mirror of
https://github.com/boostorg/geometry.git
synced 2025-05-10 07:34:03 +00:00
9cd71226df
added distance checks added mpl assertions added intersection segment/box renamed "segment_iterator" to "segment_returning_iterator" to be able to reuse that name later on [SVN r64505]
230 lines
8.0 KiB
C++
230 lines
8.0 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)
|
|
|
|
#define TEST_ARRAY
|
|
|
|
#include <sstream>
|
|
|
|
#include <algorithms/test_distance.hpp>
|
|
|
|
#include <boost/mpl/if.hpp>
|
|
|
|
#include <boost/geometry/geometries/geometries.hpp>
|
|
#include <boost/geometry/geometries/adapted/boost_array_as_linestring.hpp>
|
|
#include <boost/geometry/geometries/adapted/c_array_cartesian.hpp>
|
|
#include <boost/geometry/geometries/adapted/tuple_cartesian.hpp>
|
|
|
|
#include <test_common/test_point.hpp>
|
|
#include <test_geometries/custom_segment.hpp>
|
|
#include <test_geometries/wrapped_boost_array.hpp>
|
|
|
|
|
|
namespace bg = boost::geometry;
|
|
|
|
|
|
template <typename P>
|
|
void test_distance_point()
|
|
{
|
|
namespace services = bg::strategy::distance::services;
|
|
typedef typename bg::distance_result<P>::type return_type;
|
|
|
|
// Basic, trivial test
|
|
|
|
P p1;
|
|
bg::set<0>(p1, 1);
|
|
bg::set<1>(p1, 1);
|
|
|
|
P p2;
|
|
bg::set<0>(p2, 2);
|
|
bg::set<1>(p2, 2);
|
|
|
|
return_type d = bg::distance(p1, p2);
|
|
BOOST_CHECK_CLOSE(d, return_type(1.4142135), 0.001);
|
|
|
|
// Test specifying strategy manually
|
|
typename services::default_strategy<bg::point_tag, P>::type strategy;
|
|
|
|
d = bg::distance(p1, p2, strategy);
|
|
BOOST_CHECK_CLOSE(d, return_type(1.4142135), 0.001);
|
|
|
|
{
|
|
// Test custom strategy
|
|
BOOST_CONCEPT_ASSERT( (bg::concept::PointDistanceStrategy<taxicab_distance<P> >) );
|
|
|
|
typedef typename services::return_type<taxicab_distance<P> >::type cab_return_type;
|
|
BOOST_MPL_ASSERT((boost::is_same<cab_return_type, typename bg::coordinate_type<P>::type>));
|
|
|
|
taxicab_distance<P> tcd;
|
|
cab_return_type d = bg::distance(p1, p2, tcd);
|
|
|
|
BOOST_CHECK( bg::math::abs(d - cab_return_type(2)) <= cab_return_type(0.01) );
|
|
}
|
|
|
|
{
|
|
// test comparability
|
|
|
|
typedef typename services::default_strategy<bg::point_tag, P>::type strategy_type;
|
|
typedef typename services::comparable_type<strategy_type>::type comparable_strategy_type;
|
|
|
|
strategy_type strategy;
|
|
comparable_strategy_type comparable_strategy = services::get_comparable<strategy_type>::apply(strategy);
|
|
return_type comparable = services::result_from_distance<comparable_strategy_type>::apply(comparable_strategy, 3);
|
|
|
|
BOOST_CHECK_CLOSE(comparable, return_type(9), 0.001);
|
|
}
|
|
}
|
|
|
|
template <typename P>
|
|
void test_distance_segment()
|
|
{
|
|
typedef typename bg::distance_result<P>::type return_type;
|
|
typedef typename bg::coordinate_type<P>::type coordinate_type;
|
|
|
|
P s1; bg::set<0>(s1, 1); bg::set<1>(s1, 1);
|
|
P s2; bg::set<0>(s2, 4); bg::set<1>(s2, 4);
|
|
|
|
// Check points left, right, projected-left, projected-right, on segment
|
|
P p1; bg::set<0>(p1, 0); bg::set<1>(p1, 1);
|
|
P p2; bg::set<0>(p2, 1); bg::set<1>(p2, 0);
|
|
P p3; bg::set<0>(p3, 3); bg::set<1>(p3, 1);
|
|
P p4; bg::set<0>(p4, 1); bg::set<1>(p4, 3);
|
|
P p5; bg::set<0>(p5, 3); bg::set<1>(p5, 3);
|
|
|
|
bg::segment<P const> const seg(s1, s2);
|
|
|
|
return_type d1 = bg::distance(p1, seg);
|
|
return_type d2 = bg::distance(p2, seg);
|
|
return_type d3 = bg::distance(p3, seg);
|
|
return_type d4 = bg::distance(p4, seg);
|
|
return_type d5 = bg::distance(p5, seg);
|
|
|
|
BOOST_CHECK_CLOSE(d1, return_type(1), 0.001);
|
|
BOOST_CHECK_CLOSE(d2, return_type(1), 0.001);
|
|
BOOST_CHECK_CLOSE(d3, return_type(1.4142135), 0.001);
|
|
BOOST_CHECK_CLOSE(d4, return_type(1.4142135), 0.001);
|
|
BOOST_CHECK_CLOSE(d5, return_type(0), 0.001);
|
|
|
|
// Reverse case: segment/point instead of point/segment
|
|
return_type dr1 = bg::distance(seg, p1);
|
|
return_type dr2 = bg::distance(seg, p2);
|
|
|
|
BOOST_CHECK_CLOSE(dr1, d1, 0.001);
|
|
BOOST_CHECK_CLOSE(dr2, d2, 0.001);
|
|
|
|
// Test specifying strategy manually:
|
|
// 1) point-point-distance
|
|
typename bg::strategy::distance::services::default_strategy<bg::point_tag, P>::type pp_strategy;
|
|
d1 = bg::distance(p1, seg, pp_strategy);
|
|
BOOST_CHECK_CLOSE(d1, return_type(1), 0.001);
|
|
|
|
// 2) point-segment-distance
|
|
typename bg::strategy::distance::services::default_strategy<bg::segment_tag, P>::type ps_strategy;
|
|
d1 = bg::distance(p1, seg, ps_strategy);
|
|
BOOST_CHECK_CLOSE(d1, return_type(1), 0.001);
|
|
|
|
// 3) custom point strategy
|
|
taxicab_distance<P> tcd;
|
|
return_type d = bg::distance(p1, seg, tcd);
|
|
BOOST_CHECK_CLOSE(d1, return_type(1), 0.001);
|
|
}
|
|
|
|
|
|
template <typename P>
|
|
void test_distance_array_as_linestring()
|
|
{
|
|
typedef typename bg::distance_result<P>::type return_type;
|
|
|
|
// Normal array does not have
|
|
boost::array<P, 2> points;
|
|
bg::set<0>(points[0], 1);
|
|
bg::set<1>(points[0], 1);
|
|
bg::set<0>(points[1], 3);
|
|
bg::set<1>(points[1], 3);
|
|
|
|
P p;
|
|
bg::set<0>(p, 2);
|
|
bg::set<1>(p, 1);
|
|
|
|
return_type d = bg::distance(p, points);
|
|
BOOST_CHECK_CLOSE(d, return_type(0.70710678), 0.001);
|
|
|
|
bg::set<0>(p, 5); bg::set<1>(p, 5);
|
|
d = bg::distance(p, points);
|
|
BOOST_CHECK_CLOSE(d, return_type(2.828427), 0.001);
|
|
}
|
|
|
|
|
|
|
|
|
|
template <typename P>
|
|
void test_all()
|
|
{
|
|
test_distance_point<P>();
|
|
test_distance_segment<P>();
|
|
test_distance_array_as_linestring<P>();
|
|
|
|
test_geometry<P, test::custom_segment>("POINT(1 3)", "LINESTRING(1 1,4 4)", sqrt(2.0));
|
|
test_geometry<P, test::custom_segment>("POINT(3 1)", "LINESTRING(1 1,4 4)", sqrt(2.0));
|
|
|
|
test_geometry<P, P>("POINT(1 1)", "POINT(2 2)", sqrt(2.0));
|
|
test_geometry<P, P>("POINT(0 0)", "POINT(0 3)", 3.0);
|
|
test_geometry<P, P>("POINT(0 0)", "POINT(4 0)", 4.0);
|
|
test_geometry<P, P>("POINT(0 3)", "POINT(4 0)", 5.0);
|
|
test_geometry<P, bg::linestring<P> >("POINT(1 3)", "LINESTRING(1 1,4 4)", sqrt(2.0));
|
|
test_geometry<P, bg::linestring<P> >("POINT(3 1)", "LINESTRING(1 1,4 4)", sqrt(2.0));
|
|
test_geometry<bg::linestring<P>, P>("LINESTRING(1 1,4 4)", "POINT(1 3)", sqrt(2.0));
|
|
|
|
// Rings
|
|
test_geometry<P, bg::linear_ring<P> >("POINT(1 3)", "POLYGON((1 1,4 4,5 0,1 1))", sqrt(2.0));
|
|
test_geometry<P, bg::linear_ring<P> >("POINT(3 1)", "POLYGON((1 1,4 4,5 0,1 1))", 0.0);
|
|
// other way round
|
|
test_geometry<bg::linear_ring<P>, P>("POLYGON((1 1,4 4,5 0,1 1))", "POINT(3 1)", 0.0);
|
|
// open ring
|
|
test_geometry<P, bg::linear_ring<P, std::vector, true, false> >("POINT(1 3)", "POLYGON((4 4,5 0,1 1))", sqrt(2.0));
|
|
|
|
// Polygons
|
|
test_geometry<P, bg::polygon<P> >("POINT(1 3)", "POLYGON((1 1,4 4,5 0,1 1))", sqrt(2.0));
|
|
test_geometry<P, bg::polygon<P> >("POINT(3 1)", "POLYGON((1 1,4 4,5 0,1 1))", 0.0);
|
|
// other way round
|
|
test_geometry<bg::polygon<P>, P>("POLYGON((1 1,4 4,5 0,1 1))", "POINT(3 1)", 0.0);
|
|
// open polygon
|
|
test_geometry<P, bg::polygon<P, std::vector, std::vector, true, false> >("POINT(1 3)", "POLYGON((4 4,5 0,1 1))", sqrt(2.0));
|
|
|
|
// Polygons with holes
|
|
std::string donut = "POLYGON ((0 0,1 9,8 1,0 0),(1 1,4 1,1 4,1 1))";
|
|
test_geometry<P, bg::polygon<P> >("POINT(2 2)", donut, 0.5 * sqrt(2.0));
|
|
test_geometry<P, bg::polygon<P> >("POINT(3 3)", donut, 0.0);
|
|
// other way round
|
|
test_geometry<bg::polygon<P>, P>(donut, "POINT(2 2)", 0.5 * sqrt(2.0));
|
|
// open
|
|
test_geometry<P, bg::polygon<P, std::vector, std::vector, true, false> >("POINT(2 2)", "POLYGON ((0 0,1 9,8 1),(1 1,4 1,1 4))", 0.5 * sqrt(2.0));
|
|
|
|
|
|
// DOES NOT COMPILE - cannot do read_wkt (because boost::array is not variably sized)
|
|
// test_geometry<P, boost::array<P, 2> >("POINT(3 1)", "LINESTRING(1 1,4 4)", sqrt(2.0));
|
|
|
|
test_geometry<P, test::wrapped_boost_array<P, 2> >("POINT(3 1)", "LINESTRING(1 1,4 4)", sqrt(2.0));
|
|
}
|
|
|
|
int test_main(int, char* [])
|
|
{
|
|
#ifdef TEST_ARRAY
|
|
//test_all<int[2]>();
|
|
//test_all<float[2]>();
|
|
//test_all<double[2]>();
|
|
//test_all<test::test_point>(); // located here because of 3D
|
|
#endif
|
|
|
|
test_all<bg::point_xy<int> >();
|
|
test_all<boost::tuple<float, float> >();
|
|
test_all<bg::point_xy<float> >();
|
|
test_all<bg::point_xy<double> >();
|
|
|
|
return 0;
|
|
}
|