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// $Id: ConvexHullTest.cpp 1993 2007-06-10 11:53:49Z mloskot $
//
// Test Suite for geos::algorithm::ConvexHull
// Ported from JTS junit/algorithm/ConvexHullTest.java
// tut
#include <tut.h>
#include <utility.h>
// geos
#include <geos/algorithm/ConvexHull.h>
#include <geos/geom/LineString.h>
#include <geos/geom/Coordinate.h>
#include <geos/geom/CoordinateArraySequence.h>
#include <geos/geom/Dimension.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/GeometryFactory.h>
#include <geos/geom/PrecisionModel.h>
#include <geos/io/WKTReader.h>
// std
#include <sstream>
#include <memory>
namespace geos {
namespace geom {
class Geometry;
}
}
using namespace geos::geom; // for Location
namespace tut
{
//
// Test Group
//
// dummy data, not used
struct test_convexhull_data
{
// Typedefs used as short names by test cases
typedef std::auto_ptr<geos::geom::Geometry> GeometryAPtr;
typedef std::auto_ptr<geos::geom::LineString> LineStringAPtr;
geos::geom::PrecisionModel pm_;
geos::geom::GeometryFactory factory_;
geos::io::WKTReader reader_;
test_convexhull_data()
: pm_(1), factory_(&pm_, 0), reader_(&factory_)
{}
};
typedef test_group<test_convexhull_data> group;
typedef group::object object;
group test_convexhull_group("geos::algorithm::ConvexHull");
//
// Test Cases
//
// 1 - Test convex hull of linestring
template<>
template<>
void object::test<1>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr lineGeom(reader_.read("LINESTRING (30 220, 240 220, 240 220)"));
LineStringAPtr line(dynamic_cast_auto_ptr<LineString>(lineGeom));
ensure(0 != line.get());
GeometryAPtr hullGeom(reader_.read("LINESTRING (30 220, 240 220)"));
LineStringAPtr convexHull(dynamic_cast_auto_ptr<LineString>(hullGeom));
ensure(0 != convexHull.get());
ensure( convexHull->equalsExact(line->convexHull()) );
}
// 2 - Test convex hull of multipoint
template<>
template<>
void object::test<2>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr geom(reader_.read("MULTIPOINT (130 240, 130 240, 130 240, 570 240, 570 240, 570 240, 650 240)"));
ensure(0 != geom.get());
GeometryAPtr hullGeom(reader_.read("LINESTRING (130 240, 650 240)"));
LineStringAPtr convexHull(dynamic_cast_auto_ptr<LineString>(hullGeom));
ensure(0 != convexHull.get());
ensure( convexHull->equalsExact(geom->convexHull()) );
}
// 3 - Test convex hull of multipoint
template<>
template<>
void object::test<3>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr geom(reader_.read("MULTIPOINT (0 0, 0 0, 10 0)"));
ensure(0 != geom.get());
GeometryAPtr hullGeom(reader_.read("LINESTRING (0 0, 10 0)"));
LineStringAPtr convexHull(dynamic_cast_auto_ptr<LineString>(hullGeom));
ensure(0 != convexHull.get());
ensure( convexHull->equalsExact(geom->convexHull()) );
}
// 4 - Test convex hull of multipoint
template<>
template<>
void object::test<4>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr geom(reader_.read("MULTIPOINT (0 0, 10 0, 10 0)"));
ensure(0 != geom.get());
GeometryAPtr hullGeom(reader_.read("LINESTRING (0 0, 10 0)"));
LineStringAPtr convexHull(dynamic_cast_auto_ptr<LineString>(hullGeom));
ensure(0 != convexHull.get());
ensure( convexHull->equalsExact(geom->convexHull()) );
}
// 5 - Test convex hull of multipoint
template<>
template<>
void object::test<5>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr geom(reader_.read("MULTIPOINT (0 0, 5 0, 10 0)"));
ensure(0 != geom.get());
GeometryAPtr hullGeom(reader_.read("LINESTRING (0 0, 10 0)"));
LineStringAPtr convexHull(dynamic_cast_auto_ptr<LineString>(hullGeom));
ensure(0 != convexHull.get());
ensure( convexHull->equalsExact(geom->convexHull()) );
}
// 6 - Test convex hull of multipoint exported to string form
template<>
template<>
void object::test<6>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr geom(reader_.read("MULTIPOINT (0 0, 5 1, 10 0)"));
ensure(0 != geom.get());
GeometryAPtr hullGeom(geom->convexHull());
ensure(0 != hullGeom.get());
GeometryAPtr expectedHull(reader_.read("POLYGON ((0 0, 5 1, 10 0, 0 0))"));
ensure(0 != expectedHull.get());
ensure_equals( hullGeom->toString(), expectedHull->toString() );
}
// 7 - Test convex hull of multipoint
template<>
template<>
void object::test<7>()
{
using geos::geom::LineString;
using utility::dynamic_cast_auto_ptr;
GeometryAPtr geom(reader_.read("MULTIPOINT (0 0, 0 0, 5 0, 5 0, 10 0, 10 0)"));
ensure(0 != geom.get());
GeometryAPtr hullGeom(reader_.read("LINESTRING (0 0, 10 0)"));
LineStringAPtr convexHull(dynamic_cast_auto_ptr<LineString>(hullGeom));
ensure(0 != convexHull.get());
ensure( convexHull->equalsExact(geom->convexHull()) );
}
} // namespace tut
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