public double[] Translate(IChromosome chromosome)
{
// get chromosome's value
ulong val = ((BinaryChromosome)chromosome).Value;
// chromosome's length
int length = ((BinaryChromosome)chromosome).Length;
// length of X component
int xLength = length / 2;
// length of Y component
int yLength = length - xLength;
// X maximum value - equal to X mask
ulong xMax = 0xFFFFFFFFFFFFFFFF >> (64 - xLength);
// Y maximum value
ulong yMax = 0xFFFFFFFFFFFFFFFF >> (64 - yLength);
// X component
double xPart = val & xMax;
// Y component;
double yPart = val >> xLength;
// translate to optimization's funtion space
double[] ret = new double[2];
ret[0] = xPart * rangeX.Length / xMax + rangeX.Min;
ret[1] = yPart * rangeY.Length / yMax + rangeY.Min;
return ret;
}