/usr/include/mapnik/geometry.hpp is in libmapnik-dev 3.0.9+ds-1.
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_GEOMETRY_HPP
#define MAPNIK_GEOMETRY_HPP
#include <mapnik/util/variant.hpp>
#include <mapnik/coord.hpp>
#include <vector>
#include <type_traits>
#include <cstddef>
namespace mapnik { namespace geometry {
template <typename T>
struct point
{
using value_type = T;
point() {}
point(T x_, T y_)
: x(x_), y(y_)
{}
// temp - remove when geometry is templated on value_type
point(mapnik::coord<double, 2> const& c)
: x(c.x), y(c.y) {}
point(point const& other) = default;
point(point && other) noexcept = default;
point & operator=(point const& other) = default;
friend inline bool operator== (point<T> const& a, point<T> const& b)
{
return a.x == b.x && a.y == b.y;
}
friend inline bool operator!= (point<T> const& a, point <T> const& b)
{
return a.x != b.x || a.y != b.y;
}
value_type x;
value_type y;
};
template <typename T>
struct line_string : std::vector<point<T> >
{
line_string() = default;
line_string (std::size_t size)
: std::vector<point<T> >(size) {}
line_string (line_string && other) = default ;
line_string& operator=(line_string &&) = default;
line_string (line_string const& ) = default;
line_string& operator=(line_string const&) = default;
inline std::size_t num_points() const { return std::vector<point<T>>::size(); }
inline void add_coord(T x, T y) { std::vector<point<T>>::template emplace_back(x,y);}
};
template <typename T>
struct linear_ring : line_string<T>
{
linear_ring() = default;
linear_ring(std::size_t size)
: line_string<T>(size) {}
linear_ring (linear_ring && other) = default ;
linear_ring& operator=(linear_ring &&) = default;
linear_ring(line_string<T> && other)
: line_string<T>(other) {}
linear_ring (linear_ring const& ) = default;
linear_ring(line_string<T> const& other)
: line_string<T>(other) {}
linear_ring& operator=(linear_ring const&) = default;
};
template <typename T>
using rings_container = std::vector<linear_ring<T>>;
template <typename T, template <typename> class InteriorRings = rings_container>
struct polygon
{
linear_ring<T> exterior_ring;
using rings_container = InteriorRings<T>;
rings_container interior_rings;
polygon() = default;
inline void set_exterior_ring(linear_ring<T> && ring)
{
exterior_ring = std::move(ring);
}
inline void add_hole(linear_ring<T> && ring)
{
interior_rings.emplace_back(std::move(ring));
}
inline bool empty() const { return exterior_ring.empty(); }
inline std::size_t num_rings() const
{
return 1 + interior_rings.size();
}
};
template <typename T>
struct multi_point : line_string<T> {};
template <typename T>
struct multi_line_string : std::vector<line_string<T>> {};
template <typename T>
struct multi_polygon : std::vector<polygon<T>> {};
template <typename T>
struct geometry_collection;
struct geometry_empty {};
template <typename T>
using geometry_base = mapnik::util::variant<geometry_empty,
point<T>,
line_string<T>,
polygon<T>,
multi_point<T>,
multi_line_string<T>,
multi_polygon<T>,
mapnik::util::recursive_wrapper<geometry_collection<T> > >;
template <typename T>
struct geometry : geometry_base<T>
{
using value_type = T;
geometry()
: geometry_base<T>() {} // empty
template <typename G>
geometry(G && geom)
: geometry_base<T>(std::forward<G>(geom)) {}
};
template <typename T>
struct geometry_collection : std::vector<geometry<T>> {};
}}
#endif //MAPNIK_GEOMETRY_HPP
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