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312 lines
12 KiB
C++
312 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/assert.hpp>
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#include <boost/variant/variant.hpp>
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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/wkt.hpp>
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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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#include <from_wkt.hpp>
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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#include "pretty_print_geometry.hpp"
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#endif
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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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//----------------------------------------------------------------------------
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template <typename Geometry>
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void test_simple(Geometry const& geometry, bool expected_result)
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{
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#ifdef BOOST_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(geometry);
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BOOST_ASSERT( bg::is_valid(geometry) );
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BOOST_CHECK_MESSAGE( simple == expected_result,
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"Expected: " << expected_result
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<< " detected: " << simple
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<< " wkt: " << bg::wkt(geometry) );
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "Geometry: ";
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pretty_print_geometry<Geometry>::apply(std::cout, geometry);
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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: " << expected_result << 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 BOOST_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 BOOST_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 BOOST_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 BOOST_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 BOOST_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),(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),(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),(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),(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),(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))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(0 0,1 1))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(0 0,3 3))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(1 1,3 3))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(1 1,2 2))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(2 2,3 3))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(2 2,4 4))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 2,4 4),(4 4,2 2))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1),(0 1,1 0))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,2 0),(1 0,0 1))"),
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false);
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test_simple(from_wkt<G>("MULTILINESTRING((0 0,1 1),(1 1,1 0),(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),(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),(-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),(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)),((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),(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)),((10 0,20 0,20 0,20 10,10 10)))"),
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false);
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}
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BOOST_AUTO_TEST_CASE( test_is_simple_variant )
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{
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#ifdef BOOST_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: variant support" << std::endl;
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std::cout << "************************************" << std::endl;
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#endif
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typedef bg::model::polygon<point_type> polygon_type; // cw, closed
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typedef boost::variant
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<
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linestring_type, multi_linestring_type, polygon_type
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> variant_geometry;
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variant_geometry vg;
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linestring_type simple_linestring =
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from_wkt<linestring_type>("LINESTRING(0 0,1 0)");
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multi_linestring_type non_simple_multi_linestring = from_wkt
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<
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multi_linestring_type
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>("MULTILINESTRING((0 0,1 0,1 1,0 0),(10 0,1 1))");
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polygon_type simple_polygon =
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from_wkt<polygon_type>("POLYGON((0 0,1 1,1 0,0 0))");
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polygon_type non_simple_polygon =
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from_wkt<polygon_type>("POLYGON((0 0,1 1,1 0,1 0,0 0))");
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vg = simple_linestring;
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test_simple(vg, true);
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vg = non_simple_multi_linestring;
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test_simple(vg, false);
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vg = simple_polygon;
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test_simple(vg, true);
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vg = non_simple_polygon;
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test_simple(vg, false);
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}
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