mirror of
https://github.com/boostorg/geometry.git
synced 2025-05-11 05:24:02 +00:00
70 lines
2.4 KiB
C++
70 lines
2.4 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 <iostream>
|
|
#include <iterator>
|
|
#include <string>
|
|
|
|
|
|
#include <geometry_test_common.hpp>
|
|
|
|
#include <boost/geometry/algorithms/num_points.hpp>
|
|
#include <boost/geometry/extensions/algorithms/remove_holes_if.hpp>
|
|
#include <boost/geometry/algorithms/make.hpp>
|
|
#include <boost/geometry/geometries/geometries.hpp>
|
|
#include <boost/geometry/extensions/gis/io/wkt/read_wkt.hpp>
|
|
|
|
#include <boost/geometry/strategies/strategies.hpp>
|
|
|
|
#include <test_common/test_point.hpp>
|
|
|
|
|
|
template <typename G, typename Predicate>
|
|
void test_remove_holes_if(std::string const& wkt, Predicate const& predicate,
|
|
int expected_points)
|
|
{
|
|
G g;
|
|
boost::geometry::read_wkt(wkt, g);
|
|
boost::geometry::remove_holes_if(g, predicate);
|
|
BOOST_CHECK_EQUAL(boost::geometry::num_points(g), expected_points);
|
|
}
|
|
|
|
template <typename P>
|
|
void test_all()
|
|
{
|
|
boost::geometry::elongated_hole<boost::geometry::linear_ring<P> > elongated(0.05);
|
|
|
|
// No holes
|
|
test_remove_holes_if<boost::geometry::polygon<P> >("POLYGON((0 0,0 4,4 4,4 0,0 0))", elongated, 5);
|
|
|
|
// Square hole (ratio 1/4), kept
|
|
test_remove_holes_if<boost::geometry::polygon<P> >("POLYGON((0 0,0 4,4 4,4 0,0 0), (1 1,1 2,2 2,2 1,1 1))", elongated, 10);
|
|
|
|
// Elongated hole
|
|
test_remove_holes_if<boost::geometry::polygon<P> >("POLYGON((0 0,0 4,4 4,4 0,0 0), (1 1,1 2,1.02 2,1.02 1,1 1))", elongated, 5);
|
|
|
|
// Invalid hole - removed by "elongated" predicate as well
|
|
test_remove_holes_if<boost::geometry::polygon<P> >("POLYGON((0 0,0 4,4 4,4 0,0 0), (1 1,1 2))", elongated, 5);
|
|
|
|
// Invalid hole
|
|
boost::geometry::invalid_hole<boost::geometry::linear_ring<P> > invalid;
|
|
test_remove_holes_if<boost::geometry::polygon<P> >("POLYGON((0 0,0 4,4 4,4 0,0 0), (1 1,1 2))", invalid, 5);
|
|
|
|
// Valid hole
|
|
test_remove_holes_if<boost::geometry::polygon<P> >("POLYGON((0 0,0 4,4 4,4 0,0 0), (1 1,1 2,1.02 2,1.02 1,1 1))", invalid, 10);
|
|
|
|
}
|
|
|
|
int test_main(int, char* [])
|
|
{
|
|
//test_all<boost::geometry::point_xy<float> >();
|
|
test_all<boost::geometry::point_xy<double> >();
|
|
|
|
return 0;
|
|
}
|