca7590fd
fix test cases with closed linestrings; add more test cases; add tests for areal geometries with duplicate points;
325 lines
12 KiB
C++
325 lines
12 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Unit Test
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// Copyright (c) 2014, Oracle and/or its affiliates.
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_TEST_MODULE
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#define BOOST_TEST_MODULE test_is_simple
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#endif
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#include <iostream>
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#include <string>
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#include <boost/test/included/unit_test.hpp>
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#include <boost/geometry/geometries/point_xy.hpp>
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#include <boost/geometry/geometries/segment.hpp>
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#include <boost/geometry/geometries/linestring.hpp>
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#include <boost/geometry/geometries/polygon.hpp>
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#include <boost/geometry/geometries/box.hpp>
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#include <boost/geometry/geometries/multi_point.hpp>
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#include <boost/geometry/geometries/multi_linestring.hpp>
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#include <boost/geometry/geometries/multi_polygon.hpp>
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#include <boost/geometry/strategies/strategies.hpp>
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#include <boost/geometry/io/wkt/read.hpp>
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#ifdef GEOMETRY_TEST_DEBUG
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#include <boost/geometry/core/tag.hpp>
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#include <boost/geometry/core/tags.hpp>
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#include <boost/geometry/io/wkt/write.hpp>
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#include <boost/geometry/io/dsv/write.hpp>
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#endif
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#include <boost/geometry/algorithms/is_valid.hpp>
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#include <boost/geometry/algorithms/is_simple.hpp>
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namespace bg = ::boost::geometry;
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typedef bg::model::point<double, 2, bg::cs::cartesian> point_type;
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typedef bg::model::segment<point_type> segment_type;
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typedef bg::model::linestring<point_type> linestring_type;
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typedef bg::model::multi_linestring<linestring_type> multi_linestring_type;
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// ccw open and closed polygons
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typedef bg::model::polygon<point_type,false,false> open_ccw_polygon_type;
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typedef bg::model::polygon<point_type,false,true> closed_ccw_polygon_type;
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// multi-geometries
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typedef bg::model::multi_point<point_type> multi_point_type;
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typedef bg::model::multi_polygon<open_ccw_polygon_type> multi_polygon_type;
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// box
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typedef bg::model::box<point_type> box_type;
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template <typename Geometry>
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Geometry from_wkt(std::string const& wkt)
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{
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Geometry g;
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bg::read_wkt(wkt, g);
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return g;
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}
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//----------------------------------------------------------------------------
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#ifdef GEOMETRY_TEST_DEBUG
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template <typename Geometry, typename Tag = typename bg::tag<Geometry>::type>
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struct pretty_print_geometry
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{
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static inline std::ostream&
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apply(std::ostream& os, Geometry const& geometry)
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{
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os << bg::wkt(geometry);
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return os;
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}
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};
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template <typename Box>
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struct pretty_print_geometry<Box, bg::box_tag>
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{
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static inline std::ostream&
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apply(std::ostream& os, Box const& box)
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{
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return os << "BOX" << bg::dsv(box);
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}
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};
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template <typename Segment>
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struct pretty_print_geometry<Segment, bg::segment_tag>
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{
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static inline std::ostream&
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apply(std::ostream& os, Segment const& segment)
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{
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return os << "SEGMENT" << bg::dsv(segment);
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}
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};
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template <typename Ring>
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struct pretty_print_geometry<Ring, bg::ring_tag>
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{
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static inline std::ostream&
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apply(std::ostream& os, Ring const& ring)
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{
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return os << "RING" << bg::dsv(ring);
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}
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};
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#endif
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//----------------------------------------------------------------------------
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template <typename Geometry>
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void test_simple(Geometry const& g, bool simple_geometry)
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{
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << "=======" << std::endl;
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#endif
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bool simple = bg::is_simple(g);
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// BOOST_CHECK( bg::is_valid(g) );
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BOOST_CHECK( simple == simple_geometry );
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << "Geometry: ";
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pretty_print_geometry<Geometry>::apply(std::cout, g);
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std::cout << std::endl;
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std::cout << std::boolalpha;
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std::cout << "is simple: " << simple << std::endl;
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std::cout << "expected result: " << simple_geometry << std::endl;
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std::cout << "=======" << std::endl;
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std::cout << std::endl << std::endl;
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std::cout << std::noboolalpha;
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#endif
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}
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//----------------------------------------------------------------------------
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BOOST_AUTO_TEST_CASE( test_is_simple_point )
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{
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl;
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std::cout << "************************************" << std::endl;
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std::cout << " is_simple: POINT " << std::endl;
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std::cout << "************************************" << std::endl;
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#endif
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typedef point_type G;
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test_simple(from_wkt<G>("POINT(0 0)"), true);
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}
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BOOST_AUTO_TEST_CASE( test_is_simple_multipoint )
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{
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl;
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std::cout << "************************************" << std::endl;
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std::cout << " is_simple: MULTIPOINT " << std::endl;
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std::cout << "************************************" << std::endl;
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#endif
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typedef multi_point_type G;
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test_simple(from_wkt<G>("MULTIPOINT(0 0)"), true);
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test_simple(from_wkt<G>("MULTIPOINT(0 0,1 0,1 1,0 1)"), true);
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test_simple(from_wkt<G>("MULTIPOINT(0 0,1 0,1 1,1 0,0 1)"), false);
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}
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BOOST_AUTO_TEST_CASE( test_is_simple_segment )
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{
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl;
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std::cout << "************************************" << std::endl;
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std::cout << " is_simple: SEGMENT " << std::endl;
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std::cout << "************************************" << std::endl;
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#endif
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typedef segment_type G;
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test_simple(from_wkt<G>("SEGMENT(0 0,1 0)"), true);
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}
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BOOST_AUTO_TEST_CASE( test_is_simple_linestring )
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{
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl;
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std::cout << "************************************" << std::endl;
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std::cout << " is_simple: LINESTRING " << std::endl;
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std::cout << "************************************" << std::endl;
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#endif
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typedef linestring_type G;
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// valid linestrings with multiple points
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test_simple(from_wkt<G>("LINESTRING(0 0,0 0,1 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,0 0,1 0,0 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,0 0,1 0,1 0,1 1,0 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,2 0,1 1,1 0,1 -1)"), false);
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// simple open linestrings
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test_simple(from_wkt<G>("LINESTRING(0 0,1 2)"), true);
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test_simple(from_wkt<G>("LINESTRING(0 0,1 2,2 3)"), true);
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// simple closed linestrings
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,1 1,0 0)"), true);
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,1 1,0 1,0 0)"), true);
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// non-simple linestrings
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,0 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,2 10,0.5 -1)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,2 1,1 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,1 0,2 1,0.5 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,2 0,1 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,3 0,5 0,1 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,3 0,5 0,4 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,3 0,5 0,4 0,2 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,3 0,2 0,5 0)"), false);
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test_simple(from_wkt<G>("LINESTRING(0 0,2 0,2 2,1 0,0 0)"), false);
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}
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BOOST_AUTO_TEST_CASE( test_is_simple_multilinestring )
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{
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#ifdef GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl;
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std::cout << "************************************" << std::endl;
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std::cout << " is_simple: MULTILINESTRING " << std::endl;
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std::cout << "************************************" << std::endl;
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#endif
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typedef multi_linestring_type G;
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// multilinestrings with linestrings with spikes
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,0 0),(5 0,6 0,7 0))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,0 0),(5 0,1 0,4 1))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,0 0),(5 0,1 0,4 0))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,0 0),(1 0,2 0))"),
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false);
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// simple multilinestrings
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1),(1 1,1 0))"), true);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1),(1 1,1 0),(0 1,1 1))"),
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true);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2),(0 0,1 0,2 0,2 2))"), true);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2),(2 2,2 0,1 0,0 0))"), true);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0),(0 0,-1 0),\
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(1 0,2 0))"),
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true);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0),(-1 0,0 0),\
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(2 0,1 0))"),
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true);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0),(0 0,0 1),\
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(0 0,-1 0),(0 0,0 -1))"),
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true);
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// non-simple multilinestrings
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2),(0 0,2 2))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2),(2 2,0 0))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2),\
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(0 0,1 0,1 1,2 0,2 2))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1,2 2),\
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(0 0,1 0,1 1,2 0,2 2))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1,2 2),(2 2,0 0))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(0 0,1 1))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(0 0,3 3))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(1 1,3 3))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(1 1,2 2))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(2 2,3 3))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(2 2,4 4))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(4 4,2 2))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1),(0 1,1 0))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 0),(1 0,0 1))"), false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1),(1 1,1 0),\
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(1 1,0 1,0.5,0.5))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,1 1,0 1,0 0),(1 0,1 -1))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,1 1,0 1,0 0),(-1 0,0 0))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,1 1,0 1,0 0),\
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(0 0,-1 0,-1 -1,0 -1,0 0))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 0,1 1,0 1,0 0),\
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(-1 -1,-1 0,0 0,0 -1,-1 -1))"),
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false);
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}
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BOOST_AUTO_TEST_CASE( test_is_simple_areal )
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{
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typedef box_type b;
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typedef open_ccw_polygon_type o_ccw_p;
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typedef multi_polygon_type mpl;
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// check that is_simple compiles for boxes
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test_simple(from_wkt<b>("BOX(0 0,1 1)"), true);
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// simple polygons and multi-polygons
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test_simple(from_wkt<o_ccw_p>("POLYGON((0 0,1 0,1 1))"), true);
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test_simple(from_wkt<o_ccw_p>("POLYGON((0 0,10 0,10 10,0 10),\
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(1 1,1 9,9 9,9 1))"),
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true);
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test_simple(from_wkt<mpl>("MULTIPOLYGON(((0 0,1 0,1 1)),\
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((10 0,20 0,20 10,10 10)))"),
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true);
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// non-simple polygons & multi-polygons (have duplicate points)
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test_simple(from_wkt<o_ccw_p>("POLYGON((0 0,1 0,1 0,1 1))"), false);
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test_simple(from_wkt<o_ccw_p>("POLYGON((0 0,10 0,10 10,0 10),\
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(1 1,1 9,9 9,9 9,9 1))"),
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false);
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test_simple(from_wkt<mpl>("MULTIPOLYGON(((0 0,1 0,1 1,1 1)),\
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((10 0,20 0,20 0,20 10,10 10)))"),
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false);
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}
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