/// <summary>
/// Объединяет параллелепипеды, если возможно
/// </summary>
public static SpatialBox <TContext> Merge <TContext>(this SpatialBox <TContext> instance, SpatialBox <TContext> other)
where TContext : class
{
var areOffersEqual = instance.OfferInterval.EqualsTo(other.OfferInterval);
var areNightsEqual = instance.NightInterval.EqualsTo(other.NightInterval);
var areSeasonsEqual = instance.SeasonInterval.EqualsTo(other.SeasonInterval);
var offerMerged = instance.OfferInterval.Merge(other.OfferInterval, (x, i) => x.AddDays(i));
var nightMerged = instance.NightInterval.Merge(other.NightInterval, (x, i) => (short)(x + i));
var seasonMerged = instance.SeasonInterval.Merge(other.SeasonInterval, (x, i) => x.AddDays(i));
if (offerMerged != null && areNightsEqual && areSeasonsEqual)
{
return(instance.Copy(offerInterval: offerMerged));
}
if (areOffersEqual && nightMerged != null && areSeasonsEqual)
{
return(instance.Copy(nightInterval: nightMerged));
}
if (areOffersEqual && areNightsEqual && seasonMerged != null)
{
return(instance.Copy(seasonInterval: seasonMerged));
}
return(null);
}
/// <summary>
/// Находит остатки от пересечения текущего куба с посторонним кубом
/// </summary>
public static List <SpatialBox <TContext> > Difference <TContext>(this SpatialBox <TContext> instance, SpatialBox <TContext> other)
where TContext : class
{
var intersection = instance.Intersect(other, (x, y) => null); // we do not need context of intersection
if (intersection == null)
{
return new List <SpatialBox <TContext> > {
instance
}
}
;
var result = new List <SpatialBox <TContext> >();
result.AddRange(
instance.OfferInterval.Difference(intersection.OfferInterval, (x, i) => x.AddDays(i))
.Select(x => instance.Copy(offerInterval: x)).ToList());
result.AddRange(
instance.NightInterval.Difference(intersection.NightInterval, (x, i) => (short)(x + i))
.Select(x => instance.Copy(offerInterval: intersection.OfferInterval, nightInterval: x)).ToList());
result.AddRange(
instance.SeasonInterval.Difference(intersection.SeasonInterval, (x, i) => x.AddDays(i))
.Select(x => instance.Copy(offerInterval: intersection.OfferInterval, nightInterval: intersection.NightInterval, seasonInterval: x)).ToList());
return(result);
}
/// <summary>
/// Находит пересечение текущего куба и постороннего куба
/// </summary>
public static SpatialBox <TContext> Intersect <TContext>(this SpatialBox <TContext> instance, SpatialBox <TContext> other, Func <TContext, TContext, TContext> combiner)
where TContext : class
{
var offerIntersect = instance.OfferInterval.Intersect(other.OfferInterval);
var nightIntersect = instance.NightInterval.Intersect(other.NightInterval);
var seasonIntersect = instance.SeasonInterval.Intersect(other.SeasonInterval);
if (offerIntersect == null || nightIntersect == null || seasonIntersect == null)
{
return(null);
}
return(new SpatialBox <TContext>(offerIntersect, nightIntersect, seasonIntersect, combiner(instance.Context, other.Context)));
}
/// <summary>
/// Находит остатки от пересечения текущего списка непересекающихся кубов с посторонним кубом
/// </summary>
public static List <SpatialBox <TContext> > Difference <TContext>(this List <SpatialBox <TContext> > instances, SpatialBox <TContext> other)
where TContext : class
{
return(instances.SelectMany(x => x.Difference(other)).Where(x => x != null).ToList());
}
/// <summary>
/// Находит пересечение текущего куба со списком посторонних различающихся кубов
/// </summary>
public static List <SpatialBox <TContext> > Intersect <TContext>(this SpatialBox <TContext> instance, List <SpatialBox <TContext> > others, Func <TContext, TContext, TContext> combiner)
where TContext : class
{
return(others.Intersect(instance, combiner));
}
/// <summary>
/// Находит пересечение текущего списка различающихся кубов с посторонним кубом
/// </summary>
public static List <SpatialBox <TContext> > Intersect <TContext>(this List <SpatialBox <TContext> > instances, SpatialBox <TContext> other, Func <TContext, TContext, TContext> combiner)
where TContext : class
{
return(instances.Select(x => x.Intersect(other, combiner)).Where(x => x != null).ToList());
}
/// <summary>
/// Объединяет непересекающиеся параллелепипеды
/// </summary>
public static List <SpatialBox <TContext> > Join <TContext>(this List <SpatialBox <TContext> > instances, SpatialBox <TContext> other, Func <TContext, TContext, TContext> combiner)
where TContext : class
{
var differences = instances.Difference(other);
var intersections = instances.Intersect(other, combiner);
var otherParts = new List <SpatialBox <TContext> > {
other
};
foreach (var intersection in intersections)
{
otherParts = otherParts.Difference(intersection);
}
var result = differences.Concat(intersections).Concat(otherParts).ToList();
return(result);
}
/// <summary>
/// Находит остатки от пересечения текущего кубоа с посторонним списком непересекающихся кубов
/// </summary>
public static List <SpatialBox <TContext> > Difference <TContext>(this SpatialBox <TContext> instance, List <SpatialBox <TContext> > others)
where TContext : class
{
return(others.Aggregate(instance.ToList(), (x, y) => x.Difference(y)).ToList());
}
