/// <summary>
/// Convert linear ring to JSON format.
/// </summary>
/// <param name="linearRing">Linear ring that should be converted.</param>
/// <returns>Linear ring in JSON format.</returns>
public static String GetJson(this WebLinearRing linearRing)
{
if (linearRing.IsNotNull())
{
return(linearRing.Points.GetJson());
}
else
{
return(String.Empty);
}
}
/// <summary>
/// Convert a WebBoundingBox instance into a WebPolygon
/// instance with same geographic area.
/// </summary>
/// <param name="boundingBox">Bounding box.</param>
/// <returns>A WebPolygon instance.</returns>
public static WebPolygon GetPolygon(this WebBoundingBox boundingBox)
{
WebLinearRing linearRing;
WebPolygon polygon;
linearRing = new WebLinearRing();
linearRing.Points = new List <WebPoint>();
linearRing.Points.Add(new WebPoint(boundingBox.Min.X, boundingBox.Min.Y));
linearRing.Points.Add(new WebPoint(boundingBox.Max.X, boundingBox.Min.Y));
linearRing.Points.Add(new WebPoint(boundingBox.Max.X, boundingBox.Max.Y));
linearRing.Points.Add(new WebPoint(boundingBox.Min.X, boundingBox.Max.Y));
linearRing.Points.Add(new WebPoint(boundingBox.Min.X, boundingBox.Min.Y));
polygon = new WebPolygon();
polygon.LinearRings = new List <WebLinearRing>();
polygon.LinearRings.Add(linearRing);
return(polygon);
}
/// <summary>
/// Check that data is valid.
/// </summary>
/// <param name="linearRing">The linear ring.</param>
public static void CheckData(this WebLinearRing linearRing)
{
if (linearRing.IsNotNull())
{
linearRing.Points.CheckNotEmpty("Points");
foreach (WebPoint point in linearRing.Points)
{
point.CheckData();
}
if (linearRing.Points.Count < 3)
{
throw new ArgumentException("A linear ring must contain at least 3 points.");
}
if (!linearRing.Points[0].Equal(linearRing.Points[linearRing.Points.Count - 1]))
{
throw new ArgumentException("First and last point of a linear ring must be the same.");
}
}
}
/// <summary>
/// Get linear ring from SqlGeometry.
/// </summary>
/// <param name="geometryLinearRing">Linear ring geometry.</param>
/// <returns>Linear ring.</returns>
public static WebLinearRing GetLinearRing(this SqlGeometry geometryLinearRing)
{
Int32 pointIndex;
SqlGeometry geometryPoint;
WebLinearRing linearRing;
if (geometryLinearRing.GetGeometryType() != SqlGeometryType.LineString)
{
throw new ArgumentException("Wrong geometry data type in GetLinearRing. Expected type 'LineString', actual type : " + geometryLinearRing.GetGeometryType().ToString());
}
linearRing = new WebLinearRing();
linearRing.Points = new List <WebPoint>();
for (pointIndex = 1; pointIndex <= geometryLinearRing.STNumPoints(); pointIndex++)
{
geometryPoint = geometryLinearRing.STPointN(pointIndex);
linearRing.Points.Add(geometryPoint.GetPoint());
}
return(linearRing);
}
