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// $Id: computeOrientationTest.cpp 1993 2007-06-10 11:53:49Z mloskot $
//
// Test Suite for CGAlgorithms::computeOrientation() function
// Ported from JTS junit/algorithm/ComputeOrientationTest.java
// tut
#include <tut.h>
// geos
#include <geos/algorithm/CGAlgorithms.h>
#include <geos/geom/Coordinate.h>
#include <geos/geom/CoordinateSequence.h>
#include <geos/geom/CoordinateArraySequence.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/Polygon.h>
#include <geos/io/WKTReader.h>
// std
#include <string>
#include <memory>
using namespace geos::geom;
using namespace geos::algorithm;
namespace tut
{
//
// Test Group
//
struct test_computeorientation_data
{
geos::io::WKTReader reader_;
test_computeorientation_data() {}
};
typedef test_group<test_computeorientation_data> group;
typedef group::object object;
group test_computeorientation_group("geos::algorithm::CGAlgorithms::computeOrientation");
//
// Test Cases
//
// 1 - Test CCW orientation
template<>
template<>
void object::test<1>()
{
const std::string wkt("LINESTRING ( 0 0, 0 1, 1 1)");
Geometry::AutoPtr geom(reader_.read(wkt));
CoordinateSequence::AutoPtr pts(geom->getCoordinates());
int const a = CGAlgorithms::computeOrientation(pts->getAt(0), pts->getAt(1), pts->getAt(2));
int const b = CGAlgorithms::computeOrientation(pts->getAt(0), pts->getAt(1), pts->getAt(2));
int const c = CGAlgorithms::computeOrientation(pts->getAt(0), pts->getAt(1), pts->getAt(2));
ensure_equals( a, b );
ensure_equals( a, c );
}
// 2 - Test CCW orientation
template<>
template<>
void object::test<2>()
{
Coordinate c1(1.0000000000004998, -7.989685402102996);
Coordinate c2(10.0, -7.004368924503866);
Coordinate c3(1.0000000000005, -7.989685402102996);
CoordinateArraySequence pts;
pts.add(c1);
pts.add(c2);
pts.add(c3);
int const a = CGAlgorithms::computeOrientation(pts[0], pts[1], pts[2]);
int const b = CGAlgorithms::computeOrientation(pts[0], pts[1], pts[2]);
int const c = CGAlgorithms::computeOrientation(pts[0], pts[1], pts[2]);
ensure_equals( a, b );
ensure_equals( a, c );
}
} // namespace tut
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