/// <summary>
/// Get the perimeter of the polygon.
/// May be oprimized for PolyAdv
/// </summary>
/// <param name="poly"></param>
/// <returns></returns>
public static float GetPerimeter(this IPoly poly)
{
if (poly is IPolyExtensionPerimeter)
{
return(((IPolyExtensionPerimeter)poly).AdvGetPerimeter());
}
else if (poly is IPolyForwarder)
{
return(((IPolyForwarder)poly).GetPoly().GetPerimeter());
}
else
{
return(poly.CalcPerimeter());
}
}