private bool IsGaussCodeCorrect()
{
/*
* 1- 0 is not allowed, because 0 = -0
* 2- Every cross has to appear twice, positive and negative
* 3- There is no knot with 2 crossings TODO
* -1,2,1,-2 NO
* 1,-1,-2,2 OK
*/
bool notContainsZero = !GaussCode.Contains(0);
bool everyCrossTwice = GaussCode.TrueForAll(c1 => gaussCode.Exists(c2 => c1 == -c2));
return(notContainsZero && everyCrossTwice);
}
private void RemapGaussCode()
{
//remap gauss code to keep consistency with names
MovableCircularList <int> kGauss = new MovableCircularList <int>(GaussCode);
int indexCross = 1;
List <int> avoidPosition = new List <int>();
for (int i = 0; i < kGauss.Count; i++)
{
if (!avoidPosition.Contains(i))
{
int index = GaussCode.IndexOf(-GaussCode[i]);
int sign = GaussCode[i] < 0 ? -1 : 1;
kGauss[i] = sign * indexCross;
kGauss[index] = -kGauss[i];
avoidPosition.Add(index);
avoidPosition.Add(i);
indexCross++;
}
}
GaussCode = kGauss;
}
