/// <summary>
/// lazy to seek for formulas like in North() therefore let find symmetric
/// </summary>
internal int SouthWest(HealCoor basin)
{
int newRing, newPixelInRing;
North(basin.Symmetric(_healpixManager), NeighborHor.East, out newRing, out newPixelInRing);
_healpixManager.Symmetric(ref newRing, ref newPixelInRing);
return(_healpixManager.GetP(newRing, newPixelInRing));
}
public HealCoor Symmetric(HealpixManager man)
{
int newRing = Ring;
int newPixelInRing = PixelInRing;
man.Symmetric(ref newRing, ref newPixelInRing);
return(new HealCoor()
{
P = man.GetP(newRing, newPixelInRing),
PixelInRing = newPixelInRing,
PixelsCountInRing = PixelsCountInRing,
Ring = newRing,
NorthCap = !NorthCap,
});
}