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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Unit Test
// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
// 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 <geometry_test_common.hpp>
#include <boost/geometry/algorithms/assign.hpp>
#include <boost/geometry/strategies/spherical/side_by_cross_track.hpp>
//#include <boost/geometry/strategies/spherical/side_via_plane.hpp>
#include <boost/geometry/strategies/spherical/ssf.hpp>
#include <boost/geometry/strategies/cartesian/side_by_triangle.hpp>
#include <boost/geometry/core/cs.hpp>
#include <boost/geometry/geometries/point.hpp>
#include <boost/geometry/geometries/segment.hpp>
namespace boost { namespace geometry {
template <typename Vector, typename Point1, typename Point2>
static inline Vector create_vector(Point1 const& p1, Point2 const& p2)
{
Vector v;
convert(p1, v);
subtract_point(v, p2);
return v;
}
}}
inline char side_char(int side)
{
return side == 1 ? 'L'
: side == -1 ? 'R'
: '-'
;
}
template <typename Point>
void test_side1(std::string const& case_id, Point const& p1, Point const& p2, Point const& p3,
int expected, int expected_cartesian)
{
// std::cout << case_id << ": ";
//int s = bg::strategy::side::side_via_plane<>::apply(p1, p2, p3);
int side_ssf = bg::strategy::side::spherical_side_formula<>::apply(p1, p2, p3);
//int side2 = bg::strategy::side::side_via_plane<>::apply(p1, p2, p3);
int side_ct = bg::strategy::side::side_by_cross_track<>::apply(p1, p2, p3);
typedef bg::strategy::side::services::default_strategy<bg::cartesian_tag>::type cartesian_strategy;
int side_cart = cartesian_strategy::apply(p1, p2, p3);
BOOST_CHECK_EQUAL(side_ssf, expected);
BOOST_CHECK_EQUAL(side_ct, expected);
BOOST_CHECK_EQUAL(side_cart, expected_cartesian);
/*
std::cout
<< "exp: " << side_char(expected)
<< " ssf: " << side_char(side1)
<< " pln: " << side_char(side2)
<< " ct: " << side_char(side3)
//<< " def: " << side_char(side4)
<< " cart: " << side_char(side5)
<< std::endl;
*/
}
template <typename Point>
void test_side(std::string const& case_id, Point const& p1, Point const& p2, Point const& p3,
int expected, int expected_cartesian = -999)
{
if (expected_cartesian == -999)
{
expected_cartesian = expected;
}
test_side1(case_id, p1, p2, p3, expected, expected_cartesian);
test_side1(case_id, p2, p1, p3, -expected, -expected_cartesian);
}
template <typename Point>
void test_all()
{
Point amsterdam(5.9, 52.4);
Point barcelona(2.0, 41.0);
Point paris(2.0, 48.0);
Point milan(7.0, 45.0);
//goto wrong;
test_side<Point>("bp-m", barcelona, paris, milan, -1);
test_side<Point>("bm-p", barcelona, milan, paris, 1);
test_side<Point>("mp-b", milan, paris, barcelona, 1);
test_side<Point>("am-p", amsterdam, milan, paris, -1);
test_side<Point>("pm-a", paris, milan, amsterdam, 1);
// http://www.gcmap.com/mapui?P=30N+10E-50N+50E,39N+30E
Point gcmap_p1(10.0, 30.0);
Point gcmap_p2(50.0, 50.0);
test_side<Point>("blog1", gcmap_p1, gcmap_p2, Point(30.0, 41.0), -1, 1);
test_side<Point>("blog1", gcmap_p1, gcmap_p2, Point(30.0, 42.0), -1, 1);
test_side<Point>("blog1", gcmap_p1, gcmap_p2, Point(30.0, 43.0), -1, 1);
test_side<Point>("blog1", gcmap_p1, gcmap_p2, Point(30.0, 44.0), 1);
// http://www.gcmap.com/mapui?P=50N+80E-60N+50W,65N+30E
Point gcmap_np1(80.0, 50.0);
Point gcmap_np2(-50.0, 60.0);
// http://www.gcmap.com/mapui?P=50N+140E-60N+10E,65N+30E
//Point gcmap_np1(140.0, 50.0);
//Point gcmap_np2(10.0, 60.0);
//test_side<Point>(gcmap_np1, gcmap_np2, gcmap_np, 1);
test_side<Point>("40", gcmap_np1, gcmap_np2, Point(30.0, 60.0), 1, -1);
test_side<Point>("45", gcmap_np1, gcmap_np2, Point(30.0, 65.0), 1, -1);
test_side<Point>("70", gcmap_np1, gcmap_np2, Point(30.0, 70.0), 1, -1);
test_side<Point>("75", gcmap_np1, gcmap_np2, Point(30.0, 75.0), -1);
}
int test_main(int, char* [])
{
test_all<bg::model::point<int, 2, bg::cs::spherical<bg::degree> > >();
test_all<bg::model::point<double, 2, bg::cs::spherical_equatorial<bg::degree> > >();
#if defined(HAVE_TTMATH)
typedef ttmath::Big<1,4> tt;
test_all<bg::model::point<tt, 2, bg::cs::spherical_equatorial<bg::degree> > >();
#endif
return 0;
}
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