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// $Id: TopologyPreservingSimplifierTest.cpp 1820 2006-09-06 16:54:23Z mloskot $
//
// Test Suite for geos::simplify::TopologyPreservingSimplifier
// TUT
#include <tut.h>
#include "utility.h"
// GEOS
#include <geos/io/WKTReader.h>
#include <geos/geom/PrecisionModel.h>
#include <geos/geom/GeometryFactory.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/LineString.h>
#include <geos/simplify/TopologyPreservingSimplifier.h>
// C++ SL
#include <string>
#include <memory>
namespace tut
{
using namespace geos::simplify;
//
// Test Group
//
// Common data used by tests
struct test_tpsimp_data
{
geos::geom::PrecisionModel pm;
geos::geom::GeometryFactory gf;
geos::io::WKTReader wktreader;
typedef geos::geom::Geometry::AutoPtr GeomPtr;
test_tpsimp_data()
:
pm(1.0),
gf(&pm),
wktreader(&gf)
{}
};
typedef test_group<test_tpsimp_data> group;
typedef group::object object;
group test_tpsimp_group("geos::simplify::TopologyPreservingSimplifier");
//
// Test Cases
//
// PolygonNoReduction
template<>
template<>
void object::test<1>()
{
std::string wkt("POLYGON((20 220, 40 220, 60 220, 80 220, \
100 220, 120 220, 140 220, 140 180, 100 180, \
60 180, 20 180, 20 220))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( simplified->equals(g.get()) );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// PolygonNoReductionWithConflicts
template<>
template<>
void object::test<2>()
{
std::string wkt("POLYGON ((40 240, 160 241, 280 240, 280 160, \
160 240, 40 140, 40 240))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( "Topology has been changed by simplification!", simplified->equals(g.get()) );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// PolygonWithTouchingHole
template<>
template<>
void object::test<3>()
{
std::string wkt("POLYGON ((80 200, 240 200, 240 60, 80 60, 80 200), \
(120 120, 220 120, 180 199, 160 200, 140 199, 120 120))");
std::string wkt_expected("POLYGON ((80 200, 240 200, 240 60, 80 60, 80 200), \
(120 120, 220 120, 180 199, 160 200, 140 199, 120 120))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
GeomPtr g_expected(wktreader.read(wkt_expected));
ensure( g_expected->equalsExact(simplified.get()) );
}
// FlattishPolygon
template<>
template<>
void object::test<4>()
{
std::string wkt("POLYGON ((0 0, 50 0, 53 0, 55 0, 100 0, \
70 1, 60 1, 50 1, 40 1, 0 0))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// PolygonWithFlattishHole
template<>
template<>
void object::test<5>()
{
std::string wkt("POLYGON ((0 0, 0 200, 200 200, 200 0, 0 0), \
(140 40, 90 95, 40 160, 95 100, 140 40))");
GeomPtr g(wktreader.read(wkt));
GeomPtr g_expected(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
ensure( g_expected->equalsExact(simplified.get()) );
}
// TinySquare
template<>
template<>
void object::test<6>()
{
std::string wkt("POLYGON ((0 5, 5 5, 5 0, 0 0, 0 1, 0 5))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// TinyLineString
template<>
template<>
void object::test<7>()
{
std::string wkt("LINESTRING (0 5, 1 5, 2 5, 5 5)");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// MultiPoint
template<>
template<>
void object::test<8>()
{
std::string wkt("MULTIPOINT(80 200, 240 200, 240 60, \
80 60, 80 200, 140 199, 120 120)");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// MultiLineString
template<>
template<>
void object::test<9>()
{
std::string wkt("MULTILINESTRING((0 0, 50 0, 70 0, 80 0, 100 0), \
(0 0, 50 1, 60 1, 100 0))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
// GeometryCollection
template<>
template<>
void object::test<10>()
{
std::string wkt("GEOMETRYCOLLECTION ( \
MULTIPOINT (80 200, 240 200, 240 60, 80 60, 80 200, 140 199, 120 120), \
POLYGON ((80 200, 240 200, 240 60, 80 60, 80 200)), \
LINESTRING (80 200, 240 200, 240 60, 80 60, 80 200, 140 199, 120 120))");
GeomPtr g(wktreader.read(wkt));
GeomPtr simplified = TopologyPreservingSimplifier::simplify(g.get(), 10.0);
ensure( "Simplified geometry is invalid!", simplified->isValid() );
ensure( utility::isSameStructure(g.get(), simplified.get()) );
}
} // namespace tut
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