private IEnumerable<DecimalGeoCoordinate> BuildLinePoints(double x1, double y1, double x2, double y2, int lineSegments)
{
List<DecimalGeoCoordinate> points = new List<DecimalGeoCoordinate>();
double dx = Math.Abs(x2 - x1);
double dy = Math.Abs(y2 - y1);
DecimalGeoCoordinate startPoint = new DecimalGeoCoordinate(x1, y1);
DecimalGeoCoordinate endPoint = new DecimalGeoCoordinate(x2, y2);
double lineIncrements = startPoint.DistanceTo(endPoint) / lineSegments;
double xIncrement = (x2 > x1) ? dx / lineSegments : -(dx / lineSegments);
double yIncrement = (y2 > y1) ? dy / lineSegments : -(dy / lineSegments);
double currentX = startPoint.Latitude;
double currentY = startPoint.Longitude;
points.Add(startPoint);
if (startPoint == endPoint)
return points;
for (double pointCount = 0; pointCount < lineSegments - 1; pointCount++)
{
currentX += xIncrement;
currentY += yIncrement;
points.Add(new DecimalGeoCoordinate(currentX, currentY));
}
points.Add(endPoint);
return points;
}
public void DistanceTo_PassValidCoordinate_ReturnsCorrectDistance()
{
// Arrange
DecimalGeoCoordinate testCoordinate = new DecimalGeoCoordinate(1.6, 15.0);
_sut = new DecimalGeoCoordinate(11.2, 12.0);
// Act
double distance = _sut.DistanceTo(testCoordinate);
// Assert
Assert.IsTrue(Math.Truncate(distance) == 1117643);
}