Need help create circle not filled !

Hello guys , I have a function that return a filled circle , can you say me how I can transform this code to return a not filled circle ? With the same form !

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public ArrayList<Location> createCircleFilled(Location loc, int r) {
ArrayList<Location> loc2 = new ArrayList<Location>();
int cx = loc.getBlockX();
int cy = loc.getBlockY() - 1;
int cz = loc.getBlockZ();
World w = loc.getWorld();
int rSquared = r * r;
for (int x = cx - r; x <= cx + r; x++) {
for (int z = cz - r; z <= cz + r; z++) {
if ((cx - x) * (cx - x) + (cz - z) * (cz - z) <= rSquared) {
Location cylBlock = new Location(w, x, cy, z);
loc2.add(cylBlock);
}
}
}

return loc2;
}

 

RdN2507 This is just a guess but what happens if you change <=rSquared to ==rSquared. I have a feeling it will leave some blocks out but it's worth a try.
If you really can't find it anywhere on here, go look at the WorldEdit source

 

I will try and say if it works ! I've already searched in WorldEdit but no answer

It works just how I want thanks very much guys !

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

RdN2507 Not sure what you mean by 'guys' but no worries