/// <summary>
/// Calculate the difference between two ranges, i.e. X - Y.
/// </summary>
/// <param name="x">The first range to subtract from.</param>
/// <param name="y">The second range to subtract with.</param>
/// <returns>Between 0 and 2 remaining ranges.</returns>
public static FFloatRange[] Difference(FFloatRange x, FFloatRange y)
{
if (x.Overlaps(y))
{
FFloatRange lowerRange = new FFloatRange(x.LowerBound, FFloatRangeBound.FlipInclusion(y.LowerBound));
FFloatRange upperRange = new FFloatRange(FFloatRangeBound.FlipInclusion(y.UpperBound), x.UpperBound);
if (!lowerRange.IsEmpty())
{
if (!upperRange.IsEmpty())
{
return(new FFloatRange[] { lowerRange, upperRange });
}
else
{
return(new FFloatRange[] { lowerRange });
}
}
if (!upperRange.IsEmpty())
{
return(new FFloatRange[] { upperRange });
}
return(new FFloatRange[0]);
}
else
{
return(new FFloatRange[] { x });
}
}