Looks like GeoGeometry.overlap function is not perfect about geogeometry HOT 4 CLOSED

	double[][] p2overlapping = new double[][] {
			{51, 16},
			{52, 16},
			{52, 10},
			{51, 10}
	};
	double[][] p3outside = new double[][] {
			{60, 15},
			{63, 15},
			{63, 11},
			{60, 11}
	};
	double[][] p4inside = new double[][] {
			{51, 14},
			{52, 14},
			{52, 12},
			{51, 12}
	};
	// polygon which overlaps with p3 but does not have center or any vertexes inside the p3
	double[][] p5overlapP3 = new double[][] {
			{60.3, 10},
			{60.3, 22},
			{61, 22},
			{61, 10}
	};
	// polygon which lays around the p3 without overlapping
	// polygon 6 is concave with its center lying outside of p6 but inside the p3
	double[][] p6aroundP3 = new double[][] {
		{	63.39152174400882 , 16.3916015625 },
		{	63.38167869302983 , 17.2705078125 },
		{	64.30182213914463 , 17.02880859375 },
		{	64.24459476798195 , 8.349609375 },
		{	58.790978406215565, 8.349609375 },
		{	58.83649009392136 , 16.040039062499996  },
		{	59.40036514079251 , 16.171875 },
		{	59.377988012638895, 9.3603515625 },
		{	63.763065186029074, 9.3603515625 },
		{	63.918058296491104, 16.34765625 }
	};

	Assert.assertTrue(GeoGeometry.overlap(polygon,polygon));

	Assert.assertTrue(GeoGeometry.overlap(polygon, p2overlapping));
	Assert.assertTrue(GeoGeometry.overlap(p2overlapping,polygon));

	Assert.assertFalse(GeoGeometry.overlap(p3outside,polygon));
	
	Assert.assertTrue(GeoGeometry.overlap(polygon,p4inside));
	Assert.assertTrue(GeoGeometry.overlap(p4inside,polygon));

	// with overlap logic which check only center and vertexes this test fails
	// edge intersections should be checked as well
	Assert.assertTrue(GeoGeometry.overlap(p3outside,p5overlapP3));
	Assert.assertTrue(GeoGeometry.overlap(p5overlapP3, p3outside));

	// this test also fails because of the center logic.
	// polygon 6 is concave with its center lying outside of p6 but inside the p3
	// they do not overlap
	Assert.assertFalse(GeoGeometry.overlap(p3outside,p6aroundP3));
	Assert.assertFalse(GeoGeometry.overlap(p6aroundP3, p3outside));
}