/// <summary>
/// Determines the intersection of an <see cref="IntervalCollection<T>"/>.
/// </summary>
/// <typeparam name="T">The value type of the intervals.</typeparam>
/// <param name="collection">A collection of <see cref="Interval<T>"/>.</param>
/// <returns>An <see cref="Interval<T>"/> that contains elements belonging to all intervals in the <paramref name="collection"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="collection"/> is <c>null</c>.</exception>
internal static Interval <T> IntersectionOf <T>(IntervalCollection <T> collection)
{
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (collection.Count == 0)
{
return(Interval.Empty <T>());
}
var a = collection[0];
for (int i = 1; i < collection.Count; i++)
{
var b = collection[i];
a = Interval.IntersectionOf(a, b);
}
return(a);
}
/// <summary>
/// Determines the intersection of this instance with the <paramref name="other"/> one.
/// </summary>
/// <example>
/// <img src="../Images/Interval/Venn_Intersection.png" alt="Intersection"/>
/// </example>
/// <param name="other">Another <see cref="Interval<T>"/>.</param>
/// <returns>An <see cref="Interval<T>"/> that contains all elements of this instance
/// that also belong to the <paramref name="other"/> one (or equivalently, all elements of the <paramref name="other"/> one
/// that also belong to this instance), but no other elements.</returns>
/// <seealso href="http://en.wikipedia.org/wiki/Intersection_(set_theory)">Intersection (set theory)</seealso>
public Interval <T> IntersectionWith(Interval <T> other)
{
return(Interval.IntersectionOf(this, other));
}