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//
// Test Suite for C-API GEOSClipByRect
#include <tut/tut.hpp>
// geos
#include <geos_c.h>
// std
#include <cstdio>
#include <cstdlib>
#include "capi_test_utils.h"
namespace tut {
//
// Test Group
//
// Common data used in test cases.
struct test_capigeosclipbyrect_data : public capitest::utility {
void
checkClipByRect(
const char* wktInput,
double xmin, double ymin,
double xmax, double ymax,
const char* wktExpected)
{
input_ = fromWKT(wktInput);
result_ = GEOSClipByRect(input_, xmin, ymin, xmax, ymax);
expected_ = fromWKT(wktExpected);
bool equal = GEOSEquals(result_, expected_) == 1;
if (!equal) {
wkt_ = GEOSWKTWriter_write(wktw_, expected_);
std::printf("EXP: %s\n", wkt_);
GEOSFree(wkt_);
wkt_ = GEOSWKTWriter_write(wktw_, result_);
std::printf("OBT: %s\n", wkt_);
}
ensure(equal);
}
void
checkClipByRectIdentical(
const char* wktInput,
double xmin, double ymin,
double xmax, double ymax,
const char* wktExpected)
{
input_ = fromWKT(wktInput);
result_ = GEOSClipByRect(input_, xmin, ymin, xmax, ymax);
expected_ = fromWKT(wktExpected);
bool equal = GEOSEqualsIdentical(result_, expected_) == 1;
if (!equal) {
wkt_ = GEOSWKTWriter_write(wktw_, expected_);
std::printf("EXP: %s\n", wkt_);
GEOSFree(wkt_);
wkt_ = GEOSWKTWriter_write(wktw_, result_);
std::printf("OBT: %s\n", wkt_);
}
ensure(equal);
}
};
typedef test_group<test_capigeosclipbyrect_data> group;
typedef group::object object;
group test_capigeosclipbyrect_group("capi::GEOSClipByRect");
//
// Test Cases
//
/// Point outside
template<>
template<>
void object::test<1>()
{
checkClipByRect(
"POINT(0 0)",
10, 10, 20, 20,
"POINT EMPTY"
);
}
/// Point inside
template<>
template<>
void object::test<2>()
{
checkClipByRectIdentical(
"POINT(15 15)",
10, 10, 20, 20,
"POINT(15 15)"
);
}
/// Point on boundary
template<>
template<>
void object::test<3>()
{
checkClipByRect(
"POINT(15 10)",
10, 10, 20, 20,
"POINT EMPTY"
);
}
/// Line outside
template<>
template<>
void object::test<4>()
{
checkClipByRect(
"LINESTRING(0 0, -5 5)",
10, 10, 20, 20,
"LINESTRING EMPTY"
);
}
/// Line inside
template<>
template<>
void object::test<5>()
{
checkClipByRectIdentical(
"LINESTRING(15 15, 16 15)",
10, 10, 20, 20,
"LINESTRING(15 15, 16 15)"
);
}
/// Line on boundary
template<>
template<>
void object::test<6>()
{
checkClipByRect(
"LINESTRING(10 15, 10 10, 15 10)",
10, 10, 20, 20,
"LINESTRING EMPTY"
);
}
/// Line splitting rectangle
template<>
template<>
void object::test<7>()
{
checkClipByRectIdentical(
"LINESTRING(10 5, 25 20)",
10, 10, 20, 20,
"LINESTRING (15 10, 20 15)"
);
}
/// Polygon shell (CCW) fully on rectangle boundary
template<>
template<>
void object::test<8>()
{
checkClipByRect(
"POLYGON((10 10, 20 10, 20 20, 10 20, 10 10))",
10, 10, 20, 20,
"POLYGON((10 10, 20 10, 20 20, 10 20, 10 10))"
);
}
/// Polygon shell (CW) fully on rectangle boundary
template<>
template<>
void object::test<9>()
{
checkClipByRect(
"POLYGON((10 10, 10 20, 20 20, 20 10, 10 10))",
10, 10, 20, 20,
"POLYGON((10 10, 20 10, 20 20, 10 20, 10 10))"
);
}
/// Polygon hole (CCW) fully on rectangle boundary
template<>
template<>
void object::test<10>()
{
checkClipByRect(
"POLYGON((0 0, 0 30, 30 30, 30 0, 0 0),(10 10, 20 10, 20 20, 10 20, 10 10))",
10, 10, 20, 20,
"POLYGON EMPTY"
);
}
/// Polygon hole (CW) fully on rectangle boundary
template<>
template<>
void object::test<11>()
{
checkClipByRect(
"POLYGON((0 0, 0 30, 30 30, 30 0, 0 0),(10 10, 10 20, 20 20, 20 10, 10 10))",
10, 10, 20, 20,
"POLYGON EMPTY"
);
}
/// Polygon fully within rectangle
template<>
template<>
void object::test<12>()
{
const char* wkt = "POLYGON((1 1, 1 30, 30 30, 30 1, 1 1),(10 10, 20 10, 20 20, 10 20, 10 10))";
checkClipByRectIdentical(
wkt,
0, 0, 40, 40,
wkt);
}
/// Polygon overlapping rectangle
template<>
template<>
void object::test<13>()
{
checkClipByRectIdentical(
"POLYGON((0 0, 0 30, 30 30, 30 0, 0 0),(10 10, 20 10, 20 20, 10 20, 10 10))",
5, 5, 15, 15,
"POLYGON ((5 5, 5 15, 10 15, 10 10, 15 10, 15 5, 5 5))"
);
}
/// Clipping invalid polygon
template<>
template<>
void object::test<14>
()
{
geom1_ = fromWKT("POLYGON((1410 2055, 1410 2056, 1410 2057, 1410 2055))");
geom2_ = GEOSClipByRect(geom1_, -8, -8, 2056, 2056);
if (geom2_ != nullptr) {
wkt_ = GEOSWKTWriter_write(wktw_, geom2_);
std::printf("OBT: %s\n", wkt_);
}
ensure(nullptr == geom2_);
}
// Polygon fully covering rectangle
// https://trac.osgeo.org/postgis/ticket/4904
template<>
template<>
void object::test<15>
()
{
// POLYGON((0 0,10 0,10 10,0 10))
// Clip by ST_MakeEnvelope(2,2,5,5)
GEOSCoordSequence *cs = GEOSCoordSeq_create(5, 2);
GEOSCoordSeq_setXY(cs, 0, 0, 0);
GEOSCoordSeq_setXY(cs, 1, 10, 0);
GEOSCoordSeq_setXY(cs, 2, 10, 10);
GEOSCoordSeq_setXY(cs, 3, 0, 10);
GEOSCoordSeq_setXY(cs, 4, 0, 0);
GEOSGeometry *shell = GEOSGeom_createLinearRing(cs); // take ownership of cs
input_ = GEOSGeom_createPolygon(shell, NULL, 0); // take ownership of shell
result_ = GEOSClipByRect(input_, 2, 2, 5, 5);
expected_ = GEOSGeomFromWKT("POLYGON ((2 2, 2 5, 5 5, 5 2, 2 2))");
ensure_geometry_equals(result_, expected_);
}
/// Empty combinations - always return GEOMETRYCOLLECTION EMPTY
template<>
template<>
void object::test<16>
()
{
std::vector<const char*> variants{
"POINT EMPTY",
"LINESTRING EMPTY",
"POLYGON EMPTY",
"MULTIPOINT EMPTY",
"MULTILINESTRING EMPTY",
"MULTIPOLYGON EMPTY",
"GEOMETRYCOLLECTION EMPTY",
"LINEARRING EMPTY",
};
for (const auto& wkt : variants) {
GEOSGeometry* a = fromWKT(wkt);
GEOSGeometry* b = GEOSClipByRect(a, 0, 0, 1, 1);
ensure("GEOS_GEOMETRYCOLLECTION", GEOSGeomTypeId(b) == GEOS_GEOMETRYCOLLECTION);
GEOSGeom_destroy(a);
GEOSGeom_destroy(b);
}
}
template<>
template<>
void object::test<17>()
{
input_ = fromWKT("CIRCULARSTRING (0 0, 1 1, 2 0)");
ensure(input_ != nullptr);
result_ = GEOSClipByRect(input_, 0, 0, 1, 1);
ensure(result_ == nullptr);
}
/// Point Z inside
template<>
template<>
void object::test<18>()
{
checkClipByRectIdentical(
"POINT Z (15 15 100)",
10, 10, 20, 20,
"POINT Z (15 15 100)"
);
}
/// Line Z inside
template<>
template<>
void object::test<19>()
{
checkClipByRectIdentical(
"LINESTRING Z (15 15 0, 16 15 100)",
10, 10, 20, 20,
"LINESTRING Z (15 15 0, 16 15 100)"
);
}
/// Line Z splitting rectangle
template<>
template<>
void object::test<20>()
{
checkClipByRectIdentical(
"LINESTRING Z (0 15 0, 100 15 100)",
10, 10, 20, 20,
"LINESTRING Z (10 15 10, 20 15 20)"
);
}
/// Polygon Z overlapping rectangle
template<>
template<>
void object::test<21>()
{
checkClipByRectIdentical(
"POLYGON Z ((0 0 100, 0 30 100, 30 30 100, 30 0 100, 0 0 100),(10 10 100, 20 10 100, 20 20 100, 10 20 100, 10 10 100))",
5, 5, 15, 15,
"POLYGON Z ((5 5 100, 5 15 100, 10 15 100, 10 10 100, 15 10 100, 15 5 100, 5 5 100))"
);
}
/// Polygon Z enclosing rectangle
template<>
template<>
void object::test<22>()
{
checkClipByRectIdentical(
"POLYGON Z ((0 0 100, 0 30 100, 30 30 100, 30 0 100, 0 0 100))",
5, 5, 15, 15,
"POLYGON Z ((5 5 100, 5 15 100, 15 15 100, 15 5 100, 5 5 100))"
);
}
} // namespace tut
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