80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Unit Test
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 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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#include <geometry_test_common.hpp>
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#include <boost/geometry/views/detail/range_type.hpp>
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#include <boost/geometry/algorithms/detail/as_range.hpp>
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#include <boost/geometry/core/cs.hpp>
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#include <boost/geometry/geometries/geometries.hpp>
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#include <boost/geometry/io/wkt/read.hpp>
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template <int D, typename Range>
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double sum(Range const& range)
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{
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double s = 0.0;
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for (typename boost::range_const_iterator<Range>::type it = boost::begin(range);
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it != boost::end(range); ++it)
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{
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s += bg::get<D>(*it);
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}
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return s;
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}
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template <typename G>
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void test_geometry(std::string const& wkt, double expected_x, double expected_y)
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{
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G geometry;
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// Declare a range-type, compatible with boost::range,
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// such that range_iterator etc could be called
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typedef typename bg::detail::range_type<G>::type range_type;
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bg::read_wkt(wkt, geometry);
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double s = sum<0>(bg::detail::as_range<range_type>(geometry));
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BOOST_CHECK_CLOSE(s, expected_x, 0.001);
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s = sum<1>(bg::detail::as_range<range_type>(geometry));
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BOOST_CHECK_CLOSE(s, expected_y, 0.001);
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}
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template <typename P>
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void test_all()
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{
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// As-range utility should consider a geometry as a range, so
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// linestring stays linestring
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test_geometry<bg::model::linestring<P> >("LINESTRING(1 2,3 4)", 4, 6);
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// polygon will only be outer-ring
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test_geometry<bg::model::polygon<P> >("POLYGON((1 2,3 4))", 4, 6);
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test_geometry<bg::model::polygon<P> >("POLYGON((1 2,3 4),(5 6,7 8,9 10))", 4, 6);
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// the utility is useful for:
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// - convex hull (holes do not count)
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// - envelope (idem)
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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::point<double, 2, bg::cs::cartesian> >();
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return 0;
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}
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