mirror of
https://github.com/boostorg/geometry.git
synced 2026-02-12 12:12:10 +00:00
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library) test file
|
|
//
|
|
// Copyright Barend Gehrels 2007-2009, Geodan, Amsterdam, the Netherlands
|
|
// Copyright Bruno Lalande 2008, 2009
|
|
// Use, modification and distribution is subject to the Boost Software License,
|
|
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
#include <sstream>
|
|
#include <string>
|
|
|
|
#include <ggl_test_common.hpp>
|
|
|
|
#include <boost/geometry/iterators/ever_circling_iterator.hpp>
|
|
|
|
#include <boost/geometry/core/coordinate_type.hpp>
|
|
#include <boost/geometry/extensions/gis/io/wkt/read_wkt.hpp>
|
|
#include <boost/geometry/geometries/cartesian2d.hpp>
|
|
|
|
template <typename G>
|
|
void test_geometry(const std::string& wkt)
|
|
{
|
|
G geo;
|
|
boost::geometry::read_wkt(wkt, geo);
|
|
typedef typename boost::range_const_iterator<G>::type iterator_type;
|
|
|
|
|
|
// Run 3 times through the geometry
|
|
int n = boost::size(geo) * 3;
|
|
|
|
{
|
|
std::ostringstream out;
|
|
boost::geometry::ever_circling_iterator<iterator_type> it(boost::begin(geo), boost::end(geo));
|
|
for (int i = 0; i < n; ++i, ++it)
|
|
{
|
|
out << boost::geometry::get<0>(*it);
|
|
}
|
|
BOOST_CHECK_EQUAL(out.str(), "123451234512345");
|
|
}
|
|
|
|
{
|
|
std::ostringstream out;
|
|
// Start somewhere
|
|
boost::geometry::ever_circling_iterator<iterator_type> it(
|
|
boost::begin(geo), boost::end(geo), boost::begin(geo) + 1);
|
|
for (int i = 0; i < n; ++i, ++it)
|
|
{
|
|
out << boost::geometry::get<0>(*it);
|
|
}
|
|
BOOST_CHECK_EQUAL(out.str(), "234512345123451");
|
|
}
|
|
|
|
{
|
|
std::ostringstream out;
|
|
|
|
// Navigate to somewhere
|
|
boost::geometry::ever_circling_iterator<iterator_type> it(boost::begin(geo), boost::end(geo));
|
|
for (int i = 0; i < n; ++i, ++it)
|
|
{
|
|
const int m = boost::size(geo);
|
|
it.moveto(boost::begin(geo) + m - (i % m) - 1);
|
|
out << boost::geometry::get<0>(*it);
|
|
}
|
|
BOOST_CHECK_EQUAL(out.str(), "543215432154321");
|
|
}
|
|
|
|
}
|
|
|
|
template <typename P>
|
|
void test_all()
|
|
{
|
|
test_geometry<boost::geometry::linestring<P> >("linestring(1 1,2 2,3 3,4 4,5 5)");
|
|
}
|
|
|
|
int test_main(int, char* [])
|
|
{
|
|
test_all<boost::geometry::point_2d>();
|
|
|
|
return 0;
|
|
}
|