Cylinder like worldEdit

public void cylinder(Location loc, Material mat, int r) {
        int cx = loc.getBlockX();
        int cy = loc.getBlockY();
        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) {
                                Block b = new  Location(World, x, cy, z).getBlock();
                                b.setType(mat);
                        }
                }
        }
}