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//
// Test Suite for C-API GEOSSimplify
#include <tut/tut.hpp>
// geos
#include <geos_c.h>
// std
#include <cstdlib>
#include "capi_test_utils.h"
namespace tut {
//
// Test Group
//
// Common data used in test cases.
struct test_capigeossnap_data : public capitest::utility {
test_capigeossnap_data()
{
GEOSWKTWriter_setRoundingPrecision(wktw_, 8);
}
};
typedef test_group<test_capigeossnap_data> group;
typedef group::object object;
group test_capigeossnap_group("capi::GEOSSnap");
//
// Test Cases
//
/// Polygon snapped to point
template<>
template<>
void object::test<1>
()
{
geom1_ = GEOSGeomFromWKT("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))");
geom2_ = GEOSGeomFromWKT("POINT(0.5 0)");
geom3_ = GEOSSnap(geom1_, geom2_, 1);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "POLYGON ((0.5 0, 10 0, 10 10, 0 10, 0.5 0))");
}
/// Line snapped to line (vertex)
template<>
template<>
void object::test<2>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING (-30 -20, 50 60, 50 0)");
geom2_ = GEOSGeomFromWKT("LINESTRING (-29 -20, 40 60, 51 0)");
geom3_ = GEOSSnap(geom1_, geom2_, 2);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (-29 -20, 50 60, 51 0)");
}
/// Line snapped to line (segment)
template<>
template<>
void object::test<3>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING (-20 -20, 50 50, 100 100)");
geom2_ = GEOSGeomFromWKT("LINESTRING (-10 -9, 40 20, 80 79)");
geom3_ = GEOSSnap(geom1_, geom2_, 2);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out,
"LINESTRING (-20 -20, -10 -9, 50 50, 80 79, 100 100)"
);
}
/// Another single segment
template<>
template<>
void object::test<4>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 0, 10 0)");
geom2_ = GEOSGeomFromWKT("LINESTRING(0 0, 9 0)");
geom3_ = GEOSSnap(geom1_, geom2_, 2);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (0 0, 9 0)");
}
/// See http://trac.osgeo.org/geos/ticket/501
template<>
template<>
void object::test<5>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 0, 10 0)");
geom2_ = GEOSGeomFromWKT("LINESTRING(0 0, 9 0, 10 0, 11 0)");
geom3_ = GEOSSnap(geom1_, geom2_, 2);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
//ensure_equals(out, "LINESTRING (0 0, 9 0, 10 0)");
ensure_equals(out, "LINESTRING (0 0, 9 0, 10 0, 11 0)");
}
/// Test snapping of equidistant segments to outlyers snap point
template<>
template<>
void object::test<6>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 3,4 1,0 1)");
geom2_ = GEOSGeomFromWKT("MULTIPOINT((5 0),(4 1))");
geom3_ = GEOSSnap(geom1_, geom2_, 2);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (0 3, 4 1, 5 0, 0 1)");
//ensure_equals(out, "LINESTRING (0 3, 4 1, 0 1)");
}
/// Test snapping of equidistant segments to outlyers snap point
/// Same as the above but with the snap points order reversed
template<>
template<>
void object::test<7>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 3,4 1,0 1)");
geom2_ = GEOSGeomFromWKT("MULTIPOINT((4 1),(5 0))");
geom3_ = GEOSSnap(geom1_, geom2_, 2);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (0 3, 4 1, 5 0, 0 1)");
//ensure_equals(out, "LINESTRING (0 3, 4 1, 0 1)");
}
/// Test snapping of closed ring to outlyers snap point
template<>
template<>
void object::test<8>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 0,10 0,10 10,0 10,0 0)");
geom2_ = GEOSGeomFromWKT("MULTIPOINT((0 0),(-1 0))");
geom3_ = GEOSSnap(geom1_, geom2_, 3);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (-1 0, 0 0, 10 0, 10 10, 0 10, -1 0)");
}
template<>
template<>
void object::test<9>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(0 2,5 2,9 2,5 0)");
geom2_ = GEOSGeomFromWKT("POINT(5 0)");
geom3_ = GEOSSnap(geom1_, geom2_, 3);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (0 2, 5 2, 9 2, 5 0)");
}
// See http://trac.osgeo.org/geos/ticket/649
template<>
template<>
void object::test<10>
()
{
geom1_ = GEOSGeomFromWKT("LINESTRING(-71.1317 42.2511,-71.1317 42.2509)");
geom2_ = GEOSGeomFromWKT("MULTIPOINT((-71.1261 42.2703),(-71.1257 42.2703),(-71.1261 42.2702))");
geom3_ = GEOSSnap(geom1_, geom2_, 0.5);
char* wkt_c = GEOSWKTWriter_write(wktw_, geom3_);
std::string out(wkt_c);
free(wkt_c);
ensure_equals(out, "LINESTRING (-71.1257 42.2703, -71.1261 42.2703, -71.1261 42.2702, -71.1317 42.2509)");
}
template<>
template<>
void object::test<11>()
{
geom1_ = fromWKT("CIRCULARSTRING (0 0, 1 1, 2 0)");
geom2_ = fromWKT("LINESTRING (1 1.0001, 2 1)");
ensure(geom1_);
ensure(geom2_);
result_ = GEOSSnap(geom1_, geom2_, 0.1);
ensure("curved geometry not supported", result_ == nullptr);
}
} // namespace tut
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