mirror of
https://github.com/boostorg/geometry.git
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158d3424c2
Added test for remove_spikes Small changes in tests for differences, sectionalize Enhanced write_svg in the sense that .x()/.y() are removed, plus using max to avoid empty nonvisible boxes [SVN r61020]
285 lines
8.1 KiB
C++
285 lines
8.1 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library) test file
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//
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// Copyright Barend Gehrels 2010, Geodan, Amsterdam, the Netherlands
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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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#ifndef BOOST_GEOMETRY_TEST_BUFFER_HPP
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#define BOOST_GEOMETRY_TEST_BUFFER_HPP
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#define BOOST_GEOMETRY_DEBUG_WITH_MAPPER
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//#define BOOST_GEOMETRY_DEBUG_SPLIT_RINGS
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//#define BOOST_GEOMETRY_CHECK_WITH_POSTGIS
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//#define BOOST_GEOMETRY_DEBUG_ASSEMBLE
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//#define BOOST_GEOMETRY_DEBUG_IDENTIFIER
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#undef BOOST_GEOMETRY_DEBUG_WITH_MAPPER
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//#undef TEST_WITH_SVG
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#if defined(BOOST_GEOMETRY_DEBUG_WITH_MAPPER)
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#define TEST_WITH_SVG
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#endif
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#include <fstream>
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#include <iomanip>
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#include <boost/foreach.hpp>
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#include <geometry_test_common.hpp>
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#include <boost/geometry/algorithms/envelope.hpp>
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#include <boost/geometry/algorithms/area.hpp>
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#include <boost/geometry/algorithms/centroid.hpp>
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#include <boost/geometry/algorithms/union.hpp>
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#include <boost/geometry/algorithms/detail/overlay/debug_turn_info.hpp>
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#include <boost/geometry/algorithms/detail/overlay/dissolver.hpp>
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#include <boost/geometry/algorithms/detail/buffer/remove_within_distance.hpp>
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#include <boost/geometry/geometries/geometries.hpp>
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#include <boost/geometry/strategies/strategies.hpp>
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#include <boost/geometry/algorithms/disjoint.hpp>
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#include <boost/geometry/algorithms/dissolve.hpp>
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#include <boost/geometry/algorithms/buffer.hpp>
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#include <boost/geometry/algorithms/detail/buffer/linestring_buffer.hpp>
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#include <boost/geometry/algorithms/detail/buffer/polygon_buffer.hpp>
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#include <boost/geometry/algorithms/detail/overlay/split_rings.hpp>
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#include <boost/geometry/strategies/buffer.hpp>
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#include <boost/geometry/extensions/gis/io/wkt/wkt.hpp>
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#if defined(TEST_WITH_SVG)
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# include <boost/geometry/extensions/io/svg/svg_mapper.hpp>
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#endif
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template
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<
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typename GeometryOut,
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template
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<
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typename
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, typename
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#if defined(BOOST_GEOMETRY_DEBUG_WITH_MAPPER)
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, typename
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#endif
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> class JoinStrategy,
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typename Geometry
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>
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void test_buffer(std::string const& caseid, Geometry const& g1,
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char join,
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double expected_area,
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double distance_left, double distance_right)
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{
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namespace bg = boost::geometry;
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typedef typename bg::coordinate_type<Geometry>::type coordinate_type;
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typedef typename bg::point_type<Geometry>::type point_type;
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typedef bg::strategy::buffer::distance_assymetric<coordinate_type> distance;
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typedef typename bg::ring_type<GeometryOut>::type ring_type;
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typedef JoinStrategy
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<
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point_type,
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typename bg::point_type<GeometryOut>::type
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#ifdef BOOST_GEOMETRY_DEBUG_WITH_MAPPER
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, bg::svg_mapper<point_type>
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#endif
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> join_strategy;
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std::vector<GeometryOut> buffered;
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typedef bg::detail::buffer::intersecting_inserter
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<
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std::vector<GeometryOut>
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> inserter_type;
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#if ! defined(TEST_WITH_SVG)
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inserter_type inserter(buffered);
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#if defined(BOOST_GEOMETRY_TEST_BUFFER_POLYGON)
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GeometryOut buffered_step1;
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bg::detail::buffer::polygon_buffer
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<
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Geometry, Geometry, join_strategy
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>::apply(g1, buffered_step1, distance_left, join_strategy());
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//bg::dissolve_inserter<GeometryOut>(buffered_step1, std::back_inserter(buffered));
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buffered.push_back(buffered_step1);
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#else
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bg::detail::buffer::linestring_buffer
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<
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Geometry, GeometryOut, distance, join_strategy
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>::apply(g1, inserter,
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distance(distance_left, distance_right),
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join_strategy());
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#endif
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#else
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{
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std::ostringstream filename;
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filename << "buffer_"
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<< (bg::geometry_id<Geometry>::value == 2 ? "line" : "poly") << "_"
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<< caseid << "_"
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<< string_from_type<coordinate_type>::name()
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<< "_" << join
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<< ".svg";
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std::ofstream svg(filename.str().c_str());
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bg::svg_mapper<point_type> mapper(svg, 500, 500);
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inserter_type inserter(buffered);
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// Display including a margin
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bg::box<point_type> extent;
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bg::envelope(g1, extent);
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bg::buffer(extent, extent, 2);
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mapper.add(extent);
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#if defined(BOOST_GEOMETRY_TEST_BUFFER_POLYGON)
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Geometry buffered_step1;
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bg::detail::buffer::polygon_buffer
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<
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Geometry, Geometry, join_strategy
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>::apply(g1, buffered_step1, distance_left
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#ifdef BOOST_GEOMETRY_DEBUG_WITH_MAPPER
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, join_strategy(mapper), mapper
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#else
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, join_strategy()
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#endif
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);
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//bg::dissolve_inserter<GeometryOut>(buffered_step1, std::back_inserter(buffered));
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buffered.push_back(buffered_step1);
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#else
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bg::detail::buffer::linestring_buffer
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<
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Geometry, GeometryOut, distance, join_strategy
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>::apply(g1, inserter,
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distance(distance_left, distance_right)
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#ifdef BOOST_GEOMETRY_DEBUG_WITH_MAPPER
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, join_strategy(mapper), mapper
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#else
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, join_strategy()
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#endif
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);
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#endif
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// Map input geometry in green
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mapper.map(g1, "opacity:0.5;fill:rgb(0,255,0);stroke:rgb(0,255,0);stroke-width:1");
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std::vector<ring_type> rings;
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BOOST_FOREACH(GeometryOut const& polygon, buffered)
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{
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//std::cout << bg::wkt(polygon) << " ; POLYGON" << std::endl;
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bg::split_rings(polygon, rings);
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}
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/*
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BOOST_FOREACH(ring_type const& ring, rings)
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{
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mapper.map(ring,
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bg::area(ring) > 0
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? "opacity:0.5;fill:none;stroke:rgb(255,0,0);stroke-width:8"
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: "opacity:0.5;fill:none;stroke:rgb(0,0,255);stroke-width:8"
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);
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std::cout << bg::wkt(ring)
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<< " ; " << bg::area(ring)
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<< " " << ring.size()
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<< std::endl;
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}
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*/
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std::vector<GeometryOut> buffered_and_unioned;
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bg::dissolver(rings, buffered_and_unioned);
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std::vector<GeometryOut> buffered_and_assembled;
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bg::detail::overlay::assemble<GeometryOut>(buffered_and_unioned,
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std::map<bg::ring_identifier, int>(),
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buffered_and_unioned[0], buffered_and_unioned[0], 1, true, true,
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std::back_inserter(buffered_and_assembled));
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// Map buffer in green
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BOOST_FOREACH(GeometryOut const& p, buffered_and_assembled)
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{
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mapper.map(p, "opacity:0.8;fill:none;stroke:rgb(0,64,0);stroke-width:2");
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}
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buffered.swap(buffered_and_assembled);
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}
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#endif
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double a = 0.0;
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BOOST_FOREACH(GeometryOut const& polygon, buffered)
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{
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a += bg::area(polygon);
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}
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BOOST_CHECK_CLOSE(a, expected_area, join == 'r' ? 0.1 : 0.001);
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}
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#ifdef BOOST_GEOMETRY_CHECK_WITH_POSTGIS
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static int counter = 0;
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#endif
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template
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<
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typename Geometry,
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template
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<
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typename
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, typename
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#if defined(BOOST_GEOMETRY_DEBUG_WITH_MAPPER)
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, typename
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#endif
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> class JoinStrategy,
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typename GeometryOut
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>
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void test_one(std::string const& caseid, std::string const& wkt,
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char join, double expected_area,
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double distance_left, double distance_right = -999)
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{
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namespace bg = boost::geometry;
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Geometry g;
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bg::read_wkt(wkt, g);
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typedef typename bg::point_type<Geometry>::type point_type;
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//std::cout << caseid << std::endl;
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#ifdef BOOST_GEOMETRY_CHECK_WITH_POSTGIS
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std::cout
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<< (counter > 0 ? "union " : "")
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<< "select " << counter++
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<< ", '" << caseid << "' as caseid"
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<< ", ST_Area(ST_Buffer(ST_GeomFromText('" << wkt << "'), "
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<< distance_left
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<< ", 'endcap=flat join=" << (join == 'm' ? "miter" : "round") << "'))"
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<< ", " << expected_area
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<< std::endl;
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#endif
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test_buffer<GeometryOut, JoinStrategy>
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(caseid, g, join, expected_area, distance_left, distance_right);
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}
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#endif
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