//this method calculates the degree of membership for a particular value
public override double CalculateDOM(double val)
{
//test for the case where the triangle's left or right offsets are zero
//(to prevent divide by zero errors below)
if (RightOffset.Equals(0.0) && PeakPoint.Equals(val) ||
LeftOffset.Equals(0.0) && PeakPoint.Equals(val))
{
return(1.0);
}
//find DOM if left of center
if ((val <= PeakPoint) && (val >= (PeakPoint - LeftOffset)))
{
double grad = 1.0 / LeftOffset;
return(grad * (val - (PeakPoint - LeftOffset)));
}
//find DOM if right of center
if (val > PeakPoint && (val < (PeakPoint + RightOffset)))
{
double grad = 1.0 / -RightOffset;
return(grad * (val - PeakPoint) + 1.0);
}
//out of range of this FLV, return zero
return(0.0);
}
public override double CalculateDOM(double val)
{
//check for case where the offset may be zero
if (RightOffset == 0 && val.Equals(PeakPoint) || LeftOffset == 0.0 && (PeakPoint.Equals(val)))
{
return(1.0);
}
//find DOM if left of center
if ((val <= PeakPoint) && (val > (PeakPoint - LeftOffset)))
{
double grad = 1.0 / LeftOffset;
return(grad * (val - (PeakPoint - LeftOffset)));
}
//find DOM if right of center
if (val > PeakPoint && (val <= PeakPoint + RightOffset))
{
return(1.0);
}
//out of range of this FLV, return zero
else
{
return(0.0);
}
}