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[test][similarity] Tests for frechet distance algorithms
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Yaghyavardhan singh khangarot
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test-suite boost-geometry-algorithms-length
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:
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[ run hausdorff_distance.cpp : : : : algorithms_hausdorff_distance ]
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[ run frechet_distance.cpp : : : : algorithms_frechet_distance ]
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;
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58
test/algorithms/similarity/frechet_distance.cpp
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58
test/algorithms/similarity/frechet_distance.cpp
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// Boost.Geometry
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// Copyright (c) 2018 Yaghyavardhan Singh Khangarot, Hyderabad, India.
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// Contributed and/or modified by Yaghyavardhan Singh Khangarot, as part of Google Summer of Code 2018 program.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <vector>
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#define BOOST_GEOMETRY_TEST_DEBUG
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#include "./test_frechet_distance.hpp"
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#include <boost/geometry/geometry.hpp>
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#include <boost/geometry/geometries/linestring.hpp>
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#include <boost/geometry/geometries/point_xy.hpp>
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#include <boost/geometry/geometries/polygon.hpp>
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using namespace boost::geometry;
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template <typename P>
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void test_all()
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{
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typedef model::linestring<P> linestring_2d;
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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typedef typename coordinate_system<P>::type CordType;
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std::cout << typeid(CordType).name() << std::endl;
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#endif
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test_geometry<linestring_2d,linestring_2d >("LINESTRING(3 0,2 1,3 2)","LINESTRING(0 0,3 4,4 3)", 3);
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test_geometry<linestring_2d,linestring_2d >("LINESTRING(3 0,2 1,3 2)","LINESTRING(0 0,3 4,4 3)",strategy::distance::pythagoras<>(), 3);
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test_geometry<linestring_2d,linestring_2d >("LINESTRING(0 0,3 4,4 3)","LINESTRING(0 0,3 4,4 3)", 0);
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test_geometry<linestring_2d,linestring_2d >("LINESTRING(0 0,3 4,4 3)","LINESTRING(0 0,3 4,4 3)",strategy::distance::pythagoras<>(), 0);
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}
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int main()
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{
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//Cartesian Coordinate System
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test_all<model::d2::point_xy<int,cs::cartesian> >();
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test_all<model::d2::point_xy<float,cs::cartesian> >();
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test_all<model::d2::point_xy<double,cs::cartesian> >();
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//Geographic Coordinate System
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test_all<model::d2::point_xy<int,cs::geographic<degree> > >();
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test_all<model::d2::point_xy<float,cs::geographic<degree> > >();
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test_all<model::d2::point_xy<double,cs::geographic<degree> > >();
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//Spherical_Equatorial Coordinate System
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test_all<model::d2::point_xy<int,cs::spherical_equatorial<degree> > >();
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test_all<model::d2::point_xy<float,cs::spherical_equatorial<degree> > >();
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test_all<model::d2::point_xy<double,cs::spherical_equatorial<degree> > >();
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return 0;
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}
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153
test/algorithms/similarity/test_frechet_distance.hpp
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153
test/algorithms/similarity/test_frechet_distance.hpp
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// Boost.Geometry
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// Copyright (c) 2018 Yaghyavardhan Singh Khangarot, Hyderabad, India.
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// Contributed and/or modified by Yaghyavardhan Singh Khangarot, as part of Google Summer of Code 2018 program.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#define BOOST_TEST_MAIN
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#include <boost/test/unit_test.hpp>
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#ifndef BOOST_GEOMETRY_TEST_frechet_DISTANCE_HPP
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#define BOOST_GEOMETRY_TEST_frechet_DISTANCE_HPP
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#define BOOST_GEOMETRY_TEST_DEBUG
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//#include <boost/test/unit_test.hpp>
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#include <boost/test/floating_point_comparison.hpp>
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#include "../../../include/boost/geometry/algorithms/frechet_distance.hpp"
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#include <boost/geometry/io/wkt/wkt.hpp>
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#include <boost/geometry/strategies/strategies.hpp>
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#include <boost/variant/variant.hpp>
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namespace bg = boost::geometry;
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template <typename Geometry1,typename Geometry2>
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void test_frechet_distance(Geometry1 const& geometry1,Geometry2 const& geometry2,
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typename bg::distance_result
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<
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typename bg::point_type<Geometry1>::type,
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typename bg::point_type<Geometry2>::type
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>::type expected_frechet_distance )
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{
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using namespace bg;
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typedef typename distance_result
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<
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typename point_type<Geometry1>::type,
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typename point_type<Geometry2>::type
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>::type result_type;
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long double h_distance = bg::frechet_distance(geometry1,geometry2);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::ostringstream out;
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out << typeid(typename bg::coordinate_type<Geometry1>::type).name()
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<< std::endl
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<< typeid(typename bg::coordinate_type<Geometry2>::type).name()
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<< std::endl
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<< typeid(h_distance).name()
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<< std::endl
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<< "frechet_distance : " << bg::frechet_distance(geometry1,geometry2)
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<< std::endl;
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std::cout << out.str();
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#endif
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// BOOST_CHECK_CLOSE(h_distance, expected_frechet_distance, 0.0001);
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}
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template <typename Geometry1,typename Geometry2>
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void test_geometry(std::string const& wkt1,std::string const& wkt2,
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typename bg::distance_result
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<
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typename bg::point_type<Geometry1>::type,
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typename bg::point_type<Geometry2>::type
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>::type expected_frechet_distance)
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{
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Geometry1 geometry1;
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bg::read_wkt(wkt1, geometry1);
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Geometry2 geometry2;
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bg::read_wkt(wkt2, geometry2);
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test_frechet_distance(geometry1,geometry2,expected_frechet_distance);
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#if !defined(BOOST_GEOMETRY_TEST_DEBUG)
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test_frechet_distance(boost::variant<Geometry1,Geometry2>(geometry1,geometry2), expected_frechet_distance);
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#endif
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}
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template <typename Geometry1,typename Geometry2 ,typename Strategy>
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void test_frechet_distance(Geometry1 const& geometry1,Geometry2 const& geometry2,Strategy strategy,
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typename bg::distance_result
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<
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typename bg::point_type<Geometry1>::type,
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typename bg::point_type<Geometry2>::type,
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Strategy
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>::type expected_frechet_distance )
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{
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using namespace bg;
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typedef typename distance_result
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<
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typename point_type<Geometry1>::type,
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typename point_type<Geometry2>::type,
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Strategy
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>::type result_type;
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long double h_distance = bg::frechet_distance(geometry1,geometry2,strategy);
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#ifdef BOOST_GEOMETRY_TEST_DEBUG
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std::ostringstream out;
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out << typeid(typename bg::coordinate_type<Geometry1>::type).name()
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<< std::endl
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<< typeid(typename bg::coordinate_type<Geometry2>::type).name()
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<< std::endl
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<< typeid(h_distance).name()
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<< std::endl
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<< "frechet_distance : " << bg::frechet_distance(geometry1,geometry2,strategy)
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<< std::endl;
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std::cout << out.str();
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#endif
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//BOOST_CHECK_CLOSE(h_distance, expected_frechet_distance, 0.0001);
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}
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template <typename Geometry1,typename Geometry2,typename Strategy>
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void test_geometry(std::string const& wkt1,std::string const& wkt2,Strategy strategy,
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typename bg::distance_result
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<
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typename bg::point_type<Geometry1>::type,
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typename bg::point_type<Geometry2>::type,
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Strategy
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>::type expected_frechet_distance)
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{
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Geometry1 geometry1;
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bg::read_wkt(wkt1, geometry1);
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Geometry2 geometry2;
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bg::read_wkt(wkt2, geometry2);
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test_frechet_distance(geometry1,geometry2,strategy,expected_frechet_distance);
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#if !defined(BOOST_GEOMETRY_TEST_DEBUG)
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test_frechet_distance(boost::variant<Geometry1,Geometry2,Strategy>(geometry1,geometry2,strategy), expected_frechet_distance);
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#endif
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}
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template <typename Geometry1,typename Geometry2>
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void test_empty_input(Geometry1 const& geometry1,Geometry2 const& geometry2)
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{
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try
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{
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bg::frechet_distance(geometry1,geometry2);
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}
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catch(bg::empty_input_exception const& )
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{
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return;
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}
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//BOOST_CHECK_MESSAGE(false, "A empty_input_exception should have been thrown" );
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}
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#endif
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