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// $Id$
//
// Test Suite for C-API GEOSPointOnSurface
#include <tut/tut.hpp>
// geos
#include <geos_c.h>
#include "capi_test_utils.h"
namespace tut {
//
// Test Group
//
// Common data used in test cases.
struct test_capipointonsurface_data : public capitest::utility {
test_capipointonsurface_data()
{
GEOSWKTWriter_setRoundingPrecision(wktw_, 4);
}
};
typedef test_group<test_capipointonsurface_data> group;
typedef group::object object;
group test_capipointonsurface_group("capi::GEOSPointOnSurface");
//
// Test Cases
//
// Single point
template<>
template<>
void object::test<1>
()
{
geom1_ = GEOSGeomFromWKT("POINT(10 0)");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (10 0)"));
}
// line
template<>
template<>
void object::test<2>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 0, 5 0, 10 0)");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (5 0)"));
}
// polygon
template<>
template<>
void object::test<3>
()
{
geom1_ = GEOSGeomFromWKT("POLYGON((0 0, 10 0, 10 10, 0 10, 0 0))");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (5 5)"));
}
// Tiny triangle, see http://trac.osgeo.org/geos/ticket/559
template<>
template<>
void object::test<4>
()
{
geom1_ = GEOSGeomFromWKT(
"POLYGON(( \
56.528666666700 25.2101666667, \
56.529000000000 25.2105000000, \
56.528833333300 25.2103333333, \
56.528666666700 25.2101666667))");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (56.5287 25.2102)"));
}
// Empty geometry -- see http://trac.osgeo.org/geos/ticket/560
template<>
template<>
void object::test<5>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING EMPTY");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT EMPTY"));
}
// Single point linestring -- see http://trac.osgeo.org/geos/ticket/609
template<>
template<>
void object::test<6>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 0, 0 0)");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (0 0)"));
}
// Check point on surface for three similar polygons (shapes)
// https://trac.osgeo.org/geos/ticket/840
template<>
template<>
void object::test<7>
()
{
// Polygon A
geom1_ = GEOSGeomFromWKT("POLYGON(("
"182111.031940953 141935.935903267,181944.315698016 141813.663222482,"
"181993.426552077 141735.161360171,182025.215323227 141755.058841504,"
"182042.126877935 141723.338145732,182089.035943744 141755.453352846,"
"182096.699289843 141744.892410235,182142.107084301 141773.967727472,"
"182140.268233846 141825.482203511,182123.233970367 141827.369156254,"
"182111.031940953 141935.935903267))");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (182077.0753 141881.6525)"));
}
template<>
template<>
void object::test<8>
()
{
// Polygon B from ticket #840
geom1_ = GEOSGeomFromWKT("POLYGON(("
"182512.231897141 141935.935903267,182344.315698016 141813.663222482,"
"182393.426552077 141735.161360171,182425.215323227 141755.058841504,"
"182442.126877935 141723.338145732,182489.035943744 141755.453352846,"
"182496.699289843 141744.892410235,182542.107084301 141773.967727472,"
"182540.268233846 141825.482203511,182522.034014178 141825.369229273,"
"182512.231897141 141935.935903267))");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (182476.7586 141880.7091)"));
}
template<>
template<>
void object::test<9>
()
{
// Polygon C from ticket #840
geom1_ = GEOSGeomFromWKT("POLYGON(("
"182635.760119718 141846.477712277,182826.153168283 141974.473039044,"
"182834.952846998 141857.67730337,182862.151853936 141851.277537031,"
"182860.551912351 141779.280165725,182824.553226698 141748.881275618,"
"182814.953577191 141758.480925126,182766.155358861 141721.682268681,"
"182742.156235092 141744.881421657,182692.558045971 141716.882443927,"
"182635.760119718 141846.477712277))");
ensure(nullptr != geom1_);
geom2_ = GEOSPointOnSurface(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (182755.892 141812.8789)"));
}
template<>
template<>
void object::test<10>
()
{
input_ = fromWKT("CURVEPOLYGON (COMPOUNDCURVE(CIRCULARSTRING (0 0, 1 1, 2 0), (2 0, 0 0)))");
ensure(input_);
result_ = GEOSPointOnSurface(input_);
ensure("curved geometry not supported", result_ == nullptr);
}
} // namespace tut
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