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//
Boost.Geometry (aka GGL, Generic Geometry Library)
//
Unit Test
//
Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
//
Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
//
Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
//
This file was modified by Oracle on 2014-2021.
//
Modifications copyright (c) 2014-2021 Oracle and/or its affiliates.
//
Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
//
Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
//
(geolib/GGL), copyright (c) 1995-2010 Geodan, 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
<
algorithms/test_centroid.hpp
>
#
include
<
boost/geometry/geometries/geometries.hpp
>
#
include
<
boost/geometry/geometries/point_xy.hpp
>
#
include
<
boost/geometry/geometries/adapted/c_array.hpp
>
#
include
<
boost/geometry/geometries/adapted/boost_tuple.hpp
>
#
include
<
test_geometries/all_custom_polygon.hpp
>
BOOST_GEOMETRY_REGISTER_C_ARRAY_CS
(cs::cartesian)
BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS
(cs::cartesian)
template
<
typename
Polygon>
void
test_polygon
()
{
test_centroid<Polygon>(
"
POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2
"
"
,3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3))
"
,
4.06923363095238
,
1.65055803571429
);
//
with holes
test_centroid<Polygon>(
"
POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2
"
"
,3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3)
"
"
,(4 2,4.2 1.4,4.8 1.9,4.4 2.2,4 2))
"
,
4.0466264962959677
,
1.6348996057331333
);
test_centroid<Polygon>(
"
POLYGON((0 0,0 10,10 10,10 0,0 0))
"
,
5.0
,
5.0
);
test_centroid<Polygon>(
"
POLYGON((-10 0,0 0,0 -10,-10 -10,-10 0))
"
, -
5.0
, -
5.0
);
//
invalid, self-intersecting polygon (area = 0)
test_centroid<Polygon>(
"
POLYGON((1 1,4 -2,4 2,10 0,1 0,10 1,1 1))
"
,
1.0
,
1.0
);
//
invalid, degenerated
test_centroid<Polygon>(
"
POLYGON((1 1,1 1,1 1,1 1))
"
,
1.0
,
1.0
);
test_centroid<Polygon>(
"
POLYGON((1 1))
"
,
1.0
,
1.0
);
//
should (1.5 1) be returned?
//
if yes, then all other Polygons degenerated to Linestrings should be handled
test_centroid<Polygon>(
"
POLYGON((1 1,2 1,1 1,1 1))
"
,
1.0
,
1.0
);
//
reported 2015.04.24
//
input INT, result FP
test_centroid
<
bg::model::polygon<bg::model::d2::point_xy<
int
> >,
typename
bg::point_type<Polygon>::type,
typename
bg::coordinate_type<Polygon>::type
>(
"
POLYGON((1 1, 1 2, 2 2, 2 1, 1 1))
"
,
1.5
,
1.5
);
}
template
<
typename
P>
void
test_2d
()
{
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(1 1, 2 2, 3 3)
"
,
2.0
,
2.0
);
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(0 0,0 4, 4 4)
"
,
1.0
,
3.0
);
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(0 0,3 3,0 6,3 9,0 12)
"
,
1.5
,
6.0
);
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(1 1,10 1,1 0,10 0,4 -2,1 1)
"
,
5.41385255923004
,
0.13507358481085
);
//
degenerated linestring (length = 0)
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(1 1, 1 1)
"
,
1.0
,
1.0
);
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(1 1)
"
,
1.0
,
1.0
);
{
bg::model::linestring<P> ls;
//
LINESTRING(1 -1,1e308 -1e308,0.0001 0.000)
bg::append
(ls,
P
(
1
, -
1
));
typedef
typename
bg::coordinate_type<P>::type coord_type;
//
double m = 1.0e308;
coord_type m = (std::numeric_limits<coord_type>::max)();
bg::append
(ls,
P
(
coord_type
(m),
coord_type
(-m)));
bg::append
(ls,
P
(
coord_type
(
0.0001
),
coord_type
(
0.000
)));
if
(
BOOST_GEOMETRY_CONDITION
((std::is_same<
typename
bg::coordinate_type<P>::type,
double
>::value)))
{
//
for doubles the INF is detected and the calculation stopped
//
currently for Geometries for which the centroid can't be calculated
//
the first Point is returned
test_centroid<bg::model::linestring<P> >(ls,
1.0
, -
1.0
);
}
else
{
//
for floats internally the double is used to store intermediate results
//
this type is capable to store MAX_FLT and "correctly" calculate the centroid
//
test_centroid<bg::model::linestring<P> >(ls, m/3, -m/3);
//
the result is around (1.7e38 -1.7e38)
}
}
test_centroid<bg::model::segment<P> >(
"
LINESTRING(1 1, 3 3)
"
,
2.0
,
2.0
);
test_centroid<bg::model::ring<P> >(
"
POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2
"
"
,3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3))
"
,
4.06923363095238
,
1.65055803571429
);
test_polygon<bg::model::polygon<P> >();
test_polygon<all_custom_polygon<P> >();
//
ccw
test_centroid<bg::model::ring<P,
false
> >(
"
POLYGON((2 1.3,2.9 0.7,4.9 0.8,5.4 1.2,5.3 2.6,4.1 3,3.4 2
"
"
,3.7 1.6,3.4 1.2,2.8 1.8,2.4 1.7,2 1.3))
"
,
4.06923363095238
,
1.65055803571429
);
//
open / closed
test_centroid<bg::model::ring<P,
true
,
true
> >(
"
POLYGON((1 1,2 2,3 1,2 0,1 1))
"
,
2.0
,
1.0
);
test_centroid<bg::model::ring<P,
true
,
false
> >(
"
POLYGON((1 1,2 2,3 1,2 0))
"
,
2.0
,
1.0
);
test_centroid<bg::model::box<P> >(
"
POLYGON((1 2,3 4))
"
,
2
,
3
);
test_centroid<P>(
"
POINT(3 3)
"
,
3
,
3
);
//
INT -> FP
test_centroid
<
bg::model::ring<bg::model::d2::point_xy<
int
> >,
P,
typename
bg::coordinate_type<P>::type
>(
"
POLYGON((1 1, 1 2, 2 2, 2 1, 1 1))
"
,
1.5
,
1.5
);
test_centroid
<
bg::model::linestring<bg::model::d2::point_xy<
int
> >,
P,
typename
bg::coordinate_type<P>::type
>(
"
LINESTRING(1 1, 2 2)
"
,
1.5
,
1.5
);
test_centroid
<
bg::model::box<bg::model::d2::point_xy<
int
> >,
P,
typename
bg::coordinate_type<P>::type
>(
"
BOX(1 1, 2 2)
"
,
1.5
,
1.5
);
}
template
<
typename
P>
void
test_3d
()
{
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(1 2 3,4 5 -6,7 -8 9,-10 11 12,13 -14 -15, 16 17 18)
"
,
5.6748865168734692
,
0.31974938587214002
,
1.9915270387763671
);
test_centroid<bg::model::box<P> >(
"
POLYGON((1 2 3,5 6 7))
"
,
3
,
4
,
5
);
test_centroid<bg::model::segment<P> >(
"
LINESTRING(1 1 1,3 3 3)
"
,
2
,
2
,
2
);
test_centroid<P>(
"
POINT(1 2 3)
"
,
1
,
2
,
3
);
}
template
<
typename
P>
void
test_5d
()
{
test_centroid<bg::model::linestring<P> >(
"
LINESTRING(1 2 3 4 95,4 5 -6 24 40,7 -8 9 -5 -7,-10 11 12 -5 5,13 -14 -15 4 3, 16 17 18 5 12)
"
,
4.9202312983547678
,
0.69590937869808345
,
1.2632138719797417
,
6.0468332057401986
,
23.082402715244868
);
}
template
<
typename
P>
void
test_exceptions
()
{
test_centroid_exception<bg::model::linestring<P> >();
test_centroid_exception<bg::model::polygon<P> >();
test_centroid_exception<bg::model::ring<P> >();
//
Empty exterior ring
test_centroid_exception<bg::model::polygon<P> >(
"
POLYGON((), ())
"
);
test_centroid_exception<bg::model::polygon<P> >(
"
POLYGON((), (0 0, 1 0, 1 1, 0 1, 0 0))
"
);
}
template
<
typename
P>
void
test_empty
()
{
//
Empty interior ring
test_centroid<bg::model::polygon<P> >(
"
POLYGON((0 0, 1 0, 1 1, 0 1, 0 0), ())
"
,
0.5
,
0.5
);
}
void
test_large_integers
()
{
typedef
bg::model::point<
int
,
2
, bg::cs::cartesian> int_point_type;
typedef
bg::model::point<
double
,
2
, bg::cs::cartesian> double_point_type;
bg::model::polygon<int_point_type> int_poly;
bg::model::polygon<double_point_type> double_poly;
std::string
const
polygon_li =
"
POLYGON((1872000 528000,1872000 192000,1536119 192000,1536000 528000,1200000 528000,1200000 863880,1536000 863880,1872000 863880,1872000 528000))
"
;
bg::read_wkt
(polygon_li, int_poly);
bg::read_wkt
(polygon_li, double_poly);
int_point_type int_centroid;
double_point_type double_centroid;
bg::centroid
(int_poly, int_centroid);
bg::centroid
(double_poly, double_centroid);
int_point_type double_centroid_as_int;
bg::assign_zero
(double_centroid_as_int);
bg::assign
(int_centroid, double_centroid_as_int);
BOOST_CHECK_EQUAL
(bg::get<
0
>(int_centroid), bg::get<
0
>(double_centroid_as_int));
BOOST_CHECK_EQUAL
(bg::get<
1
>(int_centroid), bg::get<
1
>(double_centroid_as_int));
}
void
test_large_doubles
()
{
typedef
bg::model::point<
double
,
2
, bg::cs::cartesian> point;
point pt_far, pt_near;
bg::model::polygon<point> poly_far, poly_near;
//
related to ticket #10643
bg::read_wkt
(
"
POLYGON((1074699.93 703064.65, 1074703.90 703064.58, 1074704.53 703061.40, 1074702.10 703054.62, 1074699.93 703064.65))
"
, poly_far);
bg::read_wkt
(
"
POLYGON((699.93 64.65, 703.90 64.58, 704.53 61.40, 702.10 54.62, 699.93 64.65))
"
, poly_near);
bg::centroid
(poly_far, pt_far);
bg::centroid
(poly_near, pt_near);
BOOST_CHECK
(
bg::within
(pt_far, poly_far));
BOOST_CHECK
(
bg::within
(pt_near, poly_near));
point pt_near_moved;
bg::set<
0
>(pt_near_moved, bg::get<
0
>(pt_near) +
1074000.0
);
bg::set<
1
>(pt_near_moved, bg::get<
1
>(pt_near) +
703000.0
);
double
d =
bg::distance
(pt_far, pt_near_moved);
BOOST_CHECK
(d <
0.1
);
}
int
test_main
(
int
,
char
* [])
{
test_2d<bg::model::d2::point_xy<
double
> >();
test_2d<boost::tuple<
float
,
float
> >();
test_2d<bg::model::d2::point_xy<
float
> >();
test_3d<boost::tuple<
double
,
double
,
double
> >();
test_5d<boost::tuple<
double
,
double
,
double
,
double
,
double
> >();
#
ifndef
NDEBUG
//
The test currently fails in release mode. TODO: fix this
test_large_integers
();
#
endif
test_large_doubles
();
test_exceptions<bg::model::d2::point_xy<
double
> >();
test_empty<bg::model::d2::point_xy<
double
> >();
return
0
;
}
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