/usr/include/mapnik/vertex_adapters.hpp is in libmapnik-dev 3.0.12+ds-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2015 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef MAPNIK_VERTEX_ADAPTERS_HPP
#define MAPNIK_VERTEX_ADAPTERS_HPP
#include <mapnik/geometry.hpp>
#include <mapnik/geometry_types.hpp>
#include <mapnik/vertex.hpp>
namespace mapnik { namespace geometry {
template <typename T>
struct point_vertex_adapter
{
using coord_type = typename point<T>::coord_type;
point_vertex_adapter(point<T> const& pt);
unsigned vertex(coord_type * x, coord_type * y) const;
void rewind(unsigned) const;
geometry_types type () const;
point<T> const& pt_;
mutable bool first_;
};
template <typename T>
struct line_string_vertex_adapter
{
using coord_type = typename point<T>::coord_type;
line_string_vertex_adapter(line_string<T> const& line);
unsigned vertex(coord_type * x, coord_type * y) const;
void rewind(unsigned) const;
geometry_types type () const;
line_string<T> const& line_;
mutable std::size_t current_index_;
const std::size_t end_index_;
};
template <typename T>
struct polygon_vertex_adapter
{
using coord_type = typename point<T>::coord_type;
polygon_vertex_adapter(polygon<T> const& poly);
void rewind(unsigned) const;
unsigned vertex(coord_type * x, coord_type * y) const;
geometry_types type () const;
private:
polygon<T> const& poly_;
mutable std::size_t rings_itr_;
mutable std::size_t rings_end_;
mutable std::size_t current_index_;
mutable std::size_t end_index_;
mutable bool start_loop_;
};
template <typename T>
struct ring_vertex_adapter
{
using coord_type = typename point<T>::coord_type;
ring_vertex_adapter(linear_ring<T> const& ring);
void rewind(unsigned) const;
unsigned vertex(coord_type * x, coord_type * y) const;
geometry_types type () const;
private:
linear_ring<T> const& ring_;
mutable std::size_t current_index_;
mutable std::size_t end_index_;
mutable bool start_loop_;
};
extern template struct MAPNIK_DECL point_vertex_adapter<double>;
extern template struct MAPNIK_DECL line_string_vertex_adapter<double>;
extern template struct MAPNIK_DECL polygon_vertex_adapter<double>;
extern template struct MAPNIK_DECL ring_vertex_adapter<double>;
template <typename T>
struct vertex_adapter_traits {};
template <>
struct vertex_adapter_traits<point<double> >
{
using type = point_vertex_adapter<double>;
};
template <>
struct vertex_adapter_traits<line_string<double> >
{
using type = line_string_vertex_adapter<double>;
};
template <>
struct vertex_adapter_traits<polygon<double> >
{
using type = polygon_vertex_adapter<double>;
};
template <>
struct vertex_adapter_traits<multi_point<double> >
{
using type = point_vertex_adapter<double>;
};
template <>
struct vertex_adapter_traits<multi_line_string<double> >
{
using type = line_string_vertex_adapter<double>;
};
template <>
struct vertex_adapter_traits<multi_polygon<double> >
{
using type = polygon_vertex_adapter<double>;
};
}}
#endif //MAPNIK_VERTEX_ADAPTERS_HPP
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