1[/============================================================================ 2 Boost.Geometry (aka GGL, Generic Geometry Library) 3 4 Copyright (c) 2007-2013 Barend Gehrels, Amsterdam, the Netherlands. 5 Copyright (c) 2008-2013 Bruno Lalande, Paris, France. 6 Copyright (c) 2009-2013 Mateusz Loskot, London, UK. 7 8 Use, modification and distribution is subject to the Boost Software License, 9 Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 10 http://www.boost.org/LICENSE_1_0.txt) 11=============================================================================/] 12 13 14[/ Generated by doxygen_xml2qbk 1.1.1, don't change, will be overwritten automatically] 15[/ Generated from doxy/doxygen_output/xml/structboost_1_1geometry_1_1tag.xml] 16[section:tag tag] 17 18'''<indexterm><primary>tag</primary></indexterm>''' 19Metafunction defining [*type] as the tag of the specified geometry type. 20 21[heading Description] 22With Boost.Geometry, tags are the driving force of the tag dispatching mechanism. The tag metafunction is therefore used in every free function. 23 24[heading Synopsis] 25``template<typename Geometry> 26struct tag 27{ 28 // ... 29}; 30`` 31 32[heading Template parameter(s)] 33[table 34[[Parameter] [Description]] 35[[typename Geometry] [Any type fulfilling a Geometry Concept]] 36] 37 38[heading Header] 39Either 40 41`#include <boost/geometry.hpp>` 42 43 44Or 45 46`#include <boost/geometry/core/tag.hpp>` 47 48[include reference/core/tag.qbk] 49 50[endsect] 51 52