public MACD(IIndicator <double> source, int shortCycle, int longCycle, int difCycle)
{
Source = source;
ShortCycle = shortCycle;
LongCycle = longCycle;
DifCycle = difCycle;
var fast = Source.EMA(ShortCycle);
var slow = Source.EMA(LongCycle);
Dif = BinaryOperation.Create(fast, slow, (a, b) => a - b);
Dea = Dif.EMA(difCycle);
Macd = BinaryOperation.Create(Dif, Dea, (a, b) => 2 * (a - b));
Dif.Update += Merge;
Dea.Update += Merge;
Macd.Update += Merge;
}