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/group__is__empty.xml] 16[section:is_empty is_empty] 17 18'''<indexterm><primary>is_empty</primary></indexterm>''' 19Checks if a geometry is the empty set. 20 21[heading Synopsis] 22``template<typename Geometry> 23bool is_empty(Geometry const & geometry)`` 24 25[heading Parameters] 26 27[table 28[[Type] [Concept] [Name] [Description] ] 29[[Geometry const &] [Any type fulfilling a Geometry Concept ] [geometry] [A model of the specified concept ]] 30] 31 32 33[heading Returns] 34Returns true if the geometry is the empty set 35 36[heading Header] 37Either 38 39`#include <boost/geometry.hpp>` 40 41 42Or 43 44`#include <boost/geometry/algorithms/is_empty.hpp>` 45 46[include reference/algorithms/is_empty.qbk] 47 48 49[endsect] 50 51