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[algorithms][is_valid] add the following free functions:

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* bool is_valid(geometry, string)
* bool is_valid(geometry, visitor)
* bool is_valid(geometry, failure value)
This commit is contained in:
Menelaos Karavelas
2015-02-24 15:28:03 +02:00
parent f70d234426
commit f646ee786c
1 changed files with 49 additions and 4 deletions
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53
include/boost/geometry/algorithms/detail/is_valid/interface.hpp
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@@ -10,6 +10,9 @@
#ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_INTERFACE_HPP
#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_IS_VALID_INTERFACE_HPP
#include <sstream>
#include <string>
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
#include <boost/variant/variant_fwd.hpp>
@@ -18,6 +21,8 @@
#include <boost/geometry/algorithms/dispatch/is_valid.hpp>
#include <boost/geometry/policies/is_valid/default_policy.hpp>
#include <boost/geometry/policies/is_valid/failing_reason_policy.hpp>
#include <boost/geometry/policies/is_valid/failure_type_policy.hpp>
namespace boost { namespace geometry
@@ -67,6 +72,14 @@ struct is_valid<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
} // namespace resolve_variant
// Undocumented for now
template <typename Geometry, typename VisitPolicy>
inline bool is_valid(Geometry const& geometry, VisitPolicy& visitor)
{
return resolve_variant::is_valid<Geometry>::apply(geometry, visitor);
}
/*!
\brief \brief_check{is valid (in the OGC sense)}
\ingroup is_valid
@@ -81,10 +94,42 @@ template <typename Geometry>
inline bool is_valid(Geometry const& geometry)
{
is_valid_default_policy<> policy_visitor;
return resolve_variant::is_valid
<
Geometry
>::apply(geometry, policy_visitor);
return is_valid(geometry, policy_visitor);
}
// Undocumented for now
template <typename Geometry>
inline bool is_valid(Geometry const& geometry, validity_failure_type& failure)
{
failure_type_policy<> policy_visitor;
bool result = is_valid(geometry, policy_visitor);
failure = policy_visitor.failure();
return result;
}
/*!
\brief \brief_check{is valid (in the OGC sense)}
\ingroup is_valid
\tparam Geometry \tparam_geometry
\param geometry \param_geometry
\param message A string containing a message stating if the geometry
is valid or not, and if not valid a reason why
\return \return_check{is valid (in the OGC sense), with one exception:
multi-geometries with no elements are considered valid}
\qbk{distinguish,with message}
\qbk{[include reference/algorithms/is_valid_with_message.qbk]}
*/
template <typename Geometry>
inline bool is_valid(Geometry const& geometry, std::string& message)
{
std::ostringstream stream;
failing_reason_policy<> policy_visitor(stream);
bool result = is_valid(geometry, policy_visitor);
message = stream.str();
return result;
}