public string Write(ISpatial4nShape geometry)
{
if (ReferenceEquals(null, geometry))
{
return(null);
}
string result;
if (TryWritePoint(geometry, out result))
{
return(result);
}
if (TryWriteCircle(geometry, out result))
{
return(result);
}
if (TryWriteEnvelope(geometry, out result))
{
return(result);
}
var wkt = geometry as IOgcGeometry;
if (wkt != null)
{
return(wkt.ToWktString(_wktWriterSettings));
}
throw new SerializationException("Object of type " + geometry.GetType().Name + " is not supported by Spatial4n.");
}
private bool TryWriteEnvelope(ISpatial4nShape shape, out string result)
{
var envelope = shape as Envelope;
if (envelope != null)
{
result = string.Format(CultureInfo.InvariantCulture, "{0:F6} {1:F6} {2:F6} {3:F6}", envelope.MinLon,
envelope.MinLat, envelope.MaxLon, envelope.MaxLat);
return true;
}
result = default(string);
return false;
}
private bool TryWriteEnvelope(ISpatial4nShape shape, out string result)
{
var envelope = shape as Envelope;
if (envelope != null)
{
result = string.Format(CultureInfo.InvariantCulture, "{0:F6} {1:F6} {2:F6} {3:F6}", envelope.MinLon,
envelope.MinLat, envelope.MaxLon, envelope.MaxLat);
return(true);
}
result = default(string);
return(false);
}
private bool TryWritePoint(ISpatial4nShape shape, out string result)
{
var point = shape as Point;
if (point != null)
{
if (point.IsEmpty)
result = default(string);
else
result = string.Format(CultureInfo.InvariantCulture, "{0:F6} {1:F6}", point.Coordinate.Longitude, point.Coordinate.Latitude);
return true;
}
result = default(string);
return false;
}
private bool TryWriteCircle(ISpatial4nShape shape, out string result)
{
var circle = shape as Circle;
if (circle != null)
{
if (circle.IsEmpty)
result = default(string);
else
result = string.Format(CultureInfo.InvariantCulture, "CIRCLE({0:F6} {1:F6} d={2:F6})", circle.Center.Longitude, circle.Center.Latitude, ConvertCircleRadius(circle.Radius));
return true;
}
result = default(string);
return false;
}
private bool TryReadGeoPoint(string value, out ISpatial4nShape result)
{
var match = Regex.Match(value,
@"^ \s* ([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s* , \s* ([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s* $",
RegexOptions.IgnorePatternWhitespace | RegexOptions.IgnoreCase);
if (match.Success)
{
result = new Point(
double.Parse(match.Groups[1].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[2].Value, CultureInfo.InvariantCulture)
);
return true;
}
result = null;
return false;
}
private bool TryReadCircle(string value, out ISpatial4nShape result)
{
var match = Regex.Match(value,
@"Circle \s* \( \s* ([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s+ ([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s+ d=([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s* \)",
RegexOptions.IgnorePatternWhitespace | RegexOptions.IgnoreCase);
if (match.Success)
{
result = new Circle(new Coordinate(
double.Parse(match.Groups[2].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[1].Value, CultureInfo.InvariantCulture)),
ConvertCircleRadius(double.Parse(match.Groups[3].Value, CultureInfo.InvariantCulture)));
return true;
}
result = null;
return false;
}
private bool TryReadPoint(string value, out ISpatial4nShape result)
{
var match = Regex.Match(value,
@"^ \s* (-?\d+.\d+?) \s+ (-?\d+.\d+?) \s* $",
RegexOptions.IgnorePatternWhitespace | RegexOptions.IgnoreCase);
if (match.Success)
{
result = new Point(
double.Parse(match.Groups[2].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[1].Value, CultureInfo.InvariantCulture)
);
return(true);
}
result = null;
return(false);
}
private bool TryReadCircle(string value, out ISpatial4nShape result)
{
var match = Regex.Match(value,
@"Circle \s* \( \s* ([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s+ ([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s+ d=([+-]?(?:\d+\.?\d*|\d*\.?\d+)) \s* \)",
RegexOptions.IgnorePatternWhitespace | RegexOptions.IgnoreCase);
if (match.Success)
{
result = new Circle(new Coordinate(
double.Parse(match.Groups[2].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[1].Value, CultureInfo.InvariantCulture)),
ConvertCircleRadius(double.Parse(match.Groups[3].Value, CultureInfo.InvariantCulture)));
return(true);
}
result = null;
return(false);
}
private bool TryWriteCircle(ISpatial4nShape shape, out string result)
{
var circle = shape as Circle;
if (circle != null)
{
if (circle.IsEmpty)
{
result = default(string);
}
else
{
result = string.Format(CultureInfo.InvariantCulture, "CIRCLE({0:F6} {1:F6} d={2:F6})", circle.Center.Longitude, circle.Center.Latitude, ConvertCircleRadius(circle.Radius));
}
return(true);
}
result = default(string);
return(false);
}
private bool TryWritePoint(ISpatial4nShape shape, out string result)
{
var point = shape as Point;
if (point != null)
{
if (point.IsEmpty)
{
result = default(string);
}
else
{
result = string.Format(CultureInfo.InvariantCulture, "{0:F6} {1:F6}", point.Coordinate.Longitude, point.Coordinate.Latitude);
}
return(true);
}
result = default(string);
return(false);
}
private bool TryReadEnvelope(string value, out ISpatial4nShape result)
{
var match = Regex.Match(value,
@"^ \s* (-?\d+.\d+?) \s+ (-?\d+.\d+?) \s+ (-?\d+.\d+?) \s+ (-?\d+.\d+?) \s* $",
RegexOptions.IgnorePatternWhitespace | RegexOptions.IgnoreCase);
if (match.Success)
{
result = new Envelope(
double.Parse(match.Groups[2].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[1].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[4].Value, CultureInfo.InvariantCulture),
double.Parse(match.Groups[3].Value, CultureInfo.InvariantCulture)
);
return true;
}
result = null;
return false;
}
public string Write(ISpatial4nShape geometry)
{
if (ReferenceEquals(null, geometry))
return null;
string result;
if (TryWritePoint(geometry, out result))
return result;
if (TryWriteCircle(geometry, out result))
return result;
if (TryWriteEnvelope(geometry, out result))
return result;
var wkt = geometry as IOgcGeometry;
if (wkt != null)
return wkt.ToWktString(_wktWriterSettings);
throw new SerializationException("Object of type " + geometry.GetType().Name + " is not supported by Spatial4n.");
}
