public bool IsSelfCrossing(int[] x)
{
if (x.Length < 4)
{
return(false);
}
List <mzPoint> pts = new List <mzPoint>();
int iCurrentX = 0;
int iCurrentY = 0;
mzPoint pt = new mzPoint(iCurrentX, iCurrentY);
pts.Add(pt.Clone());
for (int i = 0; i < x.Length; i++)
{
int nStepX = 0;
int nStepY = 0;
if (i % 4 == 0)
{
nStepX = 0;
nStepY = 1;
}
else if (i % 4 == 1)
{
nStepX = 1;
nStepY = 0;
}
else if (i % 4 == 2)
{
nStepX = 0;
nStepY = -1;
}
else if (i % 4 == 3)
{
nStepX = -1;
nStepY = 0;
}
for (int j = 0; j < x[i]; j++)
{
mzPoint ptNew = pt.Clone();
ptNew.m_nx += nStepX * (j + 1);
ptNew.m_ny += nStepY * (j + 1);
if (pts.Find((mzPoint p) => p.m_nx == ptNew.m_nx && p.m_ny == ptNew.m_ny) != null)
{
return(true);
}
pts.Add(ptNew);
}
pt.m_nx += nStepX * x[i];
pt.m_ny += nStepY * x[i];
}
return(false);
}
public mzPoint Clone()
{
mzPoint pt = new mzPoint(m_nx, m_ny);
return(pt);
}
