80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
// Boost.Geometry
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// Copyright (c) 2017 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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#ifndef BOOST_GEOMETRY_TEST_CHECK_VALIDITY_HPP
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#define BOOST_GEOMETRY_TEST_CHECK_VALIDITY_HPP
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#include <boost/foreach.hpp>
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#include <boost/geometry/algorithms/is_valid.hpp>
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template<typename Geometry, typename G1, typename G2>
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inline bool is_output_valid(Geometry const& geometry,
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std::string const& case_id,
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G1 const& g1, G2 const& g2,
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std::string& message)
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{
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bool const result = bg::is_valid(geometry, message);
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if (! result)
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{
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// Check if input was valid. If not, do not report output validity
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if (! bg::is_valid(g1) || ! bg::is_valid(g2))
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{
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std::cout << "WARNING: Input is not considered as valid; "
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<< "this can cause that output is invalid: " << case_id
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<< std::endl;
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return true;
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}
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}
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return result;
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}
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template
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<
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typename Geometry,
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typename Tag = typename bg::tag<Geometry>::type
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>
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struct check_validity
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{
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template <typename G1, typename G2>
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static inline
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bool apply(Geometry const& geometry,
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std::string const& case_id,
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G1 const& g1, G2 const& g2,
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std::string& message)
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{
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return is_output_valid(geometry, case_id, g1, g2, message);
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}
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};
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// Specialization for vector of <geometry> (e.g. rings)
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template <typename Geometry>
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struct check_validity<Geometry, void>
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{
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template <typename G1, typename G2>
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static inline
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bool apply(Geometry const& geometry,
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std::string const& case_id,
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G1 const& g1, G2 const& g2,
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std::string& message)
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{
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typedef typename boost::range_value<Geometry>::type single_type;
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BOOST_FOREACH(single_type const& element, geometry)
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{
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if (! is_output_valid(element, case_id, g1, g2, message))
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{
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return false;
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}
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}
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return true;
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}
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};
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#endif // BOOST_GEOMETRY_TEST_CHECK_VALIDITY_HPP
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