private int FindAxis(double[] dir)
{
int r0 = 0;
double d0 = double.MaxValue;
foreach (PAxis Ax in Axes)
{
double v = PGeom.Dist2(dir, Ax.Dir);
if (v < d0)
{
d0 = v; r0 = Ax.Id + 1;
}
v = PGeom.Dist2Rev(dir, Ax.Dir);
if (v < d0)
{
d0 = v; r0 = -Ax.Id - 1;
}
}
return(r0);
}
