public void DistanceTest()
{
// expected distances takes from:
//1. Lowrance HDS7 Gen3
//2. http://edwilliams.org/gccalc.htm
var basePoint = new CoordinatePoint(new Latitude(60, 07.328), new Longitude(32, 18.719));
var two = new CoordinatePoint(new Latitude(60, 12.324), new Longitude(32, 15.530));
//Lowrance HDS7 Gen3
Assert.AreEqual(9710, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 5);
Assert.AreEqual(9710, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 26);
//edwilliams.org
Assert.AreEqual(9735.229, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 25);
Assert.AreEqual(9735.229, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 0.01d); //great accuracy
two = new CoordinatePoint(new Latitude(57, 36.631), new Longitude(29, 44.306));
//Lowrance HDS7 Gen3
Assert.AreEqual(315800, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 200);
Assert.AreEqual(315800, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 1000);
//edwilliams.org
Assert.AreEqual(316682.824, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 700);
Assert.AreEqual(316682.824, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 10);
two = new CoordinatePoint(new Latitude(51, 11.377), new Longitude(44, 14.519));
Assert.AreEqual(1239000, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 700);
Assert.AreEqual(1239000, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 5000);
two = new CoordinatePoint(new Latitude(60, 07.317), new Longitude(32, 18.822));
//Lowrance HDS7 Gen3
Assert.AreEqual(97.3d, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 0.1d);
Assert.AreEqual(97.3d, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 0.4d);
//edwilliams.org
Assert.AreEqual(97.598, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 0.4d);
Assert.AreEqual(97.598, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 0.01d);
two = new CoordinatePoint(new Latitude(60, 07.330), new Longitude(32, 18.716));
Assert.AreEqual(5.1d, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 0.5d);
Assert.AreEqual(5.1d, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 0.5d);
//too poor accuracy with flat method
Assert.AreEqual(5.1d, CoordinatePoint.GetDistanceBetweenPointsOnTheFlat(basePoint, two).GetMeters(), 2);
two = new CoordinatePoint(new Latitude(60, 07.374), new Longitude(32, 18.754));
Assert.AreEqual(90.6d, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 1);
Assert.AreEqual(90.6d, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 0.8d);
two = new CoordinatePoint(new Latitude(60, 07.318), new Longitude(32, 18.734));
Assert.AreEqual(23.2d, CoordinatePoint.GetDistanceBetweenPointsWithHaversine(basePoint, two).GetMeters(), 1);
Assert.AreEqual(23.2d, CoordinatePoint.GetDistanceBetweenPointsOnAnEllipsoid(basePoint, two).GetMeters(), 0.01d);
}
