| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| // Unit Test |
| |
| // Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands. |
| // Use, modification and distribution is subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #ifndef BOOST_GEOMETRY_TEST_DIFFERENCE_HPP |
| #define BOOST_GEOMETRY_TEST_DIFFERENCE_HPP |
| |
| #include <fstream> |
| #include <iomanip> |
| |
| #include <boost/foreach.hpp> |
| #include <geometry_test_common.hpp> |
| |
| #include <boost/range/algorithm/copy.hpp> |
| |
| #include <boost/geometry/algorithms/correct.hpp> |
| #include <boost/geometry/algorithms/difference.hpp> |
| #include <boost/geometry/algorithms/sym_difference.hpp> |
| |
| #include <boost/geometry/algorithms/area.hpp> |
| #include <boost/geometry/algorithms/num_points.hpp> |
| #include <boost/geometry/algorithms/unique.hpp> |
| |
| #include <boost/geometry/geometries/geometries.hpp> |
| |
| |
| #include <boost/geometry/multi/geometries/multi_point.hpp> |
| #include <boost/geometry/multi/geometries/multi_linestring.hpp> |
| #include <boost/geometry/multi/geometries/multi_polygon.hpp> |
| |
| #include <boost/geometry/strategies/strategies.hpp> |
| |
| #include <boost/geometry/domains/gis/io/wkt/wkt.hpp> |
| |
| |
| #if defined(TEST_WITH_SVG) |
| # include <boost/geometry/extensions/io/svg/svg_mapper.hpp> |
| #endif |
| |
| |
| |
| |
| template <typename OutputType, typename CalculationType, typename G1, typename G2> |
| void test_difference(std::string const& caseid, G1 const& g1, G2 const& g2, |
| std::size_t expected_count, std::size_t expected_point_count, |
| double expected_area, |
| double percentage = 0.0001, |
| bool sym = false) |
| { |
| std::vector<OutputType> clip; |
| |
| typedef typename bg::coordinate_type<G1>::type coordinate_type; |
| typedef typename bg::point_type<G1>::type point_type; |
| |
| if (sym) |
| { |
| bg::sym_difference(g1, g2, clip); |
| } |
| else |
| { |
| bg::difference(g1, g2, clip); |
| } |
| |
| typename bg::default_area_result<G1>::type area = 0; |
| std::size_t n = 0; |
| for (typename std::vector<OutputType>::iterator it = clip.begin(); |
| it != clip.end(); |
| ++it) |
| { |
| if (expected_point_count > 0) |
| { |
| // Get a correct point-count without duplicate points |
| // (note that overlay might be adapted to avoid duplicates) |
| bg::unique(*it); |
| n += bg::num_points(*it); |
| } |
| |
| area += bg::area(*it); |
| } |
| |
| #ifndef BOOST_GEOMETRY_DEBUG_ASSEMBLE |
| { |
| // Test inserter functionality |
| // Test if inserter returns output-iterator (using Boost.Range copy) |
| std::vector<OutputType> inserted, array_with_one_empty_geometry; |
| array_with_one_empty_geometry.push_back(OutputType()); |
| if (sym) |
| { |
| boost::copy(array_with_one_empty_geometry, bg::detail::sym_difference::sym_difference_insert<OutputType>(g1, g2, std::back_inserter(inserted))); |
| } |
| else |
| { |
| boost::copy(array_with_one_empty_geometry, bg::detail::difference::difference_insert<OutputType>(g1, g2, std::back_inserter(inserted))); |
| } |
| |
| BOOST_CHECK_EQUAL(boost::size(clip), boost::size(inserted) - 1); |
| } |
| #endif |
| |
| |
| |
| #if ! defined(BOOST_GEOMETRY_NO_BOOST_TEST) |
| /*if (expected_point_count > 0) |
| { |
| BOOST_CHECK_MESSAGE(n == expected_point_count, |
| "difference: " << caseid |
| << " #points expected: " << expected_point_count |
| << " detected: " << n |
| << " type: " << string_from_type<coordinate_type>::name() |
| ); |
| }*/ |
| |
| if (expected_count > 0) |
| { |
| BOOST_CHECK_MESSAGE(clip.size() == expected_count, |
| "difference: " << caseid |
| << " #outputs expected: " << expected_count |
| << " detected: " << clip.size() |
| << " type: " << string_from_type<coordinate_type>::name() |
| ); |
| } |
| |
| BOOST_CHECK_CLOSE(area, expected_area, percentage); |
| #endif |
| |
| |
| #if defined(TEST_WITH_SVG) |
| { |
| std::ostringstream filename; |
| filename << "difference_" |
| << caseid << "_" |
| << string_from_type<coordinate_type>::name() |
| << string_from_type<CalculationType>::name() |
| << ".svg"; |
| |
| std::ofstream svg(filename.str().c_str()); |
| |
| bg::svg_mapper<point_type> mapper(svg, 500, 500); |
| |
| mapper.add(g1); |
| mapper.add(g2); |
| |
| mapper.map(g1, "fill-opacity:0.3;fill:rgb(51,51,153);stroke:rgb(51,51,153);stroke-width:3"); |
| mapper.map(g2, "fill-opacity:0.5;fill:rgb(153,204,0);stroke:rgb(153,204,0);stroke-width:3"); |
| |
| for (typename std::vector<OutputType>::const_iterator it = clip.begin(); |
| it != clip.end(); ++it) |
| { |
| mapper.map(*it, |
| //sym ? "fill-opacity:0.2;stroke-opacity:0.4;fill:rgb(255,255,0);stroke:rgb(255,0,255);stroke-width:8" : |
| "fill-opacity:0.2;stroke-opacity:0.4;fill:rgb(255,0,0);stroke:rgb(255,0,255);stroke-width:8"); |
| } |
| } |
| #endif |
| } |
| |
| |
| #ifdef BOOST_GEOMETRY_CHECK_WITH_POSTGIS |
| static int counter = 0; |
| #endif |
| |
| |
| template <typename OutputType, typename G1, typename G2> |
| void test_one(std::string const& caseid, |
| std::string const& wkt1, std::string const& wkt2, |
| std::size_t expected_count1, |
| std::size_t expected_point_count1, |
| double expected_area1, |
| |
| std::size_t expected_count2, |
| std::size_t expected_point_count2, |
| double expected_area2, |
| |
| double percentage = 0.0001) |
| { |
| #ifdef BOOST_GEOMETRY_CHECK_WITH_SQLSERVER |
| std::cout |
| << "-- " << caseid << std::endl |
| << "with qu as (" << std::endl |
| << "select geometry::STGeomFromText('" << wkt1 << "',0) as p," << std::endl |
| << "geometry::STGeomFromText('" << wkt2 << "',0) as q)" << std::endl |
| << "select " << std::endl |
| << " p.STDifference(q).STNumGeometries() as cnt1,p.STDifference(q).STNumPoints() as pcnt1,p.STDifference(q).STArea() as area1," << std::endl |
| << " q.STDifference(p).STNumGeometries() as cnt2,q.STDifference(p).STNumPoints() as pcnt2,q.STDifference(p).STArea() as area2," << std::endl |
| << " p.STDifference(q) as d1,q.STDifference(p) as d2 from qu" << std::endl << std::endl; |
| #endif |
| |
| |
| G1 g1; |
| bg::read_wkt(wkt1, g1); |
| |
| G2 g2; |
| bg::read_wkt(wkt2, g2); |
| |
| bg::correct(g1); |
| bg::correct(g2); |
| |
| test_difference<OutputType, void>(caseid + "_a", g1, g2, |
| expected_count1, expected_point_count1, |
| expected_area1, percentage); |
| #ifdef BOOST_GEOMETRY_DEBUG_ASSEMBLE |
| return; |
| #endif |
| test_difference<OutputType, void>(caseid + "_b", g2, g1, |
| expected_count2, expected_point_count2, |
| expected_area2, percentage); |
| test_difference<OutputType, void>(caseid + "_s", g1, g2, |
| expected_count1 + expected_count2, |
| expected_point_count1 + expected_point_count2, |
| expected_area1 + expected_area2, |
| percentage, true); |
| |
| |
| #ifdef BOOST_GEOMETRY_CHECK_WITH_POSTGIS |
| std::cout |
| << (counter > 0 ? "union " : "") |
| << "select " << counter++ |
| << ", '" << caseid << "' as caseid" |
| << ", ST_NumPoints(ST_Difference(ST_GeomFromText('" << wkt1 << "'), " |
| << " ST_GeomFromText('" << wkt2 << "'))) " |
| << ", ST_NumGeometries(ST_Difference(ST_GeomFromText('" << wkt1 << "'), " |
| << " ST_GeomFromText('" << wkt2 << "'))) " |
| << ", ST_Area(ST_Difference(ST_GeomFromText('" << wkt1 << "'), " |
| << " ST_GeomFromText('" << wkt2 << "'))) " |
| //<< ", " << expected_area1 << " as expected_area_a" |
| //<< ", " << expected_count1 << " as expected_count_a" |
| << ", ST_NumPoints(ST_Difference(ST_GeomFromText('" << wkt2 << "'), " |
| << " ST_GeomFromText('" << wkt1 << "'))) " |
| << ", ST_NumGeometries(ST_Difference(ST_GeomFromText('" << wkt2 << "'), " |
| << " ST_GeomFromText('" << wkt1 << "'))) " |
| << ", ST_Area(ST_Difference(ST_GeomFromText('" << wkt2 << "'), " |
| << " ST_GeomFromText('" << wkt1 << "'))) " |
| //<< ", " << expected_area2 << " as expected_area_b" |
| //<< ", " << expected_count2 << " as expected_count_b" |
| << ", ST_NumPoints(ST_SymDifference(ST_GeomFromText('" << wkt1 << "'), " |
| << " ST_GeomFromText('" << wkt2 << "'))) " |
| << ", ST_NumGeometries(ST_SymDifference(ST_GeomFromText('" << wkt1 << "'), " |
| << " ST_GeomFromText('" << wkt2 << "'))) " |
| << ", ST_Area(ST_SymDifference(ST_GeomFromText('" << wkt1 << "'), " |
| << " ST_GeomFromText('" << wkt2 << "'))) " |
| //<< ", " << expected_area1 + expected_area2 << " as expected_area_s" |
| //<< ", " << expected_count1 + expected_count2 << " as expected_count_s" |
| << std::endl; |
| #endif |
| |
| } |
| |
| |
| |
| #endif |
