public static DbGeography ConvertFrom(Microsoft.Spatial.Geography geo)
{
string geographyEwkt = geo.ToString();
int semicolon = geographyEwkt.IndexOf(';');
string geographyWkt = geographyEwkt.Substring(semicolon + 1);
return(DbGeography.FromText(geographyWkt, int.Parse(geo.CoordinateSystem.Id)));
}
/// <summary>
/// Check for basic equality due to emptyness, nullness, referential equality and difference in coordinate system
/// </summary>
/// <param name="other">The other geography</param>
/// <returns>Boolean value indicating equality, or null to indicate inconclusion</returns>
internal bool?BaseEquals(Geography other)
{
if (other == null)
{
return(false);
}
if (ReferenceEquals(this, other))
{
return(true);
}
if (!this.coordinateSystem.Equals(other.coordinateSystem))
{
return(false);
}
if (this.IsEmpty || other.IsEmpty)
{
return(this.IsEmpty && other.IsEmpty);
}
return(null);
}
/// <summary>Gets the hash code.</summary>
/// <returns>The hash code.</returns>
public override int GetHashCode()
{
return(Geography.ComputeHashCodeFor(this.CoordinateSystem, this.Points));
}
/// <summary>Determines if geography point and polygon will intersect.</summary>
/// <returns>The operation result.</returns>
/// <param name="operand1">The first operand.</param>
/// <param name="operand2">The second operand.</param>
public static bool?Intersects(this Geography operand1, Geography operand2)
{
return(OperationsFor(operand1, operand2).IfValidReturningNullable(ops => ops.Intersects(operand1, operand2)));
}
/// <summary>Determines the Length of the geography LineString.</summary>
/// <returns>The operation result.</returns>
/// <param name="operand">The LineString operand.</param>
public static double?Length(this Geography operand)
{
return(OperationsFor(operand).IfValidReturningNullable(ops => ops.Length(operand)));
}
/// <summary>Determines the distance of the geography.</summary>
/// <returns>The operation result.</returns>
/// <param name="operand1">The first operand.</param>
/// <param name="operand2">The second operand.</param>
public static double?Distance(this Geography operand1, Geography operand2)
{
return(OperationsFor(operand1, operand2).IfValidReturningNullable(ops => ops.Distance(operand1, operand2)));
}
/// <summary>Indicates a Geography Intersects() method.</summary>
/// <returns>The operation result.</returns>
/// <param name="operand1">The Operand 1, point.</param>
/// <param name="operand2">The Operand 2, polygon.</param>
public virtual bool Intersects(Geography operand1, Geography operand2)
{
throw new NotImplementedException();
}
/// <summary>Indicates a Geography LineString's length.</summary>
/// <returns>The operation result.</returns>
/// <param name="operand">The Operand.</param>
public virtual double Length(Geography operand)
{
throw new NotImplementedException();
}
/// <summary>Indicates a Geography Distance.</summary>
/// <returns>The operation result.</returns>
/// <param name="operand1">The Operand 1.</param>
/// <param name="operand2">The Operand 2.</param>
public virtual double Distance(Geography operand1, Geography operand2)
{
throw new NotImplementedException();
}
