public GeoLine(double value, GeoLineType lineType, CardinalDirection cardinalDirection)
{
if (lineType == GeoLineType.Latitude)
{
MaxDegrees = 90;
}
else
{
MaxDegrees = 180;
}
if (value < 0 && lineType == GeoLineType.Longitude && cardinalDirection == CardinalDirection.E)
{
throw new ArgumentException("A negative Longitude can only represent Western Meridians.");
}
if (value < 0 && lineType == GeoLineType.Latitude && cardinalDirection == CardinalDirection.N)
{
throw new ArgumentException("A negative Latitude can only represent Southern Parallels.");
}
if (lineType == GeoLineType.Latitude && (cardinalDirection == CardinalDirection.E || cardinalDirection == CardinalDirection.W))
{
throw new ArgumentException("Latitude only measures location relative to North and South.");
}
if (lineType == GeoLineType.Longitude && (cardinalDirection == CardinalDirection.N || cardinalDirection == CardinalDirection.S))
{
throw new ArgumentException("Longitude only measures location relative to East and West.");
}
if (Math.Abs(value) > Math.Abs(MaxDegrees))
{
throw new ArgumentException("Absolute Value of the measurement cannot be greater than the max");
}
var decimalValue = Convert.ToDecimal(value);
decimalValue = Math.Abs(decimalValue);
var degrees = Decimal.Truncate(decimalValue);
decimalValue = (decimalValue - degrees) * 60;
var minutes = Decimal.Truncate(decimalValue);
var seconds = (decimalValue - minutes) * 60;
Degrees = Convert.ToDouble(degrees);
Minutes = Convert.ToDouble(minutes);
Seconds = Convert.ToDouble(seconds);
CardinalDirection = cardinalDirection;
}
public GeoLine(double degrees, double minutes, double seconds, GeoLineType lineType, CardinalDirection cardinalDirection)
{
if (lineType == GeoLineType.Latitude)
{
MaxDegrees = 90;
}
else
{
MaxDegrees = 180;
}
if (degrees < 0 && lineType == GeoLineType.Longitude && cardinalDirection == CardinalDirection.W)
{
throw new ArgumentException("A negative Longitude can only represent Eastern Meridians.");
}
if (degrees < 0 && lineType == GeoLineType.Latitude && cardinalDirection == CardinalDirection.N)
{
throw new ArgumentException("A negative Latitude can only represent Southern Parallels.");
}
if (lineType == GeoLineType.Latitude && (cardinalDirection == CardinalDirection.E || cardinalDirection == CardinalDirection.W))
{
throw new ArgumentException("Latitude only measures location relative to North and South.");
}
if (lineType == GeoLineType.Longitude && (cardinalDirection == CardinalDirection.N || cardinalDirection == CardinalDirection.S))
{
throw new ArgumentException("Longitude only measures location relative to East and West.");
}
if (Math.Abs(degrees) > Math.Abs(MaxDegrees))
{
throw new ArgumentException("Absolute Value of the measurement cannot be greater than the max");
}
Degrees = Math.Abs(degrees);
Minutes = Math.Abs(minutes);
Seconds = Math.Abs(seconds);
CardinalDirection = cardinalDirection;
}
private GeoLine GetGeoLineFromProperties(PropertyItem lineRef, PropertyItem line, GeoLineType lineType)
{
var lineDir = Encoding.ASCII.GetString(lineRef.Value).Substring(0, 1);
CardinalDirection direction = (CardinalDirection)Enum.Parse(typeof(CardinalDirection), lineDir);
var measurements = GetRationalNumbersFromValue(line);
return(new GeoLine(measurements[0], measurements[1], measurements[2], lineType, direction));
}
