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  • Committer: Bazaar Package Importer
  • Author(s): Bernd Zeimetz
  • Date: 2009-09-13 00:52:12 UTC
  • mto: (1.2.7 upstream) (0.1.3 upstream) (3.1.7 sid)
  • mto: This revision was merged to the branch mainline in revision 10.
  • Revision ID: james.westby@ubuntu.com-20090913005212-pjecal8zxm07x0fj
Import upstream version 0.14+svnfixes~20090912

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include/ggl/core/coordinate_type.hpp
 
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// Generic Geometry Library
 
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//
 
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// Copyright Bruno Lalande 2008, 2009
 
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// Copyright Barend Gehrels 1995-2009, Geodan Holding B.V. Amsterdam, the Netherlands.
 
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// Use, modification and distribution is subject to the Boost Software License,
 
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 
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// http://www.boost.org/LICENSE_1_0.txt)
 
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#ifndef GGL_CORE_COORDINATE_TYPE_HPP
 
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#define GGL_CORE_COORDINATE_TYPE_HPP
 
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#include <boost/type_traits/remove_const.hpp>
 
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#include <ggl/core/point_type.hpp>
 
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namespace ggl {
 
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namespace traits {
 
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/*!
 
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    \brief Traits class which indicate the coordinate type (double,float,...) of a point
 
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    \ingroup traits
 
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    \par Geometries:
 
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        - point
 
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    \par Specializations should provide:
 
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        - typedef T type; (double,float,int,etc)
 
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*/
 
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template <typename P>
 
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struct coordinate_type {};
 
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} // namespace traits
 
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#ifndef DOXYGEN_NO_DISPATCH
 
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namespace core_dispatch
 
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{
 
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template <typename GeometryTag, typename G>
 
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struct coordinate_type
 
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{
 
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    typedef typename point_type<GeometryTag, G>::type point_type;
 
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    // Call its own specialization on point-tag
 
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    typedef typename coordinate_type<point_tag, point_type>::type type;
 
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};
 
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template <typename P>
 
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struct coordinate_type<point_tag, P>
 
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{
 
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    typedef typename traits::coordinate_type<P>::type type;
 
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};
 
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} // namespace core_dispatch
 
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#endif // DOXYGEN_NO_DISPATCH
 
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/*!
 
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    \brief Meta-function which defines coordinate type (int, float, double, etc) of any geometry
 
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    \ingroup core
 
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*/
 
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template <typename G>
 
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struct coordinate_type
 
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{
 
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    typedef typename boost::remove_const<G>::type ncg;
 
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    typedef typename core_dispatch::coordinate_type
 
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        <
 
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            typename tag<G>::type,
 
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            ncg
 
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        >::type type;
 
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};
 
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} // namespace ggl
 
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#endif // GGL_CORE_COORDINATE_TYPE_HPP