public class Line {
    public static void main(String[] args) {
        // Input l and theta
        double l = Double.parseDouble(args[0]);
        int theta = Integer.parseInt(args[1]);

        double cx = 0.5, cy = 0.5;
        StdDraw.enableDoubleBuffering();

        while (true) {
            double x = cx + l * Math.cos(Math.toRadians(theta));
            double y = cy + l * Math.sin(Math.toRadians(theta));
            StdDraw.clear();
            StdDraw.line(cx, cy, x, y);
           
            StdDraw.show();
            StdDraw.pause(1);
            theta = (theta + 2) % 360;
        }
    } // main()
} // class Line