public void RunCycle()
{
HashSet <Point4d> newActivePoints = new HashSet <Point4d>();
_Cycle++;
foreach (var x in GetRange(-_Cycle, _StartingSize + _Cycle))
{
foreach (var y in GetRange(-_Cycle, _StartingSize + _Cycle))
{
foreach (var z in GetRange(-_Cycle, _Cycle))
{
foreach (var w in GetRange(-_Cycle, _Cycle))
{
var point = new Point4d(x, y, z, w);
var surroundingActivePoints = GetSurroundingPoints(point).Count(p => ActivePoints.Contains(p));
if (ActivePoints.Contains(point))
{
if (surroundingActivePoints == 2 || surroundingActivePoints == 3)
{
newActivePoints.Add(point);
}
}
else if (surroundingActivePoints == 3)
{
newActivePoints.Add(point);
}
}
}
}
}
ActivePoints = newActivePoints;
}
private static IEnumerable <Point4d> GetSurroundingPoints(Point4d center)
{
foreach (var x in GetRange(center.X - 1, center.X + 1))
{
foreach (var y in GetRange(center.Y - 1, center.Y + 1))
{
foreach (var z in GetRange(center.Z - 1, center.Z + 1))
{
foreach (var w in GetRange(center.W - 1, center.W + 1))
{
if (center.X == x && center.Y == y && center.Z == z && center.W == w)
{
continue;
}
yield return(new Point4d(x, y, z, w));
}
}
}
}
}
