phi = Math.atan2((rtx - cx)*(y - cy) - (x - cx)*(rty - cy), (rtx - cx)*(x - cx) + (y - cy)*(rty - cy));
        for(int i=0; i<=Dots.size()-1;i++){
        Dots.get(i).x =  (Points.get(i).x - cx) * Math.cos(phi) - (Points.get(i).y - cy) * Math.sin(phi) + cx;
        Dots.get(i).y =  (Points.get(i).x - cx) * Math.sin(phi) + (Points.get(i).y - cy) * Math.cos(phi) + cy;
        }