public void CalculateDistance_LineCoordinate_ReturnsDistanceToEndPointIfPointIsOutsideLineSegment2()
{
Coordinate a = new Coordinate(0, 0);
Coordinate b = new Coordinate(90, 0);
Coordinate c = new Coordinate(5, 45);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c, a, b, LineMode.LineSegment);
double expectedDistance = target.CalculateDistance(a, c);
Assert.InRange <double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
public void CalculateDistance_CoordinateCoordinate_Returns0ForSameCoordinate()
{
Coordinate c = new Coordinate(10.1, 100.2);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c, c);
Assert.Equal(0, distance);
}
public void CalculateDsitance_CoordinateCoordinate_CalculateDistancesAcross180DegBoundary()
{
Coordinate c1 = new Coordinate(-135, 0);
Coordinate c2 = new Coordinate(135, 0);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c1, c2);
double expectedDistance = Math.PI * 2 * Sphere2DCalculator.EarthRadius / 4;
Assert.InRange <double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
public void CalculateDistance_CoordinateCoordinate_ReturnsDistanceOf2Points()
{
Coordinate c1 = new Coordinate(0, 0);
Coordinate c2 = new Coordinate(0, 90);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c1, c2);
double expectedDistance = Math.PI * 2 * Sphere2DCalculator.EarthRadius / 4;
Assert.InRange <double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
public void CalculateDistance_LineCoordinate_ReturnsDistanceToLineSegment()
{
Coordinate a = new Coordinate(0, 0);
Coordinate b = new Coordinate(90, 0);
Coordinate c = new Coordinate(45, 45);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c, a, b, LineMode.LineSegment);
double expectedDistance = Math.PI * 2 * Sphere2DCalculator.EarthRadius / 8;
Assert.InRange <double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}