public SierpinskiFormation() : base(
// Fetch our raw data from the filled wedge formation. We
// it as our "blueprint" from which filter out some entries
// (the "holes" in the Sierpinski triangle).
FilledWedgeBase
// Translate coordinates back to be full integers and all positive.
.Select(t => Tuple.Create((t.Item1 + t.Item2) / 2, t.Item2))
// Transform to rectangular space (offset y to x axis).
.Select(t => Tuple.Create(t.Item1, t.Item2 - t.Item1))
// Because then we can wave our magic wand...
.Select(t => (t.Item1 & t.Item2) == 0)
// Merge it with our original filled wedge list again, so that we get
// the association (bool keep, Vector2 entry).
.Zip(FilledWedge, Tuple.Create)
// Then filter by that association.
.Where(t => t.Item1).Select(t => t.Item2))
{
}
public FilledWedgeFormation() : base(
FilledWedgeBase.Select(t => new Vector2(0.5f * t.Item1, t.Item2)))
{
}
