internal void AddPiece(Piece piece)
{
if (FastAddingMode)
{
Pieces.Add(piece);
return;
}
if (!piece.IsNumeric())
{
if (Pieces.All(p => p != piece))
Pieces.Add(piece);
return;
}
else if (this.Power == PowerLevel.FINITE && piece.Type == Piece.PieceType.ENTITY)
{
var evaled = (piece as OneElementPiece).Evaluated;
if (Pieces.Select(p => (p as OneElementPiece).Evaluated).All(p => p != evaled))
Pieces.Add(piece);
return;
}
var remainders = new List<Piece>{ piece };
foreach (var p in Pieces)
{
if (!p.IsNumeric())
continue;
var newRemainders = new List<Piece>();
foreach (var rem in remainders)
newRemainders.AddRange(PieceFunctions.Subtract(rem, p));
remainders = newRemainders;
}
Pieces.AddRange(remainders);
}
public void PieceSubtraction1()
{
var p = Piece.Interval(new ComplexNumber(-1, -1), new ComplexNumber(2, 2)).AsInterval().SetLeftClosed(true, true).SetRightClosed(true, true);
var left = PieceFunctions.Subtract(p, new OneElementPiece(0));
Assert.IsFalse(In(0, left));
}
public void PieceSubtraction2()
{
// [3; 4]
var p = Piece.Interval(3, 4).AsInterval().SetLeftClosed(true).SetRightClosed(true);
// [3; 4)
var p1 = Piece.Interval(3, 4).AsInterval().SetLeftClosed(true).SetRightClosed(false);
var left = PieceFunctions.Subtract(p, p1);
Assert.IsTrue(In(4, left));
Assert.IsFalse(In(5, left));
Assert.IsFalse(In(3.99, left));
}
public override bool Contains(Piece piece)
{
// we will subtract each this.piece from piece and if piece finally becomes 0 then
// there is no point outside this set
var remainders = new List<Piece>{ piece };
foreach (var p in this.Pieces)
{
var newRemainders = new List<Piece>();
foreach (var rem in remainders)
newRemainders.AddRange(PieceFunctions.Subtract(rem, p));
remainders = newRemainders;
}
return remainders.Count == 0;
}