Hello list!

I am having trouble using the equals method on a ring model, maybe I missed something in the documentation. Can you guys give me some directions on how can I fix the error below?

I have the following code (also attached):

using point = bg::model::point<double, 2, bg::cs::geographic<bg::degree>>;

using ring = bg::model::ring<point, true, true>;

ring r1;

r1.push_back(bg::make<point>(0, 0));

r1.push_back(bg::make<point>(0, 1));

r1.push_back(bg::make<point>(1, 1));

r1.push_back(bg::make<point>(1, 0));

r1.push_back(bg::make<point>(0, 0));

ring r2;

r2.push_back(bg::make<point>(0, 0));

r2.push_back(bg::make<point>(0, 1));

r2.push_back(bg::make<point>(1, 1));

r2.push_back(bg::make<point>(1, 0));

r2.push_back(bg::make<point>(0, 0));

// equals with ring doesn't work ;(

std::cout << "ring equals:" << bg::equals(r1, r2) << std::endl;

And it fails with the following message (full log also attached):

n file included from /usr/include/boost/mpl/aux_/na_assert.hpp:23:0,

from /usr/include/boost/mpl/arg.hpp:25,

from /usr/include/boost/mpl/placeholders.hpp:24,

from /usr/include/boost/mpl/apply.hpp:24,

from /usr/include/boost/mpl/for_each.hpp:19,

from /usr/include/boost/test/unit_test_suite_impl.hpp:29,

from /usr/include/boost/test/unit_test_suite.hpp:19,

from /usr/include/boost/test/unit_test.hpp:20,

from /unit-tests/geometry-equals/cxx/geometry-equals.cxx:3:

/usr/include/boost/geometry/strategies/area.hpp: In instantiation of ‘struct boost::geometry::strategy::area::services::default_strategy<boost::geometry::geographic_tag, boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> > >’:

/usr/include/boost/geometry/strategies/default_area_result.hpp:42:17: required from ‘struct boost::geometry::default_area_result<boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true> >’

/usr/include/boost/geometry/algorithms/area.hpp:266:53: required by substitution of ‘template<class Geometry> typename boost::geometry::default_area_result<Geometry>::type boost::geometry::area(const Geometry&) [with Geometry = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>]’

/usr/include/boost/geometry/algorithms/equals.hpp:122:41: required from ‘static bool boost::geometry::detail::equals::area_check::apply(const Geometry1&, const Geometry2&) [with Geometry1 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>; Geometry2 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>]’

/usr/include/boost/geometry/algorithms/equals.hpp:146:55: required from ‘static bool boost::geometry::detail::equals::equals_by_collection<TrivialCheck>::apply(const Geometry1&, const Geometry2&) [with Geometry1 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>; Geometry2 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>; TrivialCheck = boost::geometry::detail::equals::area_check]’

/usr/include/boost/geometry/algorithms/equals.hpp:344:52: required from ‘static bool boost::geometry::resolve_variant::equals<Geometry1, Geometry2>::apply(const Geometry1&, const Geometry2&) [with Geometry1 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>; Geometry2 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>]’

/usr/include/boost/geometry/algorithms/equals.hpp:460:55: required from ‘bool boost::geometry::equals(const Geometry1&, const Geometry2&) [with Geometry1 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>; Geometry2 = boost::geometry::model::ring<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, true, true>]’

/unit-tests/geometry-equals/cxx/geometry-equals.cxx:44:51: required from here

/usr/include/boost/geometry/strategies/area.hpp:37:5: error: no matching function for call to ‘assertion_failed(mpl_::failed************ (boost::geometry::strategy::area::services::default_strategy<boost::geometry::geographic_tag, boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> > >::NOT_IMPLEMENTED_FOR_THIS_POINT_TYPE::************)(mpl_::assert_::types<boost::geometry::model::point<double, 2ul, boost::geometry::cs::geographic<boost::geometry::degree> >, mpl_::na, mpl_::na, mpl_::na>))’

BOOST_MPL_ASSERT_MSG

Thanks for any insight!

Alexandre Pretyman