declare lower;

input price = close;
input calculationMode = {default Normal, Alternate};

def FastLine;
switch (calculationMode) {
case Normal:
    FastLine = Average(price, 3) - Average(price, 10);
case Alternate:
    FastLine = Average(price - Average(price[3], 3), 2);
}
def SlowLine = Average(FastLine, 16);
def Hist = FastLine;
def ZeroLine = 0;

def condition =
slowLine[12] crosses above zeroLine or
slowLine[11] crosses above zeroLine or
slowLine[10] crosses above zeroLine or
slowLine[9] crosses above zeroLine or
slowLine[8] crosses above zeroLine or
slowLine[7] crosses above zeroLine or
slowLine[6] crosses above zeroLine or
slowLine[5] crosses above zeroLine or
slowLine[4] crosses above zeroLine or
slowLine[3] crosses above zeroLine or
slowLine[2] crosses above zeroLine or
slowLine[1] crosses above zeroLine or
slowLine crosses above zeroLine;

def fastLineBelowZero = fastLine[3] > 0 and fastLine[2] < 0 and fastLine[1] < 0 and fastLine < 0;

def slowLineAboveZero = slowLine > 0;

plot test = if condition and fastLineBelowZero and slowLineAboveZero then 1 else 0;