internal Geometry Difference(Extents lhs, Extents rhs)
{
Extents union = new Extents(_factory, lhs, rhs);
List <Extents> components = new List <Extents>();
components.AddRange(union.Split(rhs.LowerLeft));
components.AddRange(union.Split(rhs.LowerRight));
components.AddRange(union.Split(rhs.UpperLeft));
components.AddRange(union.Split(rhs.UpperRight));
for (Int32 i = components.Count - 1; i >= 0; i--)
{
if (components[i].IsEmpty || rhs.Overlaps(components[i]))
{
components.RemoveAt(i);
}
}
Extents diff = Extents.Join(_factory, components.ToArray());
if (diff.Contains(rhs))
{
return(lhs.ToGeometry());
}
else
{
return(diff.ToGeometry());
}
}
/// <summary>
/// Checks whether this point intersects an <see cref="Extents"/>
/// </summary>
/// <param name="box">Box</param>
/// <returns>True if they intersect</returns>
public Boolean Intersects(Extents box)
{
return(box.Contains(this));
}
