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346784d5e5
code to file test_is_valid.hpp; make testing more elaborate: for rings, convert them to polygons and multi-polygons and test them as such; for polygons, convert them to multi-polygons and test them as such;
408 lines
11 KiB
C++
408 lines
11 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_GEOMETRY_TEST_IS_VALID_HPP
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#define BOOST_GEOMETRY_TEST_IS_VALID_HPP
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <boost/core/ignore_unused.hpp>
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#include <boost/range.hpp>
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#include <boost/variant/variant.hpp>
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#include <boost/geometry/core/closure.hpp>
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#include <boost/geometry/core/exterior_ring.hpp>
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#include <boost/geometry/core/interior_rings.hpp>
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#include <boost/geometry/core/point_order.hpp>
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#include <boost/geometry/core/ring_type.hpp>
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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/geometries/point_xy.hpp>
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#include <boost/geometry/geometries/segment.hpp>
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#include <boost/geometry/geometries/box.hpp>
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#include <boost/geometry/geometries/linestring.hpp>
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#include <boost/geometry/geometries/ring.hpp>
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#include <boost/geometry/geometries/polygon.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/convert.hpp>
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#include <boost/geometry/algorithms/num_points.hpp>
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#include <boost/geometry/algorithms/is_valid.hpp>
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#include <boost/geometry/algorithms/detail/check_iterator_range.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::box<point_type> box_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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typedef bg::model::multi_point<point_type> multi_point_type;
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//----------------------------------------------------------------------------
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// returns true if a geometry can be converted to closed
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template
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<
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typename Geometry,
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typename Tag = typename bg::tag<Geometry>::type,
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bg::closure_selector Closure = bg::closure<Geometry>::value
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>
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struct is_convertible_to_closed
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{
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static inline bool apply(Geometry const&)
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{
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return false;
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}
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};
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template <typename Ring>
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struct is_convertible_to_closed<Ring, bg::ring_tag, bg::open>
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{
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static inline bool apply(Ring const& ring)
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{
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return boost::size(ring) > 0;
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}
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};
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template <typename Polygon>
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struct is_convertible_to_closed<Polygon, bg::polygon_tag, bg::open>
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{
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typedef typename bg::ring_type<Polygon>::type ring_type;
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template <typename InteriorRings>
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static inline
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bool apply_to_interior_rings(InteriorRings const& interior_rings)
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{
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return bg::detail::check_iterator_range
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<
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is_convertible_to_closed<ring_type>
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>::apply(boost::begin(interior_rings),
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boost::end(interior_rings));
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}
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static inline bool apply(Polygon const& polygon)
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{
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return boost::size(bg::exterior_ring(polygon)) > 0
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&& apply_to_interior_rings(bg::interior_rings(polygon));
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}
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};
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template <typename MultiPolygon>
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struct is_convertible_to_closed<MultiPolygon, bg::multi_polygon_tag, bg::open>
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{
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typedef typename boost::range_value<MultiPolygon>::type polygon;
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static inline bool apply(MultiPolygon const& multi_polygon)
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{
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return bg::detail::check_iterator_range
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<
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is_convertible_to_closed<polygon>,
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false // do not allow empty multi-polygon
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>::apply(boost::begin(multi_polygon),
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boost::end(multi_polygon));
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}
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};
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//----------------------------------------------------------------------------
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// returns true if a geometry can be converted to cw
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template
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<
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typename Geometry,
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typename Tag = typename bg::tag<Geometry>::type,
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bg::order_selector Order = bg::point_order<Geometry>::value
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>
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struct is_convertible_to_cw
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{
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static inline bool apply(Geometry const&)
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{
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return bg::point_order<Geometry>::value == bg::counterclockwise;
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}
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};
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//----------------------------------------------------------------------------
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// returns true if geometry can be converted to polygon
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template
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<
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typename Geometry,
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typename Tag = typename bg::tag<Geometry>::type
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>
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struct is_convertible_to_polygon
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{
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typedef Geometry type;
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static bool const value = false;
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};
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template <typename Ring>
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struct is_convertible_to_polygon<Ring, bg::ring_tag>
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{
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typedef bg::model::polygon
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<
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typename bg::point_type<Ring>::type,
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bg::point_order<Ring>::value == bg::clockwise,
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bg::closure<Ring>::value == bg::closed
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> type;
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static bool const value = true;
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};
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//----------------------------------------------------------------------------
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// returns true if geometry can be converted to multi-polygon
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template
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<
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typename Geometry,
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typename Tag = typename bg::tag<Geometry>::type
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>
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struct is_convertible_to_multipolygon
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{
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typedef Geometry type;
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static bool const value = false;
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};
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template <typename Ring>
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struct is_convertible_to_multipolygon<Ring, bg::ring_tag>
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{
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typedef bg::model::multi_polygon
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<
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typename is_convertible_to_polygon<Ring>::type
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> type;
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static bool const value = true;
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};
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template <typename Polygon>
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struct is_convertible_to_multipolygon<Polygon, bg::polygon_tag>
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{
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typedef bg::model::multi_polygon<Polygon> type;
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static bool const value = true;
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};
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//----------------------------------------------------------------------------
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template <typename ValidityTester>
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struct validity_checker
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{
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template <typename Geometry>
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static inline bool apply(Geometry const& geometry,
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bool expected_result)
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{
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bool valid = ValidityTester::apply(geometry);
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BOOST_CHECK_MESSAGE( valid == expected_result,
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"Expected: " << expected_result
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<< " detected: " << valid
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<< " wkt: " << bg::wkt(geometry) );
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return valid;
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}
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};
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//----------------------------------------------------------------------------
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struct default_validity_tester
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{
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template <typename Geometry>
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static inline bool apply(Geometry const& geometry)
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{
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return bg::is_valid(geometry);
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}
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};
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template <bool AllowSpikes>
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struct validity_tester_linear
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{
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template <typename Geometry>
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static inline bool apply(Geometry const& geometry)
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{
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return bg::dispatch::is_valid
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<
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Geometry,
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typename bg::tag<Geometry>::type,
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AllowSpikes
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>::apply(geometry);
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}
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};
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template <bool AllowDuplicates>
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struct validity_tester_areal
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{
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template <typename Geometry>
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static inline bool apply(Geometry const& geometry)
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{
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bool const irrelevant = true;
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return bg::dispatch::is_valid
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<
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Geometry,
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typename bg::tag<Geometry>::type,
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irrelevant,
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AllowDuplicates
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>::apply(geometry);
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}
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};
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//----------------------------------------------------------------------------
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template
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<
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typename ValidityTester,
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typename Geometry,
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typename ClosedGeometry = Geometry,
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typename CWGeometry = Geometry,
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typename CWClosedGeometry = Geometry,
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typename Tag = typename bg::tag<Geometry>::type
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>
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struct test_valid
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{
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template <typename G>
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static inline void base_test(G const& g, 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 valid = validity_checker
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<
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ValidityTester
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>::apply(g, expected_result);
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boost::ignore_unused(valid);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "Geometry: ";
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pretty_print_geometry<G>::apply(std::cout, g);
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std::cout << std::endl;
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std::cout << "wkt: " << bg::wkt(g) << std::endl;
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std::cout << std::boolalpha;
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std::cout << "is valid? " << valid << 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::noboolalpha;
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#endif
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}
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static inline void apply(Geometry const& geometry, bool expected_result)
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{
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base_test(geometry, expected_result);
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if ( is_convertible_to_closed<Geometry>::apply(geometry) )
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "...checking closed geometry..."
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<< std::endl;
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#endif
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ClosedGeometry closed_geometry;
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bg::convert(geometry, closed_geometry);
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base_test(closed_geometry, expected_result);
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}
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if ( is_convertible_to_cw<Geometry>::apply(geometry) )
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "...checking cw open geometry..."
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<< std::endl;
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#endif
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CWGeometry cw_geometry;
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bg::convert(geometry, cw_geometry);
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base_test(cw_geometry, expected_result);
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if ( is_convertible_to_closed<CWGeometry>::apply(cw_geometry) )
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "...checking cw closed geometry..."
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<< std::endl;
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#endif
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CWClosedGeometry cw_closed_geometry;
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bg::convert(cw_geometry, cw_closed_geometry);
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base_test(cw_closed_geometry, expected_result);
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}
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}
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if ( is_convertible_to_polygon<Geometry>::value )
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "...checking geometry converted to polygon..."
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<< std::endl;
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#endif
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typename is_convertible_to_polygon<Geometry>::type polygon;
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bg::convert(geometry, polygon);
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base_test(polygon, expected_result);
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}
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if ( is_convertible_to_multipolygon<Geometry>::value )
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{
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << "...checking geometry converted to multi-polygon..."
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<< std::endl;
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#endif
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typename is_convertible_to_multipolygon
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<
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Geometry
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>::type multipolygon;
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bg::convert(geometry, multipolygon);
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base_test(multipolygon, expected_result);
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}
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::cout << std::endl << std::endl << std::endl;
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#endif
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}
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};
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//----------------------------------------------------------------------------
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template <typename VariantGeometry>
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struct test_valid_variant
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{
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static inline void apply(VariantGeometry const& vg, bool expected_result)
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{
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test_valid
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<
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default_validity_tester, VariantGeometry
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>::base_test(vg, expected_result);
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}
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};
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#endif // BOOST_GEOMETRY_TEST_IS_VALID_HPP
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