From 60f38780b3348b87c38d5cc29943e120e511b39f Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Fri, 20 Feb 2015 17:43:07 +0100
Subject: [PATCH] boost.geometry <-- mapnik-geometry adapters

---
 include/mapnik/geometry_adapters.hpp | 254 +++++++++++++++++++++++++++
 1 file changed, 254 insertions(+)
 create mode 100644 include/mapnik/geometry_adapters.hpp

diff --git a/include/mapnik/geometry_adapters.hpp b/include/mapnik/geometry_adapters.hpp
new file mode 100644
index 000000000..959d991e1
--- /dev/null
+++ b/include/mapnik/geometry_adapters.hpp
@@ -0,0 +1,254 @@
+/*****************************************************************************
+ *
+ * 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_ADAPTERS_HPP
+#define MAPNIK_GEOMETRY_ADAPTERS_HPP
+
+#include <boost/geometry.hpp>
+#include <boost/geometry/geometries/register/point.hpp>
+#include <boost/geometry/geometries/register/linestring.hpp>
+#include <boost/geometry/geometries/register/ring.hpp>
+#include <boost/range.hpp>
+#include <boost/range/iterator_range_core.hpp>
+#include <boost/geometry/core/mutable_range.hpp>
+#include <boost/geometry/core/tag.hpp>
+#include <boost/geometry/core/tags.hpp>
+
+// register point
+BOOST_GEOMETRY_REGISTER_POINT_2D (mapnik::new_geometry::point, double, cs::cartesian, x, y)
+// ring
+BOOST_GEOMETRY_REGISTER_RING(mapnik::new_geometry::linear_ring)
+
+namespace boost {
+
+template <>
+struct range_iterator<mapnik::new_geometry::line_string>
+{
+    using type = mapnik::new_geometry::line_string::iterator_type;
+};
+
+template <>
+struct range_const_iterator<mapnik::new_geometry::line_string>
+{
+    using type = mapnik::new_geometry::line_string::const_iterator_type;
+};
+
+inline mapnik::new_geometry::line_string::iterator_type
+range_begin(mapnik::new_geometry::line_string & line) {return line.begin();}
+
+inline mapnik::new_geometry::line_string::iterator_type
+range_end(mapnik::new_geometry::line_string & line) {return line.end();}
+
+inline mapnik::new_geometry::line_string::const_iterator_type
+range_begin(mapnik::new_geometry::line_string const& line) {return line.begin();}
+
+inline mapnik::new_geometry::line_string::const_iterator_type
+range_end(mapnik::new_geometry::line_string const& line) {return line.end();}
+
+
+// register polygon
+namespace geometry { namespace traits {
+
+template<> struct tag<mapnik::new_geometry::bounding_box> { using type = box_tag; };
+
+template<> struct point_type<mapnik::new_geometry::bounding_box> { using type = mapnik::new_geometry::point; };
+
+
+template <>
+struct indexed_access<mapnik::new_geometry::bounding_box, min_corner, 0>
+{
+    static inline double get(mapnik::new_geometry::bounding_box const& b) { return b.p0.x;}
+    static inline void set(mapnik::new_geometry::bounding_box& b, double value) { b.p0.x = value; }
+};
+
+template <>
+struct indexed_access<mapnik::new_geometry::bounding_box, min_corner, 1>
+{
+    static inline double get(mapnik::new_geometry::bounding_box const& b) { return b.p0.y;}
+    static inline void set(mapnik::new_geometry::bounding_box& b, double value) { b.p0.y = value; }
+};
+
+template <>
+struct indexed_access<mapnik::new_geometry::bounding_box, max_corner, 0>
+{
+    static inline double get(mapnik::new_geometry::bounding_box const& b) { return b.p1.x;}
+    static inline void set(mapnik::new_geometry::bounding_box& b, double value) { b.p1.x = value; }
+};
+
+template <>
+struct indexed_access<mapnik::new_geometry::bounding_box, max_corner, 1>
+{
+    static inline double get(mapnik::new_geometry::bounding_box const& b) { return b.p1.y;}
+    static inline void set(mapnik::new_geometry::bounding_box& b, double value) { b.p1.y = value; }
+};
+
+template<>
+struct tag<mapnik::new_geometry::line_string>
+{
+    using type = ring_tag;
+};
+
+// polygon 2
+template<> struct tag<mapnik::new_geometry::polygon2>
+{
+    using type = polygon_tag;
+};
+
+// ring
+template<> struct ring_const_type<mapnik::new_geometry::polygon2>
+{
+    using type =  mapnik::new_geometry::line_string::cont_type const&;
+};
+
+template<> struct ring_mutable_type<mapnik::new_geometry::polygon2>
+{
+    using type = mapnik::new_geometry::line_string::cont_type&;
+};
+
+// interior
+template<> struct interior_const_type<mapnik::new_geometry::polygon2>
+{
+    using rings_type = std::vector<mapnik::new_geometry::line_string::cont_type>;
+    using type = boost::iterator_range<rings_type::const_iterator> const;
+};
+
+template<> struct interior_mutable_type<mapnik::new_geometry::polygon2>
+{
+    using rings_type = std::vector<mapnik::new_geometry::line_string::cont_type>;
+    using type = boost::iterator_range<rings_type::iterator>;
+};
+
+// exterior
+template<>
+struct exterior_ring<mapnik::new_geometry::polygon2>
+{
+    static mapnik::new_geometry::line_string::cont_type& get(mapnik::new_geometry::polygon2 & p)
+    {
+        return p.rings.front();
+    }
+
+    static mapnik::new_geometry::line_string::cont_type const& get(mapnik::new_geometry::polygon2 const& p)
+    {
+        return p.rings.front();
+    }
+};
+
+template<>
+struct interior_rings<mapnik::new_geometry::polygon2>
+{
+    using ring_iterator = std::vector<mapnik::new_geometry::line_string::cont_type>::iterator;
+    using const_ring_iterator = std::vector<mapnik::new_geometry::line_string::cont_type>::const_iterator;
+    using holes_type = boost::iterator_range<ring_iterator>;
+    using const_holes_type = boost::iterator_range<const_ring_iterator>;
+    static holes_type get(mapnik::new_geometry::polygon2 & p)
+    {
+        return boost::make_iterator_range(p.rings.begin() + 1, p.rings.end());
+    }
+
+    static const_holes_type get(mapnik::new_geometry::polygon2 const& p)
+    {
+       return boost::make_iterator_range(p.rings.begin() + 1, p.rings.end());
+    }
+};
+
+
+// mapnik::new_geometry::polygon3
+
+template<> struct tag<mapnik::new_geometry::polygon3>
+{
+    using type = polygon_tag;
+};
+
+
+template<> struct tag<mapnik::new_geometry::multi_point>
+{
+    using type = multi_point_tag;
+};
+
+template<> struct tag<mapnik::new_geometry::multi_line_string>
+{
+    using type = multi_linestring_tag;
+};
+
+
+template<> struct tag<mapnik::new_geometry::multi_polygon>
+{
+    using type = multi_polygon_tag;
+};
+
+// ring
+template<> struct ring_const_type<mapnik::new_geometry::polygon3>
+{
+    using type =  mapnik::new_geometry::linear_ring const&;
+};
+
+template<> struct ring_mutable_type<mapnik::new_geometry::polygon3>
+{
+    using type = mapnik::new_geometry::linear_ring&;
+};
+
+// interior
+template<> struct interior_const_type<mapnik::new_geometry::polygon3>
+{
+    using type = std::vector<mapnik::new_geometry::linear_ring> const&;
+};
+
+template<> struct interior_mutable_type<mapnik::new_geometry::polygon3>
+{
+    using type = std::vector<mapnik::new_geometry::linear_ring>&;
+};
+
+// exterior
+template<>
+struct exterior_ring<mapnik::new_geometry::polygon3>
+{
+    static mapnik::new_geometry::linear_ring& get(mapnik::new_geometry::polygon3 & p)
+    {
+        return p.exterior_ring;
+    }
+
+    static mapnik::new_geometry::linear_ring const& get(mapnik::new_geometry::polygon3 const& p)
+    {
+        return p.exterior_ring;
+    }
+};
+
+template<>
+struct interior_rings<mapnik::new_geometry::polygon3>
+{
+    using holes_type = std::vector<mapnik::new_geometry::linear_ring>;
+    static holes_type&  get(mapnik::new_geometry::polygon3 & p)
+    {
+        return p.interior_rings;
+    }
+
+    static holes_type const& get(mapnik::new_geometry::polygon3 const& p)
+    {
+        return p.interior_rings;
+    }
+};
+
+
+}}}
+
+
+#endif //MAPNIK_GEOMETRY_ADAPTERS_HPP