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// $Id$
//
// Test Suite for C-API GEOSGetCentroid
#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_capicentroid_data : public capitest::utility {
test_capicentroid_data() {
GEOSWKTWriter_setRoundingPrecision(wktw_, 6);
}
};
typedef test_group<test_capicentroid_data> group;
typedef group::object object;
group test_capicentroid_group("capi::GEOSGetCentroid");
//
// Test Cases
//
// Single point
template<>
template<>
void object::test<1>
()
{
geom1_ = GEOSGeomFromWKT("POINT(10 0)");
ensure(nullptr != geom1_);
geom2_ = GEOSGetCentroid(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, 10 0)");
ensure(nullptr != geom1_);
geom2_ = GEOSGetCentroid(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_ = GEOSGetCentroid(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_ = GEOSGetCentroid(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT (56.528833 25.210333)"));
}
// Empty geometry -- see http://trac.osgeo.org/geos/ticket/560
template<>
template<>
void object::test<5>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING EMPTY");
ensure(nullptr != geom1_);
geom2_ = GEOSGetCentroid(geom1_);
ensure(nullptr != geom2_);
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
ensure_equals(std::string(wkt_), std::string("POINT EMPTY"));
}
template<>
template<>
void object::test<6>()
{
input_ = fromWKT("CURVEPOLYGON (COMPOUNDCURVE (CIRCULARSTRING (0 0, 1 1, 2 0), (2 0, 0 0)))");
ensure(input_ != nullptr);
result_ = GEOSGetCentroid(input_);
ensure("curved geometry not supported", result_ == nullptr);
}
} // namespace tut
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