+ let minX, minY, maxX, maxY = ellipseWindow e
+
+ let mutable area = 0
+ for y in (if minY < 0 then 0 else minY) .. (if maxY >= h then h - 1 else maxY) do
+ for x in (if minX < 0 then 0 else minX) .. (if maxX >= w then w - 1 else maxX) do
+ let yf, xf = float y, float x
+ if e.Contains xf yf &&
+ neighbors |> List.forall (fun (otherE, _, _) -> otherE.Removed || not <| otherE.Contains xf yf)
+ then
+ area <- area + 1