mirror of
https://github.com/boostorg/geometry.git
synced 2025-05-10 15:44:07 +00:00
243 lines
7.2 KiB
C++
243 lines
7.2 KiB
C++
// 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)
|
|
|
|
#ifndef BOOST_GEOMETRY_TEST_INTERSECTION_HPP
|
|
#define BOOST_GEOMETRY_TEST_INTERSECTION_HPP
|
|
|
|
#include <fstream>
|
|
#include <iomanip>
|
|
|
|
#include <boost/foreach.hpp>
|
|
|
|
#include <boost/geometry/algorithms/intersection.hpp>
|
|
#include <boost/geometry/algorithms/area.hpp>
|
|
#include <boost/geometry/algorithms/correct.hpp>
|
|
#include <boost/geometry/algorithms/length.hpp>
|
|
#include <boost/geometry/algorithms/num_points.hpp>
|
|
|
|
#include <boost/geometry/geometries/geometries.hpp>
|
|
|
|
#include <boost/geometry/strategies/strategies.hpp>
|
|
|
|
#include <boost/geometry/io/wkt/wkt.hpp>
|
|
|
|
|
|
#if defined(TEST_WITH_SVG)
|
|
# include <boost/geometry/io/svg/svg_mapper.hpp>
|
|
#endif
|
|
|
|
#include <geometry_test_common.hpp>
|
|
|
|
|
|
template <typename OutputType, typename CalculationType, typename G1, typename G2>
|
|
typename bg::default_area_result<G1>::type test_intersection(std::string const& caseid,
|
|
G1 const& g1, G2 const& g2,
|
|
std::size_t expected_count = 0, int expected_point_count = 0,
|
|
double expected_length_or_area = 0,
|
|
double percentage = 0.0001,
|
|
bool debug = false)
|
|
{
|
|
bool const is_line = bg::geometry_id<OutputType>::type::value == 2;
|
|
|
|
if (debug)
|
|
{
|
|
std::cout << std::endl << "case " << caseid << std::endl;
|
|
}
|
|
|
|
|
|
typedef typename bg::coordinate_type<G1>::type coordinate_type;
|
|
typedef typename bg::point_type<G1>::type point_type;
|
|
|
|
typedef bg::strategy_intersection
|
|
<
|
|
typename bg::cs_tag<point_type>::type,
|
|
G1,
|
|
G2,
|
|
point_type,
|
|
typename bg::rescale_policy_type<point_type>::type,
|
|
CalculationType
|
|
> strategy;
|
|
|
|
// Check both normal behaviour, and _inserter behaviour
|
|
if (! debug)
|
|
{
|
|
std::vector<OutputType> out;
|
|
bg::intersection(g1, g2, out);
|
|
}
|
|
std::vector<OutputType> clip;
|
|
bg::detail::intersection::intersection_insert<OutputType>(g1, g2, std::back_inserter(clip), strategy());
|
|
|
|
|
|
typename bg::default_area_result<G1>::type length_or_area = 0;
|
|
int n = 0;
|
|
for (typename std::vector<OutputType>::iterator it = clip.begin();
|
|
it != clip.end();
|
|
++it)
|
|
{
|
|
if (expected_point_count > 0)
|
|
{
|
|
n += bg::num_points(*it, true);
|
|
}
|
|
|
|
// instead of specialization we check it run-time here
|
|
length_or_area += is_line
|
|
? bg::length(*it)
|
|
: bg::area(*it);
|
|
|
|
if (debug)
|
|
{
|
|
std::cout << std::setprecision(20) << bg::wkt(*it) << std::endl;
|
|
}
|
|
}
|
|
|
|
|
|
#if ! defined(BOOST_GEOMETRY_NO_BOOST_TEST)
|
|
if (expected_point_count > 0)
|
|
{
|
|
BOOST_CHECK_MESSAGE(bg::math::abs(n - expected_point_count) < 3,
|
|
"intersection: " << caseid
|
|
<< " #points expected: " << expected_point_count
|
|
<< " detected: " << n
|
|
<< " type: " << (type_for_assert_message<G1, G2>())
|
|
);
|
|
}
|
|
|
|
if (expected_count > 0)
|
|
{
|
|
BOOST_CHECK_MESSAGE(clip.size() == expected_count,
|
|
"intersection: " << caseid
|
|
<< " #outputs expected: " << expected_count
|
|
<< " detected: " << clip.size()
|
|
<< " type: " << (type_for_assert_message<G1, G2>())
|
|
);
|
|
}
|
|
|
|
double const detected_length_or_area = boost::numeric_cast<double>(length_or_area);
|
|
BOOST_CHECK_CLOSE(detected_length_or_area, expected_length_or_area, percentage);
|
|
#endif
|
|
|
|
|
|
#if defined(TEST_WITH_SVG)
|
|
{
|
|
bool const ccw =
|
|
bg::point_order<G1>::value == bg::counterclockwise
|
|
|| bg::point_order<G2>::value == bg::counterclockwise;
|
|
bool const open =
|
|
bg::closure<G1>::value == bg::open
|
|
|| bg::closure<G2>::value == bg::open;
|
|
|
|
std::ostringstream filename;
|
|
filename << "intersection_"
|
|
<< caseid << "_"
|
|
<< string_from_type<coordinate_type>::name()
|
|
<< string_from_type<CalculationType>::name()
|
|
<< (ccw ? "_ccw" : "")
|
|
<< (open ? "_open" : "")
|
|
<< ".svg";
|
|
|
|
std::ofstream svg(filename.str().c_str());
|
|
|
|
bg::svg_mapper<point_type> mapper(svg, 500, 500);
|
|
|
|
mapper.add(g1);
|
|
mapper.add(g2);
|
|
|
|
mapper.map(g1, is_line
|
|
? "opacity:0.6;stroke:rgb(0,255,0);stroke-width:5"
|
|
: "fill-opacity:0.5;fill:rgb(153,204,0);"
|
|
"stroke:rgb(153,204,0);stroke-width:3");
|
|
mapper.map(g2, "fill-opacity:0.3;fill:rgb(51,51,153);"
|
|
"stroke:rgb(51,51,153);stroke-width:3");
|
|
|
|
for (typename std::vector<OutputType>::const_iterator it = clip.begin();
|
|
it != clip.end(); ++it)
|
|
{
|
|
mapper.map(*it, "fill-opacity:0.2;stroke-opacity:0.4;fill:rgb(255,0,0);"
|
|
"stroke:rgb(255,0,255);stroke-width:8");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (debug)
|
|
{
|
|
std::cout << "end case " << caseid << std::endl;
|
|
}
|
|
|
|
return length_or_area;
|
|
}
|
|
|
|
template <typename OutputType, typename G1, typename G2>
|
|
typename bg::default_area_result<G1>::type test_one(std::string const& caseid,
|
|
std::string const& wkt1, std::string const& wkt2,
|
|
std::size_t expected_count = 0, int expected_point_count = 0,
|
|
double expected_length_or_area = 0,
|
|
double percentage = 0.0001,
|
|
bool debug = false)
|
|
{
|
|
G1 g1;
|
|
bg::read_wkt(wkt1, g1);
|
|
|
|
G2 g2;
|
|
bg::read_wkt(wkt2, g2);
|
|
|
|
// Reverse if necessary
|
|
bg::correct(g1);
|
|
bg::correct(g2);
|
|
|
|
return test_intersection<OutputType, void>(caseid, g1, g2,
|
|
expected_count, expected_point_count,
|
|
expected_length_or_area, percentage,
|
|
debug);
|
|
}
|
|
|
|
template <typename OutputType, typename Areal, typename Linear>
|
|
void test_one_lp(std::string const& caseid,
|
|
std::string const& wkt_areal, std::string const& wkt_linear,
|
|
std::size_t expected_count = 0, int expected_point_count = 0,
|
|
double expected_length = 0,
|
|
double percentage = 0.0001,
|
|
bool debug1 = false, bool debug2 = false)
|
|
{
|
|
Areal areal;
|
|
bg::read_wkt(wkt_areal, areal);
|
|
bg::correct(areal);
|
|
|
|
Linear linear;
|
|
bg::read_wkt(wkt_linear, linear);
|
|
|
|
test_intersection<OutputType, void>(caseid, areal, linear,
|
|
expected_count, expected_point_count,
|
|
expected_length, percentage, debug1);
|
|
|
|
// A linestring reversed should deliver exactly the same.
|
|
bg::reverse(linear);
|
|
|
|
test_intersection<OutputType, void>(caseid + "_rev", areal, linear,
|
|
expected_count, expected_point_count,
|
|
expected_length, percentage, debug2);
|
|
}
|
|
|
|
template <typename Geometry1, typename Geometry2>
|
|
void test_point_output(std::string const& wkt1, std::string const& wkt2, unsigned int expected_count)
|
|
{
|
|
Geometry1 g1;
|
|
bg::read_wkt(wkt1, g1);
|
|
bg::correct(g1);
|
|
|
|
Geometry2 g2;
|
|
bg::read_wkt(wkt2, g2);
|
|
bg::correct(g2);
|
|
|
|
std::vector<typename bg::point_type<Geometry1>::type> points;
|
|
bg::intersection(g1, g2, points);
|
|
BOOST_CHECK_EQUAL(points.size(), expected_count);
|
|
}
|
|
|
|
|
|
#endif
|