/// <summary>
/// Return the union of two contiguous ranges.
///
/// A union is a range or series of ranges that contains both ranges.
/// </summary>
/// <param name="x">The first range.</param>
/// <param name="y">The second range.</param>
/// <returns>The union, or both ranges if the two ranges are not contiguous, or no ranges if both ranges are empty.</returns>
public static FInt32Range[] Union(FInt32Range x, FInt32Range y)
{
if (x.Contains(y))
{
return(new FInt32Range[]
{
new FInt32Range(
FInt32RangeBound.MinLower(x.LowerBound, y.LowerBound),
FInt32RangeBound.MaxUpper(x.UpperBound, y.UpperBound))
});
}
else
{
if (!x.IsEmpty())
{
if (!y.IsEmpty())
{
return(new FInt32Range[] { x, y });
}
else
{
return(new FInt32Range[] { x });
}
}
if (!y.IsEmpty())
{
return(new FInt32Range[] { y });
}
return(new FInt32Range[0]);
}
}
/// <summary>
/// Compute the hull of two ranges.
///
/// The hull is the smallest range that contains both ranges.
/// </summary>
/// <param name="x">The first range.</param>
/// <param name="y">The second range.</param>
/// <returns>The hull.</returns>
public static FInt32Range Hull(FInt32Range x, FInt32Range y)
{
if (x.IsEmpty())
{
return(y);
}
if (y.IsEmpty())
{
return(x);
}
return(new FInt32Range(
FInt32RangeBound.MinLower(x.LowerBound, y.LowerBound),
FInt32RangeBound.MaxUpper(x.UpperBound, y.UpperBound)));
}
/// <summary>
/// Check whether this range contains another range.
/// </summary>
/// <param name="other">The range to check.</param>
/// <returns>true if the range contains the other range, false otherwise.</returns>
public bool Contains(FInt32Range other)
{
return((FInt32RangeBound.MinLower(LowerBound, other.LowerBound) == LowerBound) &&
(FInt32RangeBound.MaxUpper(UpperBound, other.UpperBound) == UpperBound));
}
/// <summary>
/// Check whether this range contains the specified element.
/// </summary>
/// <param name="element">The element to check.</param>
/// <returns>true if the range contains the element, false otherwise.</returns>
public bool Contains(int element)
{
return((FInt32RangeBound.MinLower(LowerBound, new FInt32RangeBound(element)) == LowerBound) &&
(FInt32RangeBound.MaxUpper(UpperBound, new FInt32RangeBound(element)) == UpperBound));
}
