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// $Id: isCCWTest.cpp 1993 2007-06-10 11:53:49Z mloskot $
//
// Test Suite for CGAlgorithms::isCCW() function
// Ported from JTS junit/algorithm/IsCCWTest.java
// tut
#include <tut.h>
// geos
#include <geos/algorithm/CGAlgorithms.h>
#include <geos/geom/Polygon.h>
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/io/WKTReader.h>
// std
#include <string>
#include <memory>
using namespace geos::algorithm;
namespace tut
{
//
// Test Group
//
struct test_isccw_data
{
typedef std::auto_ptr<geos::geom::Geometry> GeometryPtr;
geos::io::WKTReader reader_;
test_isccw_data() {}
};
typedef test_group<test_isccw_data> group;
typedef group::object object;
group test_isccw_group("geos::algorithm::CGAlgorithms::isCCW");
//
// Test Cases
//
// 1 - Test if coordinates of polygon are counter-clockwise oriented
template<>
template<>
void object::test<1>()
{
const std::string wkt("POLYGON ((60 180, 140 240, 140 240, 140 240, 200 180, 120 120, 60 180))");
GeometryPtr geom(reader_.read(wkt));
bool isCCW = CGAlgorithms::isCCW(geom->getCoordinates());
ensure_equals( false, isCCW );
}
// 2 - Test if coordinates of polygon are counter-clockwise oriented
template<>
template<>
void object::test<2>()
{
const std::string wkt("POLYGON ((60 180, 140 120, 100 180, 140 240, 60 180))");
GeometryPtr geom(reader_.read(wkt));
bool isCCW = CGAlgorithms::isCCW(geom->getCoordinates());
ensure_equals( true, isCCW );
}
// 3 - Test the same polygon as in test No 2 but with duplicated top point
template<>
template<>
void object::test<3>()
{
const std::string wkt("POLYGON ((60 180, 140 120, 100 180, 140 240, 140 240, 60 180))");
GeometryPtr geom(reader_.read(wkt));
bool isCCW = CGAlgorithms::isCCW(geom->getCoordinates());
ensure_equals( true, isCCW );
}
} // namespace tut
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