/Src/Dependencies/Boost/libs/geometry/test/strategies/segment_intersection.cpp
http://hadesmem.googlecode.com/ · C++ · 374 lines · 241 code · 57 blank · 76 comment · 27 complexity · 87450bb4773244b906fd3f880e9521b1 MD5 · raw file
- // Boost.Geometry (aka GGL, Generic Geometry Library)
- // Unit Test
- // Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands.
- // Copyright (c) 2008-2011 Bruno Lalande, Paris, France.
- // Copyright (c) 2009-2011 Mateusz Loskot, London, UK.
- // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
- // (geolib/GGL), copyright (c) 1995-2010 Geodan, 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)
- // We deliberately mix float/double's here so turn off warning
- #pragma warning( disable : 4244 )
- #endif // defined(_MSC_VER)
- #define HAVE_MATRIX_AS_STRING
- #include <geometry_test_common.hpp>
- #include <boost/geometry/algorithms/assign.hpp>
- #include <boost/geometry/strategies/cartesian/cart_intersect.hpp>
- #include <boost/geometry/strategies/intersection_result.hpp>
- #include <boost/geometry/policies/relate/intersection_points.hpp>
- #include <boost/geometry/policies/relate/direction.hpp>
- //#include <boost/geometry/policies/relate/de9im.hpp>
- #include <boost/geometry/policies/relate/tupled.hpp>
- #include <boost/geometry/algorithms/intersection.hpp>
- #include <boost/geometry/geometries/point.hpp>
- #include <boost/geometry/geometries/segment.hpp>
- #include <boost/geometry/geometries/adapted/boost_tuple.hpp>
- BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian);
- template <typename R>
- void print_is(R const& is)
- {
- #ifdef REPORT
- for (int i = 0; i < is.count; i++)
- {
- std::cout
- << " (" << bg::get<0>(is.intersections[i])
- << "," << bg::get<1>(is.intersections[i])
- << ")";
- }
- #endif
- }
- /*
- void print_im(bg::de9im const& im)
- {
- #ifdef REPORT
- if (im.equals()) std::cout << " EQUALS";
- if (im.disjoint()) std::cout << " DISJOINT";
- if (im.intersects()) std::cout << " INTERSECTS";
- if (im.touches()) std::cout << " TOUCHES";
- if (im.crosses()) std::cout << " CROSSES";
- if (im.overlaps()) std::cout << " OVERLAPS";
- if (im.within()) std::cout << " WITHIN";
- if (im.contains()) std::cout << " CONTAINS";
- //std::cout << " ra=" << im.ra << " rb=" << im.rb;
- #endif
- }
- */
- template <typename P>
- static void test_segment_intersection(int caseno,
- int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4,
- std::string const& expected_matrix,
- std::string const& expected_characteristic,
- std::string const& expected_direction_a = "",
- std::string const& expected_direction_b = "",
- int expected_x1 = -99, int expected_y1 = -99,
- int expected_x2 = -99, int expected_y2 = -99)
- {
- using namespace boost::geometry;
- #ifdef REPORT
- std::cout << "CASE " << caseno << std::endl;
- #endif
- typedef typename bg::coordinate_type<P>::type coordinate_type;
- typedef bg::model::referring_segment<const P> segment_type;
- P p1, p2, p3, p4;
- bg::assign_values(p1, x1, y1);
- bg::assign_values(p2, x2, y2);
- bg::assign_values(p3, x3, y3);
- bg::assign_values(p4, x4, y4);
- segment_type s12(p1,p2);
- segment_type s34(p3,p4);
- // Get the intersection point (or two points)
- segment_intersection_points<P> is
- = strategy::intersection::relate_cartesian_segments
- <
- policies::relate::segments_intersection_points
- <
- segment_type,
- segment_type,
- segment_intersection_points<P>
- >
- >::apply(s12, s34);
- // Get the Dimension Extended 9 Intersection Matrix (de9im) for Segments
- // (this one is extended by GGL having opposite)
- /***
- TODO TO BE UPDATED (if necessary) OR DELETED
- de9im_segment matrix = strategy::intersection::relate_cartesian_segments
- <
- policies::relate::segments_de9im<segment_type, segment_type>
- >::apply(s12, s34);
- ***/
- // Get just a character for Left/Right/intersects/etc, purpose is more for debugging
- policies::relate::direction_type dir = strategy::intersection::relate_cartesian_segments
- <
- policies::relate::segments_direction<segment_type, segment_type>
- >::apply(s12, s34);
- int expected_count = 0;
- if (expected_x1 != -99 && expected_y1 != -99)
- {
- expected_count++;
- BOOST_CHECK(is.count >= 1);
- BOOST_CHECK_CLOSE(bg::get<0>(is.intersections[0]),
- coordinate_type(expected_x1), 0.001);
- BOOST_CHECK_CLOSE(bg::get<1>(is.intersections[0]),
- coordinate_type(expected_y1), 0.001);
- }
- if (expected_x2 != -99 && expected_y2 != -99)
- {
- expected_count++;
- BOOST_CHECK(is.count >= 2);
- BOOST_CHECK_CLOSE(bg::get<0>(is.intersections[1]),
- coordinate_type(expected_x2), 0.001);
- BOOST_CHECK_CLOSE(bg::get<1>(is.intersections[1]),
- coordinate_type(expected_y2), 0.001);
- }
- BOOST_CHECK_EQUAL(is.count, expected_count);
- //BOOST_CHECK_EQUAL(expected_matrix, matrix.matrix_as_string());
- std::string characteristic;
- characteristic += dir.how;
- BOOST_CHECK_EQUAL(characteristic, expected_characteristic);
- if (!expected_direction_a.empty())
- {
- BOOST_CHECK_EQUAL(dir.dir_a == 1 ? "L"
- : dir.dir_a == -1 ? "R"
- : "-", expected_direction_a);
- }
- if (!expected_direction_b.empty())
- {
- BOOST_CHECK_EQUAL(dir.dir_b == 1 ? "L"
- : dir.dir_b == -1 ? "R"
- : "-", expected_direction_b);
- }
- // Things can also be used together
- // -> intersection is only once calculated, two results
- /***
- typedef boost::tuple
- <
- de9im_segment,
- policies::relate::direction_type
- > tup;
- tup t = strategy::intersection::relate_cartesian_segments
- <
- policies::relate::segments_tupled
- <
- policies::relate::segments_de9im<segment_type, segment_type>,
- policies::relate::segments_direction<segment_type, segment_type>
- >
- >::apply(segment_type(p1,p2), segment_type(p3,p4));
- //BOOST_CHECK_EQUAL(t.get<0>().matrix_as_string(), matrix.matrix_as_string());
- BOOST_CHECK_EQUAL(t.get<1>().how, dir.how);
- */
- #ifdef REPORT
- //std::cout << std::endl << "\t" << matrix.as_string() << " ";
- std::cout << "METHOD=" << c << " ";
- print_is(is);
- //print_im(matrix);
- std::cout << std::endl;
- #endif
- /*
- To check with a spatial database: issue this statement
- std::cout << "select relate("
- << "GeomFromText(LINESTRING('" << x1 << " " << y1 << "," << x2 << " " << y2 << ")')"
- << ", "
- << "GeomFromText(LINESTRING('" << x3 << " " << y3 << "," << x4 << " " << y4 << ")')"
- << ");"
- << std::endl;
- */
- // Now use generic intersection.
- std::vector<P> out;
- bg::detail::intersection::intersection_insert<P>(s12, s34, std::back_inserter(out));
- BOOST_CHECK_EQUAL(boost::size(out), expected_count);
- if (expected_x1 != -99 && expected_y1 != -99
- && is.count >= 1
- && boost::size(out) >= 1)
- {
- BOOST_CHECK_CLOSE(bg::get<0>(out[0]),
- coordinate_type(expected_x1), 0.001);
- BOOST_CHECK_CLOSE(bg::get<1>(out[0]),
- coordinate_type(expected_y1), 0.001);
- }
- if (expected_x2 != -99 && expected_y2 != -99
- && is.count >= 2
- && boost::size(out) >= 2)
- {
- BOOST_CHECK_CLOSE(bg::get<0>(out[1]),
- coordinate_type(expected_x2), 0.001);
- BOOST_CHECK_CLOSE(bg::get<1>(out[1]),
- coordinate_type(expected_y2), 0.001);
- }
- }
- template <typename P>
- void test_all()
- {
- test_segment_intersection<P>( 1, 0,2, 2,0, 0,0, 2,2, "0-1--0102",
- "i", "R", "L", 1, 1);
- test_segment_intersection<P>( 2, 2,2, 3,1, 0,0, 2,2, "--1-00102",
- "a", "R", "R", 2, 2);
- test_segment_intersection<P>( 3, 3,1, 2,2, 0,0, 2,2, "--1-00102",
- "t", "R", "L", 2, 2);
- test_segment_intersection<P>( 4, 0,2, 1,1, 0,0, 2,2, "--10-0102",
- "m", "L", "L", 1, 1);
- #ifdef REPORT
- std::cout << std::endl;
- #endif
- test_segment_intersection<P>( 5, 1,1, 0,2, 0,0, 2,2, "--10-0102",
- "s", "L", "R", 1, 1);
- test_segment_intersection<P>( 6, 0,2, 2,0, 0,0, 1,1, "-01--0102",
- "m", "R", "R", 1, 1);
- test_segment_intersection<P>( 7, 2,0, 0,2, 0,0, 1,1, "-01--0102",
- "m", "L", "L", 1, 1);
- test_segment_intersection<P>( 8, 2,3, 3,2, 0,0, 2,2, "--1--0102",
- "d");
- #ifdef REPORT
- std::cout << std::endl;
- #endif
- test_segment_intersection<P>( 9, 0,0, 2,2, 0,0, 2,2, "1---0---2",
- "e", "-", "-", 0, 0, 2, 2);
- test_segment_intersection<P>(10, 2,2, 0,0, 0,0, 2,2, "1---0---2",
- "e", "-", "-", 2, 2, 0, 0);
- test_segment_intersection<P>(11, 1,1, 3,3, 0,0, 2,2, "1010-0102",
- "c", "-", "-", 1, 1, 2, 2);
- test_segment_intersection<P>(12, 3,3, 1,1, 0,0, 2,2, "1010-0102",
- "c", "-", "-", 1, 1, 2, 2);
- #ifdef REPORT
- std::cout << std::endl;
- #endif
- test_segment_intersection<P>(13, 0,2, 2,2, 2,1, 2,3, "--10-0102",
- "m", "L", "L", 2, 2);
- test_segment_intersection<P>(14, 2,2, 2,4, 2,0, 2,2, "--1-00102",
- "C", "-", "-", 2, 2);
- test_segment_intersection<P>(15, 2,2, 2,4, 2,0, 2,1, "--1--0102",
- "d");
- test_segment_intersection<P>(16, 2,4, 2,2, 2,0, 2,1, "--1--0102",
- "d");
- test_segment_intersection<P>(17, 2,1, 2,3, 2,2, 2,4, "1010-0102",
- "c", "-", "-", 2, 3, 2, 2);
- test_segment_intersection<P>(18, 2,3, 2,1, 2,2, 2,4, "1010-0102",
- "c", "-", "-", 2, 3, 2, 2);
- test_segment_intersection<P>(19, 0,2, 2,2, 4,2, 2,2, "--1-00102",
- "C", "-", "-", 2, 2);
- test_segment_intersection<P>(20, 0,2, 2,2, 2,2, 4,2, "--1-00102",
- "C", "-", "-", 2, 2);
- test_segment_intersection<P>(21, 1,2, 3,2, 2,1, 2,3, "0-1--0102",
- "i", "R", "L", 2, 2);
- test_segment_intersection<P>(22, 2,4, 2,1, 2,1, 2,3, "101-00--2",
- "c", "-", "-", 2, 1, 2, 3);
- test_segment_intersection<P>(23, 2,4, 2,1, 2,3, 2,1, "101-00--2",
- "c", "-", "-", 2, 3, 2, 1);
- test_segment_intersection<P>(24, 1,1, 3,3, 0,0, 3,3, "1--00-102",
- "c", "-", "-", 1, 1, 3, 3);
- test_segment_intersection<P>(25, 2,0, 2,4, 2,1, 2,3, "101--0--2",
- "c", "-", "-", 2, 1, 2, 3);
- test_segment_intersection<P>(26, 2,0, 2,4, 2,3, 2,1, "101--0--2",
- "c", "-", "-", 2, 3, 2, 1);
- test_segment_intersection<P>(27, 0,0, 4,4, 1,1, 3,3, "101--0--2",
- "c", "-", "-", 1, 1, 3, 3);
- test_segment_intersection<P>(28, 0,0, 4,4, 3,3, 1,1, "101--0--2",
- "c", "-", "-", 3, 3, 1, 1);
- test_segment_intersection<P>(29, 1,1, 3,3, 0,0, 4,4, "1--0--102",
- "c", "-", "-", 1, 1, 3, 3);
- test_segment_intersection<P>(30, 0,0, 2,2, 2,2, 3,1, "--1-00102",
- "a", "R", "R", 2, 2);
- test_segment_intersection<P>(31, 0,0, 2,2, 2,2, 1,3, "--1-00102",
- "a", "L", "L", 2, 2);
- test_segment_intersection<P>(32, 0,0, 2,2, 1,1, 2,0, "-01--0102",
- "s", "L", "R", 1, 1);
- test_segment_intersection<P>(33, 0,0, 2,2, 1,1, 0,2, "-01--0102",
- "s", "R", "L", 1, 1);
- test_segment_intersection<P>(34, 2,2, 1,3, 0,0, 2,2, "--1-00102",
- "a", "L", "L", 2, 2);
- test_segment_intersection<P>(35, 2,2, 3,1, 0,0, 2,2, "--1-00102",
- "a", "R", "R", 2, 2);
- test_segment_intersection<P>(36, 0,0, 2,2, 0,2, 1,1, "-01--0102",
- "m", "L", "L", 1, 1);
- test_segment_intersection<P>(37, 0,0, 2,2, 2,0, 1,1, "-01--0102",
- "m", "R", "R", 1, 1);
- test_segment_intersection<P>(38, 1,1, 0,2, 0,0, 2,2, "--10-0102",
- "s", "L", "R", 1, 1);
- test_segment_intersection<P>(39, 1,1, 2,0, 0,0, 2,2, "--10-0102",
- "s", "R", "L", 1, 1);
- test_segment_intersection<P>(40, 2,0, 1,1, 0,0, 2,2, "--10-0102",
- "m", "R", "R", 1, 1);
- test_segment_intersection<P>(41, 1,2, 0,2, 2,2, 0,2, "1--00-102",
- "c", "-", "-", 1, 2, 0, 2);
- test_segment_intersection<P>(42, 2,1, 1,1, 2,2, 0,2, "--1--0102",
- "p");
- test_segment_intersection<P>(43, 4,1, 3,1, 2,2, 0,2, "--1--0102",
- "p");
- test_segment_intersection<P>(44, 4,2, 3,2, 2,2, 0,2, "--1--0102",
- "d");
- test_segment_intersection<P>(45, 2,0, 0,2, 0,0, 2,2, "0-1--0102",
- "i", "L", "R", 1, 1);
- // In figure: times 2
- test_segment_intersection<P>(46, 8,2, 4,6, 0,0, 8, 8, "0-1--0102",
- "i", "L", "R", 5, 5);
- }
- int test_main(int, char* [])
- {
- std::cout << "Note this test is out-of-date and either obsolete or should be updated" << std::endl;
- test_all<boost::tuple<double, double> >();
- test_all<bg::model::point<float, 2, bg::cs::cartesian> >();
- test_all<bg::model::point<double, 2, bg::cs::cartesian> >();
- return 0;
- }