70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
#ifndef GIS__LENGTH_FUNCTOR_H_INCLUDED
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#define GIS__LENGTH_FUNCTOR_H_INCLUDED
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// Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License, version 2.0,
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// as published by the Free Software Foundation.
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//
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// This program is also distributed with certain software (including
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// but not limited to OpenSSL) that is licensed under separate terms,
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// as designated in a particular file or component or in included license
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// documentation. The authors of MySQL hereby grant you an additional
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// permission to link the program and your derivative works with the
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// separately licensed software that they have included with MySQL.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License, version 2.0, for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/// @file
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///
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/// This file declares the length functor interface.
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///
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/// The functor is not intended for use directly by MySQL code. It should be
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/// used indirectly through the gis::length() function.
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///
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/// @see gis::length
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#include <memory> // std::unique_ptr
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#include <boost/geometry.hpp>
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#include "sql/gis/functor.h"
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#include "sql/gis/geometries.h"
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namespace gis {
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/// Length functor that calls Boost.Geometry with the correct parameter types.
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///
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/// The functor throws exceptions and is therefore only intended used to
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/// implement length or other geographic functions. It should not be used
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/// directly by other MySQL code.
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class Length : public Unary_functor<double> {
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private:
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std::unique_ptr<boost::geometry::strategy::distance::andoyer<
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boost::geometry::srs::spheroid<double>>>
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m_geographic_strategy;
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public:
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Length(double major, double minor);
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double operator()(const Geometry &g1) const;
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double eval(const Geometry &g1) const;
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double eval(const Geographic_linestring &g1) const;
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double eval(const Cartesian_linestring &g1) const;
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double eval(const Geographic_multilinestring &g1) const;
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double eval(const Cartesian_multilinestring &g1) const;
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};
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} // namespace gis
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#endif // GIS__LENGTH_FUNCTOR_H_INCLUDED
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