| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| |
| // Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands. |
| // Copyright (c) 2008-2011 Bruno Lalande, Paris, France. |
| // Copyright (c) 2009-2011 Mateusz Loskot, London, UK. |
| |
| // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library |
| // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. |
| |
| // Use, modification and distribution is subject to the Boost Software License, |
| // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #ifndef BOOST_GEOMETRY_CORE_TAGS_HPP |
| #define BOOST_GEOMETRY_CORE_TAGS_HPP |
| |
| |
| namespace boost { namespace geometry |
| { |
| |
| // Tags defining strategies linked to coordinate systems |
| |
| |
| /// Tag indicating Cartesian coordinate system family (cartesian,epsg) |
| struct cartesian_tag {}; |
| |
| /// Tag indicating Spherical polar coordinate system family |
| struct spherical_polar_tag {}; |
| |
| /// Tag indicating Spherical equatorial coordinate system family |
| struct spherical_equatorial_tag {}; |
| |
| /// Tag indicating Geographic coordinate system family (geographic) |
| struct geographic_tag {}; |
| |
| |
| |
| // Tags defining tag hierarchy |
| |
| /// For single-geometries (point, linestring, polygon, box, ring, segment) |
| struct single_tag {}; |
| |
| |
| /// For multiple-geometries (multi_point, multi_linestring, multi_polygon) |
| struct multi_tag {}; |
| |
| /// For point-like types (point, multi_point) |
| struct pointlike_tag {}; |
| |
| /// For linear types (linestring, multi-linestring, segment) |
| struct linear_tag {}; |
| |
| /// For areal types (polygon, multi_polygon, box, ring) |
| struct areal_tag {}; |
| |
| /// For volume types (also box (?), polyhedron) |
| struct volumetric_tag {}; |
| |
| |
| // Tags defining geometry types |
| |
| |
| /// "default" tag |
| struct geometry_not_recognized_tag {}; |
| |
| /// OGC Point identifying tag |
| struct point_tag : single_tag, pointlike_tag {}; |
| |
| /// OGC Linestring identifying tag |
| struct linestring_tag : single_tag, linear_tag {}; |
| |
| /// OGC Polygon identifying tag |
| struct polygon_tag : single_tag, areal_tag {}; |
| |
| /// Convenience (linear) ring identifying tag |
| struct ring_tag : single_tag, areal_tag {}; |
| |
| /// Convenience 2D or 3D box (mbr / aabb) identifying tag |
| struct box_tag : single_tag, areal_tag {}; |
| |
| /// Convenience segment (2-points) identifying tag |
| struct segment_tag : single_tag, linear_tag {}; |
| |
| |
| |
| }} // namespace boost::geometry |
| |
| #endif // BOOST_GEOMETRY_CORE_TAGS_HPP |