further optimazion of ws func

nether/init.lua

@@ -134,10 +134,10 @@ end
 local SIZE = 1000
 local ssize = math.ceil(math.abs(SIZE))
 local function do_ws_func(depth, a, x)
-	local n = x/(16*SIZE)
+	local n = math.pi * x / (16 * SIZE)
 	local y = 0
 	for k=1,depth do
-		y = y + math.sin(math.pi * k^a * n)/(k^a)
+		y = y + math.sin(k^a * n) / k^a
 	end
 	return SIZE*y/math.pi
 end