ceph/src/boost/libs/geometry/test/views/box_view.cpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2 // Unit Test
   3
   4 // Copyright (c) 2010-2012 Barend Gehrels, Amsterdam, the Netherlands.
   5
   6 // Use, modification and distribution is subject to the Boost Software License,
   7 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt)
   9
  10 #include <algorithm>
  11 #include <iterator>
  12 #include <sstream>
  13 #include <string>
  14
  15 #include <geometry_test_common.hpp>
  16
  17 #include <boost/geometry/geometries/geometries.hpp>
  18 #include <boost/geometry/geometries/point_xy.hpp>
  19 #include <boost/geometry/views/box_view.hpp>
  20 #include <boost/geometry/io/wkt/read.hpp>
  21
  22
  23
  24 template <typename Box, bool Reverse>
  25 void test_geometry(std::string const& wkt, std::string const& expected,
  26             bg::order_selector expected_order)
  27 {
  28
  29     Box box;
  30     bg::read_wkt(wkt, box);
  31
  32     typedef bg::box_view<Box, Reverse> view_type;
  33     view_type range(box);
  34
  35     {
  36         std::ostringstream out;
  37         for (typename boost::range_iterator<view_type>::type it = boost::begin(range);
  38             it != boost::end(range); ++it)
  39         {
  40             out << " " << bg::get<0>(*it) << bg::get<1>(*it);
  41         }
  42         BOOST_CHECK_EQUAL(out.str(), expected);
  43     }
  44
  45     {
  46         // Check forward/backward behaviour
  47         typename boost::range_iterator<view_type>::type it = boost::begin(range);
  48         it++;
  49         it--;
  50         // Not verified further, same as segment
  51     }
  52
  53     {
  54         // Check random access behaviour
  55         int const n = boost::size(range);
  56         BOOST_CHECK_EQUAL(n, 5);
  57     }
  58
  59     // Check Boost.Range concept
  60     BOOST_CONCEPT_ASSERT( (boost::RandomAccessRangeConcept<view_type>) );
  61
  62     // Check order
  63     bg::order_selector order = bg::point_order<view_type>::value;
  64     BOOST_CHECK_EQUAL(order, expected_order);
  65 }
  66
  67
  68 template <typename P>
  69 void test_all()
  70 {
  71     test_geometry<bg::model::box<P>, true> ("polygon((1 1,2 2))", " 11 12 22 21 11", bg::clockwise);
  72     test_geometry<bg::model::box<P>, false>("polygon((1 1,2 2))", " 11 21 22 12 11", bg::counterclockwise);
  73     test_geometry<bg::model::box<P>, true> ("polygon((3 3,5 5))", " 33 35 55 53 33", bg::clockwise);
  74 }
  75
  76
  77 int test_main(int, char* [])
  78 {
  79     test_all<bg::model::d2::point_xy<double> >();
  80     return 0;
  81 }