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Diffstat (limited to 'libs/geometry/test/robustness/overlay/buffer/recursive_polygons_buffer.cpp')
| -rw-r--r-- | libs/geometry/test/robustness/overlay/buffer/recursive_polygons_buffer.cpp | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/libs/geometry/test/robustness/overlay/buffer/recursive_polygons_buffer.cpp b/libs/geometry/test/robustness/overlay/buffer/recursive_polygons_buffer.cpp new file mode 100644 index 0000000000..e54260f3be --- /dev/null +++ b/libs/geometry/test/robustness/overlay/buffer/recursive_polygons_buffer.cpp @@ -0,0 +1,352 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) +// Robustness Test + +// Copyright (c) 2012 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) + +#if defined(_MSC_VER) +# pragma warning( disable : 4244 ) +# pragma warning( disable : 4267 ) +#endif + +#include <fstream> +#include <sstream> + +#include <boost/foreach.hpp> +#include <boost/program_options.hpp> +#include <boost/random/linear_congruential.hpp> +#include <boost/random/uniform_int.hpp> +#include <boost/random/uniform_real.hpp> +#include <boost/random/variate_generator.hpp> +#include <boost/timer.hpp> + +#include <boost/geometry.hpp> +#include <boost/geometry/geometries/geometries.hpp> +#include <boost/geometry/geometries/point_xy.hpp> +#include <boost/geometry/multi/geometries/multi_geometries.hpp> + +#include <boost/geometry/extensions/io/svg/svg_mapper.hpp> +#include <boost/geometry/extensions/algorithms/midpoints.hpp> + +#include <boost/geometry/extensions/algorithms/buffer/buffer_inserter.hpp> + +#include <boost/geometry/multi/multi.hpp> // TODO: more specific +#include <boost/geometry/extensions/algorithms/buffer/multi_buffer_inserter.hpp> + +#include <boost/geometry/extensions/strategies/buffer.hpp> + + +#include <common/common_settings.hpp> +#include <common/make_square_polygon.hpp> + + +struct buffer_settings : public common_settings +{ + int join_code; + double distance; +}; + +namespace bg = boost::geometry; + +template <typename Geometry1, typename Geometry2> +void create_svg(std::string const& filename + , Geometry1 const& mp + , Geometry2 const& buffer + ) +{ + typedef typename boost::geometry::point_type<Geometry1>::type point_type; + + + std::ofstream svg(filename.c_str()); + boost::geometry::svg_mapper<point_type> mapper(svg, 800, 800); + + boost::geometry::model::box<point_type> box; + bg::envelope(mp, box); + bg::buffer(box, box, 1.0); + mapper.add(box); + + if (bg::num_points(buffer) > 0) + { + bg::envelope(buffer, box); + bg::buffer(box, box, 1.0); + mapper.add(box); + } + + mapper.map(mp, "fill-opacity:0.5;fill:rgb(153,204,0);stroke:rgb(153,204,0);stroke-width:3"); + mapper.map(buffer, "stroke-opacity:0.9;stroke:rgb(0,0,0);fill:none;stroke-width:1"); + + //mapper.map(intersection,"opacity:0.6;stroke:rgb(0,128,0);stroke-width:5"); +} + + + + +template <typename MultiPolygon, typename Settings> +bool verify(std::string const& caseid, MultiPolygon const& mp, MultiPolygon const& buffer, Settings const& settings) +{ + bool result = true; + + // Area of buffer must be larger than of original polygon + BOOST_AUTO(area_mp, bg::area(mp)); + BOOST_AUTO(area_buf, bg::area(buffer)); + + if (area_buf < area_mp) + { + result = false; + } + + if (result) + { + typedef boost::range_value<MultiPolygon const>::type polygon_type; + BOOST_FOREACH(polygon_type const& polygon, mp) + { + typename bg::point_type<polygon_type>::type point; + bg::point_on_border(point, polygon); + if (! bg::within(point, buffer)) + { + result = false; + } + } + } + + bool svg = settings.svg; + bool wkt = settings.wkt; + if (! result) + { + std::cout << "ERROR " << caseid << std::endl; + //std::cout << bg::wkt(mp) << std::endl; + //std::cout << bg::wkt(buffer) << std::endl; + svg = true; + wkt = true; + } + + if (svg || wkt) + { + //std::cout << caseid << std::endl; + } + + if (svg) + { + std::ostringstream filename; + filename << caseid << "_" + << typeid(typename bg::coordinate_type<MultiPolygon>::type).name() + << ".svg"; + create_svg(filename.str(), mp, buffer); + } + + if (wkt) + { + std::ostringstream filename; + filename << caseid << "_" + << typeid(typename bg::coordinate_type<MultiPolygon>::type).name() + << ".wkt"; + std::ofstream stream(filename.str().c_str()); + stream << bg::wkt(mp) << std::endl; + stream << bg::wkt(buffer) << std::endl; + } + + return result; +} + +template <typename MultiPolygon, typename Generator, typename Settings> +bool test_buffer(MultiPolygon& result, int& index, + Generator& generator, + int level, Settings const& settings) +{ + MultiPolygon p, q; + + // Generate two boxes + if (level == 0) + { + p.resize(1); + q.resize(1); + make_square_polygon(p.front(), generator, settings); + make_square_polygon(q.front(), generator, settings); + bg::correct(p); + bg::correct(q); + } + else + { + bg::correct(p); + bg::correct(q); + if (! test_buffer(p, index, generator, level - 1, settings) + || ! test_buffer(q, index, generator, level - 1, settings)) + { + return false; + } + } + + typedef typename boost::range_value<MultiPolygon>::type polygon; + + MultiPolygon mp; + bg::detail::union_::union_insert + < + polygon + >(p, q, std::back_inserter(mp)); + + bg::unique(mp); + bg::unique(mp); + bg::correct(mp); + result = mp; + + + typedef typename bg::coordinate_type<MultiPolygon>::type coordinate_type; + typedef typename bg::point_type<MultiPolygon>::type point_type; + typedef bg::strategy::buffer::distance_assymetric<coordinate_type> distance_strategy_type; + distance_strategy_type distance_strategy(settings.distance, settings.distance); + + typedef bg::strategy::buffer::join_round<point_type, point_type> join_strategy_type; + join_strategy_type join_strategy; + + typedef typename boost::range_value<MultiPolygon>::type polygon_type; + MultiPolygon buffered; + + std::ostringstream out; + out << "recursive_polygons_buffer_" << index++ << "_" << level; + + try + { + switch(settings.join_code) + { + case 1 : + bg::buffer_inserter<polygon_type>(mp, std::back_inserter(buffered), + distance_strategy, + bg::strategy::buffer::join_round<point_type, point_type>()); + break; + case 2 : + bg::buffer_inserter<polygon_type>(mp, std::back_inserter(buffered), + distance_strategy, + bg::strategy::buffer::join_miter<point_type, point_type>()); + break; + default : + return false; + } + } + catch(std::exception const& e) + { + MultiPolygon empty; + std::cout << out.str() << std::endl; + std::cout << "Exception " << e.what() << std::endl; + verify(out.str(), mp, empty, settings); + return false; + } + + + return verify(out.str(), mp, buffered, settings); +} + + +template <typename T, bool Clockwise, bool Closed, typename Settings> +void test_all(int seed, int count, int level, Settings const& settings) +{ + boost::timer t; + + typedef boost::minstd_rand base_generator_type; + + base_generator_type generator(seed); + + boost::uniform_int<> random_coordinate(0, settings.field_size - 1); + boost::variate_generator<base_generator_type&, boost::uniform_int<> > + coordinate_generator(generator, random_coordinate); + + typedef bg::model::polygon + < + bg::model::d2::point_xy<T>, Clockwise, Closed + > polygon; + typedef bg::model::multi_polygon<polygon> mp; + + + int index = 0; + for(int i = 0; i < count; i++) + { + mp p; + test_buffer<mp>(p, index, coordinate_generator, level, settings); + } + std::cout + << "geometries: " << index + << " type: " << typeid(T).name() + << " time: " << t.elapsed() << std::endl; +} + +int main(int argc, char** argv) +{ + try + { + namespace po = boost::program_options; + po::options_description description("=== recursive_polygons_linear_areal ===\nAllowed options"); + + int count = 1; + int seed = static_cast<unsigned int>(std::time(0)); + int level = 3; + bool ccw = false; + bool open = false; + buffer_settings settings; + std::string form = "box"; + std::string join = "round"; + + description.add_options() + ("help", "Help message") + ("seed", po::value<int>(&seed), "Initialization seed for random generator") + ("count", po::value<int>(&count)->default_value(1), "Number of tests") + ("level", po::value<int>(&level)->default_value(3), "Level to reach (higher->slower)") + ("distance", po::value<double>(&settings.distance)->default_value(1.0), "Distance (1.0)") + ("form", po::value<std::string>(&form)->default_value("box"), "Form of the polygons (box, triangle)") + ("join", po::value<std::string>(&join)->default_value("round"), "Form of the joins (round, miter)") + ("ccw", po::value<bool>(&ccw)->default_value(false), "Counter clockwise polygons") + ("open", po::value<bool>(&open)->default_value(false), "Open polygons") + ("size", po::value<int>(&settings.field_size)->default_value(10), "Size of the field") + ("wkt", po::value<bool>(&settings.wkt)->default_value(false), "Create a WKT of the inputs, for all tests") + ("svg", po::value<bool>(&settings.svg)->default_value(false), "Create a SVG for all tests") + ; + + po::variables_map varmap; + po::store(po::parse_command_line(argc, argv, description), varmap); + po::notify(varmap); + + if (varmap.count("help") + || (form != "box" && form != "triangle") + || (join != "round" && join != "miter") + ) + { + std::cout << description << std::endl; + return 1; + } + + settings.triangular = form != "box"; + settings.join_code = join == "round" ? 1 : 2; + + if (ccw && open) + { + test_all<double, false, false>(seed, count, level, settings); + } + else if (ccw) + { + test_all<double, false, true>(seed, count, level, settings); + } + else if (open) + { + test_all<double, true, false>(seed, count, level, settings); + } + else + { + test_all<double, true, true>(seed, count, level, settings); + } + +#if defined(HAVE_TTMATH) + // test_all<ttmath_big, true, true>(seed, count, max, svg, level); +#endif + } + catch(std::exception const& e) + { + std::cout << "Exception " << e.what() << std::endl; + } + catch(...) + { + std::cout << "Other exception" << std::endl; + } + + return 0; +} |