ceph/src/boost/libs/geometry/test/algorithms/envelope_expand/test_envelope.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2 // Unit Test
   3
   4 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   5 // Use, modification and distribution is subject to the Boost Software License,
   6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #ifndef BOOST_GEOMETRY_TEST_ENVELOPE_HPP
  10 #define BOOST_GEOMETRY_TEST_ENVELOPE_HPP
  11
  12
  13 #include <boost/variant/variant.hpp>
  14
  15 #include <geometry_test_common.hpp>
  16
  17 #include <boost/geometry/algorithms/envelope.hpp>
  18 #include <boost/geometry/geometries/box.hpp>
  19 #include <boost/geometry/strategies/strategies.hpp>
  20
  21 #include <boost/geometry/io/wkt/read.hpp>
  22
  23
  24 template<typename Box, std::size_t DimensionCount>
  25 struct check_result
  26 {};
  27
  28 template <typename Box>
  29 struct check_result<Box, 2>
  30 {
  31     typedef typename bg::coordinate_type<Box>::type ctype;
  32     typedef typename boost::mpl::if_
  33             <
  34                 boost::is_arithmetic<ctype>,
  35                 double,
  36                 ctype
  37             >::type type;
  38
  39     static void apply(Box const& b, const type& x1, const type& y1, const type& /*z1*/,
  40                 const type& x2, const type& y2, const type& /*z2*/)
  41     {
  42         BOOST_CHECK_CLOSE((bg::get<bg::min_corner, 0>(b)), x1, 0.001);
  43         BOOST_CHECK_CLOSE((bg::get<bg::min_corner, 1>(b)), y1, 0.001);
  44
  45         BOOST_CHECK_CLOSE((bg::get<bg::max_corner, 0>(b)), x2, 0.001);
  46         BOOST_CHECK_CLOSE((bg::get<bg::max_corner, 1>(b)), y2, 0.001);
  47     }
  48 };
  49
  50 template <typename Box>
  51 struct check_result<Box, 3>
  52 {
  53     typedef typename bg::coordinate_type<Box>::type ctype;
  54     typedef typename boost::mpl::if_
  55             <
  56                 boost::is_arithmetic<ctype>,
  57                 double,
  58                 ctype
  59             >::type type;
  60
  61     static void apply(Box const& b, const type& x1, const type& y1, const type& z1,
  62                 const type& x2, const type& y2, const type& z2)
  63     {
  64         BOOST_CHECK_CLOSE((bg::get<bg::min_corner, 0>(b)), x1, 0.001);
  65         BOOST_CHECK_CLOSE((bg::get<bg::min_corner, 1>(b)), y1, 0.001);
  66         BOOST_CHECK_CLOSE((bg::get<bg::min_corner, 2>(b)), z1, 0.001);
  67
  68         BOOST_CHECK_CLOSE((bg::get<bg::max_corner, 0>(b)), x2, 0.001);
  69         BOOST_CHECK_CLOSE((bg::get<bg::max_corner, 1>(b)), y2, 0.001);
  70         BOOST_CHECK_CLOSE((bg::get<bg::max_corner, 2>(b)), z2, 0.001);
  71     }
  72 };
  73
  74
  75 template <typename Geometry, typename T>
  76 void test_envelope(std::string const& wkt,
  77                    const T& x1, const T& x2,
  78                    const T& y1, const T& y2,
  79                    const T& z1 = 0, const T& z2 = 0)
  80 {
  81     typedef bg::model::box<typename bg::point_type<Geometry>::type > box_type;
  82     box_type b;
  83
  84     Geometry geometry;
  85     bg::read_wkt(wkt, geometry);
  86     bg::envelope(geometry, b);
  87     check_result<box_type, bg::dimension<Geometry>::type::value>::apply(b, x1, y1, z1, x2, y2, z2);
  88
  89     boost::variant<Geometry> v(geometry);
  90     bg::envelope(v, b);
  91     check_result<box_type, bg::dimension<Geometry>::type::value>::apply(b, x1, y1, z1, x2, y2, z2);
  92 }
  93
  94
  95 #endif