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127 lines
5.3 KiB
C++
127 lines
5.3 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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//
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// Copyright (c) 2007-2011 Barend Gehrels, 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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#include <algorithms/test_within.hpp>
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#include <boost/geometry/geometries/geometries.hpp>
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#include <boost/geometry/geometries/point_xy.hpp>
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template <typename P>
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void test_all()
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{
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// trivial case
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test_ring<P>("POINT(1 1)", "POLYGON((0 0,0 2,2 2,2 0,0 0))", true, false);
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// on border/corner
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test_ring<P>("POINT(0 0)", "POLYGON((0 0,0 2,2 2,2 0,0 0))", false, true);
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test_ring<P>("POINT(0 1)", "POLYGON((0 0,0 2,2 2,2 0,0 0))", false, true);
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// aligned to segment/vertex
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test_ring<P>("POINT(1 1)", "POLYGON((0 0,0 3,3 3,3 1,2 1,2 0,0 0))", true, false);
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test_ring<P>("POINT(1 1)", "POLYGON((0 0,0 3,4 3,3 1,2 2,2 0,0 0))", true, false);
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// same polygon, but point on border
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test_ring<P>("POINT(3 3)", "POLYGON((0 0,0 3,3 3,3 1,2 1,2 0,0 0))", false, true);
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test_ring<P>("POINT(3 3)", "POLYGON((0 0,0 3,4 3,3 1,2 2,2 0,0 0))", false, true);
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// holes
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test_geometry<P, bg::model::polygon<P> >("POINT(2 2)",
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"POLYGON((0 0,0 4,4 4,4 0,0 0),(1 1,3 1,3 3,1 3,1 1))", false);
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typedef bg::model::box<P> box_type;
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test_geometry<P, box_type>("POINT(1 1)", "BOX(0 0,2 2)", true);
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test_geometry<box_type, box_type>("BOX(1 1,2 2)", "BOX(0 0,3 3)", true);
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test_geometry<box_type, box_type>("BOX(0 0,3 3)", "BOX(1 1,2 2)", false);
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// Mixed point types
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test_geometry
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<
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bg::model::d2::point_xy<float>,
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bg::model::polygon<P>
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>("POINT(1 1)", "POLYGON((0 0,0 2,2 2,2 0,0 0))", true);
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// Real-life problem (solved now), point is in the middle, 409623 is also a coordinate
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// on the border, has been wrong in the past (2009)
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test_ring<P>("POINT(146383 409623)",
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"POLYGON((146351 410597,146521 410659,147906 410363,148088 410420"
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",148175 410296,148281 409750,148215 409623,148154 409666,148154 409666"
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",148130 409625,148035 409626,148035 409626,148008 409544,147963 409510"
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",147993 409457,147961 409352,147261 408687,147008 408586,145714 408840"
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",145001 409033,144486 409066,144616 409308,145023 410286,145254 410488"
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",145618 410612,145618 410612,146015 410565,146190 410545,146351 410597))",
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true, false);
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}
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template <typename Point>
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void test_spherical()
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{
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typedef typename bg::coordinate_type<Point>::type ct;
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bg::model::polygon<Point> wrangel;
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// SQL Server check (no geography::STWithin, so check with intersection trick)
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/*
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with q as (
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select geography::STGeomFromText('POLYGON((-178.569 71.5641,-179.034 71.5977,-179.305 71.5514,-179.629 71.5772,-180 71.5358,179.53 71.4383,178.872 71.2175,178.618 71.0355,178.791 70.7964,179.273 70.8886,179.678 70.8955,-180 70.9972,-179.274 70.9078,-178.819 70.98,-177.939 71.0375,-177.62 71.1166,-177.439 71.2269,-177.503 71.2775,-177.833 71.3461,-178.018 71.4497,-178.569 71.5641))',4326) as wrangel
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)
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select wrangel.STArea()/1000000.0
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,geography::STGeomFromText('POINT(-179.3 71.27)',4326).STIntersection(wrangel).STAsText() as workaround_within_1
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,geography::STGeomFromText('POINT(-179.9 70.95)',4326).STIntersection(wrangel).STAsText() as workaround_within_2
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,geography::STGeomFromText('POINT(179.9 70.95)',4326).STIntersection(wrangel).STAsText() as workaround_within_3
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from q
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-> 7669.10402181435 POINT (-179.3 71.27) GEOMETRYCOLLECTION EMPTY GEOMETRYCOLLECTION EMPTY
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PostGIS knows Within for Geography neither, and the intersection trick gives the same result
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*/
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bg::read_wkt("POLYGON((-178.568604 71.564148,-178.017548 71.449692,-177.833313 71.3461,-177.502838 71.277466 ,-177.439453 71.226929,-177.620026 71.116638,-177.9389 71.037491,-178.8186 70.979965,-179.274445 70.907761,-180 70.9972,179.678314 70.895538,179.272766 70.888596,178.791016 70.7964,178.617737 71.035538,178.872192 71.217484,179.530273 71.4383 ,-180 71.535843 ,-179.628601 71.577194,-179.305298 71.551361,-179.03421 71.597748,-178.568604 71.564148))", wrangel);
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bool within = bg::within(Point(-179.3, 71.27), wrangel);
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BOOST_CHECK_EQUAL(within, true);
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within = bg::within(Point(-179.9, 70.95), wrangel);
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BOOST_CHECK_EQUAL(within, false);
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within = bg::within(Point(179.9, 70.95), wrangel);
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BOOST_CHECK_EQUAL(within, false);
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// Test using great circle mapper
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// http://www.gcmap.com/mapui?P=5E52N-9E53N-7E50N-5E52N,7E52.5N,8E51.5N,6E51N
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bg::model::polygon<Point> triangle;
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bg::read_wkt("POLYGON((5 52,9 53,7 50,5 52))", triangle);
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BOOST_CHECK_EQUAL(bg::within(Point(7, 52.5), triangle), true);
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BOOST_CHECK_EQUAL(bg::within(Point(8.0, 51.5), triangle), false);
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BOOST_CHECK_EQUAL(bg::within(Point(6.0, 51.0), triangle), false);
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}
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int test_main( int , char* [] )
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{
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test_all<bg::model::d2::point_xy<int> >();
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test_all<bg::model::d2::point_xy<double> >();
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test_spherical<bg::model::point<double, 2, bg::cs::spherical_equatorial<bg::degree> > >();
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#if defined(HAVE_TTMATH)
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test_all<bg::model::d2::point_xy<ttmath_big> >();
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test_spherical<bg::model::point<ttmath_big, 2, bg::cs::spherical_equatorial<bg::degree> > >();
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#endif
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return 0;
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}
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